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Shen L, Zhang C, Cui K, Liang X, Zhu G, Hong L. Leptin secreted by adipocytes promotes EMT transition and endometrial cancer progression via the JAK2/STAT3 signalling pathway. Adipocyte 2024; 13:2293273. [PMID: 38090745 PMCID: PMC10732614 DOI: 10.1080/21623945.2023.2293273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 12/06/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Endometrial cancer is a malignant tumour with a high incidence and mortality rate, and obesity is one of the most significant risk factors for the disease. However, it remains unclear whether leptin affects cell activity, proliferation, migration, invasion, and epithelial-mesenchymal transition (EMT). MATERIALS AND METHODS Samples of endometrial cancer tissue were obtained from clinical patients and nude mice Enzyme-linked immunosorbent assays (ELISAs) were performed to assess leptin levels. Western blotting, immunohistochemical (IHC) and immunofluorescence (IF) analyses were conducted to detect EMT, JAK2/STAT3 signalling pathway proteins, and cell proliferation biomarkers. Cell Counting Kit-8 (CCK-8) assays, 5-ethynyl-2'-deoxyuridine (EdU) staining, and Transwell assays were used to evaluate cell activity, proliferation, migration, and invasion, respectively. RESULTS ELISA, western blot and immunohistochemistry (IHC) analyses showed that leptin was highly expressed, and the JAK2/STAT3 signalling pathway was activated in endometrial cancer patients. Cell-based experiments showed that adipocytes secreted leptin, which increased the levels of leptin, and also promoted cell migration and invasion, EMT transition, and cell activity and proliferation. Leptin accelerated cell progression and promoted EMT via the JAK2/STAT3 signalling pathway in a dose-dependent manner. The tumour-promoting effect of leptin on endometrial cancer cells was further verified by in vivo experiments, in which leptin promoted tumour growth and activated the JAK2/STAT3 signalling pathway. CONCLUSION Leptin secreted by adipocytes promotes EMT transition and endometrial cancer progression via the JAK2/STAT3 signalling pathway in a dose-dependent manner.Highlights Endometrial cancer patients have high levels of leptinLeptin promotes EMT transition via the JAK2/STAT3 signalling pathwayLeptin promotes endometrial cancer progression via the JAK2/STAT3 signalling pathwayLeptin promotes endometrial cancer in a dose-dependent manner.
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Affiliation(s)
- Lifan Shen
- Department of Gynecology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Chen Zhang
- Department of Central Lab, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Kaiying Cui
- Department of Gynecology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Xin Liang
- Department of Gynecology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Genhai Zhu
- Department of Gynecology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
| | - Lan Hong
- Department of Gynecology, Hainan General Hospital (Hainan Affiliated Hospital of Hainan Medical University), Haikou, China
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Xu D, Shen H, Tian M, Chen W, Zhang X. Cucurbitacin I inhibits the proliferation of pancreatic cancer through the JAK2/STAT3 signalling pathway in vivo and in vitro. J Cancer 2022; 13:2050-2060. [PMID: 35517401 PMCID: PMC9066209 DOI: 10.7150/jca.65875] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 01/30/2022] [Indexed: 01/08/2023] Open
Abstract
Pancreatic cancer is one of the most aggressive solid malignancies, as it has a 5-year survival rate of less than 10%. The growth and invasion of pancreatic cancer cells into normal tissues and organs make resection and treatment difficult. Finding an effective chemotherapy drug for this disease is crucial. In this study, we selected the tetracyclic triterpenoid compound cucurbitacin I, which may be used as a potential therapeutic drug for treating pancreatic cancer. First, we found that cucurbitacin I inhibited pancreatic cancer proliferation in a dose-time dependent manner. Further studies have shown that cucurbitacin I blocks the cell cycle of pancreatic cancer in the G2/M phase and induces cell apoptosis. In addition, under the action of the compound, the invasion ability of cells was greatly reduced and markedly impaired the growth of pancreatic tumour xenografts in nude mice. Furthermore, the decrease in pancreatic cancer cell proliferation caused by cucurbitacin I appeared to involve JAK2/STAT3 signalling pathway inhibition, and the use of JAK2/STAT3 activators effectively restored the inhibition. In conclusion, our research may provide a basis for the further development of pancreatic cancer treatment drugs.
