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Lyons PJ. Inactive metallopeptidase homologs: the secret lives of pseudopeptidases. Front Mol Biosci 2024; 11:1436917. [PMID: 39050735 PMCID: PMC11266112 DOI: 10.3389/fmolb.2024.1436917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Accepted: 06/25/2024] [Indexed: 07/27/2024] Open
Abstract
Inactive enzyme homologs, or pseudoenzymes, are proteins, found within most enzyme families, that are incapable of performing catalysis. Rather than catalysis, they are involved in protein-protein interactions, sometimes regulating the activity of their active enzyme cousins, or scaffolding protein complexes. Pseudoenzymes found within metallopeptidase families likewise perform these functions. Pseudoenzymes within the M14 carboxypeptidase family interact with collagens within the extracellular space, while pseudopeptidase members of the M12 "a disintegrin and metalloprotease" (ADAM) family either discard their pseudopeptidase domains as unnecessary for their roles in sperm maturation or utilize surface loops to enable assembly of key complexes at neuronal synapses. Other metallopeptidase families contain pseudopeptidases involved in protein synthesis at the ribosome and protein import into organelles, sometimes using their pseudo-active sites for these interactions. Although the functions of these pseudopeptidases have been challenging to study, ongoing work is teasing out the secret lives of these proteins.
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Affiliation(s)
- Peter J. Lyons
- Department of Biology, Andrews University, Berrien Springs, MI, United States
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2
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Yamamoto T, Gi M, Yamashita S, Suzuki S, Fujioka M, Vachiraarunwong A, Guo R, Qiu G, Kakehashi A, Kato M, Uchida J, Wanibuchi H. DNA Methylation Aberrations in Dimethylarsinic Acid-Induced Bladder Carcinogenesis. Cancers (Basel) 2023; 15:5274. [PMID: 37958445 PMCID: PMC10648661 DOI: 10.3390/cancers15215274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/28/2023] [Accepted: 11/01/2023] [Indexed: 11/15/2023] Open
Abstract
Arsenic is a known human urinary bladder carcinogen. While arsenic is known to cause aberrant DNA methylation, the mechanism of arsenic-triggered bladder carcinogenesis is not fully understood. The goal of this study was to identify aberrant DNA methylation in rat bladder urothelial carcinoma (UC) induced by dimethylarsinic acid (DMAV), a major organic metabolite of arsenic. We performed genome-wide DNA methylation and microarray gene expression analyses of DMAV-induced rat UCs and the urothelium of rats treated for 4 weeks with DMAV. We identified 40 genes that were both hypermethylated and downregulated in DMAV-induced rat UCs. Notably, four genes (CPXM1, OPCML, TBX20, and KCND3) also showed reduced expression in the bladder urothelium after 4 weeks of exposure to DMAV. We also found that CPXM1 is aberrantly methylated and downregulated in human bladder cancers and human bladder cancer cells. Genes with aberrant DNA methylation and downregulated expression in DMAV-exposed bladder urothelium and in DMAV-induced UCs in rats, suggest that these alterations occurred in the early stages of arsenic-induced bladder carcinogenesis. Further study to evaluate the functions of these genes will advance our understanding of the role of aberrant DNA methylation in arsenic bladder carcinogenesis, and will also facilitate the identification of new therapeutic targets for arsenic-related bladder cancers.
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Affiliation(s)
- Tomoki Yamamoto
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan; (T.Y.)
- Department of Molecular Urology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan
| | - Min Gi
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan; (T.Y.)
- Department of Environmental Risk Assessment, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan
| | - Satoshi Yamashita
- Department of Life Engineering, Faculty of Engineering, Maebashi Institute of Technology, 460-1 Kamisadori, Maebashi 371-0816, Gunma, Japan
| | - Shugo Suzuki
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan; (T.Y.)
| | - Masaki Fujioka
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan; (T.Y.)
| | - Arpamas Vachiraarunwong
- Department of Environmental Risk Assessment, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan
| | - Runjie Guo
- Department of Environmental Risk Assessment, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan
| | - Guiyu Qiu
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan; (T.Y.)
| | - Anna Kakehashi
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan; (T.Y.)
| | - Minoru Kato
- Department of Molecular Urology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan
| | - Junji Uchida
- Department of Molecular Urology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan
| | - Hideki Wanibuchi
- Department of Molecular Pathology, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Osaka, Japan; (T.Y.)
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Shen X, Luo K, Yuan J, Gao J, Cui B, Yu Z, Lu Z. Hepatic DDAH1 mitigates hepatic steatosis and insulin resistance in obese mice: Involvement of reduced S100A11 expression. Acta Pharm Sin B 2023; 13:3352-3364. [PMID: 37655336 PMCID: PMC10465955 DOI: 10.1016/j.apsb.2023.05.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 03/16/2023] [Accepted: 04/03/2023] [Indexed: 09/02/2023] Open
Abstract
Dimethylarginine dimethylaminohydrolase 1 (DDAH1) is an important regulator of plasma asymmetric dimethylarginine (ADMA) levels, which are associated with insulin resistance in patients with nonalcoholic fatty liver disease (NAFLD). To elucidate the role of hepatic DDAH1 in the pathogenesis of NAFLD, we used hepatocyte-specific Ddah1-knockout mice (Ddah1HKO) to examine the progress of high-fat diet (HFD)-induced NAFLD. Compared to diet-matched flox/flox littermates (Ddah1f/f), Ddah1HKO mice exhibited higher serum ADMA levels. After HFD feeding for 16 weeks, Ddah1HKO mice developed more severe liver steatosis and worse insulin resistance than Ddah1f/f mice. On the contrary, overexpression of DDAH1 attenuated the NAFLD-like phenotype in HFD-fed mice and ob/ob mice. RNA-seq analysis showed that DDAH1 affects NF-κB signaling, lipid metabolic processes, and immune system processes in fatty livers. Furthermore, DDAH1 reduces S100 calcium-binding protein A11 (S100A11) possibly via NF-κB, JNK and oxidative stress-dependent manner in fatty livers. Knockdown of hepatic S100a11 by an AAV8-shS100a11 vector alleviated hepatic steatosis and insulin resistance in HFD-fed Ddah1HKO mice. In summary, our results suggested that the liver DDAH1/S100A11 axis has a marked effect on liver lipid metabolism in obese mice. Strategies to increase liver DDAH1 activity or decrease S100A11 expression could be a valuable approach for NAFLD therapy.
