1
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Abdul-Raheem J, Nikkola E, Chen Z, Rohena L. Expanding the phenotype of Harel-Yoon syndrome: A case report suggesting a genotype/phenotype correlation. Am J Med Genet A 2024:e63647. [PMID: 38877820 DOI: 10.1002/ajmg.a.63647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 02/19/2024] [Accepted: 04/18/2024] [Indexed: 06/16/2024]
Abstract
Harel-Yoon syndrome (HAYOS) is a unique neurodevelopmental genetic disorder characterized by hypotonia, spasticity, intellectual disability, hypertrophic cardiomyopathy, and global developmental delay. It primarily results from mutations in the ATAD3A gene, pivotal for mitochondrial function. This report presents a 5-year-old girl with HAYOS harboring a de novo heterozygous variant c.1064G>A; (p.G355D) in ATAD3A. Her clinical profile includes delayed milestones, hypotonia, spastic quadriplegia, and ptosis. Notably, dermatologic anomalies such as hypopigmentation, café au lait macules, and freckling are observed, expanding the known phenotype of HAYOS. The inclusion of dermatologic features challenges our understanding of the syndrome and emphasizes the importance of further research to elucidate the molecular connections between ATAD3A mutations and dermatologic manifestations.
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Affiliation(s)
| | | | | | - Luis Rohena
- Division of Medical Genetics, Department of Pediatrics, Brooke Army Medical Center, Fort Sam Houston, Texas, USA
- Department of Pediatrics, UT Health San Antonio, Long School of Medicine, San Antonio, Texas, USA
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2
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Waters ER, Bezanilla M, Vierling E. ATAD3 Proteins: Unique Mitochondrial Proteins Essential for Life in Diverse Eukaryotic Lineages. PLANT & CELL PHYSIOLOGY 2024; 65:493-502. [PMID: 37859594 DOI: 10.1093/pcp/pcad122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/05/2023] [Accepted: 10/10/2023] [Indexed: 10/21/2023]
Abstract
ATPase family AAA domain-containing 3 (ATAD3) proteins are unique mitochondrial proteins that arose deep in the eukaryotic lineage but that are surprisingly absent in Fungi and Amoebozoa. These ∼600-amino acid proteins are anchored in the inner mitochondrial membrane and are essential in metazoans and Arabidopsis thaliana. ATAD3s comprise a C-terminal ATPases Associated with a variety of cellular Activities (AAA+) matrix domain and an ATAD3_N domain, which is located primarily in the inner membrane space but potentially extends to the cytosol to interact with the ER. Sequence and structural alignments indicate that ATAD3 proteins are most similar to classic chaperone unfoldases in the AAA+ family, suggesting that they operate in mitochondrial protein quality control. A. thaliana has four ATAD3 genes in two distinct clades that appear first in the seed plants, and both clades are essential for viability. The four genes are generally coordinately expressed, and transcripts are highest in growing apices and imbibed seeds. Plants with disrupted ATAD3 have reduced growth, aberrant mitochondrial morphology, diffuse nucleoids and reduced oxidative phosphorylation complex I. These and other pleiotropic phenotypes are also observed in ATAD3 mutants in metazoans. Here, we discuss the distribution of ATAD3 proteins as they have evolved in the plant kingdom, their unique structure, what we know about their function in plants and the challenges in determining their essential roles in mitochondria.
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Affiliation(s)
- Elizabeth R Waters
- Department of Biology, San Diego State University, 5500 Campanille Dr., San Diego, CA 92182, USA
| | - Magdalena Bezanilla
- Department of Biological Sciences, Dartmouth College, 78 College St., Hanover, NH 03755, USA
| | - Elizabeth Vierling
- Department of Biochemistry & Molecular Biology, University of Massachusetts Amherst, 240 Thatcher Road, Amherst, MA 01003, USA
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3
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Taha MS, Ahmadian MR. Fragile X Messenger Ribonucleoprotein Protein and Its Multifunctionality: From Cytosol to Nucleolus and Back. Biomolecules 2024; 14:399. [PMID: 38672417 PMCID: PMC11047961 DOI: 10.3390/biom14040399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/17/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024] Open
Abstract
Silencing of the fragile X messenger ribonucleoprotein 1 (FMR1) gene and a consequent lack of FMR protein (FMRP) synthesis are associated with fragile X syndrome, one of the most common inherited intellectual disabilities. FMRP is a multifunctional protein that is involved in many cellular functions in almost all subcellular compartments under both normal and cellular stress conditions in neuronal and non-neuronal cell types. This is achieved through its trafficking signals, nuclear localization signal (NLS), nuclear export signal (NES), and nucleolar localization signal (NoLS), as well as its RNA and protein binding domains, and it is modulated by various post-translational modifications such as phosphorylation, ubiquitination, sumoylation, and methylation. This review summarizes the recent advances in understanding the interaction networks of FMRP with a special focus on FMRP stress-related functions, including stress granule formation, mitochondrion and endoplasmic reticulum plasticity, ribosome biogenesis, cell cycle control, and DNA damage response.
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Affiliation(s)
- Mohamed S. Taha
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany;
- Research on Children with Special Needs Department, Institute of Medical Research and Clinical Studies, National Research Centre, Cairo 12622, Egypt
| | - Mohammad Reza Ahmadian
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany;
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4
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Basei FL, E Silva IR, Dias PRF, Ferezin CC, Peres de Oliveira A, Issayama LK, Moura LAR, da Silva FR, Kobarg J. The Mitochondrial Connection: The Nek Kinases' New Functional Axis in Mitochondrial Homeostasis. Cells 2024; 13:473. [PMID: 38534317 DOI: 10.3390/cells13060473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/28/2024] Open
Abstract
Mitochondria provide energy for all cellular processes, including reactions associated with cell cycle progression, DNA damage repair, and cilia formation. Moreover, mitochondria participate in cell fate decisions between death and survival. Nek family members have already been implicated in DNA damage response, cilia formation, cell death, and cell cycle control. Here, we discuss the role of several Nek family members, namely Nek1, Nek4, Nek5, Nek6, and Nek10, which are not exclusively dedicated to cell cycle-related functions, in controlling mitochondrial functions. Specifically, we review the function of these Neks in mitochondrial respiration and dynamics, mtDNA maintenance, stress response, and cell death. Finally, we discuss the interplay of other cell cycle kinases in mitochondrial function and vice versa. Nek1, Nek5, and Nek6 are connected to the stress response, including ROS control, mtDNA repair, autophagy, and apoptosis. Nek4, in turn, seems to be related to mitochondrial dynamics, while Nek10 is involved with mitochondrial metabolism. Here, we propose that the participation of Neks in mitochondrial roles is a new functional axis for the Nek family.
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Affiliation(s)
- Fernanda L Basei
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas 13083-871, Brazil
| | - Ivan Rosa E Silva
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas 13083-871, Brazil
| | - Pedro R Firmino Dias
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas 13083-871, Brazil
| | - Camila C Ferezin
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas 13083-871, Brazil
| | | | - Luidy K Issayama
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas 13083-871, Brazil
| | - Livia A R Moura
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas 13083-871, Brazil
| | | | - Jörg Kobarg
- Faculty of Pharmaceutical Sciences, University of Campinas, Campinas 13083-871, Brazil
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5
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Jiang T, Li N, Xu H, Sun L, Zhang Y, Luo Q, Yang L. Identification of ATAD3A as a key regulator in non-small cell lung cancer by promoting STAT3-induced cell proliferation and tumor angiogenesis. Mol Carcinog 2024; 63:510-523. [PMID: 38050826 DOI: 10.1002/mc.23667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 11/22/2023] [Accepted: 11/24/2023] [Indexed: 12/07/2023]
Abstract
Malignant proliferation and abundant angiogenesis are major causes of lung adenocarcinoma (LUAD) with high morbidity and mortality. Therefore, the exploration of the key regulatory mechanisms of malignant proliferation and angiogenesis in LUAD provides an opportunity for the development of targeted precision therapy. In this study, we found that the high expression of ATPase family AAA domain-containing protein 3A (ATAD3A) in LUAD was positively associated with the poor survival of patients, while its high expression was positively associated with the angiogenesis of LUAD. Further knockdown of ATAD3A in LUAD significantly inhibited cell proliferation and suppressed expression of vascular endothelial growth factor A, FGF-2, ANG-1, and TGF-β. The opposite effect was observed with ATAD3A overexpression. Furthermore, ATAD3A knockdown significantly inhibited tumor growth and angiogenesis in an in vivo subcutaneous xenograft tumor model. Mechanistic studies suggest that ATAD3A may promote signal transducer and activator of transcription 3 activation, a key signal regulating lung cancer cell proliferation and transcriptional secretion of proangiogenic factors. Therefore, targeted inhibition of ATAD3A may be an effective strategy for LUAD therapy, and ATAD3A may be a potential biomarker for predicting malignant progression.
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Affiliation(s)
- Tao Jiang
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, Zhejiang, China
| | - Ning Li
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, Zhejiang, China
| | - Hao Xu
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Li Sun
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, Zhejiang, China
| | - Ying Zhang
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, Zhejiang, China
| | - Qian Luo
- Department of Respiratory and Critical Care Medicine, The Hospital of Xinjiang Production and Construction Corps, Urumqi, Xinjiang, China
| | - Li Yang
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, Zhejiang, China
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Gaudó P, de Tomás-Mateo E, Garrido-Pérez N, Santana A, Ruiz-Pesini E, Montoya J, Bayona-Bafaluy P. "ATAD3C regulates ATAD3A assembly and function in the mitochondrial membrane". Free Radic Biol Med 2024; 211:114-126. [PMID: 38092275 DOI: 10.1016/j.freeradbiomed.2023.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 11/28/2023] [Accepted: 12/07/2023] [Indexed: 12/21/2023]
Abstract
Mitochondrial ATAD3A is an ATPase Associated with diverse cellular Activities (AAA) domain containing enzyme, involved in the structural organization of the inner mitochondrial membrane and of increasing importance in childhood disease. In humans, two ATAD3A paralogs arose by gene duplication during evolution: ATAD3B and ATAD3C. Here we investigate the cellular activities of the ATAD3C paralog that has been considered a pseudogene. We detected unique ATAD3C peptides in HEK 293T cells, with expression similar to that in human tissues, and showed that it is an integral membrane protein that exposes its carboxy-terminus to the intermembrane space. Overexpression of ATAD3C, but not of ATAD3A, in fibroblasts caused a decrease in cell proliferation and oxygen consumption rate, and an increase of cellular ROS. This was due to the incorporation of ATAD3C monomers in ATAD3A complex in the mitochondrial membrane reducing its size. Consistent with a negative regulation of ATAD3A function in mitochondrial membrane organization, ATAD3C expression led to increased accumulation of respiratory chain dimeric CIII in the inner membrane, to the detriment to that assembled in respiratory supercomplexes. Our results demonstrate a negative dominant role of the ATAD3C paralog with implications for mitochondrial OXPHOS function and suggest that its expression regulates ATAD3A in the cell.
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Affiliation(s)
- Paula Gaudó
- Biochemistry and Molecular Biology Department. Universidad de Zaragoza, 50009- and 50013, Zaragoza, Spain
| | - Elena de Tomás-Mateo
- Biochemistry and Molecular Biology Department. Universidad de Zaragoza, 50009- and 50013, Zaragoza, Spain
| | - Nuria Garrido-Pérez
- Biochemistry and Molecular Biology Department. Universidad de Zaragoza, 50009- and 50013, Zaragoza, Spain; Institute for Health Research (IIS) de Aragón, 50009, Zaragoza, Spain; Rare Diseases Networking Biomedical Research Centre (CIBERER), 28029, Madrid, Spain; Institute for Biocomputation and Physics of Complex Systems, University of Zaragoza, 50018, Zaragoza, Spain
| | - Alfredo Santana
- Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, 35001, Las Palmas de Gran Canaria, Spain; Clinical Genetics Unit, Complejo Hospitarlario Universitario Insular-Materno Infantil de Las Palamas de Gran Canaria, 35016, Las Palmas de Gran Canaria, Spain
| | - Eduardo Ruiz-Pesini
- Institute for Health Research (IIS) de Aragón, 50009, Zaragoza, Spain; Rare Diseases Networking Biomedical Research Centre (CIBERER), 28029, Madrid, Spain.
| | - Julio Montoya
- Biochemistry and Molecular Biology Department. Universidad de Zaragoza, 50009- and 50013, Zaragoza, Spain; Institute for Health Research (IIS) de Aragón, 50009, Zaragoza, Spain; Rare Diseases Networking Biomedical Research Centre (CIBERER), 28029, Madrid, Spain
| | - Pilar Bayona-Bafaluy
- Biochemistry and Molecular Biology Department. Universidad de Zaragoza, 50009- and 50013, Zaragoza, Spain; Institute for Health Research (IIS) de Aragón, 50009, Zaragoza, Spain; Rare Diseases Networking Biomedical Research Centre (CIBERER), 28029, Madrid, Spain; Institute for Biocomputation and Physics of Complex Systems, University of Zaragoza, 50018, Zaragoza, Spain.
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7
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Fang Y, Yang W, Wu L, Yao L, Cao X, Chen H. An aging-related gene signature to predict the prognosis of hepatocellular carcinoma. Medicine (Baltimore) 2023; 102:e36715. [PMID: 38134103 PMCID: PMC10735142 DOI: 10.1097/md.0000000000036715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 11/28/2023] [Indexed: 12/24/2023] Open
Abstract
Aging increases the susceptibility of various diseases, including hepatocellular carcinoma (HCC). This study aimed to establish an aging-related prognostic model for HCC and to investigate the role of aging-related genes in HCC progression. Transcriptome and clinical information of HCC cases were obtained from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) databases. Aging-related prognostic genes were identified through univariate Cox regression analysis, protein-protein interaction analysis, and least absolute shrinkage and selection operator (LASSO) analysis. An aging-related risk signature was then constructed, including LDHA, MMP12, ATAD3A, CD8A, TPI1, CST3, and TPM1. The risk score was inversely associated with the overall survival of patients with HCC and correlated well with known prognostic factors. The area under the curve of 1-, 3-, and 5-year survival in the training dataset was 0.83, 0.83, and 0.84, respectively. Univariate and multivariate cox regression analysis verified that the aging-related risk signature independently predicted the overall survival in HCC. To increase the clinical utility of the prognostic model, a nomogram was developed by incorporating the risk score with key clinical features. Finally, single-cell transcriptomes of HCC were analyzed to elucidate the expression pattern of the prognostic genes across different tissues, pathologic stages, and cell types. Collectively, the aging-related prognostic model shed light on HCC pathogenesis and held potential for optimizing the management of HCC.
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Affiliation(s)
- Yanfei Fang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Wenjing Yang
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Lexi Wu
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Lingya Yao
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xianghan Cao
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Haotian Chen
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
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8
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Zheng Y, Yu X, Zhang T, Hu L, Zhou D, Huang X. ATAD3A gene variations in a family with Harel-Yoon syndrome. Zhejiang Da Xue Xue Bao Yi Xue Ban 2023; 52:738-743. [PMID: 38105692 PMCID: PMC10764186 DOI: 10.3724/zdxbyxb-2023-0421] [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: 09/04/2023] [Accepted: 11/09/2023] [Indexed: 12/19/2023]
Abstract
An 11-day-old female neonate was admitted for cough with mouth foaming and feeding difficulties. The laboratory results indicated hyperlactatemia, elevated markers of myocardial injury and inflammation, and high levels of acylcarnitine octanoylcarnitine and decanoylcarnitine in tandem mass spectrometry. Ultrasonography and MRI suggested cardiac insufficiency and hypertrophic cardiomyopathy. Whole exome sequencing showed that both the proband and her elderly sister had a compound heterozygous variant of c.1492dup (p.T498Nfs*13) and c.1376T>C (p.F459S) in the ATAD3A gene, inherited from their father and mother, respectively. The diagnosis of Harel-Yoon syndrome was confirmed. The proband and her sister were born with clinical manifestations of metabolic acidosis, hyperlactatemia, feeding difficulties, elevated markers of myocardial injury as well as cardiac insufficiency, and both died in early infancy.
