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Muñoz-Oreja M, Sandoval A, Bruland O, Perez-Rodriguez D, Fernandez-Pelayo U, de Arbina AL, Villar-Fernandez M, Hernández-Eguiazu H, Hernández I, Park Y, Goicoechea L, Pascual-Frías N, Garcia-Ruiz C, Fernandez-Checa J, Martí-Carrera I, Gil-Bea FJ, Hasan MT, Gegg ME, Bredrup C, Knappskog PM, Gereñu-Lopetegui G, Varhaug KN, Bindoff LA, Spinazzola A, Yoon WH, Holt IJ. Elevated cholesterol in ATAD3 mutants is a compensatory mechanism that leads to membrane cholesterol aggregation. Brain 2024; 147:1899-1913. [PMID: 38242545 DOI: 10.1093/brain/awae018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/29/2023] [Accepted: 12/16/2023] [Indexed: 01/21/2024] Open
Abstract
Aberrant cholesterol metabolism causes neurological disease and neurodegeneration, and mitochondria have been linked to perturbed cholesterol homeostasis via the study of pathological mutations in the ATAD3 gene cluster. However, whether the cholesterol changes were compensatory or contributory to the disorder was unclear, and the effects on cell membranes and the wider cell were also unknown. Using patient-derived cells, we show that cholesterol perturbation is a conserved feature of pathological ATAD3 variants that is accompanied by an expanded lysosome population containing membrane whorls characteristic of lysosomal storage diseases. Lysosomes are also more numerous in Drosophila neural progenitor cells expressing mutant Atad3, which exhibit abundant membrane-bound cholesterol aggregates, many of which co-localize with lysosomes. By subjecting the Drosophila Atad3 mutant to nutrient restriction and cholesterol supplementation, we show that the mutant displays heightened cholesterol dependence. Collectively, these findings suggest that elevated cholesterol enhances tolerance to pathological ATAD3 variants; however, this comes at the cost of inducing cholesterol aggregation in membranes, which lysosomal clearance only partly mitigates.
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Affiliation(s)
- Mikel Muñoz-Oreja
- Department of Neurosciences, Biogipuzkoa Health Research Institute, 20014 San Sebastian, Spain
- University of the Basque Country-Bizkaia Campus, 48940 Bilbao, Spain
- CIBERNED (Center for Networked Biomedical Research on Neurodegenerative Diseases, Ministry of Economy and Competitiveness, Institute Carlos III), 28031 Madrid, Spain
| | - Abigail Sandoval
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Ove Bruland
- Department of Medical Genetics, Haukeland University Hospital, Bergen 5021, Norway
| | - Diego Perez-Rodriguez
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, Royal Free Campus, London NW3 2PF, UK
| | - Uxoa Fernandez-Pelayo
- Department of Neurosciences, Biogipuzkoa Health Research Institute, 20014 San Sebastian, Spain
| | - Amaia Lopez de Arbina
- Department of Neurosciences, Biogipuzkoa Health Research Institute, 20014 San Sebastian, Spain
| | - Marina Villar-Fernandez
- Department of Neurosciences, Biogipuzkoa Health Research Institute, 20014 San Sebastian, Spain
| | | | - Ixiar Hernández
- University of the Basque Country-Bizkaia Campus, 48940 Bilbao, Spain
| | - Yohan Park
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Leire Goicoechea
- Department of Cell Death and Proliferation, Institute of Biomedical Research of Barcelona (IIBB), CSIC, 08036 Barcelona, Spain
- Liver Unit, Hospital Clinic i Provincial de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red (CIBEREHD), 08036 Barcelona, Spain
| | - Nerea Pascual-Frías
- Department of Neurosciences, Biogipuzkoa Health Research Institute, 20014 San Sebastian, Spain
- Center for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 San Sebastian, Spain
| | - Carmen Garcia-Ruiz
- Department of Cell Death and Proliferation, Institute of Biomedical Research of Barcelona (IIBB), CSIC, 08036 Barcelona, Spain
- Liver Unit, Hospital Clinic i Provincial de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red (CIBEREHD), 08036 Barcelona, Spain
| | - Jose Fernandez-Checa
- Department of Cell Death and Proliferation, Institute of Biomedical Research of Barcelona (IIBB), CSIC, 08036 Barcelona, Spain
- Liver Unit, Hospital Clinic i Provincial de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red (CIBEREHD), 08036 Barcelona, Spain
- Research Center for ALPD, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Itxaso Martí-Carrera
- Department of Neurosciences, Biogipuzkoa Health Research Institute, 20014 San Sebastian, Spain
- University of the Basque Country-Bizkaia Campus, 48940 Bilbao, Spain
- CIBERNED (Center for Networked Biomedical Research on Neurodegenerative Diseases, Ministry of Economy and Competitiveness, Institute Carlos III), 28031 Madrid, Spain
- Pediatric Neurology, Hospital Universitario Donostia, 20014 San Sebastián, Spain
| | | | - Mazahir T Hasan
- Laboratory of Brain Circuits Therapeutics, Achucarro Basque Center for Neuroscience, Barrio Sarriena, s/n, E-48940 Leioa, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Matthew E Gegg
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, Royal Free Campus, London NW3 2PF, UK
| | - Cecilie Bredrup
- Department of Ophthalmology, Haukeland University Hospital, Bergen 5021, Norway
- Department of Clinical Medicine (K1), University of Bergen, Bergen 5020, Norway
| | | | - Gorka Gereñu-Lopetegui
- Department of Neurosciences, Biogipuzkoa Health Research Institute, 20014 San Sebastian, Spain
- University of the Basque Country-Bizkaia Campus, 48940 Bilbao, Spain
- CIBERNED (Center for Networked Biomedical Research on Neurodegenerative Diseases, Ministry of Economy and Competitiveness, Institute Carlos III), 28031 Madrid, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Kristin N Varhaug
- Department of Clinical Medicine (K1), University of Bergen, Bergen 5020, Norway
- Department of Neurology, Haukeland University Hospital, Bergen 5021, Norway
| | - Laurence A Bindoff
- Department of Ophthalmology, Haukeland University Hospital, Bergen 5021, Norway
- Department of Clinical Medicine (K1), University of Bergen, Bergen 5020, Norway
- Department of Neurology, Haukeland University Hospital, Bergen 5021, Norway
| | - Antonella Spinazzola
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, Royal Free Campus, London NW3 2PF, UK
| | - Wan Hee Yoon
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Ian J Holt
- Department of Neurosciences, Biogipuzkoa Health Research Institute, 20014 San Sebastian, Spain
- University of the Basque Country-Bizkaia Campus, 48940 Bilbao, Spain
- CIBERNED (Center for Networked Biomedical Research on Neurodegenerative Diseases, Ministry of Economy and Competitiveness, Institute Carlos III), 28031 Madrid, Spain
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, Royal Free Campus, London NW3 2PF, UK
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
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2
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Krishnamoorthy V, Foglizzo M, Dilley RL, Wu A, Datta A, Dutta P, Campbell LJ, Degtjarik O, Musgrove LJ, Calabrese AN, Zeqiraj E, Greenberg RA. The SPATA5-SPATA5L1 ATPase complex directs replisome proteostasis to ensure genome integrity. Cell 2024; 187:2250-2268.e31. [PMID: 38554706 PMCID: PMC11055677 DOI: 10.1016/j.cell.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 12/27/2023] [Accepted: 03/02/2024] [Indexed: 04/02/2024]
Abstract
Ubiquitin-dependent unfolding of the CMG helicase by VCP/p97 is required to terminate DNA replication. Other replisome components are not processed in the same fashion, suggesting that additional mechanisms underlie replication protein turnover. Here, we identify replisome factor interactions with a protein complex composed of AAA+ ATPases SPATA5-SPATA5L1 together with heterodimeric partners C1orf109-CINP (55LCC). An integrative structural biology approach revealed a molecular architecture of SPATA5-SPATA5L1 N-terminal domains interacting with C1orf109-CINP to form a funnel-like structure above a cylindrically shaped ATPase motor. Deficiency in the 55LCC complex elicited ubiquitin-independent proteotoxicity, replication stress, and severe chromosome instability. 55LCC showed ATPase activity that was specifically enhanced by replication fork DNA and was coupled to cysteine protease-dependent cleavage of replisome substrates in response to replication fork damage. These findings define 55LCC-mediated proteostasis as critical for replication fork progression and genome stability and provide a rationale for pathogenic variants seen in associated human neurodevelopmental disorders.
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Affiliation(s)
- Vidhya Krishnamoorthy
- Department of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6160, USA
| | - Martina Foglizzo
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Robert L Dilley
- Department of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6160, USA.
| | - Angela Wu
- Department of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6160, USA
| | - Arindam Datta
- Department of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6160, USA
| | - Parul Dutta
- Department of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6160, USA
| | - Lisa J Campbell
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Oksana Degtjarik
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Laura J Musgrove
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Antonio N Calabrese
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Elton Zeqiraj
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.
| | - Roger A Greenberg
- Department of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6160, USA.
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Tian J, Wen M, Gao P, Feng M, Wei G. RUVBL1 ubiquitination by DTL promotes RUVBL1/2-β-catenin-mediated transcriptional regulation of NHEJ pathway and enhances radiation resistance in breast cancer. Cell Death Dis 2024; 15:259. [PMID: 38609375 PMCID: PMC11015013 DOI: 10.1038/s41419-024-06651-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 02/04/2024] [Accepted: 04/05/2024] [Indexed: 04/14/2024]
Abstract
Radiotherapy effectiveness in breast cancer is limited by radioresistance. Nevertheless, the mechanisms behind radioresistance are not yet fully understood. RUVBL1 and RUVBL2, referred to as RUVBL1/2, are crucial AAA+ ATPases that act as co-chaperones and are connected to cancer. Our research revealed that RUVBL1, also known as pontin/TIP49, is excessively expressed in MMTV-PyMT mouse models undergoing radiotherapy, which is considered a murine spontaneous breast-tumor model. Our findings suggest that RUVBL1 enhances DNA damage repair and radioresistance in breast cancer cells both in vitro and in vivo. Mechanistically, we discovered that DTL, also known as CDT2 or DCAF2, which is a substrate adapter protein of CRL4, promotes the ubiquitination of RUVBL1 and facilitates its binding to RUVBL2 and transcription cofactor β-catenin. This interaction, in turn, attenuates its binding to acetyltransferase Tat-interacting protein 60 (TIP60), a comodulator of nuclear receptors. Subsequently, ubiquitinated RUVBL1 promotes the transcriptional regulation of RUVBL1/2-β-catenin on genes associated with the non-homologous end-joining (NHEJ) repair pathway. This process also attenuates TIP60-mediated H4K16 acetylation and the homologous recombination (HR) repair process. Expanding upon the prior study's discoveries, we exhibited that the ubiquitination of RUVBL1 by DTL advances the interosculation of RUVBL1/2-β-catenin. And, it then regulates the transcription of NHEJ repair pathway protein. Resulting in an elevated resistance of breast cancer cells to radiation therapy. From the aforementioned, it is evident that targeting DTL-RUVBL1/2-β-catenin provides a potential radiosensitization approach when treating breast cancer.
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Affiliation(s)
- Jie Tian
- Key Laboratory for Experimental Teratology of the Ministry of Education, Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Mingxin Wen
- Key Laboratory for Experimental Teratology of the Ministry of Education, Department of Human Anatomy, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Peng Gao
- Key Laboratory for Experimental Teratology of Ministry of Education, Department of Pathology, School of Basic Medical Sciences and Qilu Hospital, Shandong University, Jinan, Shandong, 250012, China
| | - Maoxiao Feng
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
| | - Guangwei Wei
- Key Laboratory for Experimental Teratology of the Ministry of Education, Department of Cell Biology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China.
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Mahadevan L, Arya H, Droste A, Schliebs W, Erdmann R, Kalel VC. PEX1 is essential for glycosome biogenesis and trypanosomatid parasite survival. Front Cell Infect Microbiol 2024; 14:1274506. [PMID: 38510966 PMCID: PMC10952002 DOI: 10.3389/fcimb.2024.1274506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 02/09/2024] [Indexed: 03/22/2024] Open
Abstract
Trypanosomatid parasites are kinetoplastid protists that compartmentalize glycolytic enzymes in unique peroxisome-related organelles called glycosomes. The heterohexameric AAA-ATPase complex of PEX1-PEX6 is anchored to the peroxisomal membrane and functions in the export of matrix protein import receptor PEX5 from the peroxisomal membrane. Defects in PEX1, PEX6 or their membrane anchor causes dysfunction of peroxisomal matrix protein import cycle. In this study, we functionally characterized a putative Trypanosoma PEX1 orthologue by bioinformatic and experimental approaches and show that it is a true PEX1 orthologue. Using yeast two-hybrid analysis, we demonstrate that TbPEX1 can bind to TbPEX6. Endogenously tagged TbPEX1 localizes to glycosomes in the T. brucei parasites. Depletion of PEX1 gene expression by RNA interference causes lethality to the bloodstream form trypanosomes, due to a partial mislocalization of glycosomal enzymes to the cytosol and ATP depletion. TbPEX1 RNAi leads to a selective proteasomal degradation of both matrix protein import receptors TbPEX5 and TbPEX7. Unlike in yeast, PEX1 depletion did not result in an accumulation of ubiquitinated TbPEX5 in trypanosomes. As PEX1 turned out to be essential for trypanosomatid parasites, it could provide a suitable drug target for parasitic diseases. The results also suggest that these parasites possess a highly efficient quality control mechanism that exports the import receptors from glycosomes to the cytosol in the absence of a functional TbPEX1-TbPEX6 complex.
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Affiliation(s)
| | | | | | | | - Ralf Erdmann
- Department of Systems Biochemistry, Faculty of Medicine, Institute for Biochemistry and Pathobiochemistry, Ruhr University Bochum, Bochum, Germany
| | - Vishal C. Kalel
- Department of Systems Biochemistry, Faculty of Medicine, Institute for Biochemistry and Pathobiochemistry, Ruhr University Bochum, Bochum, Germany
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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] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 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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Franchino CA, Brughera M, Baderna V, De Ritis D, Rocco A, Seneca S, Regal L, Podini P, D’Antonio M, Toro C, Quattrini A, Scalais E, Maltecca F. Sustained OMA1-mediated integrated stress response is beneficial for spastic ataxia type 5. Brain 2024; 147:1043-1056. [PMID: 37804316 PMCID: PMC10907083 DOI: 10.1093/brain/awad340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 08/28/2023] [Accepted: 09/12/2023] [Indexed: 10/09/2023] Open
Abstract
AFG3L2 is a mitochondrial protease exerting protein quality control in the inner mitochondrial membrane. Heterozygous AFG3L2 mutations cause spinocerebellar ataxia type 28 (SCA28) or dominant optic atrophy type 12 (DOA12), while biallelic AFG3L2 mutations result in the rare and severe spastic ataxia type 5 (SPAX5). The clinical spectrum of SPAX5 includes childhood-onset cerebellar ataxia, spasticity, dystonia and myoclonic epilepsy. We previously reported that the absence or mutation of AFG3L2 leads to the accumulation of mitochondria-encoded proteins, causing the overactivation of the stress-sensitive protease OMA1, which over-processes OPA1, leading to mitochondrial fragmentation. Recently, OMA1 has been identified as the pivotal player communicating mitochondrial stress to the cytosol via a pathway involving the inner mitochondrial membrane protein DELE1 and the cytosolic kinase HRI, thus eliciting the integrated stress response. In general, the integrated stress response reduces global protein synthesis and drives the expression of cytoprotective genes that allow cells to endure proteotoxic stress. However, the relevance of the OMA1-DELE1-HRI axis in vivo, and especially in a human CNS disease context, has been poorly documented thus far. In this work, we demonstrated that mitochondrial proteotoxicity in the absence/mutation of AFG3L2 activates the OMA1-DELE1-HRI pathway eliciting the integrated stress response. We found enhanced OMA1-dependent processing of DELE1 upon depletion of AFG3L2. Also, in both skin fibroblasts from SPAX5 patients (including a novel case) and in the cerebellum of Afg3l2-/- mice we detected increased phosphorylation of the α-subunit of the eukaryotic translation initiation factor 2 (eIF2α), increased levels of ATF4 and strong upregulation of its downstream targets (Chop, Chac1, Ppp1r15a and Ffg21). Silencing of DELE1 or HRI in SPAX5 fibroblasts (where OMA1 is overactivated at basal state) reduces eIF2α phosphorylation and affects cell growth. In agreement, pharmacological potentiation of integrated stress response via Sephin-1, a drug that selectively inhibits the stress-induced eIF2alpha phosphatase GADD34 (encoded by Ppp1r15a), improved cell growth of SPAX5 fibroblasts and cell survival and dendritic arborization ex vivo in primary Afg3l2-/- Purkinje neurons. Notably, Sephin-1 treatment in vivo extended the lifespan of Afg3l2-/- mice, improved Purkinje neuron morphology, mitochondrial ultrastructure and respiratory capacity. These data indicate that activation of the OMA1-DELE1-HRI pathway is protective in the context of SPAX5. Pharmacological tuning of the integrated stress response may represent a future therapeutic strategy for SPAX5 and other cerebellar ataxias caused by impaired mitochondrial proteostasis.