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Affiliation(s)
- Xiyue Shen
- College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
- Institute of Respiratory Medicine, Tongji University School of Medicine, Shanghai 200433, China
| | - Kai Luo
- College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Juntao Yuan
- College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Junling Gao
- College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bingqing Cui
- College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhuoran Yu
- College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhongbing Lu
- College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
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4
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Pervaz S, Ullah A, Adu-Gyamfi EA, Lamptey J, Sah SK, Wang MJ, Wang YX. Role of CPXM1 in Impaired Glucose Metabolism and Ovarian Dysfunction in Polycystic Ovary Syndrome. Reprod Sci 2023; 30:526-543. [PMID: 35697923 DOI: 10.1007/s43032-022-00987-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 05/20/2022] [Indexed: 11/24/2022]
Abstract
Polycystic ovary syndrome (PCOS), a common female endocrinopathy associated with both reproductive and metabolic disorders, has an unclear etiology and unsatisfactory management methods. Carboxypeptidase X, M14 family member 1 (CPXM1) is a protein involved in follicular atresia, insulin production, and adipose tissue production, though its role in PCOS is not fully understood. We used a 60% high-fat diet (HFD) plus dehydroepiandrosterone (DHEA)-induced PCOS mouse model to determine the role of CPXM1 in abnormal glucose metabolism and ovarian dysfunction in PCOS. We found that serum CPXM1 concentrations were higher in PCOS mice and positively correlated with increased levels of serum testosterone and insulin. In both ovarian and adipose tissues of PCOS mice, CPXM1 mRNA and protein levels were significantly increased but GLUT4 levels were significantly decreased. Immunohistochemistry (IHC) staining of the ovary showed increased CPXM1 expression in PCOS. In addition, the protein expression of phosphorylated protein kinase B (p-Akt) was also significantly decreased in PCOS mice. Furthermore, mRNA levels of inflammatory markers such as TNF-α, IL-6, IFN-α, and IFN-γ were increased in ovarian and adipose tissues of PCOS mice. However, IRS-1, IRS-2, and INSR levels were significantly decreased. Our results indicated for the first time that abnormally high expression of CPXM1, increased adiposity, impaired glucose tolerance, and chronic low-grade inflammation may act together in a vicious cycle in the pathophysiology of PCOS. Our research suggests the possibility of CPXM1 as a potential therapeutic target for the treatment of PCOS.
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Affiliation(s)
- Sadaf Pervaz
- Joint International Research Laboratory of Reproduction and Development, Chongqing Medical University, YiXueYuanLu Street No.1, YuZhong District, Chongqing, People's Republic of China
| | - Amin Ullah
- Joint International Research Laboratory of Reproduction and Development, Chongqing Medical University, YiXueYuanLu Street No.1, YuZhong District, Chongqing, People's Republic of China
| | - Enoch Appiah Adu-Gyamfi
- Joint International Research Laboratory of Reproduction and Development, Chongqing Medical University, YiXueYuanLu Street No.1, YuZhong District, Chongqing, People's Republic of China
| | - Jones Lamptey
- Joint International Research Laboratory of Reproduction and Development, Chongqing Medical University, YiXueYuanLu Street No.1, YuZhong District, Chongqing, People's Republic of China.,Department of Genetics, School of Basic Medicine, Chongqing Medical University, Chongqing, People's Republic of China
| | - Sanjay Kumar Sah
- Joint International Research Laboratory of Reproduction and Development, Chongqing Medical University, YiXueYuanLu Street No.1, YuZhong District, Chongqing, People's Republic of China
| | - Mei-Jiao Wang
- Joint International Research Laboratory of Reproduction and Development, Chongqing Medical University, YiXueYuanLu Street No.1, YuZhong District, Chongqing, People's Republic of China. .,Department of Physiology, School of Basic Medicine, Chongqing Medical University, Chongqing, People's Republic of China.
| | - Ying-Xiong Wang
- Joint International Research Laboratory of Reproduction and Development, Chongqing Medical University, YiXueYuanLu Street No.1, YuZhong District, Chongqing, People's Republic of China. .,Department of Genetics, School of Basic Medicine, Chongqing Medical University, Chongqing, People's Republic of China.
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Ramos Z, Garrick DJ, Blair HT, Vera B, Ciappesoni G, Kenyon PR. Genomic Regions Associated with Wool, Growth and Reproduction Traits in Uruguayan Merino Sheep. Genes (Basel) 2023; 14:167. [PMID: 36672908 PMCID: PMC9858812 DOI: 10.3390/genes14010167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 12/29/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
The aim of this study was to identify genomic regions and genes associated with the fiber diameter (FD), clean fleece weight (CFW), live weight (LW), body condition score (BCS), pregnancy rate (PR) and lambing potential (LP) of Uruguayan Merino sheep. Phenotypic records of approximately 2000 mixed-age ewes were obtained from a Merino nucleus flock. Genome-wide association studies were performed utilizing single-step Bayesian analysis. For wool traits, a total of 35 genomic windows surpassed the significance threshold (PVE ≥ 0.25%). The proportion of the total additive genetic variance explained by those windows was 4.85 and 9.06% for FD and CFW, respectively. There were 42 windows significantly associated with LWM, which collectively explained 43.2% of the additive genetic variance. For BCS, 22 relevant windows accounted for more than 40% of the additive genetic variance, whereas for the reproduction traits, 53 genomic windows (24 and 29 for PR and LP, respectively) reached the suggestive threshold of 0.25% of the PVE. Within the top 10 windows for each trait, we identified several genes showing potential associations with the wool (e.g., IGF-1, TGFB2R, PRKCA), live weight (e.g., CAST, LAP3, MED28, HERC6), body condition score (e.g., CDH10, TMC2, SIRPA, CPXM1) or reproduction traits (e.g., ADCY1, LEPR, GHR, LPAR2) of the mixed-age ewes.
