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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] [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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Xin Y, Sun X, Ren L, Chen G, Chen Y, Ni Y, He B. Maternal preconceptional inflammation transgenerationally alters metabolic and behavioral phenotypes in offspring. Life Sci 2023; 321:121577. [PMID: 36933826 DOI: 10.1016/j.lfs.2023.121577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/10/2023] [Accepted: 03/12/2023] [Indexed: 03/18/2023]
Abstract
AIMS Evidence is accumulating that maternal inflammation induces phenotypic changes in the next generation. However, whether maternal preconceptional inflammation alters metabolic and behavioral phenotypes in offspring remains poorly understood. MAIN METHODS Female mice were injected with either lipopolysaccharide or saline to establish the inflammatory model and then allowed to mate with normal males. Offspring from both control and inflammatory dams were subsequently given chow diet and water ad libitum, without any challenge, for metabolic and behavioral tests. KEY FINDINGS Male offspring derived from inflammatory mothers (Inf-F1) maintained on the chow diet developed impaired glucose tolerance and hepatic ectopic fat deposition. Hepatic transcriptome sequencing showed the largest gene changes related to the metabolic pathway. Moreover, Inf-F1 mice exhibited anxiety- and depressive-like behaviors and were accompanied by higher serum corticosterone concentration and lower glucocorticoid receptor abundance in the hippocampus. SIGNIFICANCE The results expand the current knowledge of developmental programming of health and disease to include maternal preconceptional health and provide a basis for understanding metabolic and behavioral alterations in offspring linked to maternal inflammation.
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Affiliation(s)
- Yining Xin
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Xiaoxiao Sun
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Li Ren
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Guo Chen
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yingqi Chen
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yingdong Ni
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China; MOE Joint International Research Laboratory of Animal Health & Food Safety, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Bin He
- Key Laboratory of Animal Physiology & Biochemistry, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, PR China; MOE Joint International Research Laboratory of Animal Health & Food Safety, Nanjing Agricultural University, Nanjing 210095, PR China.
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Reschke L, Afrin S, El Sabah M, Charewycz N, Miyashita-Ishiwata M, Borahay MA. Leptin induces leiomyoma cell proliferation and extracellular matrix deposition via JAK2/STAT3 and MAPK/ERK pathways. F&S SCIENCE 2022; 3:383-391. [PMID: 35598777 PMCID: PMC9669119 DOI: 10.1016/j.xfss.2022.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/11/2022] [Accepted: 05/13/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To investigate the molecular effects of leptin on uterine leiomyoma cells. DESIGN Experimental study using in vitro culture of immortalized human leiomyoma (HuLM) cells. SETTING Academic university center. PATIENT(S) Women with uterine fibroids who underwent a hysterectomy or myomectomy. INTERVENTION(S) Administration of human recombinant leptin to the media of cultured HuLM cells separately or in combination with pharmacologic Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) or mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) inhibitors. MAIN OUTCOME MEASURE(S) We examined HuLM tissues and cells for the expression of the leptin receptor, termed OB-R. Cellular proliferation was measured at 6, 24, and 48 hours using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide assay. Protein expression levels of proliferating cell nuclear antigen, collagen 1, phosphorylated STAT3/total STAT3, and phosphorylated ERK1/2 and total ERK1/2 were quantified using immunoblotting. Pharmacologic inhibitors were employed to further assess the role of the JAK2/STAT3 and MAPK/ERK pathways in the proliferative response. RESULT(S) The presence of OB-R was confirmed in clinical leiomyoma and myometrial tissue obtained from 3 separate human subjects using immunofluorescence staining, and the expression of OB-R in HuLM cells was identified using immunoblotting. There was no significant difference in the expression of the leptin receptor in the myometrium compared with that in the leiomyoma tissue. Leptin stimulated cell proliferation and extracellular matrix (ECM) deposition at 24 hours after treatment. Pretreatment with a JAK2/STAT3 inhibitor attenuated ECM deposition, and pretreatment with a MAPK/ERK inhibitor significantly decreased leptin's stimulatory effect on cell proliferation and ECM deposition. CONCLUSION(S) Leptin induces a proliferative response and ECM deposition in HuLM cells. These findings suggest that leptin, acting through the JAK2/STAT3 and MAPK/ERK pathways, is involved in the development of uterine leiomyomas, which may partly explain their increased incidence in obese women.
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Affiliation(s)
- Lauren Reschke
- Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Sadia Afrin
- Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Malak El Sabah
- Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Natasha Charewycz
- Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Mariko Miyashita-Ishiwata
- Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Mostafa A Borahay
- Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland.
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Kim TH, Bae N, Kim T, Hsu AL, Hunter MI, Shin JH, Jeong JW. Leptin Stimulates Endometriosis Development in Mouse Models. Biomedicines 2022; 10:biomedicines10092160. [PMID: 36140261 PMCID: PMC9496281 DOI: 10.3390/biomedicines10092160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 08/23/2022] [Accepted: 08/27/2022] [Indexed: 11/24/2022] Open
Abstract
Endometriosis is a chronic inflammatory condition in women, and obesity leads to an inflammatory condition that is directly involved in the etiology of endometriosis. However, observational studies have shown an inverse correlation between endometriosis and a low body mass index (BMI). Obesity does not protect against endometriosis, and on the contrary, an increased BMI may lead to more severe forms of the disease. To determine the effect of obesity on endometriosis, diet-induced and genetically engineered obese mouse models were integrated with endometriosis mouse models with fluorescence-tagged ectopic lesions. High-fat diet-induced obese mice revealed a significant increase in endometriosis development compared with regular-diet control mice. However, obese recipient mice with leptin deficiency and leptin receptor deficiency showed suppressed endometriosis development compared with control mice. Furthermore, donor uterine tissues with leptin deficiency and leptin receptor deficiency suppressed endometriosis development compared with control donor in control recipient mice. Importantly, we revealed that aberrant high levels of leptin concentration significantly increased endometriosis development compared with vehicle treatment group in control mice with normal body weight. Our results suggest that leptin and its receptor are critical for endometriosis development.
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Affiliation(s)
- Tae Hoon Kim
- Department of Obstetrics, Gynecology & Reproductive Biology, Michigan State University, Grand Rapids, MI 49534, USA
| | - Nayoung Bae
- Division of Reproductive Endocrinology, Department of Obstetrics and Gynecology, Guro Hospital, Korea University Medical Center, Seoul 02841, Korea
| | - Taeho Kim
- Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA
| | - Albert L. Hsu
- Reproductive Medicine and Fertility Center, Department of Obstetrics, Gynecology & Women’s Health, University of Missouri School of Medicine, Columbia, MO 65202, USA
| | - Mark I. Hunter
- Department of Obstetrics, Gynecology & Women’s Health, University of Missouri School of Medicine, Columbia, MO 65202, USA
| | - Jung-Ho Shin
- Division of Reproductive Endocrinology, Department of Obstetrics and Gynecology, Guro Hospital, Korea University Medical Center, Seoul 02841, Korea
- Correspondence: (J.-H.S.); (J.-W.J.)
| | - Jae-Wook Jeong
- Department of Obstetrics, Gynecology & Reproductive Biology, Michigan State University, Grand Rapids, MI 49534, USA
- Correspondence: (J.-H.S.); (J.-W.J.)
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Li X, Xiong W, Long X, Dai X, Peng Y, Xu Y, Zhang Z, Zhang L, Liu Y. Inhibition of METTL3/m6A/miR126 promotes the migration and invasion of endometrial stromal cells in endometriosis. Biol Reprod 2021; 105:1221-1233. [PMID: 34382070 DOI: 10.1093/biolre/ioab152] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 07/17/2021] [Accepted: 08/05/2021] [Indexed: 11/13/2022] Open
Abstract
N6-methyladenosine (m6A), one of the most abundant RNA modifications, is involved in the progression of many diseases, but its role and related molecular mechanisms in endometriosis remain unknown. To address these issues, we detected m6A levels in normal, eutopic and ectopic endometrium and found the m6A levels decreased in eutopic and ectopic endometrium compared with normal endometrium. In addition, we proved that methyltransferase-like 3 (METTL3) downregulation accounted for m6A reduction in endometriosis. Furthermore, we observed that METTL3 knockdown facilitated the migration and invasion of human endometrial stromal cells (HESCs), while METTL3 overexpression exerted opposite effects, suggesting that METTL3 downregulation might contribute to endometriosis development by enhancing cellular migration and invasion. Mechanistically, METTL3-dependent m6A was involved in the DGCR8-mediated maturation of primary microRNA126 (miR126, pri-miR126). Moreover, miR126 inhibitor significantly enhanced the migration and invasion of METTL3-overexpressing HESCs, whereas miR126 mimics attenuated the migration and invasion of METTL3-silenced HESCs. Our study revealed the METTL3/m6A/miR126 pathway, whose inhibition might contribute to endometriosis development by enhancing cellular migration and invasion. It also showed that METTL3 might be a novel diagnostic biomarker and therapeutic target for endometriosis.
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Affiliation(s)
- Xiaoou Li
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China
| | - Wenqian Xiong
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China
| | - Xuefeng Long
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China
| | - Xin Dai
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China
| | - Yuan Peng
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China
| | - Ying Xu
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China
| | - Zhibing Zhang
- Department of Physiology, Wayne State University, 275E Hancock Street, Detroit, 48201, Michigan
| | - Ling Zhang
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China
| | - Yi Liu
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, China
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Tian Z, Wang Y, Zhao Y, Chang XH, Zhu HL. Serum and peritoneal fluid leptin levels in endometriosis: a systematic review and meta-analysis. Gynecol Endocrinol 2021; 37:689-693. [PMID: 33355014 DOI: 10.1080/09513590.2020.1862789] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The role of leptin in the development of endometriosis has been investigated previously. However, researches on the change of leptin levels in endometriosis remains controversial. So, we aimed to clarify changes of leptin levels in patients with endometriosis and their association with the progression of endometriosis. We searched PubMed, Embase, Web of Science, and The Cochrane Library to identify relevant studies published before May 25, 2020. The detected levels of leptin in patients with endometriosis versus controls were evaluated in this meta-analysis. Eighteen studies met our inclusion criteria, five studies detected serum, nine detected peritoneal fluid and another four detected both serum and peritoneal fluid leptin levels. The overall results showed that peritoneal fluid leptin levels in patients with endometriosis was significantly higher than that in the control group, but the serum and corrected peritoneal fluid leptin levels were comparable in both groups. Subgroup analysis failed to eliminate the high degree of heterogeneity included in the studies and showed that peritoneal fluid leptin levels were significantly elevated in both early and advanced endometriosis. In conclusion, peritoneal fluid rather than serum leptin levels was elevated in patients with endometriosis, which did not seem to be related to the severity of endometriosis, but was related to body mass index.
