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Citations to this article

Mitophagy-dependent macrophage reprogramming protects against kidney fibrosis
Divya Bhatia, … , Oleh M. Akchurin, Mary E. Choi
Divya Bhatia, … , Oleh M. Akchurin, Mary E. Choi
Published October 22, 2019
Citation Information: JCI Insight. 2019;4(23):e132826. https://doi.org/10.1172/jci.insight.132826.
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Research Article Nephrology Article has an altmetric score of 9

Mitophagy-dependent macrophage reprogramming protects against kidney fibrosis

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Abstract

Mitophagy, by maintaining mitochondrial quality control, plays a key role in maintaining kidney function and is impaired in pathologic states. Macrophages are well known for their pathogenic role in kidney fibrosis. Here, we report that PINK1/Parkin-mediated mitophagy in macrophages is compromised in experimental and human kidney fibrosis. We demonstrate downregulation of mitophagy regulators mitofusin-2 (MFN2) and Parkin downstream of PINK1 in kidney fibrosis. Loss of either Pink1 or Prkn promoted renal extracellular matrix accumulation and frequency of profibrotic/M2 macrophages. Pink1–/– or Prkn–/– BM-derived macrophages (BMDMs) showed enhanced expression of rictor. Mitochondria from TGF-β1–treated Pink1–/– BMDMs exhibited increased superoxide levels, along with reduced respiration and ATP production. In addition, mitophagy in macrophages involves PINK1-mediated phosphorylation of downstream MFN2, MFN2-facilitated recruitment of Parkin to damaged mitochondria, and macrophage-specific deletion of Mfn2 aggravates kidney fibrosis. Moreover, mitophagy regulators were downregulated in human CKD kidney and TGF-β1–treated human renal macrophages, whereas Mdivi1 treatment suppressed mitophagy mediators and promoted fibrotic response. Taken together, our study is the first to our knowledge to demonstrate that macrophage mitophagy plays a protective role against kidney fibrosis via regulating the PINK1/MFN2/Parkin-mediated pathway.

Authors

Divya Bhatia, Kuei-Pin Chung, Kiichi Nakahira, Edwin Patino, Michelle C. Rice, Lisa K. Torres, Thangamani Muthukumar, Augustine M.K. Choi, Oleh M. Akchurin, Mary E. Choi

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Total citations by year

Year: 2025 2024 2023 2022 2021 2020 2019 Total
Citations: 11 19 27 19 19 8 1 104
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