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Castellanos Otero P, Todd TW, Shao W, Jones CJ, Huang K, Daughrity LM, Yue M, Sheth U, Gendron TF, Prudencio M, Oskarsson B, Dickson DW, Petrucelli L, Zhang YJ. Generation and characterization of monoclonal antibodies against pathologically phosphorylated TDP-43. PLoS One 2024; 19:e0298080. [PMID: 38635657 PMCID: PMC11025846 DOI: 10.1371/journal.pone.0298080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/18/2024] [Indexed: 04/20/2024] Open
Abstract
Inclusions containing TAR DNA binding protein 43 (TDP-43) are a pathological hallmark of frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS). One of the disease-specific features of TDP-43 inclusions is the aberrant phosphorylation of TDP-43 at serines 409/410 (pS409/410). Here, we developed rabbit monoclonal antibodies (mAbs) that specifically detect pS409/410-TDP-43 in multiple model systems and FTD/ALS patient samples. Specifically, we identified three mAbs (26H10, 2E9 and 23A1) from spleen B cell clones that exhibit high specificity and sensitivity to pS409/410-TDP-43 peptides in an ELISA assay. Biochemical analyses revealed that pS409/410 of recombinant TDP-43 and of exogenous 25 kDa TDP-43 C-terminal fragments in cultured HEK293T cells are detected by all three mAbs. Moreover, the mAbs detect pS409/410-positive TDP-43 inclusions in the brains of FTD/ALS patients and mouse models of TDP-43 proteinopathy by immunohistochemistry. Our findings indicate that these mAbs are a valuable resource for investigating TDP-43 pathology both in vitro and in vivo.
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Affiliation(s)
| | - Tiffany W. Todd
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Wei Shao
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Caroline J. Jones
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Kexin Huang
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Lillian M. Daughrity
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Udit Sheth
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
| | - Tania F. Gendron
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
| | - Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
| | - Björn Oskarsson
- Department of Neurology, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Dennis W. Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
| | - Yong-Jie Zhang
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
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Calliari A, Daughrity LM, Albagli EA, Castellanos Otero P, Yue M, Jansen-West K, Islam NN, Caulfield T, Rawlinson B, DeTure M, Cook C, Graff-Radford NR, Day GS, Boeve BF, Knopman DS, Petersen RC, Josephs KA, Oskarsson B, Gitler AD, Dickson DW, Gendron TF, Prudencio M, Ward ME, Zhang YJ, Petrucelli L. HDGFL2 cryptic proteins report presence of TDP-43 pathology in neurodegenerative diseases. Mol Neurodegener 2024; 19:29. [PMID: 38539264 PMCID: PMC10967196 DOI: 10.1186/s13024-024-00718-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 03/11/2024] [Indexed: 04/13/2024] Open
Abstract
This letter demonstrates the potential of novel cryptic proteins resulting from TAR DNA-binding protein 43 (TDP-43) dysfunction as markers of TDP-43 pathology in neurodegenerative diseases.
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Affiliation(s)
- Anna Calliari
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | - Ellen A Albagli
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | - Naeyma N Islam
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | | | - Michael DeTure
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Casey Cook
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, USA
| | | | - Gregory S Day
- Department of Neurology, Mayo Clinic, Jacksonville, FL, USA
| | | | | | | | | | | | - Aaron D Gitler
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA
| | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Tania F Gendron
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Michael E Ward
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA.
- Center for Alzheimer's and Related Dementias, National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA.
| | - Yong-Jie Zhang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA.
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, USA.
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA.
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, USA.
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Ye H, Zhao Y, He S, Wu Z, Yue M, Hong M. Metagenomics reveals the response of desert steppe microbial communities and carbon-nitrogen cycling functional genes to nitrogen deposition. Front Microbiol 2024; 15:1369196. [PMID: 38596372 PMCID: PMC11002186 DOI: 10.3389/fmicb.2024.1369196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 03/11/2024] [Indexed: 04/11/2024] Open
Abstract
Introduction Nitrogen (N) deposition seriously affects the function of carbon (C) and N cycling in terrestrial ecosystems by altering soil microbial communities, especially in desert steppe ecosystems. However, there is a need for a comprehensive understanding of how microorganisms involved in each C and N cycle process respond to N deposition. Methods In this study, shotgun metagenome sequencing was used to investigate variations in soil C and N cycling-related genes in the desert steppe in northern China after 6 years of the following N deposition: N0 (control); N30 (N addition 30 kg ha-1 year-1): N50 (N addition 50 kg ha-1 year-1). Results N deposition significantly increased the relative abundance of Actinobacteria (P < 0.05) while significantly decreased the relative abundances of Proteobacteria and Acidobacteria (P < 0.05). This significantly impacted the microbial community composition in desert steppe soils. The annual addition or deposition of 50 kg ha-1 year-1 for up to 6 years did not affect the C cycle gene abundance but changed the C cycle-related microorganism community structure. The process of the N cycle in the desert steppe was affected by N deposition (50 kg ha-1 year-1), which increased the abundance of the pmoA-amoA gene related to nitrification and the nirB gene associated with assimilation nitrite reductase. There may be a niche overlap between microorganisms involved in the same C and N cycling processes. Discussion This study provides new insights into the effects of N deposition on soil microbial communities and functions in desert steppe and a better understanding of the ecological consequences of anthropogenic N addition.
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Affiliation(s)
- He Ye
- Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Region, Hohhot, China
| | - Yu Zhao
- Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Region, Hohhot, China
| | - Shilong He
- Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Region, Hohhot, China
| | - Zhendan Wu
- Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Region, Hohhot, China
| | - Mei Yue
- Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Region, Hohhot, China
| | - Mei Hong
- Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Region, Hohhot, China
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Ye H, Tu N, Wu Z, He S, Zhao Y, Yue M, Hong M. Identification of bacteria and fungi responsible for litter decomposition in desert steppes via combined DNA stable isotope probing. Front Microbiol 2024; 15:1353629. [PMID: 38525080 PMCID: PMC10957780 DOI: 10.3389/fmicb.2024.1353629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 02/28/2024] [Indexed: 03/26/2024] Open
Abstract
Introduction Soil microorganisms play crucial roles in determining the fate of litter in desert steppes because their activities constitute a major component of the global carbon (C) cycle. Human activities lead to increased ecosystem nitrogen (N) deposition, which has unpredictable impacts on soil microorganism diversity and functions. Nowadays, it is necessary to further study the succession of these microorganisms in the process of litter decomposition in desert steppe, and explore the effect of N deposition on this process. This issue is particularly important to resolve because it contributes to the broader understanding of nutrient cycling processes in desert steppes. Methods In this study, DNA stable isotope probing (DNA-SIP) was used to study changes in soil bacterial and fungal community composition and function during 8 weeks of culture of 13C-labeled litter in desert steppes. Results The results were as follows: (1) Actinomycetota, Pseudomonadota, and Ascomycota are the main microorganisms involved in litter decomposition in desert steppes; (2) N deposition (50 kg ha-1 year-1) significantly increased the relative abundance of some microorganisms involved in the decomposition process; and (3) N deposition likely promotes litter decomposition in desert steppes by increasing the abundances of N cycles bacteria (usually carrying GH family functional genes). Discussion These findings contribute to a deeper understanding of the C assimilation mechanisms associated with litter residue production, emphasizing the importance of extensive C utilization.
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Affiliation(s)
- He Ye
- Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development, Universities of Inner Mongolia Autonomous Region, Hohhot, China
| | - Nare Tu
- Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development, Universities of Inner Mongolia Autonomous Region, Hohhot, China
| | - Zhendan Wu
- Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development, Universities of Inner Mongolia Autonomous Region, Hohhot, China
| | - Shilong He
- Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development, Universities of Inner Mongolia Autonomous Region, Hohhot, China
| | - Yu Zhao
- Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development, Universities of Inner Mongolia Autonomous Region, Hohhot, China
| | - Mei Yue
- Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development, Universities of Inner Mongolia Autonomous Region, Hohhot, China
| | - Mei Hong
- Key Laboratory of Soil Quality and Nutrient Resources, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
- Key Laboratory of Agricultural Ecological Security and Green Development, Universities of Inner Mongolia Autonomous Region, Hohhot, China
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Marks JD, Ayuso VE, Carlomagno Y, Yue M, Todd TW, Hao Y, Li Z, McEachin ZT, Shantaraman A, Duong DM, Daughrity LM, Jansen-West K, Shao W, Calliari A, Bejarano JG, DeTure M, Rawlinson B, Casey MC, Lilley MT, Donahue MH, Jawahar VM, Boeve BF, Petersen RC, Knopman DS, Oskarsson B, Graff-Radford NR, Wszolek ZK, Dickson DW, Josephs KA, Qi YA, Seyfried NT, Ward ME, Zhang YJ, Prudencio M, Petrucelli L, Cook CN. TMEM106B core deposition associates with TDP-43 pathology and is increased in risk SNP carriers for frontotemporal dementia. Sci Transl Med 2024; 16:eadf9735. [PMID: 38232138 PMCID: PMC10841341 DOI: 10.1126/scitranslmed.adf9735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/18/2023] [Indexed: 01/19/2024]
Abstract
Genetic variation at the transmembrane protein 106B gene (TMEM106B) has been linked to risk of frontotemporal lobar degeneration with TDP-43 inclusions (FTLD-TDP) through an unknown mechanism. We found that presence of the TMEM106B rs3173615 protective genotype was associated with longer survival after symptom onset in a postmortem FTLD-TDP cohort, suggesting a slower disease course. The seminal discovery that filaments derived from TMEM106B is a common feature in aging and, across a range of neurodegenerative disorders, suggests that genetic variants in TMEM106B could modulate disease risk and progression through modulating TMEM106B aggregation. To explore this possibility and assess the pathological relevance of TMEM106B accumulation, we generated a new antibody targeting the TMEM106B filament core sequence. Analysis of postmortem samples revealed that the TMEM106B rs3173615 risk allele was associated with higher TMEM106B core accumulation in patients with FTLD-TDP. In contrast, minimal TMEM106B core deposition was detected in carriers of the protective allele. Although the abundance of monomeric full-length TMEM106B was unchanged, carriers of the protective genotype exhibited an increase in dimeric full-length TMEM106B. Increased TMEM106B core deposition was also associated with enhanced TDP-43 dysfunction, and interactome data suggested a role for TMEM106B core filaments in impaired RNA transport, local translation, and endolysosomal function in FTLD-TDP. Overall, these findings suggest that prevention of TMEM106B core accumulation is central to the mechanism by which the TMEM106B protective haplotype reduces disease risk and slows progression.
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Affiliation(s)
- Jordan D. Marks
- Medical Scientist Training Program, Mayo Clinic Alix School of Medicine, Rochester, MN 55905, USA
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Jacksonville, FL 32224, USA
| | - Virginia Estades Ayuso
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Jacksonville, FL 32224, USA
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Yari Carlomagno
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Tiffany W. Todd
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Ying Hao
- Center for Alzheimer’s and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ziyi Li
- Center for Alzheimer’s and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Zachary T. McEachin
- Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA 30307, USA
- Department for Human Genetics, Emory University School of Medicine, Atlanta, GA 30307, USA
| | - Anantharaman Shantaraman
- Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA 30307, USA
| | - Duc M. Duong
- Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA 30307, USA
| | | | - Karen Jansen-West
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Wei Shao
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Anna Calliari
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Michael DeTure
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Bailey Rawlinson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Meredith T. Lilley
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Jacksonville, FL 32224, USA
| | - Megan H. Donahue
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | | | | | | | - Björn Oskarsson
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | | | - Dennis W. Dickson
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Jacksonville, FL 32224, USA
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Yue A. Qi
- Center for Alzheimer’s and Related Dementias (CARD), National Institute on Aging and National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Nicholas T. Seyfried
- Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA 30307, USA
| | - Michael E. Ward
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Yong-Jie Zhang
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Jacksonville, FL 32224, USA
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Mercedes Prudencio
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Jacksonville, FL 32224, USA
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Leonard Petrucelli
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Jacksonville, FL 32224, USA
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Casey N. Cook
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Jacksonville, FL 32224, USA
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
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Liu C, He JK, Shang JY, Yue M, Zhang NN, Liu YP. [Changes of HER2 low expression status in primary and recurrent/metastatic breast cancer]. Zhonghua Bing Li Xue Za Zhi 2023; 52:912-917. [PMID: 37670620 DOI: 10.3760/cma.j.cn112151-20230216-00141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Objective: To investigate the evolution and clinical significance of HER2 low expression status in HER2 negative patients in primary and recurrent/metastatic breast cancers. Methods: The data and archived sections of 259 breast cancer patients with recurrence/metastasis and HER2-negative primary foci were collected from January 2015 to January 2022 at the Fourth Hospital of Hebei Medical University, and the HER2 status of primary and recurrence/metastasis foci was determined by immunohistochemistry (IHC), among which IHC 2+patients were subject to fluorescence in situ hybridization (FISH). The HER2 status was classified as HER2-0 group; patients with IHC 1+, IHC 2+and no FISH amplification were classified as HER2 low expression group; and patients with IHC 3+, IHC 2+and FISH amplified were classified as HER2-positive group. The changes of HER2 status in patients with HER2 low expression in primary versus recurrent/metastatic breast cancer foci were compared, and their clinicopathologic characteristics and prognosis were analyzed. Results: The overall concordance rate between primary and recurrent/metastatic HER2 status in breast cancer was 60.6% (157/259, κ=0.178). A total of 102 patients (102/259, 39.4%) had inconsistent primary and recurrent/metastatic HER2 status; 37 patients (37/259, 14.3%) had HER2-0 at the primary foci and HER2-low expression at the recurrent/metastatic; and 56 patients (56/259, 21.6%) had HER2-low expression in the primary foci and HER2-0 in the recurrent/metastatic. The recurrent/metastatic foci became low-expressing compared with the recurrent/metastatic foci which remained HER2-0 patients, with longer overall survival time, higher ER and PR positivity, lower Ki-67 positivity index, and lower tumor histological grade; all with statistically significant differences (all P<0.05). In the primary HER2-low group, patients with recurrent/metastatic foci became HER2-0 while those with recurrent/metastatic foci remained low expression; there were no statistically significant differences in clinicopathological features and overall survival time (all P>0.05). Conclusions: Unstable HER2 status in patients with HER2-0 and low expression in primary versus recurrent/metastatic breast cancer foci, and HER2-0 in the primary foci but low HER2 expression status in recurrence/metastasis is associated with favourable prognosis, and testing HER2 status in recurrence/metastasis can provide more treatment options for such patients.
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Affiliation(s)
- C Liu
- Department of Pathology, the Fourth Hospital of Hebei Medical University, Tumor Hospital of Hebei Province, Shijiazhuang 050011, China
| | - J K He
- Department of Pathology, the Fourth Hospital of Hebei Medical University, Tumor Hospital of Hebei Province, Shijiazhuang 050011, China
| | - J Y Shang
- Department of Pathology, the Fourth Hospital of Hebei Medical University, Tumor Hospital of Hebei Province, Shijiazhuang 050011, China
| | - M Yue
- Department of Pathology, the Fourth Hospital of Hebei Medical University, Tumor Hospital of Hebei Province, Shijiazhuang 050011, China
| | - N N Zhang
- Department of Pathology, Central Hospital of Handan, Hebei Province, Handan 056000, China
| | - Y P Liu
- Department of Pathology, the Fourth Hospital of Hebei Medical University, Tumor Hospital of Hebei Province, Shijiazhuang 050011, China
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7
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Hu M, Liu R, Li J, Zhang L, Cao J, Yue M, Zhong D, Tang R. Clinical features and prognosis of pediatric acute lymphocytic leukemia with JAK-STAT pathway genetic abnormalities: a case series. Ann Hematol 2023; 102:2445-2457. [PMID: 37209119 PMCID: PMC10199427 DOI: 10.1007/s00277-023-05245-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 04/20/2023] [Indexed: 05/22/2023]
Abstract
The objective of this study is to explore the clinical features and outcomes of pediatric patients with acute lymphoblastic leukemia (ALL) harboring JAK-STAT signaling pathway genetic abnormalities. This retrospective case series examined the clinical data of pediatric patients diagnosed with ALL harboring JAK-STAT pathway genetic abnormality at the Children's Hospital of the Capital Institute of Pediatrics between January 2016 and January 2022. Bone marrow next-generation sequencing was used to reveal the JAK pathway abnormalities. Descriptive statistics were used. From 432 children with ALL during the study period, eight had JAK-STAT pathway genetic abnormalities. Regarding immunotyping, there were four patients with common-B cell types and one with pre-B cell type. The three patients with T-ALL had early T-cell precursor(ETP) type, pre-T cell type, and T cell type. Gene mutations were more common than fusion genes. There was no central nervous system involvement in eight patients. All patients were considered at least at intermediate risk before treatments. Four patients underwent hematopoietic stem cell transplantation (HSCT). One child had a comprehensive relapse and died. The child had a severe infection and could not tolerate high-intensity chemotherapy. Another child relapsed 2 years after HSCT and died. Disease-free survival was achieved in six children. JAK-STAT pathway genetic abnormalities in pediatric Ph-like ALL are rare. Special attention should be paid to treatment-related complications, such as infection and combination therapy (chemotherapy, small molecule targeted drugs, immunotherapy, etc.) to reduce treatment-related death and improve long-term quality of life.
