PMID- 34063207 OWN - NLM STAT- MEDLINE DCOM- 20210622 LR - 20210622 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 22 IP - 9 DP - 2021 May 2 TI - Mitochondrial Dysfunction in Podocytes Caused by CRIF1 Deficiency Leads to Progressive Albuminuria and Glomerular Sclerosis in Mice. LID - 10.3390/ijms22094827 [doi] LID - 4827 AB - Recent studies have implicated mitochondrial disruption in podocyte dysfunction, which is a characteristic feature of primary and diabetic glomerular diseases. However, the mechanisms by which primary mitochondrial dysfunction in podocytes affects glomerular renal diseases are currently unknown. To investigate the role of mitochondrial oxidative phosphorylation (OxPhos) in podocyte dysfunction, glomerular function was examined in mice carrying a loss of function mutation of the gene encoding CR6-interacting factor-1 (CRIF1), which is essential for intramitochondrial production and the subsequent insertion of OxPhos polypeptides into the inner mitochondrial membrane. Homozygotic deficiency of CRIF1 in podocytes resulted in profound and progressive albuminuria from 3 weeks of age; the CRIF1-deficient mice also developed glomerular and tubulointerstitial lesions by 10 weeks of age. Furthermore, marked glomerular sclerosis and interstitial fibrosis were observed in homozygous CRIF1-deficient mice at 20 weeks of age. In cultured mouse podocytes, loss of CRIF1 resulted in OxPhos dysfunction and marked loss or abnormal aggregation of F-actin. These findings indicate that the OxPhos status determines the integrity of podocytes and their ability to maintain a tight barrier and control albuminuria. Analyses of the glomerular function of the podocyte-specific primary OxPhos dysfunction model mice demonstrate a link between podocyte mitochondrial dysfunction, progressive glomerular sclerosis, and tubulointerstitial diseases. FAU - Na, Ki Ryang AU - Na KR AD - Department of Nephrology, Chungnam National University School of Medicine, Daejeon 35015, Korea. FAU - Jeong, Jin Young AU - Jeong JY AD - Department of Nephrology, Chungnam National University School of Medicine, Daejeon 35015, Korea. AD - Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea. FAU - Shin, Jin Ah AU - Shin JA AD - Department of Nephrology, Chungnam National University School of Medicine, Daejeon 35015, Korea. AD - Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea. FAU - Chang, Yoon-Kyung AU - Chang YK AD - Department of Nephrology, Daejeon St. Mary's Hospital, Catholic University of Korea, Daejeon 34572, Korea. FAU - Suh, Kwang-Sun AU - Suh KS AUID- ORCID: 0000-0003-3874-864X AD - Department of Pathology, Chungnam National University School of Medicine, Daejeon 35015, Korea. FAU - Lee, Kang Wook AU - Lee KW AD - Department of Nephrology, Chungnam National University School of Medicine, Daejeon 35015, Korea. FAU - Choi, Dae Eun AU - Choi DE AUID- ORCID: 0000-0003-2870-3958 AD - Department of Nephrology, Chungnam National University School of Medicine, Daejeon 35015, Korea. AD - Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea. LA - eng GR - 2017R1D1AB03035061/National Research Foundation of Korea/ GR - to K.W.L./Chungnam National University Hospital Research Fund/ PT - Journal Article DEP - 20210502 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Cell Cycle Proteins) RN - 0 (Crif1 protein, mouse) RN - 0 (Peptides) SB - IM MH - Albuminuria/genetics/*metabolism/pathology MH - Animals MH - Cell Cycle Proteins/*deficiency/genetics/*metabolism MH - Diabetic Nephropathies/metabolism MH - Disease Models, Animal MH - Female MH - Fibrosis MH - Kidney/pathology MH - Male MH - Mice MH - Mice, Knockout MH - Mitochondria/genetics/*metabolism MH - Mitochondrial Membranes/metabolism MH - Oxidative Phosphorylation MH - Peptides/metabolism MH - Podocytes/*metabolism MH - Sclerosis/genetics/*metabolism/pathology PMC - PMC8124436 OTO - NOTNLM OT - CRIF1 OT - albuminuria OT - glomerular sclerosis OT - mitochondrial oxidative phosphorylation OT - podocyte COIS- The authors declare no conflict of interest. EDAT- 2021/06/03 06:00 MHDA- 2021/06/23 06:00 PMCR- 2021/05/02 CRDT- 2021/06/02 01:06 PHST- 2021/04/13 00:00 [received] PHST- 2021/04/26 00:00 [revised] PHST- 2021/04/26 00:00 [accepted] PHST- 2021/06/02 01:06 [entrez] PHST- 2021/06/03 06:00 [pubmed] PHST- 2021/06/23 06:00 [medline] PHST- 2021/05/02 00:00 [pmc-release] AID - ijms22094827 [pii] AID - ijms-22-04827 [pii] AID - 10.3390/ijms22094827 [doi] PST - epublish SO - Int J Mol Sci. 2021 May 2;22(9):4827. doi: 10.3390/ijms22094827.