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Affiliation(s)
- Zhao Tian
- Department of Obstetrics and Gynecology, People's Hospital, Peking University, Beijing, China
| | - Yue Wang
- Department of Obstetrics and Gynecology, People's Hospital, Peking University, Beijing, China
| | - Yan Zhao
- Department of Obstetrics and Gynecology, People's Hospital, Peking University, Beijing, China
| | - Xiao-Hong Chang
- Department of Obstetrics and Gynecology, People's Hospital, Peking University, Beijing, China
| | - Hong-Lan Zhu
- Department of Obstetrics and Gynecology, People's Hospital, Peking University, Beijing, China
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Kalaitzopoulos DR, Lempesis IG, Samartzis N, Kolovos G, Dedes I, Daniilidis A, Nirgianakis K, Leeners B, Goulis DG, Samartzis EP. Leptin concentrations in endometriosis: A systematic review and meta-analysis. J Reprod Immunol 2021; 146:103338. [PMID: 34126469 DOI: 10.1016/j.jri.2021.103338] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/21/2021] [Accepted: 05/25/2021] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Endometriosis is an inflammatory condition, affecting mainly women of reproductive age. Leptin is a regulator of food intake and energy expenditure, posing pleiotropic actions, and regulating immunity and fertility. The aim of this study was to systematically review the literature regarding leptin concentrations in biological fluids and tissues of women with endometriosis, and to investigate and propose a possible role of leptin in the pathophysiology of endometriosis. MATERIALS AND METHODS A systematic search of the literature was conducted in two electronic databases (MEDLINE, COCHRANE) and grey literature for original research articles on humans, published in any language. RESULTS Twenty-nine studies with 1291 women with endometriosis and 1664 controls were included in the systematic review. Peritoneal fluid and follicular fluid leptin concentrations were higher in endometriosis compared with control group [mean difference (MD) 7.10, 95 % confidence interval (CI) 4.76 to 9.44 ng/mL, 18 studies), (MD 1.35, 95 % CI 0.54-2.17 ng/ml, 2 studies) respectively. No differences were evident in serum (MD 0.92, 95 % CI -0.84 to 2.68 ng/mL, 12 studies) or plasma (MD -0.95, 95 % CI -4.63 to 2.72 ng/mL, 3 studies) between the groups. No meta-analysis was conducted for ovarian tissue leptin (2 studies). CONCLUSIONS This meta-analysis provided evidence for increased leptin concentrations in both peritoneal fluid and follicular fluid of women with endometriosis compared with control; these differences were not present in the serum or plasma. The above results support a potential pathophysiologic role for leptin in the local microenvironment while declines its use as a blood diagnostic marker. Furthermore, we propose a possible role of leptin in the pathophysiology of endometriosis.
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Affiliation(s)
| | - Ioannis G Lempesis
- Institute of Metabolism and Systems Research (IMSR), College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK; Centre for Endocrinology, Diabetes and Metabolism (CEDAM), Birmingham Health Partners, Birmingham, UK; Department of Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, the Netherlands
| | - Nicolas Samartzis
- Department of Gynecology and Obstetrics, Cantonal Hospital Schaffhausen, Geissbergstrasse 81, 8208, Schaffhausen, Switzerland
| | - Georgios Kolovos
- Department of Gynecology and Obstetrics, Cantonal Hospital Schaffhausen, Geissbergstrasse 81, 8208, Schaffhausen, Switzerland
| | - Ioannis Dedes
- Department of Gynecology, University Hospital Zurich, Frauenklinikstr. 10, CH 8091 Zurich, Switzerland
| | - Angelos Daniilidis
- 2nd University Department of Obstetrics and Gynecology, Hippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Konstantinos Nirgianakis
- Department of Obstetrics and Gynaecology, University Hospital of Bern, Inselspital, Friedbühlstrasse 19, 3010, Bern, Switzerland
| | - Brigitte Leeners
- Division of Reproductive Endocrinology, University Hospital Zurich, Frauenklinikstr. 10, CH 8091 Zurich, Switzerland
| | - Dimitrios G Goulis
- Unit of Reproductive Endocrinology, 1st Department of Obstetrics and Gynecology, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Shi M, Sekulovski N, Whorton AE, MacLean JA, Greaves E, Hayashi K. Efficacy of niclosamide on the intra-abdominal inflammatory environment in endometriosis. FASEB J 2021; 35:e21584. [PMID: 33860549 PMCID: PMC10777336 DOI: 10.1096/fj.202002541rrr] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 03/23/2021] [Accepted: 03/25/2021] [Indexed: 12/24/2022]
Abstract
Endometriosis, a common gynecological disease, causes chronic pelvic pain and infertility in women of reproductive age. Due to the limited efficacy of current therapies, a critical need exists to develop new treatments for endometriosis. Inflammatory dysfunction, instigated by abnormal macrophage (MΦ) function, contributes to disease development and progression. However, the fundamental role of the heterogeneous population of peritoneal MΦ and their potential druggable functions is uncertain. Here we report that GATA6-expressing large peritoneal MΦ (LPM) were increased in the peritoneal cavity following lesion induction. This was associated with increased cytokine and chemokine secretion in the peritoneal fluid (PF), as well as MΦ infiltration, vascularization and innervation in endometriosis-like lesions (ELL). Niclosamide, an FDA-approved anti-helminthic drug, was effective in reducing LPM number, but not small peritoneal MΦ (SPM), in the PF. Niclosamide also inhibits aberrant inflammation in the PF, ELL, pelvic organs (uterus and vagina) and dorsal root ganglion (DRG), as well as MΦ infiltration, vascularization and innervation in the ELL. PF from ELL mice stimulated DRG outgrowth in vitro, whereas the PF from niclosamide-treated ELL mice lacked the strong stimulatory nerve growth response. These results suggest LPM induce aberrant inflammation in endometriosis promoting lesion progression and establishment of the inflammatory environment that sensitizes peripheral nociceptors in the lesions and other pelvic organs, leading to increased hyperalgesia. Our findings provide the rationale for targeting LPM and their functions with niclosamide and its efficacy in endometriosis as a new non-hormonal therapy to reduce aberrant inflammation which may ultimately diminish associated pain.
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Affiliation(s)
- Mingxin Shi
- Department of Physiology, Southern Illinois University School of Medicine, Carbondale, IL, USA
- Center for Reproductive Biology, Washington State University, Pullman, WA, USA
| | - Nikola Sekulovski
- Department of Physiology, Southern Illinois University School of Medicine, Carbondale, IL, USA
| | - Allison E. Whorton
- Department of Physiology, Southern Illinois University School of Medicine, Carbondale, IL, USA
| | - James A. MacLean
- Department of Physiology, Southern Illinois University School of Medicine, Carbondale, IL, USA
- Center for Reproductive Biology, Washington State University, Pullman, WA, USA
| | - Erin Greaves
- Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, UK
| | - Kanako Hayashi
- Department of Physiology, Southern Illinois University School of Medicine, Carbondale, IL, USA
- Center for Reproductive Biology, Washington State University, Pullman, WA, USA
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Bora G, Yaba A. The role of mitogen-activated protein kinase signaling pathway in endometriosis. J Obstet Gynaecol Res 2021; 47:1610-1623. [PMID: 33590617 DOI: 10.1111/jog.14710] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/10/2021] [Accepted: 01/29/2021] [Indexed: 12/20/2022]
Abstract
AIM Endometriosis is an estrogen-dependent chronic inflammatory condition which causes pain, infertility, and predisposition for ovarian cancer. Endometriosis generates a unique microenvironment for survivability of endometriotic lesions which includes cell proliferation, differentiation, migration, and apoptosis. For these cellular activities, cascading activations of intracellular kinases are needed. Many kinase signaling pathways, IKKβ/NK-κB pathway, PI3K/AKT/mTOR, and the mitogen-activated protein kinase (MAPK) pathways (ERK1/2, p38, and JNK), are activated in endometriosis. In this review, we focus on the role of MAPK pathways in endometriosis. METHODS To identify the role of MAP Kinase signaling pathway in endometriosis we searched the Pubmed database using the search terms in various combinations "endometriosis," "endometrium," "ovary," "MAPK pathway," "ERK pathway," "p38 pathway," "JNK pathway," "estrogen," and "progesterone." RESULTS According to the current literature, MAPK signaling pathway has various roles in generating microenvironment and survival of endometriosis. Abnormal MAPK activation in migration, implantation, growth, invasion into the pelvic structures, proliferation, and apoptosis leads to the form of endometriosis and to worsen the condition in patients with endometriosis. CONCLUSION To further investigations on the effective and long-term endometriosis treatment, MAPK signaling pathways may be targeted. Molecular mechanism of MAPK signaling pathway in endometriosis should be more deeply understood and clinical trials should be more commonly performed for possible new endometriosis treatments to improve fertility and rescue endometriosis irreversibly.
