Deficient AMPK-SENP1-Sirt3 signaling impairs mitochondrial complex I function in Parkinson’s disease model
Abstract Background Epidemiological studies have revealed increased Parkinson’s disease (PD) risk among individuals exposed to pesticides like 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). MPTP is frequently used to induce PD-like symptoms in research models by disrupting mitochondrial comple...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2025-07-01
|
| Series: | Translational Neurodegeneration |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40035-025-00489-2 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849238424406458368 |
|---|---|
| author | Xiaoyu Sun Jianyi Shen Yimei Shu Tianshi Wang Lu He Ruinan Shen Yifan Zhou Jinke Cheng Suzhen Lin Jianqing Ding |
| author_facet | Xiaoyu Sun Jianyi Shen Yimei Shu Tianshi Wang Lu He Ruinan Shen Yifan Zhou Jinke Cheng Suzhen Lin Jianqing Ding |
| author_sort | Xiaoyu Sun |
| collection | DOAJ |
| description | Abstract Background Epidemiological studies have revealed increased Parkinson’s disease (PD) risk among individuals exposed to pesticides like 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). MPTP is frequently used to induce PD-like symptoms in research models by disrupting mitochondrial complex I (CI) function and causing dopaminergic neuronal loss in the nigrostriatal region. However, the pathway(s) through which MPTP impairs mitochondrial CI function remain to be elucidated. In this study, we aim to identify the molecular mechanisms through which MPTP modulates CI function and define the specific subunits of mitochondrial CI affected by MPTP. Methods Male mice encompassing either wild-type Sirt3 or Sirt3 K223R de-SUMOylation mutation, were intraperitoneally injected with either MPTP or saline. In vitro experiments were conducted using the SH-SY5Y cell line with or without the Sirt3 de-SUMOylation mutation. Movement performance, mitochondrial function, and protein acetylation were evaluated. Results MPTP exposure, both in vitro and in vivo, disrupted the AMPK–SENP1–Sirt3 axis, leading to impairment of mitochondrial function. Specifically, MPTP suppressed activation of AMPK, impeding the entry of SENP1 into the mitochondria. The lack of mitochondrial SENP1 resulted in increased levels of SUMOylated Sirt3, which inhibited its deacetylase activity. This led to a significant increase in the acetylation of CI subunits NDUFS3 and NDUFA5, which resulted in reduced CI activity and inhibition of mitochondrial function, and eventually dopaminergic neuronal death. In this pathway, sustained deSUMOylation mutation of Sirt3 (K223R in mice, K288R in humans) mitigated the impact of MPTP on mitochondrial dysregulation, as well as dopaminergic neuronal death and behavioral deficits. Conclusion The disordered AMPK-SENP1-Sirt3 pathway plays a crucial role in the MPTP-induced CI dysfunction and PD-like phenotype, which provide valuable insights into the mechanisms of PD pathogenesis. |
| format | Article |
| id | doaj-art-ebe55977cd344f49b7ad2bc1ba8bddac |
| institution | Kabale University |
| issn | 2047-9158 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | BMC |
| record_format | Article |
| series | Translational Neurodegeneration |
| spelling | doaj-art-ebe55977cd344f49b7ad2bc1ba8bddac2025-08-20T04:01:36ZengBMCTranslational Neurodegeneration2047-91582025-07-0114111710.1186/s40035-025-00489-2Deficient AMPK-SENP1-Sirt3 signaling impairs mitochondrial complex I function in Parkinson’s disease modelXiaoyu Sun0Jianyi Shen1Yimei Shu2Tianshi Wang3Lu He4Ruinan Shen5Yifan Zhou6Jinke Cheng7Suzhen Lin8Jianqing Ding9Department of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of MedicineInstitute of Aging and Tissue Regeneration, Renji Hospital, Shanghai Jiao Tong University School of MedicineDepartment of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of MedicineDepartment of Nephrology, Renji Hospital, Shanghai Jiao Tong University School of MedicineDepartment of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of MedicineDepartment of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of MedicineDepartment of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of MedicineDepartment of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of MedicineDepartment of Neurology and Institute of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of MedicineInstitute of Aging and Tissue Regeneration, Renji