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Affiliation(s)
- Yi Zheng
- Department of Genetic and Metabolism, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, China.
| | - Xinyu Yu
- Department of Hepatobiliary and Pancreatic Surgery, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China.
| | - Ting Zhang
- Department of Genetic and Metabolism, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, China
| | - Lingwei Hu
- Department of Genetic and Metabolism, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, China
| | - Duo Zhou
- Department of Genetic and Metabolism, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, China
| | - Xinwen Huang
- Department of Genetic and Metabolism, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, China.
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9
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Liu Z, Sun L, Zheng B, Wang H, Qin X, Zhang P, Wo Q, Li H, Mou Y, Zhang D, Wang S. The value of ATAD3A as a potential biomarker for bladder cancer. Cancer Med 2023; 12:22395-22406. [PMID: 38018291 PMCID: PMC10757082 DOI: 10.1002/cam4.6759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 06/28/2023] [Accepted: 09/29/2023] [Indexed: 11/30/2023] Open
Abstract
BACKGROUND Bladder cancer (BCa) is a highly malignant tumor, and if left untreated, it can develop severe hematuria and tumor metastasis, thereby endangering the patient's life. The purpose of this paper was to detect the expression of ATAD3A in BCa and research the relationship between ATAD3A and pathological features of bladder cancer and the prognosis of patients. METHODS First, the expression of ATAD3A in BCa and normal bladder tissues was analyzed based on the UALCAN and Oncomine public databases. Second, 491 cases of surgically resected bladder cancer specimens and 110 cases of normal adjacent tissues were immunohistochemically stained. The expression of ATAD3A was quantified, and the value and prognosis of ATAD3A as a biomarker of BCa were evaluated. RESULTS The expression of ATAD3A in bladder cancer tissues was higher than that in normal bladder mucosa. High expression of ATAD3A was correlated with patient age, tumor size, number of tumors, distant metastasis, lymph node metastasis, lymphovascular invasion, and TNM stage (p < 0.05). Overexpression of ATAD3A is closely related to cancer patient survival. The mean survival time of bladder cancer patients with high ATAD3A expression was shorter than those with low ATAD3A levels. According to the relative comparing result, the high ATAD3A expression herald reduced overall survival in BCa patients. CONCLUSIONS The abnormal overexpression of ATAD3A may be related to the initiation and progress of bladder cancer. The upregulation of ATAD3A can be used as an effective indicator to diagnose bladder cancer and predict tumor progression. Furthermore, the combination of information from public databases and the results of clinical sample analysis can help us better understand the mechanism of action of molecular oncogenes in bladder cancer.
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Affiliation(s)
- Zhenghong Liu
- Urology & Nephrology Center, Department of UrologyZhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical CollegeHangzhouZhejiangChina
| | - Li Sun
- Urology & Nephrology Center, Department of UrologyZhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical CollegeHangzhouZhejiangChina
| | - Bin Zheng
- Urology & Nephrology Center, Department of UrologyZhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical CollegeHangzhouZhejiangChina
| | - Heng Wang
- Urology & Nephrology Center, Department of UrologyZhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical CollegeHangzhouZhejiangChina
| | - Xiaowen Qin
- Urology & Nephrology Center, Department of UrologyZhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical CollegeHangzhouZhejiangChina
| | - Pu Zhang
- Urology & Nephrology Center, Department of UrologyZhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical CollegeHangzhouZhejiangChina
| | - Qijun Wo
- Urology & Nephrology Center, Department of UrologyZhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical CollegeHangzhouZhejiangChina
| | - Haichang Li
- Urology & Nephrology Center, Department of UrologyZhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical CollegeHangzhouZhejiangChina
| | - Yixuan Mou
- Urology & Nephrology Center, Department of UrologyZhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical CollegeHangzhouZhejiangChina
| | - Dahong Zhang
- Urology & Nephrology Center, Department of UrologyZhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical CollegeHangzhouZhejiangChina
| | - Shuai Wang
- Urology & Nephrology Center, Department of UrologyZhejiang Provincial People's Hospital, Affiliated People's Hospital, Hangzhou Medical CollegeHangzhouZhejiangChina
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Skopkova M, Stufkova H, Rambani V, Stranecky V, Brennerova K, Kolnikova M, Pietrzykova M, Karhanek M, Noskova L, Tesarova M, Hansikova H, Gasperikova D. ATAD3A-related pontocerebellar hypoplasia: new patients and insights into phenotypic variability. Orphanet J Rare Dis 2023; 18:92. [PMID: 37095554 PMCID: PMC10127305 DOI: 10.1186/s13023-023-02689-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 04/02/2023] [Indexed: 04/26/2023] Open
Abstract
BACKGROUND Pathogenic variants in the ATAD3A gene lead to a heterogenous clinical picture and severity ranging from recessive neonatal-lethal pontocerebellar hypoplasia through milder dominant Harel-Yoon syndrome up to, again, neonatal-lethal but dominant cardiomyopathy. The genetic diagnostics of ATAD3A-related disorders is also challenging due to three paralogous genes in the ATAD3 locus, making it a difficult target for both sequencing and CNV analyses. RESULTS Here we report four individuals from two families with compound heterozygous p.Leu77Val and exon 3-4 deletion in the ATAD3A gene. One of these patients was characterized as having combined OXPHOS deficiency based on decreased complex IV activities, decreased complex IV, I, and V holoenzyme content, as well as decreased levels of COX2 and ATP5A subunits and decreased rate of mitochondrial proteosynthesis. All four reported patients shared a strikingly similar clinical picture to a previously reported patient with the p.Leu77Val variant in combination with a null allele. They presented with a less severe course of the disease and a longer lifespan than in the case of biallelic loss-of-function variants. This consistency of the phenotype in otherwise clinically heterogenous disorder led us to the hypothesis that the severity of the phenotype could depend on the severity of variant impact. To follow this rationale, we reviewed the published cases and sorted the recessive variants according to their impact predicted by their type and the severity of the disease in the patients. CONCLUSION The clinical picture and severity of ATAD3A-related disorders are homogenous in patients sharing the same combinations of variants. This knowledge enables deduction of variant impact severity based on known cases and allows more accurate prognosis estimation, as well as a better understanding of the ATAD3A function.
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Affiliation(s)
- Martina Skopkova
- Department of Metabolic Disorders, Institute of Experimental Endocrinology, Biomedical Research Center SAS, Bratislava, Slovakia
| | - Hana Stufkova
- Laboratory for Study of Mitochondrial Disorders, Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Vibhuti Rambani
- Department of Metabolic Disorders, Institute of Experimental Endocrinology, Biomedical Research Center SAS, Bratislava, Slovakia
| | - Viktor Stranecky
- Research Unit for Rare Diseases, Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Katarina Brennerova
- Department of Paediatrics, Medical Faculty of Comenius University, National Institute of Children's Diseases, Bratislava, Slovakia
| | - Miriam Kolnikova
- Department of Paediatric Neurology, Medical Faculty of Comenius University, National Institute of Children's Diseases, Bratislava, Slovakia
| | - Michaela Pietrzykova
- Department of Clinical Genetics, Institute of Medical Biology, Genetics and Clinical Genetics, Medical Faculty of Comenius University, University Hospital in Bratislava, Bratislava, Slovakia
| | - Miloslav Karhanek
- Department of Metabolic Disorders, Institute of Experimental Endocrinology, Biomedical Research Center SAS, Bratislava, Slovakia
| | - Lenka Noskova
- Research Unit for Rare Diseases, Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Marketa Tesarova
- Laboratory for Study of Mitochondrial Disorders, Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Hana Hansikova
- Laboratory for Study of Mitochondrial Disorders, Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Daniela Gasperikova
- Department of Metabolic Disorders, Institute of Experimental Endocrinology, Biomedical Research Center SAS, Bratislava, Slovakia.
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11
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Watanabe S, Horiuchi M, Murata Y, Komine O, Kawade N, Sobue A, Yamanaka K. Sigma-1 receptor maintains ATAD3A as a monomer to inhibit mitochondrial fragmentation at the mitochondria-associated membrane in amyotrophic lateral sclerosis. Neurobiol Dis 2023; 179:106031. [PMID: 36736924 DOI: 10.1016/j.nbd.2023.106031] [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: 09/05/2022] [Revised: 01/18/2023] [Accepted: 01/31/2023] [Indexed: 02/04/2023] Open
Abstract
Organelle contact sites are multifunctional platforms for maintaining cellular homeostasis. Alternations of the mitochondria-associated membranes (MAM), one of the organelle contact sites where the endoplasmic reticulum (ER) is tethered to the mitochondria, have been involved in the pathogenesis of neurodegenerative diseases, including amyotrophic lateral sclerosis (ALS). However, the detailed mechanisms through which MAM integrity is disrupted in ALS have not been fully elucidated. Here, we examined whether AAA ATPase domain-containing protein 3A (ATAD3A), a mitochondrial membrane AAA ATPase accumulating at the MAM, is involved in ALS. We found that sigma-1 receptor (σ1R), an ER-resident MAM protein causative for inherited juvenile ALS, required ATAD3A to maintain the MAM. In addition, σ1R retained ATAD3A as a monomer, which is associated with an inhibition of mitochondrial fragmentation. ATAD3A dimerization and mitochondrial fragmentation were significantly induced in σ1R-deficient or SOD1-linked ALS mouse spinal cords. Overall, these observations indicate that MAM induction by σ1R depends on ATAD3A and that σ1R maintains ATAD3A as a monomer to inhibit mitochondrial fragmentation. Our findings suggest that targeting σ1R-ATAD3A axis would be promising for a novel therapeutic strategy to treat mitochondrial dysfunction in neurological disorders, including ALS.
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Affiliation(s)
- Seiji Watanabe
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi, Japan
| | - Mai Horiuchi
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi, Japan; Department of Neuroscience and Pathobiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Yuri Murata
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi, Japan
| | - Okiru Komine
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi, Japan
| | - Noe Kawade
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi, Japan
| | - Akira Sobue
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi, Japan; Medical Interactive Research and Academia Industry Collaboration Center, Research Institute of Environmental Medicine, Nagoya University, Aichi, Japan
| | - Koji Yamanaka
- Department of Neuroscience and Pathobiology, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi, Japan; Department of Neuroscience and Pathobiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan; Institute for Glyco-core Research (iGCORE), Nagoya University, Aichi, Japan; Center for One Medicine Innovative Translational Research (COMIT), Gifu University Institute for Advanced Study, Japan.
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12
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The link between rheumatic disorders and inborn errors of immunity. EBioMedicine 2023; 90:104501. [PMID: 36870198 PMCID: PMC9996386 DOI: 10.1016/j.ebiom.2023.104501] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 12/11/2022] [Accepted: 02/10/2023] [Indexed: 03/06/2023] Open
Abstract
Inborn errors of immunity (IEIs) are immunological disorders characterized by variable susceptibility to infections, immune dysregulation and/or malignancies, as a consequence of damaging germline variants in single genes. Though initially identified among patients with unusual, severe or recurrent infections, non-infectious manifestations and especially immune dysregulation in the form of autoimmunity or autoinflammation can be the first or dominant phenotypic aspect of IEIs. An increasing number of IEIs causing autoimmunity or autoinflammation, including rheumatic disease have been reported over the last decade. Despite their rarity, identification of those disorders provided insight into the pathomechanisms of immune dysregulation, which may be relevant for understanding the pathogenesis of systemic rheumatic disorders. In this review, we present novel IEIs primarily causing autoimmunity or autoinflammation along with their pathogenic mechanisms. In addition, we explore the likely pathophysiological and clinical relevance of IEIs in systemic rheumatic disorders.
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13
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Xie XQ, Yang Y, Wang Q, Liu HF, Fang XY, Li CL, Jiang YZ, Wang S, Zhao HY, Miao JY, Ding SS, Liu XD, Yao XH, Yang WT, Jiang J, Shao ZM, Jin G, Bian XW. Targeting ATAD3A-PINK1-mitophagy axis overcomes chemoimmunotherapy resistance by redirecting PD-L1 to mitochondria. Cell Res 2023; 33:215-228. [PMID: 36627348 PMCID: PMC9977947 DOI: 10.1038/s41422-022-00766-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 11/29/2022] [Indexed: 01/11/2023] Open
Abstract
Only a small proportion of patients with triple-negative breast cancer benefit from immune checkpoint inhibitor (ICI) targeting PD-1/PD-L1 signaling in combination with chemotherapy. Here, we discovered that therapeutic response to ICI plus paclitaxel was associated with subcellular redistribution of PD-L1. In our immunotherapy cohort of ICI in combination with nab-paclitaxel, tumor samples from responders showed significant distribution of PD-L1 at mitochondria, while non-responders showed increased accumulation of PD-L1 on tumor cell membrane instead of mitochondria. Our results also revealed that the distribution pattern of PD-L1 was regulated by an ATAD3A-PINK1 axis. Mechanistically, PINK1 recruited PD-L1 to mitochondria for degradation via a mitophagy pathway. Importantly, paclitaxel increased ATAD3A expression to disrupt proteostasis of PD-L1 by restraining PINK1-dependent mitophagy. Clinically, patients with tumors exhibiting high expression of ATAD3A detected before the treatment with ICI in combination with paclitaxel had markedly shorter progression-free survival compared with those with ATAD3A-low tumors. Preclinical results further demonstrated that targeting ATAD3A reset a favorable antitumor immune microenvironment and increased the efficacy of combination therapy of ICI plus paclitaxel. In summary, our results indicate that ATAD3A serves not only as a resistant factor for the combination therapy of ICI plus paclitaxel through preventing PD-L1 mitochondrial distribution, but also as a promising target for increasing the therapeutic responses to chemoimmunotherapy.
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Affiliation(s)
- Xiao-Qing Xie
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Yi Yang
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Qiang Wang
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
- Department of Oncology, Shandong Second Provincial General Hospital, Jinan, Shandong, China
| | - Hao-Fei Liu
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Xuan-Yu Fang
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Cheng-Long Li
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Yi-Zhou Jiang
- Department of Breast Surgery, Fudan University Shanghai Cancer Center; Key Laboratory of Breast Cancer in Shanghai, Shanghai, China
| | - Shuai Wang
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Hong-Yu Zhao
- National Laboratory of Biomacromolecules, Chinese Academy of Sciences Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Jing-Ya Miao
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Shuai-Shuai Ding
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Xin-Dong Liu
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Xiao-Hong Yao
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Wen-Tao Yang
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Jun Jiang
- Department of Breast Diseases, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Zhi-Ming Shao
- Department of Breast Surgery, Fudan University Shanghai Cancer Center; Key Laboratory of Breast Cancer in Shanghai, Shanghai, China
| | - Guoxiang Jin
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China.
| | - Xiu-Wu Bian
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China.
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14
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Hu Z, Shi S, Ou Y, Hu F, Long D. Mitochondria-associated endoplasmic reticulum membranes: A promising toxicity regulation target. Acta Histochem 2023; 125:152000. [PMID: 36696877 DOI: 10.1016/j.acthis.2023.152000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/15/2023] [Accepted: 01/16/2023] [Indexed: 01/24/2023]
Abstract
Mitochondria-associated endoplasmic reticulum membranes (MAMs) are dynamic suborganelle membranes that physically couple endoplasmic reticulum (ER) and mitochondria to provide a platform for exchange of intracellular molecules and crosstalk between the two organelles. Dysfunctions of mitochondria and ER and imbalance of intracellular homeostasis have been discovered in the research of toxics. Cellular activities such as oxidative stress, ER stress, Ca2+ transport, autophagy, mitochondrial fusion and fission, and apoptosis mediated by MAMs are closely related to the toxicological effects of various toxicants. These cellular activities mediated by MAMs crosstalk with each other. Regulating the structure and function of MAMs can alleviate the damage caused by toxicants to some extent. In this review, we discuss the relationships between MAMs and the mechanisms of toxicological effects, and highlight MAMs as a potential target for protection against toxicants.