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Affiliation(s)
- Camilla Aurora Franchino
- Mitochondrial Dysfunctions in Neurodegeneration Unit, Division of Neuroscience, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Martina Brughera
- Mitochondrial Dysfunctions in Neurodegeneration Unit, Division of Neuroscience, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Valentina Baderna
- Mitochondrial Dysfunctions in Neurodegeneration Unit, Division of Neuroscience, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Daniele De Ritis
- Mitochondrial Dysfunctions in Neurodegeneration Unit, Division of Neuroscience, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Alessandra Rocco
- Mitochondrial Dysfunctions in Neurodegeneration Unit, Division of Neuroscience, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Sara Seneca
- Medical Center of Genetic, UZ-VUB, Vrije Universiteit Brussels, 1090 Brussels Jette, Belgium
| | - Luc Regal
- Pediatric Neurology and Metabolism, UZ-VUB, Vrije Universiteit Brussels, 1090 Brussels Jette, Belgium
| | - Paola Podini
- Experimental Neuropathology Unit, Division of Neuroscience and Institute of Experimental Neurology, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Maurizio D’Antonio
- Biology of Myelin Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Camilo Toro
- NIH Undiagnosed Diseases Program, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Angelo Quattrini
- Experimental Neuropathology Unit, Division of Neuroscience and Institute of Experimental Neurology, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Emmanuel Scalais
- Department of Pediatric, Division of Pediatric Neurology, Centre Hospitalier de Luxembourg, L1210 Luxembourg, Luxembourg
| | - Francesca Maltecca
- Mitochondrial Dysfunctions in Neurodegeneration Unit, Division of Neuroscience, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
- Università Vita-Salute San Raffaele, 20132 Milan, Italy
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7
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Gao X, Feng B, Du C, Hou C, Jin S, Tang D, Zhu J, Lv Y. Expression dynamics indicate the involvement of SPG7 in the reproduction and spermiogenesis of Phascolosoma esculenta. Gene 2024; 895:148028. [PMID: 38007160 DOI: 10.1016/j.gene.2023.148028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 11/17/2023] [Accepted: 11/22/2023] [Indexed: 11/27/2023]
Abstract
Spastic paraplegia 7 (SPG7) is an m-AAA protease subunit involved in mitochondrial morphology and physiology. However, its function in animal reproduction is yet to be evaluated. In this study, its molecular features, subcellular localization, and expression dynamics were investigated to analyze its potential function in the reproduction of male Phascolosoma esculenta, an economically important marine species in China. The full-length cDNA of P. esculenta spg7 (Pe-spg7) measures 3053 bp and encodes an 853-amino acid protein (Pe-SPG7). Pe-SPG7 includes two transmembrane domains, an AAA domain and a proteolytic domain. Amino acid sequence alignment revealed that SPG7 was conserved during evolution. The mRNA and protein expression of spg7 indicated its involvement in reproduction. Its expression was the highest in coelomic fluid, where spermatids develop, and it was significantly higher in the breeding stage than in the nonbreeding stage. SPG7 was mainly found in the mitochondria of spermatids in the coelomic fluid, indicating that it functions in this organelle in spermatids. Immunofluorescence experiments showed that SPG7 was expressed and colocalized in the mitochondria during spermiogenesis, suggesting its involvement in P. esculenta spermiogenesis. Therefore, SPG7 may participate in spermiogenesis by functioning in the mitochondria and regulate the reproduction of male P. esculenta. This study provided insights into the function of SPG7 in animal reproduction and P. esculenta gametogenesis.
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Affiliation(s)
- Xinming Gao
- Key Laboratory of Applied Marine Biotechnology by the Ministry of Education and Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China; College of Ecology, Lishui University, Lishui, Zhejiang, 323000, People's Republic of China
| | - Binbin Feng
- Key Laboratory of Applied Marine Biotechnology by the Ministry of Education and Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China
| | - Chen Du
- Key Laboratory of Applied Marine Biotechnology by the Ministry of Education and Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China
| | - Congcong Hou
- Key Laboratory of Applied Marine Biotechnology by the Ministry of Education and Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China
| | - Shan Jin
- Key Laboratory of Applied Marine Biotechnology by the Ministry of Education and Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China
| | - Daojun Tang
- Key Laboratory of Applied Marine Biotechnology by the Ministry of Education and Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China.
| | - Junquan Zhu
- Key Laboratory of Applied Marine Biotechnology by the Ministry of Education and Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China.
| | - Yaoping Lv
- College of Ecology, Lishui University, Lishui, Zhejiang, 323000, People's Republic of China.
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8
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Smart K, Sharp DJ. The fidgetin family: Shaking things up among the microtubule-severing enzymes. Cytoskeleton (Hoboken) 2024; 81:151-166. [PMID: 37823563 DOI: 10.1002/cm.21799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 10/13/2023]
Abstract
The microtubule cytoskeleton is required for several crucial cellular processes, including chromosome segregation, cell polarity and orientation, and intracellular transport. These functions rely on microtubule stability and dynamics, which are regulated by microtubule-binding proteins (MTBPs). One such type of regulator is the microtubule-severing enzymes (MSEs), which are ATPases Associated with Diverse Cellular Activities (AAA+ ATPases). The most recently identified family are the fidgetins, which contain three members: fidgetin, fidgetin-like 1 (FL1), and fidgetin-like 2 (FL2). Of the three known MSE families, the fidgetins have the most diverse range of functions in the cell, spanning mitosis/meiosis, development, cell migration, DNA repair, and neuronal function. Furthermore, they offer intriguing novel therapeutic targets for cancer, cardiovascular disease, and wound healing. In the two decades since their first report, there has been great progress in our understanding of the fidgetins; however, there is still much left unknown about this unusual family. This review aims to consolidate the present body of knowledge of the fidgetin family of MSEs and to inspire deeper exploration into the fidgetins and the MSEs as a whole.
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Affiliation(s)
- Karishma Smart
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - David J Sharp
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA
- Microcures, Inc., Bronx, New York, USA
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9
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Shen M, Zhang Y, Wu F, Shen M, Zhang S, Guo Y, Gan J, Wang R. Knockdown of hCINAP sensitizes colorectal cancer cells to ionizing radiation. Cell Cycle 2024; 23:233-247. [PMID: 38551450 PMCID: PMC11057657 DOI: 10.1080/15384101.2024.2309015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 11/08/2023] [Indexed: 05/01/2024] Open
Abstract
Colorectal cancer (CRC) poses a significant challenge in terms of treatment due to the prevalence of radiotherapy resistance. However, the underlying mechanisms responsible for radio-resistance in CRC have not been thoroughly explored. This study aimed to shed light on the role of human coilin interacting nuclear ATPase protein (hCINAP) in radiation-resistant HT-29 and SW480 CRC cells (HT-29-IR and SW480-IR) and investigate its potential implications. Firstly, radiation-resistant CRC cell lines were established by subjecting HT-29 and SW480 cells to sequential radiation exposure. Subsequent analysis revealed a notable increase in hCINAP expression in radiation-resistant CRC cells. To elucidate the functional role of hCINAP in radio-resistance, knockdown experiments were conducted. Remarkably, knockdown of hCINAP resulted in an elevation of reactive oxygen species (ROS) generation upon radiation treatment and subsequent activation of apoptosis mediated by mitochondria. These observations indicate that hCINAP depletion enhances the radiosensitivity of CRC cells. Conversely, when hCINAP was overexpressed, it was found to enhance the radio-resistance of CRC cells. This suggests that elevated hCINAP expression contributes to the development of radio-resistance. Further investigation revealed an interaction between hCINAP and ATPase family AAA domain containing 3A (ATAD3A). Importantly, ATAD3A was identified as an essential factor in hCINAP-mediated radio-resistance. These findings establish the involvement of hCINAP and its interaction with ATAD3A in the regulation of radio-resistance in CRC cells. Overall, the results of this study demonstrate that upregulating hCINAP expression may improve the survival of radiation-exposed CRC cells. Understanding the intricate molecular mechanisms underlying hCINAP function holds promise for potential strategies in targeted radiation therapy for CRC. These findings emphasize the importance of further research to gain a comprehensive understanding of hCINAP's precise molecular mechanisms and explore its potential as a therapeutic target in overcoming radio-resistance in CRC. By unraveling the complexities of hCINAP and its interactions, novel therapeutic approaches may be developed to enhance the efficacy of radiation therapy and improve outcomes for CRC patients.
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Affiliation(s)
- Meizhu Shen
- Department of Radiotheraphy, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yong Zhang
- Department of Radiotheraphy, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Fang Wu
- Department of Radiotheraphy, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Meizhen Shen
- Department of Radiotheraphy, People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Sen Zhang
- Department of Colorectal Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yun Guo
- Department of Colorectal Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jialiang Gan
- Department of Colorectal Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Rensheng Wang
- Department of Radiotheraphy, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
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10
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Olsen CG, Busk ØL, Holla ØL, Tveten K, Holmøy T, Tysnes OB, Høyer H. Genetic overlap between ALS and other neurodegenerative or neuromuscular disorders. Amyotroph Lateral Scler Frontotemporal Degener 2024; 25:177-187. [PMID: 37849306 DOI: 10.1080/21678421.2023.2270705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 10/03/2023] [Indexed: 10/19/2023]
Abstract
OBJECTIVE In Norway, 89% of patients with Amyotrophic lateral sclerosis (ALS) lacks a genetic diagnose. ALS genes and genes that cause other neuromuscular or neurodegenerative disorders extensively overlap. This population-based study examined whether patients with ALS have a family history of neurological disorders and explored the occurrence of rare genetic variants associated with other neurodegenerative or neuromuscular disorders. METHODS During a two-year period, blood samples and clinical data from patients with ALS were collected from all 17 neurological departments in Norway. Our genetic analysis involved exome sequencing and bioinformatics filtering of 510 genes associated with neurodegenerative and neuromuscular disorders. The variants were interpreted using genotype-phenotype correlations and bioinformatics tools. RESULTS A total of 279 patients from a Norwegian population-based ALS cohort participated in this study. Thirty-one percent of the patients had first- or second-degree relatives with other neurodegenerative disorders, most commonly dementia and Parkinson's disease. The genetic analysis identified 20 possible pathogenic variants, in ATL3, AFG3L2, ATP7A, BICD2, HARS1, KIF1A, LRRK2, MSTO1, NEK1, NEFH, and SORL1, in 25 patients. NEK1 risk variants were present in 2.5% of this ALS cohort. Only four of the 25 patients reported relatives with other neurodegenerative or neuromuscular disorders. CONCLUSION Gene variants known to cause other neurodegenerative or neuromuscular disorders, most frequently in NEK1, were identified in 9% of the patients with ALS. Most of these patients had no family history of other neurodegenerative or neuromuscular disorders. Our findings indicated that AFG3L2, ATP7A, BICD2, KIF1A, and MSTO1 should be further explored as potential ALS-causing genes.
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Affiliation(s)
- Cathrine Goberg Olsen
- Department of Medical Genetics, Telemark Hospital Trust, Skien, Norway
- Institute of Clinical Medicine, University of Oslo, Nordbyhagen, Norway
| | | | | | - Kristian Tveten
- Department of Medical Genetics, Telemark Hospital Trust, Skien, Norway
| | - Trygve Holmøy
- Institute of Clinical Medicine, University of Oslo, Nordbyhagen, Norway
- Department of Neurology, Akershus University Hospital, Lørenskog, Norway, and
| | - Ole-Bjørn Tysnes
- Department of Neurology, Haukeland University Hospital, Bergen, Norway
| | - Helle Høyer
- Department of Medical Genetics, Telemark Hospital Trust, Skien, Norway
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11
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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12
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Yang P, Zeng CZ, Tao XW, Rong SW, Long Y, Zeng LK. [Zellweger syndrome caused by PEX6 gene variation in 2 cases and literature review]. Zhonghua Er Ke Za Zhi 2024; 62:43-48. [PMID: 38154976 DOI: 10.3760/cma.j.cn112140-20230914-00191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Objective: To summarize the clinical features and genetic characteristics of Zellweger spectrum disorder caused by PEX6 gene variation. Methods: This was a case series research. Clinical date and genetic results of 2 neonatal cases of Zellweger syndrome caused by PEX6 gene variation in Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology and Affiliated Hospital of Guangdong Medical University from July 2021 to July 2022 were retrospectively collected and analyzed. Literature up to August 2023 was searched from electronic databases of China National Knowledge Infrastructure (CNKI), Wanfang Data and PubMed with the combined keywords of "Zellweger syndrome" "Zellweger spectrum disorder", and "PEX6 gene" both in Chinese and English. The main clinical features and genetic characteristics of Zellweger spectrum disorder caused by PEX6 gene variation were summarized. Results: The 2 male neonates both developed clinical manifestations as dyspnea, hypotonia, feeding difficulties, enlarged fontanelle, and high palatine arch after birth. Biochemical parameters indicated elevated bile acids, and the cranial ultrasound showed the enlarged bilateral ventricles and subependymal cyst in both 2 neonates. Zellweger syndrome was confirmed by whole exome sequencing, and the results revealed PEX6 gene variation in the 2 neonates, including compound heterozygous variants c.315G>A and c.2095-3T>G, and homozygous variant c.506_507del. Case 1 was hospitalized for 5 days, and case 2 for 32 days; they both died shortly after being discharged (the specific time is unknown). Literature review found 26 patients, including 2 neonates in this study, with Zellweger spectrum disorder caused by PEX6 gene defect reported in 1 Chinese article and 11 English articles. Clinical features included hearing loss (19 cases), developmental delay (19 cases), vision impairment (19 cases), elevated very long chain fatty acids (17 cases), brain malformations (15 cases), hypotonia (12 cases), hepatic insufficiency (12 cases), distinctive facies (10 cases), and dental impairment (9 cases). Compound heterozygous variations dominated the variation types (15 cases), and the frameshift variations (16 cases) were the main pathogenic variations. Conclusions: Zellweger spectrum disorder should be considered when neonates show hypotonia, feeding difficulty, distinctive facial appearance, brain malformations and failure of hearing screening, or when older children show retinitis pigmentosa, sensorineural hearing loss, amelogenesis imperfecta and developmental delays. Detection of genetic variation in the PEX gene is crucial for definitive diagnosis.
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Affiliation(s)
- P Yang
- School of Medicine, Department of Medicine, Wuhan University of Science and Technology, Wuhan 430000, China
| | - C Z Zeng
- Department of Pediatric Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, China
| | - X W Tao
- Division of Neonatology, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430000, China
| | - S W Rong
- Department of Pediatric Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, China
| | - Y Long
- Division of Neonatology, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430000, China
| | - L K Zeng
- Division of Neonatology, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430000, China
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13
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Torres JR, Botto JF, Sanchez DH. Canonical transcriptional gene silencing may contribute to long-term heat response and recovery through MOM1. Plant Cell Environ 2024; 47:372-382. [PMID: 37712454 DOI: 10.1111/pce.14722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 06/28/2023] [Accepted: 09/07/2023] [Indexed: 09/16/2023]
Abstract
Plant canonical transcriptional gene silencing (TGS) is involved in epigenetic mechanisms that mediate genomic imprinting and the suppression of transposable elements (TEs). It has been recognised that long-term heat disrupts epigenetic silencing, with the ensuing activation of TEs. However, the physiological involvement of the TGS machinery under prolonged high temperatures has not yet been established. Here, we performed non-lethal extended periodic heat stress and recovery treatments on Arabidopsis thaliana lines mutated on key TGS factors, analysing transcriptomic changes of coding-protein genes and TEs. Plants bearing MET1, DRM2 and CMT3, and MOM1 mutated alleles showed novel transcriptional properties compatible with functionalities concerning the induction/repression of partially shared or private heat-triggered transcriptome networks. Certain observations supported the idea that some responses are based on thermal de-silencing. TEs transcriptional activation uncovered the interaction with specific epigenetic layers, which may play dedicated suppressing roles under determinate physiological conditions such as heat. Furthermore, physiological experimentation suggested that MOM1 is required to resume growth after stress. Our data thus provide initial evidence that at least one canonical TGS factor may contribute to plant acclimation and recovery from non-lethal long-term heat despite the stress-induced epigenetic disturbance.
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Affiliation(s)
- José Roberto Torres
- IFEVA (CONICET-UBA), Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Javier F Botto
- IFEVA (CONICET-UBA), Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Diego H Sanchez
- IFEVA (CONICET-UBA), Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina
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Afaq F, Agarwal S, Bajpai P, Diffalha SA, Kim HG, Peter S, Khushman M, Chauhan SC, Mukherjee P, Varambally S, Manne U. Targeting of oncogenic AAA-ATPase TRIP13 reduces progression of pancreatic ductal adenocarcinoma. Neoplasia 2024; 47:100951. [PMID: 38039923 PMCID: PMC10716004 DOI: 10.1016/j.neo.2023.100951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/21/2023] [Accepted: 11/21/2023] [Indexed: 12/03/2023]
Abstract
Thyroid hormone receptor-interacting protein 13 (TRIP13) is involved in cancer progression, but its role in pancreatic ductal adenocarcinoma (PDAC) is unknown. Thus, we assessed the expression, functional role, and mechanism of action of TRIP13 in PDAC. We further examined the efficacy of TRIP13 inhibitor, DCZ0415, alone or in combination with gemcitabine on malignant phenotypes, tumor progression, and immune response. We found that TRIP13 was overexpressed in human PDACs relative to corresponding normal pancreatic tissues. TRIP13 knockdown or treatment of PDAC cells with DCZ0415 reduced proliferation and colony formation, and induced G2/M cell cycle arrest and apoptosis. Additionally, TRIP13 knockdown or targeting with DCZ0415 reduced the migration and invasion of PDAC cells by increasing E-cadherin and decreasing N-cadherin and vimentin. Pharmacologic targeting or silencing of TRIP13 also resulted in reduce expression of FGFR4 and STAT3 phosphorylation, and downregulation of the Wnt/β-catenin pathway. In immunocompromised mouse models of PDAC, knockdown of TRIP13 or treatment with DCZ0415 reduced tumor growth and metastasis. In an immunocompetent syngeneic PDAC model, DCZ0415 treatment enhanced the immune response by lowering expression of PD1/PDL1, increasing granzyme B/perforin expression, and facilitating infiltration of CD3/CD4 T-cells. Further, DCZ0415 potentiated the anti-metastatic and anti-tumorigenic activities of gemcitabine by reducing proliferation and angiogenesis and by inducing apoptosis and the immune response. These preclinical findings show that TRIP13 is involved in PDAC progression and targeting of TRIP13 augments the anticancer effect of gemcitabine.
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Affiliation(s)
- Farrukh Afaq
- Department of Pathology, University of Alabama at Birmingham, USA
| | - Sumit Agarwal
- Department of Pathology, University of Alabama at Birmingham, USA
| | - Prachi Bajpai
- Department of Pathology, University of Alabama at Birmingham, USA
| | - Sameer Al Diffalha
- Department of Pathology, University of Alabama at Birmingham, USA; O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, USA
| | - Hyung-Gyoon Kim
- Department of Pathology, University of Alabama at Birmingham, USA
| | - Shajan Peter
- Department of Medicine, Division of Gastroenterology, University of Alabama at Birmingham, USA
| | - Moh'd Khushman
- Department of Medicine, Division of Medical Oncology, Washington University in St. Louis, USA
| | - Subhash C Chauhan
- Department of Immunology and Microbiology, School of Medicine, University of Texas Rio Grande Valley, USA
| | - Priyabrata Mukherjee
- Department of Pathology, the University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Sooryanarayana Varambally
- Department of Pathology, University of Alabama at Birmingham, USA; O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, USA
| | - Upender Manne
- Department of Pathology, University of Alabama at Birmingham, USA; O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, USA.
