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Yu X, Jiang H, Li J, Ding J, Wu T, Chen K, Ding Z, Xu X. Mitochondrial protein CHCHD10 inhibits NDV replication and reduces pathological changes. Vet Microbiol 2024; 290:109986. [PMID: 38244394 DOI: 10.1016/j.vetmic.2024.109986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/31/2023] [Accepted: 01/06/2024] [Indexed: 01/22/2024]
Abstract
Newcastle disease (ND) is a disease that threatens the world's poultry industry, which is caused by virulent Newcastle disease virus (NDV). As its pathogenic mechanism remains not fully clear, the proteomics of NDV-infected cells were analyzed. The results revealed that coiled-coil-helix-coiled-coil-helix domain containing 10 (CHCHD10) protein displayed a significant decrease at the late stage of NDV infection. To investigate the function of CHCHD10 in NDV infection, its expression after NDV infection was detected both in vivo and in vitro. Besides, the tissue viral loads and pathological damage of C57BL/6 mice with CHCHD10 differently expressed were also investigated. The results showed that the CHCHD10 expression was significantly decreased both in vivo and in vitro at the late stage of NDV infection. The viral loads were significantly higher in CHCHD10 silenced C57BL/6 mice, along with more severe pathological damage and vice versa.
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Affiliation(s)
- Xibing Yu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Hexiang Jiang
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health Inspection & Internet Technology, College of Animal Science and Technology & College of Veterinary Medicine of Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Jindou Li
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Jiaxin Ding
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Tong Wu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Kainan Chen
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Zhuang Ding
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China.
| | - Xiaohong Xu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China.
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Tatman PD, Kao DP, Chatfield KC, Carroll IA, Wagner JA, Jonas ER, Sucharov CC, Port JD, Lowes BD, Minobe WA, Huebler SP, Karimpour-Fard A, Rodriguez EM, Liggett SB, Bristow MR. An extensive β1-adrenergic receptor gene signaling network regulates molecular remodeling in dilated cardiomyopathies. JCI Insight 2023; 8:e169720. [PMID: 37606047 PMCID: PMC10543724 DOI: 10.1172/jci.insight.169720] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 07/11/2023] [Indexed: 08/23/2023] Open
Abstract
We investigated the extent, biologic characterization, phenotypic specificity, and possible regulation of a β1-adrenergic receptor-linked (β1-AR-linked) gene signaling network (β1-GSN) involved in left ventricular (LV) eccentric pathologic remodeling. A 430-member β1-GSN was identified by mRNA expression in transgenic mice overexpressing human β1-ARs or from literature curation, which exhibited opposite directional behavior in interventricular septum endomyocardial biopsies taken from patients with beta-blocker-treated, reverse remodeled dilated cardiomyopathies. With reverse remodeling, the major biologic categories and percentage of the dominant directional change were as follows: metabolic (19.3%, 81% upregulated); gene regulation (14.9%, 78% upregulated); extracellular matrix/fibrosis (9.1%, 92% downregulated); and cell homeostasis (13.3%, 60% upregulated). Regarding the comparison of β1-GSN categories with expression from 19,243 nonnetwork genes, phenotypic selection for major β1-GSN categories was exhibited for LV end systolic volume (contractility measure), ejection fraction (remodeling index), and pulmonary wedge pressure (wall tension surrogate), beginning at 3 months and persisting to study completion at 12 months. In addition, 121 lncRNAs were identified as possibly involved in cis-acting regulation of β1-GSN members. We conclude that an extensive 430-member gene network downstream from the β1-AR is involved in pathologic ventricular remodeling, with metabolic genes as the most prevalent category.
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Affiliation(s)
| | - David P. Kao
- Division of Cardiology, Department of Medicine, and
- Colorado Center for Personalized Medicine University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Kathryn C. Chatfield
- Division of Cardiology, Department of Medicine, and
- Department of Pediatric Cardiology, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - Ian A. Carroll
- Division of Cardiology, Department of Medicine, and
- ARCA biopharma, Westminster, Colorado, USA
| | | | | | | | | | - Brian D. Lowes
- Division of Cardiovascular Medicine, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | | | | | - Anis Karimpour-Fard
- Department of Biomedical Informatics, University of Colorado School of Medicine, Aurora, Colorado, USA
| | | | - Stephen B. Liggett
- Departments of Medicine and Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - Michael R. Bristow
- Division of Cardiology, Department of Medicine, and
- ARCA biopharma, Westminster, Colorado, USA
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Jiang T, Wang Y, Wang X, Xu J. CHCHD2 and CHCHD10: Future therapeutic targets in cognitive disorder and motor neuron disorder. Front Neurosci 2022; 16:988265. [PMID: 36061599 PMCID: PMC9434015 DOI: 10.3389/fnins.2022.988265] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 08/02/2022] [Indexed: 11/27/2022] Open
Abstract
CHCHD2 and CHCHD10 are homolog mitochondrial proteins that play key roles in the neurological, cardiovascular, and reproductive systems. They are also involved in the mitochondrial metabolic process. Although previous research has concentrated on their functions within mitochondria, their functions within apoptosis, synaptic plasticity, cell migration as well as lipid metabolism remain to be concluded. The review highlights the different roles played by CHCHD2 and/or CHCHD10 binding to various target proteins (such as OPA-1, OMA-1, PINK, and TDP43) and reveals their non-negligible effects in cognitive impairments and motor neuron diseases. This review focuses on the functions of CHCHD2 and/or CHCHD10. This review reveals protective effects and mechanisms of CHCHD2 and CHCHD10 in neurodegenerative diseases characterized by cognitive and motor deficits, such as frontotemporal dementia (FTD), Lewy body dementia (LBD), Parkinson's disease (PD) and amyotrophic lateral sclerosis (ALS). However, there are numerous specific mechanisms that have yet to be elucidated, and additional research into these mechanisms is required.
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Affiliation(s)
- Tianlin Jiang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, China
| | - Yanli Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xiaohong Wang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Experimental and Translational Non-coding RNA Research, Yangzhou University, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Jun Xu
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
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Adnane F, El-Zayat E, Fahmy HM. The combinational application of photodynamic therapy and nanotechnology in skin cancer treatment: A review. Tissue Cell 2022; 77:101856. [DOI: 10.1016/j.tice.2022.101856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 06/11/2022] [Accepted: 06/11/2022] [Indexed: 02/07/2023]
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Xia W, Qiu J, Peng Y, Snyder MM, Gu L, Huang K, Luo N, Yue F, Kuang S. Chchd10 is dispensable for myogenesis but critical for adipose browning. CELL REGENERATION (LONDON, ENGLAND) 2022; 11:14. [PMID: 35362877 PMCID: PMC8975916 DOI: 10.1186/s13619-022-00111-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 01/27/2022] [Indexed: 12/20/2022]
Abstract
The Chchd10 gene encodes a coiled-coil-helix-coiled-coil-helix-domain containing protein predicted to function in the mitochondrion and nucleus. Mutations of Chchd10 are associated with ALS, dementia and myopathy in humans and animal models, but how knockout of Chchd10 (Chchd10KO) affects various tissues especially skeletal muscle and adipose tissues remains unclear. Here we show that Chchd10 expression increases as myoblasts and preadipocytes differentiate. During myogenesis, CHCHD10 interacts with TAR DNA binding protein 43 (TDP-43) in regenerating myofibers in vivo and in newly differentiated myotubes ex vivo. Surprisingly, Chchd10KO mice had normal skeletal muscle development, growth and regeneration, with moderate defects in grip strength and motor performance. Chchd10KO similarly had no effects on development of brown and white adipose tissues (WAT). However, Chchd10KO mice had blunted response to acute cold and attenuated cold-induced browning of WAT, with markedly reduced UCP1 levels. Together, these results demonstrate that Chchd10 is dispensable for normal myogenesis and adipogenesis but is required for normal motility and cold-induced, mitochondrion-dependent browning of adipocytes. The data also suggest that human CHCHD10 mutations cause myopathy through a gain-of-function mechanism.
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Affiliation(s)
- Wei Xia
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, 071000, China. .,Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA. .,College of Animal and Veterinary Science, Southwest Minzu University, Chengdu, 610041, China.
| | - Jiamin Qiu
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Ying Peng
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Madigan M Snyder
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Lijie Gu
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA.,College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Kuilong Huang
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Nanjian Luo
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Feng Yue
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Shihuan Kuang
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA.
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Ning X, Shi G, Ren S, Liu S, Ding J, Zhang R, Li L, Xie Q, Xu W, Meng F, Ma R. OUP accepted manuscript. Oncologist 2022; 27:e64-e75. [PMID: 35305106 PMCID: PMC8842331 DOI: 10.1093/oncolo/oyab015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 11/18/2021] [Indexed: 11/17/2022] Open
Abstract
Background The glioblastoma-amplified sequence (GBAS) is a newly identified gene that is amplified in approximately 40% of glioblastomas. This article probes into the expression, prognostic significance, and possible pathways of GBAS in ovarian cancer (OC). Method Immunohistochemical methods were used to evaluate the expression level of GBAS in OC and its relationship with clinicopathological characteristics and prognosis. Glioblastoma-amplified sequence shRNA was designed to transfect into OC cell lines to silence GBAS expression, then detect the proliferation, apoptosis, and migration ability of the cell. Furthermore, an in vitro tumor formation experiment in mice was constructed to prove the effect of GBAS expression on the growth of OC in vivo. To further study the regulation mechanism of GBAS, we performed co-immunoprecipitation (Co-IP) and shotgun LC-MS mass spectrometry identification. Results Immunohistochemistry indicated that GBAS was markedly overexpressed in OC compared with normal ovarian tissue and was associated with lymph node metastasis. Inhibition of GBAS expression can significantly reduce OC cell proliferation, colony formation, promote cell apoptosis, and reduce the ability of cell migration and invasion. In vivo tumor formation experiments showed that the size and weight of tumors in mice after GBAS expression knockdown was significantly smaller. Glioblastoma-amplified sequence may be combined with elongation factor 1 alpha 1 (eEF1A1) to achieve its regulation in OC. Bioinformatics analysis data indicate that GBAS may be a key regulator of mitochondria-associated pathways, therefore controlling cancer progression. MicroRNA-27b, MicroRNA-23a, and MicroRNA-590 may directly targeting GBAS affects the biological behavior of OC cells. Conclusion The glioblastoma-amplified sequence may regulate the proliferation and metastasis of OC cells by combining with eEF1A1.