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Affiliation(s)
- Zehui Hu
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China
| | - Shengyuan Shi
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China
| | - Yiquan Ou
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China
| | - Fangyan Hu
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China
| | - Dingxin Long
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China.
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15
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Shang D, Huang M, Wang B, Yan X, Wu Z, Zhang X. mtDNA Maintenance and Alterations in the Pathogenesis of Neurodegenerative Diseases. Curr Neuropharmacol 2023; 21:578-598. [PMID: 35950246 PMCID: PMC10207910 DOI: 10.2174/1570159x20666220810114644] [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: 03/17/2022] [Revised: 06/13/2022] [Accepted: 07/18/2022] [Indexed: 11/22/2022] Open
Abstract
Considerable evidence indicates that the semiautonomous organelles mitochondria play key roles in the progression of many neurodegenerative disorders. Mitochondrial DNA (mtDNA) encodes components of the OXPHOS complex but mutated mtDNA accumulates in cells with aging, which mirrors the increased prevalence of neurodegenerative diseases. This accumulation stems not only from the misreplication of mtDNA and the highly oxidative environment but also from defective mitophagy after fission. In this review, we focus on several pivotal mitochondrial proteins related to mtDNA maintenance (such as ATAD3A and TFAM), mtDNA alterations including mtDNA mutations, mtDNA elimination, and mtDNA release-activated inflammation to understand the crucial role played by mtDNA in the pathogenesis of neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, and Huntington's disease. Our work outlines novel therapeutic strategies for targeting mtDNA.
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Affiliation(s)
- Dehao Shang
- Center of Implant Dentistry, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - Minghao Huang
- Center of Implant Dentistry, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - Biyao Wang
- The VIP Department, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - Xu Yan
- The VIP Department, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
| | - Zhou Wu
- Department of Aging Science and Pharmacology, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, Japan
- OBT Research Center, Faculty of Dental Science, Kyushu University, Fukuoka 812-8582, Japan
| | - Xinwen Zhang
- Center of Implant Dentistry, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China
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16
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Hata Y, Ichimata S, Hirono K, Yamaguchi Y, Oku Y, Ichida F, Nishida N. Pathological and Comprehensive Genetic Investigation of Autopsy Cases of Idiopathic Bradyarrhythmia. Circ J 2022; 87:111-119. [PMID: 36070930 DOI: 10.1253/circj.cj-22-0397] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Idiopathic bradyarrhythmia is considered to be due to pathological degeneration of the cardiac conduction system (CCS) during aging. There appears to have been no comprehensive genetic investigations in patients with idiopathic bradyarrhythmia.Methods and Results: Ten autopsy cases with advanced bradyarrhythmia (6 men and 4 women; age: 70-94 years, 81.5±6.9 years; 5 cases each of sinus node dysfunction [SND] and complete atrioventricular block [CAVB]) were genetically investigated by using whole-exome sequencing. Morphometric analysis of the CCS was performed with sex-, age- and comorbidity-matched control cases. As a result, severe loss of nodal cells and distal atrioventricular conduction system were found in SND and CAVB, respectively. However, the conduction tissue loss was not significant in either the atrioventricular node or the proximal bundle of His in CAVB cases. A total of 13 heterozygous potential variants were found in 3 CAVB and 2 SND cases. Of these 13 variants, 4 were missense in the known progressive cardiac conduction disease-related genes: GATA4 and RYR2. In the remaining 9 variants, 5 were loss-of-function mutation with highly possible pathogenicity. CONCLUSIONS In addition to degenerative changes of selectively vulnerable areas in the heart during advancing age, the vulnerability of the CCS, which may be associated with "rare variants of small effect," may also be a contributing factor to the degeneration of CCS, leading to "idiopathic" bradyarrhythmia.
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Affiliation(s)
- Yukiko Hata
- Department of Legal Medicine, Faculty of Medicine, University of Toyama
| | - Shojiro Ichimata
- Department of Legal Medicine, Faculty of Medicine, University of Toyama
| | - Keiichi Hirono
- Department of Pediatrics, Faculty of Medicine, University of Toyama
| | - Yoshiaki Yamaguchi
- Department of Legal Medicine, Faculty of Medicine, University of Toyama.,Department of Cardiology, Saiseikai Takaoka Hospital
| | - Yuko Oku
- Department of Legal Medicine, Faculty of Medicine, University of Toyama
| | - Fukiko Ichida
- Department of Pediatrics, International University of Health & Welfare
| | - Naoki Nishida
- Department of Legal Medicine, Faculty of Medicine, University of Toyama
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17
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Baker MJ, Crameri JJ, Thorburn DR, Frazier AE, Stojanovski D. Mitochondrial biology and dysfunction in secondary mitochondrial disease. Open Biol 2022; 12:220274. [PMID: 36475414 PMCID: PMC9727669 DOI: 10.1098/rsob.220274] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Mitochondrial diseases are a broad, genetically heterogeneous class of metabolic disorders characterized by deficits in oxidative phosphorylation (OXPHOS). Primary mitochondrial disease (PMD) defines pathologies resulting from mutation of mitochondrial DNA (mtDNA) or nuclear genes affecting either mtDNA expression or the biogenesis and function of the respiratory chain. Secondary mitochondrial disease (SMD) arises due to mutation of nuclear-encoded genes independent of, or indirectly influencing OXPHOS assembly and operation. Despite instances of novel SMD increasing year-on-year, PMD is much more widely discussed in the literature. Indeed, since the implementation of next generation sequencing (NGS) techniques in 2010, many novel mitochondrial disease genes have been identified, approximately half of which are linked to SMD. This review will consolidate existing knowledge of SMDs and outline discrete categories within which to better understand the diversity of SMD phenotypes. By providing context to the biochemical and molecular pathways perturbed in SMD, we hope to further demonstrate the intricacies of SMD pathologies outside of their indirect contribution to mitochondrial energy generation.
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Affiliation(s)
- Megan J. Baker
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Jordan J. Crameri
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria 3052, Australia
| | - David R. Thorburn
- Murdoch Children's Research Institute, Royal Children's Hospital and Department of Paediatrics, University of Melbourne, Parkville, Victoria 3052, Australia,Victorian Clinical Genetics Services, Royal Children's Hospital, Parkville, Victoria 3052, Australia
| | - Ann E. Frazier
- Murdoch Children's Research Institute, Royal Children's Hospital and Department of Paediatrics, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Diana Stojanovski
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria 3052, Australia
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18
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Lee H, Kim DW. Deletion of ATAD3A inhibits osteogenesis by impairing mitochondria structure and function in pre-osteoblast. Dev Dyn 2022; 251:1982-2000. [PMID: 36000457 DOI: 10.1002/dvdy.528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 07/22/2022] [Accepted: 08/08/2022] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND ATPase family AAA-domain containing protein 3A (ATAD3A) is a nuclear encoded mitochondrial membrane protein that spans inner and outer membrane, and it has been shown to regulate mitochondrial dynamics and cholesterol metabolism. Since the mitochondrial functions have been implicated for osteogenic differentiation, a role of ATAD3A in skeletal development has been investigated. RESULTS Mesenchyme-specific ATAD3 knockout mice displayed severe defects in skeletal development. Additionally, osteoblast-specific deletion of ATAD3 in mice caused significant reduction in bone mass, while cartilage-specific ATAD3 knockout mice did not show any significant phenotypes. Consistent with these in vivo findings, ATAD3A knockdown impaired mitochondrial morphology and function in calvarial pre-osteoblast cultures, which, in turn, suppressed osteogenic differentiation in vitro. CONCLUSIONS The current findings suggest that ATAD3A plays a crucial role in mitochondria homeostasis, which is required for osteogenic differentiation during skeletal development.
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Affiliation(s)
- Hyeri Lee
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Dae-Won Kim
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea
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19
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Chen L, Dong J, Liao S, Wang S, Wu Z, Zuo M, Liu B, Yan C, Chen Y, He H, Meng Q, Song Z. Loss of Sam50 in hepatocytes induces cardiolipin-dependent mitochondrial membrane remodeling to trigger mtDNA release and liver injury. Hepatology 2022; 76:1389-1408. [PMID: 35313046 DOI: 10.1002/hep.32471] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIMS Sam50, a key component of the sorting and assembly machinery (SAM) complex, is also involved in bridging mitochondrial outer-membrane and inner-membrane contacts. However, the physiological and pathological functions of Sam50 remain largely unknown. APPROACH AND RESULTS Here we show that Sam50 interacts with MICOS (mitochondrial contact site and cristae organizing system) and ATAD3 (ATPase family AAA domain-containing protein 3) to form the Sam50-MICOS-ATAD3-mtDNA axis, which maintains mtDNA stability. Loss of Sam50 causes mitochondrial DNA (mtDNA) aggregation. Furthermore, Sam50 cooperates with Mic60 to bind to cardiolipin, maintaining the integrity of mitochondrial membranes. Sam50 depletion leads to cardiolipin externalization, which causes mitochondrial outer-membrane and inner-membrane (including crista membrane) remodeling, triggering Bax mitochondrial recruitment, mtDNA aggregation, and release. Physiologically, acetaminophen (an effective antipyretic and analgesic)-caused Sam50 reduction or Sam50 liver-specific knockout induces mtDNA release, leading to activation of the cGAS-STING pathway and liver inflammation in mice. Moreover, exogenous expression of Sam50 remarkably attenuates APAP-induced liver hepatoxicity. CONCLUSIONS Our findings uncover the critical role of Sam50 in maintaining mitochondrial membrane integrity and mtDNA stability in hepatocytes and reveal that Sam50 depletion-induced cardiolipin externalization is a signal of mtDNA release and controls mtDNA-dependent innate immunity.
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Affiliation(s)
- Li Chen
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
| | - Jun Dong
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
| | - Siyang Liao
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
| | - Siyou Wang
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
| | - Zhida Wu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
| | - Meiling Zuo
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
| | - Bing Liu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
| | - Chaojun Yan
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
| | - Yong Chen
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
| | - He He
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
| | - Qingtao Meng
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
| | - Zhiyin Song
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Frontier Science Center for Immunology and Metabolism, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
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A High-Throughput Search for SFXN1 Physical Partners Led to the Identification of ATAD3, HSD10 and TIM50. BIOLOGY 2022; 11:biology11091298. [PMID: 36138777 PMCID: PMC9495560 DOI: 10.3390/biology11091298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/23/2022] [Accepted: 08/28/2022] [Indexed: 11/25/2022]
Abstract
Simple Summary Mitochondria are central players in cell fate and cell death. Indeed, mitochondrial dysfunction has been observed in many diseases, including neurodegenerative diseases. The activity of these organelles relies on numerous mitochondrial transporters, among which the sideroflexins have received little attention to date despite their emerging importance in human health. To better understand the cellular functions of these transporters and their associations with diseases, we herein investigated the molecular partners of one human sideroflexin, SFXN1. Several proteins capable of interacting with SFXN1 were identified, including ATAD3 and HSD10, two mitochondrial proteins linked to neuronal disorders. Abstract Sideroflexins (SFXN, SLC56) are a family of evolutionarily conserved mitochondrial carriers potentially involved in iron homeostasis. One member of the SFXN family is SFXN1, recently identified as a human mitochondrial serine transporter. However, little is known about the SFXN1 interactome, necessitating a high-throughput search to better characterize SFXN1 mitochondrial functions. Via co-immunoprecipitation followed by shotgun mass spectrometry (coIP-MS), we identified 96 putative SFXN1 interactors in the MCF7 human cell line. Our in silico analysis of the SFXN1 interactome highlights biological processes linked to mitochondrial organization, electron transport chains and transmembrane transport. Among the potential physical partners, ATAD3A and 17β-HSD10, two proteins associated with neurological disorders, were confirmed using different human cell lines. Nevertheless, further work will be needed to investigate the significance of these interactions.
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21
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Lv Y, Cheng L, Peng F. Compositions and Functions of Mitochondria-Associated Endoplasmic Reticulum Membranes and Their Contribution to Cardioprotection by Exercise Preconditioning. Front Physiol 2022; 13:910452. [PMID: 35733995 PMCID: PMC9207531 DOI: 10.3389/fphys.2022.910452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/11/2022] [Indexed: 11/13/2022] Open
Abstract
Mitochondria-associated endoplasmic reticulum membranes (MAMs) are important components of intracellular signaling and contribute to the regulation of intracellular Ca2+/lipid homeostasis, mitochondrial dynamics, autophagy/mitophagy, apoptosis, and inflammation. Multiple studies have shown that proteins located on MAMs mediate cardioprotection. Exercise preconditioning (EP) has been shown to protect the myocardium from adverse stimuli, but these mechanisms are still being explored. Recently, a growing body of evidence points to MAMs, suggesting that exercise or EP may be involved in cardioprotection by modulating proteins on MAMs and subsequently affecting MAMs. In this review, we summarize the latest findings on MAMs, analyzing the structure and function of MAMs and the role of MAM-related proteins in cardioprotection. We focused on the possible mechanisms by which exercise or EP can modulate the involvement of MAMs in cardioprotection. We found that EP may affect MAMs by regulating changes in MFN2, MFN1, AMPK, FUNDC1, BECN1, VDAC1, GRP75, IP3R, CYPD, GSK3β, AKT, NLRP3, GRP78, and LC3, thus playing a cardioprotective role. We also provided direction for future studies that may be of interest so that more in-depth studies can be conducted to elucidate the relationship between EP and cardioprotection.
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22
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Chen L, Li Y, Sottas C, Lazaris A, Petrillo SK, Metrakos P, Li L, Ishida Y, Saito T, Garza S, Papadopoulos V. Loss of mitochondrial ATPase ATAD3A contributes to nonalcoholic fatty liver disease through accumulation of lipids and damaged mitochondria. J Biol Chem 2022; 298:102008. [PMID: 35513069 PMCID: PMC9157002 DOI: 10.1016/j.jbc.2022.102008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 03/30/2022] [Accepted: 04/12/2022] [Indexed: 11/26/2022] Open
Abstract
Mitochondrial ATPase ATAD3A is essential for cholesterol transport, mitochondrial structure, and cell survival. However, the relationship between ATAD3A and nonalcoholic fatty liver disease (NAFLD) is largely unknown. In this study, we found that ATAD3A was upregulated in the progression of NAFLD in livers from rats with diet-induced nonalcoholic steatohepatitis and in human livers from patients diagnosed with NAFLD. We used CRISPR-Cas9 to delete ATAD3A in Huh7 human hepatocellular carcinoma cells and used RNAi to silence ATAD3A expression in human hepatocytes isolated from humanized liver-chimeric mice to assess the influence of ATAD3A deletion on liver cells with free cholesterol (FC) overload induced by treatment with cholesterol plus 58035, an inhibitor of acetyl-CoA acetyltransferase. Our results showed that ATAD3A KO exacerbated FC accumulation under FC overload in Huh7 cells and also that triglyceride levels were significantly increased in ATAD3A KO Huh7 cells following inhibition of lipolysis mediated by upregulation of lipid droplet-binding protein perilipin-2. Moreover, loss of ATAD3A upregulated autophagosome-associated light chain 3-II protein and p62 in Huh7 cells and fresh human hepatocytes through blockage of autophagosome degradation. Finally, we show the mitophagy mediator, PTEN-induced kinase 1, was downregulated in ATAD3A KO Huh7 cells, suggesting that ATAD3A KO inhibits mitophagy. These results also showed that loss of ATAD3A impaired mitochondrial basal respiration and ATP production in Huh7 cells under FC overload, accompanied by downregulation of mitochondrial ATP synthase. Taken together, we conclude that loss of ATAD3A promotes the progression of NAFLD through the accumulation of FC, triglyceride, and damaged mitochondria in hepatocytes.