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15
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Kawasoe Y, Shimokawa S, Gillespie PJ, Blow JJ, Tsurimoto T, Takahashi TS. The Atad5 RFC-like complex is the major unloader of proliferating cell nuclear antigen in Xenopus egg extracts. J Biol Chem 2024; 300:105588. [PMID: 38141767 PMCID: PMC10827553 DOI: 10.1016/j.jbc.2023.105588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/04/2023] [Accepted: 12/11/2023] [Indexed: 12/25/2023] Open
Abstract
Proliferating cell nuclear antigen (PCNA) is a homo-trimeric clamp complex that serves as the molecular hub for various DNA transactions, including DNA synthesis and post-replicative mismatch repair. Its timely loading and unloading are critical for genome stability. PCNA loading is catalyzed by Replication factor C (RFC) and the Ctf18 RFC-like complex (Ctf18-RLC), and its unloading is catalyzed by Atad5/Elg1-RLC. However, RFC, Ctf18-RLC, and even some subcomplexes of their shared subunits are capable of unloading PCNA in vitro, leaving an ambiguity in the division of labor in eukaryotic clamp dynamics. By using a system that specifically detects PCNA unloading, we show here that Atad5-RLC, which accounts for only approximately 3% of RFC/RLCs, nevertheless provides the major PCNA unloading activity in Xenopus egg extracts. RFC and Ctf18-RLC each account for approximately 40% of RFC/RLCs, while immunodepletion of neither Rfc1 nor Ctf18 detectably affects the rate of PCNA unloading in our system. PCNA unloading is dependent on the ATP-binding motif of Atad5, independent of nicks on DNA and chromatin assembly, and inhibited effectively by PCNA-interacting peptides. These results support a model in which Atad5-RLC preferentially unloads DNA-bound PCNA molecules that are free from their interactors.
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Affiliation(s)
| | - Sakiko Shimokawa
- Graduate School of Systems Life Sciences, Kyushu University, Fukuoka, Japan
| | - Peter J Gillespie
- Division of Molecular, Cell & Developmental Biology, School of Life Sciences, University of Dundee, Dundee, UK
| | - J Julian Blow
- Division of Molecular, Cell & Developmental Biology, School of Life Sciences, University of Dundee, Dundee, UK
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Miranda V, Cortez L, Rosmaninho-Salgado J, Ramos F, Paiva C. Ophthalmic Manifestations of Heimler Syndrome in Two Siblings With PEX1 Variants. J Pediatr Ophthalmol Strabismus 2024; 61:59-66. [PMID: 37092661 DOI: 10.3928/01913913-20230220-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
PURPOSE To report two new cases with confirmed diagnosis of Heimler syndrome and describe their systemic and ophthalmic phenotype and visual rehabilitation. METHODS Retrospective review of medical records. RESULTS Both siblings were diagnosed as having sensori-neural hearing loss and retinal dystrophy with exuberant intraretinal cystoid spaces and cone-rod dysfunction. The older sibling also had amelogenesis imperfecta and neither had nail abnormalities. Genetic analysis identified homozygosity for the pathogenic variant c.2528G>A p.(Gly843Asp) in the PEX1 gene in both siblings. The parents were heterozygous carriers of the variant. CONCLUSIONS The authors report a familial case of Heimler syndrome due to biallelic PEX1 pathogenic variants that manifested as macular dystrophy characterized by cone-rod dysfunction and complicated by intraretinal cystoid spaces. Review of the literature shows that ocular phenotype is variable in patients with Heimler syndrome. [J Pediatr Ophthalmol Strabismus. 2024;61(1):59-66.].
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17
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Xu Q, Zhou W, Zhou Y, Zhang X, Jiang R, Ai Z, Chen J, Ma L. IRX2 regulates endometrial carcinoma oncogenesis by transcriptional repressing RUVBL1. Exp Cell Res 2024; 434:113866. [PMID: 38042247 DOI: 10.1016/j.yexcr.2023.113866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/24/2023] [Accepted: 11/25/2023] [Indexed: 12/04/2023]
Abstract
Endometrial carcinoma (EC) is a rising concern among gynecological malignancies. Iroquois Homeobox 2 (IRX2), a member of the Iroquois homeobox gene family, demonstrates variable effects in different cancer types, emphasizing the need for extensive exploration of its involvement in EC progression. Utilizing TCGA and GEO databases, as well as performing immunohistochemistry (IHC) analysis on clinical samples, we assessed the expression levels of IRX2 and its promoter methylation in EC. To understand the functional roles of IRX2, we conducted various assays including in vitro CCK-8 assays, colony formation assays, cell invasion assays, and cell apoptosis assays. Moreover, we utilized in vivo subcutaneous xenograft mouse models. Additionally, we performed KEGG pathway and gene set enrichment analyses to gain insights into the underlying mechanisms. To validate the regulatory relationship between IRX2 and RUVBL1, we employed chromatin immunoprecipitation and luciferase reporter assays. Our results indicate significantly reduced levels of IRX2 expression in EC, correlating with higher histological grades, advanced clinical stages, and diminished overall survival. We observed that DNA methylation of the IRX2 promoter suppresses its expression in EC, with cg26333652 and cg11793269 playing critical roles as methylated sites. In contrast, ectopic overexpression of IRX2 substantially inhibits cell proliferation and invasion, and promotes cell apoptosis. Additionally, we discovered that IRX2 exerts negative regulation on the expression of RUVBL1, which is upregulated in EC and associated with a poorer prognosis. In conclusion, our findings indicate that decreased expression of IRX2 facilitates EC cell growth through the regulation of RUVBL1 expression, thereby contributing to the development of EC. Hence, targeting the IRX2-RUVBL1 axis holds promise as a potential therapeutic strategy for EC treatment.
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Affiliation(s)
- Qinyang Xu
- Department of Gynecology and Obstetrics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wanzhen Zhou
- Department of Gynecology and Obstetrics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuedi Zhou
- Department of Gynecology and Obstetrics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xueying Zhang
- Department of Gynecology and Obstetrics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rongzhen Jiang
- Department of Gynecology and Obstetrics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhihong Ai
- Department of Gynecology and Obstetrics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing Chen
- Department of Gynecology and Obstetrics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Li Ma
- Department of Gynecology and Obstetrics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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18
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Henriksen C, Baek KT, Wacnik K, Gallay C, Veening JW, Foster SJ, Frees D. The ClpX chaperone and a hypermorphic FtsA variant with impaired self-interaction are mutually compensatory for coordinating Staphylococcus aureus cell division. Mol Microbiol 2024; 121:98-115. [PMID: 38041395 DOI: 10.1111/mmi.15200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/13/2023] [Accepted: 11/13/2023] [Indexed: 12/03/2023]
Abstract
Bacterial cell division requires the coordinated assembly and disassembly of a large protein complex called the divisome; however, the exact role of molecular chaperones in this critical process remains unclear. We here provide genetic evidence that ClpX unfoldase activity is a determinant for proper coordination of bacterial cell division by showing the growth defect of a Staphylococcus aureus clpX mutant is rescued by a spontaneously acquired G325V substitution in the ATP-binding domain of the essential FtsA cell division protein. The polymerization state of FtsA is thought to control initiation of bacterial septum synthesis and, while restoring the aberrant FtsA dynamics in clpX cells, the FtsAG325V variant displayed reduced ability to interact with itself and other cell division proteins. In wild-type cells, the ftsAG325V allele shared phenotypes with Escherichia coli superfission ftsA mutants and accelerated the cell cycle, increased the risk of daughter cell lysis, and conferred sensitivity to heat and antibiotics inhibiting cell wall synthesis. Strikingly, lethality was mitigated by spontaneous mutations that inactivate ClpX. Taken together, our results suggest that ClpX promotes septum synthesis by antagonizing FtsA interactions and illuminates the critical role of a protein unfoldase in coordinating bacterial cell division.
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Affiliation(s)
- Camilla Henriksen
- Department of Veterinary and Animal Disease, University of Copenhagen, Frederiksberg, Denmark
| | - Kristoffer T Baek
- Department of Veterinary and Animal Disease, University of Copenhagen, Frederiksberg, Denmark
| | | | - Clement Gallay
- Department of Fundamental Microbiology, University of Lausanne, Lausanne, Switzerland
| | - Jan-Willem Veening
- Department of Fundamental Microbiology, University of Lausanne, Lausanne, Switzerland
| | - Simon J Foster
- School of Biosciences, University of Sheffield, Sheffield, UK
| | - Dorte Frees
- Department of Veterinary and Animal Disease, University of Copenhagen, Frederiksberg, Denmark
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19
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Ma Y, Jia T, Qin F, He Y, Han F, Zhang C. Abnormal Brain Protein Abundance and Cross-tissue mRNA Expression in Amyotrophic Lateral Sclerosis. Mol Neurobiol 2024; 61:510-518. [PMID: 37639066 PMCID: PMC10791788 DOI: 10.1007/s12035-023-03587-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 08/13/2023] [Indexed: 08/29/2023]
Abstract
Due to the limitations of the present risk genes in understanding the etiology of amyotrophic lateral sclerosis (ALS), it is necessary to find additional causative genes utilizing novel approaches. In this study, we conducted a two-stage proteome-wide association study (PWAS) using ALS genome-wide association study (GWAS) data (N = 152,268) and two distinct human brain protein quantitative trait loci (pQTL) datasets (ROSMAP N = 376 and Banner N = 152) to identify ALS risk genes and prioritized candidate genes with Mendelian randomization (MR) and Bayesian colocalization analysis. Next, we verified the aberrant expression of risk genes in multiple tissues, including lower motor neurons, skeletal muscle, and whole blood. Six ALS risk genes (SCFD1, SARM1, TMEM175, BCS1L, WIPI2, and DHRS11) were found during the PWAS discovery phase, and SARM1 and BCS1L were confirmed during the validation phase. The following MR (p = 2.10 × 10-7) and Bayesian colocalization analysis (ROSMAP PP4 = 0.999, Banner PP4 = 0.999) confirmed the causal association between SARM1 and ALS. Further differential expression analysis revealed that SARM1 was markedly downregulated in lower motor neurons (p = 7.64 × 10-3), skeletal muscle (p = 9.34 × 10-3), and whole blood (p = 1.94 × 10-3). Our findings identified some promising protein candidates for future investigation as therapeutic targets. The dysregulation of SARM1 in multiple tissues provides a new way to explain ALS pathology.
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Affiliation(s)
- Yanni Ma
- Mental Health Center and Psychiatric Laboratory, The State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610041, Sichuan, China
| | - Tingting Jia
- Mental Health Center and Psychiatric Laboratory, The State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610041, Sichuan, China
| | - Fengqin Qin
- Department of Neurology, The 3Rd Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
| | - Yongji He
- Clinical Trial Center, National Medical Products Administration Key Laboratory for Clinical Research and Evaluation of Innovative Drugs, West China Hospital Sichuan University, Chengdu, People's Republic of China
| | - Feng Han
- Department of Emergency Medicine, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Chengcheng Zhang
- Mental Health Center and Psychiatric Laboratory, The State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, 610041, Sichuan, China.
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20
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Li Z, Hu O, Xu S, Lin C, Yu W, Ma D, Lu J, Liu P. The SIRT3-ATAD3A axis regulates MAM dynamics and mitochondrial calcium homeostasis in cardiac hypertrophy. Int J Biol Sci 2024; 20:831-847. [PMID: 38250153 PMCID: PMC10797690 DOI: 10.7150/ijbs.89253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 11/18/2023] [Indexed: 01/23/2024] Open
Abstract
Mitochondria are energy-producing organelles that are mobile and harbor dynamic network structures. Although mitochondria and endoplasmic reticulum (ER) play distinct cellular roles, they are physically connected to maintain functional homeostasis. Abnormal changes in this interaction have been linked to pathological states, including cardiac hypertrophy. However, the exact regulatory molecules and mechanisms are yet to be elucidated. Here, we report that ATPase family AAA-domain containing protein 3A (ATAD3A) is an essential regulator of ER-mitochondria interplay within the mitochondria-associated membrane (MAM). ATAD3A prevents isoproterenol (ISO)-induced mitochondrial calcium accumulation, improving mitochondrial dysfunction and ER stress, which preserves cardiac function and attenuates cardiac hypertrophy. We also find that ATAD3A is a new substrate of NAD+-dependent deacetylase Sirtuin 3 (SIRT3). Notably, the heart mitochondria of SIRT3 knockout mice exhibited excessive formation of MAMs. Mechanistically, ATAD3A specifically undergoes acetylation, which reduces self-oligomerization and promotes cardiac hypertrophy. ATAD3A oligomerization is disrupted by acetylation at K134 site, and ATAD3A monomer closely interacts with the IP3R1-GRP75-VDAC1 complex, which leads to mitochondrial calcium overload and dysfunction. In summary, ATAD3A localizes to the MAMs, where it protects the homeostasis of ER-mitochondria contacts, quenching mitochondrial calcium overload and keeping mitochondrial bioenergetics unresponsive to ER stress. The SIRT3-ATAD3A axis represents a potential therapeutic target for cardiac hypertrophy.
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Affiliation(s)
- Zeyu Li
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Ou Hu
- Guangdong Province Engineering Laboratory for Druggability and New Drug Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Suowen Xu
- Department of Endocrinology, Institute of Endocrine and Metabolic Diseases, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Clinical Research Hospital of Chinese Academy of Sciences (Hefei), University of Science and Technology of China, Hefei, 230001, China
| | - Chenjia Lin
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Wenjing Yu
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Dinghu Ma
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Jing Lu
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Peiqing Liu
- National and Local United Engineering Lab of Druggability and New Drugs Evaluation, Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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21
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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22
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Li T, Chen WJ, Zhang YQ, Liu W, Lin N, Liu XT. [Identification and validation of novel biomarkers for cold-dampness syndrome of rheumatoid arthritis based on integration of multiple bioinformatics methods]. Zhongguo Zhong Yao Za Zhi 2023; 48:6721-6729. [PMID: 38212032 DOI: 10.19540/j.cnki.cjcmm.20231105.401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
This study aims to identify the novel biomarkers of cold-dampness syndrome(RA-Cold) of rheumatoid arthritis(RA) by gene set enrichment analysis(GSEA), weighted gene correlation network analysis(WGCNA), and clinical validation. Firstly, transcriptome sequencing was carried out for the whole blood samples from RA-Cold patients, RA patients with other traditional Chinese medicine(TCM) syndromes, and healthy volunteers. The differentially expressed gene(DEG) sets of RA-Cold were screened by comparison with the RA patients with other TCM syndromes and healthy volunteers. Then, GSEA and WGCNA were carried out to screen the key DEGs as candidate biomarkers for RA-Cold. Experimentally, the expression levels of the candidate biomarkers were determined by RT-qPCR for an independent clinical cohort(not less than 10 cases/group), and the clinical efficacy of the candidates was assessed using the receiver operating characteristic(ROC) curve. The results showed that 3 601 DEGs associated with RA-Cold were obtained, including 106 up-regulated genes and 3 495 down-regulated genes. The DEGs of RA-Cold were mainly enriched in the pathways associated with inflammation-immunity regulation, hormone regulation, substance and energy metabolism, cell function regulation, and synovial pannus formation. GSEA and WGCNA showed that recombinant proteasome 26S subunit, ATPase 2(PSMC2), which ranked in the top 50% in terms of coefficient of variation, representativeness of pathway, and biological modules, was a candidate biomarker of RA-Cold. Furthermore, the validation results based on the clinical independent sample set showed that the F1 value, specificity, accuracy, and precision of PSMC2 for RA-Cold were 70.3%, 61.9%, 64.5%, and 81.3%, respectively, and the area under the curve(AUC) value was 0.96. In summary, this study employed the "GSEA-WGCNA-validation" integrated strategy to identify novel biomarkers of RA-Cold, which helped to improve the TCM clinical diagnosis and treatment of core syndromes in RA and provided an experimental basis for TCM syndrome differentiation.
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Affiliation(s)
- Tao Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences Beijing 100700, China
| | - Wen-Jia Chen
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences Beijing 100700, China
| | - Yan-Qiong Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences Beijing 100700, China
| | - Wei Liu
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine Tianjin 300193, China
| | - Na Lin
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences Beijing 100700, China
| | - Xue-Ting Liu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences Beijing 100700, China
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23
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Colucci F, Neri M, Fortunato F, Ferlini A, Carrozzo R, Torraco A, Lamantea E, Legati A, Tecilla G, Pugliatti M, Sensi M. AFG3L2 Biallelic Mutation: Clinical Heterogeneity in Two Italian Patients. Cerebellum 2023; 22:1313-1319. [PMID: 36447112 DOI: 10.1007/s12311-022-01497-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/21/2022] [Indexed: 12/02/2022]
Abstract
AFG3-like matrix AAA peptidase subunit 2 gene (AFG3L2, OMIM * 604,581) biallelic mutations lead to autosomal recessive spastic ataxia-5 SPAX5, OMIM # 614,487), a rare hereditary form of ataxia. The clinical spectrum includes early-onset cerebellar ataxia, spasticity, and progressive myoclonic epilepsy (PME). In Italy, the epidemiology of the disease is probably underestimated. The advent of next generation sequencing (NGS) technologies has speeded up the diagnosis of hereditary diseases and increased the percentage of diagnosis of rare disorders, such as the rare hereditary ataxia groups. Here, we describe two patients from two different villages in the province of Ferrara, who manifested a different clinical ataxia-plus history, although carrying the same biallelic mutation in AFG3L2 (p.Met625Ile) identified through NGS analysis.
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Affiliation(s)
- Fabiana Colucci
- Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy.