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Affiliation(s)
- Xin Ning
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Guangyue Shi
- Department of Oncology, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Sujing Ren
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Shuang Liu
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Jing Ding
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Ruichun Zhang
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Lianwei Li
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Qin Xie
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Wei Xu
- Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Fanling Meng
- Corresponding author: Fanling Meng, Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin 150081, China. Tel: +86 451 85718069;
| | - Rong Ma
- Corresponding author: Rong Ma, Department of Gynecology, Harbin Medical University Cancer Hospital, Harbin 150081, China. Tel: +86 451 85718058;
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Fathi E, Yarbro JM, Homayouni R. NIPSNAP protein family emerges as a sensor of mitochondrial health. Bioessays 2021; 43:e2100014. [PMID: 33852167 PMCID: PMC10577685 DOI: 10.1002/bies.202100014] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 03/17/2021] [Accepted: 03/19/2021] [Indexed: 12/11/2022]
Abstract
Since their discovery over two decades ago, the molecular and cellular functions of the NIPSNAP family of proteins (NIPSNAPs) have remained elusive until recently. NIPSNAPs interact with a variety of mitochondrial and cytoplasmic proteins. They have been implicated in multiple cellular processes and associated with different physiologic and pathologic conditions, including pain transmission, Parkinson's disease, and cancer. Recent evidence demonstrated a direct role for NIPSNAP1 and NIPSNAP2 proteins in regulation of mitophagy, a process that is critical for cellular health and maintenance. Importantly, NIPSNAPs contain a 110 amino acid domain that is evolutionary conserved from mammals to bacteria. However, the molecular function of the conserved NIPSNAP domain and its potential role in mitophagy have not been explored. It stands to reason that the highly conserved NIPSNAP domain interacts with a substrate that is ubiquitously present across all species and can perhaps act as a sensor for mitochondrial health.
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Affiliation(s)
- Esmat Fathi
- Department of Biological Sciences, University of Memphis, Memphis, TN, United States
- Beaumont Research Institute, Beaumont Health, Royal Oak, MI, United States
| | - Jay M. Yarbro
- Departments of Structural Biology and Developmental Neurobiology, St. Jude Children’s Research Hospital, Memphis, TN, United States
- Integrated Biomedical Sciences Program, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Ramin Homayouni
- Beaumont Research Institute, Beaumont Health, Royal Oak, MI, United States
- Oakland University William Beaumont School of Medicine, Oakland University, Rochester, MI, United States
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Wang X, Li S, Liu H. Co-delivery of chitosan nanoparticles of 5-aminolevulinic acid and shGBAS for improving photodynamic therapy efficacy in oral squamous cell carcinomas. Photodiagnosis Photodyn Ther 2021; 34:102218. [PMID: 33592329 DOI: 10.1016/j.pdpdt.2021.102218] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/02/2021] [Accepted: 02/08/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND The improvement of gene therapy provides hope for the treatment of cancer. However, malignant tumor is a multifactorial disease, which remains difficult to be cured with a single therapy. Our previous study reported that mitochondrial genes glioblastoma-amplified sequence (GBAS) plays a role in the development and treatment of oral squamous cell carcinoma (OSCC). The current study focused on building a mitochondrial-targeting drug co-delivery system for combined photodynamic therapy (PDT) and gene therapy. METHODS 5-aminolevulinic acid (ALA) photosensitizer loaded chitosan (CS) nanoparticles were prepared using ionic crosslinking method, and further synthesized with the GBAS gene plasmid DNA (shGBAS) by electrostatic attraction. We detected the effects of PDT using the co-delivery system (CS-ALA-shGBAS) on cell proliferation and mitochondrial injury by MTT and reactive oxygen species (ROS) assays, respectively. Additionally, a oral cancer Xenograft model of nude mice was built to test its inhibitive effect on the cancerous growth in vivo. RESULTS A novel nanocomposite, CS-ALA-shGBAS, was found to be spherical structures and had good dispersion, stability and hypotoxicity. Gel retardation assay showed that CS-ALA nanoparticle could synthesize shGBAS at and above Nanoparticle/Plasmid ratios of 1/2. Excitingly, the co-delivery system was suitable for transfected cells and displayed a superior mitochondrially targeted killing effect on OSCC in vitro and in vivo. CONCLUSION Our study provides evidence that the chitosan-based co-delivery system of ALA-induced protoporphyrin IX (PpIX) photosensitizer and GBAS gene may be a novel mode of combined therapy for OSCC.
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Affiliation(s)
- Xing Wang
- Department of Oral Medicine, Peking University School and Hospital of Stomatology, Beijing, China; Department of Stomatology, Chinese PLA General Hospital, Beijing, China
| | - Shufang Li
- Department of Oral Medicine, Peking University School and Hospital of Stomatology, Beijing, China
| | - Hongwei Liu
- Department of Oral Medicine, Peking University School and Hospital of Stomatology, Beijing, China.
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Gladyck S, Aras S, Hüttemann M, Grossman LI. Regulation of COX Assembly and Function by Twin CX 9C Proteins-Implications for Human Disease. Cells 2021; 10:197. [PMID: 33498264 PMCID: PMC7909247 DOI: 10.3390/cells10020197] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 12/29/2022] Open
Abstract
Oxidative phosphorylation is a tightly regulated process in mammals that takes place in and across the inner mitochondrial membrane and consists of the electron transport chain and ATP synthase. Complex IV, or cytochrome c oxidase (COX), is the terminal enzyme of the electron transport chain, responsible for accepting electrons from cytochrome c, pumping protons to contribute to the gradient utilized by ATP synthase to produce ATP, and reducing oxygen to water. As such, COX is tightly regulated through numerous mechanisms including protein-protein interactions. The twin CX9C family of proteins has recently been shown to be involved in COX regulation by assisting with complex assembly, biogenesis, and activity. The twin CX9C motif allows for the import of these proteins into the intermembrane space of the mitochondria using the redox import machinery of Mia40/CHCHD4. Studies have shown that knockdown of the proteins discussed in this review results in decreased or completely deficient aerobic respiration in experimental models ranging from yeast to human cells, as the proteins are conserved across species. This article highlights and discusses the importance of COX regulation by twin CX9C proteins in the mitochondria via COX assembly and control of its activity through protein-protein interactions, which is further modulated by cell signaling pathways. Interestingly, select members of the CX9C protein family, including MNRR1 and CHCHD10, show a novel feature in that they not only localize to the mitochondria but also to the nucleus, where they mediate oxygen- and stress-induced transcriptional regulation, opening a new view of mitochondrial-nuclear crosstalk and its involvement in human disease.
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Affiliation(s)
- Stephanie Gladyck
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA; (S.G.); (S.A.); (M.H.)
| | - Siddhesh Aras
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA; (S.G.); (S.A.); (M.H.)
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, Maryland and Detroit, MI 48201, USA
| | - Maik Hüttemann
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA; (S.G.); (S.A.); (M.H.)
| | - Lawrence I. Grossman
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA; (S.G.); (S.A.); (M.H.)
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, Maryland and Detroit, MI 48201, USA
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Trinh D, Israwi AR, Arathoon LR, Gleave JA, Nash JE. The multi-faceted role of mitochondria in the pathology of Parkinson's disease. J Neurochem 2020; 156:715-752. [PMID: 33616931 DOI: 10.1111/jnc.15154] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 07/29/2020] [Accepted: 07/31/2020] [Indexed: 12/14/2022]
Abstract
Mitochondria are essential for neuronal function. They produce ATP to meet energy demands, regulate homeostasis of ion levels such as calcium and regulate reactive oxygen species that cause oxidative cellular stress. Mitochondria have also been shown to regulate protein synthesis within themselves, as well as within the nucleus, and also influence synaptic plasticity. These roles are especially important for neurons, which have higher energy demands and greater susceptibility to stress. Dysfunction of mitochondria has been associated with several neurodegenerative diseases, including Parkinson's disease, Alzheimer's disease, Huntington's disease, Glaucoma and Amyotrophic Lateral Sclerosis. The focus of this review is on how and why mitochondrial function is linked to the pathology of Parkinson's disease (PD). Many of the PD-linked genetic mutations which have been identified result in dysfunctional mitochondria, through a wide-spread number of mechanisms. In this review, we describe how susceptible neurons are predisposed to be vulnerable to the toxic events that occur during the neurodegenerative process of PD, and how mitochondria are central to these pathways. We also discuss ways in which proteins linked with familial PD control mitochondrial function, both physiologically and pathologically, along with their implications in genome-wide association studies and risk assessment. Finally, we review potential strategies for disease modification through mitochondrial enhancement. Ultimately, agents capable of both improving and/or restoring mitochondrial function, either alone, or in conjunction with other disease-modifying agents may halt or slow the progression of neurodegeneration in Parkinson's disease.