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Affiliation(s)
- Liting Chen
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, California, USA
| | - Yuchang Li
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, California, USA
| | - Chantal Sottas
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, California, USA
| | - Anthoula Lazaris
- Research Institute of the McGill University Health Center, Montreal, Quebec, Canada; Department of Surgery, McGill University, Montreal, Quebec, Canada
| | - Stephanie K Petrillo
- Research Institute of the McGill University Health Center, Montreal, Quebec, Canada; Department of Surgery, McGill University, Montreal, Quebec, Canada
| | - Peter Metrakos
- Research Institute of the McGill University Health Center, Montreal, Quebec, Canada; Department of Surgery, McGill University, Montreal, Quebec, Canada
| | - Lu Li
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, California, USA
| | - Yuji Ishida
- Department of Medicine, Division of Gastrointestinal and Liver Diseases, Keck School of Medicine, University of Southern California, Los Angeles, California, USA; Research & Development Department, PhoenixBio, Co, Ltd, Higashi-Hiroshima, Hiroshima, Japan
| | - Takeshi Saito
- Department of Medicine, Division of Gastrointestinal and Liver Diseases, Keck School of Medicine, University of Southern California, Los Angeles, California, USA; University of Southern California Research Center for Liver Diseases, Los Angeles, California, USA
| | - Samuel Garza
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, California, USA
| | - Vassilios Papadopoulos
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, California, USA.
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23
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ATAD3A oligomerization promotes neuropathology and cognitive deficits in Alzheimer's disease models. Nat Commun 2022; 13:1121. [PMID: 35236834 PMCID: PMC8891325 DOI: 10.1038/s41467-022-28769-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 02/11/2022] [Indexed: 12/12/2022] Open
Abstract
Predisposition to Alzheimer’s disease (AD) may arise from lipid metabolism perturbation, however, the underlying mechanism remains elusive. Here, we identify ATPase family AAA-domain containing protein 3A (ATAD3A), a mitochondrial AAA-ATPase, as a molecular switch that links cholesterol metabolism impairment to AD phenotypes. In neuronal models of AD, the 5XFAD mouse model and post-mortem AD brains, ATAD3A is oligomerized and accumulated at the mitochondria-associated ER membranes (MAMs), where it induces cholesterol accumulation by inhibiting gene expression of CYP46A1, an enzyme governing brain cholesterol clearance. ATAD3A and CYP46A1 cooperate to promote APP processing and synaptic loss. Suppressing ATAD3A oligomerization by heterozygous ATAD3A knockout or pharmacological inhibition with DA1 restores neuronal CYP46A1 levels, normalizes brain cholesterol turnover and MAM integrity, suppresses APP processing and synaptic loss, and consequently reduces AD neuropathology and cognitive deficits in AD transgenic mice. These findings reveal a role for ATAD3A oligomerization in AD pathogenesis and suggest ATAD3A as a potential therapeutic target for AD. Disturbance in lipid metabolism is one of the major pathological events in Alzheimer’s disease (AD). Here, the authors identify ATAD3A oligomerization as a key mechanism causing impaired cholesterol metabolism and neuropathology in AD models.
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24
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ATAD3B and SKIL polymorphisms associated with antipsychotic-induced QTc interval change in patients with schizophrenia: a genome-wide association study. Transl Psychiatry 2022; 12:56. [PMID: 35136033 PMCID: PMC8825824 DOI: 10.1038/s41398-022-01825-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/14/2022] [Accepted: 01/19/2022] [Indexed: 11/26/2022] Open
Abstract
QTc interval prolongation is one of the most common antipsychotic-induced side effects which could lead to ventricular tachycardia or Torsade de Pointes, even cardiac arrest. There is very limited understanding on the genetic factors that associated with antipsychotic-induced QTc interval change. We conducted a genome-wide association study (GWAS) of antipsychotic-induced QTc interval change among patients with schizophrenia. A total of 2040 patients with schizophrenia were randomly assigned to six groups (olanzapine, risperidone, quetiapine, aripiprazole, ziprasidone, and first-generation antipsychotics; first-generation antipsychotics including haloperidol or perphenazine were also assigned randomly) and received 6-week antipsychotic treatment. We identified two novel loci (rs200050752 in ATAD3B and rs186507741 in SKIL) that were associated with antipsychotic-induced QTc interval change at a genome-wide significance level. The combination of polygenic risk score (PRS), based the GWAS of myocardial infarction from BioBank Japan project, and clinical data (sex, heart rate and QTc interval at baseline) could be applied to predict whether patients with schizophrenia have QTc interval prolongation (10 ms was applied as threshold, P < 0.001, area under the curve [AUC] was 0.797), especially for the first episode patients (P < 0.001, AUC was 0.872). We identified two loci located within genes related to mitochondrial function and cell growth and differentiation, which were both associated with schizophrenia and heart function. The combination of PRS and clinical data could predict whether patients with schizophrenia have the side effect of QTc interval prolongation, which could fundamentally guide the choice of antipsychotic in patients with schizophrenia, especially for the first-episode patients.
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25
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Lang L, Loveless R, Dou J, Lam T, Chen A, Wang F, Sun L, Juarez J, Qin ZS, Saba NF, Shay C, Teng Y. ATAD3A mediates activation of RAS-independent mitochondrial ERK1/2 signaling, favoring head and neck cancer development. J Exp Clin Cancer Res 2022; 41:43. [PMID: 35093151 PMCID: PMC8800319 DOI: 10.1186/s13046-022-02274-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 01/25/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Targeting mitochondrial oncoproteins presents a new concept in the development of effective cancer therapeutics. ATAD3A is a nuclear-encoded mitochondrial enzyme contributing to mitochondrial dynamics, cholesterol metabolism, and signal transduction. However, its impact and underlying regulatory mechanisms in cancers remain ill-defined. METHODS We used head and neck squamous cell carcinoma (HNSCC) as a research platform and achieved gene depletion by lentiviral shRNA and CRISPR/Cas9. Molecular alterations were examined by RNA-sequencing, phospho-kinase profiling, Western blotting, RT-qPCR, immunohistochemistry, and immunoprecipitation. Cancer cell growth was assessed by MTT, colony formation, soft agar, and 3D cultures. The therapeutic efficacy in tumor development was evaluated in orthotopic tongue tumor NSG mice. RESULTS ATAD3A is highly expressed in HNSCC tissues and cell lines. Loss of ATAD3A expression suppresses HNSCC cell growth and elicits tumor regression in orthotopic tumor-bearing mice, whereas gain of ATAD3A expression produces the opposite effects. From a mechanistic perspective, the tumor suppression induced by the overexpression of the Walker A dead mutant of ATAD3A (K358) produces a potent dominant-negative effect due to defective ATP-binding. Moreover, ATAD3A binds to ERK1/2 in the mitochondria of HNSCC cells in the presence of VDAC1, and this interaction is essential for the activation of mitochondrial ERK1/2 signaling. Most importantly, the ATAD3A-ERK1/2 signaling axis drives HNSCC development in a RAS-independent fashion and, thus, tumor suppression is more effectively achieved when ATAD3A knockout is combined with RAS inhibitor treatment. CONCLUSIONS These findings highlight the novel function of ATAD3A in regulating mitochondrial ERK1/2 activation that favors HNSCC development. Combined targeting of ATAD3A and RAS signaling may potentiate anticancer activity for HNSCC therapeutics.
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Affiliation(s)
- Liwei Lang
- Department of Oral Biology and Diagnostic Sciences, Georgia Cancer Center, Augusta University, Augusta, GA, 30912, USA
| | - Reid Loveless
- Department of Oral Biology and Diagnostic Sciences, Georgia Cancer Center, Augusta University, Augusta, GA, 30912, USA
| | - Juan Dou
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University School of Medicine, 201 Dowman Dr, Atlanta, GA, 30322, USA
| | - Tiffany Lam
- Department of Oral Biology and Diagnostic Sciences, Georgia Cancer Center, Augusta University, Augusta, GA, 30912, USA
| | - Alex Chen
- Department of Oral Biology and Diagnostic Sciences, Georgia Cancer Center, Augusta University, Augusta, GA, 30912, USA
| | - Fang Wang
- Department of Oral Biology and Diagnostic Sciences, Georgia Cancer Center, Augusta University, Augusta, GA, 30912, USA
| | - Li Sun
- Department of Oral Biology and Diagnostic Sciences, Georgia Cancer Center, Augusta University, Augusta, GA, 30912, USA
| | - Jakeline Juarez
- Department of Oral Biology and Diagnostic Sciences, Georgia Cancer Center, Augusta University, Augusta, GA, 30912, USA
| | - Zhaohui Steve Qin
- Department of Biostatistics and Bioinformatics, Emory University, Atlanta, GA, 30322, USA
| | - Nabil F Saba
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University School of Medicine, 201 Dowman Dr, Atlanta, GA, 30322, USA
| | - Chloe Shay
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory, University, Atlanta, GA, 30322, USA
| | - Yong Teng
- Department of Oral Biology and Diagnostic Sciences, Georgia Cancer Center, Augusta University, Augusta, GA, 30912, USA.
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University School of Medicine, 201 Dowman Dr, Atlanta, GA, 30322, USA.
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26
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Yang Z, Wang L, Yang C, Pu S, Guo Z, Wu Q, Zhou Z, Zhao H. Mitochondrial Membrane Remodeling. Front Bioeng Biotechnol 2022; 9:786806. [PMID: 35059386 PMCID: PMC8763711 DOI: 10.3389/fbioe.2021.786806] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/22/2021] [Indexed: 02/05/2023] Open
Abstract
Mitochondria are key regulators of many important cellular processes and their dysfunction has been implicated in a large number of human disorders. Importantly, mitochondrial function is tightly linked to their ultrastructure, which possesses an intricate membrane architecture defining specific submitochondrial compartments. In particular, the mitochondrial inner membrane is highly folded into membrane invaginations that are essential for oxidative phosphorylation. Furthermore, mitochondrial membranes are highly dynamic and undergo constant membrane remodeling during mitochondrial fusion and fission. It has remained enigmatic how these membrane curvatures are generated and maintained, and specific factors involved in these processes are largely unknown. This review focuses on the current understanding of the molecular mechanism of mitochondrial membrane architectural organization and factors critical for mitochondrial morphogenesis, as well as their functional link to human diseases.
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Affiliation(s)
- Ziyun Yang
- School of Life Sciences, Guangxi Normal University, Guilin, China.,Guangxi Universities, Key Laboratory of Stem Cell and Biopharmaceutical Technology, Guangxi Normal University, Guilin, China.,Research Center for Biomedical Sciences, Guangxi Normal University, Guilin, China
| | - Liang Wang
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, High-Tech Development Zone, Chengdu, China
| | - Cheng Yang
- School of Life Sciences, Guangxi Normal University, Guilin, China.,Guangxi Universities, Key Laboratory of Stem Cell and Biopharmaceutical Technology, Guangxi Normal University, Guilin, China.,Research Center for Biomedical Sciences, Guangxi Normal University, Guilin, China
| | - Shiming Pu
- School of Life Sciences, Guangxi Normal University, Guilin, China.,Guangxi Universities, Key Laboratory of Stem Cell and Biopharmaceutical Technology, Guangxi Normal University, Guilin, China.,Research Center for Biomedical Sciences, Guangxi Normal University, Guilin, China
| | - Ziqi Guo
- School of Life Sciences, Guangxi Normal University, Guilin, China.,Guangxi Universities, Key Laboratory of Stem Cell and Biopharmaceutical Technology, Guangxi Normal University, Guilin, China.,Research Center for Biomedical Sciences, Guangxi Normal University, Guilin, China
| | - Qiong Wu
- School of Life Sciences, Guangxi Normal University, Guilin, China.,Guangxi Universities, Key Laboratory of Stem Cell and Biopharmaceutical Technology, Guangxi Normal University, Guilin, China.,Research Center for Biomedical Sciences, Guangxi Normal University, Guilin, China
| | - Zuping Zhou
- School of Life Sciences, Guangxi Normal University, Guilin, China.,Guangxi Universities, Key Laboratory of Stem Cell and Biopharmaceutical Technology, Guangxi Normal University, Guilin, China.,Research Center for Biomedical Sciences, Guangxi Normal University, Guilin, China
| | - Hongxia Zhao
- School of Life Sciences, Guangxi Normal University, Guilin, China.,Guangxi Universities, Key Laboratory of Stem Cell and Biopharmaceutical Technology, Guangxi Normal University, Guilin, China.,Research Center for Biomedical Sciences, Guangxi Normal University, Guilin, China.,Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
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27
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Arguello T, Peralta S, Antonicka H, Gaidosh G, Diaz F, Tu YT, Garcia S, Shiekhattar R, Barrientos A, Moraes CT. ATAD3A has a scaffolding role regulating mitochondria inner membrane structure and protein assembly. Cell Rep 2021; 37:110139. [PMID: 34936866 PMCID: PMC8785211 DOI: 10.1016/j.celrep.2021.110139] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 09/02/2021] [Accepted: 11/24/2021] [Indexed: 11/30/2022] Open
Abstract
The ATPase Family AAA Domain Containing 3A (ATAD3A), is a mitochondrial inner membrane protein conserved in metazoans. ATAD3A has been associated with several mitochondrial functions, including nucleoid organization, cholesterol metabolism, and mitochondrial translation. To address its primary role, we generated a neuronal-specific conditional knockout (Atad3 nKO) mouse model, which developed a severe encephalopathy by 5 months of age. Pre-symptomatic mice showed aberrant mitochondrial cristae morphogenesis in the cortex as early as 2 months. Using a multi-omics approach in the CNS of 2-to-3-month-old mice, we found early alterations in the organelle membrane structure. We also show that human ATAD3A associates with different components of the inner membrane, including OXPHOS complex I, Letm1, and prohibitin complexes. Stochastic Optical Reconstruction Microscopy (STORM) shows that ATAD3A is regularly distributed along the inner mitochondrial membrane, suggesting a critical structural role in inner mitochondrial membrane and its organization, most likely in an ATPase-dependent manner. Arguello et al. show that deletion of the mitochondrial protein ATAD3 in neurons leads to neuronal loss and death. The earliest phenotype is disruption of the mitochondrial inner membrane structure; OXPHOS complexes are affected later. ATAD3 is regularly spaced and has several interactors at the inner membrane, including CI subunits.
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Affiliation(s)
- Tania Arguello
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Susana Peralta
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Hana Antonicka
- Department of Human Genetics and Montreal Neurological Institute, McGill University, Montreal, QC H3A 0C7, Canada
| | - Gabriel Gaidosh
- Department of Human Genetics, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Francisca Diaz
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Ya-Ting Tu
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Sofia Garcia
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Ramin Shiekhattar
- Department of Human Genetics, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Antonio Barrientos
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Carlos T Moraes
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
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28
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Kim M, Schulz V, Brings L, Schoeller T, Kühn K, Vierling E. mTERF18 and ATAD3 are required for mitochondrial nucleoid structure and their disruption confers heat tolerance in Arabidopsis thaliana. THE NEW PHYTOLOGIST 2021; 232:2026-2042. [PMID: 34482561 DOI: 10.1111/nph.17717] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 08/23/2021] [Indexed: 05/27/2023]
Abstract
Mitochondria play critical roles in generating ATP through oxidative phosphorylation (OXPHOS) and produce both damaging and signaling reactive oxygen species (ROS). They have reduced genomes that encode essential subunits of the OXPHOS machinery. Mitochondrial Transcription tERmination Factor-related (mTERF) proteins are involved in organelle gene expression, interacting with organellar DNA or RNA. We previously found that mutations in Arabidopsis thaliana mTERF18/SHOT1 enable plants to better tolerate heat and oxidative stresses, presumably due to low ROS production and reduced oxidative damage. Here we discover that shot1 mutants have greatly reduced OXPHOS complexes I and IV and reveal that suppressor of hot1-4 1 (SHOT1) binds DNA and localizes to mitochondrial nucleoids, which are disrupted in shot1. Furthermore, three homologues of animal ATPase family AAA domain-containing protein 3 (ATAD3), which is involved in mitochondrial nucleoid organization, were identified as SHOT1-interacting proteins. Importantly, disrupting ATAD3 function disrupts nucleoids, reduces accumulation of complex I, and enhances heat tolerance, as is seen in shot1 mutants. Our data link nucleoid organization to OXPHOS biogenesis and suggest that the common defects in shot1 mutants and ATAD3-disrupted plants lead to critical changes in mitochondrial metabolism and signaling that result in plant heat tolerance.