Hospital, Shanghai Jiao Tong University School of MedicineAbstract Background Epidemiological studies have revealed increased Parkinson’s disease (PD) risk among individuals exposed to pesticides like 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). MPTP is frequently used to induce PD-like symptoms in research models by disrupting mitochondrial complex I (CI) function and causing dopaminergic neuronal loss in the nigrostriatal region. However, the pathway(s) through which MPTP impairs mitochondrial CI function remain to be elucidated. In this study, we aim to identify the molecular mechanisms through which MPTP modulates CI function and define the specific subunits of mitochondrial CI affected by MPTP. Methods Male mice encompassing either wild-type Sirt3 or Sirt3 K223R de-SUMOylation mutation, were intraperitoneally injected with either MPTP or saline. In vitro experiments were conducted using the SH-SY5Y cell line with or without the Sirt3 de-SUMOylation mutation. Movement performance, mitochondrial function, and protein acetylation were evaluated. Results MPTP exposure, both in vitro and in vivo, disrupted the AMPK–SENP1–Sirt3 axis, leading to impairment of mitochondrial function. Specifically, MPTP suppressed activation of AMPK, impeding the entry of SENP1 into the mitochondria. The lack of mitochondrial SENP1 resulted in increased levels of SUMOylated Sirt3, which inhibited its deacetylase activity. This led to a significant increase in the acetylation of CI subunits NDUFS3 and NDUFA5, which resulted in reduced CI activity and inhibition of mitochondrial function, and eventually dopaminergic neuronal death. In this pathway, sustained deSUMOylation mutation of Sirt3 (K223R in mice, K288R in humans) mitigated the impact of MPTP on mitochondrial dysregulation, as well as dopaminergic neuronal death and behavioral deficits. Conclusion The disordered AMPK-SENP1-Sirt3 pathway plays a crucial role in the MPTP-induced CI dysfunction and PD-like phenotype, which provide valuable insights into the mechanisms of PD pathogenesis.https://doi.org/10.1186/s40035-025-00489-2Parkinson's diseaseSENP1Sirt3Mitochondrial complex IMPTP |
| spellingShingle | Xiaoyu Sun Jianyi Shen Yimei Shu Tianshi Wang Lu He Ruinan Shen Yifan Zhou Jinke Cheng Suzhen Lin Jianqing Ding Deficient AMPK-SENP1-Sirt3 signaling impairs mitochondrial complex I function in Parkinson’s disease model Translational Neurodegeneration Parkinson's disease SENP1 Sirt3 Mitochondrial complex I MPTP |
| title | Deficient AMPK-SENP1-Sirt3 signaling impairs mitochondrial complex I function in Parkinson’s disease model |
| title_full | Deficient AMPK-SENP1-Sirt3 signaling impairs mitochondrial complex I function in Parkinson’s disease model |
| title_fullStr | Deficient AMPK-SENP1-Sirt3 signaling impairs mitochondrial complex I function in Parkinson’s disease model |
| title_full_unstemmed | Deficient AMPK-SENP1-Sirt3 signaling impairs mitochondrial complex I function in Parkinson’s disease model |
| title_short | Deficient AMPK-SENP1-Sirt3 signaling impairs mitochondrial complex I function in Parkinson’s disease model |
| title_sort | deficient ampk senp1 sirt3 signaling impairs mitochondrial complex i function in parkinson s disease model |
| topic | Parkinson's disease SENP1 Sirt3 Mitochondrial complex I MPTP |
| url | https://doi.org/10.1186/s40035-025-00489-2 |
| work_keys_str_mv | AT xiaoyusun deficientampksenp1sirt3signalingimpairsmitochondrialcomplexifunctioninparkinsonsdiseasemodel AT jianyishen deficientampksenp1sirt3signalingimpairsmitochondrialcomplexifunctioninparkinsonsdiseasemodel AT yimeishu deficientampksenp1sirt3signalingimpairsmitochondrialcomplexifunctioninparkinsonsdiseasemodel AT tianshiwang deficientampksenp1sirt3signalingimpairsmitochondrialcomplexifunctioninparkinsonsdiseasemodel AT luhe deficientampksenp1sirt3signalingimpairsmitochondrialcomplexifunctioninparkinsonsdiseasemodel AT ruinanshen deficientampksenp1sirt3signalingimpairsmitochondrialcomplexifunctioninparkinsonsdiseasemodel AT yifanzhou deficientampksenp1sirt3signalingimpairsmitochondrialcomplexifunctioninparkinsonsdiseasemodel AT jinkecheng deficientampksenp1sirt3signalingimpairsmitochondrialcomplexifunctioninparkinsonsdiseasemodel AT suzhenlin deficientampksenp1sirt3signalingimpairsmitochondrialcomplexifunctioninparkinsonsdiseasemodel AT jianqingding deficientampksenp1sirt3signalingimpairsmitochondrialcomplexifunctioninparkinsonsdiseasemodel |