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Affiliation(s)
- Dennison Trinh
- Department of Biological Sciences, University of Toronto Scarborough, Centre for Neurobiology of Stress, Toronto, ON, Canada
| | - Ahmad R Israwi
- Department of Biological Sciences, University of Toronto Scarborough, Centre for Neurobiology of Stress, Toronto, ON, Canada
| | - Lindsay R Arathoon
- Department of Biological Sciences, University of Toronto Scarborough, Centre for Neurobiology of Stress, Toronto, ON, Canada
| | - Jacqueline A Gleave
- Department of Biological Sciences, University of Toronto Scarborough, Centre for Neurobiology of Stress, Toronto, ON, Canada
| | - Joanne E Nash
- Department of Biological Sciences, University of Toronto Scarborough, Centre for Neurobiology of Stress, Toronto, ON, Canada
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Tsang HG, Clark EL, Markby GR, Bush SJ, Hume DA, Corcoran BM, MacRae VE, Summers KM. Expression of Calcification and Extracellular Matrix Genes in the Cardiovascular System of the Healthy Domestic Sheep ( Ovis aries). Front Genet 2020; 11:919. [PMID: 33101359 PMCID: PMC7506100 DOI: 10.3389/fgene.2020.00919] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 07/23/2020] [Indexed: 12/31/2022] Open
Abstract
The maintenance of a healthy cardiovascular system requires expression of genes that contribute to essential biological activities and repression of those that are associated with functions likely to be detrimental to cardiovascular homeostasis. Vascular calcification is a major disruption to cardiovascular homeostasis, where tissues of the cardiovascular system undergo ectopic calcification and consequent dysfunction, but little is known about the expression of calcification genes in the healthy cardiovascular system. Large animal models are of increasing importance in cardiovascular disease research as they demonstrate more similar cardiovascular features (in terms of anatomy, physiology and size) to humans than do rodent species. We used RNA sequencing results from the sheep, which has been utilized extensively to examine calcification of prosthetic cardiac valves, to explore the transcriptome of the heart and cardiac valves in this large animal, in particular looking at expression of calcification and extracellular matrix genes. We then examined genes implicated in the process of vascular calcification in a wide array of cardiovascular tissues and across multiple developmental stages, using RT-qPCR. Our results demonstrate that there is a balance between genes that promote and those that suppress mineralization during development and across cardiovascular tissues. We show extensive expression of genes encoding proteins involved in formation and maintenance of the extracellular matrix in cardiovascular tissues, and high expression of hematopoietic genes in the cardiac valves. Our analysis will support future research into the functions of implicated genes in the development of valve calcification, and increase the utility of the sheep as a large animal model for understanding ectopic calcification in cardiovascular disease. This study provides a foundation to explore the transcriptome of the developing cardiovascular system and is a valuable resource for the fields of mammalian genomics and cardiovascular research.
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Affiliation(s)
- Hiu-Gwen Tsang
- The Roslin Institute and R(D)SVS, The University of Edinburgh, Edinburgh, United Kingdom
| | - Emily L. Clark
- The Roslin Institute and R(D)SVS, The University of Edinburgh, Edinburgh, United Kingdom
| | - Greg R. Markby
- The Roslin Institute and R(D)SVS, The University of Edinburgh, Edinburgh, United Kingdom
| | - Stephen J. Bush
- The Roslin Institute and R(D)SVS, The University of Edinburgh, Edinburgh, United Kingdom
- Nuffield Department of Clinical Medicine, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
| | - David A. Hume
- Mater Research Institute-University of Queensland, Translational Research Institute, Woolloongabba, QLD, Australia
| | - Brendan M. Corcoran
- The Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Edinburgh, United Kingdom
| | - Vicky E. MacRae
- The Roslin Institute and R(D)SVS, The University of Edinburgh, Edinburgh, United Kingdom
| | - Kim M. Summers
- The Roslin Institute and R(D)SVS, The University of Edinburgh, Edinburgh, United Kingdom
- Mater Research Institute-University of Queensland, Translational Research Institute, Woolloongabba, QLD, Australia
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Xiao Y, Zhang J, Shu X, Bai L, Xu W, Wang A, Chen A, Tu WY, Wang J, Zhang K, Luo B, Shen C. Loss of mitochondrial protein CHCHD10 in skeletal muscle causes neuromuscular junction impairment. Hum Mol Genet 2019; 29:1784-1796. [PMID: 31261376 DOI: 10.1093/hmg/ddz154] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/11/2019] [Accepted: 06/21/2019] [Indexed: 12/12/2022] Open
Abstract
Abstract
The neuromuscular junction (NMJ) is a synapse between motoneurons and skeletal muscles to control motor behavior. Acetylcholine receptors (AChRs) are restricted at the synaptic region for proper neurotransmission. Mutations in the mitochondrial CHCHD10 protein have been identified in multiple neuromuscular disorders; however, the physiological roles of CHCHD10 at NMJs remain elusive. Here, we report that CHCHD10 is highly expressed at the postsynapse of NMJs in skeletal muscles. Muscle conditional knockout CHCHD10 mice showed motor defects, abnormal neuromuscular transmission and NMJ structure. Mechanistically, we found that mitochondrial CHCHD10 is required for ATP production, which facilitates AChR expression and promotes agrin-induced AChR clustering. Importantly, ATP could effectively rescue the reduction of AChR clusters in the CHCHD10-ablated muscles. Our study elucidates a novel physiological role of CHCHD10 at the peripheral synapse. It suggests that mitochondria dysfunction contributes to neuromuscular pathogenesis.
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Affiliation(s)
- Yatao Xiao
- The First Affiliated Hospital, Institute of Translational Medicine, School of Medicine, Zhejiang University, Zhejiang, China 310003
- Department of Neurobiology, Key laboratory of Medical Neurobiology of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China 310058
| | - Jianmin Zhang
- The First Affiliated Hospital, Institute of Translational Medicine, School of Medicine, Zhejiang University, Zhejiang, China 310003
| | - Xiaoqiu Shu
- The First Affiliated Hospital, Institute of Translational Medicine, School of Medicine, Zhejiang University, Zhejiang, China 310003
| | - Lei Bai
- The First Affiliated Hospital, Institute of Translational Medicine, School of Medicine, Zhejiang University, Zhejiang, China 310003
| | - Wentao Xu
- The First Affiliated Hospital, Institute of Translational Medicine, School of Medicine, Zhejiang University, Zhejiang, China 310003
| | - Ailian Wang
- The First Affiliated Hospital, Institute of Translational Medicine, School of Medicine, Zhejiang University, Zhejiang, China 310003
| | - Aizhong Chen
- The First Affiliated Hospital, Institute of Translational Medicine, School of Medicine, Zhejiang University, Zhejiang, China 310003
| | - Wen-Yo Tu
- The First Affiliated Hospital, Institute of Translational Medicine, School of Medicine, Zhejiang University, Zhejiang, China 310003
| | - Jianwen Wang
- The First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, China 310003
| | - Kejing Zhang
- The First Affiliated Hospital, Institute of Translational Medicine, School of Medicine, Zhejiang University, Zhejiang, China 310003
- Department of Neurobiology, Key laboratory of Medical Neurobiology of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China 310058
| | - Benyan Luo
- The First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, China 310003
| | - Chengyong Shen
- The First Affiliated Hospital, Institute of Translational Medicine, School of Medicine, Zhejiang University, Zhejiang, China 310003
- Department of Neurobiology, Key laboratory of Medical Neurobiology of Zhejiang Province, School of Medicine, Zhejiang University, Zhejiang, China 310058
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13
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Imai Y, Meng H, Shiba-Fukushima K, Hattori N. Twin CHCH Proteins, CHCHD2, and CHCHD10: Key Molecules of Parkinson's Disease, Amyotrophic Lateral Sclerosis, and Frontotemporal Dementia. Int J Mol Sci 2019; 20:ijms20040908. [PMID: 30791515 PMCID: PMC6412816 DOI: 10.3390/ijms20040908] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 02/15/2019] [Accepted: 02/17/2019] [Indexed: 12/12/2022] Open
Abstract
Mutations of coiled-coil-helix-coiled-coil-helix domain containing 2 (CHCHD2) and 10 (CHCHD10) have been found to be linked to Parkinson’s disease (PD), amyotrophic lateral sclerosis (ALS), and/or frontotemporal lobe dementia (FTD). CHCHD2 and CHCHD10 proteins, which are homologous proteins with 54% identity in amino acid sequence, belong to the mitochondrial coiled-coil-helix-coiled-coil-helix (CHCH) domain protein family. A series of studies reveals that these twin proteins form a multimodal complex, producing a variety of pathophysiology by the disease-causing variants of these proteins. In this review, we summarize the present knowledge about the physiological and pathological roles of twin proteins, CHCHD2 and CHCHD10, in neurodegenerative diseases.
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Affiliation(s)
- Yuzuru Imai
- Department of Research for Parkinson's Disease, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan.
- Department of Treatment and Research in Multiple Sclerosis and Neuro-intractable Disease, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan.
| | - Hongrui Meng
- Department of Neurology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan.
| | - Kahori Shiba-Fukushima
- Department of Neurodegenerative and Demented Disorders, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan.
| | - Nobutaka Hattori
- Department of Research for Parkinson's Disease, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan.
- Department of Treatment and Research in Multiple Sclerosis and Neuro-intractable Disease, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan.
- Department of Neurology, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan.
- Department of Neurodegenerative and Demented Disorders, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan.
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14
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Hong MJ, Lee SY, Choi JE, Kang H, Do SK, Lee JH, Yoo SS, Lee EB, Seok Y, Cho S, Jheon S, Lee J, Cha SI, Kim CH, Park JY. Intronic variant of EGFR is associated with GBAS expression and survival outcome of early-stage non-small cell lung cancer. Thorac Cancer 2018; 9:916-923. [PMID: 29806744 PMCID: PMC6068432 DOI: 10.1111/1759-7714.12757] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 04/03/2018] [Accepted: 04/06/2018] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Genome-wide association studies have indicated that most of the currently identified disease and trait-associated single nucleotide polymorphisms (SNPs) are intronic or intergenic. RegulomeDB is a recently developed database that provides functional annotations for regulatory features of SNPs located in non-coding regions. We evaluated the potential regulatory SNPs in the EGFR gene region using RegulomeDB and their associations with prognosis after surgery in non-small cell lung cancer (NSCLC) patients. METHODS A total of 698 patients with surgically resected NSCLC were enrolled and seven SNPs were selected based on the RegulomeDB database. All SNPs were genotyped using SEQUENOM MassARRAY iPLEX assay. RESULTS Among the seven SNPs evaluated, rs9642391 (EGFR ivs19+2851C>G) was significantly associated with survival outcome (adjusted hazard ratio [HR] for overall survival = 0.70, 95% confidence interval [CI] 0.56-0.87, P = 0.001; adjusted HR for disease-free survival = 0.82, 95% CI 0.70-0.97, P = 0.02; under a codominant model). According to RegulomeDB, rs9642391C>G, which is located in intron 19 of EGFR, was predicted to influence the expression of GBAS but not EGFR. As predicted, rs9642391C>G was associated with GBAS (P = 0.024) but not EGFR messenger RNA expression in tumor tissues. CONCLUSION In conclusion, our study provides evidence that rs9642391C>G in the intron of EGFR is associated with GBAS expression and survival outcomes of patients with surgically resected early-stage NSCLC.