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Affiliation(s)
- Minsoo Kim
- Department of Biochemistry and Molecular Biology, University of Massachusetts, Amherst, MA, 01003, USA
| | - Vincent Schulz
- Department of Life Sciences, Institute of Biology, Humboldt-Universität zu Berlin, 10099, Berlin, Germany
| | - Lea Brings
- Department of Life Sciences, Institute of Biology, Humboldt-Universität zu Berlin, 10099, Berlin, Germany
| | - Theresa Schoeller
- Department of Plant Physiology, Institute of Biology, Martin-Luther-Universität Halle-Wittenberg, 06120, Halle (Saale), Germany
| | - Kristina Kühn
- Department of Life Sciences, Institute of Biology, Humboldt-Universität zu Berlin, 10099, Berlin, Germany
- Department of Plant Physiology, Institute of Biology, Martin-Luther-Universität Halle-Wittenberg, 06120, Halle (Saale), Germany
| | - Elizabeth Vierling
- Department of Biochemistry and Molecular Biology, University of Massachusetts, Amherst, MA, 01003, USA
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29
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Lepelley A, Della Mina E, Van Nieuwenhove E, Waumans L, Fraitag S, Rice GI, Dhir A, Frémond ML, Rodero MP, Seabra L, Carter E, Bodemer C, Buhas D, Callewaert B, de Lonlay P, De Somer L, Dyment DA, Faes F, Grove L, Holden S, Hully M, Kurian MA, McMillan HJ, Suetens K, Tyynismaa H, Chhun S, Wai T, Wouters C, Bader-Meunier B, Crow YJ. Enhanced cGAS-STING-dependent interferon signaling associated with mutations in ATAD3A. J Exp Med 2021; 218:e20201560. [PMID: 34387651 PMCID: PMC8374862 DOI: 10.1084/jem.20201560] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 12/14/2020] [Accepted: 07/15/2021] [Indexed: 12/12/2022] Open
Abstract
Mitochondrial DNA (mtDNA) has been suggested to drive immune system activation, but the induction of interferon signaling by mtDNA has not been demonstrated in a Mendelian mitochondrial disease. We initially ascertained two patients, one with a purely neurological phenotype and one with features suggestive of systemic sclerosis in a syndromic context, and found them both to demonstrate enhanced interferon-stimulated gene (ISG) expression in blood. We determined each to harbor a previously described de novo dominant-negative heterozygous mutation in ATAD3A, encoding ATPase family AAA domain-containing protein 3A (ATAD3A). We identified five further patients with mutations in ATAD3A and recorded up-regulated ISG expression and interferon α protein in four of them. Knockdown of ATAD3A in THP-1 cells resulted in increased interferon signaling, mediated by cyclic GMP-AMP synthase (cGAS) and stimulator of interferon genes (STING). Enhanced interferon signaling was abrogated in THP-1 cells and patient fibroblasts depleted of mtDNA. Thus, mutations in the mitochondrial membrane protein ATAD3A define a novel type I interferonopathy.
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Affiliation(s)
- Alice Lepelley
- Université de Paris, Imagine Institute, Laboratory of Neurogenetics and Neuroinflammation, Institut National de la Santé et de la Recherche Médicale, Unité mixte de recherche 1163, Paris, France
| | - Erika Della Mina
- Université de Paris, Imagine Institute, Laboratory of Neurogenetics and Neuroinflammation, Institut National de la Santé et de la Recherche Médicale, Unité mixte de recherche 1163, Paris, France
| | - Erika Van Nieuwenhove
- Universitair Ziekenhuis Leuven, Department of Pediatrics, Leuven, Belgium
- Department of Microbiology and Immunology, Laboratory of Adaptive Immunity, Katholieke Universiteit Leuven, Leuven, Belgium
- VIB-KU Leuven Center for Brain and Disease Research, Leuven, Belgium
| | - Lise Waumans
- Department of Pathology, Universitair Ziekenhuis Leuven, Campus Gasthuisberg, Leuven, Belgium
| | - Sylvie Fraitag
- Service d’Anatomo-Pathologie, Hôpital Necker-Enfants-Malades, Assistance Publique - Hôpitaux de Paris, Paris, France
| | - Gillian I. Rice
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Ashish Dhir
- Medical Research Council Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - Marie-Louise Frémond
- Université de Paris, Imagine Institute, Laboratory of Neurogenetics and Neuroinflammation, Institut National de la Santé et de la Recherche Médicale, Unité mixte de recherche 1163, Paris, France
| | - Mathieu P. Rodero
- Université de Paris, Imagine Institute, Laboratory of Neurogenetics and Neuroinflammation, Institut National de la Santé et de la Recherche Médicale, Unité mixte de recherche 1163, Paris, France
| | - Luis Seabra
- Université de Paris, Imagine Institute, Laboratory of Neurogenetics and Neuroinflammation, Institut National de la Santé et de la Recherche Médicale, Unité mixte de recherche 1163, Paris, France
| | - Edwin Carter
- Medical Research Council Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - Christine Bodemer
- Department of Dermatology and Reference Centre for Genodermatoses and Rare Skin Diseases, Imagine Institute, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique - Hôpitaux de Paris, Université Paris-Centre, Paris, France
| | - Daniela Buhas
- Medical Genetics Division, Department of Specialized Medicine, McGill University Health Centre, Montreal, Canada
- Human Genetics Department, McGill University, Montreal, Quebec, Canada
| | - Bert Callewaert
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Pascale de Lonlay
- Reference Center for Inherited Metabolic Diseases, Necker Hospital, Assistance Publique - Hôpitaux de Paris, Institut National de la Santé et de la Recherche Médicale U1151, Institut Necker Enfants Malades, Université de Paris, Filière G2M, MetabERN, Paris, France
- Institut Imagine, Institut National de la Santé et de la Recherche Médicale Unité mixte de recherche 1163, Paris, France
| | - Lien De Somer
- Pediatric Rheumatology, Universitair Ziekenhuis Leuven, Leuven, Belgium
- Laboratory of Immunobiology, Rega Institute, Katholieke Universiteit Leuven, Leuven, Belgium
- European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases at University Hospital Leuven, Leuven, Belgium
| | - David A. Dyment
- Department of Genetics, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Fran Faes
- Department of Pediatric Neurology, Ghent University Hospital, Ghent, Belgium
| | - Lucy Grove
- Community Paediatric Department, West Suffolk Hospital Foundation Trust, Bury St Edmunds, UK
| | - Simon Holden
- Department of Clinical Genetics, Addenbrooke's Hospital, Cambridge, UK
| | - Marie Hully
- Pediatric Neurology Department, Hôpital Necker-Enfants Malades, Assistance Publique - Hôpitaux de Paris, Paris, France
| | - Manju A. Kurian
- Developmental Neurosciences, University College London Great Ormond Street Institute of Child Health, London, UK
| | - Hugh J. McMillan
- Children’s Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, Canada
| | - Kristin Suetens
- Department of Radiology, University Hospitals Leuven, Radiology, Leuven, Belgium
- Department of Radiology, Regional Hospital Heilig Hart Leuven, Leuven, Belgium
| | - Henna Tyynismaa
- Stem Cells and Metabolism Research Program, Faculty of Medicine and Neuroscience Center, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Stéphanie Chhun
- Paris Descartes University, Université de Paris, Sorbonne-Paris-Cité, Paris, France
- Laboratory of Immunology, Hôpital Necker-Enfants Malades, Assistance Publique–Hôpitaux de Paris, Centre-Université de Paris, Paris, France
- Institut Necker-Enfants Malades, Centre National de la Recherche Scientifique Unité mixte de recherche 8253, Institut National de la Santé et de la Recherche Médicale Unité mixte de recherche 1151, Team Immunoregulation and Immunopathology, Paris, France
| | - Timothy Wai
- Mitochondrial Biology Group, Institut Pasteur, Centre National de la Recherche Scientifique, Unité mixte de recherche 3691, Paris, France
| | - Carine Wouters
- Pediatric Rheumatology, Universitair Ziekenhuis Leuven, Leuven, Belgium
- Laboratory of Immunobiology, Rega Institute, Katholieke Universiteit Leuven, Leuven, Belgium
- European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases at University Hospital Leuven, Leuven, Belgium
| | - Brigitte Bader-Meunier
- Pediatric Immunology-Hematology and Rheumatology Unit, Hôpital Necker-Enfants Malades, Laboratory of Immunogenetics of Pediatric Autoimmunity, Institut National de la Santé et de la Recherche Médicale Unité mixte de recherche 1163, Assistance Publique - Hôpitaux de Paris, Institut Imagine, Paris, France
| | - Yanick J. Crow
- Université de Paris, Imagine Institute, Laboratory of Neurogenetics and Neuroinflammation, Institut National de la Santé et de la Recherche Médicale, Unité mixte de recherche 1163, Paris, France
- Medical Research Council Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
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30
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Lepelley A, Wai T, Crow YJ. Mitochondrial Nucleic Acid as a Driver of Pathogenic Type I Interferon Induction in Mendelian Disease. Front Immunol 2021; 12:729763. [PMID: 34512665 PMCID: PMC8428523 DOI: 10.3389/fimmu.2021.729763] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/05/2021] [Indexed: 12/17/2022] Open
Abstract
The immune response to viral infection involves the recognition of pathogen-derived nucleic acids by intracellular sensors, leading to type I interferon (IFN), and downstream IFN-stimulated gene, induction. Ineffective discrimination of self from non-self nucleic acid can lead to autoinflammation, a phenomenon implicated in an increasing number of disease states, and well highlighted by the group of rare genetic disorders referred to as the type I interferonopathies. To understand the pathogenesis of these monogenic disorders, and polyfactorial diseases associated with pathogenic IFN upregulation, such as systemic lupus erythematosus and dermatomyositis, it is important to define the self-derived nucleic acid species responsible for such abnormal IFN induction. Recently, attention has focused on mitochondria as a novel source of immunogenic self nucleic acid. Best appreciated for their function in oxidative phosphorylation, metabolism and apoptosis, mitochondria are double membrane-bound organelles that represent vestigial bacteria in the cytosol of eukaryotic cells, containing their own DNA and RNA enclosed within the inner mitochondrial membrane. There is increasing recognition that a loss of mitochondrial integrity and compartmentalization can allow the release of mitochondrial nucleic acid into the cytosol, leading to IFN induction. Here, we provide recent insights into the potential of mitochondrial-derived DNA and RNA to drive IFN production in Mendelian disease. Specifically, we summarize current understanding of how nucleic acids are detected as foreign when released into the cytosol, and then consider the findings implicating mitochondrial nucleic acid in type I interferonopathy disease states. Finally, we discuss the potential for IFN-driven pathology in primary mitochondrial disorders.
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Affiliation(s)
- Alice Lepelley
- Université de Paris, Imagine Institute, Laboratory of Neurogenetics and Neuroinflammation, Inserm UMR 1163, Paris, France
| | - Timothy Wai
- Mitochondrial Biology Group, Institut Pasteur CNRS UMR 3691, Paris, France
| | - Yanick J Crow
- Université de Paris, Imagine Institute, Laboratory of Neurogenetics and Neuroinflammation, Inserm UMR 1163, Paris, France.,Medical Research Council Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, United Kingdom
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31
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Huang KCY, Chiang SF, Yang PC, Ke TW, Chen TW, Lin CY, Chang HY, Chen WTL, Chao KSC. ATAD3A stabilizes GRP78 to suppress ER stress for acquired chemoresistance in colorectal cancer. J Cell Physiol 2021; 236:6481-6495. [PMID: 33580514 DOI: 10.1002/jcp.30323] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 01/27/2021] [Accepted: 01/29/2021] [Indexed: 12/19/2022]
Abstract
AAA domain containing 3A (ATAD3A) is a nucleus-encoded mitochondrial protein with vital function in communication between endoplasmic reticulum (ER) and mitochondria which is participated in cancer metastasis. Here we show that elevated ATAD3A expression is clinically associated with poor 5-year disease-free survival in patients with colorectal cancer (CRC), especially high-risk CRC patients who received adjuvant chemotherapy. Our results indicated ATAD3A is significantly upregulated to reduce chemotherapy-induced cancer cell death. We found that knockdown of ATAD3A leads to dysregulation in protein processing for inducing ER stress by RNA sequencing (RNA-seq). In response to chemotherapy-induced ER stress, ATAD3A interacts with elevated GRP78 protein to assist protein folding and alleviate ER stress for cancer cell survival. This reduction of ER stress leads to reduce the surface exposure of calreticulin, which is the initiator of immunogenic cell death and antitumor immunity. However, silencing of ATAD3A enhances cell death, triggers the feasibility of chemotherapy-induced ER stress for antitumor immunity, increases infiltration of T lymphocytes and delays tumor regrowth in vitro and in vivo. Clinically, CRC patients with less ATAD3A have high density of CD45+ intratumoral infiltrating lymphocytes (TILs) and memory CD45RO+ TILs. Taken together, our results suggest that pharmacologic targeting to ATAD3A might be a potential therapeutic strategy to enhance antitumor immunity for CRC patients who received adjuvant chemotherapy.
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Affiliation(s)
- Kevin Chih-Yang Huang
- Department of Biomedical Imaging and Radiological Science, China Medical University, Taichung, Taiwan
- Translation Research Core, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Shu-Fen Chiang
- Lab of Precision Medicine, Feng-Yuan Hospital, Ministry of Health and Welfare, Taichung, Taiwan
- Cancer Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Pei-Chen Yang
- Cancer Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Tao-Wei Ke
- Department of Colorectal Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan
- School of Chinese Medicine & Graduate Institute of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Tsung-Wei Chen
- Department of Pathology, Asia University Hospital, Asia University, Taichung, Taiwan
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Chen-Yu Lin
- Cancer Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Hsin-Yu Chang
- Cancer Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - William Tzu-Liang Chen
- Department of Colorectal Surgery, China Medical University Hospital, China Medical University, Taichung, Taiwan
- Department of Colorectal Surgery, China Medical University HsinChu Hospital, China Medical University, HsinChu, Taiwan
- Department of Surgery, School of Medicine, China Medical University, Taichung, Taiwan
| | - Kun-San Clifford Chao
- Cancer Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
- Department of Radiotherapy, School of Medicine, China Medical University, Taichung, Taiwan
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32
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Communications between Mitochondria and Endoplasmic Reticulum in the Regulation of Metabolic Homeostasis. Cells 2021; 10:cells10092195. [PMID: 34571844 PMCID: PMC8468463 DOI: 10.3390/cells10092195] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/12/2021] [Accepted: 08/16/2021] [Indexed: 12/18/2022] Open
Abstract
Mitochondria associated membranes (MAM), which are the contact sites between endoplasmic reticulum (ER) and mitochondria, have emerged as an important hub for signaling molecules to integrate the cellular and organelle homeostasis, thus facilitating the adaptation of energy metabolism to nutrient status. This review explores the dynamic structural and functional features of the MAM and summarizes the various abnormalities leading to the impaired insulin sensitivity and metabolic diseases.