- Department of Neuroscience and Rehabilitation, Azienda Ospedaliero-Universitaria S. Anna, Ferrara, Italy.
| | - Marcella Neri
- Department of Medical Sciences, Unit of Medical Genetics, Universita Degli Studi Di Ferrara, Ferrara, Italy
| | - Fernanda Fortunato
- Department of Medical Sciences, Unit of Medical Genetics, Universita Degli Studi Di Ferrara, Ferrara, Italy
| | - Alessandra Ferlini
- Department of Medical Sciences, Unit of Medical Genetics, Universita Degli Studi Di Ferrara, Ferrara, Italy
| | - Rosalba Carrozzo
- Unit of Muscular and Neurodegenerative Disorders, Laboratory of Molecular Medicine, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Alessandra Torraco
- Unit of Muscular and Neurodegenerative Disorders, Laboratory of Molecular Medicine, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Eleonora Lamantea
- Unit of Medical Genetics and Neurogenetics, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Andrea Legati
- Unit of Medical Genetics and Neurogenetics, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Ginevra Tecilla
- Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy
| | - Maura Pugliatti
- Department of Neuroscience and Rehabilitation, University of Ferrara, Ferrara, Italy
| | - Mariachiara Sensi
- Department of Neuroscience and Rehabilitation, Azienda Ospedaliero-Universitaria S. Anna, Ferrara, Italy
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24
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Yu M, Zhang M, Chen Q, Huang T, Gan R, Yan X. A novel compound heterozygous PEX1 variant in Heimler syndrome. Exp Eye Res 2023; 237:109688. [PMID: 37871882 DOI: 10.1016/j.exer.2023.109688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 10/14/2023] [Accepted: 10/20/2023] [Indexed: 10/25/2023]
Abstract
Heimler syndrome (HS) is a rare autosomal recessive hereditary disease that is caused by biallelic variants in peroxisomal biogenic factor 1 gene (PEX1), peroxisomal biogenic factor 6 gene (PEX6) or peroxisomal biogenic factor 26 gene (PEX26), resulting in intracellular peroxisomal dysfunction (PBDs). We report a patient with HS with a new compound heterozygous PEX1 variant. Exon sequencing was used to screen pathologic variants in the patient. Retinal characteristics and serum metabolome alterations were evaluated. Scanning laser ophthalmoscope showed a large area of retinal choroidal atrophy at the posterior pole of the retina, with scattered patchy subretinal pigmentation. Optical coherence tomography showed fovea atrophy accompanied by retinal retinoschisis in the right eye and macular retinoschisis and edema in the left eye. The electroretinogram showed obviously reduced amplitudes of a-waves and b-waves under photopic and scotopic conditions in both eyes. Visual field tests showed a reduced central visual field in both eyes. Exon sequencing identified the compound heterozygous variant including c.2966T > C and c.1670+1G > T of the PEX1 gene, with the latter being novel. Nontargeted determination of total lipid metabolites and targeted determination of medium- and long-chain fatty acids in the serum of the patient and his healthy sibling were tested. This study identified a new compound heterozygous PEX1 variant, expanding our understanding of phenotypes in HS.
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Affiliation(s)
- Mingyu Yu
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Min Zhang
- School of Medicine, Anhui University of Science and Technology, Huainan, China
| | - Qingshan Chen
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Tao Huang
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Run Gan
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China
| | - Xiaohe Yan
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen, China.
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25
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Liu Y, Liu S, Tomar A, Yen FS, Unlu G, Ropek N, Weber RA, Wang Y, Khan A, Gad M, Peng J, Terzi E, Alwaseem H, Pagano AE, Heissel S, Molina H, Allwein B, Kenny TC, Possemato RL, Zhao L, Hite RK, Vinogradova EV, Mansy SS, Birsoy K. Autoregulatory control of mitochondrial glutathione homeostasis. Science 2023; 382:820-828. [PMID: 37917749 DOI: 10.1126/science.adf4154] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 10/18/2023] [Indexed: 11/04/2023]
Abstract
Mitochondria must maintain adequate amounts of metabolites for protective and biosynthetic functions. However, how mitochondria sense the abundance of metabolites and regulate metabolic homeostasis is not well understood. In this work, we focused on glutathione (GSH), a critical redox metabolite in mitochondria, and identified a feedback mechanism that controls its abundance through the mitochondrial GSH transporter, SLC25A39. Under physiological conditions, SLC25A39 is rapidly degraded by mitochondrial protease AFG3L2. Depletion of GSH dissociates AFG3L2 from SLC25A39, causing a compensatory increase in mitochondrial GSH uptake. Genetic and proteomic analyses identified a putative iron-sulfur cluster in the matrix-facing loop of SLC25A39 as essential for this regulation, coupling mitochondrial iron homeostasis to GSH import. Altogether, our work revealed a paradigm for the autoregulatory control of metabolic homeostasis in organelles.
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Affiliation(s)
- Yuyang Liu
- Laboratory of Metabolic Regulation and Genetics, The Rockefeller University, New York, NY, USA
| | - Shanshan Liu
- Laboratory of Metabolic Regulation and Genetics, The Rockefeller University, New York, NY, USA
| | - Anju Tomar
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
- Department of Cellular, Computational and Integrative Biology, Università di Trento, Trento, TN, Italy
| | - Frederick S Yen
- Laboratory of Metabolic Regulation and Genetics, The Rockefeller University, New York, NY, USA
| | - Gokhan Unlu
- Laboratory of Metabolic Regulation and Genetics, The Rockefeller University, New York, NY, USA
| | - Nathalie Ropek
- Laboratory of Chemical Immunology and Proteomics, The Rockefeller University, New York, NY, USA
| | - Ross A Weber
- Laboratory of Metabolic Regulation and Genetics, The Rockefeller University, New York, NY, USA
| | - Ying Wang
- Laboratory of Metabolic Regulation and Genetics, The Rockefeller University, New York, NY, USA
| | - Artem Khan
- Laboratory of Metabolic Regulation and Genetics, The Rockefeller University, New York, NY, USA
| | - Mark Gad
- Laboratory of Metabolic Regulation and Genetics, The Rockefeller University, New York, NY, USA
- Structural Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Junhui Peng
- Laboratory of Evolutionary Genetics and Genomics, The Rockefeller University, New York, NY, USA
| | - Erdem Terzi
- Department of Pathology, New York University Grossman School of Medicine, New York, NY, USA
| | - Hanan Alwaseem
- The Proteomics Resource Center, The Rockefeller University, New York, NY, USA
| | - Alexandra E Pagano
- The Proteomics Resource Center, The Rockefeller University, New York, NY, USA
| | - Søren Heissel
- The Proteomics Resource Center, The Rockefeller University, New York, NY, USA
| | - Henrik Molina
- The Proteomics Resource Center, The Rockefeller University, New York, NY, USA
| | - Benjamin Allwein
- Structural Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Timothy C Kenny
- Laboratory of Metabolic Regulation and Genetics, The Rockefeller University, New York, NY, USA
| | - Richard L Possemato
- Department of Pathology, New York University Grossman School of Medicine, New York, NY, USA
| | - Li Zhao
- Laboratory of Evolutionary Genetics and Genomics, The Rockefeller University, New York, NY, USA
| | - Richard K Hite
- Structural Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ekaterina V Vinogradova
- Laboratory of Chemical Immunology and Proteomics, The Rockefeller University, New York, NY, USA
| | - Sheref S Mansy
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Kıvanç Birsoy
- Laboratory of Metabolic Regulation and Genetics, The Rockefeller University, New York, NY, USA
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26
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Ghanbarpour A, Cohen SE, Fei X, Kinman LF, Bell TA, Zhang JJ, Baker TA, Davis JH, Sauer RT. A closed translocation channel in the substrate-free AAA+ ClpXP protease diminishes rogue degradation. Nat Commun 2023; 14:7281. [PMID: 37949857 PMCID: PMC10638403 DOI: 10.1038/s41467-023-43145-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/01/2023] [Indexed: 11/12/2023] Open
Abstract
AAA+ proteases degrade intracellular proteins in a highly specific manner. E. coli ClpXP, for example, relies on a C-terminal ssrA tag or other terminal degron sequences to recognize proteins, which are then unfolded by ClpX and subsequently translocated through its axial channel and into the degradation chamber of ClpP for proteolysis. Prior cryo-EM structures reveal that the ssrA tag initially binds to a ClpX conformation in which the axial channel is closed by a pore-2 loop. Here, we show that substrate-free ClpXP has a nearly identical closed-channel conformation. We destabilize this closed-channel conformation by deleting residues from the ClpX pore-2 loop. Strikingly, open-channel ClpXP variants degrade non-native proteins lacking degrons faster than the parental enzymes in vitro but degraded GFP-ssrA more slowly. When expressed in E. coli, these open channel variants behave similarly to the wild-type enzyme in assays of filamentation and phage-Mu plating but resulted in reduced growth phenotypes at elevated temperatures or when cells were exposed to sub-lethal antibiotic concentrations. Thus, channel closure is an important determinant of ClpXP degradation specificity.
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Affiliation(s)
- Alireza Ghanbarpour
- Department of Biology Massachusetts Institute of Technology Cambridge, Cambridge, MA, 02139, USA
| | - Steven E Cohen
- Department of Biology Massachusetts Institute of Technology Cambridge, Cambridge, MA, 02139, USA
| | - Xue Fei
- Department of Biology Massachusetts Institute of Technology Cambridge, Cambridge, MA, 02139, USA
| | - Laurel F Kinman
- Department of Biology Massachusetts Institute of Technology Cambridge, Cambridge, MA, 02139, USA
| | - Tristan A Bell
- Department of Biology Massachusetts Institute of Technology Cambridge, Cambridge, MA, 02139, USA
| | - Jia Jia Zhang
- Department of Biology Massachusetts Institute of Technology Cambridge, Cambridge, MA, 02139, USA
| | - Tania A Baker
- Department of Biology Massachusetts Institute of Technology Cambridge, Cambridge, MA, 02139, USA
| | - Joseph H Davis
- Department of Biology Massachusetts Institute of Technology Cambridge, Cambridge, MA, 02139, USA.
| | - Robert T Sauer
- Department of Biology Massachusetts Institute of Technology Cambridge, Cambridge, MA, 02139, USA.
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27
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Su J, Hu S, Ding S, Feng K. PSMC2 knockdown exerts an anti-tumor role in nasopharyngeal carcinoma through regulating AKT signaling pathway. Cell Cycle 2023; 22:2381-2391. [PMID: 38123344 PMCID: PMC10802197 DOI: 10.1080/15384101.2023.2293590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
Nasopharyngeal carcinoma is a major public health problem in several countries, particularly in Southeast Asia and North Africa. However, the mechanism underlying the malignant biological behaviors of nasopharyngeal carcinoma is not fully clear. Our study intended to investigate the functional importance and molecular mechanism of proteasome 26 S subunit ATPase 2 (PSMC2) in the progression of nasopharyngeal carcinoma. We examined the expression of PSMC2 in both nasopharyngeal carcinoma tissues and normal healthy tissues using immunohistochemistry (IHC). Additionally, we conducted a series of cell experiments to verify the functional roles of PSMC2 and to explore the underlying pathway involved. The results revealed that PSMC2 was significantly upregulated in nasopharyngeal carcinoma tissues compared to normal tissues. Moreover, high PSMC2 was shown to closely correlate with the pathological stage and tumor infiltrate in nasopharyngeal carcinoma patients. Functionally, we observed a suppression of nasopharyngeal carcinoma progression upon knocking down PSMC2. This was evidenced by inhibited cell proliferation and migration in vitro, as well as impaired cell growth in vivo, along with increased apoptosis. Mechanistically, the inhibitory effects of PSMC2 silence on nasopharyngeal carcinoma could be reversed by the addition of AKT activator. Overall, our study sheds light on a novel mechanism underlying the development and progression of nasopharyngeal carcinoma, with PSMC2 exerting a positive regulatory role through the modulation of the AKT signaling pathway. A deeper understanding of PSMC2 may contribute to the development of improved treatment strategies for nasopharyngeal carcinoma.
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Affiliation(s)
- Jin Su
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Zhengzhou University, ZhengZhou, Henan, China
| | - Shousen Hu
- Department of Throat Head and Neck Surgery, The First Affiliated Hospital of Zhengzhou University, ZhengZhou, Henan, China
| | - Shiping Ding
- Medical Service, Zhengzhou hospital of Traditional Chinese medicine, Zhengzhou, Henan, China
| | - Kun Feng
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Zhengzhou University, ZhengZhou, Henan, China
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Tang Y, Yang D, Ma J, Wang N, Qian W, Wang B, Qin Y, Lu M, Lv H. Bioinformatics analysis and identification of hub genes of neutrophils in Kawasaki disease: a pivotal study. Clin Rheumatol 2023; 42:3089-3096. [PMID: 37394620 DOI: 10.1007/s10067-023-06636-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/04/2023] [Accepted: 05/12/2023] [Indexed: 07/04/2023]
Abstract
BACKGROUND Kawasaki disease (KD) is considered the main contributor to acquired heart diseases in developed countries. However, the precise pathogenesis of KD remains unclear. Neutrophils play roles in KD. This study aimed to select hub genes in neutrophils in acute KD. METHODS mRNA microarray of neutrophils from four acute KD patients and three healthy controls was performed to screen differentially expressed mRNAs (DE-mRNAs). DE-mRNAs were analyzed and predicted by Gene Ontology (GO), Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathways, and protein-protein interaction networks. Real time-PCR was finally conducted to confirm the reliability and validity of the expression level of DE-mRNAs from blood samples of healthy controls and KD patients in both acute and convalescent stage. RESULTS A total of 1950 DE-mRNAs including 1287 upregulated and 663 downregulated mRNAs were identified. GO and KEGG analyses revealed the DE-mRNAs were mainly enriched in the regulation of transcription from RNA polymerase II promoter, apoptotic process, intracellular signal transduction, protein phosphorylation, protein transport, metabolic pathways, carbon metabolism, lysosome, apoptosis, pyrimidine metabolism, alzheimer disease, prion disease, sphingolipid metabolism, huntington disease, glucagon signaling pathway, non-alcoholic fatty liver disease, pyruvate metabolism, sphingolipid signaling pathway, and peroxisome. Twenty hub DE-mRNAs were selected including GAPDH, GNB2L1, PTPRC, GART, HIST2H2AC, ACTG1, H2AFX, CREB1, ATP5A1, ENO1, RAC2, PKM, BCL2L1, ATP5B, MRPL13, SDHA, TLR4, RUVBL2, TXNRD1, and ITGAM. The real-time PCR results showed that BCL2L1 and ITGAM mRNA were upregulated in acute KD and were normalized in the convalescent stage. CONCLUSIONS These findings may improve our understanding of neutrophils in KD. Key Points • Neutrophilic BCL2L1 and ITGAM mRNA were first reported to be correlated with the pathogenic mechanism of KD.
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Affiliation(s)
- Yunjia Tang
- Department of Cardiology, Children's Hospital of Soochow University, No 92, Zhongnan Street, Suzhou, People's Republic of China
| | - Daoping Yang
- Department of Cardiology, Children's Hospital of Soochow University, No 92, Zhongnan Street, Suzhou, People's Republic of China
| | - Jin Ma
- Department of Pharmacy, Children's Hospital of Soochow University, No 92, Zhongnan Street, Suzhou, People's Republic of China
| | - Nana Wang
- Department of Cardiology, Children's Hospital of Soochow University, No 92, Zhongnan Street, Suzhou, People's Republic of China
| | - Weiguo Qian
- Department of Cardiology, Children's Hospital of Soochow University, No 92, Zhongnan Street, Suzhou, People's Republic of China
| | - Bo Wang
- Department of Cardiology, Children's Hospital of Soochow University, No 92, Zhongnan Street, Suzhou, People's Republic of China
| | - Yiming Qin
- Department of Pediatrics, Changshu Hospital Affiliated to Nanjing University of Chinese Medicine, No 6, Huanghe Road, Changshu, People's Republic of China
| | - Meihua Lu
- Department of Pediatrics, Changshu Hospital Affiliated to Nanjing University of Chinese Medicine, No 6, Huanghe Road, Changshu, People's Republic of China.
| | - Haitao Lv
- Department of Cardiology, Children's Hospital of Soochow University, No 92, Zhongnan Street, Suzhou, People's Republic of China.
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Gerber M, Suppanz I, Oeljeklaus S, Niemann M, Käser S, Warscheid B, Schneider A, Dewar CE. A Msp1-containing complex removes orphaned proteins in the mitochondrial outer membrane of T. brucei. Life Sci Alliance 2023; 6:e202302004. [PMID: 37586887 PMCID: PMC10432679 DOI: 10.26508/lsa.202302004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 07/27/2023] [Accepted: 07/31/2023] [Indexed: 08/18/2023] Open
Abstract
The AAA-ATPase Msp1 extracts mislocalised outer membrane proteins and thus contributes to mitochondrial proteostasis. Using pulldown experiments, we show that trypanosomal Msp1 localises to both glycosomes and the mitochondrial outer membrane, where it forms a complex with four outer membrane proteins. The trypanosome-specific pATOM36 mediates complex assembly of α-helically anchored mitochondrial outer membrane proteins such as protein translocase subunits. Inhibition of their assembly triggers a pathway that results in the proteasomal digestion of unassembled substrates. Using inducible single, double, and triple RNAi cell lines combined with proteomic analyses, we demonstrate that not only Msp1 but also the trypanosomal homolog of the AAA-ATPase VCP are implicated in this quality control pathway. Moreover, in the absence of VCP three out of the four Msp1-interacting mitochondrial proteins are required for efficient proteasomal digestion of pATOM36 substrates, suggesting they act in concert with Msp1. pATOM36 is a functional analog of the yeast mitochondrial import complex complex and possibly of human mitochondrial animal-specific carrier homolog 2, suggesting that similar mitochondrial quality control pathways linked to Msp1 might also exist in yeast and humans.
