Targeted Analysis of Mitochondrial Protein Conformations and Interactions by Endogenous ROS‐Triggered Cross‐Linker Release

Abstract The study of in situ conformations and interactions of mitochondrial proteins plays a crucial role in understanding their biological functions. Current chemical cross‐linking mass spectrometry (CX‐MS) has difficulty in achieving in‐depth analysis of mitochondrial proteins for cells without...

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Main Authors: Wen Zhou, Yuwan Chen, Wenxin Fu, Xinwei Li, Yufei Xia, Qun Zhao, Baofeng Zhao, Yukui Zhang, Kaiguang Yang, Lihua Zhang
Format: Article
Language:English
Published: Wiley 2024-12-01
Series:Advanced Science
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Online Access:https://doi.org/10.1002/advs.202408462
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author Wen Zhou
Yuwan Chen
Wenxin Fu
Xinwei Li
Yufei Xia
Qun Zhao
Baofeng Zhao
Yukui Zhang
Kaiguang Yang
Lihua Zhang
author_facet Wen Zhou
Yuwan Chen
Wenxin Fu
Xinwei Li
Yufei Xia
Qun Zhao
Baofeng Zhao
Yukui Zhang
Kaiguang Yang
Lihua Zhang
author_sort Wen Zhou
collection DOAJ
description Abstract The study of in situ conformations and interactions of mitochondrial proteins plays a crucial role in understanding their biological functions. Current chemical cross‐linking mass spectrometry (CX‐MS) has difficulty in achieving in‐depth analysis of mitochondrial proteins for cells without genetic modification. Herein, this work develops the reactive oxygen species (ROS)‐responsive cross‐linker delivery nanoparticles (R‐CDNP) targeting mitochondria. R‐CDNP contains mitochondria‐targeting module triphenylphosphine, ROS‐responsive module thioketal, loading module poly(lactic‐co‐glycolic acid) (PLGA), and polyethylene glycol (PEG), and cross‐linker module disuccinimidyl suberate (DSS). After targeting mitochondria, ROS‐triggered cross‐linker release improves the cross‐linking coverage of mitochondria in situ. In total, this work identifies 2103 cross‐linked sites of 572 mitochondrial proteins in HepG2 cells. 1718 intra‐links reveal dynamic conformations involving chaperones with ATP‐dependent conformation cycles, and 385 inter‐links reveal dynamic interactions involving OXPHOS complexes and 27 pairs of possible potential interactions. These results signify that R‐CDNP can achieve dynamic conformation and interaction analysis of mitochondrial proteins in living cells, thereby contributing to a better understanding of their biological functions.
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institution Kabale University
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spelling doaj-art-a263694dba404206a4aa908a0382a3b32024-12-27T13:00:46ZengWileyAdvanced Science2198-38442024-12-011148n/an/a10.1002/advs.202408462Targeted Analysis of Mitochondrial Protein Conformations and Interactions by Endogenous ROS‐Triggered Cross‐Linker ReleaseWen Zhou0Yuwan Chen1Wenxin Fu2Xinwei Li3Yufei Xia4Qun Zhao5Baofeng Zhao6Yukui Zhang7Kaiguang Yang8Lihua Zhang9State Key Laboratory of Medical Proteomics National Chromatographic R. & A. Center CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 ChinaState Key Laboratory of Medical Proteomics National Chromatographic R. & A. Center CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 ChinaState Key Laboratory of Medical Proteomics National Chromatographic R. & A. Center CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 ChinaState Key Laboratory of Medical Proteomics National Chromatographic R. & A. Center CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 ChinaUniversity of Chinese Academy of Sciences Beijing 100049 ChinaState Key Laboratory of Medical Proteomics National Chromatographic R. & A. Center CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 ChinaState Key Laboratory of Medical Proteomics National Chromatographic R. & A. Center CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 ChinaState Key Laboratory of Medical Proteomics National Chromatographic R. & A. Center CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 ChinaState Key Laboratory of Medical Proteomics National Chromatographic R. & A. Center CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 ChinaState Key Laboratory of Medical Proteomics National Chromatographic R. & A. Center CAS Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 ChinaAbstract The study of in situ conformations and interactions of mitochondrial proteins plays a crucial role in understanding their biological functions. Current chemical cross‐linking mass spectrometry (CX‐MS) has difficulty in achieving in‐depth analysis of mitochondrial proteins for cells without genetic modification. Herein, this work develops the reactive oxygen species (ROS)‐responsive cross‐linker delivery nanoparticles (R‐CDNP) targeting mitochondria. R‐CDNP contains mitochondria‐targeting module triphenylphosphine, ROS‐responsive module thioketal, loading module poly(lactic‐co‐glycolic acid) (PLGA), and polyethylene glycol (PEG), and cross‐linker module disuccinimidyl suberate (DSS). After targeting mitochondria, ROS‐triggered cross‐linker release improves the cross‐linking coverage of mitochondria in situ. In total, this work identifies 2103 cross‐linked sites of 572 mitochondrial proteins in HepG2 cells. 1718 intra‐links reveal dynamic conformations involving chaperones with ATP‐dependent conformation cycles, and 385 inter‐links reveal dynamic interactions involving OXPHOS complexes and 27 pairs of possible potential interactions. These results signify that R‐CDNP can achieve dynamic conformation and interaction analysis of mitochondrial proteins in living cells, thereby contributing to a better understanding of their biological functions.https://doi.org/10.1002/advs.202408462cross‐linking mass spectrometrymitochondriananoparticlesprotein complexesreactive oxygen species‐responsive
spellingShingle Wen Zhou
Yuwan Chen
Wenxin Fu
Xinwei Li
Yufei Xia
Qun Zhao
Baofeng Zhao
Yukui Zhang
Kaiguang Yang
Lihua Zhang
Targeted Analysis of Mitochondrial Protein Conformations and Interactions by Endogenous ROS‐Triggered Cross‐Linker Release
Advanced Science
cross‐linking mass spectrometry
mitochondria
nanoparticles
protein complexes
reactive oxygen species‐responsive
title Targeted Analysis of Mitochondrial Protein Conformations and Interactions by Endogenous ROS‐Triggered Cross‐Linker Release
title_full Targeted Analysis of Mitochondrial Protein Conformations and Interactions by Endogenous ROS‐Triggered Cross‐Linker Release
title_fullStr Targeted Analysis of Mitochondrial Protein Conformations and Interactions by Endogenous ROS‐Triggered Cross‐Linker Release
title_full_unstemmed Targeted Analysis of Mitochondrial Protein Conformations and Interactions by Endogenous ROS‐Triggered Cross‐Linker Release
title_short Targeted Analysis of Mitochondrial Protein Conformations and Interactions by Endogenous ROS‐Triggered Cross‐Linker Release
title_sort targeted analysis of mitochondrial protein conformations and interactions by endogenous ros triggered cross linker release
topic cross‐linking mass spectrometry
mitochondria
nanoparticles
protein complexes
reactive oxygen species‐responsive
url https://doi.org/10.1002/advs.202408462
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