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33
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Wilson EL, Metzakopian E. ER-mitochondria contact sites in neurodegeneration: genetic screening approaches to investigate novel disease mechanisms. Cell Death Differ 2021; 28:1804-1821. [PMID: 33335290 PMCID: PMC8185109 DOI: 10.1038/s41418-020-00705-8] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 11/26/2020] [Accepted: 11/30/2020] [Indexed: 12/26/2022] Open
Abstract
Mitochondria-ER contact sites (MERCS) are known to underpin many important cellular homoeostatic functions, including mitochondrial quality control, lipid metabolism, calcium homoeostasis, the unfolded protein response and ER stress. These functions are known to be dysregulated in neurodegenerative diseases, including Parkinson's disease (PD), Alzheimer's disease (AD) and amyloid lateral sclerosis (ALS), and the number of disease-related proteins and genes being associated with MERCS is increasing. However, many details regarding MERCS and their role in neurodegenerative diseases remain unknown. In this review, we aim to summarise the current knowledge regarding the structure and function of MERCS, and to update the field on current research in PD, AD and ALS. Furthermore, we will evaluate high-throughput screening techniques, including RNAi vs CRISPR/Cas9, pooled vs arrayed formats and how these could be combined with current techniques to visualise MERCS. We will consider the advantages and disadvantages of each technique and how it can be utilised to uncover novel protein pathways involved in MERCS dysfunction in neurodegenerative diseases.
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Affiliation(s)
- Emma Louise Wilson
- UK Dementia Research Institute, Department of Clinical Neuroscience, University of Cambridge, Cambridge, CB2 0AH, UK.
- Open Targets, Wellcome Genome Campus, Hinxton, Cambridge, CB10 1SA, UK.
| | - Emmanouil Metzakopian
- UK Dementia Research Institute, Department of Clinical Neuroscience, University of Cambridge, Cambridge, CB2 0AH, UK.
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Aoyama-Ishiwatari S, Hirabayashi Y. Endoplasmic Reticulum-Mitochondria Contact Sites-Emerging Intracellular Signaling Hubs. Front Cell Dev Biol 2021; 9:653828. [PMID: 34095118 PMCID: PMC8172986 DOI: 10.3389/fcell.2021.653828] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 04/06/2021] [Indexed: 01/04/2023] Open
Abstract
It has become apparent that our textbook illustration of singular isolated organelles is obsolete. In reality, organelles form complex cooperative networks involving various types of organelles. Light microscopic and ultrastructural studies have revealed that mitochondria-endoplasmic reticulum (ER) contact sites (MERCSs) are abundant in various tissues and cell types. Indeed, MERCSs have been proposed to play critical roles in various biochemical and signaling functions such as Ca2+ homeostasis, lipid transfer, and regulation of organelle dynamics. While numerous proteins involved in these MERCS-dependent functions have been reported, how they coordinate and cooperate with each other has not yet been elucidated. In this review, we summarize the functions of mammalian proteins that localize at MERCSs and regulate their formation. We also discuss potential roles of the MERCS proteins in regulating multiple organelle contacts.
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Affiliation(s)
| | - Yusuke Hirabayashi
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, Tokyo, Japan
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35
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Shu L, Hu C, Xu M, Yu J, He H, Lin J, Sha H, Lu B, Engelender S, Guan M, Song Z. ATAD3B is a mitophagy receptor mediating clearance of oxidative stress-induced damaged mitochondrial DNA. EMBO J 2021; 40:e106283. [PMID: 33665835 PMCID: PMC8047441 DOI: 10.15252/embj.2020106283] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 01/22/2021] [Accepted: 02/01/2021] [Indexed: 12/11/2022] Open
Abstract
Mitochondrial DNA (mtDNA) encodes several key components of respiratory chain complexes that produce cellular energy through oxidative phosphorylation. mtDNA is vulnerable to damage under various physiological stresses, especially oxidative stress. mtDNA damage leads to mitochondrial dysfunction, and dysfunctional mitochondria can be removed by mitophagy, an essential process in cellular homeostasis. However, how damaged mtDNA is selectively cleared from the cell, and how damaged mtDNA triggers mitophagy, remain mostly unknown. Here, we identified a novel mitophagy receptor, ATAD3B, which is specifically expressed in primates. ATAD3B contains a LIR motif that binds to LC3 and promotes oxidative stress-induced mitophagy in a PINK1-independent manner, thus promoting the clearance of damaged mtDNA induced by oxidative stress. Under normal conditions, ATAD3B hetero-oligomerizes with ATAD3A, thus promoting the targeting of the C-terminal region of ATAD3B to the mitochondrial intermembrane space. Oxidative stress-induced mtDNA damage or mtDNA depletion reduces ATAD3B-ATAD3A hetero-oligomerization and leads to exposure of the ATAD3B C-terminus at the mitochondrial outer membrane and subsequent recruitment of LC3 for initiating mitophagy. Furthermore, ATAD3B is little expressed in m.3243A > G mutated cells and MELAS patient fibroblasts showing endogenous oxidative stress, and ATAD3B re-expression promotes the clearance of m.3243A > G mutated mtDNA. Our findings uncover a new pathway to selectively remove damaged mtDNA and reveal that increasing ATAD3B activity is a potential therapeutic approach for mitochondrial diseases.
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Affiliation(s)
- Li Shu
- Hubei Key Laboratory of Cell HomeostasisCollege of Life SciencesFrontier Science Center for Immunology and MetabolismWuhan UniversityWuhanChina
| | - Chao Hu
- Hubei Key Laboratory of Cell HomeostasisCollege of Life SciencesFrontier Science Center for Immunology and MetabolismWuhan UniversityWuhanChina
| | - Meng Xu
- Hubei Key Laboratory of Cell HomeostasisCollege of Life SciencesFrontier Science Center for Immunology and MetabolismWuhan UniversityWuhanChina
| | - Jianglong Yu
- Hubei Key Laboratory of Cell HomeostasisCollege of Life SciencesFrontier Science Center for Immunology and MetabolismWuhan UniversityWuhanChina
| | - He He
- Hubei Key Laboratory of Cell HomeostasisCollege of Life SciencesFrontier Science Center for Immunology and MetabolismWuhan UniversityWuhanChina
| | - Jie Lin
- Department of NeurologyHuashan HospitalFudan UniversityShanghaiChina
| | - Hongying Sha
- State Key Laboratory of Medical NeurobiologyInstitute of Brain ScienceShanghai Medical CollegeFudan UniversityShanghaiChina
| | - Bin Lu
- Attardi Institute of Mitochondrial BiomedicineSchool of Life SciencesWenzhou Medical UniversityWenzhouChina
| | - Simone Engelender
- Department of BiochemistryRappaport Faculty of MedicineTechnion‐Israel Institute of TechnologyHaifaIsrael
| | - Minxin Guan
- Institute of GeneticsZhejiang University School of MedicineHangzhouChina
| | - Zhiyin Song
- Hubei Key Laboratory of Cell HomeostasisCollege of Life SciencesFrontier Science Center for Immunology and MetabolismWuhan UniversityWuhanChina
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36
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Yap ZY, Park YH, Wortmann SB, Gunning AC, Ezer S, Lee S, Duraine L, Wilichowski E, Wilson K, Mayr JA, Wagner M, Li H, Kini U, Black ED, Monaghan KG, Lupski JR, Ellard S, Westphal DS, Harel T, Yoon WH. Functional interpretation of ATAD3A variants in neuro-mitochondrial phenotypes. Genome Med 2021; 13:55. [PMID: 33845882 PMCID: PMC8042885 DOI: 10.1186/s13073-021-00873-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 03/17/2021] [Indexed: 12/20/2022] Open
Abstract
Background ATPase family AAA-domain containing protein 3A (ATAD3A) is a nuclear-encoded mitochondrial membrane-anchored protein involved in diverse processes including mitochondrial dynamics, mitochondrial DNA organization, and cholesterol metabolism. Biallelic deletions (null), recessive missense variants (hypomorph), and heterozygous missense variants or duplications (antimorph) in ATAD3A lead to neurological syndromes in humans. Methods To expand the mutational spectrum of ATAD3A variants and to provide functional interpretation of missense alleles in trans to deletion alleles, we performed exome sequencing for identification of single nucleotide variants (SNVs) and copy number variants (CNVs) in ATAD3A in individuals with neurological and mitochondrial phenotypes. A Drosophila Atad3a Gal4 knockin-null allele was generated using CRISPR-Cas9 genome editing technology to aid the interpretation of variants. Results We report 13 individuals from 8 unrelated families with biallelic ATAD3A variants. The variants included four missense variants inherited in trans to loss-of-function alleles (p.(Leu77Val), p.(Phe50Leu), p.(Arg170Trp), p.(Gly236Val)), a homozygous missense variant p.(Arg327Pro), and a heterozygous non-frameshift indel p.(Lys568del). Affected individuals exhibited findings previously associated with ATAD3A pathogenic variation, including developmental delay, hypotonia, congenital cataracts, hypertrophic cardiomyopathy, and cerebellar atrophy. Drosophila studies indicated that Phe50Leu, Gly236Val, Arg327Pro, and Lys568del are severe loss-of-function alleles leading to early developmental lethality. Further, we showed that Phe50Leu, Gly236Val, and Arg327Pro cause neurogenesis defects. On the contrary, Leu77Val and Arg170Trp are partial loss-of-function alleles that cause progressive locomotion defects and whose expression leads to an increase in autophagy and mitophagy in adult muscles. Conclusion Our findings expand the allelic spectrum of ATAD3A variants and exemplify the use of a functional assay in Drosophila to aid variant interpretation.
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Affiliation(s)
- Zheng Yie Yap
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, 73104, USA
| | - Yo Han Park
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, 73104, USA
| | - Saskia B Wortmann
- Institute of Human Genetics, Technical University Munich, Munich, Germany.,University Children's Hospital, Paracelsus Medical University (PMU), Salzburg, Austria.,Radboud Centre for Mitochondrial Medicine (RCMM), Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Adam C Gunning
- Exeter Genomics Laboratory, Royal Devon and Exeter NHS Foundation Trust, Exeter, EX2 5DW, UK.,Institute of Biomedical and Clinical Science, College of Medicine and Health, University of Exeter, Exeter, EX2 5DW, UK
| | - Shlomit Ezer
- Department of Genetics, Hadassah Medical Center, POB 12000, 9112001, Jerusalem, Israel.,Faculty of Medicine, Hebrew University of Jerusalem, POB 12000, 9112001, Jerusalem, Israel
| | - Sukyeong Lee
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Lita Duraine
- Jan and Dan Duncan Neurological Research Institute, Baylor College of Medicine, Houston, TX, USA
| | - Ekkehard Wilichowski
- Department of Pediatrics and Pediatric Neurology, University Medical Center Göttingen, Georg-August-Universität Göttingen, Göttingen, Germany
| | - Kate Wilson
- Oxford Centre for Genomic Medicine, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Johannes A Mayr
- University Children's Hospital, Paracelsus Medical University (PMU), Salzburg, Austria
| | - Matias Wagner
- Institute of Human Genetics, Technical University Munich, Munich, Germany.,Institute of Neurogenomics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Hong Li
- Department of Human Genetics, School of Medicine, Emory University, Atlanta, GA, USA.,Department of Pediatrics, School of Medicine, Children's Healthcare of Atlanta, Emory University, Atlanta, GA, USA
| | - Usha Kini
- Oxford Centre for Genomic Medicine, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Emily Davis Black
- Department of Human Genetics, School of Medicine, Emory University, Atlanta, GA, USA
| | | | - James R Lupski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.,Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.,Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA.,Texas Children's Hospital, Houston, TX, USA
| | - Sian Ellard
- Exeter Genomics Laboratory, Royal Devon and Exeter NHS Foundation Trust, Exeter, EX2 5DW, UK.,Institute of Biomedical and Clinical Science, College of Medicine and Health, University of Exeter, Exeter, EX2 5DW, UK
| | - Dominik S Westphal
- Institute of Human Genetics, Technical University Munich, Munich, Germany
| | - Tamar Harel
- Department of Genetics, Hadassah Medical Center, POB 12000, 9112001, Jerusalem, Israel. .,Faculty of Medicine, Hebrew University of Jerusalem, POB 12000, 9112001, Jerusalem, Israel.
| | - Wan Hee Yoon
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, 73104, USA.
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37
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Kumar V, Maity S. ER Stress-Sensor Proteins and ER-Mitochondrial Crosstalk-Signaling Beyond (ER) Stress Response. Biomolecules 2021; 11:173. [PMID: 33525374 PMCID: PMC7911976 DOI: 10.3390/biom11020173] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/14/2021] [Accepted: 01/19/2021] [Indexed: 02/07/2023] Open
Abstract
Recent studies undoubtedly show the importance of inter organellar connections to maintain cellular homeostasis. In normal physiological conditions or in the presence of cellular and environmental stress, each organelle responds alone or in coordination to maintain cellular function. The Endoplasmic reticulum (ER) and mitochondria are two important organelles with very specialized structural and functional properties. These two organelles are physically connected through very specialized proteins in the region called the mitochondria-associated ER membrane (MAM). The molecular foundation of this relationship is complex and involves not only ion homeostasis through the shuttling of calcium but also many structural and apoptotic proteins. IRE1alpha and PERK are known for their canonical function as an ER stress sensor controlling unfolded protein response during ER stress. The presence of these transmembrane proteins at the MAM indicates its potential involvement in other biological functions beyond ER stress signaling. Many recent studies have now focused on the non-canonical function of these sensors. In this review, we will focus on ER mitochondrial interdependence with special emphasis on the non-canonical role of ER stress sensors beyond ER stress.
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38
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Loveless R, Teng Y. Targeting WASF3 Signaling in Metastatic Cancer. Int J Mol Sci 2021; 22:ijms22020836. [PMID: 33467681 PMCID: PMC7830529 DOI: 10.3390/ijms22020836] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 01/13/2021] [Accepted: 01/13/2021] [Indexed: 12/14/2022] Open
Abstract
Increasing evidence indicates that cancer metastasis is regulated by specific genetic pathways independent of those controlling tumorigenesis and cancer growth. WASF3, a Wiskott–Aldrich syndrome protein family member, appears to play a major role not only in the regulation of actin cytoskeleton dynamics but also in cancer cell invasion/metastasis. Recent studies have highlighted that WASF3 is a master regulator and acts as a pivotal scaffolding protein, bringing the various components of metastatic signaling complexes together both spatially and temporally. Herein, targeting WASF3 at the levels of transcription, protein stability, and phosphorylation holds great promise for metastasis suppression, regardless of the diverse genetic backgrounds associated with tumor development. This review focuses on the critical and distinct contributions of WASF3 in the regulation of signal pathways promoting cancer cell invasion and metastasis.
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Affiliation(s)
- Reid Loveless
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, Augusta, GA 30912, USA;
| | - Yong Teng
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, Augusta, GA 30912, USA;
- Georgia Cancer Center, Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
- Department of Medical Laboratory, Imaging and Radiologic Sciences, College of Allied Health, Augusta University, Augusta, GA 30912, USA
- Correspondence: ; Tel.: +17064465611; Fax: +17067219415
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39
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Mitochondria Associated Membranes (MAMs): Architecture and physiopathological role. Cell Calcium 2021; 94:102343. [PMID: 33418313 DOI: 10.1016/j.ceca.2020.102343] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/27/2020] [Accepted: 12/27/2020] [Indexed: 12/17/2022]
Abstract
In the last decades, the communication between the Endoplasmic reticulum (ER) and mitochondria has obtained great attention: mitochondria-associated membranes (MAMs), which represent the contact sites between the two organelles, have indeed emerged as central hub involved in different fundamental cell processes, such as calcium signalling, apoptosis, autophagy and lipid biosynthesis. Consistently, dysregulation of ER-mitochondria crosstalk has been associated with different pathological conditions, ranging from diabetes to cancer and neurodegenerative diseases. In this review, we will try to summarize the current knowledge on MAMs' structure and functions in health and their relevance for human diseases.