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Affiliation(s)
- Mengze Hu
- Department of Hematology, Children's Hospital, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Rong Liu
- Department of Hematology, Children's Hospital, Capital Institute of Pediatrics, Beijing, 100020, China.
| | - Juanjuan Li
- Department of Hematology, Children's Hospital, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Lei Zhang
- Department of Hematology, Children's Hospital, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Jing Cao
- Department of Hematology, Children's Hospital, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Mei Yue
- Department of Hematology, Children's Hospital, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Dixiao Zhong
- Department of Hematology, Children's Hospital, Capital Institute of Pediatrics, Beijing, 100020, China
| | - Ruihong Tang
- Department of Hematology, Children's Hospital, Capital Institute of Pediatrics, Beijing, 100020, China
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8
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Estades Ayuso V, Pickles S, Todd T, Yue M, Jansen-West K, Song Y, González Bejarano J, Rawlinson B, DeTure M, Graff-Radford NR, Boeve BF, Knopman DS, Petersen RC, Dickson DW, Josephs KA, Petrucelli L, Prudencio M. TDP-43-regulated cryptic RNAs accumulate in Alzheimer's disease brains. Mol Neurodegener 2023; 18:57. [PMID: 37605276 PMCID: PMC10441763 DOI: 10.1186/s13024-023-00646-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 08/04/2023] [Indexed: 08/23/2023] Open
Abstract
BACKGROUND Inclusions of TAR DNA-binding protein 43 kDa (TDP-43) has been designated limbic-predominant, age-related TDP-43 encephalopathy (LATE), with or without co-occurrence of Alzheimer's disease (AD). Approximately, 30-70% AD cases present TDP-43 proteinopathy (AD-TDP), and a greater disease severity compared to AD patients without TDP-43 pathology. However, it remains unclear to what extent TDP-43 dysfunction is involved in AD pathogenesis. METHODS To investigate whether TDP-43 dysfunction is a prominent feature in AD-TDP cases, we evaluated whether non-conserved cryptic exons, which serve as a marker of TDP-43 dysfunction in amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD-TDP), accumulate in AD-TDP brains. We assessed a cohort of 192 post-mortem brains from three different brain regions: amygdala, hippocampus, and frontal cortex. Following RNA and protein extraction, qRT-PCR and immunoassays were performed to quantify the accumulation of cryptic RNA targets and phosphorylated TDP-43 pathology, respectively. RESULTS We detected the accumulation of misspliced cryptic or skiptic RNAs of STMN2, KCNQ2, UNC13A, CAMK2B, and SYT7 in the amygdala and hippocampus of AD-TDP cases. The topographic distribution of cryptic RNA accumulation mimicked that of phosphorylated TDP-43, regardless of TDP-43 subtype classification. Further, cryptic RNAs efficiently discriminated AD-TDP cases from controls. CONCLUSIONS Overall, our results indicate that cryptic RNAs may represent an intriguing new therapeutic and diagnostic target in AD, and that methods aimed at detecting and measuring these species in patient biofluids could be used as a reliable tool to assess TDP-43 pathology in AD. Our work also raises the possibility that TDP-43 dysfunction and related changes in cryptic splicing could represent a common molecular mechanism shared between AD-TDP and FTLD-TDP.
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Affiliation(s)
- Virginia Estades Ayuso
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Sarah Pickles
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Tiffany Todd
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | - Yuping Song
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | | | - Michael DeTure
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | | | | | | | | | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | | | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA.
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA.
- Department of Research, Neuroscience, Mayo Clinic College of Medicine, 4500 San Pablo Rd, Jacksonville, FL, 32224, USA.
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9
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Pickles S, Zanetti Alepuz D, Koike Y, Yue M, Tong J, Liu P, Zhou Y, Jansen-West K, Daughrity LM, Song Y, DeTure M, Oskarsson B, Graff-Radford NR, Boeve BF, Petersen RC, Josephs KA, Dickson DW, Ward ME, Dong L, Prudencio M, Cook CN, Petrucelli L. CRISPR interference to evaluate modifiers of C9ORF72-mediated toxicity in FTD. Front Cell Dev Biol 2023; 11:1251551. [PMID: 37614226 PMCID: PMC10443592 DOI: 10.3389/fcell.2023.1251551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 07/26/2023] [Indexed: 08/25/2023] Open
Abstract
Treatments for neurodegenerative disease, including Frontotemporal dementia (FTD) and Amyotrophic lateral sclerosis (ALS), remain rather limited, underscoring the need for greater mechanistic insight and disease-relevant models. Our ability to develop novel disease models of genetic risk factors, disease modifiers, and other FTD/ALS-relevant targets is impeded by the significant amount of time and capital required to develop conventional knockout and transgenic mice. To overcome these limitations, we have generated a novel CRISPRi interference (CRISPRi) knockin mouse. CRISPRi uses a catalytically dead form of Cas9, fused to a transcriptional repressor to knockdown protein expression, following the introduction of single guide RNA against the gene of interest. To validate the utility of this model we have selected the TAR DNA binding protein (TDP-43) splicing target, stathmin-2 (STMN2). STMN2 RNA is downregulated in FTD/ALS due to loss of TDP-43 activity and STMN2 loss is suggested to play a role in ALS pathogenesis. The involvement of STMN2 loss of function in FTD has yet to be determined. We find that STMN2 protein levels in familial FTD cases are significantly reduced compared to controls, supporting that STMN2 depletion may be involved in the pathogenesis of FTD. Here, we provide proof-of-concept that we can simultaneously knock down Stmn2 and express the expanded repeat in the Chromosome 9 open reading frame 72 (C9ORF72) gene, successfully replicating features of C9-associated pathology. Of interest, depletion of Stmn2 had no effect on expression or deposition of dipeptide repeat proteins (DPRs), but significantly decreased the number of phosphorylated Tdp-43 (pTdp-43) inclusions. We submit that our novel CRISPRi mouse provides a versatile and rapid method to silence gene expression in vivo and propose this model will be useful to understand gene function in isolation or in the context of other neurodegenerative disease models.
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Affiliation(s)
- Sarah Pickles
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic, Jacksonville, FL, United States
| | | | - Yuka Koike
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Jimei Tong
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Pinghu Liu
- Genetic Engineering Core, National Eye Institute, National Institutes of Health, Bethesda, MD, United States
| | - Yugui Zhou
- Genetic Engineering Core, National Eye Institute, National Institutes of Health, Bethesda, MD, United States
| | - Karen Jansen-West
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | | | - Yuping Song
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Michael DeTure
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Björn Oskarsson
- Department of Neurology, Mayo Clinic, Jacksonville, FL, United States
| | | | - Bradley F. Boeve
- Department of Neurology, Mayo Clinic, Rochester, MN, United States
| | | | - Keith A. Josephs
- Department of Neurology, Mayo Clinic, Rochester, MN, United States
| | - Dennis W. Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic, Jacksonville, FL, United States
- Department of Neurology, Mayo Clinic, Jacksonville, FL, United States
| | - Michael E. Ward
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States
| | - Lijin Dong
- Genetic Engineering Core, National Eye Institute, National Institutes of Health, Bethesda, MD, United States
| | - Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic, Jacksonville, FL, United States
| | - Casey N. Cook
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic, Jacksonville, FL, United States
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
- Neuroscience Graduate Program, Mayo Graduate School, Mayo Clinic, Jacksonville, FL, United States
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10
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Zhang L, Zhong DX, Yue M, Xuan LT, Zhang ZX, Li JJ, Li JH, Zou JZ, Yan YC, Liu R. [Clinical analysis of six cases of mucormycosis in children with acute leukemia]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:594-597. [PMID: 37749043 PMCID: PMC10509617 DOI: 10.3760/cma.j.issn.0253-2727.2023.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Indexed: 09/27/2023]
Affiliation(s)
- L Zhang
- Department of Hematology, Capital Institute of Pediatrics, Beijing 100020, China
| | - D X Zhong
- Department of Hematology, Capital Institute of Pediatrics, Beijing 100020, China
| | - M Yue
- Department of Hematology, Capital Institute of Pediatrics, Beijing 100020, China
| | - L T Xuan
- Department of Hematology, Capital Institute of Pediatrics, Beijing 100020, China
| | - Z X Zhang
- Department of Hematology, Capital Institute of Pediatrics, Beijing 100020, China
| | - J J Li
- Department of Hematology, Capital Institute of Pediatrics, Beijing 100020, China
| | - J H Li
- Department of Hematology, Capital Institute of Pediatrics, Beijing 100020, China
| | - J Z Zou
- Department of Pathology, Capital Institute of Pediatrics, Beijing 100020, China
| | - Y C Yan
- Department of Imaging, Capital Institute of Pediatrics, Beijing 100020, China
| | - R Liu
- Department of Hematology, Capital Institute of Pediatrics, Beijing 100020, China
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11
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Koike Y, Pickles S, Ayuso VE, Jansen-West K, Qi YA, Li Z, Daughrity LM, Yue M, Zhang YJ, Cook CN, Dickson DW, Ward M, Petrucelli L, Prudencio M. Correction: TDP-43 and other hnRNPs regulate cryptic exon inclusion of a key ALS/FTD risk gene, UNC13A. PLoS Biol 2023; 21:e3002228. [PMID: 37451236 PMCID: PMC10348821 DOI: 10.1371/journal.pbio.3002228] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023] Open
Abstract
[This corrects the article DOI: 10.1371/journal.pbio.3002028.].
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12
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Koike Y, Pickles S, Estades Ayuso V, Jansen-West K, Qi YA, Li Z, Daughrity LM, Yue M, Zhang YJ, Cook CN, Dickson DW, Ward M, Petrucelli L, Prudencio M. TDP-43 and other hnRNPs regulate cryptic exon inclusion of a key ALS/FTD risk gene, UNC13A. PLoS Biol 2023; 21:e3002028. [PMID: 36930682 PMCID: PMC10057836 DOI: 10.1371/journal.pbio.3002028] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 03/29/2023] [Accepted: 02/08/2023] [Indexed: 03/18/2023] Open
Abstract
A major function of TAR DNA-binding protein-43 (TDP-43) is to repress the inclusion of cryptic exons during RNA splicing. One of these cryptic exons is in UNC13A, a genetic risk factor for amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). The accumulation of cryptic UNC13A in disease is heightened by the presence of a risk haplotype located within the cryptic exon itself. Here, we revealed that TDP-43 extreme N-terminus is important to repress UNC13A cryptic exon inclusion. Further, we found hnRNP L, hnRNP A1, and hnRNP A2B1 bind UNC13A RNA and repress cryptic exon inclusion, independently of TDP-43. Finally, higher levels of hnRNP L protein associate with lower burden of UNC13A cryptic RNA in ALS/FTD brains. Our findings suggest that while TDP-43 is the main repressor of UNC13A cryptic exon inclusion, other hnRNPs contribute to its regulation and may potentially function as disease modifiers.
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Affiliation(s)
- Yuka Koike
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, United States of America
| | - Sarah Pickles
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, United States of America
| | - Virginia Estades Ayuso
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Karen Jansen-West
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Yue A. Qi
- Center for Alzheimer’s and Related Dementias, National Institute on Aging, NIH, Bethesda, Maryland, United States of America
| | - Ziyi Li
- Center for Alzheimer’s and Related Dementias, National Institute on Aging, NIH, Bethesda, Maryland, United States of America
| | - Lillian M. Daughrity
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
| | - Yong-Jie Zhang
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, United States of America
| | - Casey N. Cook
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, United States of America
| | - Dennis W. Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, United States of America
| | - Michael Ward
- Center for Alzheimer’s and Related Dementias, National Institute on Aging, NIH, Bethesda, Maryland, United States of America
- National Institute of Neurological Disorders and Stroke, NIH, Bethesda, Maryland, United States of America
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, United States of America
| | - Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, United States of America
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, United States of America
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13
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Shao W, Todd TW, Wu Y, Jones CY, Tong J, Jansen-West K, Daughrity LM, Park J, Koike Y, Kurti A, Yue M, Castanedes-Casey M, del Rosso G, Dunmore JA, Alepuz DZ, Oskarsson B, Dickson DW, Cook CN, Prudencio M, Gendron TF, Fryer JD, Zhang YJ, Petrucelli L. Two FTD-ALS genes converge on the endosomal pathway to induce TDP-43 pathology and degeneration. Science 2022; 378:94-99. [PMID: 36201573 PMCID: PMC9942492 DOI: 10.1126/science.abq7860] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Frontotemporal dementia and amyotrophic lateral sclerosis (FTD-ALS) are associated with both a repeat expansion in the C9orf72 gene and mutations in the TANK-binding kinase 1 (TBK1) gene. We found that TBK1 is phosphorylated in response to C9orf72 poly(Gly-Ala) [poly(GA)] aggregation and sequestered into inclusions, which leads to a loss of TBK1 activity and contributes to neurodegeneration. When we reduced TBK1 activity using a TBK1-R228H (Arg228→His) mutation in mice, poly(GA)-induced phenotypes were exacerbated. These phenotypes included an increase in TAR DNA binding protein 43 (TDP-43) pathology and the accumulation of defective endosomes in poly(GA)-positive neurons. Inhibiting the endosomal pathway induced TDP-43 aggregation, which highlights the importance of this pathway and TBK1 activity in pathogenesis. This interplay between C9orf72, TBK1, and TDP-43 connects three different facets of FTD-ALS into one coherent pathway.
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Affiliation(s)
- Wei Shao
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
| | - Tiffany W. Todd
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
| | - Yanwei Wu
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
| | - Caroline Y. Jones
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
| | - Jimei Tong
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
| | - Karen Jansen-West
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
| | | | - Jinyoung Park
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
| | - Yuka Koike
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
| | - Aishe Kurti
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
| | | | - Giulia del Rosso
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
- Neurobiology of Disease Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences; Jacksonville, FL, 32224, USA
| | - Judith A. Dunmore
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
| | | | - Björn Oskarsson
- Department of Neurology, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Dennis W. Dickson
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
- Neurobiology of Disease Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences; Jacksonville, FL, 32224, USA
| | - Casey N. Cook
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
- Neurobiology of Disease Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences; Jacksonville, FL, 32224, USA
| | - Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
- Neurobiology of Disease Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences; Jacksonville, FL, 32224, USA
| | - Tania F. Gendron
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
- Neurobiology of Disease Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences; Jacksonville, FL, 32224, USA
| | - John D. Fryer
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
- Department of Neuroscience, Mayo Clinic; Scottsdale, AZ, 85259, USA
| | - Yong-Jie Zhang
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
- Neurobiology of Disease Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences; Jacksonville, FL, 32224, USA
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic; Jacksonville, FL, 32224, USA
- Neurobiology of Disease Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences; Jacksonville, FL, 32224, USA
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14
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Pickles S, Gendron TF, Koike Y, Yue M, Song Y, Kachergus JM, Shi J, DeTure M, Thompson EA, Oskarsson B, Graff-Radford NR, Boeve BF, Petersen RC, Wszolek ZK, Josephs KA, Dickson DW, Petrucelli L, Cook CN, Prudencio M. Evidence of cerebellar TDP-43 loss of function in FTLD-TDP. Acta Neuropathol Commun 2022; 10:107. [PMID: 35879741 PMCID: PMC9310392 DOI: 10.1186/s40478-022-01408-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/11/2022] [Indexed: 02/08/2023] Open
Abstract
Frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) is a neurodegenerative disease primarily affecting the frontal and/or temporal cortices. However, a growing body of evidence suggests that the cerebellum contributes to biochemical, cognitive, and behavioral changes in FTLD-TDP. To evaluate cerebellar TDP-43 expression and function in FTLD-TDP, we analyzed TDP-43 protein levels and the splicing of a TDP-43 target, STMN2, in the cerebellum of 95 FTLD-TDP cases and 25 non-neurological disease controls. Soluble TDP-43 was decreased in the cerebellum of FTLD-TDP cases but a concomitant increase in insoluble TDP-43 was not seen. Truncated STMN2 transcripts, an indicator of TDP-43 dysfunction, were elevated in the cerebellum of FTLD-TDP cases and inversely associated with TDP-43 levels. Additionally, lower cerebellar TDP-43 associated with a younger age at disease onset. We provide evidence of TDP-43 loss of function in the cerebellum in FTLD-TDP, supporting further investigation into this understudied brain region.
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Affiliation(s)
- Sarah Pickles
- Department of Neuroscience, Mayo Clinic, Mangurian Research Building, 4500 San Pablo Road, Jacksonville, FL, 32224, USA
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Tania F Gendron
- Department of Neuroscience, Mayo Clinic, Mangurian Research Building, 4500 San Pablo Road, Jacksonville, FL, 32224, USA
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Yuka Koike
- Department of Neuroscience, Mayo Clinic, Mangurian Research Building, 4500 San Pablo Road, Jacksonville, FL, 32224, USA
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Mangurian Research Building, 4500 San Pablo Road, Jacksonville, FL, 32224, USA
| | - Yuping Song
- Department of Neuroscience, Mayo Clinic, Mangurian Research Building, 4500 San Pablo Road, Jacksonville, FL, 32224, USA
| | | | - J Shi
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL, USA
| | - Michael DeTure
- Department of Neuroscience, Mayo Clinic, Mangurian Research Building, 4500 San Pablo Road, Jacksonville, FL, 32224, USA
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | | | | | | | | | | | | | | | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic, Mangurian Research Building, 4500 San Pablo Road, Jacksonville, FL, 32224, USA
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Mangurian Research Building, 4500 San Pablo Road, Jacksonville, FL, 32224, USA
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Casey N Cook
- Department of Neuroscience, Mayo Clinic, Mangurian Research Building, 4500 San Pablo Road, Jacksonville, FL, 32224, USA.