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Affiliation(s)
- Gizem Bora
- Department of Histology and Embryology, Yeditepe University School of Medicine, İstanbul, Turkey
| | - Aylin Yaba
- Department of Histology and Embryology, Yeditepe University School of Medicine, İstanbul, Turkey
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Yin B, Jiang H, Liu X, Guo SW. Enriched Environment Decelerates the Development of Endometriosis in Mouse. Reprod Sci 2020; 27:1423-1435. [PMID: 32318984 DOI: 10.1007/s43032-019-00117-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 10/21/2019] [Indexed: 12/16/2022]
Abstract
We tested the hypothesis that enriched environment (EE), consisting of enlarged space, and increased physical activity and social interactions, hinders the development of endometriosis through attenuated adrenergic signaling, enhanced autophagy, and reduced leptin levels. Two mouse experiments were performed. In Experiment 1, 40 female Balb/C mice were randomly divided into four equal-sized groups, the SE (standard environment), EE, p-EE (EE instituted after endometriosis induction), and the d-EE (SE housing but received uterine fragments from EE donors) groups. Housing intervention was initiated 3 weeks before the induction of endometriosis and continued for 3 weeks after induction. In Experiment 2, 20 female mice were randomly divided into SE and EE groups, and the plasma leptin levels were measured. We measured lesion weight and hotplate latency and performed Masson trichrome staining as well as immunohistochemistry analysis of β2 adrenergic receptor (ADRB2), dopamine receptor D2 (DRD2), vascular endothelial growth factor (VEGF), and microtubule-associated protein light chain 3 (LC3). We found that EE reduced the lesion weight by 40.8% as compared with SE mice, but the reduction in p-EE and d-EE mice did not reach statistical significance. EE significantly reduced staining levels of ADRB2 and VEGF as well as the extent of lesional fibrosis but increased staining levels of LC3 and DRD2 in lesions as compared with the SE group. EE mice had reduced plasma leptin levels as compared with SE mice. Thus, EE decelerates the development of endometriosis and fibrogenesis and improved generalized hyperalgesia, possibly through increased DRD2 expression but decreased expression of ADRB2 and VEGF as well as enhanced autophagy and reduced leptin level.
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Affiliation(s)
- Bo Yin
- Shanghai OB/GYN Hospital, Fudan University, Shanghai, 200011, China
| | - Hongyuan Jiang
- Shanghai OB/GYN Hospital, Fudan University, Shanghai, 200011, China
| | - Xishi Liu
- Shanghai OB/GYN Hospital, Fudan University, Shanghai, 200011, China. .,Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University, Shanghai, China.
| | - Sun-Wei Guo
- Shanghai OB/GYN Hospital, Fudan University, Shanghai, 200011, China. .,Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University, Shanghai, China.
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Zhang WF, Jin YC, Li XM, Yang Z, Wang D, Cui JJ. Protective effects of leptin against cerebral ischemia/reperfusion injury. Exp Ther Med 2019; 17:3282-3290. [PMID: 30988703 PMCID: PMC6447799 DOI: 10.3892/etm.2019.7377] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 02/04/2019] [Indexed: 12/12/2022] Open
Abstract
In recent years, the use of thrombolytic therapy for treating ischemia/reperfusion injury has resulted in damage to the self-regulatory mechanisms of the brain. This is due to the increased production of free radicals, excitatory amino acids and pro-inflammatory cytokines causing secondary damage to the brain. Simple thrombolytic therapy has not been the best approach for treating ischemia/reperfusion injury. Excessive perfusion leads to failure of the body's self-regulatory functions, which in turn increases the area of cerebral edema and aggravates cerebral ischemia. Previous studies have evaluated the satiety hormone leptin as a link between energy expenditure and obesity. Of note, leptin, which is involved in brain development, synaptic transmission and angiogenesis following ischemia/reperfusion injury, has been considered an important factor for treating ischemia/reperfusion injury. The present review outlines the discovery of leptin and discusses its association with cerebral ischemia/reperfusion.
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Affiliation(s)
- Wen-Fang Zhang
- Department of Biomedical Research Center, Binzhou Medical University, Yantai, Shandong 264000, P.R. China
| | - Yin-Chuan Jin
- Department of Histology and Embryology, Binzhou Medical University, Yantai, Shandong 264000, P.R. China
| | - Xiao-Mei Li
- Department of Cardiology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong 264000, P.R. China
| | - Zhi Yang
- Department of Cardiology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong 264000, P.R. China
| | - Dong Wang
- Department of Cardiology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong 264000, P.R. China
| | - Jing-Jing Cui
- Department of Medical Affairs, Affiliated Hospital of Binzhou Medical College, Binzhou, Shandong 256603, P.R. China
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12
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Panir K, Schjenken JE, Robertson SA, Hull ML. Non-coding RNAs in endometriosis: a narrative review. Hum Reprod Update 2019; 24:497-515. [PMID: 29697794 DOI: 10.1093/humupd/dmy014] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 04/05/2018] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Endometriosis is a benign gynaecological disorder, which affects 10% of reproductive-aged women and is characterized by endometrial cells from the lining of the uterus being found outside the uterine cavity. However, the pathophysiological mechanisms causing the development of this heterogeneous disease remain enigmatic, and a lack of effective biomarkers necessitates surgical intervention for diagnosis. There is international recognition that accurate non-invasive diagnostic tests and more effective therapies are urgently needed. Non-coding RNA (ncRNA) molecules, which are important regulators of cellular function, have been implicated in many chronic conditions. In endometriosis, transcriptome profiling of tissue samples and functional in vivo and in vitro studies demonstrate that ncRNAs are key contributors to the disease process. OBJECTIVE AND RATIONALE In this review, we outline the biogenesis of various ncRNAs relevant to endometriosis and then summarize the evidence indicating their roles in regulatory pathways that govern disease establishment and progression. SEARCH METHODS Articles from 2000 to 2016 were selected for relevance, validity and quality, from results obtained in PubMed, MEDLINE and Google Scholar using the following search terms: ncRNA and reproduction; ncRNA and endometriosis; miRNA and endometriosis; lncRNA and endometriosis; siRNA and endometriosis; endometriosis; endometrial; cervical; ovary; uterus; reproductive tract. All articles were independently screened for eligibility by the authors. OUTCOMES This review integrates extensive information from all relevant published studies focusing on microRNAs, long ncRNAs and short inhibitory RNAs in endometriosis. We outline the biological function and synthesis of microRNAs, long ncRNAs and short inhibitory RNAs and provide detailed findings from human research as well as functional studies carried out both in vitro and in vivo, including animal models. Although variability in findings between individual studies exists, collectively, the extant literature justifies the conclusion that dysregulated ncRNAs are a significant element of the endometriosis condition. WIDER IMPLICATIONS There is a compelling case that microRNAs, long non-coding RNAs and short inhibitory RNAs have the potential to influence endometriosis development and persistence through modulating inflammation, proliferation, angiogenesis and tissue remodelling. Rapid advances in ncRNA biomarker discovery and therapeutics relevant to endometriosis are emerging. Unravelling the significance of ncRNAs in endometriosis will pave the way for new diagnostic tests and identify new therapeutic targets and treatment approaches that have the potential to improve clinical options for women with this disabling condition.
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Affiliation(s)
- Kavita Panir
- The Robinson Research Institute and Adelaide Medical School, The University of Adelaide, Adelaide, South Australia, Australia
| | - John E Schjenken
- The Robinson Research Institute and Adelaide Medical School, The University of Adelaide, Adelaide, South Australia, Australia
| | - Sarah A Robertson
- The Robinson Research Institute and Adelaide Medical School, The University of Adelaide, Adelaide, South Australia, Australia
| | - M Louise Hull
- The Robinson Research Institute and Adelaide Medical School, The University of Adelaide, Adelaide, South Australia, Australia.,Fertility SA, Adelaide, South Australia, Australia.,Department of Obstetrics and Gynaecology, Women's and Children's Hospital Adelaide, South Australia, Australia
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13
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Gastiazoro MP, Guerrero-Schimpf M, Durando M, Lazzarino GP, Andreoli MF, Zierau O, Luque EH, Ramos JG, Varayoud J. Induction of uterine hyperplasia after cafeteria diet exposure. Mol Cell Endocrinol 2018; 477:112-120. [PMID: 29908751 DOI: 10.1016/j.mce.2018.06.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 06/12/2018] [Accepted: 06/13/2018] [Indexed: 12/16/2022]
Abstract
Our aim was to evaluate whether chronic administration of CAF affects the uterus and induces the morphological and molecular changes associated with endometrial hyperplasia. Female Wistar rats exposed to CAF from weaning for 20 weeks displayed increased energy intake, body weight and fat depots, but did not develop metabolic syndrome. The adult uteri showed an increase in glandular volume fraction and stromal area. The epithelial proliferation rate and protein expression of oestrogen receptor alpha (ERα) were also increased. The CAF diet enhanced leptin serum levels and the long form of leptin receptor (Ob-Rb) mRNA expression in the uterus. No changes were detected in either insulin serum levels or those of insulin growth factor I (IGF-I) mRNA expression. However the levels of IGF-I receptor (IGF-IR) mRNA were lower in CAF-fed animals. Overall, the results indicate that our rat model of the CAF diet produces morphological and molecular changes associated with uterine hyperplasia and could predispose to endometrial carcinogenesis.
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Affiliation(s)
- María Paula Gastiazoro
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina.
| | - Marlise Guerrero-Schimpf
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina.
| | - Milena Durando
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina.
| | - Gisela Paola Lazzarino
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina.
| | - María Florencia Andreoli
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina.
| | - Oliver Zierau
- Molecular Cell Physiology and Endocrinology, Institute for Zoology, Technische Universität Dresden, 01062, Dresden, Germany.
| | - Enrique Hugo Luque
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina.
| | - Jorge Guillermo Ramos
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina.
| | - Jorgelina Varayoud
- Instituto de Salud y Ambiente del Litoral (ISAL), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina.