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Affiliation(s)
- Dongchao Xu
- Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou310000, China.,Hangzhou Institute of Digestive Diseases, Hangzhou310000, China.,Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Hangzhou310000, China
| | - Hongzhang Shen
- Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou310000, China.,Hangzhou Institute of Digestive Diseases, Hangzhou310000, China.,Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Hangzhou310000, China
| | - Mengyao Tian
- Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou310000, China
| | - Wangyang Chen
- Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou310000, China
| | - Xiaofeng Zhang
- Department of Gastroenterology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou310000, China.,Hangzhou Institute of Digestive Diseases, Hangzhou310000, China.,Key Laboratory of Integrated Traditional Chinese and Western Medicine for Biliary and Pancreatic Diseases of Zhejiang Province, Hangzhou310000, China
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Chu Y, Zhu C, Yue C, Peng W, Chen W, He G, Liu C, Lv Y, Gao G, Yao K, Han R, Hu X, Zhang Y, Ye Y. Chorionic villus-derived mesenchymal stem cell-mediated autophagy promotes the proliferation and invasiveness of trophoblasts under hypoxia by activating the JAK2/STAT3 signalling pathway. Cell Biosci 2021; 11:182. [PMID: 34645519 PMCID: PMC8513187 DOI: 10.1186/s13578-021-00681-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 08/18/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Trophoblast dysfunction during pregnancy is fundamentally involved in preeclampsia. Several studies have revealed that human chorionic villous mesenchymal stem cells (CV-MSCs) could regulate trophoblasts function. RESULTS To understand how human chorionic villous mesenchymal stem cells (CV-MSCs) regulate trophoblast function, we treated trophoblasts with CV-MSC supernatant under hypoxic conditions. Treatment markedly enhanced proliferation and invasion and augmented autophagy. Transcriptome and pathway analyses of trophoblasts before and after treatment revealed JAK2/STAT3 signalling as an upstream regulator. In addition, STAT3 mRNA and protein levels increased during CV-MSC treatment. Consistent with these findings, JAK2/STAT3 signalling inhibition reduced the autophagy, survival and invasion of trophoblasts, even in the presence of CV-MSCs, and blocking autophagy did not affect STAT3 activation in trophoblasts treated with CV-MSCs. Importantly, STAT3 overexpression increased autophagy levels in trophoblasts; thus, it positively regulated autophagy in hypoxic trophoblasts. Human placental explants also proved our findings by showing that STAT3 was activated and that LC3B-II levels were increased by CV-MSC treatment. CONCLUSION In summary, our data suggest that CV-MSC-dependent JAK2/STAT3 signalling activation is a prerequisite for autophagy upregulation in trophoblasts.
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Affiliation(s)
- Yijing Chu
- Department of Obstetrics and Gynaecology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000, China
| | - Chengzhan Zhu
- Department of Hepatobiliary and Pancreatic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Chongyu Yue
- Department of Obstetrics and Gynaecology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000, China
| | - Wei Peng
- Department of Obstetrics and Gynaecology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000, China
| | - Weiping Chen
- Department of Obstetrics and Gynaecology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000, China
| | - Guifang He
- Medical Animal Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Changchang Liu
- Medical Animal Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yang Lv
- Department of Obstetrics and Gynaecology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000, China
| | - Guoqiang Gao
- Department of Obstetrics and Gynaecology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000, China
| | - Ke Yao
- Department of Obstetrics and Gynaecology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000, China
| | - Rendong Han
- Department of Obstetrics and Gynaecology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000, China
| | - Xiaoyu Hu
- Department of Obstetrics and Gynaecology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000, China
| | - Yan Zhang
- Department of Obstetrics and Gynaecology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000, China.
| | - Yuanhua Ye
- Department of Obstetrics and Gynaecology, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266000, China.
