1
|
Tang J, Chen Y, Li J, Yan S, Wang Z, Deng X, Feng K, Zhang Y, Chen C, Geng H, Wang Y, Wang L. 14, 15-EET alleviates neurological impairment through maintaining mitochondrial dynamics equilibrium via AMPK/SIRT1/FoxO1 signal pathways in mice with cerebral ischemia reperfusion. CNS Neurosci Ther 2023. [PMID: 37017405 PMCID: PMC10401172 DOI: 10.1111/cns.14198] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/06/2023] [Accepted: 03/14/2023] [Indexed: 04/06/2023] Open
Abstract
AIM To explore whether 14, 15-EET regulates mitochondrial dynamics to exert neuroprotective effects after cerebral ischemia-reperfusion and its underlying mechanisms. METHODS The mouse middle cerebral artery occlusion reperfusion model was used to observe brain infarct volume and neuronal apoptosis by TTC staining and Tunel assay, modified neurological severity score to detect neurological impairment, HE staining and Nissl staining to observe neuron damage, western blot and immunofluorescence methods to detect the expression of mitochondrial dynamics-related proteins, transmission electron microscopy, and Golgi-Cox staining to detect mitochondrial morphology and neuronal dendritic spines. RESULTS 14, 15-EET reduced the neuronal apoptosis and cerebral infarction volume induced by middle cerebral artery occlusion reperfusion (MCAO/R), inhibited the degradation of dendritic spines, maintained the structural integrity of neurons, and alleviated neurological impairment. Cerebral ischemia-reperfusion induces mitochondrial dynamics disorders, upregulates the expression of the mitochondrial division protein Fis 1, and inhibits the expression of mitochondrial fusion proteins MFN1, MFN2, and OPA1, while 14, 15-EET treatment reverses this process. Mechanistic studies have shown that 14, 15-EET promotes the phosphorylation of AMPK, upregulates the expression of SIRT1 and phosphorylation of FoxO1, thereby inhibiting mitochondrial division and promoting mitochondrial fusion, preserving mitochondrial dynamics, maintaining neuronal morphological and structural integrity, and alleviating neurological impairment induced by middle cerebral artery occlusion reperfusion. Compound C treatment diminishes the neuroprotective effect of 14, 15-EET following MCAO/R in mice. CONCLUSION This study elucidates the novel neuroprotective mechanism of 14, 15-EET, providing a novel approach for the development of drugs based on mitochondrial dynamics.
Collapse
Affiliation(s)
- Jing Tang
- The School of Life Sciences, Henan University, 475000, Henan Province, Kaifeng, P. R. China
| | - Yiang Chen
- The School of Life Sciences, Henan University, 475000, Henan Province, Kaifeng, P. R. China
| | - Jinyuan Li
- The School of Life Sciences, Henan University, 475000, Henan Province, Kaifeng, P. R. China
| | - Shuo Yan
- The School of Life Sciences, Henan University, 475000, Henan Province, Kaifeng, P. R. China
| | - Zenan Wang
- The School of Life Sciences, Henan University, 475000, Henan Province, Kaifeng, P. R. China
| | - Xinyu Deng
- The School of Life Sciences, Henan University, 475000, Henan Province, Kaifeng, P. R. China
| | - Ke Feng
- The School of Life Sciences, Henan University, 475000, Henan Province, Kaifeng, P. R. China
| | - Yanshuo Zhang
- The School of Life Sciences, Henan University, 475000, Henan Province, Kaifeng, P. R. China
| | - Chunrong Chen
- The School of Life Sciences, Henan University, 475000, Henan Province, Kaifeng, P. R. China
| | - Huixia Geng
- The School of Life Sciences, Henan University, 475000, Henan Province, Kaifeng, P. R. China
| | - Yanming Wang
- The School of Life Sciences, Henan University, 475000, Henan Province, Kaifeng, P. R. China
| | - Lai Wang
- The School of Life Sciences, Henan University, 475000, Henan Province, Kaifeng, P. R. China
| |
Collapse
|
2
|
Luo J, Yao JF, Deng XF, Zheng XD, Jia M, Wang YQ, Huang Y, Zhu JH. 14, 15-EET induces breast cancer cell EMT and cisplatin resistance by up-regulating integrin αvβ3 and activating FAK/PI3K/AKT signaling. J Exp Clin Cancer Res 2018; 37:23. [PMID: 29426357 PMCID: PMC5807756 DOI: 10.1186/s13046-018-0694-6] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 01/31/2018] [Indexed: 02/06/2023]
Abstract
Background 14,15-epoxyeicosatrienoic acid (14,15-EET) is an important lipid signaling molecule involved in the regulation of tumor metastasis, however, the role and molecular mechanisms of 14,15-EET activity in breast cancer cell epithelial-mesenchymal transition (EMT) and drug resistance remain enigmatic. Methods The 14, 15-EET level in serum and in tumor or non-cancerous tissue from breast cancer patients was measured by ELISA. qRT-PCR and western blot analyses were used to examine expression of integrin αvβ3. The role of 14, 15-EET in breast cancer cell adhesion, invasion was explored by adhesion and Transwell assays. The role of 14, 15-EET in breast cancer cell cisplatin resistance in vitro was determined by MTT assay. Western blot was conducted to detect the protein expressions of EMT-related markers and FAK/PI3K/AKT signaling. Xenograft models in nude mice were established to explore the roles of 14, 15-EET in breast cancer cells EMT and cisplatin resistance in vivo. Results In the present study, we show that serum level of 14, 15-EET increases in breast cancer patients and 14, 15-EET level of tumor tissue is higher than that of non-cancerous tissue. Moreover, 14, 15-EET increases integrin αvβ3 expression, leading to FAK activation. 14, 15-EET induces breast cancer cell EMT via integrin αvβ3 and FAK/PI3K/AKT cascade activation in vitro. Furthermore, we find that 14, 15-EET induces breast cancer cells EMT and cisplatin resistance in vivo, αvβ3 integrin and the resulting FAK/PI3K/AKT signaling pathway are responsible for 14, 15-EET induced-breast cancer cells cisplatin resistance. Conclusions Our findings suggest that inhibition of 14, 15-EET or inactivation of integrin αvβ3/FAK/PI3K/AKT pathway could serve as a novel approach to reverse EMT and cisplatin resistance in breast cancer cells.
Collapse
Affiliation(s)
- Jing Luo
- Department of Immunology, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, People's Republic of China
| | - Jian-Feng Yao
- Quanzhou Maternal and Child Health Care Hospital, Quanzhou, People's Republic of China
| | - Xiao-Fei Deng
- Department of Immunology, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, People's Republic of China
| | - Xiao-Dan Zheng
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, People's Republic of China
| | - Min Jia
- Laboratory of Clinical Immunology, Wuhan No.1 Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), 215 Zhongshan Dadao, Wuhan, Hubei, 430022, People's Republic of China
| | - Yue-Qin Wang
- Laboratory of Clinical Immunology, Wuhan No.1 Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), 215 Zhongshan Dadao, Wuhan, Hubei, 430022, People's Republic of China
| | - Yan Huang
- Laboratory of Clinical Immunology, Wuhan No.1 Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), 215 Zhongshan Dadao, Wuhan, Hubei, 430022, People's Republic of China
| | - Jian-Hua Zhu
- Laboratory of Clinical Immunology, Wuhan No.1 Hospital, Tongji Medical College, Huazhong University of Science and Technology (HUST), 215 Zhongshan Dadao, Wuhan, Hubei, 430022, People's Republic of China.
| |
Collapse
|