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14
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Park S, Lim W, Song G. Delphinidin induces antiproliferation and apoptosis of endometrial cells by regulating cytosolic calcium levels and mitochondrial membrane potential depolarization. J Cell Biochem 2018; 120:5072-5084. [DOI: 10.1002/jcb.27784] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 09/06/2018] [Indexed: 02/01/2023]
Affiliation(s)
- Sunwoo Park
- Department of Biotechnology, Institute of Animal Molecular Biotechnology, College of Life Sciences and Biotechnology Korea University Seoul Korea
| | - Whasun Lim
- Department of Biomedical Sciences Marine Biological Food & Drug Research Center, Catholic Kwandong University Gangneung Korea
| | - Gwonhwa Song
- Department of Biotechnology, Institute of Animal Molecular Biotechnology, College of Life Sciences and Biotechnology Korea University Seoul Korea
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15
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Guo S. Cancer driver mutations in endometriosis: Variations on the major theme of fibrogenesis. Reprod Med Biol 2018; 17:369-397. [PMID: 30377392 PMCID: PMC6194252 DOI: 10.1002/rmb2.12221] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/03/2018] [Accepted: 06/24/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND One recent study reports cancer driver mutations in deep endometriosis, but its biological/clinical significance remains unclear. Since the natural history of endometriosis is essentially gradual progression toward fibrosis, it is thus hypothesized that the six driver genes reported to be mutated in endometriosis (the RP set) may play important roles in fibrogenesis but not necessarily malignant transformation. METHODS Extensive PubMed search to see whether RP and another set of driver genes not yet reported (NR) to be mutated in endometriosis have any roles in fibrogenesis. All studies reporting on the role of fibrogenesis of the genes in both RP and NR sets were retrieved and evaluated in this review. RESULTS All six RP genes were involved in various aspects of fibrogenesis as compared with only three NR genes. These nine genes can be anchored in networks linking with their upstream and downstream genes that are known to be aberrantly expressed in endometriosis, piecing together seemingly unrelated findings. CONCLUSIONS Given that somatic driver mutations can and do occur frequently in physiologically normal tissues, it is argued that these mutations in endometriosis are not necessarily synonymous with malignancy or premalignancy, but the result of enormous pressure for fibrogenesis.
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Affiliation(s)
- Sun‐Wei Guo
- Shanghai Obstetrics and Gynecology HospitalFudan UniversityShanghaiChina
- Shanghai Key Laboratory of Female Reproductive Endocrine‐Related DiseasesShanghaiChina
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16
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Feng B, Cao S, Zhai J, Ren Y, Hu J, Tian Y, Weng X. Roles and mechanisms of leptin in osteogenic stimulation in cervical ossification of the posterior longitudinal ligament. J Orthop Surg Res 2018; 13:165. [PMID: 29970120 PMCID: PMC6029428 DOI: 10.1186/s13018-018-0864-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 06/14/2018] [Indexed: 12/17/2022] Open
Abstract
Background Hyperleptinemia is a common feature of obese people, and leptin, an adipocyte-derived cytokine, is believed to be an important factor in the pathogenesis of cervical ossification of the posterior longitudinal ligament(C-OPLL). So this research was to identify the relation between the serum leptin and bone metabolic markers and how the leptin induced osteogenic effect in C-OPLL. Methods Sixty-four samples were selected to determine the concentration of leptin, insulin, and alkaline phosphatase. And the association of leptin with these factors was also examined. We also evaluate the effect of leptin on the development of C-OPLL and further explored the possible underlying mechanism in vitro. Results We found that serum leptin concentrations were higher in females than in males. Serum leptin and ALP concentrations were increased significantly in C-OPLL females compared to non-OPLL females. In OPLL subjects, the serum leptin concentration corrected for body mass index correlated negatively with the ALP concentrations. In C-OPLL cells, leptin treatment led to a significant increase in mRNA expressions of ALP and OCN and formation of mineralized nodule. Our experiments reported here that osteogenic effect of leptin in C-OPLL cells could be mediated via ERK1/2, p38 MAPK, and/or JNK signaling pathways. Conclusions From this research, we got that leptin treatment led to a significant increase in mRNA expressions of ALP and OCN and formation of mineralized nodule. And the osteogenic effect of leptin in C-OPLL cells could be mediated via ERK1/2, p38 MAPK, and/or JNK signaling pathways.
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Affiliation(s)
- Bin Feng
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Shiliang Cao
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Jiliang Zhai
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Yi Ren
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Jianhua Hu
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Ye Tian
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China.
| | - Xisheng Weng
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China.
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17
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Han Y, Xu G, Zhang J, Yan M, Li X, Ma B, Jun L, Wang SJ, Tan J. Leptin induces osteocalcin expression in ATDC5 cells through activation of the MAPK-ERK1/2 signaling pathway. Oncotarget 2018; 7:64021-64029. [PMID: 27564111 PMCID: PMC5325422 DOI: 10.18632/oncotarget.11578] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 08/11/2016] [Indexed: 11/25/2022] Open
Abstract
Both leptin and osteocalcin have been found to affect growth-plate cartilage development through regulation of the physiologic processes of endochondral bone formation. Leptin mediates bone development and osteocalcin secreted in the late stage of osteoblast differentiation. The relationship between leptin and osteocalcin expression in the chondrogenic cells line is still not clear. Thus, the aim of this study was to explore the effect of leptin on the expression of osteocalcin in chondrocytes. We used clonal mouse chondrogenic ATDC5 cells to investigate the relationship between leptin and osteocalcin. We found that both leptin and osteocalcin expression were dynamically expressed during ATDC5 cell differentiation from 4 to 21 days. We also found that leptin significantly upregulated osteocalcin mRNA and protein levels 24 h after leptin stimulation. However, different concentrations and exposure times of osteocalcin did not affect the levels of leptin protein. Furthermore, we confirmed that leptin augmented the phosphorylation of extracellular signal-regulated kinase 1/2 (ERK1/2) in a time-dependent manner but not p38 or AKT. Inhibition of pERK1/2 expression by a specific ERK1/2 inhibitor U0126 and a special small interfering RNA attenuated levels of leptin-induced osteocalcin expression, indicating that ERK1/2 mediates, in part, the effects of leptin on osteocalcin. Taken together, our results suggest that leptin regulates the expression of osteocalcin in growth plate chondrocytes via the ERK1/2 signaling pathway, while there is no effect on the phosphorylation of either p38 or AKT.
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Affiliation(s)
- Yingchao Han
- Department of Spine Surgery, Shanghai East Hospital, Tongji University, School of Medicine, Shanghai, 200120, China
| | - Guanghui Xu
- Department of Orthopedics, Shanghai Zhabei District Central hospital, Zhonghuaxin Road Zhabei District, Shanghai, 200070, China
| | - Jingjie Zhang
- Department of Spine Surgery, Shanghai East Hospital, Tongji University, School of Medicine, Shanghai, 200120, China
| | - Meijun Yan
- Department of Spine Surgery, Shanghai East Hospital, Tongji University, School of Medicine, Shanghai, 200120, China
| | - Xinhua Li
- Department of Spine Surgery, Shanghai East Hospital, Tongji University, School of Medicine, Shanghai, 200120, China
| | - Bin Ma
- Department of Spine Surgery, Shanghai East Hospital, Tongji University, School of Medicine, Shanghai, 200120, China
| | - Lili Jun
- Department of Spine Surgery, Shanghai East Hospital, Tongji University, School of Medicine, Shanghai, 200120, China
| | - Shan-Jin Wang
- Department of Spine Surgery, Shanghai East Hospital, Tongji University, School of Medicine, Shanghai, 200120, China
| | - Jun Tan
- Department of Spine Surgery, Shanghai East Hospital, Tongji University, School of Medicine, Shanghai, 200120, China
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18
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Hsiao KY, Chang N, Tsai JL, Lin SC, Tsai SJ, Wu MH. Hypoxia-inhibited DUSP2 expression promotes IL-6/STAT3 signaling in endometriosis. Am J Reprod Immunol 2017; 78. [PMID: 28440564 DOI: 10.1111/aji.12690] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 03/21/2017] [Indexed: 12/12/2022] Open
Abstract
PROBLEM How does hypoxia-mediated downregulation of dual-specificity phosphatase-2 (DUSP2) promote the development of endometriotic lesions? METHOD OF STUDY The levels of IL-6 and DUSP2 were assessed in eutopic stromal cells with DUSP2 knockdown or hypoxia treatment. Bromodeoxyuridine (BrdU) incorporation was applied for evaluating cell proliferation. The protein levels of DUSP2, cleaved caspase-3, phosphorylated STAT3, and STAT3 were analyzed using immunoblot. RESULTS The genomewide analysis of cells with DUSP2 overexpression indicated IL-6 regulates multiple pathways related to inflammation, proliferation, and apoptosis. DUSP2 overexpression significantly suppressed IL-6 expression, while DUSP2 knockdown promoted IL-6 expression. The hypoxia-treated eutopic stromal cells expressed higher levels of IL-6, recapitulating the elevated levels of IL-6 in ectopic stromal cells. The treatment with IL-6 elicited the phosphorylation of STAT3, mimicking the elevated levels of phosphorylated STAT3 in the ectopic stromal cells. The IL-6-treated eutopic stromal cells showed more BrdU incorporation and less cleaved caspase-3, which can be reversed by STAT3 inhibitor. CONCLUSION Hypoxia-induced IL-6 production in endometriotic lesions is mediated via downregulation of DUSP2, which causes aberrant activation of STAT3 signaling pathway and helps the endometriotic cells survive under the ectopic environment.