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Affiliation(s)
- Zully Ramos
- School of Agriculture and Environment, Massey University, Palmerston North 4410, New Zealand
| | - Dorian J. Garrick
- School of Agriculture and Environment, Massey University, Palmerston North 4410, New Zealand
| | - Hugh T. Blair
- School of Agriculture and Environment, Massey University, Palmerston North 4410, New Zealand
| | - Brenda Vera
- National Research Program on Meat and Wool Production, Instituto Nacional de Investigación Agropecuaria, INIA Las Brujas, Ruta 48 Km 10, Canelones 90100, Uruguay
| | - Gabriel Ciappesoni
- National Research Program on Meat and Wool Production, Instituto Nacional de Investigación Agropecuaria, INIA Las Brujas, Ruta 48 Km 10, Canelones 90100, Uruguay
| | - Paul R. Kenyon
- School of Agriculture and Environment, Massey University, Palmerston North 4410, New Zealand
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6
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Qin Q, Wang T, Xu Z, Liu S, Zhang H, Du Z, Wang J, Wang Y, Wang Z, Yuan S, Wu J, He W, Wang C, Yan X, Wang Y, Jiang X. Ectoderm-derived frontal bone mesenchymal stem cells promote traumatic brain injury recovery by alleviating neuroinflammation and glutamate excitotoxicity partially via FGF1. Stem Cell Res Ther 2022; 13:341. [PMID: 35883153 PMCID: PMC9327213 DOI: 10.1186/s13287-022-03032-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 07/04/2022] [Indexed: 11/16/2022] Open
Abstract
Background Traumatic brain injury (TBI) leads to cell and tissue impairment, as well as functional deficits. Stem cells promote structural and functional recovery and thus are considered as a promising therapy for various nerve injuries. Here, we aimed to investigate the role of ectoderm-derived frontal bone mesenchymal stem cells (FbMSCs) in promoting cerebral repair and functional recovery in a murine TBI model. Methods A murine TBI model was established by injuring C57BL/6 N mice with moderate-controlled cortical impact to evaluate the extent of brain damage and behavioral deficits. Ectoderm-derived FbMSCs were isolated from the frontal bone and their characteristics were assessed using multiple differentiation assays, flow cytometry and microarray analysis. Brain repairment and functional recovery were analyzed at different days post-injury with or without FbMSC application. Behavioral tests were performed to assess learning and memory improvements. RNA sequencing analysis, immunofluorescence staining, and quantitative reverse-transcription polymerase chain reaction (qRT-PCR) were used to examine inflammation reaction and neural regeneration. In vitro co-culture analysis and quantification of glutamate transportation were carried out to explore the possible mechanism of neurogenesis and functional recovery promoted by FbMSCs. Results Ectoderm-derived FbMSCs showed fibroblast like morphology and osteogenic differentiation capacity. FbMSCs were CD105, CD29 positive and CD45, CD31 negative. Different from mesoderm-derived MSCs, FbMSCs expressed the ectoderm-specific transcription factor Tfap2β. TBI mice showed impaired learning and memory deficits. Microglia and astrocyte activation, as well as neural damage, were significantly increased post-injury. FbMSC application ameliorated the behavioral deficits of TBI mice and promoted neural regeneration. RNA sequencing analysis showed that signal pathways related to inflammation decreased, whereas those related to neural activation increased. Immunofluorescence staining and qRT-PCR data revealed that microglial activation and astrocyte polarization to the A1 phenotype were suppressed by FbMSC application. In addition, FGF1 secreted from FbMSCs enhanced glutamate transportation by astrocytes and alleviated the cytotoxic effect of excessive glutamate on neurons. Conclusions Ectoderm-derived FbMSC application significantly alleviated neuroinflammation, brain injury, and excitatory toxicity to neurons, improved cognition and behavioral deficits in TBI mice. Therefore, ectoderm-derived FbMSCs could be ideal therapeutic candidates for TBI which mostly affect cells from the same embryonic origins as FbMSCs. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-022-03032-6.
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Affiliation(s)
- Qiaozhen Qin
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China.,Faculty of Environmental and Life Sciences, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Ting Wang
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Zhenhua Xu
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Shuirong Liu
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Heyang Zhang
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Zhangzhen Du
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Jianing Wang
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Yadi Wang
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Zhenning Wang
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Shanshan Yuan
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Jiamei Wu
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Wenyan He
- China National Clinical Research Center for Neurological Diseases, Jing-Jin Center for Neuroinflammation, Beijing Tiantan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Changzhen Wang
- Beijing Institute of Radiation Medicine, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China
| | - Xinlong Yan
- Faculty of Environmental and Life Sciences, Beijing University of Technology, Beijing, 100124, People's Republic of China.
| | - Yan Wang
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China. .,Anhui Medical University, Hefei, 230032, Anhui, People's Republic of China.
| | - Xiaoxia Jiang
- Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Haidian District, Beijing, 100850, People's Republic of China. .,Anhui Medical University, Hefei, 230032, Anhui, People's Republic of China.