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Affiliation(s)
- Mi Jeong Hong
- Department of Cell and Matrix Research Institute, School of MedicineKyungpook National UniversityDaeguKorea
| | - Shin Yup Lee
- Department of Internal Medicine, School of MedicineKyungpook National UniversityDaeguKorea
- Lung Cancer CenterKyungpook National University Chilgok HospitalDaeguKorea
| | - Jin Eun Choi
- Department of Cell and Matrix Research Institute, School of MedicineKyungpook National UniversityDaeguKorea
| | - Hyo‐Gyoung Kang
- Department of Cell and Matrix Research Institute, School of MedicineKyungpook National UniversityDaeguKorea
| | - Sook Kyung Do
- Department of Biochemistry and Cell Biology, School of MedicineKyungpook National UniversityDaeguKorea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical ScienceKyungpook National UniversityDaeguKorea
| | - Jang Hyuck Lee
- Department of Biochemistry and Cell Biology, School of MedicineKyungpook National UniversityDaeguKorea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical ScienceKyungpook National UniversityDaeguKorea
| | - Seung Soo Yoo
- Department of Internal Medicine, School of MedicineKyungpook National UniversityDaeguKorea
- Lung Cancer CenterKyungpook National University Chilgok HospitalDaeguKorea
| | - Eung Bae Lee
- Lung Cancer CenterKyungpook National University Chilgok HospitalDaeguKorea
- Department of Thoracic Surgery, School of MedicineKyungpook National UniversityDaeguKorea
| | - Yangki Seok
- Lung Cancer CenterKyungpook National University Chilgok HospitalDaeguKorea
- Department of Thoracic Surgery, School of MedicineKyungpook National UniversityDaeguKorea
| | - Sukki Cho
- Department of Thoracic and Cardiovascular SurgerySeoul National University School of MedicineSeoulKorea
| | - Sanghoon Jheon
- Department of Thoracic and Cardiovascular SurgerySeoul National University School of MedicineSeoulKorea
| | - Jaehee Lee
- Department of Internal Medicine, School of MedicineKyungpook National UniversityDaeguKorea
| | - Seung Ick Cha
- Department of Internal Medicine, School of MedicineKyungpook National UniversityDaeguKorea
| | - Chang Ho Kim
- Department of Internal Medicine, School of MedicineKyungpook National UniversityDaeguKorea
| | - Jae Yong Park
- Department of Cell and Matrix Research Institute, School of MedicineKyungpook National UniversityDaeguKorea
- Department of Internal Medicine, School of MedicineKyungpook National UniversityDaeguKorea
- Lung Cancer CenterKyungpook National University Chilgok HospitalDaeguKorea
- Department of Biochemistry and Cell Biology, School of MedicineKyungpook National UniversityDaeguKorea
- BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical ScienceKyungpook National UniversityDaeguKorea
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15
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Jacob J, Ngo D, Finkel N, Pitts R, Gleim S, Benson MD, Keyes MJ, Farrell LA, Morgan T, Jennings LL, Gerszten RE. Application of Large-Scale Aptamer-Based Proteomic Profiling to Planned Myocardial Infarctions. Circulation 2018; 137:1270-1277. [PMID: 29222138 PMCID: PMC5860961 DOI: 10.1161/circulationaha.117.029443] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 11/08/2017] [Indexed: 11/16/2022]
Abstract
BACKGROUND Emerging proteomic technologies using novel affinity-based reagents allow for efficient multiplexing with high-sample throughput. To identify early biomarkers of myocardial injury, we recently applied an aptamer-based proteomic profiling platform that measures 1129 proteins to samples from patients undergoing septal alcohol ablation for hypertrophic cardiomyopathy, a human model of planned myocardial injury. Here, we examined the scalability of this approach using a markedly expanded platform to study a far broader range of human proteins in the context of myocardial injury. METHODS We applied a highly multiplexed, expanded proteomic technique that uses single-stranded DNA aptamers to assay 4783 human proteins (4137 distinct human gene targets) to derivation and validation cohorts of planned myocardial injury, individuals with spontaneous myocardial infarction, and at-risk controls. RESULTS We found 376 target proteins that significantly changed in the blood after planned myocardial injury in a derivation cohort (n=20; P<1.05E-05, 1-way repeated measures analysis of variance, Bonferroni threshold). Two hundred forty-seven of these proteins were validated in an independent planned myocardial injury cohort (n=15; P<1.33E-04, 1-way repeated measures analysis of variance); >90% were directionally consistent and reached nominal significance in the validation cohort. Among the validated proteins that were increased within 1 hour after planned myocardial injury, 29 were also elevated in patients with spontaneous myocardial infarction (n=63; P<6.17E-04). Many of the novel markers identified in our study are intracellular proteins not previously identified in the peripheral circulation or have functional roles relevant to myocardial injury. For example, the cardiac LIM protein, cysteine- and glycine-rich protein 3, is thought to mediate cardiac mechanotransduction and stress responses, whereas the mitochondrial ATP synthase F0 subunit component is a vasoactive peptide on its release from cells. Last, we performed aptamer-affinity enrichment coupled with mass spectrometry to technically verify aptamer specificity for a subset of the new biomarkers. CONCLUSIONS Our results demonstrate the feasibility of large-scale aptamer multiplexing at a level that has not previously been reported and with sample throughput that greatly exceeds other existing proteomic methods. The expanded aptamer-based proteomic platform provides a unique opportunity for biomarker and pathway discovery after myocardial injury.
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Affiliation(s)
- Jaison Jacob
- Novartis Institute for BioMedical Research, Chemical Biology and Therapeutics, Cambridge, MA (J.J., N.F., R.P., S.G., T.M., L.L.J.)
| | - Debby Ngo
- Division of Pulmonary, Critical Care and Sleep Medicine (D.N.)
- Cardiovascular Research Center (D.N., M.J.K., L.A.F., R.E.G.)
| | - Nancy Finkel
- Novartis Institute for BioMedical Research, Chemical Biology and Therapeutics, Cambridge, MA (J.J., N.F., R.P., S.G., T.M., L.L.J.)
| | - Rebecca Pitts
- Novartis Institute for BioMedical Research, Chemical Biology and Therapeutics, Cambridge, MA (J.J., N.F., R.P., S.G., T.M., L.L.J.)
| | - Scott Gleim
- Novartis Institute for BioMedical Research, Chemical Biology and Therapeutics, Cambridge, MA (J.J., N.F., R.P., S.G., T.M., L.L.J.)
| | - Mark D Benson
- Cardiovascular Division, Brigham and Women's Hospital, Boston, MA (M.D.B.)
| | | | | | - Thomas Morgan
- Novartis Institute for BioMedical Research, Chemical Biology and Therapeutics, Cambridge, MA (J.J., N.F., R.P., S.G., T.M., L.L.J.)
| | - Lori L Jennings
- Novartis Institute for BioMedical Research, Chemical Biology and Therapeutics, Cambridge, MA (J.J., N.F., R.P., S.G., T.M., L.L.J.)
| | - Robert E Gerszten
- Cardiovascular Research Center (D.N., M.J.K., L.A.F., R.E.G.)
- Division of Cardiovascular Medicine (R.E.G.), Beth Israel Deaconess Medical Center, Boston, MA
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16
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Purandare N, Somayajulu M, Hüttemann M, Grossman LI, Aras S. The cellular stress proteins CHCHD10 and MNRR1 (CHCHD2): Partners in mitochondrial and nuclear function and dysfunction. J Biol Chem 2018. [PMID: 29540477 DOI: 10.1074/jbc.ra117.001073] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Coiled-coil-helix-coiled-coil-helix domain-containing 10 (CHCHD10) and CHCHD2 (MNRR1) are homologous proteins with 58% sequence identity and belong to the twin CX9C family of proteins that mediate cellular stress responses. Despite the identification of several neurodegeneration-associated mutations in the CHCHD10 gene, few studies have assessed its physiological role. Here, we investigated CHCHD10's function as a regulator of oxidative phosphorylation in the mitochondria and the nucleus. We show that CHCHD10 copurifies with cytochrome c oxidase (COX) and up-regulates COX activity by serving as a scaffolding protein required for MNRR1 phosphorylation, mediated by ARG (ABL proto-oncogene 2, nonreceptor tyrosine kinase (ABL2)). The CHCHD10 gene was maximally transcribed in cultured cells at 8% oxygen, unlike MNRR1, which was maximally expressed at 4%, suggesting a fine-tuned oxygen-sensing system that adapts to the varying oxygen concentrations in the human body under physiological conditions. We show that nuclear CHCHD10 protein down-regulates the expression of genes harboring the oxygen-responsive element (ORE) in their promoters by interacting with and augmenting the activity of the largely uncharacterized transcriptional repressor CXXC finger protein 5 (CXXC5). We further show that two genetic CHCHD10 disease variants, G66V and P80L, in the mitochondria exhibit faulty interactions with MNRR1 and COX, reducing respiration and increasing reactive oxygen species (ROS), and in the nucleus abrogating transcriptional repression of ORE-containing genes. Our results reveal that CHCHD10 positively regulates mitochondrial respiration and contributes to transcriptional repression of ORE-containing genes in the nucleus, and that genetic CHCHD10 variants are impaired in these activities.