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA.
| | - Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic, Mangurian Research Building, 4500 San Pablo Road, Jacksonville, FL, 32224, USA.
- Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA.
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15
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Huang H, Zhao X, Shi X, Tan Q, Zhang R, Yue M, Ma R, Chen Q, Zhao S, Yang L. Effects of ethephon on serum levels of sex hormone, apoptosis, and cell cycle of ovaries in mice. Endokrynol Pol 2022; 73:346-352. [PMID: 35593683 DOI: 10.5603/ep.a2022.0025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 01/25/2022] [Indexed: 11/25/2022]
Abstract
INTRODUCTION The effects of ethephon on the reproductive systems of mammalian females are still ambiguous. This study was conducted to evaluate the toxic effects of ethephon on the female reproductive system. MATERIAL AND METHODS Forty female C57 mice were used as experimental subjects and evenly divided into 8 groups, which were fed with mixed ethephon (0, 107.3, 214.5, and 429 mg/kg bw/day) and pure water. After 20 and 40 days of gavage, the mice were weighed and individual organ coefficients of the ovaries were measured. Enzyme-linked immunoassay was used to detect the serum levels of serum sex hormones. The cell cycle distribution and rate of apoptosis of mouse ovarian tissues were examined using flow cytometry. RESULTS Ethephon intoxication significantly decreased serum levels of progesterone (P) and oestradiol (E2) and increased the serum levels of luteinizing hormone (LH). The serum levels of follicle-stimulating hormone (FSH) decreased and then increased over time. In addition, ethephon significantly inhibited the apoptosis rate in the ovary and caused G0/G1 and G2/M arrest. CONCLUSION These results indicate that prolonged exposure to ethephon may have negative effects on the female reproductive system.
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Affiliation(s)
- Hongyuan Huang
- Department of Occupational and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Xiaoqiu Zhao
- Preventive Medicine Experimental Teaching Centre, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Xin Shi
- Preventive Medicine Experimental Teaching Centre, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Qiyue Tan
- Preventive Medicine Experimental Teaching Centre, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Ruizhi Zhang
- Preventive Medicine Experimental Teaching Centre, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Mei Yue
- Preventive Medicine Experimental Teaching Centre, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Rongshuang Ma
- Preventive Medicine Experimental Teaching Centre, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Qiang Chen
- Preventive Medicine Experimental Teaching Centre, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Shuhua Zhao
- Preventive Medicine Experimental Teaching Centre, School of Public Health, Jilin University, Changchun, Jilin, China
| | - Li Yang
- Department of Occupational and Environmental Health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China.
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16
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Song ZL, Liu R, Hu T, Li JH, Zhang CX, Zhang L, Zhong DX, Yue M, Shi XD. [Clinical Efficacy of Haplo-HSCT of ATG Combined with PTCy for Children with Myelodysplastic Syndrome]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2022; 30:516-521. [PMID: 35395989 DOI: 10.19746/j.cnki.issn.1009-2137.2022.02.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To investigate the efficacy and safety of haploidentical hematopoietic stem cell transplantation (haplo-HSCT) in combination of ATG and post-transplant cyclophosphamide (PTCy) -induced immune tolerance after transplantation in treatment of childhood myelodysplastic syndromes(MDS). METHODS From July 2016 to November 2020, a total of 8 children with MDS receiving the haploidentical allo-HSCT combined with ATG and PTCy-induced immune tolerance after transplantation in our hospital were enrolled, whose clinical data were retrospected and analyzed. RESULTS Median age at diagnosis of the 8 children (1 male and 7 females) was 6.4 (range, 10 months to 15 years) years old. The median medical history of MDS was 2.7 years (range, 3 months to 8 years). Among the 8 patients, 7 cases were diagnosed with refractory cytopenia of childhood and one with refractory anemia with excess of blasts. The HSC donors were father, mother or brother of patients and HLA matching in 6-9/12 loci were identical. All the donors were healthy and didn't carry the same pathogenic genes as the recipients. The median age of donors was 36.4 (range, 25 to 49) years old. The median mononuclear cell (MNC) number of the graft was 19.8, ranging in (13.2-47.3)×108/kg, and the median CD34+ cell number was 11.8×106/kg, ranging in (5.0-18.3)×106/kg. Graft-versus-host disease prophylactic regimen was started on day 3 and 4 after transplantation, in which cyclophosphamide (50 mg/kg·d) was administered by intravenous infusion. From day 5 after transplantation, low-dose tacrolimus was administered by intravenous infusion and mycophenolate mofetil was administered orally. The median time of neutrophil and platelet engraftment was 12.6 (rang, 11 to 15) days and 13.3 (rang, 11 to 18) days, respectively. All the patients achieved full donor chimerism on neutrophil engraftment after transplantation. The median follow-up time was 1 032 (rang, 747 to 1 536) days. Both overall survival rate and disease-free survival rate were 100%. CONCLUSION Haplo-HSCT combined with ATG and PTCy-induced immune tolerance after transplantation is a safe and effective treatment for children with MDS.
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Affiliation(s)
- Ze-Liang Song
- Department of Hematology, Children's Hospital Capital Institute of Pediatrics, Beijing 100020, China
| | - Rong Liu
- Department of Hematology, Children's Hospital Capital Institute of Pediatrics, Beijing 100020, China,E-mail:
| | - Tao Hu
- Department of Hematology, Children's Hospital Capital Institute of Pediatrics, Beijing 100020, China
| | - Jun-Hui Li
- Department of Hematology, Children's Hospital Capital Institute of Pediatrics, Beijing 100020, China
| | - Chao-Xia Zhang
- Department of Hematology, Children's Hospital Capital Institute of Pediatrics, Beijing 100020, China
| | - Lei Zhang
- Department of Hematology, Children's Hospital Capital Institute of Pediatrics, Beijing 100020, China
| | - Di-Xiao Zhong
- Department of Hematology, Children's Hospital Capital Institute of Pediatrics, Beijing 100020, China
| | - Mei Yue
- Department of Hematology, Children's Hospital Capital Institute of Pediatrics, Beijing 100020, China
| | - Xiao-Dong Shi
- Department of Hematology, Children's Hospital Capital Institute of Pediatrics, Beijing 100020, China,E-mail:
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17
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Jansen-West K, Todd TW, Daughrity LM, Yue M, Tong J, Carlomagno Y, Del Rosso G, Kurti A, Jones CY, Dunmore JA, Castanedes-Casey M, Dickson DW, Wszolek ZK, Fryer JD, Petrucelli L, Prudencio M. Plasma PolyQ-ATXN3 Levels Associate With Cerebellar Degeneration and Behavioral Abnormalities in a New AAV-Based SCA3 Mouse Model. Front Cell Dev Biol 2022; 10:863089. [PMID: 35386195 PMCID: PMC8977414 DOI: 10.3389/fcell.2022.863089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 02/22/2022] [Indexed: 11/13/2022] Open
Abstract
Spinocerebellar ataxia type 3 (SCA3) is a dominantly inherited cerebellar ataxia caused by the expansion of a polyglutamine (polyQ) repeat in the gene encoding ATXN3. The polyQ expansion induces protein inclusion formation in the neurons of patients and results in neuronal degeneration in the cerebellum and other brain regions. We used adeno-associated virus (AAV) technology to develop a new mouse model of SCA3 that recapitulates several features of the human disease, including locomotor defects, cerebellar-specific neuronal loss, polyQ-expanded ATXN3 inclusions, and TDP-43 pathology. We also found that neurofilament light is elevated in the cerebrospinal fluid (CSF) of the SCA3 animals, and the expanded polyQ-ATXN3 protein can be detected in the plasma. Interestingly, the levels of polyQ-ATXN3 in plasma correlated with measures of cerebellar degeneration and locomotor deficits in 6-month-old SCA3 mice, supporting the hypothesis that this factor could act as a biomarker for SCA3.
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Affiliation(s)
- Karen Jansen-West
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Tiffany W. Todd
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, United States
| | | | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Jimei Tong
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Yari Carlomagno
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, United States
| | - Giulia Del Rosso
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, United States
| | - Aishe Kurti
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Caroline Y. Jones
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Judith A. Dunmore
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | | | - Dennis W. Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, United States
| | | | - John D. Fryer
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, United States
- Department of Neuroscience, Mayo Clinic, Scottsdale, AZ, United States
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, United States
| | - Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
- Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN, United States
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18
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Del Rosso G, Carlomagno Y, Todd TW, Jones CY, Prudencio M, Daughrity LM, Yue M, Jansen-West K, Tong J, Shao W, Wu Y, Castanedes-Casey M, Tabassian L, Oskarsson B, Ling K, Rigo F, Dickson DW, Yao TP, Petrucelli L, Cook CN, Zhang YJ. HDAC6 Interacts With Poly (GA) and Modulates its Accumulation in c9FTD/ALS. Front Cell Dev Biol 2022; 9:809942. [PMID: 35096836 PMCID: PMC8790530 DOI: 10.3389/fcell.2021.809942] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 12/16/2021] [Indexed: 11/13/2022] Open
Abstract
The aberrant translation of a repeat expansion in chromosome 9 open reading frame 72 (C9orf72), the most common cause of frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS), results in the accumulation of toxic dipeptide repeat (DPR) proteins in the central nervous system We have found that, among the sense DPR proteins, HDAC6 specifically interacts with the poly (GA) and co-localizes with inclusions in both patient tissue and a mouse model of this disease (c9FTD/ALS). Overexpression of HDAC6 increased poly (GA) levels in cultured cells independently of HDAC6 deacetylase activity, suggesting that HDAC6 can modulate poly (GA) pathology through a mechanism that depends upon their physical interaction. Moreover, decreasing HDAC6 expression by stereotaxic injection of antisense oligonucleotides significantly reduced the number of poly (GA) inclusions in c9FTD/ALS mice. These findings suggest that pharmacologically reducing HDAC6 levels could be of therapeutic value in c9FTD/ALS.
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Affiliation(s)
- Giulia Del Rosso
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States.,Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, United States
| | - Yari Carlomagno
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Tiffany W Todd
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Caroline Y Jones
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States.,Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, United States
| | | | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Karen Jansen-West
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Jimei Tong
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Wei Shao
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Yanwei Wu
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | | | - Lilia Tabassian
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States
| | - Björn Oskarsson
- Department of Neurology, Mayo Clinic, Jacksonville, FL, United States
| | - Karen Ling
- Ionis Pharmaceuticals, Carlsbad, CA, United States
| | - Frank Rigo
- Ionis Pharmaceuticals, Carlsbad, CA, United States
| | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States.,Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, United States
| | - Tso-Pang Yao
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, United States
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States.,Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, United States
| | - Casey N Cook
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States.,Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, United States
| | - Yong Jie Zhang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, United States.,Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, United States
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19
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Shao DF, Li JH, Hu T, Zhang ZX, Zhang L, Li JJ, Cao J, Feng SQ, Tang RH, Zhong DX, Song ZL, Yue M, Hu MZ, Xuan LT, Zhai MN, Zhang HF, Wang XY, Shi XD, Liu R. Clinical outcomes of individualized busulfan-dosing in hematopoietic stem cell transplantation in Chinese children undergoing with therapeutic drug monitoring. Bone Marrow Transplant 2022; 57:473-478. [PMID: 35039622 DOI: 10.1038/s41409-021-01545-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 09/21/2021] [Accepted: 11/30/2021] [Indexed: 12/19/2022]
Abstract
To identify relationships between busulfan (Bu) exposure and outcomes of a cohort pediatric patients receiving hematopoietic stem cell transplantation (HSCT), along with a targeted busulfan-based conditioning regimen. We retrospectively evaluated targeted busulfan concentrations in 53 pediatric patients (age 0.4-16 years) who received busulfan 4 times daily according to recommended weight-based doses in a single-center analysis between 2018 and 2020. In this trial, individual busulfan pharmacokinetics were performed following dose 5 of the conditioning regimen. Twenty four of 53 patients (45.3%) studies did not require dose adjustments. Equal number of patients (24/53) required one dose adjustments while two-dose adjustment applied for 5 of 53 (9.4%). Twenty-one percent of the patients exhibited ll-lV aGVHD. The incidence of veno-occlusive disease (VOD) was in 3.8% of the 53 patients, while incidence of hemorrhagic cystitis (II-III) reached to 9.7%. Engraftment was successful in 98% of the 53 patients with relapse in 2% of cases. The probability of overall survival and disease-free survival at day 100 was 96% and 94%, respectively. In conclusion, therapeutic drug monitoring (TDM) and individualization of Bu dosage are essential to improve the efficacy and safety of busulfan-based regimen in Chinese pediatric HSCT recipients.
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Affiliation(s)
- Duan-Fang Shao
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Jun-Hui Li
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Tao Hu
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Zhao-Xia Zhang
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Lei Zhang
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Juan-Juan Li
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Jing Cao
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Shun-Qiao Feng
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Rui-Hong Tang
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Di-Xiao Zhong
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Ze-Liang Song
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Mei Yue
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Meng-Ze Hu
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Li-Tian Xuan
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Meng-Na Zhai
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Hai-Feng Zhang
- Department of experimental center, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Xiang-Yan Wang
- Department of Clinical Pharmacology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China
| | - Xiao-Dong Shi
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China.
| | - Rong Liu
- Department of Hematology and Oncology, Children's Hospital of Capital Institute of Pediatrics, No. 2, Yabao Road, Chaoyang District, Beijing, 100020, China.
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20
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Wu Y, Shao W, Todd TW, Tong J, Yue M, Koga S, Castanedes-Casey M, Librero AL, Lee CW, Mackenzie IR, Dickson DW, Zhang YJ, Petrucelli L, Prudencio M. Microglial lysosome dysfunction contributes to white matter pathology and TDP-43 proteinopathy in GRN-associated FTD. Cell Rep 2021; 36:109581. [PMID: 34433069 PMCID: PMC8491969 DOI: 10.1016/j.celrep.2021.109581] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 06/07/2021] [Accepted: 07/29/2021] [Indexed: 11/04/2022] Open
Abstract
Loss-of-function mutations in the progranulin gene (GRN), which encodes progranulin (PGRN), are a major cause of frontotemporal dementia (FTD). GRN-associated FTD is characterized by TDP-43 inclusions and neuroinflammation, but how PGRN loss causes disease remains elusive. We show that Grn knockout (KO) mice have increased microgliosis in white matter and an accumulation of myelin debris in microglial lysosomes in the same regions. Accumulation of myelin debris is also observed in white matter of patients with GRN-associated FTD. In addition, our findings also suggest that PGRN insufficiency in microglia leads to impaired lysosomal-mediated clearance of myelin debris. Finally, Grn KO mice that are deficient in cathepsin D (Ctsd), a key lysosomal enzyme, have augmented myelin debris and increased neuronal TDP-43 pathology. Together, our data strongly imply that PGRN loss affects microglial activation and lysosomal function, resulting in the accumulation of myelin debris and contributing to TDP-43 pathology. Wu et al. show increased microgliosis in white matter of Grn knockout mice. Microglial lysosomes accumulate myelin debris in both Grn knockout mice and patients with GRN-associated FTD, and reducing cathespin D levels exacerbates both myelin debris accumulation and pTdp-43 aggregation. Thus, lysosomal dysfunction affects these pathologies in GRN-related FTD.
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Affiliation(s)
- Yanwei Wu
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Wei Shao
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Tiffany W Todd
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Jimei Tong
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Shunsuke Koga
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Ariston L Librero
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Chris W Lee
- Atlantic Health System, Morristown, NJ 07960, USA; Biomedical Research Institute of New Jersey, Cedar Knolls, NJ 07927, USA
| | - Ian R Mackenzie
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC V6T 2B5, Canada
| | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA; Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA
| | - Yong-Jie Zhang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA; Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA; Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA.
| | - Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA; Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA.
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21
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Sheng Y, Carpenter JS, Elomba CD, Alwine JS, Yue M, Chen CX, Tisdale JE. Effect of menopausal symptom treatment options on palpitations: a systematic review. Climacteric 2021; 25:128-140. [PMID: 34346265 DOI: 10.1080/13697137.2021.1948006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
This systematic review provides an overview of the effects of menopausal symptom treatment options on palpitations, defined as feelings of missed or exaggerated heart beats, reported by perimenopausal and postmenopausal women. Guided by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, searches were conducted in PubMed, CINAHL and PsycINFO to identify articles meeting pre-specified inclusion criteria. Of 670 unique articles identified, 37 were included in the review. Treatments included drug therapies and non-drug therapies. Palpitations were studied as an outcome in 89% of articles and as an adverse effect in 11%. Articles provided mostly level II/III evidence due to their design and/or small sample sizes. Based on available evidence, no therapies can be fully recommended for clinical practice. Only some hormonal agents (e.g. estradiol) can be recommended with caution based on some positive evidence for reducing palpitation prevalence or severity. However, other drug therapies (e.g. moxonidine, atenolol), dietary supplementary treatments (e.g. isoflavones, Rheum rhaponticum, sage), cognitive-behavioral intervention and auricular acupressure cannot be recommended given the existing evidence. Additional well-designed randomized controlled treatment trials focusing on palpitations during the menopause transition as an inclusion criteria and outcome are needed to advance the field.