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7
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Thalamuthu A, Mills NT, Berger K, Minnerup H, Grotegerd D, Dannlowski U, Meinert S, Opel N, Repple J, Gruber M, Nenadić I, Stein F, Brosch K, Meller T, Pfarr JK, Forstner AJ, Hoffmann P, Nöthen MM, Witt S, Rietschel M, Kircher T, Adams M, McIntosh AM, Porteous DJ, Deary IJ, Hayward C, Campbell A, Grabe HJ, Teumer A, Homuth G, van der Auwera-Palitschka S, Schubert KO, Baune BT. Genome-wide interaction study with major depression identifies novel variants associated with cognitive function. Mol Psychiatry 2022; 27:1111-1119. [PMID: 34782712 PMCID: PMC7612684 DOI: 10.1038/s41380-021-01379-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 10/08/2021] [Accepted: 10/26/2021] [Indexed: 12/13/2022]
Abstract
Major Depressive Disorder (MDD) often is associated with significant cognitive dysfunction. We conducted a meta-analysis of genome-wide interaction of MDD and cognitive function using data from four large European cohorts in a total of 3510 MDD cases and 6057 controls. In addition, we conducted analyses using polygenic risk scores (PRS) based on data from the Psychiatric Genomics Consortium (PGC) on the traits of MDD, Bipolar disorder (BD), Schizophrenia (SCZ), and mood instability (MIN). Functional exploration contained gene expression analyses and Ingenuity Pathway Analysis (IPA®). We identified a set of significantly interacting single nucleotide polymorphisms (SNPs) between MDD and the genome-wide association study (GWAS) of cognitive domains of executive function, processing speed, and global cognition. Several of these SNPs are located in genes expressed in brain, with important roles such as neuronal development (REST), oligodendrocyte maturation (TNFRSF21), and myelination (ARFGEF1). IPA® identified a set of core genes from our dataset that mapped to a wide range of canonical pathways and biological functions (MPO, FOXO1, PDE3A, TSLP, NLRP9, ADAMTS5, ROBO1, REST). Furthermore, IPA® identified upstream regulator molecules and causal networks impacting on the expression of dataset genes, providing a genetic basis for further clinical exploration (vitamin D receptor, beta-estradiol, tadalafil). PRS of MIN and meta-PRS of MDD, MIN and SCZ were significantly associated with all cognitive domains. Our results suggest several genes involved in physiological processes for the development and maintenance of cognition in MDD, as well as potential novel therapeutic agents that could be explored in patients with MDD associated cognitive dysfunction.
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Affiliation(s)
- Anbupalam Thalamuthu
- Centre for Healthy Brain Ageing (CHeBA), School of Psychiatry, University of New South Wales, Sydney, NSW, Australia
| | - Natalie T Mills
- Discipline of Psychiatry, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Klaus Berger
- Institute of Epidemiology and Social Medicine, University of Münster, Münster, Germany
| | - Heike Minnerup
- Institute of Epidemiology and Social Medicine, University of Münster, Münster, Germany
| | - Dominik Grotegerd
- Institute for Translational Psychiatry, University of Münster, Münster, Germany
| | - Udo Dannlowski
- Institute for Translational Psychiatry, University of Münster, Münster, Germany
| | - Susanne Meinert
- Institute for Translational Psychiatry, University of Münster, Münster, Germany
- Institute for Translational Neuroscience, University of Münster, Münster, Germany
| | - Nils Opel
- Institute for Translational Psychiatry, University of Münster, Münster, Germany
| | - Jonathan Repple
- Institute for Translational Psychiatry, University of Münster, Münster, Germany
| | - Marius Gruber
- Institute for Translational Psychiatry, University of Münster, Münster, Germany
| | - Igor Nenadić
- Department of Psychiatry and Psychotherapy, Philipps-Universität Marburg - UKGM Marburg, Marburg, Germany
| | - Frederike Stein
- Department of Psychiatry and Psychotherapy, Philipps-Universität Marburg - UKGM Marburg, Marburg, Germany
| | - Katharina Brosch
- Department of Psychiatry and Psychotherapy, Philipps-Universität Marburg - UKGM Marburg, Marburg, Germany
| | - Tina Meller
- Department of Psychiatry and Psychotherapy, Philipps-Universität Marburg - UKGM Marburg, Marburg, Germany
| | - Julia-Katharina Pfarr
- Department of Psychiatry and Psychotherapy, Philipps-Universität Marburg - UKGM Marburg, Marburg, Germany
| | - Andreas J Forstner
- Institute of Human Genetics, University of Bonn, School of Medicine & University Hospital Bonn, Bonn, Germany
- Institute of Neuroscience and Medicine (INM-1), Research Center Jülich, Jülich, Germany
- Centre for Human Genetics, University of Marburg, Marburg, Germany
| | - Per Hoffmann
- Institute of Human Genetics, University of Bonn, School of Medicine & University Hospital Bonn, Bonn, Germany
| | - Markus M Nöthen
- Institute of Human Genetics, University of Bonn, School of Medicine & University Hospital Bonn, Bonn, Germany
| | - Stephanie Witt
- Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Faculty of Medicine Mannheim, University of Heidelberg, Mannheim, Germany
| | - Marcella Rietschel
- Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Faculty of Medicine Mannheim, University of Heidelberg, Mannheim, Germany
| | - Tilo Kircher
- Department of Psychiatry and Psychotherapy, Philipps-Universität Marburg - UKGM Marburg, Marburg, Germany
| | - Mark Adams
- Division of Psychiatry, University of Edinburgh, Edinburgh, UK
| | | | - David J Porteous
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Ian J Deary
- Department of Psychology, University of Edinburgh, Edinburgh, EH8 9JZ, UK
| | - Caroline Hayward
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Archie Campbell
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Hans Jörgen Grabe
- Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany
- German Center for Neurodegenerative Diseases (DZNE), Site Rostock/Greifswald, Greifswald, Germany
| | - Alexander Teumer
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Georg Homuth
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Sandra van der Auwera-Palitschka
- Department of Psychiatry and Psychotherapy, University Medicine Greifswald, Greifswald, Germany
- German Center for Neurodegenerative Diseases (DZNE), Site Rostock/Greifswald, Greifswald, Germany
| | - K Oliver Schubert
- Discipline of Psychiatry, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
- Northern Adelaide Mental Health Service, Salisbury, SA, Australia
| | - Bernhard T Baune
- Discipline of Psychiatry, Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia.
