Sanghun Kim, Seul Gi Park, Jieun Kim, Seongho Hong, Sang-Mi Cho, Soo-Yeon Lim, Eun-Kyoung Kim, Sungjin Ju, Su Bin Lee, Sol Pin Kim, Tae Young Jeong, Yeji Oh, Seunghun Han, Hae-Rim Kim, Taek Chang Lee, Hyoung-Chin Kim, Won Kee Yoon, Tae Hyeon An, Kyoung-Jin Oh, Ki-Hoan Nam, Seonghyun Lee, Kyoungmi Kim, Je Kyung Seong, Hyunji Lee
{"title":"Comprehensive phenotypic assessment of nonsense mutations in mitochondrial ND5 in mice.","authors":"Sanghun Kim, Seul Gi Park, Jieun Kim, Seongho Hong, Sang-Mi Cho, Soo-Yeon Lim, Eun-Kyoung Kim, Sungjin Ju, Su Bin Lee, Sol Pin Kim, Tae Young Jeong, Yeji Oh, Seunghun Han, Hae-Rim Kim, Taek Chang Lee, Hyoung-Chin Kim, Won Kee Yoon, Tae Hyeon An, Kyoung-Jin Oh, Ki-Hoan Nam, Seonghyun Lee, Kyoungmi Kim, Je Kyung Seong, Hyunji Lee","doi":"10.1038/s12276-024-01333-9","DOIUrl":null,"url":null,"abstract":"<p><p>Mitochondrial dysfunction induced by mitochondrial DNA (mtDNA) mutations has been implicated in various human diseases. A comprehensive analysis of mitochondrial genetic disorders requires suitable animal models for human disease studies. While gene knockout via premature stop codons is a powerful method for investigating the unique functions of target genes, achieving knockout of mtDNA has been rare. Here, we report the genotypes and phenotypes of heteroplasmic MT-ND5 gene-knockout mice. These mutant mice presented damaged mitochondrial cristae in the cerebral cortex, hippocampal atrophy, and asymmetry, leading to learning and memory abnormalities. Moreover, mutant mice are susceptible to obesity and thermogenetic disorders. We propose that these mtDNA gene-knockdown mice could serve as valuable animal models for studying the MT-ND5 gene and developing therapies for human mitochondrial disorders in the future.</p>","PeriodicalId":50466,"journal":{"name":"Experimental and Molecular Medicine","volume":null,"pages":null},"PeriodicalIF":9.5000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Experimental and Molecular Medicine","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1038/s12276-024-01333-9","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Mitochondrial dysfunction induced by mitochondrial DNA (mtDNA) mutations has been implicated in various human diseases. A comprehensive analysis of mitochondrial genetic disorders requires suitable animal models for human disease studies. While gene knockout via premature stop codons is a powerful method for investigating the unique functions of target genes, achieving knockout of mtDNA has been rare. Here, we report the genotypes and phenotypes of heteroplasmic MT-ND5 gene-knockout mice. These mutant mice presented damaged mitochondrial cristae in the cerebral cortex, hippocampal atrophy, and asymmetry, leading to learning and memory abnormalities. Moreover, mutant mice are susceptible to obesity and thermogenetic disorders. We propose that these mtDNA gene-knockdown mice could serve as valuable animal models for studying the MT-ND5 gene and developing therapies for human mitochondrial disorders in the future.
期刊介绍:
Experimental & Molecular Medicine (EMM) stands as Korea's pioneering biochemistry journal, established in 1964 and rejuvenated in 1996 as an Open Access, fully peer-reviewed international journal. Dedicated to advancing translational research and showcasing recent breakthroughs in the biomedical realm, EMM invites submissions encompassing genetic, molecular, and cellular studies of human physiology and diseases. Emphasizing the correlation between experimental and translational research and enhanced clinical benefits, the journal actively encourages contributions employing specific molecular tools. Welcoming studies that bridge basic discoveries with clinical relevance, alongside articles demonstrating clear in vivo significance and novelty, Experimental & Molecular Medicine proudly serves as an open-access, online-only repository of cutting-edge medical research.