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Affiliation(s)
- Y Sheng
- School of Nursing, Indiana University, Indianapolis, IN, USA
| | - J S Carpenter
- School of Nursing, Indiana University, Indianapolis, IN, USA
| | - C D Elomba
- School of Nursing, Indiana University, Indianapolis, IN, USA
| | - J S Alwine
- School of Nursing, Indiana University, Indianapolis, IN, USA
| | - M Yue
- College of Pharmacy, Purdue University, West Lafayette, IN, USA
| | - C X Chen
- School of Nursing, Indiana University, Indianapolis, IN, USA
| | - J E Tisdale
- College of Pharmacy, Purdue University, West Lafayette, IN, USA.,School of Medicine, Indiana University, Indianapolis, IN, USA
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22
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Wang QW, Huang P, Yue M, Huang EJ, Cai YS, Liang PD, Yao PP, Zhang Y, Tan WL, Yu RB. [Genetic characteristics of hantavirus from rodents in port area of Ningde , Fujian province in the summer of 2020]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1266-1273. [PMID: 34814542 DOI: 10.3760/cma.j.cn112338-20210126-00065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To explore the genetic characteristics and evolution of hantavirus carried by rodents in port area of Ningde in Fujian province in the summer of 2020. Methods: Rodents were captured in the port area of Ningde, the RNA was extracted from rodent lung tissues and detected by using specific kit. The positive samples were used for whole-genome sequencing of the virus. Bioinformatics software was used for the analysis on the similarity and genetic variation of the sequences. Results: A total of 112 rodents were captured, including 5 Rattus norvegicus and 2 Rattus flavipectus, the positive rate of hantavirus was 6.25% (7/112). By virus gene sequencing, two hantavirus complete genome sequences were obtained (named as FJ35 and FJ36, GenBank accession numbers: MW449188-MW449193). The genetic analysis results showed that the hantavirus detected in positive samples were SEOV and shared 99% nucleotide similarity with hantavirus strains LZSF21 and JX20140581 isolated from Shandong province. Phylogenetic analysis using the maximum likelihood method showed that the hantavirus detected in positive samples belonged to S3 subtype, sharing the same subtype with hantavirus strains Z37 from Zhejiang province, LZSF21 from Shandong province, and zy27 and Gongzhuling 415 from northeastern China. Compared with FJ372, the amino acid variation of N259S was observed at sites 251-264 of nucleoprotein, which might be related to antigenicity. Another variation of Q81R was observed in glycoprotein compared with SEOV 80-39 segment of coded amino acid of international reference strain, which might also cause the change in antigenicity. Conclusion: The high positive rate of hantavirus in rodents in the port area of Ningde- would increase the risk of natural human infection and epidemic in local area. The hantavirus positive rodents in this focus might be from an endemic area in Shandong. It is necessary to strengthen the imported rodent control in the port area of Ningde. The virus detected in 2 positive samples belonged to SEOV subtype Ⅲ and shared high homologies of nucleotides and amino acid sequences with the hantavirus strains in surrounding area. However, some slight variations occurred in glycoprotein and nucleoprotein amino acid sequences, which might cause changes in its antigeniity.
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Affiliation(s)
- Q W Wang
- D1 Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - P Huang
- D1 Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - M Yue
- Jiangsu Province Hospital, Nanjing 210029, China
| | - E J Huang
- Fuzhou International Travel Health Care Center, Fuzhou 350001, China
| | - Y S Cai
- Fuzhou International Travel Health Care Center, Fuzhou 350001, China
| | - P D Liang
- Fuzhou International Travel Health Care Center, Fuzhou 350001, China
| | - P P Yao
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China
| | - Y Zhang
- Eastern Theater Command Centers for Disease Control and Prevention, Chinese People's Liberation Army, Nanjing 210002, China
| | - W L Tan
- Eastern Theater Command Centers for Disease Control and Prevention, Chinese People's Liberation Army, Nanjing 210002, China
| | - R B Yu
- D1 Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
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23
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Cook CN, Wu Y, Odeh HM, Gendron TF, Jansen-West K, Del Rosso G, Yue M, Jiang P, Gomes E, Tong J, Daughrity LM, Avendano NM, Castanedes-Casey M, Shao W, Oskarsson B, Tomassy GS, McCampbell A, Rigo F, Dickson DW, Shorter J, Zhang YJ, Petrucelli L. C9orf72 poly(GR) aggregation induces TDP-43 proteinopathy. Sci Transl Med 2021; 12:12/559/eabb3774. [PMID: 32878979 DOI: 10.1126/scitranslmed.abb3774] [Citation(s) in RCA: 99] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 06/19/2020] [Indexed: 12/14/2022]
Abstract
TAR DNA-binding protein 43 (TDP-43) inclusions are a pathological hallmark of frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS), including cases caused by G4C2 repeat expansions in the C9orf72 gene (c9FTD/ALS). Providing mechanistic insight into the link between C9orf72 mutations and TDP-43 pathology, we demonstrated that a glycine-arginine repeat protein [poly(GR)] translated from expanded G4C2 repeats was sufficient to promote aggregation of endogenous TDP-43. In particular, toxic poly(GR) proteins mediated sequestration of full-length TDP-43 in an RNA-independent manner to induce cytoplasmic TDP-43 inclusion formation. Moreover, in GFP-(GR)200 mice, poly(GR) caused the mislocalization of nucleocytoplasmic transport factors and nuclear pore complex proteins. These mislocalization events resulted in the aberrant accumulation of endogenous TDP-43 in the cytoplasm where it co-aggregated with poly(GR). Last, we demonstrated that treating G4C2 repeat-expressing mice with repeat-targeting antisense oligonucleotides lowered poly(GR) burden, which was accompanied by reduced TDP-43 pathology and neurodegeneration, including lowering of plasma neurofilament light (NFL) concentration. These results contribute to clarification of the mechanism by which poly(GR) drives TDP-43 proteinopathy, confirm that G4C2-targeted therapeutics reduce TDP-43 pathology in vivo, and demonstrate that alterations in plasma NFL provide insight into the therapeutic efficacy of disease-modifying treatments.
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Affiliation(s)
- Casey N Cook
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA
| | - Yanwei Wu
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Hana M Odeh
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Tania F Gendron
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA
| | - Karen Jansen-West
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Giulia Del Rosso
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Peizhou Jiang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Edward Gomes
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jimei Tong
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Nicole M Avendano
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Wei Shao
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Björn Oskarsson
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | | | - Frank Rigo
- Ionis Pharmaceuticals, Carlsbad, CA 92010, USA
| | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA
| | - James Shorter
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | - Yong-Jie Zhang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA. .,Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA. .,Neurobiology of Disease Graduate Program, Mayo Graduate School, Mayo Clinic College of Medicine, Rochester, MN 55902, USA
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24
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Feng S, Han L, Yue M, Zhong D, Cao J, Guo Y, Sun Y, Zhang H, Cao Z, Cui X, Liu R. Frequency detection of BRAF V600E mutation in a cohort of pediatric langerhans cell histiocytosis patients by next-generation sequencing. Orphanet J Rare Dis 2021; 16:272. [PMID: 34116682 PMCID: PMC8196454 DOI: 10.1186/s13023-021-01912-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 06/07/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Langerhans cell histiocytosis (LCH) is a rare neoplastic disease that occurs in both children and adults, and BRAF V600E is detected in up to 64% of the patients. Several studies have discussed the associations between BRAF V600E mutation and clinicopathological manifestations, but no clear conclusions have been drawn regarding the clinical significance of the mutation in pediatric patients. RESULTS We retrieved the clinical information for 148 pediatric LCH patients and investigated the BRAF V600E mutation using next-generation sequencing alone or with droplet digital PCR. The overall positive rate of BRAF V600E was 60/148 (41%). The type of sample (peripheral blood and formalin-fixed paraffin-embedded tissue) used for testing was significantly associated with the BRAF V600E mutation status (p-value = 0.000 and 0.000). The risk of recurrence declined in patients who received targeted therapy (p-value = 0.006; hazard ratio 0.164, 95%CI: 0.046 to 0.583). However, no correlation was found between the BRAF V600E status and gender, age, stage, specific organ affected, TP53 mutation status, masses close to the lesion or recurrence. CONCLUSIONS This is the largest pediatric LCH study conducted with a Chinese population to date. BRAF V600E in LCH may occur less in East Asian populations than in other ethnic groups, regardless of age. Biopsy tissue is a more sensitive sample for BRAF mutation screening because not all of circulating DNA is tumoral. Approaches with low limit of detection or high sensitivity are recommended for mutation screening to avoid type I and II errors.
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Affiliation(s)
- Shunqiao Feng
- Department of Hematology, Children's Hospital of Capital Institute of Pediatrics, Beijing, 100020, China
| | - Lin Han
- Running Gene Inc, Beijing, China
| | - Mei Yue
- Department of Hematology, Children's Hospital of Capital Institute of Pediatrics, Beijing, 100020, China
| | - Dixiao Zhong
- Department of Hematology, Children's Hospital of Capital Institute of Pediatrics, Beijing, 100020, China
| | - Jing Cao
- Department of Hematology, Children's Hospital of Capital Institute of Pediatrics, Beijing, 100020, China
| | | | | | | | | | - Xiaodai Cui
- Department of Key Laboratory, Children's Hospital of Capital Institute of Pediatrics, Beijing, 100020, China.
| | - Rong Liu
- Department of Hematology, Children's Hospital of Capital Institute of Pediatrics, Beijing, 100020, China.
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25
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Todd TW, McEachin ZT, Chew J, Burch AR, Jansen-West K, Tong J, Yue M, Song Y, Castanedes-Casey M, Kurti A, Dunmore JH, Fryer JD, Zhang YJ, San Millan B, Teijeira Bautista S, Arias M, Dickson D, Gendron TF, Sobrido MJ, Disney MD, Bassell GJ, Rossoll W, Petrucelli L. Hexanucleotide Repeat Expansions in c9FTD/ALS and SCA36 Confer Selective Patterns of Neurodegeneration In Vivo. Cell Rep 2021; 31:107616. [PMID: 32375043 DOI: 10.1016/j.celrep.2020.107616] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/25/2020] [Accepted: 04/14/2020] [Indexed: 01/15/2023] Open
Abstract
A G4C2 hexanucleotide repeat expansion in an intron of C9orf72 is the most common cause of frontal temporal dementia and amyotrophic lateral sclerosis (c9FTD/ALS). A remarkably similar intronic TG3C2 repeat expansion is associated with spinocerebellar ataxia 36 (SCA36). Both expansions are widely expressed, form RNA foci, and can undergo repeat-associated non-ATG (RAN) translation to form similar dipeptide repeat proteins (DPRs). Yet, these diseases result in the degeneration of distinct subsets of neurons. We show that the expression of these repeat expansions in mice is sufficient to recapitulate the unique features of each disease, including this selective neuronal vulnerability. Furthermore, only the G4C2 repeat induces the formation of aberrant stress granules and pTDP-43 inclusions. Overall, our results demonstrate that the pathomechanisms responsible for each disease are intrinsic to the individual repeat sequence, highlighting the importance of sequence-specific RNA-mediated toxicity in each disorder.
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Affiliation(s)
- Tiffany W Todd
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Zachary T McEachin
- Department of Cell Biology, Emory University, Atlanta, GA 30322, USA; Laboratory for Translational Cell Biology, Emory University, Atlanta, GA 30322, USA; Wallace H. Coulter Graduate Program in Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, GA 30332, USA
| | - Jeannie Chew
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Alexander R Burch
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Karen Jansen-West
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Jimei Tong
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Yuping Song
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Aishe Kurti
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Judith H Dunmore
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - John D Fryer
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Yong-Jie Zhang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Beatriz San Millan
- Rare Diseases and Pediatric Medicine Research Group, Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain; Pathology Department, Complexo Hospitalario Universitario de Vigo (CHUVI), SERGAS, Vigo, Spain
| | - Susana Teijeira Bautista
- Rare Diseases and Pediatric Medicine Research Group, Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain; Pathology Department, Complexo Hospitalario Universitario de Vigo (CHUVI), SERGAS, Vigo, Spain
| | - Manuel Arias
- Neurogenetics Research Group, Instituto de Investigación Sanitaria (IDIS), Hospital Clínico Universitario, SERGAS, Santiago de Compostela, Spain; Department of Neurology, Hospital Clínico Universitario, SERGAS, Santiago de Compostela, Spain
| | - Dennis Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Tania F Gendron
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - María-Jesús Sobrido
- Neurogenetics Research Group, Instituto de Investigación Sanitaria (IDIS), Hospital Clínico Universitario, SERGAS, Santiago de Compostela, Spain; Centro de Investigación Biomédica en red de Enfermedades Raras (CIBERER), Santiago de Compostela, Spain
| | - Matthew D Disney
- Department of Chemistry, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
| | - Gary J Bassell
- Department of Cell Biology, Emory University, Atlanta, GA 30322, USA; Laboratory for Translational Cell Biology, Emory University, Atlanta, GA 30322, USA; Wallace H. Coulter Graduate Program in Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, GA 30332, USA
| | - Wilfried Rossoll
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.
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26
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Wojtas AM, Carlomagno Y, Sens JP, Kang SS, Jensen TD, Kurti A, Baker KE, Berry TJ, Phillips VR, Castanedes MC, Awan A, DeTure M, De Castro CHF, Librero AL, Yue M, Daughrity L, Jansen-West KR, Cook CN, Dickson DW, Petrucelli L, Fryer JD. Clusterin ameliorates tau pathology in vivo by inhibiting fibril formation. Acta Neuropathol Commun 2020; 8:210. [PMID: 33261653 PMCID: PMC7708249 DOI: 10.1186/s40478-020-01079-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 11/10/2022] Open
Abstract
The molecular chaperone Clusterin (CLU) impacts the amyloid pathway in Alzheimer's disease (AD) but its role in tau pathology is unknown. We observed CLU co-localization with tau aggregates in AD and primary tauopathies and CLU levels were upregulated in response to tau accumulation. To further elucidate the effect of CLU on tau pathology, we utilized a gene delivery approach in CLU knock-out (CLU KO) mice to drive expression of tau bearing the P301L mutation. We found that loss of CLU was associated with exacerbated tau pathology and anxiety-like behaviors in our mouse model of tauopathy. Additionally, we found that CLU dramatically inhibited tau fibrilization using an in vitro assay. Together, these results demonstrate that CLU plays a major role in both amyloid and tau pathologies in AD.
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Affiliation(s)
- Aleksandra M Wojtas
- Department of Neuroscience, Mayo Clinic, Collaborative Research Building CR03-010 13400 E. Shea Blvd, Scottsdale, AZ, 85259, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Scottsdale, AZ, 85259, USA
| | - Yari Carlomagno
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Jonathon P Sens
- Department of Neuroscience, Mayo Clinic, Collaborative Research Building CR03-010 13400 E. Shea Blvd, Scottsdale, AZ, 85259, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Scottsdale, AZ, 85259, USA
| | - Silvia S Kang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Tanner D Jensen
- Department of Neuroscience, Mayo Clinic, Collaborative Research Building CR03-010 13400 E. Shea Blvd, Scottsdale, AZ, 85259, USA
| | - Aishe Kurti
- Department of Neuroscience, Mayo Clinic, Collaborative Research Building CR03-010 13400 E. Shea Blvd, Scottsdale, AZ, 85259, USA
| | - Kelsey E Baker
- Department of Neuroscience, Mayo Clinic, Collaborative Research Building CR03-010 13400 E. Shea Blvd, Scottsdale, AZ, 85259, USA
| | - Taylor J Berry
- Department of Neuroscience, Mayo Clinic, Collaborative Research Building CR03-010 13400 E. Shea Blvd, Scottsdale, AZ, 85259, USA
| | | | | | - Ayesha Awan
- Department of Neuroscience, Mayo Clinic, Collaborative Research Building CR03-010 13400 E. Shea Blvd, Scottsdale, AZ, 85259, USA
| | - Michael DeTure
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | | | - Ariston L Librero
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Lillian Daughrity
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | | | - Casey N Cook
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Scottsdale, AZ, 85259, USA
| | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Scottsdale, AZ, 85259, USA
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Scottsdale, AZ, 85259, USA
| | - John D Fryer
- Department of Neuroscience, Mayo Clinic, Collaborative Research Building CR03-010 13400 E. Shea Blvd, Scottsdale, AZ, 85259, USA.
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Scottsdale, AZ, 85259, USA.