- Department of Psychiatry and Psychotherapy, University Hospital Münster, University of Münster, Münster, Germany.
- Department of Psychiatry, Melbourne Medical School, The University of Melbourne, Melbourne, VIC, Australia.
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia.
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Grabowski K, Herlan L, Witten A, Qadri F, Eisenreich A, Lindner D, Schädlich M, Schulz A, Subrova J, Mhatre KN, Primessnig U, Plehm R, van Linthout S, Escher F, Bader M, Stoll M, Westermann D, Heinzel FR, Kreutz R. Cpxm2 as a novel candidate for cardiac hypertrophy and failure in hypertension. Hypertens Res 2022; 45:292-307. [PMID: 34916661 PMCID: PMC8766285 DOI: 10.1038/s41440-021-00826-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 10/08/2021] [Accepted: 10/29/2021] [Indexed: 12/18/2022]
Abstract
Treatment of hypertension-mediated cardiac damage with left ventricular (LV) hypertrophy (LVH) and heart failure remains challenging. To identify novel targets, we performed comparative transcriptome analysis between genetic models derived from stroke-prone spontaneously hypertensive rats (SHRSP). Here, we identified carboxypeptidase X 2 (Cpxm2) as a genetic locus affecting LV mass. Analysis of isolated rat cardiomyocytes and cardiofibroblasts indicated Cpxm2 expression and intrinsic upregulation in genetic hypertension. Immunostaining indicated that CPXM2 associates with the t-tubule network of cardiomyocytes. The functional role of Cpxm2 was further investigated in Cpxm2-deficient (KO) and wild-type (WT) mice exposed to deoxycorticosterone acetate (DOCA). WT and KO animals developed severe and similar systolic hypertension in response to DOCA. WT mice developed severe LV damage, including increases in LV masses and diameters, impairment of LV systolic and diastolic function and reduced ejection fraction. These changes were significantly ameliorated or even normalized (i.e., ejection fraction) in KO-DOCA animals. LV transcriptome analysis showed a molecular cardiac hypertrophy/remodeling signature in WT but not KO mice with significant upregulation of 1234 transcripts, including Cpxm2, in response to DOCA. Analysis of endomyocardial biopsies from patients with cardiac hypertrophy indicated significant upregulation of CPXM2 expression. These data support further translational investigation of CPXM2.
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Affiliation(s)
- Katja Grabowski
- grid.7468.d0000 0001 2248 7639Charité—Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Institut für Klinische Pharmakologie und Toxikologie, 10178 Berlin, Germany
| | - Laura Herlan
- grid.7468.d0000 0001 2248 7639Charité—Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Institut für Klinische Pharmakologie und Toxikologie, 10178 Berlin, Germany
| | - Anika Witten
- grid.16149.3b0000 0004 0551 4246Department of Genetic Epidemiology, Institute of Human Genetics, University Hospital Münster, Münster, Germany
| | - Fatimunnisa Qadri
- grid.419491.00000 0001 1014 0849Max-Delbrück Center for Molecular Medicine (MDC), Berlin-Buch, Berlin, Germany
| | - Andreas Eisenreich
- grid.7468.d0000 0001 2248 7639Charité—Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Institut für Klinische Pharmakologie und Toxikologie, 10178 Berlin, Germany
| | - Diana Lindner
- grid.452396.f0000 0004 5937 5237German Center for Cardiovascular Research (DZHK), Partner site Hamburg/Kiel/Lübeck, Hamburg, Germany ,grid.13648.380000 0001 2180 3484Clinic for Cardiology, University Heart and Vascular Center Hamburg, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Martin Schädlich
- grid.16149.3b0000 0004 0551 4246Department of Genetic Epidemiology, Institute of Human Genetics, University Hospital Münster, Münster, Germany
| | - Angela Schulz
- grid.7468.d0000 0001 2248 7639Charité—Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Institut für Klinische Pharmakologie und Toxikologie, 10178 Berlin, Germany
| | - Jana Subrova
- grid.7468.d0000 0001 2248 7639Charité—Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Institut für Klinische Pharmakologie und Toxikologie, 10178 Berlin, Germany
| | - Ketaki Nitin Mhatre
- grid.7468.d0000 0001 2248 7639Charité—Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Department of Cardiology, Campus Virchow Klinikum, 10178 Berlin, Germany
| | - Uwe Primessnig
- grid.7468.d0000 0001 2248 7639Charité—Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Department of Cardiology, Campus Virchow Klinikum, 10178 Berlin, Germany ,grid.452396.f0000 0004 5937 5237German Center for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany
| | - Ralph Plehm
- grid.419491.00000 0001 1014 0849Max-Delbrück Center for Molecular Medicine (MDC), Berlin-Buch, Berlin, Germany
| | - Sophie van Linthout
- grid.452396.f0000 0004 5937 5237German Center for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany ,grid.6363.00000 0001 2218 4662Charité—Universitätsmedizin Berlin, BCRT—Berlin Institute of Health Center for Regenerative Therapies, Berlin, Germany
| | - Felicitas Escher
- grid.7468.d0000 0001 2248 7639Charité—Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Department of Cardiology, Campus Virchow Klinikum, 10178 Berlin, Germany ,grid.452396.f0000 0004 5937 5237German Center for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany ,grid.486773.9Institute of Cardiac Diagnostics and Therapy, IKDT GmbH, Berlin, Germany
| | - Michael Bader
- grid.419491.00000 0001 1014 0849Max-Delbrück Center for Molecular Medicine (MDC), Berlin-Buch, Berlin, Germany ,grid.452396.f0000 0004 5937 5237German Center for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany ,grid.7468.d0000 0001 2248 7639Charité—Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), 10178 Berlin, Germany ,grid.4562.50000 0001 0057 2672University of Lübeck, Institute for Biology, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Monika Stoll
- grid.16149.3b0000 0004 0551 4246Department of Genetic Epidemiology, Institute of Human Genetics, University Hospital Münster, Münster, Germany ,grid.5012.60000 0001 0481 6099Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Dirk Westermann
- grid.452396.f0000 0004 5937 5237German Center for Cardiovascular Research (DZHK), Partner site Hamburg/Kiel/Lübeck, Hamburg, Germany ,grid.13648.380000 0001 2180 3484Clinic for Cardiology, University Heart and Vascular Center Hamburg, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Frank R. Heinzel
- grid.7468.d0000 0001 2248 7639Charité—Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Department of Cardiology, Campus Virchow Klinikum, 10178 Berlin, Germany ,grid.452396.f0000 0004 5937 5237German Center for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany
| | - Reinhold Kreutz
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Institut für Klinische Pharmakologie und Toxikologie, 10178, Berlin, Germany.