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40
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Wu H, Wang T, Liu Y, Li X, Xu S, Wu C, Zou H, Cao M, Jin G, Lang J, Wang B, Liu B, Luo X, Xu C. Mitophagy promotes sorafenib resistance through hypoxia-inducible ATAD3A dependent Axis. J Exp Clin Cancer Res 2020; 39:274. [PMID: 33280610 PMCID: PMC7720487 DOI: 10.1186/s13046-020-01768-8] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 11/05/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The identification of novel targets for recovering sorafenib resistance is pivotal for Hepatocellular carcinoma (HCC) patients. Mitophagy is the programmed degradation of mitochondria, and is likely involved in drug resistance of cancer cells. Here, we identified hyperactivated mitophagy is essential for sorafenib resistance, and the mitophagy core regulator gene ATAD3A (ATPase family AAA domain containing 3A) was down regulated in hypoxia induced resistant HCC cells. Blocking mitophagy may restore the sorafenib sensitivity of these cells and provide a new treatment strategy for HCC patients. METHODS Hypoxia induced sorafenib resistant cancer cells were established by culturing under 1% O2 with increasing drug treatment. RNA sequencing was conducted in transfecting LM3 cells with sh-ATAD3A lentivirus. Subsequent mechanistic studies were performed in HCC cell lines by manipulating ATAD3A expression isogenically where we evaluated drug sensitivity, molecular signaling events. In vivo study, we investigated the combined treatment effect of sorafenib and miR-210-5P antagomir. RESULTS We found a hyperactivated mitophagy regulating by ATAD3A-PINK1/PARKIN axis in hypoxia induced sorafenib resistant HCC cells. Gain- and loss- of ATAD3A were related to hypoxia-induced mitophagy and sorafenib resistance. In addition, ATAD3A is a functional target of miR-210-5p and its oncogenic functions are likely mediated by increased miR-210-5P expression. miR-210-5P was upregulated under hypoxia and participated in regulating sorafenib resistance. In vivo xenograft assay showed that miR-210-5P antagomir combined with sorafenib abrogated the tumorigenic effect of ATAD3A down-regulation in mice. CONCLUSIONS Loss of ATAD3A hyperactivates mitophagy which is a core event in hypoxia induced sorafenib resistance in HCC cells. Targeting miR-210-5P-ATAD3A axis is a novel therapeutic target for sorafenib-resistant HCC.
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Affiliation(s)
- Hong Wu
- Guangdong Key Laboratory of Genome Stability and Human Disease Prevention, Shenzhen University Health Science Center, 518055, Shenzhen, China
- Integrative Cancer Center&Cancer Clinical Research Center, Sichuan Cancer Hospital & Institute Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610000, P. R. China
- Department of Experimental Research, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning, 510000, P. R. China
| | - Tao Wang
- Department of Gastroenterology, Daping Hospital, Army Medical University (Third Military Medical University), Chongqing, 400042, P. R. China
| | - Yiqiang Liu
- Integrative Cancer Center&Cancer Clinical Research Center, Sichuan Cancer Hospital & Institute Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610000, P. R. China
- Department of Experimental Research, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning, 510000, P. R. China
| | - Xin Li
- Department of Experimental Research, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning, 510000, P. R. China
| | - Senlin Xu
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital and Key Laboratory of Tumor Immunopathology, Army Medical University (Third Military Medical University), Chongqing, 400042, P. R. China
| | - Changtao Wu
- Integrative Cancer Center&Cancer Clinical Research Center, Sichuan Cancer Hospital & Institute Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610000, P. R. China
- Department of Experimental Research, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning, 510000, P. R. China
| | - Hongbo Zou
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital and Key Laboratory of Tumor Immunopathology, Army Medical University (Third Military Medical University), Chongqing, 400042, P. R. China
| | - Mianfu Cao
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital and Key Laboratory of Tumor Immunopathology, Army Medical University (Third Military Medical University), Chongqing, 400042, P. R. China
| | - Guoxiang Jin
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital and Key Laboratory of Tumor Immunopathology, Army Medical University (Third Military Medical University), Chongqing, 400042, P. R. China
| | - Jinyi Lang
- Integrative Cancer Center&Cancer Clinical Research Center, Sichuan Cancer Hospital & Institute Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610000, P. R. China
| | - Bin Wang
- Department of Gastroenterology, Daping Hospital, Army Medical University (Third Military Medical University), Chongqing, 400042, P. R. China
| | - Baohua Liu
- Guangdong Key Laboratory of Genome Stability and Human Disease Prevention, Shenzhen University Health Science Center, 518055, Shenzhen, China.
| | - Xiaolin Luo
- Department of Experimental Research, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning, 510000, P. R. China.
| | - Chuan Xu
- Integrative Cancer Center&Cancer Clinical Research Center, Sichuan Cancer Hospital & Institute Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610000, P. R. China.
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41
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Zhu Z, Fu H, Wang S, Yu X, You Q, Shi M, Dai C, Wang G, Cha W, Wang W. Whole-exome sequencing identifies prognostic mutational signatures in gastric cancer. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1484. [PMID: 33313229 PMCID: PMC7729362 DOI: 10.21037/atm-20-6620] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background Gastric cancer (GC) is a heterogeneous disease, and is a leading cause of cancer deaths in Eastern Asia. Genomic analysis, such as whole-exome sequencing (WES), can help identify key genetic alterations leading to the malignancy and diversity of GC, and may help identify new drug targets. Methods We identified genomic alterations in a cohort of 38 GC patients, including 26 metastatic and 12 non-metastatic patients. We analyzed the association between novel gene mutations and copy number variations (CNVs) with tumor metastasis and patient survival. Results A number of significantly mutated genes in somatic and germline cells were identified. Among them, ATAD3B somatic mutation, a potential biomarker of immunotherapy in stomach cancers, was associated with better patient survival (P=0.0939) and metastasis (P=0.074). POLE germline variation was correlated with shorter overall survival (OS; P=0.0100). Novel CNVs were also identified and can potentially be used as biomarkers. These included 9p24.1 deletion (P=0.0376) and 16p11.2 amplification (P=0.0066), which were both associated with shorter OS. CNVs of several genes including MMP9, PTPN1, and SS18L1 were found to be significantly related to metastasis (P<0.05). Conclusions We characterized the mutational landscape of 38 GC patients and discovered several potential new predictive markers of survival and metastasis in GC.
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Affiliation(s)
- Zhenxin Zhu
- Department of Gastro-intestine Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Hongbing Fu
- Department of Gastro-intestine Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | | | - Xinxin Yu
- GenomiCare Biotechnology Co. Ltd., Shanghai, China
| | - Qing You
- Department of Gastro-intestine Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Mengyao Shi
- Department of Gastro-intestine Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Chun Dai
- GenomiCare Biotechnology Co. Ltd., Shanghai, China
| | - Guan Wang
- GenomiCare Biotechnology Co. Ltd., Shanghai, China
| | - Wei Cha
- Dental Department, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Weimin Wang
- Department of Gastro-intestine Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
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42
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Lang L, Loveless R, Teng Y. Emerging Links between Control of Mitochondrial Protein ATAD3A and Cancer. Int J Mol Sci 2020; 21:E7917. [PMID: 33113782 PMCID: PMC7663417 DOI: 10.3390/ijms21217917] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/22/2020] [Accepted: 10/23/2020] [Indexed: 12/17/2022] Open
Abstract
Spanning from the mitochondria's outer surface to the inner membrane, the nuclear-encoded protein ATAD3A maintains vital roles in regulating mitochondrial dynamics, homeostasis, metabolism, and interactions with the endoplasmic reticulum. Recently, elevated levels of ATAD3A have been reported in several types of cancer and to be tightly correlated with cancer development and progression, including increased cancer cell potential of proliferation, metastasis, and resistance to chemotherapy and radiotherapy. In the current review, we reveal ATAD3A as the link between mitochondrial functions and cancer biology and the accumulating evidence presenting ATAD3A as an attractive target for the development of novel cancer therapy to inhibit aberrant cancer metabolism and progression.
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Affiliation(s)
- Liwei Lang
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, Augusta, GA 30912, USA; (L.L.); (R.L.)
| | - Reid Loveless
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, Augusta, GA 30912, USA; (L.L.); (R.L.)
| | - Yong Teng
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, Augusta, GA 30912, USA; (L.L.); (R.L.)
- Georgia Cancer Center, Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA
- Department of Medical Laboratory, Imaging and Radiologic Sciences, College of Allied Health, Augusta University, Augusta, GA 30912, USA
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Frazier AE, Compton AG, Kishita Y, Hock DH, Welch AE, Amarasekera SSC, Rius R, Formosa LE, Imai-Okazaki A, Francis D, Wang M, Lake NJ, Tregoning S, Jabbari JS, Lucattini A, Nitta KR, Ohtake A, Murayama K, Amor DJ, McGillivray G, Wong FY, van der Knaap MS, Jeroen Vermeulen R, Wiltshire EJ, Fletcher JM, Lewis B, Baynam G, Ellaway C, Balasubramaniam S, Bhattacharya K, Freckmann ML, Arbuckle S, Rodriguez M, Taft RJ, Sadedin S, Cowley MJ, Minoche AE, Calvo SE, Mootha VK, Ryan MT, Okazaki Y, Stroud DA, Simons C, Christodoulou J, Thorburn DR. Fatal perinatal mitochondrial cardiac failure caused by recurrent de novo duplications in the ATAD3 locus. MED 2020; 2:49-73. [PMID: 33575671 DOI: 10.1016/j.medj.2020.06.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background In about half of all patients with a suspected monogenic disease, genomic investigations fail to identify the diagnosis. A contributing factor is the difficulty with repetitive regions of the genome, such as those generated by segmental duplications. The ATAD3 locus is one such region, in which recessive deletions and dominant duplications have recently been reported to cause lethal perinatal mitochondrial diseases characterized by pontocerebellar hypoplasia or cardiomyopathy, respectively. Methods Whole exome, whole genome and long-read DNA sequencing techniques combined with studies of RNA and quantitative proteomics were used to investigate 17 subjects from 16 unrelated families with suspected mitochondrial disease. Findings We report six different de novo duplications in the ATAD3 gene locus causing a distinctive presentation including lethal perinatal cardiomyopathy, persistent hyperlactacidemia, and frequently corneal clouding or cataracts and encephalopathy. The recurrent 68 Kb ATAD3 duplications are identifiable from genome and exome sequencing but usually missed by microarrays. The ATAD3 duplications result in the formation of identical chimeric ATAD3A/ATAD3C proteins, altered ATAD3 complexes and a striking reduction in mitochondrial oxidative phosphorylation complex I and its activity in heart tissue. Conclusions ATAD3 duplications appear to act in a dominant-negative manner and the de novo inheritance infers a low recurrence risk for families, unlike most pediatric mitochondrial diseases. More than 350 genes underlie mitochondrial diseases. In our experience the ATAD3 locus is now one of the five most common causes of nuclear-encoded pediatric mitochondrial disease but the repetitive nature of the locus means ATAD3 diagnoses may be frequently missed by current genomic strategies. Funding Australian NHMRC, US Department of Defense, Japanese AMED and JSPS agencies, Australian Genomics Health Alliance and Australian Mito Foundation.
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Affiliation(s)
- Ann E Frazier
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC 3052, Australia.,These authors contributed equally: A.E. Frazier, A.G. Compton
| | - Alison G Compton
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC 3052, Australia.,These authors contributed equally: A.E. Frazier, A.G. Compton
| | - Yoshihito Kishita
- Diagnostics and Therapeutics of Intractable Diseases, Intractable Disease Research Center, Juntendo University, Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Daniella H Hock
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Melbourne, VIC 3052, Australia
| | - AnneMarie E Welch
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - Sumudu S C Amarasekera
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC 3052, Australia
| | - Rocio Rius
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC 3052, Australia
| | - Luke E Formosa
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Melbourne, VIC 3800, Australia
| | - Atsuko Imai-Okazaki
- Diagnostics and Therapeutics of Intractable Diseases, Intractable Disease Research Center, Juntendo University, Graduate School of Medicine, Tokyo, 113-8421, Japan.,Division of Genomic Medicine Research, Medical Genomics Center, National Center for Global Health and Medicine, Tokyo 162-8655, Japan
| | - David Francis
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - Min Wang
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - Nicole J Lake
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC 3052, Australia.,Department of Genetics, Yale School of Medicine, New Haven, CT 06510, USA
| | - Simone Tregoning
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - Jafar S Jabbari
- Australian Genome Research Facility Ltd, Victorian Comprehensive Cancer Centre, Melbourne VIC 3052, Australia
| | - Alexis Lucattini
- Australian Genome Research Facility Ltd, Victorian Comprehensive Cancer Centre, Melbourne VIC 3052, Australia
| | - Kazuhiro R Nitta
- Diagnostics and Therapeutics of Intractable Diseases, Intractable Disease Research Center, Juntendo University, Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Akira Ohtake
- Department of Pediatrics & Clinical Genomics, Saitama Medical University Hospital, Saitama, 350-0495, Japan
| | - Kei Murayama
- Department of Metabolism, Chiba Children's Hospital, Chiba, 266-0007, Japan
| | - David J Amor
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC 3052, Australia
| | - George McGillivray
- Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - Flora Y Wong
- Ritchie Centre, Hudson Institute of Medical Research; Department of Paediatrics, Monash University; and Monash Newborn, Monash Children's Hospital, Melbourne, VIC 3168, Australia
| | - Marjo S van der Knaap
- Child Neurology, Emma Children's Hospital, Amsterdam University Medical Centers, Vrije Universiteit and Amsterdam Neuroscience, 1081 HV Amsterdam, The Netherlands.,Functional Genomics, Center for Neurogenomics and Cognitive Research, Vrije Universiteit and Amsterdam Neuroscience, 1081 HV Amsterdam, The Netherlands
| | - R Jeroen Vermeulen
- Department of Neurology, Maastricht University Medical Center, 6229 HX, Maastricht, The Netherlands
| | - Esko J Wiltshire
- Department of Paediatrics and Child Health, University of Otago Wellington and Capital and Coast District Health Board, Wellington 6021, New Zealand
| | - Janice M Fletcher
- Department of Genetics and Molecular Pathology, SA Pathology, Adelaide, SA 5000, Australia
| | - Barry Lewis
- Department of Clinical Biochemistry, PathWest Laboratory Medicine Western Australia, Nedlands, WA 6009, Australia
| | - Gareth Baynam
- Western Australian Register of Developmental Anomalies and Genetic Services of Western Australia and King Edward Memorial Hospital for Women Perth, Subiaco, WA 6008, Australia.,Telethon Kids Institute and School of Paediatrics and Child Health, The University of Western Australia, Perth, WA 6009, Australia
| | - Carolyn Ellaway
- Genetic Metabolic Disorders Service, Sydney Children's Hospital Network, The Children's Hospital at Westmead, Sydney, NSW 2145, Australia.,Disciplines of Genomic Medicine and Child and Adolescent Health, Sydney Medical School, University of Sydney, NSW 2145, Australia
| | - Shanti Balasubramaniam
- Genetic Metabolic Disorders Service, Sydney Children's Hospital Network, The Children's Hospital at Westmead, Sydney, NSW 2145, Australia
| | - Kaustuv Bhattacharya
- Genetic Metabolic Disorders Service, Sydney Children's Hospital Network, The Children's Hospital at Westmead, Sydney, NSW 2145, Australia.,Disciplines of Genomic Medicine and Child and Adolescent Health, Sydney Medical School, University of Sydney, NSW 2145, Australia
| | | | - Susan Arbuckle
- Department of Histopathology, The Children's Hospital at Westmead, Sydney Children's Hospital Network, Sydney, NSW 2145, Australia
| | - Michael Rodriguez
- Discipline of Pathology, School of Medical Sciences, The University of Sydney, Sydney, NSW 2006, Australia
| | | | - Simon Sadedin
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia
| | - Mark J Cowley
- Children's Cancer Institute, Kensington, NSW 2750, Australia; St Vincent's Clinical School, UNSW Sydney, Darlinghurst, NSW 2010, Australia.,Kinghorn Centre for Clinical Genomics, Garvan Institute of Medical Research, Darlinghurst, NSW 2010, Australia
| | - André E Minoche
- Kinghorn Centre for Clinical Genomics, Garvan Institute of Medical Research, Darlinghurst, NSW 2010, Australia
| | - Sarah E Calvo
- Broad Institute, Cambridge, MA 02142, USA; Howard Hughes Medical Institute and Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA; Harvard Medical School, Boston, MA 02446, USA
| | - Vamsi K Mootha
- Broad Institute, Cambridge, MA 02142, USA; Howard Hughes Medical Institute and Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA; Harvard Medical School, Boston, MA 02446, USA
| | - Michael T Ryan
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Melbourne, VIC 3800, Australia
| | - Yasushi Okazaki
- Diagnostics and Therapeutics of Intractable Diseases, Intractable Disease Research Center, Juntendo University, Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - David A Stroud
- Department of Biochemistry and Molecular Biology and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Melbourne, VIC 3052, Australia
| | - Cas Simons
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072 Australia
| | - John Christodoulou
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC 3052, Australia.,Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Disciplines of Genomic Medicine and Child and Adolescent Health, Sydney Medical School, University of Sydney, NSW 2145, Australia
| | - David R Thorburn
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, VIC 3052, Australia.,Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, VIC 3052, Australia.,Lead contact
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The S100B Protein and Partners in Adipocyte Response to Cold Stress and Adaptive Thermogenesis: Facts, Hypotheses, and Perspectives. Biomolecules 2020; 10:biom10060843. [PMID: 32486507 PMCID: PMC7356379 DOI: 10.3390/biom10060843] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/20/2020] [Accepted: 05/29/2020] [Indexed: 12/17/2022] Open
Abstract
In mammals, adipose tissue is an active secretory tissue that responds to mild hypothermia and as such is a genuine model to study molecular and cellular adaptive responses to cold-stress. A recent study identified a mammal-specific protein of the endoplasmic reticulum that is strongly induced in the inguinal subcutaneous white adipocyte upon exposure to cold, calsyntenin 3β (CLSTN3β). CLSTN3β regulates sympathetic innervation of thermogenic adipocytes and contributes to adaptive non-shivering thermogenesis. The calcium- and zinc-binding S100B is a downstream effector in the CLSTN3β pathways. We review, here, the literature on the transcriptional regulation of the S100b gene in adipocyte cells. We also rationalize the interactions of the S100B protein with its recognized or hypothesized intracellular (p53, ATAD3A, CYP2E1, AHNAK) and extracellular (Receptor for Advanced Glycation End products (RAGE), RPTPσ) target proteins in the context of adipocyte differentiation and adaptive thermogenesis. We highlight a chaperon-associated function for the intracellular S100B and point to functional synergies between the different intracellular S100B target proteins. A model of non-classical S100B secretion involving AHNAK/S100A10/annexin2-dependent exocytosis by the mean of exosomes is also proposed. Implications for related areas of research are noted and suggestions for future research are offered.