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Affiliation(s)
- Markus Gerber
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland
| | - Ida Suppanz
- Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg, Germany
| | - Silke Oeljeklaus
- Faculty of Chemistry and Pharmacy, Biochemistry II, Theodor Boveri-Institute, University of Würzburg, Würzburg, Germany
| | - Moritz Niemann
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland
| | - Sandro Käser
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland
| | - Bettina Warscheid
- Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg, Germany
- Faculty of Chemistry and Pharmacy, Biochemistry II, Theodor Boveri-Institute, University of Würzburg, Würzburg, Germany
| | - André Schneider
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland
- Institute for Advanced Study (Wissenschaftskolleg) Berlin, Berlin, Germany
| | - Caroline E Dewar
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland
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30
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Hou S, Zhang J, Chi X, Li X, Zhang Q, Kang C, Shan H. Roles of DSCC1 and GINS1 in gastric cancer. Medicine (Baltimore) 2023; 102:e35681. [PMID: 37904396 PMCID: PMC10615490 DOI: 10.1097/md.0000000000035681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 09/26/2023] [Indexed: 11/01/2023] Open
Abstract
Gastric carcinoma is a common malignant tumor originating from gastric mucosal epithelium. However, role of DS-cell cycle-dependent protein 1 (DSCC1) and GINS1 in gastric carcinoma remains unclear. The gastric carcinoma datasets GSE79973 and GSE118916 were downloaded from gene expression omnibus. Multiple datasets were merged and batched. Differentially expressed genes (DEGs) were screened and weighted gene co-expression network analysis was performed. Functional enrichment analysis, gene set enrichment analysis and immune infiltration analysis were performed. Construction and analysis of protein-protein interaction Network. Survival analysis and comparative toxicogenomics database were performed. A heat map of gene expression was drawn. Target Scan screen miRNAs regulating DEGs. Two thousand forty-four DEGs were identified. According to gene ontology analysis, in biological process, they were mainly enriched in cell migration, transforming growth factor β receptor signaling pathway, angiogenesis, and steroid metabolism process. In cellular component, they were mainly enriched in extracellular vesicles, basement membrane, endoplasmic reticulum lumen, and extracellular space. In molecular function, they focused on extracellular matrix structural components, protein binding, platelet-derived growth factor binding, and catalytic activity. In Kyoto encyclopedia of genes and genomes, they were mainly enriched in protein digestion and absorption, metabolic pathways, fatty acid degradation, Glycerophospholipid metabolism, ether lipid metabolism. Gene set enrichment analysis showed that DEGs were mainly enriched in transforming growth factor β receptor signaling pathway, steroid metabolism process, basement membrane, endoplasmic reticulum lumen, structural components of extracellular matrix, platelet-derived growth factor binding, Glycerophospholipid metabolism, ether lipid metabolism. The results of immune infiltration analysis showed that expression of T cell CD4 memory resting was lower in the samples of gastric cancer. The core genes (TRIP13, CHEK1, DSCC1, GINS1) are protective factors, their expression shows a downward trend with increase of risk score. Comparative toxicogenomics database analysis showed that TRIP13, CHEK1, DSCC1, GINS1 were related to gastric tumors, gastric diseases, tumors, inflammation, and necrosis. DSCC1 and GINS1 are highly expressed in gastric cancer. Higher expression levels of DSCC1 and GINS1, worse the prognosis.
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Affiliation(s)
- Shiyang Hou
- Department of General Surgery, Beijing Rehabilitation Hospital Affiliated to Capital Medical University, Xixia Zhuang, Badachu, Shijingshan District, Beijing, China
| | - Jie Zhang
- Department of General Surgery, Beijing Rehabilitation Hospital Affiliated to Capital Medical University, Xixia Zhuang, Badachu, Shijingshan District, Beijing, China
| | - Xiaoqian Chi
- Department of General Surgery, Beijing Rehabilitation Hospital Affiliated to Capital Medical University, Xixia Zhuang, Badachu, Shijingshan District, Beijing, China
| | - Xiaowei Li
- Department of General Surgery, Beijing Rehabilitation Hospital Affiliated to Capital Medical University, Xixia Zhuang, Badachu, Shijingshan District, Beijing, China
| | - Qijun Zhang
- Department of General Surgery, Beijing Rehabilitation Hospital Affiliated to Capital Medical University, Xixia Zhuang, Badachu, Shijingshan District, Beijing, China
| | - Chunbo Kang
- Department of General Surgery, Beijing Rehabilitation Hospital Affiliated to Capital Medical University, Xixia Zhuang, Badachu, Shijingshan District, Beijing, China
| | - Haifeng Shan
- Department of General Surgery, Beijing Rehabilitation Hospital Affiliated to Capital Medical University, Xixia Zhuang, Badachu, Shijingshan District, Beijing, China
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31
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Ito M, Furukohri A, Matsuzaki K, Fujita Y, Toyoda A, Shinohara A. FIGNL1 AAA+ ATPase remodels RAD51 and DMC1 filaments in pre-meiotic DNA replication and meiotic recombination. Nat Commun 2023; 14:6857. [PMID: 37891173 PMCID: PMC10611733 DOI: 10.1038/s41467-023-42576-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
The formation of RAD51/DMC1 filaments on single-stranded (ss)DNAs essential for homology search and strand exchange in DNA double-strand break (DSB) repair is tightly regulated. FIGNL1 AAA+++ ATPase controls RAD51-mediated recombination in human cells. However, its role in gametogenesis remains unsolved. Here, we characterized a germ line-specific conditional knockout (cKO) mouse of FIGNL1. Fignl1 cKO male mice showed defective chromosome synapsis and impaired meiotic DSB repair with the accumulation of RAD51/DMC1 on meiotic chromosomes, supporting a positive role of FIGNL1 in homologous recombination at a post-assembly stage of RAD51/DMC1 filaments. Fignl1 cKO spermatocytes also accumulate RAD51/DMC1 on chromosomes in pre-meiotic S-phase. These RAD51/DMC1 assemblies are independent of meiotic DSB formation. We also showed that purified FIGNL1 dismantles RAD51 filament on double-stranded (ds)DNA as well as ssDNA. These results suggest an additional role of FIGNL1 in limiting the non-productive assembly of RAD51/DMC1 on native dsDNAs during pre-meiotic S-phase and meiotic prophase I.
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Affiliation(s)
- Masaru Ito
- Institute for Protein Research, Osaka University, Suita, Osaka, 565-0871, Japan.
| | - Asako Furukohri
- Institute for Protein Research, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Kenichiro Matsuzaki
- Institute for Protein Research, Osaka University, Suita, Osaka, 565-0871, Japan
- Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nara, Nara, 631-8505, Japan
| | - Yurika Fujita
- Institute for Protein Research, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Atsushi Toyoda
- Advanced Genomics Center, National Institute of Genetics, Mishima, Shizuoka, 411-8540, Japan
| | - Akira Shinohara
- Institute for Protein Research, Osaka University, Suita, Osaka, 565-0871, Japan.
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32
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Xue VW, Ng SSM, Tsang HF, Wong HT, Leung WW, Wong YN, Wong YKE, Yu ACS, Yim AKY, Cho WCS, Tai WCS, Wong SCC. The non-invasive diagnosis of colorectal cancer via a SOX9-based gene panel. Clin Exp Med 2023; 23:2421-2432. [PMID: 36637582 DOI: 10.1007/s10238-022-00970-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 12/01/2022] [Indexed: 01/14/2023]
Abstract
Colorectal cancer (CRC) threatens human health seriously. Early diagnosis of CRC is critical to improving patient survival. Meanwhile, non-invasive detection through tumor-circulating markers can be an important auxiliary diagnosis. In this study, we performed targeted RNA sequencing in paired tumor and adjacent normal fresh frozen tissues from 68 patients, and we also measured circulating mRNA levels in 4 time-point plasma samples collected before and after operation or chemotherapy. Our results showed that SOX9 (6.73-fold with adjusted p value < 1 × 10-45), MYC (20.59-fold with adjusted p value < 1 × 10-57), and MMP7 (131.94-fold with adjusted p value < 1 × 10-78) highly expressed in tumor compared with adjacent normal tissues. Besides, the circulating mRNA of SOX9 (41.14-fold with adjusted p value < 1 × 10-13) in CRC was significantly higher than in the normal control as well. Moreover, a SOX9-based 9-gene panel (SOX9, GSK3A, FZD4, LEF1, DVL1, FZD7, NFATC1, KRT19, and RUVBL1) showed the non-invasive diagnostic value of CRC (AUC: 0.863 (0.766-0.960), TPR: 0.92, TNR: 0.87). In summary, SOX9 expression consistently increases in tumor and plasma samples from CRC patients, which indicates the important role of SOX9 in CRC progression and its potential in non-invasive diagnosis of CRC.
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Affiliation(s)
- Vivian Weiwen Xue
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region, China
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, International Cancer Center, Department of Pharmacology, Shenzhen University Health Science Center, Shenzhen, China
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region, China
| | - Simon Siu Man Ng
- Department of Surgery, Faculty of Medicine, The Chinese University of Hong Kong, Kowloon, Hong Kong Special Administrative Region, China
| | - Hin Fung Tsang
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region, China
| | - Heong Ting Wong
- Department of Pathology, Kiang Wu Hospital, Santo António, Macau Special Administrative Region, China
| | - Wing Wa Leung
- Department of Surgery, Faculty of Medicine, The Chinese University of Hong Kong, Kowloon, Hong Kong Special Administrative Region, China
| | - Yee Ni Wong
- Department of Surgery, Faculty of Medicine, The Chinese University of Hong Kong, Kowloon, Hong Kong Special Administrative Region, China
| | - Yin Kwan Evelyn Wong
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region, China
| | - Allen Chi Shing Yu
- Codex Genetics Limited, Kowloon, Hong Kong Special Administrative Region, China
| | - Aldrin Kay Yuen Yim
- Codex Genetics Limited, Kowloon, Hong Kong Special Administrative Region, China
| | - William Chi Shing Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong Special Administrative Region, China
| | - William Chi Shing Tai
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region, China
| | - Sze Chuen Cesar Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region, China.
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33
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Rüttermann M, Koci M, Lill P, Geladas ED, Kaschani F, Klink BU, Erdmann R, Gatsogiannis C. Structure of the peroxisomal Pex1/Pex6 ATPase complex bound to a substrate. Nat Commun 2023; 14:5942. [PMID: 37741838 PMCID: PMC10518020 DOI: 10.1038/s41467-023-41640-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 09/12/2023] [Indexed: 09/25/2023] Open
Abstract
The double-ring AAA+ ATPase Pex1/Pex6 is required for peroxisomal receptor recycling and is essential for peroxisome formation. Pex1/Pex6 mutations cause severe peroxisome associated developmental disorders. Despite its pathophysiological importance, mechanistic details of the heterohexamer are not yet available. Here, we report cryoEM structures of Pex1/Pex6 from Saccharomyces cerevisiae, with an endogenous protein substrate trapped in the central pore of the catalytically active second ring (D2). Pairs of Pex1/Pex6(D2) subdomains engage the substrate via a staircase of pore-1 loops with distinct properties. The first ring (D1) is catalytically inactive but undergoes significant conformational changes resulting in alternate widening and narrowing of its pore. These events are fueled by ATP hydrolysis in the D2 ring and disengagement of a "twin-seam" Pex1/Pex6(D2) heterodimer from the staircase. Mechanical forces are propagated in a unique manner along Pex1/Pex6 interfaces that are not available in homo-oligomeric AAA-ATPases. Our structural analysis reveals the mechanisms of how Pex1 and Pex6 coordinate to achieve substrate translocation.
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Affiliation(s)
- Maximilian Rüttermann
- Institute for Medical Physics and Biophysics, University Münster, Münster, Germany
- Center for Soft Nanoscience (SoN), University Münster, Münster, Germany
| | - Michelle Koci
- Department of Structural Biochemistry, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Pascal Lill
- Institute for Medical Physics and Biophysics, University Münster, Münster, Germany
- Center for Soft Nanoscience (SoN), University Münster, Münster, Germany
- Department of Structural Biochemistry, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Ermis Dionysios Geladas
- Institute for Medical Physics and Biophysics, University Münster, Münster, Germany
- Center for Soft Nanoscience (SoN), University Münster, Münster, Germany
| | - Farnusch Kaschani
- Analytics Core Facility Essen, Center of Medical Biotechnology (ZMB), Faculty of Biology, University of Duisburg-Essen, Essen, Germany
| | - Björn Udo Klink
- Institute for Medical Physics and Biophysics, University Münster, Münster, Germany
- Center for Soft Nanoscience (SoN), University Münster, Münster, Germany
| | - Ralf Erdmann
- Institute for Biochemistry and Pathobiochemistry, Department of Systems Biochemistry, Ruhr-University Bochum, Bochum, Germany
| | - Christos Gatsogiannis
- Institute for Medical Physics and Biophysics, University Münster, Münster, Germany.
- Center for Soft Nanoscience (SoN), University Münster, Münster, Germany.
- Department of Structural Biochemistry, Max Planck Institute of Molecular Physiology, Dortmund, Germany.
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Hattori A, Takamatsu-Ichihara E, Yamamoto Y, Fujita S, Yamagata K, Katsumoto T, Machida Y, Shinohara H, Murakami R, Kitabayashi I. Genetic and chemical targeting of the ATPase complex TIP48 and 49 impairs acute myeloid leukemia. Leukemia 2023; 37:1812-1829. [PMID: 37491463 DOI: 10.1038/s41375-023-01971-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 06/01/2023] [Accepted: 07/10/2023] [Indexed: 07/27/2023]
Abstract
The chromatin-associated AAA+ ATPases Tip48 and Tip49 are the core components of various complexes implicated in diverse nuclear events such as DNA repair and gene regulation. Although they are frequently overexpressed in many human cancers, their functional significance remains unclear. Here, we show that loss of Tip49 triggered p53-dependent apoptosis and inhibited leukemia development in vivo. To examine the impact of chemical inhibition of this complex on leukemia, we have developed the novel compound DS-4950, which interferes with the ATPase activity of the Tip48/49. Administration of DS-4950 was well-tolerated in healthy mice, and the drug effectively reduced tumor burden and improved survival. We also provide evidence that the dependency on Tip48/49 is widely conserved in non-hematologic malignancies with wild type p53. These results demonstrated that the Tip48/49 ATPases are functionally necessary and therapeutically targetable for the treatment of human cancers.
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Affiliation(s)
- Ayuna Hattori
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan.
- Division of Cell Fate Dynamics and Therapeutics, Department of Biosystems Science, Institute for Life and Medical Sciences (LiMe), Kyoto University, Kyoto, Japan.
| | - Emi Takamatsu-Ichihara
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan
| | - Yoshiki Yamamoto
- Division of Cell Fate Dynamics and Therapeutics, Department of Biosystems Science, Institute for Life and Medical Sciences (LiMe), Kyoto University, Kyoto, Japan
| | - Shuhei Fujita
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan
| | - Kazutsune Yamagata
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan
| | - Takuo Katsumoto
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan
| | - Yukino Machida
- Department of Veterinary Pathology, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Haruka Shinohara
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan
| | - Ryo Murakami
- Oncology Research Laboratory II, Daiichi Sankyo Co., Ltd, Tokyo, Japan
| | - Issay Kitabayashi
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan.
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Sun T, Liu Z. MicroRNA-139-5p suppresses non-small cell lung cancer progression by targeting ATAD2. Pathol Res Pract 2023; 249:154719. [PMID: 37595446 DOI: 10.1016/j.prp.2023.154719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 06/10/2023] [Accepted: 07/26/2023] [Indexed: 08/20/2023]
Abstract
MiR-139-5p is a suppressor in multiple types of cancer. However, whether miR-139-5p affects NSCLC is unknown. In this study, miR-139-5p expression in clinical samples was examined by real-time PCR and in situ hybridization (ISH). MiR-139-5p mimic was transfected to monitor NSCLC cell behaviors. Potential target was predicated using bioinformatics database. Next, whether miR-139-5p impacted cell behaviors via regulation of its predicted target gene were further evaluated. The result revealed that miR-139-5p was lower in NSCLC samples/cells. MiR-139-5p restrained A549 cell proliferation, accelerated apoptosis, and inhibited the β-catenin signaling. ATAD2 was a predicted target of miR-139-5p, and it was highly expressed in NSCLC tissues. ATAD2 overexpression abolished the miR-139-5p's anti-tumor effect on cell proliferation and apoptosis. TWS119 (a β-catenin signaling activator) partially reversed miR-139-5p overexpression-induced suppression of cell proliferation and promotion of cell apoptosis. In tumor xenografts, miR-139-5p restrained tumor growth. MiR-139-5p was a tumor suppressor in NSCLC by regulating the oncogene ATAD2 and β-catenin signaling. Our study provides a promising target for cancer treatment.
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Affiliation(s)
- Tong Sun
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, PR China
| | - Zhaoyu Liu
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, PR China.
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Pereira Â, Tkachenko N, Fortuna AM, Alonso I, Cardoso M, Da Silva JD. An SPG7 mutation as a novel cause of monogenic progressive muscular atrophy. Neurol Sci 2023; 44:3303-3305. [PMID: 37213040 DOI: 10.1007/s10072-023-06867-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 05/17/2023] [Indexed: 05/23/2023]
Abstract
BACKGROUND Progressive muscular atrophy (PMA) is a rare adult-onset neurological disease that is characterized by isolated lower motor neuron degeneration. While it is still disputable whether PMA is a subtype of amyotrophic lateral sclerosis (ALS) or an isolated disorder, it is well-established as a clinically defined entity. About 5% of PMA cases are monogenic, and the implicated genes largely overlap with those causing monogenic ALS. CASE DESCRIPTION Here we describe a 68-year-old female patient with progressive and asymmetric upper-limb weakness throughout an 18-month period, with muscle atrophy, dysphagia and slurring of speech. The lower limbs were unaffected, and there was no sign of upper motor neuron dysfunction. Comprehensive genetic testing for single nucleotide and copy-number variants revealed a pathogenic monoallelic variant c.1529C>T, p.(Ala510Val) in the SPG7 gene. DISCUSSION Pathogenic biallelic SPG7 variants have been originally associated with hereditary spastic paraplegia, but other phenotypes are nowadays known to be linked to these variants, such as ALS. However, there is no report of this (or any) other SPG7 variant in association with PMA, whether it progressed to ALS or not. In conclusion, we present the first known case of PMA associated with a monoallelic SPG7 mutation.
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Affiliation(s)
- Ângela Pereira
- Centro Materno-Infantil do Norte, Centro Hospital Universitário de Santo António, Porto, Portugal
- Hospital de Braga, Braga, Portugal
| | - Nataliya Tkachenko
- Centro de Genética Médica Doutor Jacinto Magalhães (CGM), Centro Hospitalar Universitário de Santo António, Porto, Portugal
- Unit for Multidisciplinary Research in Biomedicine, Abel Salazar Biomedical Sciences Institute, Porto University, Porto, Portugal
| | - Ana Maria Fortuna
- Centro de Genética Médica Doutor Jacinto Magalhães (CGM), Centro Hospitalar Universitário de Santo António, Porto, Portugal
- Unit for Multidisciplinary Research in Biomedicine, Abel Salazar Biomedical Sciences Institute, Porto University, Porto, Portugal
| | | | - Márcio Cardoso
- Corino de Andrade Unit, Centro Hospitalar Universitário de Santo António, Porto, Portugal
| | - Jorge Diogo Da Silva
- Centro de Genética Médica Doutor Jacinto Magalhães (CGM), Centro Hospitalar Universitário de Santo António, Porto, Portugal.