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27
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Prudencio M, Humphrey J, Pickles S, Brown AL, Hill SE, Kachergus JM, Shi J, Heckman MG, Spiegel MR, Cook C, Song Y, Yue M, Daughrity LM, Carlomagno Y, Jansen-West K, de Castro CF, DeTure M, Koga S, Wang YC, Sivakumar P, Bodo C, Candalija A, Talbot K, Selvaraj BT, Burr K, Chandran S, Newcombe J, Lashley T, Hubbard I, Catalano D, Kim D, Propp N, Fennessey S, Fagegaltier D, Phatnani H, Secrier M, Fisher EM, Oskarsson B, van Blitterswijk M, Rademakers R, Graff-Radford NR, Boeve BF, Knopman DS, Petersen RC, Josephs KA, Thompson EA, Raj T, Ward M, Dickson DW, Gendron TF, Fratta P, Petrucelli L. Truncated stathmin-2 is a marker of TDP-43 pathology in frontotemporal dementia. J Clin Invest 2020; 130:6080-6092. [PMID: 32790644 PMCID: PMC7598060 DOI: 10.1172/jci139741] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 08/11/2020] [Indexed: 12/12/2022] Open
Abstract
No treatment for frontotemporal dementia (FTD), the second most common type of early-onset dementia, is available, but therapeutics are being investigated to target the 2 main proteins associated with FTD pathological subtypes: TDP-43 (FTLD-TDP) and tau (FTLD-tau). Testing potential therapies in clinical trials is hampered by our inability to distinguish between patients with FTLD-TDP and FTLD-tau. Therefore, we evaluated truncated stathmin-2 (STMN2) as a proxy of TDP-43 pathology, given the reports that TDP-43 dysfunction causes truncated STMN2 accumulation. Truncated STMN2 accumulated in human induced pluripotent stem cell-derived neurons depleted of TDP-43, but not in those with pathogenic TARDBP mutations in the absence of TDP-43 aggregation or loss of nuclear protein. In RNA-Seq analyses of human brain samples from the NYGC ALS cohort, truncated STMN2 RNA was confined to tissues and disease subtypes marked by TDP-43 inclusions. Last, we validated that truncated STMN2 RNA was elevated in the frontal cortex of a cohort of patients with FTLD-TDP but not in controls or patients with progressive supranuclear palsy, a type of FTLD-tau. Further, in patients with FTLD-TDP, we observed significant associations of truncated STMN2 RNA with phosphorylated TDP-43 levels and an earlier age of disease onset. Overall, our data uncovered truncated STMN2 as a marker for TDP-43 dysfunction in FTD.
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Affiliation(s)
- Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, USA
| | - Jack Humphrey
- Ronald M. Loeb Center for Alzheimer’s Disease, Nash Family Department of Neuroscience and Friedman Brain Institute, and
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Sarah Pickles
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, USA
| | - Anna-Leigh Brown
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, United Kingdom
| | - Sarah E. Hill
- National Institute of Neurological Disorders and Stroke (NINDS), NIH, Bethesda, Maryland, USA
| | | | - J. Shi
- Department of Cancer Biology, and
| | - Michael G. Heckman
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Jacksonville, Florida, USA
| | - Matthew R. Spiegel
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Jacksonville, Florida, USA
| | - Casey Cook
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, USA
| | - Yuping Song
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
| | | | - Yari Carlomagno
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, USA
| | | | | | - Michael DeTure
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, USA
| | - Shunsuke Koga
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, USA
| | - Ying-Chih Wang
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Prasanth Sivakumar
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, United Kingdom
| | - Cristian Bodo
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, United Kingdom
| | - Ana Candalija
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
| | - Kevin Talbot
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
| | - Bhuvaneish T. Selvaraj
- UK Dementia Research Institute and Euan MacDonald Centre for Motor Neurone Disease (MND) Research, The University of Edinburgh, United Kingdom
| | - Karen Burr
- UK Dementia Research Institute and Euan MacDonald Centre for Motor Neurone Disease (MND) Research, The University of Edinburgh, United Kingdom
| | - Siddharthan Chandran
- UK Dementia Research Institute and Euan MacDonald Centre for Motor Neurone Disease (MND) Research, The University of Edinburgh, United Kingdom
| | | | - Tammaryn Lashley
- Department of Neurodegenerative Disease, and
- Queen Square Brain Bank for Neurological Disorders, Department of Clinical and Movement Neuroscience, UCL Queen Square Institute of Neurology, London, United Kingdom
| | | | | | - Duyang Kim
- Center for Genomics of Neurodegenerative Disease, and
| | - Nadia Propp
- Center for Genomics of Neurodegenerative Disease, and
| | | | | | | | | | - Maria Secrier
- University College London Genetics Institute, London, United Kingdom
| | - Elizabeth M.C. Fisher
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, United Kingdom
| | - Björn Oskarsson
- Department of Neurology, Mayo Clinic, Jacksonville, Florida, USA
| | - Marka van Blitterswijk
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, USA
| | - Rosa Rademakers
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, USA
| | | | | | | | | | | | | | - Towfique Raj
- Ronald M. Loeb Center for Alzheimer’s Disease, Nash Family Department of Neuroscience and Friedman Brain Institute, and
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Michael Ward
- National Institute of Neurological Disorders and Stroke (NINDS), NIH, Bethesda, Maryland, USA
| | - Dennis W. Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, USA
| | - Tania F. Gendron
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, USA
| | - Pietro Fratta
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, United Kingdom
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida, USA
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28
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Huang P, Wang CH, Zhuo LY, Xia XS, Yang S, Zhang JW, Fan HZ, Wu JJ, Yu R, Yue M, Zhang Y. Polymorphisms rs763110 in FASL is linked to hepatitis C virus infection among high-risk populations. Br J Biomed Sci 2020; 77:112-117. [PMID: PMID: 32209020 DOI: 10.1080/09674845.2020.1747182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND The Fas cell surface death receptor (FAS) and Fas ligand (FASL) can participate in the apoptosis of immune cells and target cells infected with a virus through the FAS-FASL signalling pathway. The decoy receptor 3 (DCR3) can competitively inhibit the binding of FAS to FASL. Our aim is to investigate the effect of single nucleotide polymorphisms (SNPs) in FAS, FASL and DCR3 on hepatitis C virus (HCV) infection. METHODS Four SNPs (rs763110 in FASL, rs1324551 and rs2234767 in FAS and rs2257440 in DCR3) were genotyped in 1495 controls free of HCV, 522 individuals with spontaneous HCV clearance and 732 patients with hepatitis C virus infection. The RegulomeDB database and RNAfold web servers were used to explore potential biological functions of SNPs. RESULTS FASL rs763110 was associated with susceptibility to HCV infection, and not to CHC. The odds ratio (95% confidence interval) of HCV infection in high-risk populations carrying FASL rs763110-TT was 1.82 (1.36-2.51, P < 0.001) compared to that of CC genotypes and 1.93 (1.43-2.60, P < 0.001) higher than that of CC + CT genotypes. Based on computer simulation, FASL rs763110-T may affect the transcription of mRNA by affecting the binding of a transcription factor, leading to structural changes in mRNA. CONCLUSION The genetic variant in FASL is linked with HCV infection, but not to spontaneous HCV clearance.
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Affiliation(s)
- P Huang
- Department of Epidemiology and Biostatistics, Key Laboratory of Infectious Diseases, Nanjing Medical University , Nanjing, China.,Institute of Epidemiology and Microbiology, Eastern Theater Command Centers for Disease Control and Prevention , Nanjing, China
| | - C H Wang
- Institute of Epidemiology and Microbiology, Eastern Theater Command Centers for Disease Control and Prevention , Nanjing, China
| | - L Y Zhuo
- Department of Epidemiology and Biostatistics, Key Laboratory of Infectious Diseases, Nanjing Medical University , Nanjing, China
| | - X S Xia
- College of Life Science and Technology, Kunming University of Science and Technology , Kunming, China
| | - S Yang
- Department of Biostatistics, School of Public Health, Nanjing Medical University , Nanjing, China
| | - J W Zhang
- Department of Anesthesiology, Affiliated Drum-Tower Hospital of Medical College of Nanjing University , Jiangsu, China
| | - H Z Fan
- Department of Information, The First Affiliated Hospital of Nanjing Medical University , Nanjing, China
| | - J J Wu
- Department of Epidemiology and Biostatistics, Key Laboratory of Infectious Diseases, Nanjing Medical University , Nanjing, China
| | - R Yu
- Department of Epidemiology and Biostatistics, Key Laboratory of Infectious Diseases, Nanjing Medical University , Nanjing, China
| | - M Yue
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University , Nanjing, China.,State Key Laboratory of Virology, School of Basic Medical Sciences, Wuhan University , Wuhan, China
| | - Y Zhang
- Department of Epidemiology and Biostatistics, Key Laboratory of Infectious Diseases, Nanjing Medical University , Nanjing, China.,Institute of Epidemiology and Microbiology, Eastern Theater Command Centers for Disease Control and Prevention , Nanjing, China
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Yue M, Zhang D, Yang HY, Wang JX, Jiang Y, Guo F, Xie T, Zhang GF. [Long-term efficacy analysis of laparoscopic-assisted anorectoplasty for high and middle imperforate anus]. Zhonghua Wei Chang Wai Ke Za Zhi 2019; 22:1177-1182. [PMID: 31874535 DOI: 10.3760/cma.j.issn.1671-0274.2019.12.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective: To explore the long-term efficacy of laparoscopic-assisted anorectoplasty and conventional anorectoplasty in the treatment of children with high and middle anal atresia. Methods: A retrospective cohort study was used. Inclusion criteria: (1) children with high and middle anal atresia; (2) complicated with rectourethral or rectovesical fistula; (3) complete follow-up data. Exclusion criteria: (1) complicated with 21-trisomy; (2) cerebral palsy and other mentaldisabilities; (3) Currarino syndrome; (4) FG syndrome. Clinical data of 88 patients with middle and high anal atresia, who complicated with rectourethral fistula or rectovesical fistula, and underwent anoplasty at Department of Pediatric Surgery, the First Affiliated Hospital of Zhengzhou University from January 2009 to June 2014 were enrolled in the study and analyzed. There were 24 cases with middle atresia and 64 cases with high atresia. All the cases were divided into 2 groups based on the operative method: laparoscopic group (laparoscopic-assisted anorectoplasty, 49 cases), pena group (posterior sagittal anorectoplasty, 39 cases). The demographic features of two groups were comparable. There were no statistically significant differences in gender, age, body mass, classification of anomaly types and sacral ratio (all P>0.05). Student t test and Chi square tests were used to compare the surgical conditions (operative time, postoperative hospital stay and complications), anal function (Kelly score), constipation (Krickenbeck constipation score) and anorectal pressure. Results: Children of both groups all completed operation ssuccessfully. There were no statistically significant differences between laparoscopic group and pena group in the operative time [(120±31) minutes vs. (112±23) minutes, t=1.343, P=0.091] and postoperative hospital stay [(7.1±2.3) days vs. (10.7±3.3) days, t=6.021, P=1.000]. Complications were more common in the pena group [16.3% (8/49) vs. 35.9% (14/39), χ(2)=4.436, P=0.035]. The main complications in laparoscopic group were anal prolapse (8.2%, 4/49) and anal stenosis (6.2%, 3/49), while in pena group were anal stenosis (12.8%, 5/39) and perioperative perianal skin erosion (10.3%, 4/39). As for the anal function, the degree of feces, defecation control and sphincter contractility, the single scoring differences of Kelly scoring system were not statistically significant between the two groups, but the proportion of good function in the laparoscopic group was higher than that in the pena group [67.3% (8/49) vs. 38.5% (15/39), χ(2)=7.308, P=0.007]. Constipation occurred in 6 (12.2%) patients in the laparoscopic group, of whom 5 were improved by diet regulation and 1 required laxatives, while 9 (23.1%) patients developed constipation in the pena group, of whom 4 were improved by diet regulation and 5 required long-term laxatives. The difference of constipation ratio was not statistically significant (χ(2)=1.802, P=0.180). There were no cases of Krickenbeck constipation grade 3. Compared to the pena group, the laparoscopic group had higher anal resting pressure [(33.35±9.69) mmHg vs. (27.68±10.74) mmHg, t=2.599, P=0.011], higher dilating pressure [(9.00±5.61) mmHg vs.(6.51±3.24) mmHg, t=2.462, P=0.016], higher maximal squeeze pressure [(65.80±17.23) mmHg vs. (56.74±18.93) mmHg, t=2.389, P=0.019] and longer maximal contraction time [(21.16±5.02) seconds vs. (18.44±7.24) seconds, t=2.079, P=0.041]. The rectal resting pressure [(5.36±3.00) mmHg vs. (4.61±3.93) mmHg, t=1.015, P=0.312] was not statistically significantly different. Conclusions: Compared with posterior sagittal anorectoplasty, laparoscopic-assisted anorectoplasty in the treatment of high and middle anal atresia has better long-term efficacy with less perioperative complications.
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Affiliation(s)
- M Yue
- Department of Pediatric Surgery, The First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - D Zhang
- Department of Pediatric Surgery, The First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - H Y Yang
- Department of Pediatric Surgery, The First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - J X Wang
- Department of Pediatric Surgery, The First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - Y Jiang
- Neonate Intensive Care Unit, The Maternal and Child Health Care Center of Jiujiang, Jiangxi Jiujiang 332000, China
| | - F Guo
- Department of Pediatric Surgery, The First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - T Xie
- Department of Pediatric Surgery, The First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - G F Zhang
- Department of Pediatric Surgery, The First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
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Zhu P, Yue M, Chen Q, Yao M, Wu JJ, Shao JG, Xue H, Zhang Y, Huang P, Wang CH. [Study of tumor necrosis factor receptor superfamily 1B gene polymorphism in relation to the outcomes of HCV infection]. Zhonghua Gan Zang Bing Za Zhi 2019; 27:793-798. [PMID: 31734995 DOI: 10.3760/cma.j.issn.1007-3418.2019.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the tumor necrosis factor receptor superfamily 1B gene (TNFRSF1B) polymorphism in relation to the outcomes of hepatitis C virus (HCV) infection. Methods: One thousand six hundred and forty-five cases without HCV infection, 545 cases with HCV clearance, and 783 cases with chronic HCV infection were enrolled. TaqMan probe method was used to investigate genotype rs1061622 (T > G) and rs1061624 (G > A). Two single nucleotide polymorphisms (SNPs) sites were genotyped and haplotypes were constructed to evaluate their relation with the outcome of HCV infection. Results: Logistic regression analysis showed that there was no relation to the two SNPs with HCV infection susceptibility and chronicity (P > 0.05). Haplotype analysis showed that carrier TA had an increased susceptibility to HCV infection [adjusted odds ratio (OR) = 1.15, 95% confidence interval (CI): 1.01 to 1.30, P = 0.038)]. Carrier TA and GG haplotypes were conducive to chronic HCV infection (adjusted OR = 1.28, 95% CI: 1.08 to 1.53, P = 0.006; OR = 1.31, 95% CI: 1.03 to 1.66, P = 0.026). Conclusion: The combinational effects of rs1061622 and rs1061624 in TNFRSF1B gene may increase the risk of HCV chronicity and infection.
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Affiliation(s)
- P Zhu
- Medical Department, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - M Yue
- Department of Infectious Diseases, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Q Chen
- Eastern Theater Command Centers for Disease Control and Prevention, Nanjing 210002, China
| | - M Yao
- Department of Immunology, Medical School of Nantong University, Nantong 226001, China
| | - J J Wu
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - J G Shao
- Department of Gastroenterology, the Nantong Third Affiliated Hospital of Nantong University, Nantong 226001, China
| | - H Xue
- Fourth Ward, the Nantong Third Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Y Zhang
- Eastern Theater Command Centers for Disease Control and Prevention, Nanjing 210002, China; Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - P Huang
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - C H Wang
- Eastern Theater Command Centers for Disease Control and Prevention, Nanjing 210002, China
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Wu JJ, Huang P, Yue M, Wang CH, Wu C, Shao JG, Xue H, Fu ZQ, Zhuo LY, Yu RB, Zhang Y. [Association between TNFRSF11A and TNFRSF11B gene polymorphisms and the outcome of hepatitis C virus infection]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:1291-1295. [PMID: 31658533 DOI: 10.3760/cma.j.issn.0254-6450.2019.10.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the relationship between the tumor necrosis factor receptor superfamily members 11A (TNFRSF11A) and 11B (TNFRSF11B) gene polymorphisms and the outcome of hepatitis C virus (HCV) infection. Methods: In this case-control study, 749 cases of persistent HCV infection, 494 cases of spontaneous clearance and 1 486 control subjects were included from 2008 to 2016. TaqMan-MGB probe method was used to detect the genotype of TNFRSF11A rs1805034 and TNFRSF11B rs2073617. The genotypes distribution of the two single nucleotide polymorphisms (SNP) were analyzed in different populations. Results: Co-dominant model showed that individuals carrying the rs2073617 CC genotype were prone to have chronic HCV infection, compared with individuals carrying the rs2073617 TT genotype (OR=1.517, 95%CI: 1.055-2.181, P=0.024). Recessive model results showed that individuals carrying rs2073617 CC genotype were more likely to develop chronic HCV infection compared with individuals carrying rs2073617 TT or TC genotype (OR=1.435, 95%CI: 1.033-1.996, P=0.032). Additive model showed that the risk for chronic HCV infection increased with the increase of the number of rs2073617 C alleles (OR=1.204, 95%CI: 1.013-1.431, P=0.035). Conclusion: The genetic polymorphism of TNFRSF11B rs2073617 might be related with the chronicity of HCV infection.