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Affiliation(s)
- Kuei-Yang Hsiao
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ning Chang
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Cheng Kung University, Tainan, Taiwan
| | - Jia-Ling Tsai
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shih-Chieh Lin
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shaw-Jenq Tsai
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Meng-Hsing Wu
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Department of Obstetrics and Gynecology, College of Medicine and Hospital, National Cheng Kung University, Tainan, Taiwan
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19
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Liu Z, Zhang Y, Liu J, Yin F. Geniposide attenuates the level of Aβ 1-42 via enhancing leptin signaling in cellular and APP/PS1 transgenic mice. Arch Pharm Res 2017; 40:571-578. [PMID: 28160136 DOI: 10.1007/s12272-016-0875-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 12/17/2016] [Indexed: 01/29/2023]
Abstract
An large body of evidence indicates that leptin has protective role against Alzheimer's disease, where it reduces β-amyloid (Aβ) production in both cell culture and animal models. Our previous studies revealed that geniposide could attenuate the production of Aβ1-42 and antagonize the neurotoxicity of Aβ1-42 in neurons. However, the mechanism that underlies these effects remains to be clarified. To investigate whether leptin signaling is involved in regulating the production of Aβ1-42 by geniposide, we treated primary neurons with leptin antagonist (LA), and determined the influence of LA on the activities of leptin signaling molecules and the expressions of secretases associated with the production of Aβ1-42. The finding showed that, accompanied with the inhibition on the level of Aβ1-42 in primary neurons and APP/PS1 transgenic mice, geniposide induced the phosphorylation of JAK2 and STAT3, regulated the expression level of α- and β-secretase, and all of these could be prevented by the pre-incubation with LA. The results of this study suggest that geniposide may regulate the production of Aβ1-42 via leptin signaling.
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Affiliation(s)
- Zixuan Liu
- School of Pharmacy & Bioengineering, Chongqing University of Technology, Chongqing, 400054, China
| | - Yonglan Zhang
- School of Pharmacy & Bioengineering, Chongqing University of Technology, Chongqing, 400054, China
| | - Jianhui Liu
- School of Pharmacy & Bioengineering, Chongqing University of Technology, Chongqing, 400054, China.
| | - Fei Yin
- School of Pharmacy & Bioengineering, Chongqing University of Technology, Chongqing, 400054, China.
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20
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Prather GR, MacLean JA, Shi M, Boadu DK, Paquet M, Hayashi K. Niclosamide As a Potential Nonsteroidal Therapy for Endometriosis That Preserves Reproductive Function in an Experimental Mouse Model. Biol Reprod 2016; 95:76. [PMID: 27535961 PMCID: PMC5333938 DOI: 10.1095/biolreprod.116.140236] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 08/16/2016] [Indexed: 01/05/2023] Open
Abstract
Endometriosis causes severe chronic pelvic pain and infertility. Because the standard medication and surgical treatments of endometriosis show high recurrence of symptoms, it is necessary to improve current treatment options. In the initial study, we examined whether niclosamide can be a useful drug for endometriosis in a preclinical setting. Endometriotic implants were induced using an established mouse model involving transimplantation of mouse endometrial fragments to the peritoneal wall of recipient mice. When the recipient mice were treated with niclosamide for 3 weeks, niclosamide reduced the size of endometriotic implants with inhibition of cell proliferation, and inflammatory signaling including RELA (NFKB) and STAT3 activation, but did not alter expression of steroid hormone receptors. To identify genes whose expression is regulated by niclosamide in endometriotic implants, RNA-sequencing was performed, and several genes downregulated by niclosamide were related to inflammatory responses, WNT and MAPK signaling. In a second study designed to assess whether niclosamide affects reproductive function, the recipient mice started receiving niclosamide after the induction of endometriosis. Then, the recipient mice were mated with wild type males, and treatments continued until the pups were born. Niclosamide treated recipient mice became pregnant and produced normal size and number of pups. These results suggest that niclosamide could be an effective therapeutic drug, and acts as an inhibitor of inflammatory signaling without disrupting normal reproductive function.
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Affiliation(s)
- Genna R. Prather
- Department of Physiology, Southern Illinois University School of Medicine, Carbondale, Illinois
| | - James A. MacLean
- Department of Physiology, Southern Illinois University School of Medicine, Carbondale, Illinois
| | - Mingxin Shi
- Department of Physiology, Southern Illinois University School of Medicine, Carbondale, Illinois
| | - Daniel K. Boadu
- Department of Physiology, Southern Illinois University School of Medicine, Carbondale, Illinois
| | - Marilène Paquet
- Departement de Pathologie et de Microbiologie, Université de Montreal, St-Hyacinthe, Quebec, Canada
| | - Kanako Hayashi
- Department of Physiology, Southern Illinois University School of Medicine, Carbondale, Illinois
- Correspondence: Kanako Hayashi, Department of Physiology, Southern Illinois University School of Medicine, 1135 Lincoln Dr., Carbondale, IL 62901. E-mail:
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21
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Leptin promotes proliferation and metastasis of human gallbladder cancer through OB-Rb leptin receptor. Int J Oncol 2016; 49:197-206. [PMID: 27211817 DOI: 10.3892/ijo.2016.3530] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 02/24/2016] [Indexed: 11/05/2022] Open
Abstract
Emerging evidence has shown that leptin, an adipocyte-derived cytokine that is closely associated with obesity, play a significant role in carcinogenesis and tumorigenesis. However, its impact on gallbladder cancer (GBC) remains unclear. In this study, we firstly found that leptin and its functional receptor OB-Rb were significantly co-expressed in human GBC tissues and cell lines, the content of which were higher than those in normal human gallbladder tissues. Treatment with leptin promoted the proliferation, migration and invasion of GBC cells, which were attenuated by OB-Rb shRNA. Blocking in the G2/M period of cell cycle, increasing of MMP3 and MMP9, increasing of VEGF-C/D, activation of SOCS3/JAK2/p-STAT3 pathway was demonstrated after treatment with leptin. All of these positive responses were attenuated by OB-Rb receptor shRNA. Taken together, our findings suggest that leptin promoted the proliferation, migration and invasion of GBC cells by increasing OB-Rb expression through the SOCS3/JAK2/p-STAT3 signal pathway. Targeting the leptin/OB-Rb axis could be an attractive therapeutic strategy for treatment of GBC.
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22
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Xu HM, Deng HT, Liu CD, Chen YL, Zhang ZY. Phosphoproteomics Analysis of Endometrium in Women with or without Endometriosis. Chin Med J (Engl) 2016; 128:2617-24. [PMID: 26415800 PMCID: PMC4736851 DOI: 10.4103/0366-6999.166022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background: The molecular mechanisms underlying the endometriosis are still not completely understood. In order to test the hypothesis that the approaches in phosphoproteomics might contribute to the identification of key biomarkers to assess disease pathogenesis and drug targets, we carried out a phosphoproteomics analysis of human endometrium. Methods: A large-scale differential phosphoproteome analysis, using peptide enrichment of titanium dioxide purify and sequential elution from immobilized metal affinity chromatography with linear trap quadrupole-tandem mass spectrometry, was performed in endometrium tissues from 8 women with or without endometriosis. Results: The phosphorylation profiling of endometrium from endometriosis patients had been obtained, and found that identified 516 proteins were modified at phosphorylation level during endometriosis. Gene ontology annotation analysis showed that these proteins were enriched in cellular processes of binding and catalytic activity. Further pathway analysis showed that ribosome pathway and focal adhesion pathway were the top two pathways, which might be deregulated during the development of endometriosis. Conclusions: That large-scale phosphoproteome quantification has been successfully identified in endometrium tissues of women with or without endometriosis will provide new insights to understand the molecular mechanisms of the development of endometriosis.
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Affiliation(s)
| | | | | | | | - Zhen-Yu Zhang
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
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23
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Chen S, Xie W, Strong JA, Jiang J, Zhang JM. Sciatic endometriosis induces mechanical hypersensitivity, segmental nerve damage, and robust local inflammation in rats. Eur J Pain 2015; 20:1044-57. [PMID: 26688332 DOI: 10.1002/ejp.827] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2015] [Indexed: 12/15/2022]
Abstract
BACKGROUND Endometriosis is a common cause of pain including radicular pain. Ectopic endometrial tissue may directly affect peripheral nerves including the sciatic, which has not been modelled in animals. METHODS We developed a rat model for sciatic endometriosis by grafting a piece of autologous uterine tissue around the sciatic nerve. Control animals underwent a similar surgery but received a graft of pelvic fat tissue. RESULTS The uterine grafts survived and developed fluid-filled cysts; the adjacent nerve showed signs of swelling and damage. Mechanical and cold hypersensitivity and allodynia of the ipsilateral hindpaw developed gradually over the first 2 weeks after the surgery, peaked at 2-5 weeks, and was almost resolved by 7 weeks. Control animals showed only minor changes in these pain behaviours. Histological signs of inflammation in the uterine graft and in the adjacent nerve were observed at 3 weeks but were resolving by 7 weeks. In vivo fibre recording showed increased spontaneous activity, especially of C-fibres, in sciatic nerve proximal to the uterine graft. Several pro-inflammatory cytokines including interluekin-18, VEGF, fractalkine, and MIP-1α, were elevated in the uterine graft plus sciatic nerve samples, compared to samples from normal nerve or nerve plus fat graft. Growth associated protein 43 (GAP43), a marker of regenerating nerve fibres, was observed in the adjacent sciatic nerve as well as in the uterine graft. CONCLUSIONS This model shared many features with other rat models of endometriosis, but also had some unique features more closely related to neuropathic pain models. WHAT DOES THIS STUDY/REVIEW ADD Some especially painful forms of endometriosis are essentially neuropathic, because peripheral nerves are directly affected by nearby ectopic endometrial tissue. We modelled endometriosis by implanting autologous uterine tissue around rat sciatic nerve. We observed mechanical and cold pain behaviours along with signs of inflammation and nerve damage and increased pro-inflammatory cytokines at the implant site. Pain behaviours correlated with signs of nerve inflammation and damage rather than with cyst survival.