- Unit for Multidisciplinary Research in Biomedicine, Abel Salazar Biomedical Sciences Institute, Porto University, Porto, Portugal.
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.
- ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal.
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Zhang T, Zhao SH, Wang Y, He Y. FIGL1 coordinates with dosage-sensitive BRCA2 in modulating meiotic recombination in maize. J Integr Plant Biol 2023; 65:2107-2121. [PMID: 37293848 DOI: 10.1111/jipb.13541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 06/01/2023] [Indexed: 06/10/2023]
Abstract
Meiotic crossover (CO) formation between homologous chromosomes ensures their subsequent proper segregation and generates genetic diversity among offspring. In maize, however, the mechanisms that modulate CO formation remain poorly characterized. Here, we found that both maize BREAST CANCER SUSCEPTIBILITY PROTEIN 2 (BRCA2) and AAA-ATPase FIDGETIN-LIKE-1 (FIGL1) act as positive factors of CO formation by controlling the assembly or/and stability of two conserved DNA recombinases RAD51 and DMC1 filaments. Our results revealed that ZmBRCA2 is not only involved in the repair of DNA double-stranded breaks (DSBs), but also regulates CO formation in a dosage-dependent manner. In addition, ZmFIGL1 interacts with RAD51 and DMC1, and Zmfigl1 mutants had a significantly reduced number of RAD51/DMC1 foci and COs. Further, simultaneous loss of ZmFIGL1 and ZmBRCA2 abolished RAD51/DMC1 foci and exacerbated meiotic defects compared with the single mutant Zmbrca2 or Zmfigl1. Together, our data demonstrate that ZmBRCA2 and ZmFIGL1 act coordinately to regulate the dynamics of RAD51/DMC1-dependent DSB repair to promote CO formation in maize. This conclusion is surprisingly different from the antagonistic roles of BRCA2 and FIGL1 in Arabidopsis, implying that, although key factors that control CO formation are evolutionarily conserved, specific characteristics have been adopted in diverse plant species.
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Affiliation(s)
- Ting Zhang
- MOE Key Laboratory of Crop Heterosis and Utilization, National Maize Improvement Center of China, College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Shuang-Hui Zhao
- MOE Key Laboratory of Crop Heterosis and Utilization, National Maize Improvement Center of China, College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Yan Wang
- MOE Key Laboratory of Crop Heterosis and Utilization, National Maize Improvement Center of China, College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Yan He
- MOE Key Laboratory of Crop Heterosis and Utilization, National Maize Improvement Center of China, College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
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Tian Y, Dong D, Wang Z, Wu L, Park JY, Wei GH, Wang L. Combined CRISPRi and proteomics screening reveal a cohesin-CTCF-bound allele contributing to increased expression of RUVBL1 and prostate cancer progression. Am J Hum Genet 2023; 110:1289-1303. [PMID: 37541187 PMCID: PMC10432188 DOI: 10.1016/j.ajhg.2023.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 07/06/2023] [Accepted: 07/06/2023] [Indexed: 08/06/2023] Open
Abstract
Genome-wide association studies along with expression quantitative trait locus (eQTL) mapping have identified hundreds of single-nucleotide polymorphisms (SNPs) and their target genes in prostate cancer (PCa), yet functional characterization of these risk loci remains challenging. To screen for potential regulatory SNPs, we designed a CRISPRi library containing 9,133 guide RNAs (gRNAs) to cover 2,166 candidate SNP loci implicated in PCa and identified 117 SNPs that could regulate 90 genes for PCa cell growth advantage. Among these, rs60464856 was covered by multiple gRNAs significantly depleted in screening (FDR < 0.05). Pooled SNP association analysis in the PRACTICAL and FinnGen cohorts showed significantly higher PCa risk for the rs60464856 G allele (p value = 1.2 × 10-16 and 3.2 × 10-7, respectively). Subsequent eQTL analysis revealed that the G allele is associated with increased RUVBL1 expression in multiple datasets. Further CRISPRi and xCas9 base editing confirmed that the rs60464856 G allele leads to elevated RUVBL1 expression. Furthermore, SILAC-based proteomic analysis demonstrated allelic binding of cohesin subunits at the rs60464856 region, where the HiC dataset showed consistent chromatin interactions in prostate cell lines. RUVBL1 depletion inhibited PCa cell proliferation and tumor growth in a xenograft mouse model. Gene-set enrichment analysis suggested an association of RUVBL1 expression with cell-cycle-related pathways. Increased expression of RUVBL1 and activation of cell-cycle pathways were correlated with poor PCa survival in TCGA datasets. Our CRISPRi screening prioritized about one hundred regulatory SNPs essential for prostate cell proliferation. In combination with proteomics and functional studies, we characterized the mechanistic role of rs60464856 and RUVBL1 in PCa progression.
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Affiliation(s)
- Yijun Tian
- Department of Tumor Biology, H. Lee Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL 33612, USA
| | - Dandan Dong
- MOE Key Laboratory of Metabolism and Molecular Medicine, Shanghai Medical College of Fudan University, Shanghai, China
| | - Zixian Wang
- MOE Key Laboratory of Metabolism and Molecular Medicine, Shanghai Medical College of Fudan University, Shanghai, China; Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, Shanghai Medical College of Fudan University, Shanghai, China; Fudan University Shanghai Cancer Center, Shanghai Medical College of Fudan University, Shanghai, China
| | - Lang Wu
- Population Sciences in the Pacific Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, Honolulu, HI 96813, USA
| | - Jong Y Park
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Gong-Hong Wei
- MOE Key Laboratory of Metabolism and Molecular Medicine, Shanghai Medical College of Fudan University, Shanghai, China; Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, Shanghai Medical College of Fudan University, Shanghai, China; Fudan University Shanghai Cancer Center, Shanghai Medical College of Fudan University, Shanghai, China; Disease Networks Research Unit, Biocenter Oulu, University of Oulu, Oulu, Finland; Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland.
| | - Liang Wang
- Department of Tumor Biology, H. Lee Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL 33612, USA.
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Galarreta CI, Wong K, Carmichael J, Woods J, Tise CG, Niehaus AD, Schildt AJ, Verscaj CP, Cusmano-Ozog KP. A homozygous Gly470Ala variant in PEX6 causes severe Zellweger spectrum disorder. Am J Med Genet A 2023; 191:2057-2063. [PMID: 37144748 DOI: 10.1002/ajmg.a.63234] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/21/2023] [Accepted: 04/26/2023] [Indexed: 05/06/2023]
Abstract
Zellweger spectrum disorder (ZSD) is a group of autosomal recessive disorders caused by biallelic pathogenic variants in any one of the 13 PEX genes essential for peroxisomal biogenesis. We report a cohort of nine infants who presented at birth with severe neonatal features suggestive of ZSD and found to be homozygous for a variant in PEX6 (NM_000287.4:c.1409G > C[p.Gly470Ala]). All were of Mixtec ancestry and identified by the California Newborn Screening (NBS) Program to have elevated C26:0-lysophosphatidylcholine but no reportable variants in ABCD1. The clinical and biochemical features of this cohort are described within. Gly470Ala may represent a founder variant in the Mixtec population of Central California. ZSD should be considered in patients who present at birth with severe hypotonia and enlarged fontanelles, especially in the setting of an abnormal NBS, Mixtec ancestry, or family history of infant death. There is a need to further characterize the natural history of ZSD, the Gly470Ala variant, and expand upon possible genotype-phenotype correlations.
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Affiliation(s)
- Carolina I Galarreta
- Medical Genetics and Metabolism Department, Valley Children's Hospital, Madera, California, USA
| | - Karen Wong
- Department of Pediatrics, Valley Children's Hospital, Madera, California, USA
| | - Jason Carmichael
- Medical Genetics and Metabolism Department, Valley Children's Hospital, Madera, California, USA
| | - Jeremy Woods
- Medical Genetics and Metabolism Department, Valley Children's Hospital, Madera, California, USA
| | - Christina G Tise
- Division of Medical Genetics, Department of Pediatrics, Lucile Packard Children's Hospital and Stanford University, Stanford, California, USA
| | - Annie D Niehaus
- Division of Medical Genetics, Department of Pediatrics, Lucile Packard Children's Hospital and Stanford University, Stanford, California, USA
| | - Alison J Schildt
- Division of Medical Genetics, Department of Pediatrics, Lucile Packard Children's Hospital and Stanford University, Stanford, California, USA
| | - Courtney P Verscaj
- Division of Medical Genetics, Department of Pediatrics, Lucile Packard Children's Hospital and Stanford University, Stanford, California, USA
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He J, Liu K, Wu Y, Zhao C, Yan S, Chen JH, Hu L, Wang D, Zheng F, Wei W, Xu C, Huang C, Liu X, Yao X, Ding L, Fang Z, Tang AH, Fu C. The AAA-ATPase Yta4/ATAD1 interacts with the mitochondrial divisome to inhibit mitochondrial fission. PLoS Biol 2023; 21:e3002247. [PMID: 37590302 PMCID: PMC10465003 DOI: 10.1371/journal.pbio.3002247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 08/29/2023] [Accepted: 07/12/2023] [Indexed: 08/19/2023] Open
Abstract
Mitochondria are in a constant balance of fusion and fission. Excessive fission or deficient fusion leads to mitochondrial fragmentation, causing mitochondrial dysfunction and physiological disorders. How the cell prevents excessive fission of mitochondria is not well understood. Here, we report that the fission yeast AAA-ATPase Yta4, which is the homolog of budding yeast Msp1 responsible for clearing mistargeted tail-anchored (TA) proteins on mitochondria, plays a critical role in preventing excessive mitochondrial fission. The absence of Yta4 leads to mild mitochondrial fragmentation in a Dnm1-dependent manner but severe mitochondrial fragmentation upon induction of mitochondrial depolarization. Overexpression of Yta4 delocalizes the receptor proteins of Dnm1, i.e., Fis1 (a TA protein) and Mdv1 (the bridging protein between Fis1 and Dnm1), from mitochondria and reduces the localization of Dnm1 to mitochondria. The effect of Yta4 overexpression on Fis1 and Mdv1, but not Dnm1, depends on the ATPase and translocase activities of Yta4. Moreover, Yta4 interacts with Dnm1, Mdv1, and Fis1. In addition, Yta4 competes with Dnm1 for binding Mdv1 and decreases the affinity of Dnm1 for GTP and inhibits Dnm1 assembly in vitro. These findings suggest a model, in which Yta4 inhibits mitochondrial fission by inhibiting the function of the mitochondrial divisome composed of Fis1, Mdv1, and Dnm1. Therefore, the present work reveals an uncharacterized molecular mechanism underlying the inhibition of mitochondrial fission.
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Affiliation(s)
- Jiajia He
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Ke Liu
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Yifan Wu
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Chenhui Zhao
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Shuaijie Yan
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Jia-Hui Chen
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- Institute of Artificial Intelligence, Hefei Comprehensive National Science Center, Hefei, China
| | - Lizhu Hu
- Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
| | - Dongmei Wang
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Fan Zheng
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Wenfan Wei
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Chao Xu
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Chengdong Huang
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Xing Liu
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Xuebiao Yao
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
| | - Lijun Ding
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Zhiyou Fang
- Anhui Province Key Laboratory of Medical Physics and Technology, Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
| | - Ai-Hui Tang
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- Institute of Artificial Intelligence, Hefei Comprehensive National Science Center, Hefei, China
| | - Chuanhai Fu
- MOE Key Laboratory for Cellular Dynamics & Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- Anhui Key Laboratory of Cellular Dynamics and Chemical Biology & Hefei National Research Center for Interdisciplinary Sciences at the Microscale, School of Life Sciences, University of Science and Technology of China, Hefei, China
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Song B, Xu C, Zhang Y, Shan Y. Circ_ATAD3B inhibits cell proliferation of breast cancer via mediating the miR-570-3p/MX2 axis. Prev Med 2023; 173:107568. [PMID: 37286092 DOI: 10.1016/j.ypmed.2023.107568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/28/2023] [Accepted: 05/31/2023] [Indexed: 06/09/2023]
Abstract
It has been discovered that some circular RNAs can serve as excellent therapeutic targets for breast cancer (BC). However, the biological role that circ ATAD3B plays in BC is not yet completely understood. As a result, the purpose of this work was to evaluate the function of circ_ATAD3B in the development of BC. Three different GEO datasets were used to compile the expression profiles of circRNAs related to BC (GSE101124, GSE165884, and GSE182471). CCK-8 and the production of clones, in addition to RT-PCR and western blot assays, were utilized in this study to evaluate the regulation of these three biological molecules in the process of BC carcinogenesis.circ_ATAD3B was the only potential BC-related circRNA that was significantly reduced in BC tumor tissues, and it functioned as a miR-570-3p sponge to suppress cell survival and proliferation, as stated by the aforementioned two algorithms. The expression of MX2 was boosted when circ_ATAD3B was used to sponge miR-570-3p. The inhibitory effect that circ_ATAD3B has on the malignant phenotype of BC cells was overcome by the expression of miR-570-3p through up-regulation and MX2 through down-regulation. The tumor suppressor circ_ATAD3B prevents cancer progression by regulating the miR-570-3p/MX2 pathway. Circ_ATAD3B may be a candidate for targeted therapy of breast cancer.
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Affiliation(s)
- Binbin Song
- Department of Medical Oncology, The Affiliated Hospital of Jiaxing University, No. 1882 South Zhonghuan Road, Jiaxing 310012, Zhejiang, China
| | - Ce Xu
- Department of Oncology, Jimin Hospital, Shanghai 200052, China
| | - Yi Zhang
- Department of Oncology, Jimin Hospital, Shanghai 200052, China
| | - Yuanyuan Shan
- Hangzhou Mushi Biotechnology Co., LTD., Hangzhou, China.
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郑 奎, 武 菲, 娄 美, 王 莹, 李 博, 郝 京, 王 永, 张 英, 齐 焕. [Clinical and genetic characteristics of children with primary dilated cardiomyopathy]. Zhongguo Dang Dai Er Ke Za Zhi 2023; 25:726-731. [PMID: 37529955 PMCID: PMC10414173 DOI: 10.7499/j.issn.1008-8830.2303077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 05/30/2023] [Indexed: 08/03/2023]
Abstract
OBJECTIVES To study the genetic characteristics, clinical characteristics, and prognosis of children with primary dilated cardiomyopathy (DCM). METHODS A retrospective analysis was performed on the medical data of 44 children who were diagnosed with DCM in Hebei Children's Hospital from July 2018 to February 2023. According to the genetic testing results, they were divided into two groups: gene mutation-positive group (n=17) and gene mutation-negative group (n=27). The two groups were compared in terms of clinical data at initial diagnosis and follow-up data. RESULTS Among the 44 children with DCM, there were 21 boys (48%) and 23 girls (52%). Respiratory symptoms including cough and shortness of breath were the most common symptom at initial diagnosis (34%, 15/44). The detection rate of gene mutations was 39% (17/44). There were no significant differences between the two groups in clinical characteristics, proportion of children with cardiac function grade Ⅲ or Ⅳ, brain natriuretic peptide levels, left ventricular ejection fraction, and left ventricular fractional shortening at initial diagnosis (P>0.05). The median follow-up time was 23 months, and 9 children (20%) died, including 8 children from the gene mutation-positive group, among whom 3 had TTN gene mutation, 2 had LMNA gene mutation, 2 had TAZ gene mutation, and 1 had ATAD3A gene mutation. The gene mutation-positive group had a significantly higher mortality rate than the gene mutation-negative group (P<0.05). CONCLUSIONS There is no correlation between the severity of DCM at initial diagnosis and gene mutations in children. However, children with gene mutations may have a poorer prognosis.
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Affiliation(s)
- 奎 郑
- 河北省儿童医院心内科/河北省小儿心血管重点实验室,河北石家庄050031
| | - 菲 武
- 河北省儿童医院心内科/河北省小儿心血管重点实验室,河北石家庄050031
| | - 美娜 娄
- 河北省儿童医院心内科/河北省小儿心血管重点实验室,河北石家庄050031
| | - 莹雪 王
- 河北省儿童医院心内科/河北省小儿心血管重点实验室,河北石家庄050031
| | - 博 李
- 河北省儿童医院心内科/河北省小儿心血管重点实验室,河北石家庄050031
| | - 京霞 郝
- 河北省儿童医院心内科/河北省小儿心血管重点实验室,河北石家庄050031
| | - 永丽 王
- 河北省儿童医院心内科/河北省小儿心血管重点实验室,河北石家庄050031
| | - 英谦 张
- 河北省儿童医院心内科/河北省小儿心血管重点实验室,河北石家庄050031
| | - 焕军 齐
- 河北省儿童医院心内科/河北省小儿心血管重点实验室,河北石家庄050031
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Cunha P, Petit E, Coutelier M, Coarelli G, Mariotti C, Faber J, Van Gaalen J, Damasio J, Fleszar Z, Tosi M, Rocca C, De Michele G, Minnerop M, Ewenczyk C, Santorelli FM, Heinzmann A, Bird T, Amprosi M, Indelicato E, Benussi A, Charles P, Stendel C, Romano S, Scarlato M, Le Ber I, Bassi MT, Serrano M, Schmitz-Hübsch T, Doss S, Van Velzen GAJ, Thomas Q, Trabacca A, Ortigoza-Escobar JD, D'Arrigo S, Timmann D, Pantaleoni C, Martinuzzi A, Besse-Pinot E, Marsili L, Cioffi E, Nicita F, Giorgetti A, Moroni I, Romaniello R, Casali C, Ponger P, Casari G, De Bot ST, Ristori G, Blumkin L, Borroni B, Goizet C, Marelli C, Boesch S, Anheim M, Filla A, Houlden H, Bertini E, Klopstock T, Synofzik M, Riant F, Zanni G, Magri S, Di Bella D, Nanetti L, Sequeiros J, Oliveira J, Van de Warrenburg B, Schöls L, Taroni F, Brice A, Durr A. Extreme phenotypic heterogeneity in non-expansion spinocerebellar ataxias. Am J Hum Genet 2023; 110:1098-1109. [PMID: 37301203 PMCID: PMC10357418 DOI: 10.1016/j.ajhg.2023.05.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/18/2023] [Accepted: 05/19/2023] [Indexed: 06/12/2023] Open
Abstract
Although the best-known spinocerebellar ataxias (SCAs) are triplet repeat diseases, many SCAs are not caused by repeat expansions. The rarity of individual non-expansion SCAs, however, has made it difficult to discern genotype-phenotype correlations. We therefore screened individuals who had been found to bear variants in a non-expansion SCA-associated gene through genetic testing, and after we eliminated genetic groups that had fewer than 30 subjects, there were 756 subjects bearing single-nucleotide variants or deletions in one of seven genes: CACNA1A (239 subjects), PRKCG (175), AFG3L2 (101), ITPR1 (91), STUB1 (77), SPTBN2 (39), or KCNC3 (34). We compared age at onset, disease features, and progression by gene and variant. There were no features that reliably distinguished one of these SCAs from another, and several genes-CACNA1A, ITPR1, SPTBN2, and KCNC3-were associated with both adult-onset and infantile-onset forms of disease, which also differed in presentation. Nevertheless, progression was overall very slow, and STUB1-associated disease was the fastest. Several variants in CACNA1A showed particularly wide ranges in age at onset: one variant produced anything from infantile developmental delay to ataxia onset at 64 years of age within the same family. For CACNA1A, ITPR1, and SPTBN2, the type of variant and charge change on the protein greatly affected the phenotype, defying pathogenicity prediction algorithms. Even with next-generation sequencing, accurate diagnosis requires dialogue between the clinician and the geneticist.