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9
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Mining for encrypted peptide antibiotics in the human proteome. Nat Biomed Eng 2021; 6:67-75. [PMID: 34737399 DOI: 10.1038/s41551-021-00801-1] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 08/25/2021] [Indexed: 12/30/2022]
Abstract
The emergence of drug-resistant bacteria calls for the discovery of new antibiotics. Yet, for decades, traditional discovery strategies have not yielded new classes of antimicrobial. Here, by mining the human proteome via an algorithm that relies on the sequence length, net charge, average hydrophobicity and other physicochemical properties of antimicrobial peptides, we report the identification of 2,603 encrypted peptide antibiotics that are encoded in proteins with biological function unrelated to the immune system. We show that the encrypted peptides kill pathogenic bacteria by targeting their membrane, modulate gut and skin commensals, do not readily select for bacterial resistance, and possess anti-infective activity in skin abscess and thigh infection mouse models. We also show, in vitro and in the two mouse models of infection, that encrypted antibiotic peptides from the same biogeographical area display synergistic antimicrobial activity. Our algorithmic strategy allows for the rapid mining of proteomic data and opens up new routes for the discovery of candidate antibiotics.
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10
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A 4-gene leukemic stem cell score can independently predict the prognosis of myelodysplastic syndrome patients. Blood Adv 2021; 4:644-654. [PMID: 32078680 DOI: 10.1182/bloodadvances.2019001185] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/24/2020] [Indexed: 02/07/2023] Open
Abstract
Myelodysplastic syndrome (MDS) comprised a heterogeneous group of diseases. The prognosis of patients varies even in the same risk groups. Searching for novel prognostic markers is warranted. Leukemic stem cells (LSCs) are responsible for chemoresistance and relapse in leukemia. Recently, expressions of 17 genes related to stemness of LSCs were found to be associated with prognosis in acute myeloid leukemia patients. However, the clinical impact of LSC genes expressions in MDS, a disorder arising from hematopoietic stem cells, remains unclear. We analyzed expression profile of the 17 stemness-related genes in primary MDS patients and identified expression of 4 genes (LAPTM4B, NGFRAP1, EMP1, and CPXM1) were significantly correlated with overall survival (OS). We constructed an LSC4 scoring system based on the weighted sums of the expression of 4 genes and explored its clinical implications in MDS patients. Higher LSC4 scores were associated with higher revised International Prognostic Scoring System (IPSS-R) scores, complex cytogenetics, and mutations in RUNX1, ASXL1, and TP53. High-score patients had significantly shorter OS and leukemia-free survival (LFS), which was also confirmed in 2 independent validation cohorts. Subgroup analysis revealed the prognostic significance of LSC4 scores for OS remained valid across IPSS-R lower- and higher-risk groups. Furthermore, higher LSC4 score was an independent adverse risk factor for OS and LFS in multivariate analysis. In summary, LSC4 score can independently predict prognosis in MDS patients irrespective of IPSS-R risks and may be used to guide the treatment of MDS patients, especially lower-risk group in whom usually only supportive treatment is given.
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11
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Britt JL, Noorai RE, Duckett SK. Differentially expressed genes in cotyledon of ewes fed mycotoxins. BMC Genomics 2020; 21:680. [PMID: 32998709 PMCID: PMC7528493 DOI: 10.1186/s12864-020-07074-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 09/14/2020] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Ergot alkaloids (E+) are mycotoxins produced by the endophytic fungus, Epichloë coenophiala, in tall fescue that are associated with ergotism in animals. Exposure to ergot alkaloids during gestation reduces fetal weight and placental mass in sheep. These reductions are related to vasoconstrictive effects of ergot alkaloids and potential alterations in nutrient transport to the fetus. Cotyledon samples were obtained from eight ewes that were fed E+ (n = 4; E+/E+) or E- (endophyte-free without ergot alkaloids; n = 4; E-/E-) seed during both mid (d 35 to 85) and late (d 85-133) gestation to assess differentially expressed genes associated with ergot alkaloid induced reductions in placental mass and fetal weight, and discover potential adaptive mechanisms to alter nutrient supply to fetus. RESULTS Ewes fed E+/E+ fescue seed during both mid and late gestation had 20% reduction in fetal body weight and 33% reduction in cotyledon mass compared to controls (E-/E-). Over 13,000 genes were identified with 110 upregulated and 33 downregulated. Four genes had a |log2FC| > 5 for ewes consuming E+/E+ treatment compared to controls: LECT2, SLC22A9, APOC3, and MBL2. REViGO revealed clusters of upregulated genes associated glucose, carbohydrates, lipid, protein, macromolecular and cellular metabolism, regulation of wound healing and response to starvation. For downregulated genes, no clusters were present, but all enriched GO terms were associated with anion and monocarboxylic acid transport. The complement and coagulation cascade and the peroxisome proliferator-activated receptor signaling pathway were found to be enriched for ewes consuming E+/E+ treatment. CONCLUSIONS Consumption of ergot alkaloids during gestation altered the cotyledonary transcriptome specifically related to macronutrient metabolism, wound healing and starvation. These results show that ergot alkaloid exposure upregulates genes involved in nutrient metabolism to supply the fetus with additional substrates in attempts to rescue fetal growth.