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Affiliation(s)
- S Chen
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Jinan, China.,Pain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - W Xie
- Pain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - J A Strong
- Pain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - J Jiang
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Jinan, China
| | - J-M Zhang
- Pain Research Center, Department of Anesthesiology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
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Santulli P, Marcellin L, Tosti C, Chouzenoux S, Cerles O, Borghese B, Batteux F, Chapron C. MAP kinases and the inflammatory signaling cascade as targets for the treatment of endometriosis? Expert Opin Ther Targets 2015; 19:1465-83. [PMID: 26389657 DOI: 10.1517/14728222.2015.1090974] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION The pathogenesis of endometriosis, a common benign disease, remains ill-defined, although it is clear that chronic inflammation plays a crucial role through mitogen-activated protein kinase (MAPK) signaling pathways. All current medical therapies for endometriosis are antigonadotropic, and therefore have a contraceptive effect. A concerted research effort is hence warranted with the aim of delivering novel therapeutics that reduces disease symptoms without blocking ovulation. AREAS COVERED The authors review the complex pathogenic mechanisms of chronic inflammation in endometriosis and their relationships with MAPK pathways. The authors conducted a literature search of descriptive and functional targeted validation of MAPK in the pathogenesis of endometriosis. The effects of MAPK inhibitors, which constitute potential agents for future treatments, are also described. EXPERT OPINION Preliminary studies have highlighted a crucial role for MAPK in driving endometriosis-related inflammation. MAPK inhibitors exhibit potent activity in terms of controlling growth of endometriosis lesions both in vitro and in animal models. As MAPK inhibitors are known to have a multitude of undesirable side effects, their use in humans has to be approached with great care. Indeed, use of these drugs would probably be limited to short exposures prior to surgery in cases involving the most severe disease phenotypes.
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Affiliation(s)
- Pietro Santulli
- a 1 Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique - Hôpitaux de Paris (AP- HP), Groupe Hospitalier Universitaire (GHU) Ouest, Centre Hospitalier Universitaire (CHU) Cochin, Department of Gynecology Obstetrics II and Reproductive Medicine , 75679 Paris, France +33 1 58 41 36 72 ; .,b 2 Université Paris Descartes, Sorbonne Paris Cité, Department "Development, Reproduction and Cancer," Institut Cochin , INSERM U1016, Equipe Pr Batteux, Paris, France
| | - Louis Marcellin
- a 1 Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique - Hôpitaux de Paris (AP- HP), Groupe Hospitalier Universitaire (GHU) Ouest, Centre Hospitalier Universitaire (CHU) Cochin, Department of Gynecology Obstetrics II and Reproductive Medicine , 75679 Paris, France +33 1 58 41 36 72 ; .,b 2 Université Paris Descartes, Sorbonne Paris Cité, Department "Development, Reproduction and Cancer," Institut Cochin , INSERM U1016, Equipe Pr Batteux, Paris, France
| | - Claudia Tosti
- c 3 University of Siena, Obstetrics and Gynecology, Department of Molecular and Developmental Medicine , Siena, Italy
| | - Sandrine Chouzenoux
- b 2 Université Paris Descartes, Sorbonne Paris Cité, Department "Development, Reproduction and Cancer," Institut Cochin , INSERM U1016, Equipe Pr Batteux, Paris, France
| | - Olivier Cerles
- b 2 Université Paris Descartes, Sorbonne Paris Cité, Department "Development, Reproduction and Cancer," Institut Cochin , INSERM U1016, Equipe Pr Batteux, Paris, France
| | - Bruno Borghese
- a 1 Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique - Hôpitaux de Paris (AP- HP), Groupe Hospitalier Universitaire (GHU) Ouest, Centre Hospitalier Universitaire (CHU) Cochin, Department of Gynecology Obstetrics II and Reproductive Medicine , 75679 Paris, France +33 1 58 41 36 72 ; .,b 2 Université Paris Descartes, Sorbonne Paris Cité, Department "Development, Reproduction and Cancer," Institut Cochin , INSERM U1016, Equipe Pr Batteux, Paris, France
| | - Frédéric Batteux
- b 2 Université Paris Descartes, Sorbonne Paris Cité, Department "Development, Reproduction and Cancer," Institut Cochin , INSERM U1016, Equipe Pr Batteux, Paris, France.,d 4 Hôpital Cochin, Department of Immunology , AP-HP, 75679 Paris cedex 14, France
| | - Charles Chapron
- a 1 Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine, Assistance Publique - Hôpitaux de Paris (AP- HP), Groupe Hospitalier Universitaire (GHU) Ouest, Centre Hospitalier Universitaire (CHU) Cochin, Department of Gynecology Obstetrics II and Reproductive Medicine , 75679 Paris, France +33 1 58 41 36 72 ; .,b 2 Université Paris Descartes, Sorbonne Paris Cité, Department "Development, Reproduction and Cancer," Institut Cochin , INSERM U1016, Equipe Pr Batteux, Paris, France
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Ahn JH, Choi YS, Choi JH. Leptin promotes human endometriotic cell migration and invasion by up-regulating MMP-2 through the JAK2/STAT3 signaling pathway. Mol Hum Reprod 2015; 21:792-802. [PMID: 26153131 DOI: 10.1093/molehr/gav039] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 06/30/2015] [Indexed: 12/23/2022] Open
Abstract
Despite evidence that leptin may play a role in the pathogenesis of endometriosis, the specific function of leptin in the migration and invasion of endometriotic cells is not well characterized. In this study, we investigated the effect of leptin on the migration, invasion and matrix metalloproteinase (MMP) expression levels of human endometriotic cells. We found that leptin stimulated the migration and invasion of endometriotic cells (11Z, 12Z and 22B) in a dose-dependent manner. Leptin receptor (ObR) siRNA significantly inhibited the migration and invasion induced by leptin in 11Z and 12Z cells. Leptin-induced migration and invasion were significantly attenuated by pretreatment with SB-3CT, a specific gelatinase (MMP-2 and MMP-9) inhibitor. In addition, leptin-induced increases in the mRNA and protein expression and enzyme activity of MMP-2 in 11Z and 12Z cells. Selectively inhibiting MMP-2 using siRNA and an inhibitor (GM6003), impaired the ability of leptin to stimulate the migration and invasion of endometriotic cells, suggesting that MMP-2 plays an essential role in leptin-induced migration and invasion. Janus Kinase 2/Signal Transducer and Activator of Transcription 3 (JAK2/STAT3) inhibitor (AG490) significantly inhibited the migration, invasion and MMP-2 expression induced by leptin in endometriotic cells. Furthermore, the Extracellular signal-Regulated Kinase inhibitor PD98059 neutralized the migration and invasion promoting effects of leptin. Taken together, these results suggest that leptin may contribute to the migration and invasion abilities of endometriotic cells via the up-regulation of MMP-2 through an ObR-dependent JAK2/STAT3 signaling pathway.
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Affiliation(s)
- Ji-Hye Ahn
- Department of Life & Nanopharmaceutical Science, Kyung Hee University, Seoul, South Korea Division of Molecular Biology, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Youn Seok Choi
- Department of Obstetrics and Gynecology, School of Medicine, Catholic University of Daegu, Daegu, South Korea
| | - Jung-Hye Choi
- Department of Life & Nanopharmaceutical Science, Kyung Hee University, Seoul, South Korea Division of Molecular Biology, College of Pharmacy, Kyung Hee University, Seoul, South Korea
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Galgani M, Insabato L, Calì G, Della Gatta AN, Mirra P, Papaccio F, Santopaolo M, Alviggi C, Mollo A, Strina I, Matarese G, Beguinot F, De Placido G, Ulianich L. Regulatory T cells, inflammation, and endoplasmic reticulum stress in women with defective endometrial receptivity. Fertil Steril 2015; 103:1579-86.e1. [PMID: 25935494 DOI: 10.1016/j.fertnstert.2015.03.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 02/23/2015] [Accepted: 03/17/2015] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To investigate immunologic parameters and endoplasmic reticulum (ER) stress associated with unexplained infertility. DESIGN Case-control study. SETTING Academic center. PATIENT(S) Women with no fertility problems (FS) (n = 13), women with recurrent miscarriage (RM) (n = 15) and women with repeated in vitro fertilization failure (RIF) (n = 15). INTERVENTION(S) Endometrial biopsy and collection of peripheral blood during the midsecretory phase of menstrual cycle. MAIN OUTCOME MEASURE(S) Leptin, resistin, soluble tumor necrosis factor receptor (sTNF-R), myeloperoxidase (MPO), soluble intercellular adhesion molecule 1 (sICAM-1), and interleukin 22 (IL-22) concentration in peripheral blood, endometrial CD3(+), CD4(+), CD5(+), CD8(+), and FoxP3(+) T lymphocytes, and endometrial expression of HSPA5, a specific marker of ER stress. RESULT(S) We found an increase of proinflammatory molecules such as resistin, leptin, and IL-22 in both RM and RIF patients; sTNF-R and MPO only in RIF patients when compared with the FS women. We also found in endometria of infertile women a statistically significant increase of CD3(+), CD4(+), CD8(+) in both RM and RIF patients and CD5(+) in RM patients when compared with FS women. This was paralleled by a statistically significant reduction of infiltrating FoxP3(+) regulatory T cells. Finally, endometrial HSPA5 expression levels were statistically significantly up-regulated in both RM and RIF patients. CONCLUSION(S) Women with RM and RIF showed an increase of circulating proinflammatory cytokines, altered endometrial T lymphocytes subsets, and signs of endometrial ER stress.