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Affiliation(s)
- Paulina Cunha
- Sorbonne Université, Paris Brain Institute (ICM), Pitié-Salpêtrière Hospital, AP-HP, INSERM, CNRS, University Hospital Pitié-Salpêtrière, CS21414, 75646 PARIS Cedex 13, France
| | - Emilien Petit
- Sorbonne Université, Paris Brain Institute (ICM), Pitié-Salpêtrière Hospital, AP-HP, INSERM, CNRS, University Hospital Pitié-Salpêtrière, CS21414, 75646 PARIS Cedex 13, France
| | - Marie Coutelier
- Sorbonne Université, Paris Brain Institute (ICM), Pitié-Salpêtrière Hospital, AP-HP, INSERM, CNRS, University Hospital Pitié-Salpêtrière, CS21414, 75646 PARIS Cedex 13, France
| | - Giulia Coarelli
- Sorbonne Université, Paris Brain Institute (ICM), Pitié-Salpêtrière Hospital, AP-HP, INSERM, CNRS, University Hospital Pitié-Salpêtrière, CS21414, 75646 PARIS Cedex 13, France
| | - Caterina Mariotti
- Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Jennifer Faber
- German Center for Neurodegenerative Disease (DZNE), 53127 Bonn, Germany; Department of Neurology, University Hospital of Bonn, 53111 Bonn, Germany
| | - Judith Van Gaalen
- Department of Neurology, Donders Institute for Brain, Cognition, and Behaviour, Radboud University Medical Center, 6525 Nijmegen, the Netherlands
| | - Joana Damasio
- Neurology Department, Hospital de Santo António, Centro Hospitalar Universitário de Santo António, 4099-001 Porto, Portugal; CGPP, IBMC-Institute for Molecular and Cell Biology & UnIGENe, i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
| | - Zofia Fleszar
- German Center for Neurodegenerative Disease (DZNE), 72076 Tübingen, Germany; Department of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research & Center of Neurology, University of Tübingen, 72076 Tübingen, Germany
| | - Michele Tosi
- Unit of Neuromuscular and Neurodegenerative Disorders, Bambino Gesu' Children's Research Hospital, IRCCS, 00165 Rome, Italy
| | - Clarissa Rocca
- Department of Neuromuscular Diseases, UCL Queen's Square Institute of Neurology, Queen's Square House, Queen's Square, WC1N 3BG London, UK
| | - Giovanna De Michele
- Department of Neuroscience and Reproductive and Odontostomatological Sciences, University of Naples Federico II, 80131 Naples, Italy
| | - Martina Minnerop
- Institute of Neuroscience and Medicine (INM-1), Research Centre Jülich, 52428 Jülich, Germany; Institute of Clinical Neuroscience and Medical Psychology and Department of Neurology, Center for Movement Disorders and Neuromodulation, Medical Faculty & University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, 40225 Düsseldorf, Germany
| | - Claire Ewenczyk
- Sorbonne Université, Paris Brain Institute (ICM), Pitié-Salpêtrière Hospital, AP-HP, INSERM, CNRS, University Hospital Pitié-Salpêtrière, CS21414, 75646 PARIS Cedex 13, France
| | - Filippo M Santorelli
- Molecular Medicine & Neurogenetics, IRCCS Fondazione Stella Maris, 56128 Calambrone, Italy
| | - Anna Heinzmann
- Sorbonne Université, Paris Brain Institute (ICM), Pitié-Salpêtrière Hospital, AP-HP, INSERM, CNRS, University Hospital Pitié-Salpêtrière, CS21414, 75646 PARIS Cedex 13, France
| | - Thomas Bird
- University of Washington, Seattle, WA 98195, USA
| | - Matthias Amprosi
- Center for Rare Movement Disorders, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Elisabetta Indelicato
- Center for Rare Movement Disorders, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Alberto Benussi
- Centre for Neurodegenerative Disorders, Department of Clinical and Experimental Sciences, University of Brescia, 25121 Brescia, Italy
| | - Perrine Charles
- Sorbonne Université, Paris Brain Institute (ICM), Pitié-Salpêtrière Hospital, AP-HP, INSERM, CNRS, University Hospital Pitié-Salpêtrière, CS21414, 75646 PARIS Cedex 13, France
| | - Claudia Stendel
- German Center for Neurodegenerative Disease (DZNE), München, Germany; Department of Neurology, Friedrich-Baur Institute, University Hospital of Ludwig-Maximilians-University, Munich Cluster for Systems Neurology (SyNergy), 80336 Munich, Germany
| | - Silvia Romano
- Neurosciences, Mental Health, and Sensory Organs (NESMOS) Department, S. Andrea Hospital, Sapienza University of Rome, 00189 Rome, Italy
| | - Marina Scarlato
- San Raffaele Hospital and Vita-Salute San Raffaele University, Milan, Italy
| | - Isabelle Le Ber
- Sorbonne Université, Paris Brain Institute (ICM), Pitié-Salpêtrière Hospital, AP-HP, INSERM, CNRS, University Hospital Pitié-Salpêtrière, CS21414, 75646 PARIS Cedex 13, France
| | - Maria Teresa Bassi
- Scientific Institute I.R.C.C.S. Eugenio Medea, 23842 Bosisio Parini, Italy
| | - Mercedes Serrano
- Pediatric Neurology Department, Sant Joan de Déu Hospital, 08950 Barcelona, Spain
| | - Tanja Schmitz-Hübsch
- Department of Neurology and Experimental Neurology, Charité - Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Sarah Doss
- Department of Neurology and Experimental Neurology, Charité - Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Gijs A J Van Velzen
- Department of Neurology, Leiden University Medical Center, 2333 Leiden, the Netherlands
| | - Quentin Thomas
- Department of Clinical Genetics, Dijon University Hospital, 21000 Dijon, France
| | - Antonio Trabacca
- Scientific Institute I.R.C.C.S. Eugenio Medea, 23842 Bosisio Parini, Italy
| | | | - Stefano D'Arrigo
- Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Dagmar Timmann
- Department of Neurology and Center for Translational Neuro- and Behavioral Sciences (C-TNBS), Essen University Hospital, University of Duisburg-Essen, 45147 Essen, Germany
| | - Chiara Pantaleoni
- Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Andrea Martinuzzi
- Scientific Institute I.R.C.C.S. Eugenio Medea, 23842 Bosisio Parini, Italy
| | - Elsa Besse-Pinot
- Department of Neurology, Clermont-Ferrand University Hospital, 63000 Clermont-Ferrand, France
| | - Luca Marsili
- Gardner Family Center for Parkinson's Disease and Movement Disorders, Department of Neurology, University of Cincinnati, Cincinnati, OH 45219, USA
| | - Ettore Cioffi
- Sapienza University of Rome, Department of Medico-Surgical Sciences and Biotechnologies, Polo Pontino, 04100 Latina, Italy
| | - Francesco Nicita
- Unit of Neuromuscular and Neurodegenerative Disorders, Bambino Gesu' Children's Research Hospital, IRCCS, 00165 Rome, Italy
| | - Alejandro Giorgetti
- Computational Biomedicine, Institute for Advanced Simulations IAS-5 and Institute of Neuroscience and Medicine INM-9, Forschungszentrum Jülich GmbH, 52428 Jülich, Germany; Department of Biotechnology, Università degli Studi di Verona, 37134 Verona, Italy
| | - Isabella Moroni
- Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Romina Romaniello
- Scientific Institute I.R.C.C.S. Eugenio Medea, 23842 Bosisio Parini, Italy
| | - Carlo Casali
- Sapienza University of Rome, Department of Medico-Surgical Sciences and Biotechnologies, Polo Pontino, 04100 Latina, Italy
| | - Penina Ponger
- Neurology Department, Tel-Aviv Sourasky Medical Center, 6329302 Tel-Aviv, Israel; Sackler School of Medicine, Tel-Aviv University, 6997801 Tel-Aviv, Israel
| | - Giorgio Casari
- San Raffaele Hospital and Vita-Salute San Raffaele University, Milan, Italy
| | - Susanne T De Bot
- Department of Neurology, Leiden University Medical Center, 2333 Leiden, the Netherlands
| | - Giovanni Ristori
- Neurosciences, Mental Health, and Sensory Organs (NESMOS) Department, S. Andrea Hospital, Sapienza University of Rome, 00189 Rome, Italy
| | - Lubov Blumkin
- Sackler School of Medicine, Tel-Aviv University, 6997801 Tel-Aviv, Israel; Pediatric Movement Disorders Clinic, Pediatric Neurology Unit, Wolfson Medical Center, 5822012 Holon, Israel
| | - Barbara Borroni
- Centre for Neurodegenerative Disorders, Department of Clinical and Experimental Sciences, University of Brescia, 25121 Brescia, Italy
| | - Cyril Goizet
- University Bordeaux, Equipe « Neurogénétique Translationnelle - NRGEN », INCIA CNRS UMR5287 Université Bordeaux and Centre de Reference Maladies Rares « Neurogénétique », Service de Génétique Médicale, Bordeaux University Hospital (CHU Bordeaux), 33000 Bordeaux, France
| | - Cecilia Marelli
- MMDN, University Montpellier, EPHE, INSERM and Expert Center for Neurogenetic Diseases, CHU, 34095 Montpellier, France
| | - Sylvia Boesch
- Center for Rare Movement Disorders, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Mathieu Anheim
- Department of Neurology, Strasbourg University Hospital, 67098 Strasbourg, France; Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM-U964; CNRS-UMR7104; University of Strasbourg, 67400 Illkirch-Graffenstaden, France
| | - Alessandro Filla
- Department of Neuroscience and Reproductive and Odontostomatological Sciences, University of Naples Federico II, 80131 Naples, Italy
| | - Henry Houlden
- Department of Neuromuscular Diseases, UCL Queen's Square Institute of Neurology, Queen's Square House, Queen's Square, WC1N 3BG London, UK
| | - Enrico Bertini
- Unit of Neuromuscular and Neurodegenerative Disorders, Bambino Gesu' Children's Research Hospital, IRCCS, 00165 Rome, Italy
| | - Thomas Klopstock
- German Center for Neurodegenerative Disease (DZNE), München, Germany; Department of Neurology, Friedrich-Baur Institute, University Hospital of Ludwig-Maximilians-University, Munich Cluster for Systems Neurology (SyNergy), 80336 Munich, Germany
| | - Matthis Synofzik
- German Center for Neurodegenerative Disease (DZNE), 72076 Tübingen, Germany; Department of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research & Center of Neurology, University of Tübingen, 72076 Tübingen, Germany
| | - Florence Riant
- Department of Neurovascular Molecular Genetics, Assistance Publique-Hôpitaux de Paris, Hôpital Saint-Louis, 75010 Paris, France
| | - Ginevra Zanni
- Unit of Neuromuscular and Neurodegenerative Disorders, Bambino Gesu' Children's Research Hospital, IRCCS, 00165 Rome, Italy
| | - Stefania Magri
- Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Daniela Di Bella
- Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Lorenzo Nanetti
- Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Jorge Sequeiros
- CGPP, IBMC-Institute for Molecular and Cell Biology & UnIGENe, i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
| | - Jorge Oliveira
- CGPP, IBMC-Institute for Molecular and Cell Biology & UnIGENe, i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
| | - Bart Van de Warrenburg
- Department of Neurology, Donders Institute for Brain, Cognition, and Behaviour, Radboud University Medical Center, 6525 Nijmegen, the Netherlands
| | - Ludger Schöls
- German Center for Neurodegenerative Disease (DZNE), 72076 Tübingen, Germany; Department of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research & Center of Neurology, University of Tübingen, 72076 Tübingen, Germany
| | - Franco Taroni
- Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Alexis Brice
- Sorbonne Université, Paris Brain Institute (ICM), Pitié-Salpêtrière Hospital, AP-HP, INSERM, CNRS, University Hospital Pitié-Salpêtrière, CS21414, 75646 PARIS Cedex 13, France
| | - Alexandra Durr
- Sorbonne Université, Paris Brain Institute (ICM), Pitié-Salpêtrière Hospital, AP-HP, INSERM, CNRS, University Hospital Pitié-Salpêtrière, CS21414, 75646 PARIS Cedex 13, France.
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44
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Li M, Yang L, Chan AKN, Pokharel SP, Liu Q, Mattson N, Xu X, Chang W, Miyashita K, Singh P, Zhang L, Li M, Wu J, Wang J, Chen B, Chan LN, Lee J, Zhang XH, Rosen ST, Müschen M, Qi J, Chen J, Hiom K, Bishop AJR, Chen C. Epigenetic Control of Translation Checkpoint and Tumor Progression via RUVBL1-EEF1A1 Axis. Adv Sci (Weinh) 2023; 10:e2206584. [PMID: 37075745 PMCID: PMC10265057 DOI: 10.1002/advs.202206584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 02/23/2023] [Indexed: 05/03/2023]
Abstract
Epigenetic dysregulation is reported in multiple cancers including Ewing sarcoma (EwS). However, the epigenetic networks underlying the maintenance of oncogenic signaling and therapeutic response remain unclear. Using a series of epigenetics- and complex-focused CRISPR screens, RUVBL1, the ATPase component of NuA4 histone acetyltransferase complex, is identified to be essential for EwS tumor progression. Suppression of RUVBL1 leads to attenuated tumor growth, loss of histone H4 acetylation, and ablated MYC signaling. Mechanistically, RUVBL1 controls MYC chromatin binding and modulates the MYC-driven EEF1A1 expression and thus protein synthesis. High-density CRISPR gene body scan pinpoints the critical MYC interacting residue in RUVBL1. Finally, this study reveals the synergism between RUVBL1 suppression and pharmacological inhibition of MYC in EwS xenografts and patient-derived samples. These results indicate that the dynamic interplay between chromatin remodelers, oncogenic transcription factors, and protein translation machinery can provide novel opportunities for combination cancer therapy.
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Affiliation(s)
- Mingli Li
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Lu Yang
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
- Division of Epigenetic and Transcriptional EngineeringBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Anthony K. N. Chan
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
- Division of Epigenetic and Transcriptional EngineeringBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Sheela Pangeni Pokharel
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
- Division of Epigenetic and Transcriptional EngineeringBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Qiao Liu
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Nicole Mattson
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Xiaobao Xu
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Wen‐Han Chang
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Kazuya Miyashita
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Priyanka Singh
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Leisi Zhang
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Maggie Li
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Jun Wu
- City of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Jinhui Wang
- City of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Bryan Chen
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Lai N. Chan
- Center of Molecular and Cellular OncologyYale Cancer CenterYale School of MedicineNew HavenCT06510USA
- Department of Cancer BiologyLerner Research InstituteCleveland ClinicClevelandOH44195USA
| | - Jaewoong Lee
- Center of Molecular and Cellular OncologyYale Cancer CenterYale School of MedicineNew HavenCT06510USA
- School of Biosystems and Biomedical SciencesCollege of Health ScienceKorea UniversitySeoul02841South Korea
- Interdisciplinary Program in Precision Public HealthKorea UniversitySeoul02841South Korea
| | | | | | - Markus Müschen
- Center of Molecular and Cellular OncologyYale Cancer CenterYale School of MedicineNew HavenCT06510USA
| | - Jun Qi
- Department of Cancer BiologyDana‐Farber Cancer InstituteHarvard Medical SchoolBostonMA02215USA
| | - Jianjun Chen
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
- City of Hope Comprehensive Cancer CenterDuarteCA91010USA
| | - Kevin Hiom
- Division of Cellular MedicineSchool of MedicineUniversity of DundeeNethergateDundeeDD1 4HNUK
| | - Alexander J. R. Bishop
- Department of Cellular Systems and AnatomyUniversity of Texas Health Science Center at San AntonioSan AntonioTX78229USA
- Greehey Children's Cancer Research InstituteUniversity of Texas Health Science Center at San AntonioSan AntonioTX78229USA
| | - Chun‐Wei Chen
- Department of Systems BiologyBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
- Division of Epigenetic and Transcriptional EngineeringBeckman Research InstituteCity of Hope Comprehensive Cancer CenterDuarteCA91010USA
- City of Hope Comprehensive Cancer CenterDuarteCA91010USA
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45
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Dvořák Tomaštíková E, Yang F, Mlynárová K, Hafidh S, Schořová Š, Kusová A, Pernisová M, Přerovská T, Klodová B, Honys D, Fajkus J, Pecinka A, Schrumpfová PP. RUVBL proteins are involved in plant gametophyte development. Plant J 2023; 114:325-337. [PMID: 36752686 DOI: 10.1111/tpj.16136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 01/25/2023] [Accepted: 02/01/2023] [Indexed: 05/10/2023]
Abstract
The proper development of male and female gametophytes is critical for successful sexual reproduction and requires a carefully regulated series of events orchestrated by a suite of various proteins. RUVBL1 and RUVBL2, plant orthologues of human Pontin and Reptin, respectively, belong to the evolutionarily highly conserved AAA+ family linked to a wide range of cellular processes. Previously, we found that RUVBL1 and RUVBL2A mutations are homozygous lethal in Arabidopsis. Here, we report that RUVBL1 and RUVBL2A play roles in reproductive development. We show that mutant plants produce embryo sacs with an abnormal structure or with various numbers of nuclei. Although pollen grains of heterozygous mutant plants exhibit reduced viability and reduced pollen tube growth in vitro, some of the ruvbl pollen tubes are capable of targeting ovules in vivo. Similarly, some ruvbl ovules retain the ability to attract wild-type pollen tubes but fail to develop further. The activity of the RUVBL1 and RUVBL2A promoters was observed in the embryo sac, pollen grains, and tapetum cells and, for RUVBL2A, also in developing ovules. In summary, we show that the RUVBL proteins are essential for the proper development of both male and particularly female gametophytes in Arabidopsis.