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Affiliation(s)
- J J Wu
- Key Laboratory of Infectious Diseases, Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - P Huang
- Key Laboratory of Infectious Diseases, Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - M Yue
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - C H Wang
- Eastern Theater Command Center for Disease Prevention and Control, Nanjing 210002, China
| | - C Wu
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - J G Shao
- Department of Gastroenterology, The Third People's Hospital of Nantong Affiliated to Nantong University, Nantong 226001, China
| | - H Xue
- Fourth Ward, The Third People's Hospital of Nantong Affiliated to Nantong University, Nantong 226001, China
| | - Z Q Fu
- Key Laboratory of Infectious Diseases, Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - L Y Zhuo
- Key Laboratory of Infectious Diseases, Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - R B Yu
- Key Laboratory of Infectious Diseases, Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Y Zhang
- Key Laboratory of Infectious Diseases, Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Eastern Theater Command Center for Disease Prevention and Control, Nanjing 210002, China
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Nuvoli S, Caruana G, Babudieri S, Solinas P, Pellicanò G, Piras B, Fiore V, Bagella P, Calia GM, Yue M, Spanu A, Madeddu G. Body fat changes in HIV patients on highly active antiretroviral therapy (HAART): a longitudinal DEXA study. Eur Rev Med Pharmacol Sci 2019; 22:1852-1859. [PMID: 29630136 DOI: 10.26355/eurrev_201803_14606] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE We aimed to quantitatively evaluate body fat composition in a group of HIV patients treated with Highly Active Anti-retroviral Therapy (HAART) to ascertain both fat loss and fat distribution changes and to identify possible therapeutic and host related associated risk factors. PATIENTS AND METHODS A total of 180 patients with available total body DEXA scan were assigned to a) Group 1, with clinically evident body fat changes, (BFC) and b) Group 2, without BFC. Clinical and immunovirologic data were collected. We used Student t-test and x2 or Fisher exact test to compare the characteristics of the two groups. Paired t-test was used to compare basal and follow-up data. The relationships between variables were evaluated by calculating Pearson's correlation coefficient and its significance. RESULTS HAART duration was significantly (p<0.0001) higher for patients in Group 1 than in Group 2, as well as PI (p<0.02) and NRTI (p<0.002) therapy duration. Current CD4 count and CD4 rise from nadir resulted significantly higher in Group 1 than in Group 2 (p<0.02 and 0.006, respectively). Whole Body Fat (WBF), Peripheral Fat (PF) and Leg (L) fat negatively correlated with PI and NRTI therapy duration, while Trunk Fat (TF)/PF positively correlated with PI and NNRTI duration. No significant correlation was found, instead, with NNRTI therapy duration. At 5-year follow-up, we registered a further increase in TF, Arms (A) and L fat, especially in PI-treated patients. CONCLUSIONS Body fat changes should always be considered when dealing with HIV-affected patients on HAART. The fat loss seemed to involve mainly peripheral regions, while fat accumulation tendency occurred in the trunk.
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Affiliation(s)
- S Nuvoli
- Unit of Nuclear Medicine, Department of Medical, Surgical and Experimental Sciences, University of Sassari, Sassari, Italy.
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Yue M, Yang J, Jin M, Steiert B, Xiang Y, Zhang H, Hagenbuch B, Gui C. Gly45 and Phe555 in Transmembrane Domains 1 and 10 Are Critical for the Activation of Organic Anion Transporting Polypeptide 1B3 by Epigallocatechin Gallate. J Agric Food Chem 2019; 67:9079-9087. [PMID: 31353905 PMCID: PMC6892160 DOI: 10.1021/acs.jafc.9b03812] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Organic anion transporting polypeptides (OATPs) 1B1 and 1B3 are two highly homologous transporters expressed in the human liver. However, epigallocatechin gallate (EGCG), which is the most predominant catechin in green tea, has opposite effects on the function of OATP1B1 and OATP1B3. In the present study, the critical structural domains and amino acid residues for the activation of OATP1B3 by EGCG have been determined by characterizing the function of a series of OATP1B3-derived chimeric transporters, site-directed mutagenesis, and kinetic studies. Our results showed that G45 and F555 in transmembrane domains 1 and 10 are the most important amino acid residues for OATP1B3 activation. Kinetic studies showed that the activation of OATP1B3 by EGCG at a low substrate concentration was due to its increased substrate binding affinity. However, EGCG caused increased Km and decreased Vmax for 1B3-G45A and 1B3-F555H. The flexibility at position 45 and aromaticity at position 555 might be important for OATP1B3 activation. While 1B3-G45A and 1B3-F555H could not be activated by EGCG, their transport activity for EGCG was comparable to that of wild-type OATP1B3. In conclusion, the present study elucidated the molecular mechanism for OATP1B3 activation by EGCG.
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Affiliation(s)
- Mei Yue
- Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Jingjie Yang
- Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Meng Jin
- Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Brianna Steiert
- Department of Pharmacology, Toxicology and Therapeutics, the University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Yiqun Xiang
- Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Hongjian Zhang
- Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Bruno Hagenbuch
- Department of Pharmacology, Toxicology and Therapeutics, the University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Chunshan Gui
- Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
- Corresponding author: Chunshan Gui, Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou Industrial Park, Suzhou 215123, China. Tel.: +86-512-65882089; Fax: +86-512-65882089
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Zhang YJ, Guo L, Gonzales PK, Gendron TF, Wu Y, Jansen-West K, O'Raw AD, Pickles SR, Prudencio M, Carlomagno Y, Gachechiladze MA, Ludwig C, Tian R, Chew J, DeTure M, Lin WL, Tong J, Daughrity LM, Yue M, Song Y, Andersen JW, Castanedes-Casey M, Kurti A, Datta A, Antognetti G, McCampbell A, Rademakers R, Oskarsson B, Dickson DW, Kampmann M, Ward ME, Fryer JD, Link CD, Shorter J, Petrucelli L. Heterochromatin anomalies and double-stranded RNA accumulation underlie C9orf72 poly(PR) toxicity. Science 2019; 363:eaav2606. [PMID: 30765536 PMCID: PMC6524780 DOI: 10.1126/science.aav2606] [Citation(s) in RCA: 141] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 12/07/2018] [Accepted: 01/14/2019] [Indexed: 12/12/2022]
Abstract
How hexanucleotide GGGGCC (G4C2) repeat expansions in C9orf72 cause frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS) is not understood. We developed a mouse model engineered to express poly(PR), a proline-arginine (PR) dipeptide repeat protein synthesized from expanded G4C2 repeats. The expression of green fluorescent protein-conjugated (PR)50 (a 50-repeat PR protein) throughout the mouse brain yielded progressive brain atrophy, neuron loss, loss of poly(PR)-positive cells, and gliosis, culminating in motor and memory impairments. We found that poly(PR) bound DNA, localized to heterochromatin, and caused heterochromatin protein 1α (HP1α) liquid-phase disruptions, decreases in HP1α expression, abnormal histone methylation, and nuclear lamina invaginations. These aberrations of histone methylation, lamins, and HP1α, which regulate heterochromatin structure and gene expression, were accompanied by repetitive element expression and double-stranded RNA accumulation. Thus, we uncovered mechanisms by which poly(PR) may contribute to the pathogenesis of C9orf72-associated FTD and ALS.
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Affiliation(s)
- Yong-Jie Zhang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Lin Guo
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Patrick K Gonzales
- Department of Integrative Physiology, Institute for Behavioral Genetics, University of Colorado, Boulder, CO, USA
| | - Tania F Gendron
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Yanwei Wu
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | - Aliesha D O'Raw
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - Sarah R Pickles
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Yari Carlomagno
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - Mariam A Gachechiladze
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Connor Ludwig
- Institute for Neurodegenerative Diseases, Department of Biochemistry and Biophysics, University of California, San Francisco, and Chan Zuckerberg Biohub, San Francisco, CA, USA
| | - Ruilin Tian
- Institute for Neurodegenerative Diseases, Department of Biochemistry and Biophysics, University of California, San Francisco, and Chan Zuckerberg Biohub, San Francisco, CA, USA
| | - Jeannie Chew
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Michael DeTure
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Wen-Lang Lin
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - Jimei Tong
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - Yuping Song
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | | | - Aishe Kurti
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | | | | | | | - Rosa Rademakers
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | | | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Martin Kampmann
- Institute for Neurodegenerative Diseases, Department of Biochemistry and Biophysics, University of California, San Francisco, and Chan Zuckerberg Biohub, San Francisco, CA, USA
| | - Michael E Ward
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - John D Fryer
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
| | - Christopher D Link
- Department of Integrative Physiology, Institute for Behavioral Genetics, University of Colorado, Boulder, CO, USA
| | - James Shorter
- Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA.
- Neuroscience Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, FL, USA
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Carlomagno Y, Chung DEC, Yue M, Kurti A, Avendano NM, Castanedes-Casey M, Hinkle KM, Jansen-West K, Daughrity LM, Tong J, Phillips V, Rademakers R, DeTure M, Fryer JD, Dickson DW, Petrucelli L, Cook C. Enhanced phosphorylation of T153 in soluble tau is a defining biochemical feature of the A152T tau risk variant. Acta Neuropathol Commun 2019; 7:10. [PMID: 30674342 PMCID: PMC6345061 DOI: 10.1186/s40478-019-0661-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 01/16/2019] [Indexed: 12/30/2022] Open
Abstract
Pathogenic mutations in the tau gene (microtubule associated protein tau, MAPT) are linked to the onset of tauopathy, but the A152T variant is unique in acting as a risk factor for a range of disorders including Alzheimer’s disease (AD), progressive supranuclear palsy (PSP), corticobasal degeneration (CBD), and dementia with Lewy bodies (DLB). In order to provide insight into the mechanism by which A152T modulates disease risk, we developed a novel mouse model utilizing somatic brain transgenesis with adeno-associated virus (AAV) to drive tau expression in vivo, and validated the model by confirming the distinct biochemical features of A152T tau in postmortem brain tissue from human carriers. Specifically, TauA152T-AAV mice exhibited increased tau phosphorylation that unlike animals expressing the pathogenic P301L mutation remained localized to the soluble fraction. To investigate the possibility that the A152T variant might alter the phosphorylation state of tau on T152 or the neighboring T153 residue, we generated a novel antibody that revealed significant accumulation of soluble tau species that were hyperphosphorylated on T153 (pT153) in TauA152T-AAV mice, which were absent the soluble fraction of TauP301L-AAV mice. Providing new insight into the role of A152T in modifying risk of tauopathy, as well as validating the TauA152T-AAV model, we demonstrate that the presence of soluble pT153-positive tau species in human postmortem brain tissue differentiates A152T carriers from noncarriers, independent of disease classification. These results implicate both phosphorylation of T153 and an altered solubility profile in the mechanism by which A152T modulates disease risk.
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Hu M, Liu P, Liu Y, Yue M, Wang Y, Wang S, Chen X, Zhou Y, Zhou J, Hu X, Ke Y, Hu H. Platelet Shp2 negatively regulates thrombus stability under high shear stress. J Thromb Haemost 2019; 17:220-231. [PMID: 30444570 DOI: 10.1111/jth.14335] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Indexed: 12/30/2022]
Abstract
Essentials Shp2 negatively regulates thrombus stability under pathological shear rate. Shp2 suppresses TXA2 receptor-mediated platelet dense granule secretion. Through αIIbβ3 outside-in signaling, Shp2 targets calmodulin-dependent activation of Akt. Shp2 may serve to prevent the formation of unwanted occlusive thrombi. SUMMARY: Background Perpetuation is the final phase of thrombus formation; however, its mechanisms and regulation are poorly understood. Objective To investigate the mechanism of Shp2 in platelet function and thrombosis. Methods and results We demonstrate that the platelet-expressed Src homology region 2 domain-containing protein tyrosine phosphatase Shp2 is a negative regulator of thrombus stability under high shear stress. In a ferric chloride-induced mesenteric arteriole thrombosis model, megakaryocyte/platelet-specific Shp2-deficient mice showed less thrombi shedding than wild-type mice, although their occlusion times were comparable. In accordance with this in vivo phenotype, a microfluidic whole-blood perfusion assay revealed that the thrombi formed on collagen surfaces by Shp2-deficient platelets were more stable under high shear rates than those produced by wild-type platelets. Whereas Shp2 deficiency did not alter platelet responsiveness towards thrombin, ADP and collagen stimulation, Shp2-deficient platelets showed increased dense granule secretion when stimulated by the thromboxane A2 analog U46619. Shp2 appears to act downstream of integrin αIIb β3 outside-in signaling, inhibiting the phosphorylation of Akt (Ser473 and Thr308) and dense granule secretion. Calmodulin was also shown to bind both Shp2 and Akt, linking Shp2 to Akt activation. Conclusions Platelet Shp2 negatively regulates thrombus perpetuation under high shear stress. This signaling pathway may constitute an important mechanism for the prevention of unwanted occlusive thrombus formation, without dramatically interfering with hemostasis.
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Affiliation(s)
- M Hu
- Department of Pathology and Pathophysiology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy
| | - P Liu
- Department of Pathology, Zhejiang University School of Medicine, Hangzhou, China
| | - Y Liu
- Department of Pathology and Pathophysiology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy
| | - M Yue
- Department of Pathology and Pathophysiology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy
| | - Y Wang
- Department of Pathology and Pathophysiology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy
| | - S Wang
- Department of Pathology and Pathophysiology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy
| | - X Chen
- Department of Pathology and Pathophysiology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy
| | - Y Zhou
- Department of Pathology and Pathophysiology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy
| | - J Zhou
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University School of Medicine, Hangzhou, China
| | - X Hu
- Department of Cardiology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Y Ke
- Department of Pathology and Pathophysiology, Zhejiang University School of Medicine, Hangzhou, China
| | - H Hu
- Department of Pathology and Pathophysiology and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy
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Gendron TF, Chew J, Stankowski JN, Hayes LR, Zhang YJ, Prudencio M, Carlomagno Y, Daughrity LM, Jansen-West K, Perkerson EA, O'Raw A, Cook C, Pregent L, Belzil V, van Blitterswijk M, Tabassian LJ, Lee CW, Yue M, Tong J, Song Y, Castanedes-Casey M, Rousseau L, Phillips V, Dickson DW, Rademakers R, Fryer JD, Rush BK, Pedraza O, Caputo AM, Desaro P, Palmucci C, Robertson A, Heckman MG, Diehl NN, Wiggs E, Tierney M, Braun L, Farren J, Lacomis D, Ladha S, Fournier CN, McCluskey LF, Elman LB, Toledo JB, McBride JD, Tiloca C, Morelli C, Poletti B, Solca F, Prelle A, Wuu J, Jockel-Balsarotti J, Rigo F, Ambrose C, Datta A, Yang W, Raitcheva D, Antognetti G, McCampbell A, Van Swieten JC, Miller BL, Boxer AL, Brown RH, Bowser R, Miller TM, Trojanowski JQ, Grossman M, Berry JD, Hu WT, Ratti A, Traynor BJ, Disney MD, Benatar M, Silani V, Glass JD, Floeter MK, Rothstein JD, Boylan KB, Petrucelli L. Poly(GP) proteins are a useful pharmacodynamic marker for C9ORF72-associated amyotrophic lateral sclerosis. Sci Transl Med 2017; 9:9/383/eaai7866. [PMID: 28356511 DOI: 10.1126/scitranslmed.aai7866] [Citation(s) in RCA: 152] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 01/13/2017] [Indexed: 12/14/2022]
Abstract
There is no effective treatment for amyotrophic lateral sclerosis (ALS), a devastating motor neuron disease. However, discovery of a G4C2 repeat expansion in the C9ORF72 gene as the most common genetic cause of ALS has opened up new avenues for therapeutic intervention for this form of ALS. G4C2 repeat expansion RNAs and proteins of repeating dipeptides synthesized from these transcripts are believed to play a key role in C9ORF72-associated ALS (c9ALS). Therapeutics that target G4C2 RNA, such as antisense oligonucleotides (ASOs) and small molecules, are thus being actively investigated. A limitation in moving such treatments from bench to bedside is a lack of pharmacodynamic markers for use in clinical trials. We explored whether poly(GP) proteins translated from G4C2 RNA could serve such a purpose. Poly(GP) proteins were detected in cerebrospinal fluid (CSF) and in peripheral blood mononuclear cells from c9ALS patients and, notably, from asymptomatic C9ORF72 mutation carriers. Moreover, CSF poly(GP) proteins remained relatively constant over time, boding well for their use in gauging biochemical responses to potential treatments. Treating c9ALS patient cells or a mouse model of c9ALS with ASOs that target G4C2 RNA resulted in decreased intracellular and extracellular poly(GP) proteins. This decrease paralleled reductions in G4C2 RNA and downstream G4C2 RNA-mediated events. These findings indicate that tracking poly(GP) proteins in CSF could provide a means to assess target engagement of G4C2 RNA-based therapies in symptomatic C9ORF72 repeat expansion carriers and presymptomatic individuals who are expected to benefit from early therapeutic intervention.