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Affiliation(s)
- Neeraja Purandare
- From the Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
| | - Mallika Somayajulu
- From the Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
| | - Maik Hüttemann
- From the Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
| | - Lawrence I Grossman
- From the Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
| | - Siddhesh Aras
- From the Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan 48201
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17
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Al-Zaidan L, El Ruz RA, Malki AM. Screening Novel Molecular Targets of Metformin in Breast Cancer by Proteomic Approach. Front Public Health 2017; 5:277. [PMID: 29085821 PMCID: PMC5650619 DOI: 10.3389/fpubh.2017.00277] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 09/27/2017] [Indexed: 01/09/2023] Open
Abstract
Metformin is a commonly prescribed antihyperglycemic drug, and has been investigated in vivo and in vitro for its effect to improve the comorbidity of diabetes and various types of cancers. Several studies investigated the therapeutic mechanisms of metformin on cancer cells, but the exact mechanism of metformin’s effect on the proteomic pathways of cancer cells is yet to be further investigated. The main objective of our research line is to discover safe and alternative therapeutic options for breast cancer, we aimed in this study to design a novel “bottom up proteomics workflow” in which proteins were first broken into peptides to reveal their identity, then the proteomes were precisely evaluated using spectrometry analysis. In our study, metformin suppressed cell proliferation and induced apoptosis in human breast carcinoma cell line MCF-7 with minimal toxicity to normal breast epithelial cells MCF-10. Metformin induced apoptosis by arresting cells in G1 phase as evaluated by flow cytometric analysis. Moreover, The G1 phase arrest for the MCF-7 has been confirmed by increased expression levels of p21 and reduction in cyclin D1 level. Additionally, metformin increased the expression levels of p53, Bax, Bad while it reduced expression levels of Akt, Bcl-2, and Mdm2. The study employed a serviceable strategy that investigates metformin-dependent changes in the proteome using a literature-derived network. The protein extracts of the treated and untreated cell lines were analyzed employing proteomic approaches; the findings conveyed a proposed mechanism of the effectual tactics of metformin on breast cancer cells. Metformin proposed an antibreast cancer effect through the examination of the proteomic pathways upon the MCF-7 and MCF-10A exposure to the drug. Our findings proposed prolific proteomic changes that revealed the therapeutic mechanisms of metformin on breast cancer cells upon their exposure. In conclusion, the reported proteomic pathways lead to increase the understanding of breast cancer prognosis and permit future studies to examine the effect of metformin on the proteomic pathways against other types of cancers. Finally, it suggests the possibility to develop further therapeutic generations of metformin with increased anticancer effect through targeting specific proteomes.
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Affiliation(s)
- Lobna Al-Zaidan
- Biomedical Sciences Department, College of Health Sciences, Qatar University, Doha, Qatar
| | - Rasha Abu El Ruz
- Biomedical Sciences Department, College of Health Sciences, Qatar University, Doha, Qatar
| | - Ahmed M Malki
- Biomedical Sciences Department, College of Health Sciences, Qatar University, Doha, Qatar
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18
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Clark EL, Bush SJ, McCulloch MEB, Farquhar IL, Young R, Lefevre L, Pridans C, Tsang HG, Wu C, Afrasiabi C, Watson M, Whitelaw CB, Freeman TC, Summers KM, Archibald AL, Hume DA. A high resolution atlas of gene expression in the domestic sheep (Ovis aries). PLoS Genet 2017; 13:e1006997. [PMID: 28915238 PMCID: PMC5626511 DOI: 10.1371/journal.pgen.1006997] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 10/03/2017] [Accepted: 08/24/2017] [Indexed: 02/08/2023] Open
Abstract
Sheep are a key source of meat, milk and fibre for the global livestock sector, and an important biomedical model. Global analysis of gene expression across multiple tissues has aided genome annotation and supported functional annotation of mammalian genes. We present a large-scale RNA-Seq dataset representing all the major organ systems from adult sheep and from several juvenile, neonatal and prenatal developmental time points. The Ovis aries reference genome (Oar v3.1) includes 27,504 genes (20,921 protein coding), of which 25,350 (19,921 protein coding) had detectable expression in at least one tissue in the sheep gene expression atlas dataset. Network-based cluster analysis of this dataset grouped genes according to their expression pattern. The principle of 'guilt by association' was used to infer the function of uncharacterised genes from their co-expression with genes of known function. We describe the overall transcriptional signatures present in the sheep gene expression atlas and assign those signatures, where possible, to specific cell populations or pathways. The findings are related to innate immunity by focusing on clusters with an immune signature, and to the advantages of cross-breeding by examining the patterns of genes exhibiting the greatest expression differences between purebred and crossbred animals. This high-resolution gene expression atlas for sheep is, to our knowledge, the largest transcriptomic dataset from any livestock species to date. It provides a resource to improve the annotation of the current reference genome for sheep, presenting a model transcriptome for ruminants and insight into gene, cell and tissue function at multiple developmental stages.
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Affiliation(s)
- Emily L. Clark
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Stephen J. Bush
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Mary E. B. McCulloch
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Iseabail L. Farquhar
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Rachel Young
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Lucas Lefevre
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Clare Pridans
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Hiu G. Tsang
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Chunlei Wu
- Department of Integrative and Computational Biology, The Scripps Research Institute, La Jolla, CA, United States of America
| | - Cyrus Afrasiabi
- Department of Integrative and Computational Biology, The Scripps Research Institute, La Jolla, CA, United States of America
| | - Mick Watson
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - C. Bruce Whitelaw
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Tom C. Freeman
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - Kim M. Summers
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
- Mater Research Institute and University of Queensland, Translational Research Institute, Woolloongabba, Queensland, Australia
| | - Alan L. Archibald
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
| | - David A. Hume
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, Scotland, United Kingdom
- Mater Research Institute and University of Queensland, Translational Research Institute, Woolloongabba, Queensland, Australia
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19
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MNRR1, a Biorganellar Regulator of Mitochondria. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:6739236. [PMID: 28685009 PMCID: PMC5480048 DOI: 10.1155/2017/6739236] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 04/09/2017] [Indexed: 12/12/2022]
Abstract
The central role of energy metabolism in cellular activities is becoming widely recognized. However, there are many gaps in our knowledge of the mechanisms by which mitochondria evaluate their status and call upon the nucleus to make adjustments. Recently, a protein family consisting of twin CX9C proteins has been shown to play a role in human pathophysiology. We focus here on two family members, the isoforms CHCHD2 (renamed MNRR1) and CHCHD10. The better studied isoform, MNRR1, has the unusual property of functioning in both the mitochondria and the nucleus and of having a different function in each. In the mitochondria, it functions by binding to cytochrome c oxidase (COX), which stimulates respiration. Its binding to COX is promoted by tyrosine-99 phosphorylation, carried out by ABL2 kinase (ARG). In the nucleus, MNRR1 binds to a novel promoter element in COX4I2 and itself, increasing transcription at 4% oxygen. We discuss mutations in both MNRR1 and CHCHD10 found in a number of chronic, mostly neurodegenerative, diseases. Finally, we propose a model of a graded response to hypoxic and oxidative stresses, mediated under different oxygen tensions by CHCHD10, MNRR1, and HIF1, which operate at intermediate and very low oxygen concentrations, respectively.
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20
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Puig-Butille JA, Gimenez-Xavier P, Visconti A, Nsengimana J, Garcia-García F, Tell-Marti G, Escamez MJ, Newton-Bishop J, Bataille V, del Río M, Dopazo J, Falchi M, Puig S. Genomic expression differences between cutaneous cells from red hair color individuals and black hair color individuals based on bioinformatic analysis. Oncotarget 2017; 8:11589-11599. [PMID: 28030792 PMCID: PMC5355288 DOI: 10.18632/oncotarget.14140] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 11/21/2016] [Indexed: 12/11/2022] Open
Abstract
The MC1R gene plays a crucial role in pigmentation synthesis. Loss-of-function MC1R variants, which impair protein function, are associated with red hair color (RHC) phenotype and increased skin cancer risk. Cultured cutaneous cells bearing loss-of-function MC1R variants show a distinct gene expression profile compared to wild-type MC1R cultured cutaneous cells. We analysed the gene signature associated with RHC co-cultured melanocytes and keratinocytes by Protein-Protein interaction (PPI) network analysis to identify genes related with non-functional MC1R variants. From two detected networks, we selected 23 nodes as hub genes based on topological parameters. Differential expression of hub genes was then evaluated in healthy skin biopsies from RHC and black hair color (BHC) individuals. We also compared gene expression in melanoma tumors from individuals with RHC versus BHC. Gene expression in normal skin from RHC cutaneous cells showed dysregulation in 8 out of 23 hub genes (CLN3, ATG10, WIPI2, SNX2, GABARAPL2, YWHA, PCNA and GBAS). Hub genes did not differ between melanoma tumors in RHC versus BHC individuals. The study suggests that healthy skin cells from RHC individuals present a constitutive genomic deregulation associated with the red hair phenotype and identify novel genes involved in melanocyte biology.
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Affiliation(s)
- Joan Anton Puig-Butille
- Biochemistry and Molecular Genetics Department, Melanoma Unit, Hospital Clinic & IDIBAPS, CIBER de Enfermedades Raras (CIBERER), Barcelona, Spain
| | - Pol Gimenez-Xavier
- Dermatology Department, Melanoma Unit, Hospital Clinic & IDIBAPS, CIBER de Enfermedades Raras (CIBERER), Barcelona, Spain
| | - Alessia Visconti
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - Jérémie Nsengimana
- Section of Epidemiology and Biostatistics, Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, UK
| | - Francisco Garcia-García
- Computational Genomics Department, Centro de Investigación Príncipe Felipe (CIPF), Valencia, Spain
| | - Gemma Tell-Marti
- Dermatology Department, Melanoma Unit, Hospital Clinic & IDIBAPS, CIBER de Enfermedades Raras (CIBERER), Barcelona, Spain
| | - Maria José Escamez
- Departamento de Bioingeniería, Universidad Carlos III de Madrid, CIEMAT, IIS-Fundación Jiménez Díaz, CIBER de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Julia Newton-Bishop
- Section of Epidemiology and Biostatistics, Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, UK
| | - Veronique Bataille
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - Marcela del Río
- Departamento de Bioingeniería, Universidad Carlos III de Madrid, CIEMAT, IIS-Fundación Jiménez Díaz, CIBER de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Joaquín Dopazo
- Computational Genomics Department, Centro de Investigación Príncipe Felipe (CIPF), Valencia, Spain
- Functional Genomics Node, (INB) at CIPF, Valencia, Spain
- CIBER de Enfermedades Raras (CIBERER), Valencia, Spain
| | - Mario Falchi
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - Susana Puig
- Dermatology Department, Melanoma Unit, Hospital Clinic & IDIBAPS, CIBER de Enfermedades Raras (CIBERER), Barcelona, Spain
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21
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Zhou ZD, Saw WT, Tan EK. Mitochondrial CHCHD-Containing Proteins: Physiologic Functions and Link with Neurodegenerative Diseases. Mol Neurobiol 2016; 54:5534-5546. [PMID: 27631878 DOI: 10.1007/s12035-016-0099-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 09/02/2016] [Indexed: 12/13/2022]
Abstract
The coiled-coil-helix-coiled-coil-helix domain (CHCHD)-containing proteins are evolutionarily conserved nucleus-encoded small mitochondrial proteins with important functions. So far, nine members have been identified in this protein family. All CHCHD proteins have at least one functional coiled-coil-helix-coiled-coil-helix (CHCH) domain, which is stabilized by two pairs of disulfide bonds between two helices. CHCHD proteins have various important pathophysiological roles in mitochondria and other key cellular processes. Mutations of CHCHD proteins have been associated with various human neurodegenerative diseases. Mutations of CHCHD10 are associated with amyotrophic lateral sclerosis (ALS) and/or frontotemporal lobe dementia (FTD), motor neuron disease, and late-onset spinal muscular atrophy and autosomal dominant mitochondrial myopathy. CHCHD10 stabilizes mitochondrial crista ultrastructure and maintains its integrity. In patients with CHCHD10 mutations, there are abnormal mitochondrial crista structure, deficiencies of respiratory chain complexes, impaired mitochondrial respiration, and multiple mitochondrial DNA (mtDNA) deletions. Recently, CHCHD2 mutations are linked with autosomal dominant and sporadic Parkinson's disease (PD). The CHCHD2 is a multifunctional protein and plays roles in regulation of mitochondrial metabolism, synthesis of respiratory chain components, and modulation of cell apoptosis. With a better understanding of the pathophysiologic roles of CHCHD proteins, they may be potential novel therapeutic targets for human neurodegenerative diseases.