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Affiliation(s)
- Eva Dvořák Tomaštíková
- Centre of Plant Structural and Functional Genomics, Institute of Experimental Botany, Czech Academy of Sciences, Šlechtitelů 31, 77900, Olomouc, Czech Republic
| | - Fen Yang
- Centre of Plant Structural and Functional Genomics, Institute of Experimental Botany, Czech Academy of Sciences, Šlechtitelů 31, 77900, Olomouc, Czech Republic
- Department of Cell Biology and Genetics, Faculty of Science, Palacký University, Šlechtitelů 27, 77900, Olomouc, Czech Republic
| | - Kristína Mlynárová
- Laboratory of Functional Genomics and Proteomics, Faculty of Science, National Centre for Biomolecular Research, Masaryk University, Kamenice 5, CZ-62500, Brno, Czech Republic
| | - Said Hafidh
- Laboratory of Pollen Biology, Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, CZ-165 02, Prague, Czech Republic
| | - Šárka Schořová
- Laboratory of Functional Genomics and Proteomics, Faculty of Science, National Centre for Biomolecular Research, Masaryk University, Kamenice 5, CZ-62500, Brno, Czech Republic
| | - Alžbeta Kusová
- Laboratory of Functional Genomics and Proteomics, Faculty of Science, National Centre for Biomolecular Research, Masaryk University, Kamenice 5, CZ-62500, Brno, Czech Republic
- Mendel Centre for Plant Genomics and Proteomics, Central European Institute of Technology, Masaryk University, Kamenice 5, CZ-62500, Brno, Czech Republic
| | - Markéta Pernisová
- Laboratory of Functional Genomics and Proteomics, Faculty of Science, National Centre for Biomolecular Research, Masaryk University, Kamenice 5, CZ-62500, Brno, Czech Republic
- Mendel Centre for Plant Genomics and Proteomics, Central European Institute of Technology, Masaryk University, Kamenice 5, CZ-62500, Brno, Czech Republic
| | - Tereza Přerovská
- Laboratory of Functional Genomics and Proteomics, Faculty of Science, National Centre for Biomolecular Research, Masaryk University, Kamenice 5, CZ-62500, Brno, Czech Republic
| | - Božena Klodová
- Laboratory of Pollen Biology, Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, CZ-165 02, Prague, Czech Republic
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, 128 00, Praha 2, Czech Republic
| | - David Honys
- Laboratory of Pollen Biology, Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, CZ-165 02, Prague, Czech Republic
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, 128 00, Praha 2, Czech Republic
| | - Jiří Fajkus
- Laboratory of Functional Genomics and Proteomics, Faculty of Science, National Centre for Biomolecular Research, Masaryk University, Kamenice 5, CZ-62500, Brno, Czech Republic
- Mendel Centre for Plant Genomics and Proteomics, Central European Institute of Technology, Masaryk University, Kamenice 5, CZ-62500, Brno, Czech Republic
- Institute of Biophysics of the Czech Academy of Sciences, Královopolská 135, CZ-61265, Brno, Czech Republic
| | - Ales Pecinka
- Centre of Plant Structural and Functional Genomics, Institute of Experimental Botany, Czech Academy of Sciences, Šlechtitelů 31, 77900, Olomouc, Czech Republic
- Department of Cell Biology and Genetics, Faculty of Science, Palacký University, Šlechtitelů 27, 77900, Olomouc, Czech Republic
| | - Petra Procházková Schrumpfová
- Laboratory of Functional Genomics and Proteomics, Faculty of Science, National Centre for Biomolecular Research, Masaryk University, Kamenice 5, CZ-62500, Brno, Czech Republic
- Mendel Centre for Plant Genomics and Proteomics, Central European Institute of Technology, Masaryk University, Kamenice 5, CZ-62500, Brno, Czech Republic
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46
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Russo AE, Giacopazzi S, Deshong A, Menon M, Ortiz V, Ego KM, Corbett KD, Bhalla N. The conserved AAA ATPase PCH-2 distributes its regulation of meiotic prophase events through multiple meiotic HORMADs in C. elegans. PLoS Genet 2023; 19:e1010708. [PMID: 37058535 PMCID: PMC10132761 DOI: 10.1371/journal.pgen.1010708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 04/26/2023] [Accepted: 03/21/2023] [Indexed: 04/15/2023] Open
Abstract
During meiotic prophase, the essential events of homolog pairing, synapsis, and recombination are coordinated with meiotic progression to promote fidelity and prevent aneuploidy. The conserved AAA+ ATPase PCH-2 coordinates these events to guarantee crossover assurance and accurate chromosome segregation. How PCH-2 accomplishes this coordination is poorly understood. Here, we provide evidence that PCH-2 decelerates pairing, synapsis and recombination in C. elegans by remodeling meiotic HORMADs. We propose that PCH-2 converts the closed versions of these proteins, which drive these meiotic prophase events, to unbuckled conformations, destabilizing interhomolog interactions and delaying meiotic progression. Further, we find that PCH-2 distributes this regulation among three essential meiotic HORMADs in C. elegans: PCH-2 acts through HTP-3 to regulate pairing and synapsis, HIM-3 to promote crossover assurance, and HTP-1 to control meiotic progression. In addition to identifying a molecular mechanism for how PCH-2 regulates interhomolog interactions, our results provide a possible explanation for the expansion of the meiotic HORMAD family as a conserved evolutionary feature of meiosis. Taken together, our work demonstrates that PCH-2's remodeling of meiotic HORMADs has functional consequences for the rate and fidelity of homolog pairing, synapsis, recombination and meiotic progression, ensuring accurate meiotic chromosome segregation.
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Affiliation(s)
- Anna E. Russo
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, California, United States of America
| | - Stefani Giacopazzi
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, California, United States of America
| | - Alison Deshong
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, California, United States of America
| | - Malaika Menon
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, California, United States of America
| | - Valery Ortiz
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, California, United States of America
| | - Kaori M. Ego
- Department of Cellular and Molecular Medicine, University of California, San Diego, California, United States of America
| | - Kevin D. Corbett
- Department of Cellular and Molecular Medicine, University of California, San Diego, California, United States of America
| | - Needhi Bhalla
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, California, United States of America
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47
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Zhang N, Huang D, Ruan X, Ng ATL, Tsu JHL, Jiang G, Huang J, Zhan Y, Na R. CRISPR screening reveals gleason score and castration resistance related oncodriver ring finger protein 19 A (RNF19A) in prostate cancer. Drug Resist Updat 2023; 67:100912. [PMID: 36623445 DOI: 10.1016/j.drup.2022.100912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 12/11/2022] [Accepted: 12/20/2022] [Indexed: 01/05/2023]
Abstract
Prostate cancer (PCa) is one of the most lethal causes of cancer-related death in male. It is characterized by chromosomal instability and disturbed signaling transduction. E3 ubiquitin ligases are well-recognized as mediators leading to genomic alterations and malignant phenotypes. There is a lack of systematic study on novel oncodrivers with genomic and clinical significance in PCa. In this study we used clustered regularly interspaced short palindromic repeats (CRISPR) system to screen 656 E3 ubiquitin ligases as oncodrivers or tumor repressors in PCa cells. We identified 51 significantly changed genes, and conducted genomic and clinical analysis on these genes. It was found that the Ring Finger Protein 19 A (RNF19A) was a novel oncodriver in PCa. RNF19A was frequently amplified and highly expressed in PCa and other cancer types. Clinically, higher RNF19A expression correlated with advanced Gleason Score and predicted castration resistance. Mechanistically, transcriptomics, quantitative and ubiquitination proteomic analysis showed that RNF19A ubiquitylated Thyroid Hormone Receptor Interactor 13 (TRIP13) and was transcriptionally activated by androgen receptor (AR) and Hypoxia Inducible Factor 1 Subunit Alpha (HIF1A). This study uncovers the genomic and clinical significance of a oncodriver RNF19A in PCa. The results of this study indicate that targeting AR/HIF1A-RNF19A-TRIP13 signaling axis could be an alternative option for PCa diagnosis and therapy.
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Affiliation(s)
- Ning Zhang
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Da Huang
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaohao Ruan
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ada Tsui-Lin Ng
- Division of Urology, Department of Surgery, Queen Mary Hospital, Hong Kong, China; Division of Urology, Department of Surgery, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - James Hok-Leung Tsu
- Division of Urology, Department of Surgery, Queen Mary Hospital, Hong Kong, China; Division of Urology, Department of Surgery, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Guangliang Jiang
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jingyi Huang
- Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yongle Zhan
- Division of Urology, Department of Surgery, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Rong Na
- Division of Urology, Department of Surgery, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China.
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Rocatcher A, Desquiret-Dumas V, Charif M, Ferré M, Gohier P, Mirebeau-Prunier D, Verny C, Milea D, Lenaers G, Bonneau D, Reynier P, Amati-Bonneau P. The top 10 most frequently involved genes in hereditary optic neuropathies in 2186 probands. Brain 2023; 146:455-460. [PMID: 36317462 DOI: 10.1093/brain/awac395] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 09/15/2022] [Accepted: 09/25/2022] [Indexed: 12/12/2022] Open
Abstract
Hereditary optic neuropathies are caused by the degeneration of retinal ganglion cells whose axons form the optic nerves, with a consistent genetic heterogeneity. As part of our diagnostic activity, we retrospectively evaluated the combination of Leber hereditary optic neuropathy mutations testing with the exon sequencing of 87 nuclear genes on 2186 patients referred for suspected hereditary optic neuropathies. The positive diagnosis rate in individuals referred for Leber hereditary optic neuropathy testing was 18% (199/1126 index cases), with 92% (184/199) carrying one of the three main pathogenic variants of mitochondrial DNA (m.11778G>A, 66.5%; m.3460G>A, 15% and m.14484T>C, 11%). The positive diagnosis rate in individuals referred for autosomal dominant or recessive optic neuropathies was 27% (451/1680 index cases), with 10 genes accounting together for 96% of this cohort. This represents an overall positive diagnostic rate of 30%. The identified top 10 nuclear genes included OPA1, WFS1, ACO2, SPG7, MFN2, AFG3L2, RTN4IP1, TMEM126A, NR2F1 and FDXR. Eleven additional genes, each accounting for less than 1% of cases, were identified in 17 individuals. Our results show that 10 major genes account for more than 96% of the cases diagnosed with our nuclear gene panel.
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Affiliation(s)
- Aude Rocatcher
- Département d'Ophtalmologie, Centre Hospitalier Universitaire d'Angers, 49933 Angers, France
| | - Valérie Desquiret-Dumas
- Université d'Angers, Centre National de la Recherche Scientifique (CNRS 6015), Institut National de la Santé et de la Recherche Médicale (INSERM U1083), Unité Mixte de Recherche (UMR) MITOVASC, 49000 Angers, France
| | - Majida Charif
- Université d'Angers, Centre National de la Recherche Scientifique (CNRS 6015), Institut National de la Santé et de la Recherche Médicale (INSERM U1083), Unité Mixte de Recherche (UMR) MITOVASC, 49000 Angers, France
- Genetics and Immuno-Cell Therapy Team, Mohammed First University, Oujda 60000, Morocco
| | - Marc Ferré
- Université d'Angers, Centre National de la Recherche Scientifique (CNRS 6015), Institut National de la Santé et de la Recherche Médicale (INSERM U1083), Unité Mixte de Recherche (UMR) MITOVASC, 49000 Angers, France
| | - Philippe Gohier
- Département d'Ophtalmologie, Centre Hospitalier Universitaire d'Angers, 49933 Angers, France
| | - Delphine Mirebeau-Prunier
- Université d'Angers, Centre National de la Recherche Scientifique (CNRS 6015), Institut National de la Santé et de la Recherche Médicale (INSERM U1083), Unité Mixte de Recherche (UMR) MITOVASC, 49000 Angers, France
| | - Christophe Verny
- Université d'Angers, Centre National de la Recherche Scientifique (CNRS 6015), Institut National de la Santé et de la Recherche Médicale (INSERM U1083), Unité Mixte de Recherche (UMR) MITOVASC, 49000 Angers, France
- Département de Neurologie, Centre Hospitalier Universitaire d'Angers, 49933 Angers, France
| | - Dan Milea
- Département d'Ophtalmologie, Centre Hospitalier Universitaire d'Angers, 49933 Angers, France
- Singapore National Eye Centre, Singapore Eye Research Institute, Duke-NUS 169857, Singapore
| | - Guy Lenaers
- Université d'Angers, Centre National de la Recherche Scientifique (CNRS 6015), Institut National de la Santé et de la Recherche Médicale (INSERM U1083), Unité Mixte de Recherche (UMR) MITOVASC, 49000 Angers, France
- Département de Neurologie, Centre Hospitalier Universitaire d'Angers, 49933 Angers, France
| | - Dominique Bonneau
- Université d'Angers, Centre National de la Recherche Scientifique (CNRS 6015), Institut National de la Santé et de la Recherche Médicale (INSERM U1083), Unité Mixte de Recherche (UMR) MITOVASC, 49000 Angers, France
- Département de Génétique, Centre Hospitalier Universitaire d'Angers, 49933 Angers, France
| | - Pascal Reynier
- Université d'Angers, Centre National de la Recherche Scientifique (CNRS 6015), Institut National de la Santé et de la Recherche Médicale (INSERM U1083), Unité Mixte de Recherche (UMR) MITOVASC, 49000 Angers, France
- Département de Biochimie et Biologie Moléculaire, Centre Hospitalier Universitaire d'Angers, 49933 Angers, France
| | - Patrizia Amati-Bonneau
- Université d'Angers, Centre National de la Recherche Scientifique (CNRS 6015), Institut National de la Santé et de la Recherche Médicale (INSERM U1083), Unité Mixte de Recherche (UMR) MITOVASC, 49000 Angers, France
- Département de Biochimie et Biologie Moléculaire, Centre Hospitalier Universitaire d'Angers, 49933 Angers, France
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Mauriac SA, Peineau T, Zuberi A, Lutz C, Géléoc GSG. Loss of Pex1 in Inner Ear Hair Cells Contributes to Cochlear Synaptopathy and Hearing Loss. Cells 2022; 11:cells11243982. [PMID: 36552747 PMCID: PMC9777190 DOI: 10.3390/cells11243982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 12/04/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022] Open
Abstract
Peroxisome Biogenesis Disorders (PBD) and Zellweger syndrome spectrum disorders (ZSD) are rare genetic multisystem disorders that include hearing impairment and are associated with defects in peroxisome assembly, function, or both. Mutations in 13 peroxin (PEX) genes have been found to cause PBD-ZSD with ~70% of patients harboring mutations in PEX1. Limited research has focused on the impact of peroxisomal disorders on auditory function. As sensory hair cells are particularly vulnerable to metabolic changes, we hypothesize that mutations in PEX1 lead to oxidative stress affecting hair cells of the inner ear, subsequently resulting in hair cell degeneration and hearing loss. Global deletion of the Pex1 gene is neonatal lethal in mice, impairing any postnatal studies. To overcome this limitation, we created conditional knockout mice (cKO) using Gfi1Creor VGlut3Cre expressing mice crossed to floxed Pex1 mice to allow for selective deletion of Pex1 in the hair cells of the inner ear. We find that Pex1 excision in inner hair cells (IHCs) leads to progressive hearing loss associated with significant decrease in auditory brainstem responses (ABR), specifically ABR wave I amplitude, indicative of synaptic defects. Analysis of IHC synapses in cKO mice reveals a decrease in ribbon synapse volume and functional alterations in exocytosis. Concomitantly, we observe a decrease in peroxisomal number, indicative of oxidative stress imbalance. Taken together, these results suggest a critical function of Pex1 in development and maturation of IHC-spiral ganglion synapses and auditory function.
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Affiliation(s)
- Stephanie A. Mauriac
- Department of Otolaryngology, Boston Children’s Hospital, Boston, MA 02115, USA
- Kirby Neurobiology Center, Harvard Medical School, Boston, MA 02115, USA
| | - Thibault Peineau
- Department of Otolaryngology, Boston Children’s Hospital, Boston, MA 02115, USA
- Kirby Neurobiology Center, Harvard Medical School, Boston, MA 02115, USA
| | - Aamir Zuberi
- Rare Disease Translational Center, The Jackson Laboratory, Bar Harbor, ME 04609, USA
- Technology Evaluation and Development Research Laboratory, The Jackson Laboratory, Bar Harbor, ME 04609, USA
| | - Cathleen Lutz
- Rare Disease Translational Center, The Jackson Laboratory, Bar Harbor, ME 04609, USA
| | - Gwénaëlle S. G. Géléoc
- Department of Otolaryngology, Boston Children’s Hospital, Boston, MA 02115, USA
- Kirby Neurobiology Center, Harvard Medical School, Boston, MA 02115, USA
- Correspondence: ; Tel.: +1-617-919-4061
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50
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Zhong JW, Ye HW, Xu K, Xie Y, Zhang XH, Li Y. [A case of mild Zellweger spectrum disorder first diagnosed as Usher syndrome]. Zhonghua Yan Ke Za Zhi 2022; 58:788-792. [PMID: 36220650 DOI: 10.3760/cma.j.cn112142-20211206-00580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
A 5-year-old female patient, presented with"night blindness and poor hearing for 1 year"whose first diagnosis was Usher syndrome due to retinitis pigmentosa accompanied by sensorineural deafness. Compound heterozygous variants (c.5G>A, p.W2*/c.3022C>T, p.P1008S) of PEX1, the causative gene for Zellweger spectrum disorder was confirmed by targeted exome sequencing analysis. Permanent tooth enamel dysplasia, nail leukoplakia, and biochemical abnormalities of peroxisome which is consistent with mild Zellweger spectrum disorder were found when she followed up.
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Affiliation(s)
- J W Zhong
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - H W Ye
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - K Xu
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - Y Xie
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - X H Zhang
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - Y Li
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
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