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Affiliation(s)
- J L Britt
- Department of Animal and Veterinary Sciences, Clemson University, Clemson, SC, 29634, USA
| | - R E Noorai
- Clemson University Genomics and Bioinformatics Facility, Clemson University, Clemson, SC, 29634, USA
| | - S K Duckett
- Department of Animal and Veterinary Sciences, Clemson University, Clemson, SC, 29634, USA.
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12
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Affiliation(s)
- Saverio Cinti
- Professor of Human Anatomy, Director, Center of Obesity, University of Ancona (Politecnica delle Marche), Ancona, Italy
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13
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Kumar A, Bandapalli OR, Paramasivam N, Giangiobbe S, Diquigiovanni C, Bonora E, Eils R, Schlesner M, Hemminki K, Försti A. Familial Cancer Variant Prioritization Pipeline version 2 (FCVPPv2) applied to a papillary thyroid cancer family. Sci Rep 2018; 8:11635. [PMID: 30072699 PMCID: PMC6072708 DOI: 10.1038/s41598-018-29952-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 07/19/2018] [Indexed: 12/20/2022] Open
Abstract
Whole-genome sequencing methods in familial cancer are useful to unravel rare clinically important cancer predisposing variants. Here, we present improvements in our pedigree-based familial cancer variant prioritization pipeline referred as FCVPPv2, including 12 tools for evaluating deleteriousness and 5 intolerance scores for missense variants. This pipeline is also capable of assessing non-coding regions by combining FANTOM5 data with sets of tools like Bedtools, ChromHMM, Miranda, SNPnexus and Targetscan. We tested this pipeline in a family with history of a papillary thyroid cancer. Only one variant causing an amino acid change G573R (dbSNP ID rs145736623, NM_019609.4:exon11:c.G1717A:p.G573R) in the carboxypeptidase gene CPXM1 survived our pipeline. This variant is located in a highly conserved region across vertebrates in the peptidase_M14 domain (Pfam ID PF00246). The CPXM1 gene may be involved in adipogenesis and extracellular matrix remodelling and it has been suggested to be a tumour suppressor in breast cancer. However, the presence of the variant in the ExAC database suggests it to be a rare polymorphism or a low-penetrance risk allele. Overall, our pipeline is a comprehensive approach for prediction of predisposing variants for high-risk cancer families, for which a functional characterization is a crucial step to confirm their role in cancer predisposition.
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Affiliation(s)
- Abhishek Kumar
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), D69120, Heidelberg, Germany.
| | - Obul Reddy Bandapalli
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), D69120, Heidelberg, Germany.
| | - Nagarajan Paramasivam
- Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), D69120, Heidelberg, Germany
- Medical Faculty Heidelberg, Heidelberg University, D69120, Heidelberg, Germany
| | - Sara Giangiobbe
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), D69120, Heidelberg, Germany
| | | | - Elena Bonora
- Unit of Medical Genetics, S.Orsola-Malpighi Hospital, 40138, Bologna, Italy
| | - Roland Eils
- Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), D69120, Heidelberg, Germany
- Department of Bioinformatics and Functional Genomics, Institute of Pharmacy and Molecular Biotechnology (IPMB) and BioQuant, Heidelberg University, D69120, Heidelberg, Germany
| | - Matthias Schlesner
- Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), D69120, Heidelberg, Germany
- Bioinformatics and Omics Data Analytics, German Cancer Research Center (DKFZ), D69120, Heidelberg, Germany
| | - Kari Hemminki
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), D69120, Heidelberg, Germany
- Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Asta Försti
- Division of Molecular Genetic Epidemiology, German Cancer Research Center (DKFZ), D69120, Heidelberg, Germany
- Center for Primary Health Care Research, Lund University, Malmö, Sweden
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14
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Jager M, Lee MJ, Li C, Farmer SR, Fried SK, Layne MD. Aortic carboxypeptidase-like protein enhances adipose tissue stromal progenitor differentiation into myofibroblasts and is upregulated in fibrotic white adipose tissue. PLoS One 2018; 13:e0197777. [PMID: 29799877 PMCID: PMC5969754 DOI: 10.1371/journal.pone.0197777] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 05/08/2018] [Indexed: 02/06/2023] Open
Abstract
White adipose tissue expands through both adipocyte hypertrophy and hyperplasia and it is hypothesized that fibrosis or excess accumulation of extracellular matrix within adipose tissue may limit tissue expansion contributing to metabolic dysfunction. The pathways that control adipose tissue remodeling are only partially understood, however it is likely that adipose tissue stromal and perivascular progenitors participate in fibrotic remodeling and also serve as adipocyte progenitors. The goal of this study was to investigate the role of the secreted extracellular matrix protein aortic carboxypeptidase-like protein (ACLP) on adipose progenitor differentiation in the context of adipose tissue fibrosis. Treatment of 10T1/2 mouse cells with recombinant ACLP suppressed adipogenesis and enhanced myofibroblast differentiation, which was dependent on transforming growth factor-β receptor kinase activity. Mice fed a chronic high fat diet exhibited white adipose tissue fibrosis with elevated ACLP expression and cellular fractionation of these depots revealed that ACLP was co-expressed with collagens primarily in the inflammatory cell depleted stromal-vascular fraction (SVF). SVF cells isolated from mice fed a high fat diet secreted increased amounts of ACLP compared to low fat diet control SVF. These cells also exhibited reduced adipogenic differentiation capacity in vitro. Importantly, differentiation studies in primary human adipose stromal cells revealed that mature adipocytes do not express ACLP and exogenous ACLP administration blunted their differentiation potential while upregulating myofibroblastic markers. Collectively, these studies identify ACLP as a stromal derived mediator of adipose progenitor differentiation that may limit adipocyte expansion during white adipose tissue fibrosis.