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Affiliation(s)
- Zhi-Dong Zhou
- National Neuroscience Institute of Singapore, 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore. .,Signature Research Program in Neuroscience and Behavioural Disorders, Duke-NUS Graduate Medical School Singapore, 8 College Road, Singapore, 169857, Singapore.
| | - Wuan-Ting Saw
- National Neuroscience Institute of Singapore, 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore
| | - Eng-King Tan
- National Neuroscience Institute of Singapore, 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore. .,Signature Research Program in Neuroscience and Behavioural Disorders, Duke-NUS Graduate Medical School Singapore, 8 College Road, Singapore, 169857, Singapore. .,Department of Neurology, Singapore General Hospital, Outram Road, Singapore, 169608, Singapore.
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22
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Ronchi D, Riboldi G, Del Bo R, Ticozzi N, Scarlato M, Galimberti D, Corti S, Silani V, Bresolin N, Comi GP. CHCHD10 mutations in Italian patients with sporadic amyotrophic lateral sclerosis. Brain 2015; 138:e372. [PMID: 25576308 DOI: 10.1093/brain/awu384] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Dario Ronchi
- 1 Neurology Unit, IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico, Dino Ferrari Centre, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Giulietta Riboldi
- 1 Neurology Unit, IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico, Dino Ferrari Centre, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Roberto Del Bo
- 1 Neurology Unit, IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico, Dino Ferrari Centre, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Nicola Ticozzi
- 2 Department of Neurology and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Dino Ferrari Centre, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Marina Scarlato
- 3 Division of Neuroscience, Department of Neurology and INSPE, San Raffaele Scientific Institute, Milan, Italy
| | - Daniela Galimberti
- 4 Neurodegenerative Disease Unit, Neuroscience Section, Department of Pathophysiology and Transplantation, Dino Ferrari Centre, IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico, Università degli Studi di Milano, Milan, Italy
| | - Stefania Corti
- 1 Neurology Unit, IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico, Dino Ferrari Centre, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Vincenzo Silani
- 2 Department of Neurology and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Dino Ferrari Centre, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Nereo Bresolin
- 1 Neurology Unit, IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico, Dino Ferrari Centre, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Giacomo Pietro Comi
- 1 Neurology Unit, IRCCS Foundation Ca' Granda Ospedale Maggiore Policlinico, Dino Ferrari Centre, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
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23
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Penttilä S, Jokela M, Bouquin H, Saukkonen AM, Toivanen J, Udd B. Late onset spinal motor neuronopathy is caused by mutation inCHCHD10. Ann Neurol 2014; 77:163-72. [DOI: 10.1002/ana.24319] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 10/16/2014] [Accepted: 11/23/2014] [Indexed: 01/09/2023]
Affiliation(s)
- Sini Penttilä
- Neuromuscular Research Center; Tampere University and University Hospital; Tampere
| | - Manu Jokela
- Division of Clinical Neurosciences; Turku University Hospital and University of Turku; Turku
| | - Heidi Bouquin
- Neuromuscular Research Center; Tampere University and University Hospital; Tampere
| | | | - Jari Toivanen
- Department of Neurology; Central Hospital of Northern Karelia; Joensuu
| | - Bjarne Udd
- Neuromuscular Research Center; Tampere University and University Hospital; Tampere
- Folkhälsan Institute of Genetics and Department of Medical Genetics; Haartman Institute; University of Helsinki; Helsinki
- Department of Neurology; Vasa Central Hospital; Vasa Finland
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24
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Ajroud-Driss S, Fecto F, Ajroud K, Lalani I, Calvo SE, Mootha VK, Deng HX, Siddique N, Tahmoush AJ, Heiman-Patterson TD, Siddique T. Mutation in the novel nuclear-encoded mitochondrial protein CHCHD10 in a family with autosomal dominant mitochondrial myopathy. Neurogenetics 2014; 16:1-9. [PMID: 25193783 DOI: 10.1007/s10048-014-0421-1] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 08/21/2014] [Indexed: 12/11/2022]
Abstract
Mitochondrial myopathies belong to a larger group of systemic diseases caused by morphological or biochemical abnormalities of mitochondria. Mitochondrial disorders can be caused by mutations in either the mitochondrial or nuclear genome. Only 5% of all mitochondrial disorders are autosomal dominant. We analyzed DNA from members of the previously reported Puerto Rican kindred with an autosomal dominant mitochondrial myopathy (Heimann-Patterson et al. 1997). Linkage analysis suggested a putative locus on the pericentric region of the long arm of chromosome 22 (22q11). Using the tools of integrative genomics, we established chromosome 22 open reading frame 16 (C22orf16) (later designated as CHCHD10) as the only high-scoring mitochondrial candidate gene in our minimal candidate region. Sequence analysis revealed a double-missense mutation (R15S and G58R) in cis in CHCHD10 which encodes a coiled coil-helix-coiled coil-helix protein of unknown function. These two mutations completely co-segregated with the disease phenotype and were absent in 1,481 Caucasian and 80 Hispanic (including 32 Puerto Rican) controls. Expression profiling showed that CHCHD10 is enriched in skeletal muscle. Mitochondrial localization of the CHCHD10 protein was confirmed using immunofluorescence in cells expressing either wild-type or mutant CHCHD10. We found that the expression of the G58R, but not the R15S, mutation induced mitochondrial fragmentation. Our findings identify a novel gene causing mitochondrial myopathy, thereby expanding the spectrum of mitochondrial myopathies caused by nuclear genes. Our findings also suggest a role for CHCHD10 in the morphologic remodeling of the mitochondria.
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Affiliation(s)
- Senda Ajroud-Driss
- Division of Neuromuscular Medicine, The Ken and Ruth Davee Department of Neurology and Clinical Neurosciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA,
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25
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Bannwarth S, Ait-El-Mkadem S, Chaussenot A, Genin EC, Lacas-Gervais S, Fragaki K, Berg-Alonso L, Kageyama Y, Serre V, Moore DG, Verschueren A, Rouzier C, Le Ber I, Augé G, Cochaud C, Lespinasse F, N'Guyen K, de Septenville A, Brice A, Yu-Wai-Man P, Sesaki H, Pouget J, Paquis-Flucklinger V. A mitochondrial origin for frontotemporal dementia and amyotrophic lateral sclerosis through CHCHD10 involvement. ACTA ACUST UNITED AC 2014; 137:2329-45. [PMID: 24934289 DOI: 10.1093/brain/awu138] [Citation(s) in RCA: 337] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Mitochondrial DNA instability disorders are responsible for a large clinical spectrum, among which amyotrophic lateral sclerosis-like symptoms and frontotemporal dementia are extremely rare. We report a large family with a late-onset phenotype including motor neuron disease, cognitive decline resembling frontotemporal dementia, cerebellar ataxia and myopathy. In all patients, muscle biopsy showed ragged-red and cytochrome c oxidase-negative fibres with combined respiratory chain deficiency and abnormal assembly of complex V. The multiple mitochondrial DNA deletions found in skeletal muscle revealed a mitochondrial DNA instability disorder. Patient fibroblasts present with respiratory chain deficiency, mitochondrial ultrastructural alterations and fragmentation of the mitochondrial network. Interestingly, expression of matrix-targeted photoactivatable GFP showed that mitochondrial fusion was not inhibited in patient fibroblasts. Using whole-exome sequencing we identified a missense mutation (c.176C>T; p.Ser59Leu) in the CHCHD10 gene that encodes a coiled-coil helix coiled-coil helix protein, whose function is unknown. We show that CHCHD10 is a mitochondrial protein located in the intermembrane space and enriched at cristae junctions. Overexpression of a CHCHD10 mutant allele in HeLa cells led to fragmentation of the mitochondrial network and ultrastructural major abnormalities including loss, disorganization and dilatation of cristae. The observation of a frontotemporal dementia-amyotrophic lateral sclerosis phenotype in a mitochondrial disease led us to analyse CHCHD10 in a cohort of 21 families with pathologically proven frontotemporal dementia-amyotrophic lateral sclerosis. We identified the same missense p.Ser59Leu mutation in one of these families. This work opens a novel field to explore the pathogenesis of the frontotemporal dementia-amyotrophic lateral sclerosis clinical spectrum by showing that mitochondrial disease may be at the origin of some of these phenotypes.