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45
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Glia maturation factor-γ regulates murine macrophage iron metabolism and M2 polarization through mitochondrial ROS. Blood Adv 2020; 3:1211-1225. [PMID: 30971398 DOI: 10.1182/bloodadvances.2018026070] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 02/16/2019] [Indexed: 12/19/2022] Open
Abstract
In macrophages, cellular iron metabolism status is tightly integrated with macrophage phenotype and associated with mitochondrial function. However, how molecular events regulate mitochondrial activity to integrate regulation of iron metabolism and macrophage phenotype remains unclear. Here, we explored the important role of the actin-regulatory protein glia maturation factor-γ (GMFG) in the regulation of cellular iron metabolism and macrophage phenotype. We found that GMFG was downregulated in murine macrophages by exposure to iron and hydrogen peroxide. GMFG knockdown altered the expression of iron metabolism proteins and increased iron levels in murine macrophages and concomitantly promoted their polarization toward an anti-inflammatory M2 phenotype. GMFG-knockdown macrophages exhibited moderately increased levels of mitochondrial reactive oxygen species (mtROS), which were accompanied by decreased expression of some mitochondrial respiration chain components, including the iron-sulfur cluster assembly scaffold protein ISCU as well as the antioxidant enzymes SOD1 and SOD2. Importantly, treatment of GMFG-knockdown macrophages with the antioxidant N-acetylcysteine reversed the altered expression of iron metabolism proteins and significantly inhibited the enhanced gene expression of M2 macrophage markers, suggesting that mtROS is mechanistically linked to cellular iron metabolism and macrophage phenotype. Finally, GMFG interacted with the mitochondrial membrane ATPase ATAD3A, suggesting that GMFG knockdown-induced mtROS production might be attributed to alteration of mitochondrial function in macrophages. Our findings suggest that GMFG is an important regulator in cellular iron metabolism and macrophage phenotype and could be a novel therapeutic target for modulating macrophage function in immune and metabolic disorders.
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46
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Divers J, Ma L, Brown WM, Palmer ND, Choi Y, Israni AK, Pastan SO, Julian BA, Gaston RS, Hicks PJ, Reeves-Daniel AM, Freedman BI. Genome-wide association study for time to failure of kidney transplants from African American deceased donors. Clin Transplant 2020; 34:e13827. [PMID: 32080893 DOI: 10.1111/ctr.13827] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 01/30/2020] [Accepted: 02/12/2020] [Indexed: 01/05/2023]
Abstract
Two renal-risk variants in the apolipoprotein L1 gene (APOL1) in African American (AA) deceased donors (DD) are associated with shorter renal allograft survival after transplantation. To identify additional genes contributing to allograft survival, a genome-wide association study was performed in 532 AA DDs. Phenotypic data were obtained from the Scientific Registry of Transplant Recipients. Association and single-nucleotide polymorphism (SNP)-by-APOL1 interaction tests were conducted using death-censored renal allograft survival accounting for relevant covariates. Replication and inverse-variance-weighted meta-analysis were performed using data from 250 AA DD in the Genomics of Transplantation study. Accounting for APOL1, multiple SNPs near the Nudix Hydrolase 7 gene (NUDT7) showed strong independent effects (P = 1.6 × 10-8 -2.2 × 10-8 ). Several SNPs in the Translocation protein SEC63 homolog (SEC63; P = 2 × 10-9 -3.7 × 10-8 ) and plasmacytoma variant translocation 1 (PVT1) genes (P = 4.0 × 10-8 -7 × 10-8 ) modified the effect of APOL1 on allograft survival. SEC63 is expressed in human renal tubule cells and glomeruli, and PVT1 is associated with diabetic kidney disease. Overall, associations were detected for 41 SNPs (P = 2 × 10-9 -5 × 10-8 ) contributing independently or interacting with APOL1 to impact renal allograft survival after transplantation from AA DD. Given the small sample size of the discovery and replication sets, independent validations and functional genomic efforts are needed to validate these results.
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Affiliation(s)
- Jasmin Divers
- Division of Health Services Research, Department of Foundations of Medicine, NYU Long Island School of Medicine and NYU Winthrop Research Institute, Mineola, NY, USA
| | - Lijun Ma
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - William Mark Brown
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Nicholette D Palmer
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Young Choi
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Ajay K Israni
- Department of Medicine, Hennepin Healthcare, University of Minnesota, Minneapolis, MN, USA
| | - Stephen O Pastan
- Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Bruce A Julian
- University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | - Robert S Gaston
- University of Alabama at Birmingham School of Medicine, Birmingham, AL, USA
| | - Pamela J Hicks
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Amber M Reeves-Daniel
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Barry I Freedman
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Winston-Salem, NC, USA
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Baudier J, Deloulme JC, Shaw GS. The Zn 2+ and Ca 2+ -binding S100B and S100A1 proteins: beyond the myths. Biol Rev Camb Philos Soc 2020; 95:738-758. [PMID: 32027773 DOI: 10.1111/brv.12585] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 01/06/2020] [Accepted: 01/20/2020] [Indexed: 12/17/2022]
Abstract
The S100 genes encode a conserved group of 21 vertebrate-specific EF-hand calcium-binding proteins. Since their discovery in 1965, S100 proteins have remained enigmatic in terms of their cellular functions. In this review, we summarize the calcium- and zinc-binding properties of the dimeric S100B and S100A1 proteins and highlight data that shed new light on the extracellular and intracellular regulation and functions of S100B. We point out that S100B and S100A1 homodimers are not functionally interchangeable and that in a S100A1/S100B heterodimer, S100A1 acts as a negative regulator for the ability of S100B to bind Zn2+ . The Ca2+ and Zn2+ -dependent interactions of S100B with a wide array of proteins form the basis of its activities and have led to the derivation of some initial rules for S100B recognition of protein targets. However, recent findings have strongly suggested that these rules need to be revisited. Here, we describe a new consensus S100B binding motif present in intracellular and extracellular vertebrate-specific proteins and propose a new model for stable interactions of S100B dimers with full-length target proteins. A chaperone-associated function for intracellular S100B in adaptive cellular stress responses is also discussed. This review may help guide future studies on the functions of S100 proteins in general.
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Affiliation(s)
- Jacques Baudier
- Institut de Biologie du Développement de Marseille-UMR CNRS 7288, Aix Marseille Université, 13288, Marseille Cedex 9, France
| | - Jean Christophe Deloulme
- Grenoble Institut des Neurosciences, INSERM U1216, Université Grenoble Alpes, 38000, Grenoble, France
| | - Gary S Shaw
- Department of Biochemistry, University of Western Ontario, London, Ontario, N6A5C1, Canada
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Gunning AC, Strucinska K, Muñoz Oreja M, Parrish A, Caswell R, Stals KL, Durigon R, Durlacher-Betzer K, Cunningham MH, Grochowski CM, Baptista J, Tysoe C, Baple E, Lahiri N, Homfray T, Scurr I, Armstrong C, Dean J, Fernandez Pelayo U, Jones AW, Taylor RW, Misra VK, Yoon WH, Wright CF, Lupski JR, Spinazzola A, Harel T, Holt IJ, Ellard S. Recurrent De Novo NAHR Reciprocal Duplications in the ATAD3 Gene Cluster Cause a Neurogenetic Trait with Perturbed Cholesterol and Mitochondrial Metabolism. Am J Hum Genet 2020; 106:272-279. [PMID: 32004445 PMCID: PMC7010973 DOI: 10.1016/j.ajhg.2020.01.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 01/10/2020] [Indexed: 11/16/2022] Open
Abstract
Recent studies have identified both recessive and dominant forms of mitochondrial disease that result from ATAD3A variants. The recessive form includes subjects with biallelic deletions mediated by non-allelic homologous recombination. We report five unrelated neonates with a lethal metabolic disorder characterized by cardiomyopathy, corneal opacities, encephalopathy, hypotonia, and seizures in whom a monoallelic reciprocal duplication at the ATAD3 locus was identified. Analysis of the breakpoint junction fragment indicated that these 67 kb heterozygous duplications were likely mediated by non-allelic homologous recombination at regions of high sequence identity in ATAD3A exon 11 and ATAD3C exon 7. At the recombinant junction, the duplication allele produces a fusion gene derived from ATAD3A and ATAD3C, the protein product of which lacks key functional residues. Analysis of fibroblasts derived from two affected individuals shows that the fusion gene product is expressed and stable. These cells display perturbed cholesterol and mitochondrial DNA organization similar to that observed for individuals with severe ATAD3A deficiency. We hypothesize that the fusion protein acts through a dominant-negative mechanism to cause this fatal mitochondrial disorder. Our data delineate a molecular diagnosis for this disorder, extend the clinical spectrum associated with structural variation at the ATAD3 locus, and identify a third mutational mechanism for ATAD3 gene cluster variants. These results further affirm structural variant mutagenesis mechanisms in sporadic disease traits, emphasize the importance of copy number analysis in molecular genomic diagnosis, and highlight some of the challenges of detecting and interpreting clinically relevant rare gene rearrangements from next-generation sequencing data.
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49
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Peralta S, González-Quintana A, Ybarra M, Delmiro A, Pérez-Pérez R, Docampo J, Arenas J, Blázquez A, Ugalde C, Martín MA. Novel ATAD3A recessive mutation associated to fatal cerebellar hypoplasia with multiorgan involvement and mitochondrial structural abnormalities. Mol Genet Metab 2019; 128:452-462. [PMID: 31727539 DOI: 10.1016/j.ymgme.2019.10.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/29/2019] [Accepted: 10/30/2019] [Indexed: 11/24/2022]
Abstract
Lethal neonatal encephalopathies are heterogeneous congenital disorders that can be caused by mitochondrial dysfunction. Biallelic large deletions in the contiguous ATAD3B and ATAD3A genes, encoding mitochondrial inner membrane ATPases of unknown function, as well as compound heterozygous nonsense and missense mutations in the ATAD3A gene have been recently associated with fatal neonatal cerebellar hypoplasia. In this work, whole exome sequencing (WES) identified the novel homozygous variant c.1217 T > G in ATAD3A, predicting a p.(Leu406Arg) substitution, in four siblings from a consanguineous family presenting with fatal neonatal cerebellar hypoplasia, seizures, axial hypotonia, hypertrophic cardiomyopathy, hepatomegaly, congenital cataract, and dysmorphic facies. Biochemical phenotypes of the patients included hyperlactatemia and hypocholesterolemia. Healthy siblings and parents were heterozygous for this variant, which is predicted to introduce a polar chain within the catalytic domain of ATAD3A that shortens its beta-sheet structure, presumably affecting protein stability. Accordingly, patient's fibroblasts with the homozygous variant displayed a specific reduction in ATAD3A protein levels associated with profound ultrastructural alterations of mitochondrial cristae and morphology. Our findings exclude the causative role of ATAD3B on this severe phenotype, expand the phenotypical spectrum of ATAD3A pathogenic variants and emphasize the vital role of ATAD3A in mitochondrial biogenesis.
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Affiliation(s)
- Susana Peralta
- Laboratorio de Enfermedades Raras, Mitocondriales y Neuromusculares, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
| | - Adrián González-Quintana
- Laboratorio de Enfermedades Raras, Mitocondriales y Neuromusculares, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, U723, 28029 Madrid, Spain
| | - Marta Ybarra
- Servicio de Neonatología, Hospital Infantil La Paz, 28046 Madrid, Spain
| | - Aitor Delmiro
- Laboratorio de Enfermedades Raras, Mitocondriales y Neuromusculares, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, U723, 28029 Madrid, Spain
| | - Rafael Pérez-Pérez
- Laboratorio de Enfermedades Raras, Mitocondriales y Neuromusculares, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
| | - Jorge Docampo
- Laboratorio de Enfermedades Raras, Mitocondriales y Neuromusculares, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, U723, 28029 Madrid, Spain
| | - Joaquín Arenas
- Laboratorio de Enfermedades Raras, Mitocondriales y Neuromusculares, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, U723, 28029 Madrid, Spain
| | - Alberto Blázquez
- Laboratorio de Enfermedades Raras, Mitocondriales y Neuromusculares, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, U723, 28029 Madrid, Spain
| | - Cristina Ugalde
- Laboratorio de Enfermedades Raras, Mitocondriales y Neuromusculares, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, U723, 28029 Madrid, Spain.
| | - Miguel A Martín
- Laboratorio de Enfermedades Raras, Mitocondriales y Neuromusculares, Instituto de Investigación Hospital 12 de Octubre (i+12), 28041 Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, U723, 28029 Madrid, Spain
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Ježek P, Dlasková A. Dynamic of mitochondrial network, cristae, and mitochondrial nucleoids in pancreatic β-cells. Mitochondrion 2019; 49:245-258. [DOI: 10.1016/j.mito.2019.06.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 06/21/2019] [Accepted: 06/24/2019] [Indexed: 12/17/2022]
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