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Wang J, Du A, Wang H, Li Y. MiR-599 regulates LPS-mediated apoptosis and inflammatory responses through the JAK2/STAT3 signalling pathway via targeting ROCK1 in human umbilical vein endothelial cells. Clin Exp Pharmacol Physiol 2020; 47:1420-1428. [PMID: 32248560 DOI: 10.1111/1440-1681.13316] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 03/21/2020] [Accepted: 03/24/2020] [Indexed: 12/17/2022]
Abstract
MicroRNA plays an integral role in the development of atherosclerosis. Our study aimed to investigate the roles of miR-599 in lipopolysaccharide (LPS)-induced endothelial damage in human umbilical vein endothelial cells (HUVECs). HUVECs were transfected with a miR-599 mimic and negative control, and then exposed to LPS. The expression of miR-599 was detected by quantitative real time-polymerase chain reaction (RT-qPCR). Cell viability was analyzed by CCK-8 assay and trypan blue exclusion assay; the formation of DNA fragments was tested by Cell Death Detection ELISA Plus kit; the incidence of apoptosis was detected by flow cytometry; the expression of p53 and cleaved-caspase 3 (c-caspase 3) was evaluated by western blot. Moreover, the mRNA levels and concentrations of tumour necrosis factor (TNF)-α, interleukin (IL)-6, ICAM-1 and VCAM-1 were assayed by RT-qPCR and ELISA. The results showed that overexpression of miR-599 increased cell viability, reduced DNA fragments, the incidence of apoptosis, as well as the protein levels of p53 and c-caspase 3 in the presence of LPS. TNF-α, IL-6, ICAM-1 and VCAM-1 mRNA levels and concentrations were also decreased upon miR-599 upregulation. In addition, the dual luciferase reporter assay demonstrated that ROCK1 is a direct target of miR-599. MiR-599 overexpression inhibited ROCK1 expression. Induced expression of ROCK1 reversed the roles of miR-599 in apoptosis and inflammation. The gain function of miR-599 function inhibited activation of the JAK2/STAT3 signalling pathway, which was abrogated by overexpression of ROCK1. Taken together, our results indicate that miR-599 attenuates LPS-caused cell apoptosis and inflammatory responses through the JAK2/STAT3 signalling pathway via targeting ROCK1.
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Affiliation(s)
- Jia Wang
- Department of Cardiology, Nursing Department, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Aolin Du
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Hexilin Wang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Yang Li
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
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Gao X, Sun Q, Zhang W, Jiang Y, Li R, Ye J. Anti-inflammatory effect and mechanism of the spirocyclopiperazinium salt compound LXM-15 in rats and mice. Inflamm Res 2018; 67:363-70. [PMID: 29302720 DOI: 10.1007/s00011-017-1127-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 12/05/2017] [Accepted: 12/28/2017] [Indexed: 01/14/2023] Open
Abstract
OBJECTIVE This study aimed to investigate the anti-inflammatory effects of a novel spirocyclopiperazinium salt compound LXM-15, and explore the underlying mechanisms. METHODS Xylene-induced mouse ear oedema and carrageenan-induced rat paw oedema tests were used to evaluate the anti-inflammatory effects of LXM-15. The protein levels of TNF-α, IL-6, phosphorylation of Janus kinase 2 (JAK2) and signal transducer and activator of transcription 3 (STAT3) were detected by ELISA or Western blot analysis. Additionally, receptor blocking test was performed to explore the possible target. RESULTS Intragastric administration with LXM-15 (2, 1, 0.5 mg/kg in mice, and 6, 3, 1.5 mg/kg in rats) produced distinct anti-inflammatory effects in vivo, the highest inhibition percentage was 60 and 52%, respectively (P < 0.01). Following treatment with LXM-15 (6 mg/kg, i.g.), the levels of TNF-α and IL-6 in the rats paws were attenuated by 40 and 41%; and the phosphorylation of JAK2 and STAT3 was restrained by 35 and 45%, respectively (P < 0.01). All effects of LXM-15 were blocked by pretreatment with methyllycaconitine citrate or tropicamide. CONCLUSION This study provides the first report that the spirocyclopiperazinium salt compound LXM-15 displays considerable anti-inflammatory effects. The underlying mechanism may be through activating the peripheral α7 nicotinic acetylcholine receptor and M4 muscarinic acetylcholine receptor, leading to the inhibition of the JAK2/STAT3 signalling pathway, eventually resulting in the reduction of TNF-α and IL-6.
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