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Affiliation(s)
- Sylvie Bannwarth
- 1 IRCAN, UMR CNRS 7284/INSERM U1081/UNS, School of Medicine, Nice Sophia-Antipolis University, France 2 Department of Medical Genetics, National Centre for Mitochondrial Diseases, Nice Teaching Hospital, France
| | - Samira Ait-El-Mkadem
- 1 IRCAN, UMR CNRS 7284/INSERM U1081/UNS, School of Medicine, Nice Sophia-Antipolis University, France 2 Department of Medical Genetics, National Centre for Mitochondrial Diseases, Nice Teaching Hospital, France
| | - Annabelle Chaussenot
- 1 IRCAN, UMR CNRS 7284/INSERM U1081/UNS, School of Medicine, Nice Sophia-Antipolis University, France 2 Department of Medical Genetics, National Centre for Mitochondrial Diseases, Nice Teaching Hospital, France
| | - Emmanuelle C Genin
- 1 IRCAN, UMR CNRS 7284/INSERM U1081/UNS, School of Medicine, Nice Sophia-Antipolis University, France
| | - Sandra Lacas-Gervais
- 3 Joint Centre for Applied Electron Microscopy, Nice Sophia-Antipolis University, France
| | - Konstantina Fragaki
- 1 IRCAN, UMR CNRS 7284/INSERM U1081/UNS, School of Medicine, Nice Sophia-Antipolis University, France 2 Department of Medical Genetics, National Centre for Mitochondrial Diseases, Nice Teaching Hospital, France
| | - Laetitia Berg-Alonso
- 1 IRCAN, UMR CNRS 7284/INSERM U1081/UNS, School of Medicine, Nice Sophia-Antipolis University, France
| | - Yusuke Kageyama
- 4 Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Valérie Serre
- 5 UMR7592 CNRS, Jacques Monod Institute, Paris Diderot University, France
| | - David G Moore
- 6 Wellcome Trust Centre for Mitochondrial Research, Institute of Genetic Medicine, International Centre for Life, Newcastle University, Newcastle upon Tyne NE1 3BZ, UK
| | - Annie Verschueren
- 7 Department of Neurology, Timone Hospital, Marseille Teaching Hospital, France
| | - Cécile Rouzier
- 1 IRCAN, UMR CNRS 7284/INSERM U1081/UNS, School of Medicine, Nice Sophia-Antipolis University, France 2 Department of Medical Genetics, National Centre for Mitochondrial Diseases, Nice Teaching Hospital, France
| | - Isabelle Le Ber
- 8 Sorbonne Université, UPMC Univ Paris 06, UM75, Inserm U1127, Cnrs UMR7225, Institut du Cerveau et de la Moelle épinière (ICM), F-75013 Paris, France9 National Reference Centre on Rare Dementias, AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Gaëlle Augé
- 1 IRCAN, UMR CNRS 7284/INSERM U1081/UNS, School of Medicine, Nice Sophia-Antipolis University, France 2 Department of Medical Genetics, National Centre for Mitochondrial Diseases, Nice Teaching Hospital, France
| | - Charlotte Cochaud
- 2 Department of Medical Genetics, National Centre for Mitochondrial Diseases, Nice Teaching Hospital, France
| | - Françoise Lespinasse
- 1 IRCAN, UMR CNRS 7284/INSERM U1081/UNS, School of Medicine, Nice Sophia-Antipolis University, France
| | - Karine N'Guyen
- 10 Department of Medical Genetics, Timone Hospital, Marseille Teaching Hospital, France
| | - Anne de Septenville
- 8 Sorbonne Université, UPMC Univ Paris 06, UM75, Inserm U1127, Cnrs UMR7225, Institut du Cerveau et de la Moelle épinière (ICM), F-75013 Paris, France
| | - Alexis Brice
- 8 Sorbonne Université, UPMC Univ Paris 06, UM75, Inserm U1127, Cnrs UMR7225, Institut du Cerveau et de la Moelle épinière (ICM), F-75013 Paris, France
| | - Patrick Yu-Wai-Man
- 6 Wellcome Trust Centre for Mitochondrial Research, Institute of Genetic Medicine, International Centre for Life, Newcastle University, Newcastle upon Tyne NE1 3BZ, UK
| | - Hiromi Sesaki
- 4 Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Jean Pouget
- 7 Department of Neurology, Timone Hospital, Marseille Teaching Hospital, France
| | - Véronique Paquis-Flucklinger
- 1 IRCAN, UMR CNRS 7284/INSERM U1081/UNS, School of Medicine, Nice Sophia-Antipolis University, France 2 Department of Medical Genetics, National Centre for Mitochondrial Diseases, Nice Teaching Hospital, France
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26
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Varvagiannis K, Papoulidis I, Koromila T, Kefalas K, Ziegler M, Liehr T, Petersen MB, Gyftodimou Y, Manolakos E. De novo 393 kb microdeletion of 7p11.2 characterized by aCGH in a boy with psychomotor retardation and dysmorphic features. Meta Gene 2014; 2:274-82. [PMID: 25606410 PMCID: PMC4287824 DOI: 10.1016/j.mgene.2014.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/08/2014] [Accepted: 03/17/2014] [Indexed: 01/03/2023] Open
Abstract
We report on a 27 month old boy presenting with psychomotor delay and dysmorphic features, mainly mild facial asymmetry, prominent cup-shaped ears, long eyelashes, open mouth appearance and slight abnormalities of the hands and feet. Array comparative genomic hybridization revealed a 393 kb microdeletion in 7p11.2. We discuss the possible involvement of CHCHD2, GBAS, MRPS17, SEPT14 and PSPH on our patient's phenotype. Additionally, we studied the expression of two other genes deleted in the patient, CCT6A and SUMF2, for which there is scarce data in the literature. Based on current knowledge and the de novo occurrence of this finding in our proband we presume that the aberration is likely to be pathogenic in our case. However, a single gene disorder, elsewhere in the genome or in this very region cannot be ruled out. Further elucidation of the properties of this chromosomal region, as well as of the role of the genes involved will be needed in order to draw safe conclusions regarding the association of the chromosomal deletion with the patient's features. We report in detail the clinical and cytogenetic findings of a 27-month old male. We compare our findings with current literature and online databases. We discuss the possible involvement of certain genes in our patient’s phenotype.
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Affiliation(s)
| | | | - Theodora Koromila
- Laboratory of Human Genetics, Department of Biology, University of Athens, Athens, Greece
| | | | - Monika Ziegler
- Institute of Human Genetics Anthropology, Jena University Hospital, Jena, Germany
| | - Thomas Liehr
- Institute of Human Genetics Anthropology, Jena University Hospital, Jena, Germany
| | | | | | - Emmanouil Manolakos
- Eurogenetica S.A., Laboratory of Genetics, Athens-Thessaloniki, Greece ; Cattedra di Genetica Medica, Ospedale Binaghi, Cagliari, Italy
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27
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Yue X, Hariri DJ, Caballero B, Zhang S, Bartlett MJ, Kaut O, Mount DW, Wüllner U, Sherman SJ, Falk T. Comparative study of the neurotrophic effects elicited by VEGF-B and GDNF in preclinical in vivo models of Parkinson's disease. Neuroscience 2013; 258:385-400. [PMID: 24291725 DOI: 10.1016/j.neuroscience.2013.11.038] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 11/20/2013] [Accepted: 11/20/2013] [Indexed: 12/15/2022]
Abstract
Vascular endothelial growth factor B (VEGF-B) has recently been shown to be a promising novel neuroprotective agent for several neurodegenerative conditions. In the current study we extended previous work on neuroprotective potential for Parkinson's disease (PD) by testing an expanded dose range of VEGF-B (1 and 10 μg) and directly comparing both neuroprotective and neurorestorative effects of VEGF-B in progressive unilateral 6-hydroxydopamine (6-OHDA) PD models to a single dose of glial cell line-derived neurotrophic factor (GDNF, 10 μg), that has been established by several groups as a standard in both preclinical PD models. In the amphetamine-induced rotational tests the treatment with 1 and 10 μg VEGF-B resulted in significantly improved motor function of 6-OHDA-lesioned rats compared to vehicle-treated 6-OHDA-lesioned rats in the neuroprotection paradigm. Both doses of VEGF-B caused an increase in tyrosine hydroxylase (TH)-positive cell and fiber count in the substantia nigra (SN) and striatum in the neuroprotective experiment. The effect size was comparable to the effects seen with GDNF. In the neurorestoration paradigm, VEGF-B injection had no significant effect in either the behavioral or the immunohistochemical analyses, whereas GDNF injection significantly improved the amphetamine-induced rotational behavior and reduced TH-positive neuronal cell loss in the SN. We also present a strong positive correlation (p=1.9e-50) of the expression of VEGF-B with nuclear-encoded mitochondrial genes involved in fatty acid metabolism in rat midbrain, pointing to the mitochondria as a site of action of VEGF-B. GDNF showed a positive correlation with nuclear-encoded mitochondrial genes that was not nearly as strong (p=0.018). VEGF-B counteracted rotenone-induced reduction of (a) fatty acid transport protein 1 and 4 levels and (b) both Akt protein and phosphorylation levels in SH-SY5Y cells. We further verified VEGF-B expression in the human SN pars compacta of healthy controls and PD patients, in neuronal cells that show co-expression with neuromelanin. These results have demonstrated that VEGF-B has potential as a neuroprotective agent for PD therapy and should be further investigated.
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Affiliation(s)
- X Yue
- Department of Neurology, University of Arizona, Tucson, AZ 85724, USA
| | - D J Hariri
- Graduate Interdisciplinary Program in Physiological Sciences, University of Arizona, Tucson, AZ 85724, USA
| | - B Caballero
- Graduate Interdisciplinary Program in Physiological Sciences, University of Arizona, Tucson, AZ 85724, USA
| | - S Zhang
- Department of Neurology, University of Arizona, Tucson, AZ 85724, USA
| | - M J Bartlett
- Department of Neurology, University of Arizona, Tucson, AZ 85724, USA
| | - O Kaut
- Department of Neurology, University of Bonn, 53105 Bonn, Germany
| | - D W Mount
- Bioinformatics Shared Service, Arizona Cancer Center, University of Arizona, Tucson, AZ 85724, USA
| | - U Wüllner
- Department of Neurology, University of Bonn, 53105 Bonn, Germany
| | - S J Sherman
- Department of Neurology, University of Arizona, Tucson, AZ 85724, USA
| | - T Falk
- Department of Neurology, University of Arizona, Tucson, AZ 85724, USA; Graduate Interdisciplinary Program in Physiological Sciences, University of Arizona, Tucson, AZ 85724, USA.