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Affiliation(s)
- Tania F Gendron
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Mayo Graduate School, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Jeannie Chew
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Mayo Graduate School, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Lindsey R Hayes
- Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Yong-Jie Zhang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Mayo Graduate School, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Mercedes Prudencio
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Mayo Graduate School, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Yari Carlomagno
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Karen Jansen-West
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Aliesha O'Raw
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Casey Cook
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Mayo Graduate School, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Luc Pregent
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Veronique Belzil
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Marka van Blitterswijk
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Mayo Graduate School, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Lilia J Tabassian
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Chris W Lee
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Mayo Graduate School, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Jimei Tong
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Yuping Song
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Linda Rousseau
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Virginia Phillips
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Dennis W Dickson
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Mayo Graduate School, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Rosa Rademakers
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Mayo Graduate School, Mayo Clinic, Jacksonville, FL 32224, USA
| | - John D Fryer
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA.,Mayo Graduate School, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Beth K Rush
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Otto Pedraza
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Ana M Caputo
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Pamela Desaro
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Carla Palmucci
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Amelia Robertson
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA
| | | | - Nancy N Diehl
- Section of Biostatistics, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Edythe Wiggs
- Motor Neuron Disorders Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Michael Tierney
- Motor Neuron Disorders Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Laura Braun
- Motor Neuron Disorders Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jennifer Farren
- Motor Neuron Disorders Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - David Lacomis
- Departments of Neurology and Pathology, University of Pittsburgh School of Medicine and the University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Shafeeq Ladha
- Departments of Neurology and Neurobiology, Barrow Neurological Institute, Phoenix, AZ 85013, USA
| | - Christina N Fournier
- Department of Neurology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Leo F McCluskey
- Department of Neurology and the Penn Frontotemporal Degeneration Center, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Lauren B Elman
- Department of Neurology and the Penn Frontotemporal Degeneration Center, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jon B Toledo
- Department of Neurology, Houston Methodist Neurological Institute, Houston, TX 77030, USA.,Center for Neurodegenerative Disease Research, Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jennifer D McBride
- Center for Neurodegenerative Disease Research, Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Cinzia Tiloca
- Department of Neurology-Stroke Unit and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Claudia Morelli
- Department of Neurology-Stroke Unit and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Barbara Poletti
- Department of Neurology-Stroke Unit and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Federica Solca
- Department of Neurology-Stroke Unit and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Alessandro Prelle
- Department of Neurology and Stroke Unit, Ospedale Maggiore di Crema, Crema, Italy
| | - Joanne Wuu
- Department of Neurology, University of Miami, Miami, FL 33136, USA
| | | | - Frank Rigo
- Ionis Pharmaceuticals, 2855 Gazelle Court, Carlsbad, CA 92010, USA
| | | | - Abhishek Datta
- Protein Chemistry, Biogen Idec, Cambridge, MA 02142, USA
| | - Weixing Yang
- Protein Chemistry, Biogen Idec, Cambridge, MA 02142, USA
| | - Denitza Raitcheva
- Global Biomarker and Drug Discovery, Biogen Idec, Cambridge, MA 02142, USA
| | | | | | - John C Van Swieten
- Department of Neurology, Erasmus MC, University Medical Centre, Rotterdam, Netherlands
| | - Bruce L Miller
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Adam L Boxer
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Robert H Brown
- Department of Neurology, University of Massachusetts Medical School, Worcester, MA 01655, USA
| | - Robert Bowser
- Departments of Neurology and Neurobiology, Barrow Neurological Institute, Phoenix, AZ 85013, USA
| | - Timothy M Miller
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - John Q Trojanowski
- Center for Neurodegenerative Disease Research, Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Murray Grossman
- Department of Neurology and the Penn Frontotemporal Degeneration Center, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - James D Berry
- Neurological Clinical Research Institute, Massachusetts General Hospital, Boston, MA 02114, USA
| | - William T Hu
- Department of Neurology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Antonia Ratti
- Department of Neurology-Stroke Unit and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Milan, Italy.,Department of Pathophysiology and Transplantation, "Dino Ferrari" Centre, Università degli Studi di Milano, Milan, Italy
| | - Bryan J Traynor
- Neuromuscular Diseases Research Section, Laboratory of Neurogenetics, National Institute of Aging, National Institutes of Health, Bethesda, MD 20892, USA
| | - Matthew D Disney
- Department of Chemistry, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
| | - Michael Benatar
- Department of Neurology, University of Miami, Miami, FL 33136, USA
| | - Vincenzo Silani
- Department of Neurology-Stroke Unit and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Milan, Italy.,Department of Pathophysiology and Transplantation, "Dino Ferrari" Centre, Università degli Studi di Milano, Milan, Italy
| | - Jonathan D Glass
- Department of Neurology, Emory University School of Medicine, Atlanta, GA 30322, USA.,Department of Pathology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Mary Kay Floeter
- Motor Neuron Disorders Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jeffrey D Rothstein
- Brain Science Institute and Department of Neurology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Kevin B Boylan
- Department of Neurology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA. .,Mayo Graduate School, Mayo Clinic, Jacksonville, FL 32224, USA
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Yue M, Li F, Deng HY, Zhang LL, Liu YP. [Prognostic values of grading system for lymph vessel tumor emboli in patients with invasive breast carcinomas of no special type]. Zhonghua Zhong Liu Za Zhi 2017; 39:754-758. [PMID: 29061019 DOI: 10.3760/cma.j.issn.0253-3766.2017.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the grading system for lymph vessel tumor emboli and its prognostic value in patients with invasive carcinomas of no special type (ICNST) of the breast. Methods: Clinical data of 466patients with ICNST were collected from January 2006 to December 2008 in the Fourth Hospital of Hebei Medical University. The expression levels of D2-40, estrogen receptor(ER), progesterone receptor(PR) and human epidermal growth factor receptor 2 (HER-2) were analyzed using immunohistochemical staining. Grades for lymph vessel tumoremboli were classified based on the number of mitotic and apoptotic figures in tumor cells under a high-power field. Correlation analysis was performed using Spearman rank correlation test. Kaplan-meier curves and Log-rank tests were used to analyze the survival rate. Multivariate Cox proportional hazard model was used to analyze the prognostic factors. Results: Among the 466 patients, grades for lymph vessel tumor emboli were categorized as follows: 280 cases were grade 0 (60.1%); 112 cases were grade 1 (24.0%); 58 cases were grade 2 (12.5%); 16 cases were grade 3 (3.4%). Correlation analyses showed that lymph vessel tumor emboli grading system was positively correlated with lymph node metastasis (r=0.365, P<0.001). Kaplan-Meier univariant analysis showed that histological grading, lymph vessel tumor emboli grading system, lymph node metastasis, the expression levels of ER, PR and HER-2 and molecular typing were associated with prognosis of patients (P<0.05 for all). Multivariate analysis of Cox proportional hazard model showed that lymph vessel tumor emboli grading system and lymph node metastasis were independent prognostic factors in patients with ICNST(P<0.05 for all). Conclusion: Grading system for lymph vessel tumor emboli canpredict the clinical outcome of patients with ICNST.
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Affiliation(s)
- M Yue
- Department of pathology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - F Li
- Department of pathology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - H Y Deng
- Department of pathology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - L L Zhang
- Department of pathology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - Y P Liu
- Department of pathology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
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39
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Yao PP, Xu F, Sun YS, Yang ZR, Zhang Y, Yue M, Zhu HP. [Recombinant expression of hantaan virus protein N with application of Western-blot in detecting anti-hantavirus antibody]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 38:528-530. [PMID: 28468076 DOI: 10.3760/cma.j.issn.0254-6450.2017.04.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: S gene of hantavirus(HV) was expressed in insect cells by genetic engineering technology. The expression product of S gene was used as antigen to detect anti-HV specific antibody IgG in serum. Methods: Gene encoding NP of the strain HV-Z10 was amplified by PCR and then its eukaryotic expression system rBAC-Z10S-TN was constructed by using the routine genetic engineering method. SDS-PAGE was applied to measure the expression of rNP.Ion-exchange plus Ni-NTA-affinity chromatography was performed to purify the recombinant product. Indirect immuno-fluorescence assay (IFA) was used to determine the specific immune-reactivity of rNP. WB assay was established to detect the serum samples from 95 confirmed HFRS patients. Parameters related to the outcomes of detection were compared with the routine HV-IgG IFA method. Results: rBAC-Z10S-TN was able to express rNP with high efficiency. The purified rNP only showed a single protein fragment in the gel after SDS-PAGE. HV IgG could efficiently recognize rNP and hybridize with the recombinant protein. 97.67% of the serum samples from the HFRS patients were positive confirmed by WB. Conclusions: We successfully constructed a high efficient prokaryotic expression system of NP encoding gene from hantavirus strain HV-Z10. WB assay which was established in this study could be used as a new serological test for HFRS diagnosis, thanks to the simplicity, safety, sensitivity and specificity of this method.
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Affiliation(s)
- P P Yao
- Zhejiang Center for Disease Control and Prevention, Hangzhou 310051, China
| | - F Xu
- Zhejiang Center for Disease Control and Prevention, Hangzhou 310051, China
| | - Y S Sun
- Zhejiang Center for Disease Control and Prevention, Hangzhou 310051, China
| | - Z R Yang
- Zhejiang Center for Disease Control and Prevention, Hangzhou 310051, China
| | - Y Zhang
- Institute of Military Medicine, Nanjing Command, Nanjing 210002, China
| | - M Yue
- The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - H P Zhu
- Zhejiang Center for Disease Control and Prevention, Hangzhou 310051, China
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Zhu TG, Xiao X, Wei Q, Yue M, Zhang LX. Revealing potential long non-coding RNA biomarkers in lung adenocarcinoma using long non-coding RNA-mediated competitive endogenous RNA network. ACTA ACUST UNITED AC 2017; 50:e6297. [PMID: 28793054 PMCID: PMC5572850 DOI: 10.1590/1414-431x20176297] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 06/01/2017] [Indexed: 02/06/2023]
Abstract
In our study, we aimed to reveal potential long non-coding RNAs (lncRNA) biomarkers in lung adenocarcinoma (LAD) using lncRNA-mediated competing endogenous RNAs (ceRNAs) network (LMCN). Competing lncRNA-mRNA interactions were identified using the hypergeometric test. Co-expression analysis for the competing lncRNA-mRNA interactions was implemented, and relying on the weight value >0.8, a highly competitive LMCN was further constructed. Degree distribution, betweenness and closeness for LMCN were carried out to analyze the network structure. Functional analyses of mRNAs in LMCN were carried out to further explore the biological functions of lncRNAs. Biclique algorithm was utilized to extract competing modules from the LMCN. Finally, we verified our findings in an independent sample set using qRT-PCR. Based on degrees >60, we identified 4 hubs, including DLEU2, SNHG12, HCP5, and LINC00472. Furthermore, 2 competing modules were identified, and LINC00472 in module 1 functioned as a hub in both LMCN and module. Functional implications of lncRNAs demonstrated that lncRNAs were related to histone modification, negative regulation of cell cycle, neuroactive ligand-receptor interaction, and regulation of actin cytoskeleton. qRT-PCR results demonstrated that lncRNAs LINC00472, and HCP5 were down-regulated in LAD tissues, while the expression level of SNHG12 was up-regulated in LAD tissues. Our study sheds novel light on the roles of lncRNA-related ceRNA network in LAD and facilitates the detection of potential lncRNA biomarkers for LAD diagnosis and treatment. Remarkably, in our study, LINC00472, HCP5, and SNHG12 might be potential biomarkers for LAD management.
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Affiliation(s)
- T-G Zhu
- Department of Pulmonary Disease, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - X Xiao
- Department of Heart Disease, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - Q Wei
- Department of Heart Disease, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - M Yue
- Department of Internal Medicine, Lushuihe Forestry Bureau, Hospital of Jilin Province, Baishan, Jilin Province, China
| | - L-X Zhang
- Department of Pulmonary Disease, The Affiliated Hospital of Changchun University of Chinese Medicine, Changchun, Jilin Province, China
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Carlomagno Y, Chung DEC, Yue M, Castanedes-Casey M, Madden BJ, Dunmore J, Tong J, DeTure M, Dickson DW, Petrucelli L, Cook C. An acetylation-phosphorylation switch that regulates tau aggregation propensity and function. J Biol Chem 2017; 292:15277-15286. [PMID: 28760828 PMCID: PMC5602388 DOI: 10.1074/jbc.m117.794602] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 07/26/2017] [Indexed: 12/26/2022] Open
Abstract
The aberrant accumulation of tau protein is a pathological hallmark of a class of neurodegenerative diseases known as tauopathies, including Alzheimer's disease and related dementias. On the basis of previous observations that tau is a direct substrate of histone deacetylase 6 (HDAC6), we sought to map all HDAC6-responsive sites in tau and determine how acetylation in a site-specific manner affects tau's biophysical properties in vitro. Our findings indicate that several acetylation sites in tau are responsive to HDAC6 and that acetylation on Lys-321 (within a KCGS motif) is both essential for acetylation-mediated inhibition of tau aggregation in vitro and a molecular tactic for preventing phosphorylation on the downstream Ser-324 residue. To determine the functional consequence of this HDAC6-regulated phosphorylation event, we examined tau's ability to promote microtubule assembly and found that phosphorylation of Ser-324 interferes with the normal microtubule-stabilizing function of tau. Tau phosphorylation of Ser-324 (pSer-324) has not previously been evaluated in the context of tauopathy, and here we observed increased deposition of pSer-324–positive tau both in mouse models of tauopathy and in patients with Alzheimer's disease. These findings uncover a novel acetylation–phosphorylation switch at Lys-321/Ser-324 that coordinately regulates tau polymerization and function. Because the disease relevance of this finding is evident, additional studies are needed to examine the role of pSer-324 in tau pathobiology and to determine whether therapeutically modulating this acetylation–phosphorylation switch affects disease progression in vivo.
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Affiliation(s)
- Yari Carlomagno
- From the Department of Neuroscience, Mayo Clinic, Jacksonville, Florida 32224
| | - Dah-Eun Chloe Chung
- From the Department of Neuroscience, Mayo Clinic, Jacksonville, Florida 32224.,the Neurobiology of Disease Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida 32224, and
| | - Mei Yue
- From the Department of Neuroscience, Mayo Clinic, Jacksonville, Florida 32224
| | | | - Benjamin J Madden
- the Medical Genome Facility Proteomics Core, Mayo Clinic, Rochester, Minnesota 55905
| | - Judy Dunmore
- From the Department of Neuroscience, Mayo Clinic, Jacksonville, Florida 32224
| | - Jimei Tong
- From the Department of Neuroscience, Mayo Clinic, Jacksonville, Florida 32224
| | - Michael DeTure
- From the Department of Neuroscience, Mayo Clinic, Jacksonville, Florida 32224
| | - Dennis W Dickson
- From the Department of Neuroscience, Mayo Clinic, Jacksonville, Florida 32224.,the Neurobiology of Disease Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida 32224, and
| | - Leonard Petrucelli
- From the Department of Neuroscience, Mayo Clinic, Jacksonville, Florida 32224, .,the Neurobiology of Disease Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida 32224, and
| | - Casey Cook
- From the Department of Neuroscience, Mayo Clinic, Jacksonville, Florida 32224, .,the Neurobiology of Disease Graduate Program, Mayo Clinic Graduate School of Biomedical Sciences, Jacksonville, Florida 32224, and
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Delenclos M, Faroqi AH, Yue M, Kurti A, Castanedes-Casey M, Rousseau L, Phillips V, Dickson DW, Fryer JD, McLean PJ. Neonatal AAV delivery of alpha-synuclein induces pathology in the adult mouse brain. Acta Neuropathol Commun 2017. [PMID: 28645308 PMCID: PMC5481919 DOI: 10.1186/s40478-017-0455-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Abnormal accumulation of alpha-synuclein (αsyn) is a pathological hallmark of Lewy body related disorders such as Parkinson's disease and Dementia with Lewy body disease. During the past two decades, a myriad of animal models have been developed to mimic pathological features of synucleinopathies by over-expressing human αsyn. Although different strategies have been used, most models have little or no reliable and predictive phenotype. Novel animal models are a valuable tool for understanding neuronal pathology and to facilitate development of new therapeutics for these diseases. Here, we report the development and characterization of a novel model in which mice rapidly express wild-type αsyn via somatic brain transgenesis mediated by adeno-associated virus (AAV). At 1, 3, and 6 months of age following intracerebroventricular (ICV) injection, mice were subjected to a battery of behavioral tests followed by pathological analyses of the brains. Remarkably, significant levels of αsyn expression are detected throughout the brain as early as 1 month old, including olfactory bulb, hippocampus, thalamic regions and midbrain. Immunostaining with a phospho-αsyn (pS129) specific antibody reveals abundant pS129 expression in specific regions. Also, pathologic αsyn is detected using the disease specific antibody 5G4. However, this model did not recapitulate behavioral phenotypes characteristic of rodent models of synucleinopathies. In fact no deficits in motor function or cognition were observed at 3 or 6 months of age. Taken together, these findings show that transduction of neonatal mouse with AAV-αsyn can successfully lead to rapid, whole brain transduction of wild-type human αsyn, but increased levels of wildtype αsyn do not induce behavior changes at an early time point (6 months), despite pathological changes in several neurons populations as early as 1 month.
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Wang T, Liu Z, Zhang Z, Tang S, Yue M, Feng S, Hu M, Xuan L, Chen Y. Evaluation of antitumor activity of survivin short interfering RNA delivered by lipid nanoparticles in colon cancer in vitro and in vivo. Oncol Lett 2017; 14:2001-2008. [PMID: 28781643 PMCID: PMC5530177 DOI: 10.3892/ol.2017.6404] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 03/14/2017] [Indexed: 01/05/2023] Open
Abstract
Survivin has been overexpressed in numerous types of cancer and is associated with a poor clinical outcome. A number of various approaches have been used to counteract survivin in order to inhibit tumor growth or promote cell apoptosis. The present study aimed to evaluate the efficiency and antitumor effect of a survivin-targeted short interfering RNA (siRNA) delivery system using lipid nanoparticles for the treatment of colon cancer. Survivin siRNA (si-survivin) nanoliposomes were prepared and transfected into LoVo cells. The mRNA expression level of survivin was determined by reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and western blot analysis. Cell viability was evaluated by MTT assay. LoVo-bearing nude mice were treated with si-survivin intratumorally or intravenously. Tumor growth in LoVo-bearing mice was monitored and recorded, and tumor samples were obtained for evaluation of survivin expression levels using RT-qPCR, western blotting and immunohischemical staining. The expression level of survivin was significantly reduced by nanoliposomal si-survivin along with cell proliferation inhibition in vitro. Intravenous administration of si-survivin nanoliposomes may significantly inhibit tumor growth with less toxicity compared with doxorubicin hydrochloride treatment in LoVo-bearing mice. Nanoliposomal si-survivin may significantly reduce the expression level of survivin and inhibit cell proliferation of colon cancer cells in vitro and in vivo. si-survivin delivered by lipid nanoparticles may be a potential treatment approach for colon cancer.