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Affiliation(s)
- Mario Galgani
- Istituto di Endocrinologia ed Oncologia Sperimentale "G. Salvatore" CNR, Naples, Italy
| | - Luigi Insabato
- Dipartimento di Scienze Biomediche Avanzate, Università "Federico II," Naples, Italy
| | - Gaetano Calì
- Istituto di Endocrinologia ed Oncologia Sperimentale "G. Salvatore" CNR, Naples, Italy
| | - Anna Nunzia Della Gatta
- Dipartimento di Neuroscienze e Scienze Riproduttive ed Odontostomatologiche, Università "Federico II," Naples, Italy
| | - Paola Mirra
- Dipartimento di Scienze Mediche Traslazionali and Istituto di Endocrinologia ed Oncologia Sperimentale "G. Salvatore" CNR, Università "Federico II," Naples, Italy
| | - Federica Papaccio
- Istituto di Endocrinologia ed Oncologia Sperimentale "G. Salvatore" CNR, Naples, Italy
| | - Marianna Santopaolo
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università "Federico II," Naples, Italy
| | - Carlo Alviggi
- Dipartimento di Neuroscienze e Scienze Riproduttive ed Odontostomatologiche, Università "Federico II," Naples, Italy
| | - Antonio Mollo
- Dipartimento di Neuroscienze e Scienze Riproduttive ed Odontostomatologiche, Università "Federico II," Naples, Italy
| | - Ida Strina
- Dipartimento di Neuroscienze e Scienze Riproduttive ed Odontostomatologiche, Università "Federico II," Naples, Italy
| | - Giuseppe Matarese
- Dipartimento di Medicina e Chirurgia, Università di Salerno, Baronissi Campus, Salerno, Italy; IRCCS Multimedica, Milan, Italy
| | - Francesco Beguinot
- Dipartimento di Scienze Mediche Traslazionali and Istituto di Endocrinologia ed Oncologia Sperimentale "G. Salvatore" CNR, Università "Federico II," Naples, Italy
| | - Giuseppe De Placido
- Dipartimento di Neuroscienze e Scienze Riproduttive ed Odontostomatologiche, Università "Federico II," Naples, Italy
| | - Luca Ulianich
- Dipartimento di Scienze Mediche Traslazionali and Istituto di Endocrinologia ed Oncologia Sperimentale "G. Salvatore" CNR, Università "Federico II," Naples, Italy.
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Kim BG, Yoo JY, Kim TH, Shin JH, Langenheim JF, Ferguson SD, Fazleabas AT, Young SL, Lessey BA, Jeong JW. Aberrant activation of signal transducer and activator of transcription-3 (STAT3) signaling in endometriosis. Hum Reprod 2015; 30:1069-78. [PMID: 25750101 DOI: 10.1093/humrep/dev050] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 02/12/2015] [Indexed: 12/25/2022] Open
Abstract
STUDY QUESTION Are STAT3 signaling molecules differentially expressed in endometriosis? SUMMARY ANSWER Levels of phospho-STAT3 and HIF1A, its downstream signaling molecule, are significantly higher in eutopic endometrium from women with endometriosis when compared with women without the disease. WHAT IS KNOWN ALREADY Endometriosis is an estrogen-dependent inflammatory condition. Interleukin 6 (IL-6) is an inflammatory survival cytokine known to induce prolonged activation of STAT3 via association with the IL-6 receptor. STUDY DESIGN, SIZE, DURATION Cross-sectional measurements of STAT3 and HIF1A protein levels in eutopic endometrium from women with endometriosis versus those without. PARTICIPANTS/MATERIALS, SETTING, METHODS Levels of phospho-STAT3 (pSTAT3) and HIF1A were examined in the endometrium of patients with and without endometriosis as well as in a non-human primate animal model using western blot and immunohistochemical analysis. MAIN RESULTS AND THE ROLE OF CHANCE Levels of pSTAT3 were significantly higher in the eutopic endometrium from women with endometriosis when compared with women without the disease in both the proliferative and secretory phases. HIF1A is known to be stabilized by STAT3 and IL-6. Our immunohistochemistry results show abundant HIF1A expression within the eutopic endometrial epithelial cells of women with endometriosis. Furthermore, pSTAT3 and HIF1A proteins are co-localized in endometriosis. This aberrant activation of pSTAT3 and HIF1A is confirmed by sequential analysis of eutopic endometrium using a baboon animal model of induced endometriosis. Lastly, we confirmed this IL-6 induction of both STAT3 phosphorylation and HIF1A mRNA expression in Ishikawa human endometrial adenocarcinoma cell line. LIMITATIONS, REASONS FOR CAUTION Ishikawa cancer cell line was used to study a benign disease. The peritoneal fluid contains various inflammatory cytokines in addition to IL-6 and so it is possible that other cytokines may affect the activity and expression of STAT3 signaling molecules. WIDER IMPLICATIONS OF THE FINDINGS Our results imply that aberrant activation of STAT3 signaling plays an important role in the pathogenesis of endometriosis. Our findings could progress in our understanding of the etiology and pathophysiology of endometriosis and potential therapeutic interventions by targeted pharmacological. STUDY FUNDING/COMPETING INTERESTS This work was supported by NIH R01 HD067721 (to S.L.Y and B.A.L) and NIH R01 HD057873 and American Cancer Society Research Grant RSG-12-084-01-TBG (to J.-W.J.). There are no conflicts of interest.
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Affiliation(s)
- Byung Gak Kim
- Obstetrics, Gynecology & Reproductive Biology, Michigan State University, Grand Rapids, MI 49503, USA
| | - Jung-Yoon Yoo
- Obstetrics, Gynecology & Reproductive Biology, Michigan State University, Grand Rapids, MI 49503, USA
| | - Tae Hoon Kim
- Obstetrics, Gynecology & Reproductive Biology, Michigan State University, Grand Rapids, MI 49503, USA
| | - Jung-Ho Shin
- Division of Reproductive Endocrinology, Department of Obstetrics & Gynecology, Guro Hospital, Korea University Medical Center, Seoul 152-703, South Korea
| | - John F Langenheim
- Obstetrics and Gynecology, University Medical Group, Greenville Health System, Greenville, SC 29605, USA
| | - Susan D Ferguson
- Obstetrics, Gynecology & Reproductive Biology, Michigan State University, Grand Rapids, MI 49503, USA
| | - Asgerally T Fazleabas
- Obstetrics, Gynecology & Reproductive Biology, Michigan State University, Grand Rapids, MI 49503, USA Department of Women's Health, Spectrum Health System, Grand Rapids, MI 49341, USA
| | - Steven L Young
- Obstetrics and Gynecology, University of North Carolina, Chapel Hill, NC 27514, USA
| | - Bruce A Lessey
- Obstetrics and Gynecology, University Medical Group, Greenville Health System, Greenville, SC 29605, USA
| | - Jae-Wook Jeong
- Obstetrics, Gynecology & Reproductive Biology, Michigan State University, Grand Rapids, MI 49503, USA Department of Women's Health, Spectrum Health System, Grand Rapids, MI 49341, USA
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Small RNA molecules in endometriosis: pathogenesis and therapeutic aspects. Eur J Obstet Gynecol Reprod Biol 2014; 183:83-8. [DOI: 10.1016/j.ejogrb.2014.10.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 10/06/2014] [Accepted: 10/22/2014] [Indexed: 12/28/2022]
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Lin XH, Liu ME, Xu HY, Chen XJ, Wang H, Tian S, Sheng JZ, Huang HF. Leptin down-regulates γ-ENaC expression: a novel mechanism involved in low endometrial receptivity. Fertil Steril 2014; 103:228-35.e3. [PMID: 25450293 DOI: 10.1016/j.fertnstert.2014.10.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 09/11/2014] [Accepted: 10/01/2014] [Indexed: 01/03/2023]
Abstract
OBJECTIVE To examine epithelial Na(+) channel (ENaC) expression in endometrium of overweight/obese women with polycystic ovary syndrome (PCOS) during the window of implantation, and to explore the mechanism linking leptin-mediated reduction of γ-ENaC to low endometrial receptivity. DESIGN Controlled, prospective, clinical, experimental study. SETTING University-based infertility center. PATIENT(S) Blood and endometrium samples were collected from 12 control women and 12 overweight/obese PCOS patients. Pregnancy outcomes were obtained from 245 women with male-factor infertility (533 cycles) and 57 infertile women with PCOS (120 cycles) who underwent intrauterine insemination. INTERVENTION(S) Human endometrial biopsies. MAIN OUTCOME MEASURE(S) Expression of ENaC mRNA and protein in endometrium. RESULT(S) The expression of γ-ENaC decreased in the secretory phase endometrium of PCOS patients who showed increased serum leptin levels. In cultured endometrial cells (Ishikawa cells), leptin dose-dependently down-regulated the expression of γ-ENaC and reduced the JAr spheroid attachment rate, which could be blocked by knockdown of STAT3, a signal in the pathway of leptin receptor activation. The overweight/obese PCOS patients with increased serum leptin levels showed a significantly increased biochemical pregnancy rate, suggesting that high leptin might attenuate endometrial receptivity and increase very early pregnancy loss. CONCLUSION(S) High serum leptin may reduce endometrial receptivity by activating the STAT3 signal pathway and down-regulating γ-ENaC expression in the endometrium. These results provide valuable new insights into the molecular mechanisms linking abnormal ENaC gene expression to early pregnancy loss in overweight/obese PCOS patients.
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Affiliation(s)
- Xian-Hua Lin
- Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, Hangzhou, People's Republic of China; Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University, Hangzhou, People's Republic of China
| | - Miao-E Liu
- Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, Hangzhou, People's Republic of China; Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University, Hangzhou, People's Republic of China
| | - Hai-Yan Xu
- Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, Hangzhou, People's Republic of China; Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University, Hangzhou, People's Republic of China
| | - Xue-Jun Chen
- Medical Reproductive Center, Enze Maternity Hospital, Taizhou, Zhejiang, People's Republic of China
| | - Hui Wang
- Medical Reproductive Center, Hangzhou First People's Hospital, Hangzhou, People's Republic of China
| | - Shen Tian
- Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, Hangzhou, People's Republic of China; Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University, Hangzhou, People's Republic of China
| | - Jian-Zhong Sheng
- Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, Hangzhou, People's Republic of China; Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou, People's Republic of China
| | - He-Feng Huang
- Key Laboratory of Reproductive Genetics, Ministry of Education, Zhejiang University, Hangzhou, People's Republic of China; International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China; Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University, Hangzhou, People's Republic of China.