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28
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Napoli E, Wong S, Hung C, Ross-Inta C, Bomdica P, Giulivi C. Defective mitochondrial disulfide relay system, altered mitochondrial morphology and function in Huntington's disease. Hum Mol Genet 2013; 22:989-1004. [PMID: 23197653 PMCID: PMC8482967 DOI: 10.1093/hmg/dds503] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 11/07/2012] [Accepted: 11/26/2012] [Indexed: 01/09/2024] Open
Abstract
A number of studies have been conducted that link mitochondrial dysfunction (MD) to Huntington's disease (HD); however, contradicting results had resulted in a lack of a clear mechanism that links expression of mutant Huntingtin protein and MD. Mouse homozygous (HM) and heterozygous (HT) mutant striatal cells with two or one allele encoding for a mutant huntingtin protein with 111 polyGln repeats showed a significant impairment of the mitochondrial disulfide relay system (MDRS). This system (consisting of two proteins, Gfer and Mia40) is involved in the mitochondrial import of Cys-rich proteins. The Gfer-to-Mia40 ratio was significantly altered in HM cells compared with controls, along with the expression of mitochondrial proteins considered substrates of the MDRS. In progenitors and differentiated neuron-like HM cells, impairment of MDRS were accompanied by deficient oxidative phosphorylation, Complex I, IV and V activities, decreased mtDNA copy number and transcripts, accumulation of mtDNA deletions and changes in mitochondrial morphology, consistent with other MDRS-deficient biological models, thus providing a framework for the energy deficits observed in this HD model. The majority (>90%) of the mitochondrial outcomes exhibited a gene-dose dependency with the expression of mutant Htt. Finally, decreases in the mtDNA copy number, along with the accumulation of mtDNA deletions, provide a mechanism for the progressive neurodegeneration observed in HD patients.
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Affiliation(s)
- Eleonora Napoli
- Department of Molecular Biosciences, University of California
Davis, Davis, CA 95616, USA
| | - Sarah Wong
- Department of Molecular Biosciences, University of California
Davis, Davis, CA 95616, USA
| | - Connie Hung
- Department of Molecular Biosciences, University of California
Davis, Davis, CA 95616, USA
| | - Catherine Ross-Inta
- Department of Molecular Biosciences, University of California
Davis, Davis, CA 95616, USA
| | - Prithvi Bomdica
- Department of Molecular Biosciences, University of California
Davis, Davis, CA 95616, USA
| | - Cecilia Giulivi
- Department of Molecular Biosciences, University of California
Davis, Davis, CA 95616, USA
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29
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Freeman TC, Ivens A, Baillie JK, Beraldi D, Barnett MW, Dorward D, Downing A, Fairbairn L, Kapetanovic R, Raza S, Tomoiu A, Alberio R, Wu C, Su AI, Summers KM, Tuggle CK, Archibald AL, Hume DA. A gene expression atlas of the domestic pig. BMC Biol 2012; 10:90. [PMID: 23153189 PMCID: PMC3814290 DOI: 10.1186/1741-7007-10-90] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Accepted: 10/23/2012] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND This work describes the first genome-wide analysis of the transcriptional landscape of the pig. A new porcine Affymetrix expression array was designed in order to provide comprehensive coverage of the known pig transcriptome. The new array was used to generate a genome-wide expression atlas of pig tissues derived from 62 tissue/cell types. These data were subjected to network correlation analysis and clustering. RESULTS The analysis presented here provides a detailed functional clustering of the pig transcriptome where transcripts are grouped according to their expression pattern, so one can infer the function of an uncharacterized gene from the company it keeps and the locations in which it is expressed. We describe the overall transcriptional signatures present in the tissue atlas, where possible assigning those signatures to specific cell populations or pathways. In particular, we discuss the expression signatures associated with the gastrointestinal tract, an organ that was sampled at 15 sites along its length and whose biology in the pig is similar to human. We identify sets of genes that define specialized cellular compartments and region-specific digestive functions. Finally, we performed a network analysis of the transcription factors expressed in the gastrointestinal tract and demonstrate how they sub-divide into functional groups that may control cellular gastrointestinal development. CONCLUSIONS As an important livestock animal with a physiology that is more similar than mouse to man, we provide a major new resource for understanding gene expression with respect to the known physiology of mammalian tissues and cells. The data and analyses are available on the websites http://biogps.org and http://www.macrophages.com/pig-atlas.
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Affiliation(s)
- Tom C Freeman
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK
| | - Alasdair Ivens
- Fios Genomics Ltd, ETTC, King's Buildings, Edinburgh EH9 3JL UK,Centre for Immunity, Infection and Evolution, University of Edinburgh Ashworth
Labs, King's Buildings, West Mains Road, Edinburgh EH9 3JT
| | - J Kenneth Baillie
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK
| | - Dario Beraldi
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK,Cancer Research UK, Cambridge Research Institute, Li Ka Shing Centre, Robinson
way, Cambridge, CB2 0RE, UK
| | - Mark W Barnett
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK
| | - David Dorward
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK
| | - Alison Downing
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK
| | - Lynsey Fairbairn
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK
| | - Ronan Kapetanovic
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK
| | - Sobia Raza
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK
| | - Andru Tomoiu
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK
| | - Ramiro Alberio
- Division of Animal Sciences, School of Biosciences, University of Nottingham,
Sutton Bonington, Leicestershire LE12 5RD UK
| | - Chunlei Wu
- Department of Molecular and Experimental Medicine, The Scripps Research Institute,
MEM-216, 10550 North Torrey Pines Road, La Jolla, CA 92037 USA
| | - Andrew I Su
- Department of Molecular and Experimental Medicine, The Scripps Research Institute,
MEM-216, 10550 North Torrey Pines Road, La Jolla, CA 92037 USA
| | - Kim M Summers
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK
| | | | - Alan L Archibald
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK
| | - David A Hume
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of
Edinburgh, Easter Bush, EH25 9PS, UK
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30
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Martin-Perez M, Fernandez-Borras J, Ibarz A, Millan-Cubillo A, Felip O, de Oliveira E, Blasco J. New insights into fish swimming: a proteomic and isotopic approach in gilthead sea bream. J Proteome Res 2012; 11:3533-47. [PMID: 22681184 DOI: 10.1021/pr3002832] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Moderate exercise enhances fish growth, although underlying physiological mechanisms are not fully known. Here we performed a proteomic and metabolic study in white (WM) and red (RM) muscle of gilthead sea bream juveniles swimming at 1.5 body lengths per second. Continuous swimming for four weeks enhanced fish growth without increasing food intake. Exercise affected muscle energy stores by decreasing lipid and glycogen contents in WM and RM, respectively. Protein synthesis capacity (RNA/protein), energy use (estimated by lipid-δ(13)C and glycogen-δ(13)C), and enzymatic aerobic capacity increased in WM, while protein turnover (expressed by δ(15)N-fractionation) did not change. RM showed no changes in any of these parameters. 2D-PAGE analysis showed that almost 15% of sarcoplasmic protein spots from WM and RM differed in response to exercise, most being over-expressed in WM and under-expressed in RM. Protein identification by MALDI-TOF/TOF-MS and LC-MS/MS revealed exercise-induced enhancement of several pathways in WM (carbohydrate catabolism, protein synthesis, muscle contraction, and detoxification) and under-expression of others in RM (energy production, muscle contraction, and homeostatic processes). The mechanism underpinning the phenotypic response to exercise sheds light on the adaptive processes of fish muscles, being the sustained-moderate swimming induced in gilthead sea bream achieved mainly by WM, thus reducing the work load of RM and improving swimming performance and food conversion efficiency.
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Affiliation(s)
- Miguel Martin-Perez
- Xarxa de Referencia de Recerca i Desenvolupament en Aqüicultura de la Generalitat de Catalunya, Departament de Fisiologia i Immunologia Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain.
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31
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Chen HY, Zhu BH, Zhang CH, Yang DJ, Peng JJ, Chen JH, Liu FK, He YL. High CpG island methylator phenotype is associated with lymph node metastasis and prognosis in gastric cancer. Cancer Sci 2012; 103:73-9. [PMID: 22017425 PMCID: PMC11164149 DOI: 10.1111/j.1349-7006.2011.02129.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Several studies have found that the promoter CpG island is frequently methylated in gastric cancer. The CpG island methylator phenotype (CIMP) defines concordant methylation of multiple promoter CpG island loci in a subset of gastric cancer. However, the relationship between CIMP and lymph node metastasis in gastric cancer is unknown. Our study aimed to characterize the role of CIMP in lymph node metastasis. Clinical specimens from 120 patients were analyzed and PCR was used to detect the methylation status of five genes (ALX4, TMEFF2, CHCHD10, IGFBP3, and NPR1). We measured the level of mRNA for the five genes by real-time RT-PCR. Microsatellite instability and Helicobacter pylori infection status were assayed by capillary electrophoresis and real-time PCR, respectively. DNA methylation in the five genes was correlated with low expression of the respective mRNA. With CIMP as the dependent variable, CIMP-high gastric cancer tended to show more distant lymph node metastasis, higher pathologic tumor classification, more pathologic metastasis, and higher pathologic TNM status. Microsatellite instability and H. pylori status were not significant predictors of prognosis. CIMP-high gastric cancer showed significantly worse survival compared with that of CIMP-low/CIMP-negative gastric cancer (P < 0.001). Our results show that there is an association between CIMP status and lymph node metastasis in gastric cancer and CIMP-high was an independent prognostic factor.
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Affiliation(s)
- Hua-Yun Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Sobinoff AP, Mahony M, Nixon B, Roman SD, McLaughlin EA. Understanding the Villain: DMBA-Induced Preantral Ovotoxicity Involves Selective Follicular Destruction and Primordial Follicle Activation through PI3K/Akt and mTOR Signaling. Toxicol Sci 2011; 123:563-75. [DOI: 10.1093/toxsci/kfr195] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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