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Affiliation(s)
- Tianyou Wang
- Department of Hematology and Oncology, Beijing Children's Hospital, Capital Medicine University, Beijing 100045, P.R. China
| | - Ziqin Liu
- Department of Pediatrics, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Zhaoxia Zhang
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Suoqin Tang
- Department of Pediatrics, Chinese People's Liberation Army General Hospital, Beijing 100853, P.R. China
| | - Mei Yue
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Shunqiao Feng
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Mengze Hu
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Litian Xuan
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Yanfei Chen
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
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Zhang Z, Wang T, Liu Z, Tang S, Yue M, Feng S, Hu M, Xuan L, Chen Y. Small interfering RNA targeting of the survivin gene inhibits human tumor cell growth in vitro. Exp Ther Med 2017; 14:35-42. [PMID: 28672890 PMCID: PMC5488478 DOI: 10.3892/etm.2017.4501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 12/23/2016] [Indexed: 12/03/2022] Open
Abstract
The present study aimed to evaluate the impact of small interfering RNA (siRNA) targeting of the survivin gene in human tumor cells and the effect of decreased survivin expression on the proliferation and apoptosis of tumor cells. Human tumor cell lines (MSA-MB-231, SGC-7901, HeLa, A549, SK-OV-3 and Raji, PC-3) were cultured in vitro and divided into three groups: survivin siRNA-treated, scrambled negative control siRNA-treated and an untreated control group. The level of survivin mRNA and protein expression was subsequently determined by reverse transcription-quantitative polymerase chain reaction and western blot analysis, respectively. Cell proliferation was also examined by an MTT assay following transfection and the apoptotic rate of cells was detected by Hoechst and Annexin V/propidium iodide staining. It was observed that relative to the control group, expression of survivin mRNA and protein in the survivin siRNA-treated group was significantly downregulated. Furthermore, siRNA targeting of survivin lead to the inhibition of tumor cell proliferation, as well as an increase in their apoptotic rate in vitro. These data suggest that survivin may be a potential tumor biomarker and a novel target for the treatment of cancer.
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Affiliation(s)
- Zhaoxia Zhang
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Tianyou Wang
- Department of Hematology and Oncology, Beijing Children's Hospital, Capital Medical University, Beijing 100045, P.R. China
| | - Ziqin Liu
- Department of Pediatrics, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Suoqin Tang
- Department of Pediatrics, People's Liberation Army General Hospital, Beijing 100039, P.R. China
| | - Mei Yue
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Shunqiao Feng
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Mengze Hu
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Litian Xuan
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Yanfei Chen
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Beijing 100020, P.R. China
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Liu Z, Wang T, Zhang Z, Tang S, Feng S, Yue M, Hu M, Xuan L, Chen Y. Survivin downregulation using siRNA nanoliposomes inhibits cell proliferation and promotes the apoptosis of MHCC-97H hepatic cancer cells: An in vitro and in vivo study. Oncol Lett 2017; 13:2723-2730. [PMID: 28454458 PMCID: PMC5403348 DOI: 10.3892/ol.2017.5754] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 11/25/2016] [Indexed: 12/29/2022] Open
Abstract
At present, survivin is one of the most cancer-specific proteins that has been identified. The present study aimed to investigate the antitumor effects of novel survivin small interfering RNA (siRNA) nanoliposomes targeting survivin in human hepatocellular carcinoma MHCC-97H cells and xenograft mouse models. Survivin-targeted siRNA nanoliposomes were prepared and transfected into MHCC-97H cells and MHCC-97H-bearing nude mice. Survivin expression was analyzed using reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and western blotting. Cell viability was analyzed using an MTT assay and apoptosis was evaluated using Hoechst and Annexin V-fluorescein isothiocyanate/propidium iodide staining. Tumor growth in MHCC-97H-bearing mice was monitored following treatment and tumor samples were obtained for survivin expression analysis using RT-qPCR, western blotting and immunohistochemistry staining. Survivin expression levels were significantly downregulated by nanoliposome-mediated survivin siRNA delivery and this was associated with a significant inhibition of cell growth and an increase in the apoptosis of MHCC-97H cells. Downregulation of survivin expression using survivin siRNA nanoliposomes inhibited tumor growth in the MHCC-97H xenograft models without significant treatment-associated toxicity. Therefore, a cationic nanoliposome-based survivin siRNA delivery system was constructed and demonstrated to be efficient for survivin siRNA delivery in in vitro and in vivo studies. These results demonstrate that survivin downregulation was able to significantly attenuate cell proliferation and induce the apoptosis of MHCC-97H cells, as well as inhibit tumor cell growth in MHCC-97H xenograft models, indicating that survivin suppression using siRNA may contribute to the inhibition of tumor development by suppressing cell proliferation and promoting apoptosis.
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Affiliation(s)
- Ziqin Liu
- Department of Pediatrics, Capital Institute of Pediatrics, Chaoyang, Beijing 100020, P.R. China
| | - Tianyou Wang
- Department of Hematology and Oncology, Beijing Children's Hospital, Capital Medical University, Xicheng, Beijing 100045, P.R. China
| | - Zhaoxia Zhang
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Chaoyang, Beijing 100020, P.R. China
| | - Suoqin Tang
- Department of Pediatrics, People's Liberation Army General Hospital, Beijing 100853, P.R. China
| | - Shunqiao Feng
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Chaoyang, Beijing 100020, P.R. China
| | - Mei Yue
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Chaoyang, Beijing 100020, P.R. China
| | - Mengze Hu
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Chaoyang, Beijing 100020, P.R. China
| | - Litian Xuan
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Chaoyang, Beijing 100020, P.R. China
| | - Yanfei Chen
- Department of Hematology and Oncology, Capital Institute of Pediatrics, Chaoyang, Beijing 100020, P.R. China
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Zhuang JJ, Yue M, Zheng YH, Li JP, Dong XY. Long non-coding RNA MVIH acts as a prognostic marker in glioma and its role in cell migration and invasion. Eur Rev Med Pharmacol Sci 2016; 20:4898-4904. [PMID: 27981545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE High expression levels of lncRNA associated with microvascular invasion in HCC (lncRNA MVIH) were found to correlate with several solid tumors. However, little is known concerning the function of MVIH in glioma. The purpose of our study is to explore the role of lncRNA MVIH in clinical glioma samples and cell lines. PATIENTS AND METHODS The expression levels of MVIH were analyzed in glioma surgical resection tissues and cells by RT-PCR. Additionally, the associations of MVIH expression with clinicopathological features were analyzed. Survival and Cox proportional-hazards regression analyses were performed to determine the correlation between MVIH expression levels and prognosis in the patients. The cell proliferation, migration ability, invasion ability were measured successively by CKK-8 assay, transwell and wound healing assay. RESULTS We found that MVIH was significantly upregulated in glioma cell lines and tissues. Furthermore, MVIH expression was positively correlated with KPS and WHO grade. Patients with MVIH high expression tumors had a worse overall survival compared to patients with MVIH high expression tumors. Moreover, Univariate and multivariate Cox regression analysis confirmed that MVIH was an independent risk factor for glioma. Finally, in vitro, we showed that up-regulation of MVIH expression promoted human glioma cells proliferation, invasion and migration, while down-regulation of MVIH expression suppressed human glioma cells proliferation, invasion and migration. CONCLUSIONS Our findings indicated that MVIH expression may serve not only as a prognostic marker but also as a potential therapeutic target in glioma.
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Affiliation(s)
- J-J Zhuang
- Department of Neurology, Weifang People's Hospital, Weifang, Shandong, China.
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Bian J, Jin M, Yue M, Wang M, Zhang H, Gui C. Tryptophan Residue Located at the Middle of Putative Transmembrane Domain 11 Is Critical for the Function of Organic Anion Transporting Polypeptide 2B1. Mol Pharm 2016; 13:3553-3563. [DOI: 10.1021/acs.molpharmaceut.6b00648] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jialin Bian
- Department of Pharmaceutical Analysis, College of Pharmaceutical
Sciences, Soochow University, Suzhou 215123, China
| | - Meng Jin
- Department of Pharmaceutical Analysis, College of Pharmaceutical
Sciences, Soochow University, Suzhou 215123, China
| | - Mei Yue
- Department of Pharmaceutical Analysis, College of Pharmaceutical
Sciences, Soochow University, Suzhou 215123, China
| | - Meiyu Wang
- Department of Pharmaceutical Analysis, College of Pharmaceutical
Sciences, Soochow University, Suzhou 215123, China
| | - Hongjian Zhang
- Department of Pharmaceutical Analysis, College of Pharmaceutical
Sciences, Soochow University, Suzhou 215123, China
| | - Chunshan Gui
- Department of Pharmaceutical Analysis, College of Pharmaceutical
Sciences, Soochow University, Suzhou 215123, China
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Yue M, Liu XJ, Ding Y, Wang XL, Yang HC, Liu YP. [Effect of bufalin on proliferation and apoptosis through ERK/RSK2 pathway in human esophageal carcinoma cell line xenografts in nude mice]. Zhonghua Zhong Liu Za Zhi 2016; 38:325-32. [PMID: 27188603 DOI: 10.3760/cma.j.issn.0253-3766.2016.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the effect of bufalin on proliferation and apoptosis through ERK/RSK2 pathway in esophageal squamous cell carcinoma xenografts in nude mice. METHODS The subcutaneous xenograft model of esophageal cancer ECA109 cells in nude mice was established. The mice were divided into the model group, low-dose bufalin group, medium-dose bufalin group, high-dose bufalin group, PD98059 group and combination group to evaluate the effect of bufalin on the xenografts. The morphology of xenografts was observed by microscopy. The cell apoptosis index of xenografts was detected by TUNEL assay. The expression of ERK and RSK2 mRNA of human ECA109 cell transplantation tumor in nude mice was examined by real-time quantitative PCR. The protein levels of ERK, p-ERK, RSK2, p-RSK2, GSK3β, p-GSK3β, Bad and p-Bad in the xenografts were examined by Western blot and Immunohistochemistry. RESULTS The tumor size of nude mice in the model group, low-dose bufalin group (BL), medium -dose bufalin group (BM), high-dose bufalin group (BH), PD98059 group and combined therapy group (BP) was (1.758±0.181) cm(3,) (1.680±0.150) cm(3,) (1.285±0.134) cm(3,) (0.873±0.095) cm(3,) (0.815±0.108) cm(3) and (0.530±0.104) cm(3,) respectively. Histological examination showed that the xenografts of each group had varying degrees of necrosis, and the most extensive necrosis was observed in the BP group. The TUNEL assay showed that the cell apoptosis index of xenografts in the model, BL, BM, BH, PD98059 and BP groups was (6.0±0.6)%, (11.0±0.7)%, (19.1±0.9)%, (25.1±1.4)%, (20.0±1.2)% and (17.1±0.7)%, respectively, which is highest in the BH group. The real-time quantitative PCR results showed that the ΔCT values of ERK mRNA in the model, BL, BM, BH, PD98059 and BP groups were 0.270±0.084, 0.293±0.081, 0.596±0.224, 0.857±0.183, 0.868±0.187 and 1.313±0.282, respectively. The ΔCT values of RSK2 mRNA in the model, BL, BM, BH, PD98059 and BP groups were 0.340±0.062, 0.337±0.071, 0.642±0.226, 0.915±0.170, 0.923±0.176 and 1.413±0.269, respectively. The relative expression of ERK and RSK2 mRNA was gradually decreased. Western blot and immunohistochemistry results showed that the protein levels of ERK, RSK2 and Bad in each group were not significantly different (P>0.05). The protein levels of p-ERK in the model, BL, BM, BH, PD98059 and BP groups were 0.721±0.094, 0.695±0.095, 0.555±0.080, 0.388±0.052, 0.341±0.060, 0.235± 0.056, respectively. The median immunoreactivity scores of p-ERK in each group were 8, 8, 6, 4, 5 and 3. The protein levels of p-RSK2 in the model, BL, BM, BH, PD98059 and BP groups were 0.613±0.085, 0.612±0.084, 0.427±0.089, 0.305±0.056, 0.258±0.051, 0.158±0.058, respectively. The median immunoreactivity scores of p-RSK in each group were 8, 8, 5, 3, 3 and 1. The protein level of GSK3β in the model, BL, BM, BH, PD98059 and BP groups were increased gradually, while the protein level of p-GSK3β and p-Bad were decreased gradually. CONCLUSIONS Bufalin exerts significant inhibitory effect on the esophageal squamous cell carcinoma xenogragts in nude mice. Bufalin may suppress the growth of xenogragts in nude mice by down-regulating the level of ERK and RSK2 phosphorylation, inhibit the proliferation of xenogragts via inactivating GSK3β and promote apoptosis through down-regulation of p-Bad.
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Affiliation(s)
- M Yue
- Department of Pathology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - X J Liu
- Department of Pathology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Y Ding
- Department of Pathology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - X L Wang
- Department of Pathology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - H C Yang
- Department of Pathology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Y P Liu
- Department of Pathology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050000, China
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Li Y, Liu Y, Tan H, Zhang Y, Yue M. Use of Walnut Shell Powder to Inhibit Expression of Fe(2+)-Oxidizing Genes of Acidithiobacillus Ferrooxidans. Int J Environ Res Public Health 2016; 13:ijerph13050461. [PMID: 27144574 PMCID: PMC4881086 DOI: 10.3390/ijerph13050461] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 04/12/2016] [Accepted: 04/15/2016] [Indexed: 11/16/2022]
Abstract
Acidithiobacillus ferrooxidans is a Gram-negative bacterium that obtains energy by oxidizing Fe(2+) or reduced sulfur compounds. This bacterium contributes to the formation of acid mine drainage (AMD). This study determined whether walnut shell powder inhibits the growth of A. ferrooxidans. First, the effects of walnut shell powder on Fe(2+) oxidization and H⁺ production were evaluated. Second, the chemical constituents of walnut shell were isolated to determine the active ingredient(s). Third, the expression of Fe(2+)-oxidizing genes and rus operon genes was investigated using real-time polymerase chain reaction. Finally, growth curves were plotted, and a bioleaching experiment was performed to confirm the active ingredient(s) in walnut shells. The results indicated that both walnut shell powder and the phenolic fraction exert high inhibitory effects on Fe(2+) oxidation and H⁺ production by A. ferrooxidans cultured in standard 9K medium. The phenolic components exert their inhibitory effects by down-regulating the expression of Fe(2+)-oxidizing genes and rus operon genes, which significantly decreased the growth of A. ferrooxidans. This study revealed walnut shell powder to be a promising substance for controlling AMD.
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Affiliation(s)
- Yuhui Li
- Department of Biological and Environmental Engineering, Hefei University, Hefei 230601, China.
| | - Yehao Liu
- School of Public Health, Anhui Medical University, Hefei 230032, China.
| | - Huifang Tan
- Department of Biological and Environmental Engineering, Hefei University, Hefei 230601, China.
| | - Yifeng Zhang
- Department of Biological and Environmental Engineering, Hefei University, Hefei 230601, China.
| | - Mei Yue
- Department of Biological and Environmental Engineering, Hefei University, Hefei 230601, China.
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50
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Delenclos M, Trendafilova T, Jones DR, Moussaud S, Baine AM, Yue M, Hirst WD, McLean PJ. A Rapid, Semi-Quantitative Assay to Screen for Modulators of Alpha-Synuclein Oligomerization Ex vivo. Front Neurosci 2016; 9:511. [PMID: 26834539 PMCID: PMC4717311 DOI: 10.3389/fnins.2015.00511] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 12/21/2015] [Indexed: 12/13/2022] Open
Abstract
Alpha synuclein (αsyn) aggregates are associated with the pathogenesis of Parkinson's disease and others related disorders. Although modulation of αsyn aggregation is an attractive therapeutic target, new powerful methodologies are desperately needed to facilitate in vivo screening of novel therapeutics. Here, we describe an in vivo rodent model with the unique ability to rapidly track αsyn-αsyn interactions and thus oligomerization using a bioluminescent protein complementation strategy that monitors spatial and temporal αsyn oligomerization ex vivo. We find that αsyn forms oligomers in vivo as early as 1 week after stereotactic AAV injection into rat substantia nigra. Strikingly, although abundant αsyn expression is also detected in striatum at 1 week, no αsyn oligomers are detected at this time point. By 4 weeks, oligomerization of αsyn is detected in both striatum and substantia nigra homogenates. Moreover, in a proof-of-principle experiment, the effect of a previously described Hsp90 inhibitor known to prevent αsyn oligomer formation, demonstrates the utility of this rapid and sensitive animal model to monitor αsyn oligomerization status in the rat brain.
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Affiliation(s)
| | | | - Daryl R Jones
- Department of Neuroscience, Mayo Clinic Jacksonville, FL, USA
| | - Simon Moussaud
- Department of Neuroscience, Mayo Clinic Jacksonville, FL, USA
| | - Ann-Marie Baine
- Department of Neuroscience, Mayo Clinic Jacksonville, FL, USA
| | - Mei Yue
- Department of Neuroscience, Mayo Clinic Jacksonville, FL, USA
| | | | - Pamela J McLean
- Department of Neuroscience, Mayo ClinicJacksonville, FL, USA; Mayo Graduate School, Mayo ClinicJacksonville, FL, USA
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