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Affiliation(s)
- Mike Jager
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Mi-Jeong Lee
- Section of Endocrinology, Diabetes, and Nutrition, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Chendi Li
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Stephen R. Farmer
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Susan K. Fried
- Section of Endocrinology, Diabetes, and Nutrition, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Matthew D. Layne
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts, United States of America
- * E-mail:
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15
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Collagen beta (1- O) galactosyltransferase 1 (GLT25D1) is required for the secretion of high molecular weight adiponectin and affects lipid accumulation. Biosci Rep 2017; 37:BSR20170105. [PMID: 28428430 PMCID: PMC5434890 DOI: 10.1042/bsr20170105] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 04/14/2017] [Accepted: 04/20/2017] [Indexed: 01/28/2023] Open
Abstract
Secretion of high molecular weight (HMW) adiponectin is dependent on post-translational modification (PTM) of conserved lysines in the collagenous domain. The present study aims to characterize the enzymes responsible for the PTM of conserved lysines which leads to HMW adiponectin secretion, and to define its significance in relation to obesity. Collagen beta (1-O) galactosyltransferase 1 (GLT25D1) was knocked down in HEK cells modified for the stable expression of adiponectin (adiponectin expressing human embryonic kidney cells, Adipo-HEK) as well as in Simpson Golabi-Behmel-Syndrome (SGBS) adipocytes. Knockdown of GLT25D1 caused a significant decrease in HMW adiponectin in Adipo-HEK cells with no change in total adiponectin. Knockdown in the SGBS cells caused an increase in lipid accumulation yet inhibited adipogenesis. Co-immunoprecipitation with adiponectin and mass spectrometry showed that adiponectin formed a protein complex with lysyl hydroxylase 3 (LH3) and GLT25D1. Transient overexpression of GLT25D1 showed that the intracellular retention of LH3 was dependent on GLT25D1. To determine whether changes in GLT25D1 were significant in obesity, mice were fed a standard chow or high-fat diet (HFD) for 5 weeks. GLT25D1 was significantly decreased in mice fed HFD which coincided with a decrease in HMW adiponectin. We conclude that GLT25D1 regulates HMW adiponectin secretion and lipid accumulation, consistent with changes in mice after high-fat feeding. These results suggest a novel function of GLT25D1 leading to decreased HMW adiponectin secretion in early obesity.
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16
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He J, Chen DL, Samocha-Bonet D, Gillinder KR, Barclay JL, Magor GW, Perkins AC, Greenfield JR, Yang G, Whitehead JP. Fibroblast growth factor-1 (FGF-1) promotes adipogenesis by downregulation of carboxypeptidase A4 (CPA4) - a negative regulator of adipogenesis implicated in the modulation of local and systemic insulin sensitivity. Growth Factors 2016; 34:210-216. [PMID: 28209092 DOI: 10.1080/08977194.2017.1285764] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Fibroblast growth factor-1 (FGF-1) promotes differentiation of human preadipocytes into mature adipocytes via modulation of a BMP and Activin Membrane-Bound Inhibitor (BAMBI)/Peroxisome proliferator-activated receptor (PPARγ)-dependent network. Here, we combined transcriptomic and functional investigations to identify novel downstream effectors aligned with complementary analyses of gene expression in human adipose tissue to explore relationships with insulin sensitivity. RNA-Seq and qRT-PCR analysis revealed significant down-regulation of carboxypeptidase A4 (CPA4) following FGF-1 treatment or induction of differentiation of human preadipocytes in a BAMBI/PPARγ-independent manner. siRNA-mediated knockdown of CPA4 resulted in enhanced differentiation of human preadipocytes. Furthermore, expression of CPA4 in subcutaneous adipose tissue correlated negatively with indices of local and systemic (liver and muscle) insulin sensitivity. These results identify CPA4 as a negative regulator of adipogenesis that is down-regulated by FGF-1 and a putative deleterious modulator of local and systemic insulin sensitivity. Further investigations are required to define the molecular mechanism(s) involved and potential therapeutic opportunities.
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Affiliation(s)
- Jingjing He
- a Laboratory of Animal Fat Deposition and Muscle Development , College of Animal Science and Technology, Northwest A&F University , Yangling , P.R. China
- b Mater Research Institute-University of Queensland, Translational Research Institute , Brisbane , Australia
| | - Daniel L Chen
- c Garvan Institute of Medical Research , Sydney , Australia
| | - Dorit Samocha-Bonet
- c Garvan Institute of Medical Research , Sydney , Australia
- d Faculty of Medicine , University of New South Wales , Randwick , Australia
| | - Kevin R Gillinder
- b Mater Research Institute-University of Queensland, Translational Research Institute , Brisbane , Australia
| | - Johanna L Barclay
- b Mater Research Institute-University of Queensland, Translational Research Institute , Brisbane , Australia
| | - Graham W Magor
- b Mater Research Institute-University of Queensland, Translational Research Institute , Brisbane , Australia
| | - Andrew C Perkins
- b Mater Research Institute-University of Queensland, Translational Research Institute , Brisbane , Australia
| | - Jerry R Greenfield
- c Garvan Institute of Medical Research , Sydney , Australia
- d Faculty of Medicine , University of New South Wales , Randwick , Australia
- e Department of Endocrinology and Diabetes , St Vincent's Hospital , Sydney , Australia , and
| | - Gongshe Yang
- a Laboratory of Animal Fat Deposition and Muscle Development , College of Animal Science and Technology, Northwest A&F University , Yangling , P.R. China
| | - Jonathan P Whitehead
- b Mater Research Institute-University of Queensland, Translational Research Institute , Brisbane , Australia
- f School of Life Sciences , University of Lincoln , Lincolnshire , UK
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