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Ozhan E, Kokcu A, Yanik K, Gunaydin M. Investigation of diagnostic potentials of nine different biomarkers in endometriosis. Eur J Obstet Gynecol Reprod Biol 2014; 178:128-33. [DOI: 10.1016/j.ejogrb.2014.04.037] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 04/21/2014] [Accepted: 04/22/2014] [Indexed: 11/30/2022]
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Zendron C, Gonçalves HF, Cavalcante FS, Pereira TRD, Evangelista A, Ramos CF, Oliveira MAP. Increased expression of the leptin receptor in human ovaries affected by endometrioma and detection of high levels of leptin in the ovarian endometriomal fluid. J Ovarian Res 2014; 7:2. [PMID: 24401660 PMCID: PMC3896967 DOI: 10.1186/1757-2215-7-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 01/06/2014] [Indexed: 11/10/2022] Open
Abstract
Background This study was designed to investigate leptin levels in the fluid in ovarian endometriomas (OEs) and to compare the expression of leptin and its receptors (OBR) in ovarian tissue affected by endometrioma in infertile women to its expression in the normal ovarian tissue of fertile controls without endometriosis. Methods In this case–control observational study, ovarian tissue, blood samples and peritoneal fluid were obtained from 20 women (10 fertile controls without endometriosis or any ovarian disease, who were undergoing tubal ligation surgery, and 10 infertile women with severe endometriosis and OE). The ovarian endometriomal fluid (EF) was aspirated, and peritoneal-implant (PI) biopsies were performed. The tissues removed during the surgeries were immediately frozen in liquid nitrogen to determine expression levels by western blot and leptin levels by ELISA. Results OBR was expressed at higher levels in the ovarian tissue affected by endometrioma than in the normal ovarian tissue (control = 0.38 ± 0.05, study = 0.60 ± 0.09, p = 0.03), but there was no significant difference in leptin levels between these groups (control = 0.57 ± 0.1, study = 0.35 ± 0.1, p = 0.18). Positive and significant correlations were observed between leptin and OBR in the OE (r = 0.85, p = 0.004) and in the PI (r = 0.87, p = 0.001). ELISA results demonstrate a greater leptin concentration within the EF compared with the serum and the PF (serum = 14.25 ± 1.63, PF = 5.98 ± 2.0, EF = 73.8 ± 16.2, p = 0.0001), but there was no correlation between these variables. A positive, significant and strong correlation was observed between PF leptin levels and the expression of leptin and OBR in PI (leptin: r = 0.78, p = 0.007/OBR: r = 0.68, p = 0.04) and between the EF leptin levels and the expression of leptin and OBR in the OE (leptin: r = 0.88, p = 0.008/OBR: r = 0.89, p = 0.005). Conclusions These data suggest that leptin may play an important role in the physiopathology of OE through a modulatory interaction with its active receptor.
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Affiliation(s)
- Carolina Zendron
- Department of Gynecology, Rio de Janeiro State University, 20551-030, Rio de Janeiro Brazil.
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Overexpression of lysine-specific demethylase 1 in ovarian endometriomas and its inhibition reduces cellular proliferation, cell cycle progression, and invasiveness. Fertil Steril 2014; 101:740-9. [PMID: 24388204 DOI: 10.1016/j.fertnstert.2013.11.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 10/28/2013] [Accepted: 11/22/2013] [Indexed: 01/13/2023]
Abstract
OBJECTIVE To investigate whether lysine-specific demethylase 1 (LSD1) is aberrantly expressed in endometriomas and whether treatment with tranylcypromine, an LSD1 inhibitor, has any effect on cell viability, cell cycle, and invasiveness. DESIGN Laboratory study using human tissues. SETTING Academic hospital. PATIENT(S) Forty-two ectopic endometrial tissue samples, their homologue eutopic endometrial tissue samples, and 70 control endometrial tissue samples. INTERVENTION(S) Immunohistochemistry analysis of LSD1 of all human tissue samples, and Western blot analysis, quantitative real-time reverse-transcription polymerase chain reaction analysis, cell viability assay, cell cycle analysis, and invasion assay of eutopic and ectopic endometriotic stromal cells and normal endometrial stromal cells. MAIN OUTCOME MEASURE(S) Immunostaining levels of LSD1, gene and protein expression levels, cell viability, cell cycles, and invasiveness. RESULT(S) The expression of the LSD1 gene and protein in endometriosis was elevated. Treatment of endometriotic stromal cells with tranylcypromine statistically significantly reduced the cellular proliferation, cell cycle progression, and invasiveness. CONCLUSION(S) Because DNA and histones are intimately intertwined and work in concert in transcription regulation, conceivably histone demethylation activity of LSD1 could be wide ranging. The inhibition of LSD1 activity by tranylcypromine and the resultant inhibition of proliferation, cell cycle progression, and invasiveness suggest that LSD1 may be a candidate therapeutic target for endometriosis.
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Alvarez P, Bogen O, Chen X, Giudice LC, Levine JD. Ectopic endometrium-derived leptin produces estrogen-dependent chronic pain in a rat model of endometriosis. Neuroscience 2013; 258:111-20. [PMID: 24239717 DOI: 10.1016/j.neuroscience.2013.11.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 10/30/2013] [Accepted: 11/05/2013] [Indexed: 01/05/2023]
Abstract
Endometriosis pain is a very common and extremely disabling condition whose mechanism is still poorly understood. While increased levels of leptin have been reported in patients with endometriosis, their contribution to endometriosis pain has not been explored. Using a rodent model of endometriosis we provide evidence for an estrogen-dependent contribution of leptin in endometriosis-induced pain. Rats implanted with autologous uterine tissue onto the gastrocnemius muscle developed endometriosis-like lesions and local chronic pain. Compared to eutopic uterine tissue, leptin mRNA and protein were up-regulated in the endometriosis-like lesions. Intramuscular injection of recombinant leptin in naive rats produced dose-dependent local mechanical hyperalgesia and nociceptor sensitization to mechanical stimulation. Ovariectomy attenuated the mechanical hyperalgesia induced by recombinant leptin, in rats treated with vehicle compared to those treated with 17β-estradiol replacement, at 1 and 24 h after leptin injection. Finally, intralesional injections of a pegylated leptin receptor (Ob-R) antagonist or of an inhibitor of Janus kinase2, which transduces the Ob-R signal, markedly attenuated pain in the endometriosis model. Taken together these data support the hypothesis that leptin, generated in ectopic endometrial lesions produces mechanical hyperalgesia by acting on nociceptors innervating the lesion. This sensitivity to leptin is dependent on estrogen levels. Thus, interventions targeting leptin signaling, especially in combination with interventions that lower estrogen levels, might be useful for the treatment of endometriosis pain.
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Affiliation(s)
- P Alvarez
- Department of Oral and Maxillofacial Surgery, University of California San Francisco, San Francisco, CA 94143, USA; Division of Neuroscience, University of California San Francisco, San Francisco, CA 94143, USA
| | - O Bogen
- Department of Oral and Maxillofacial Surgery, University of California San Francisco, San Francisco, CA 94143, USA; Division of Neuroscience, University of California San Francisco, San Francisco, CA 94143, USA
| | - X Chen
- Department of Oral and Maxillofacial Surgery, University of California San Francisco, San Francisco, CA 94143, USA; Division of Neuroscience, University of California San Francisco, San Francisco, CA 94143, USA
| | - L C Giudice
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Francisco, San Francisco, CA 94143, USA; Center for Reproductive Sciences, University of California San Francisco, San Francisco, CA 94143, USA
| | - J D Levine
- Department of Oral and Maxillofacial Surgery, University of California San Francisco, San Francisco, CA 94143, USA; Division of Neuroscience, University of California San Francisco, San Francisco, CA 94143, USA; Department of Medicine, University of California San Francisco, San Francisco, CA 94143, USA.
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Choi YS, Oh HK, Choi JH. Expression of adiponectin, leptin, and their receptors in ovarian endometrioma. Fertil Steril 2013; 100:135-41.e1-2. [PMID: 23579009 DOI: 10.1016/j.fertnstert.2013.03.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 03/07/2013] [Accepted: 03/07/2013] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To evaluate the expression of leptin, leptin receptor (ObR), adiponectin, and adiponectin receptor (AdipoR) in ovarian endometriomas compared with normal endometrium, and to analyze relationships among adipokines and their receptors. DESIGN Experimental study. SETTING A clinic for the treatment of endometriosis and basic research laboratories. PATIENT(S) Forty-four women with endometriosis and 42 age-matched women with no laparoscopic evidence of endometriosis as control subjects. INTERVENTION(S) Endometrial tissue samples were obtained during laparoscopic surgery. MAIN OUTCOME MEASURE(S) Immunohistochemical staining for leptin, ObR, adiponectin, and AdipoR was performed with the use of tissue microarray. Clinical characteristics were reviewed from the patient's medical records. The effect of leptin on the expression of adiponectin was evaluated in endometriotic cell line using real-time reverse-transcription polymerase chain reaction. RESULT(S) Positive expression rates of leptin and ObR were significantly higher in ovarian endometrioma compared with normal endometrium, but those of adiponectin and AdipoR were similar (ovarian endometrioma vs. normal endometrium, respectively: leptin 100% vs. 59.5%; ObR 72.7% vs. 33.3%; adiponectin 31.8% vs. 42.9%; AdipoR 88.6% vs. 73.8%). Expression of adipokines and their receptors did not show any correlation with disease stage. A positive correlation was found between expression of ObR and adiponectin (correlation coefficient 0.488; P=.001). Leptin treatment in endometriotic cells induced mRNA expression of adiponectin. CONCLUSION(S) These data suggest that leptin and its receptor are induced in ovarian endometriomas, and that the leptin/ObR system regulates adiponectin gene expression in endometriotic cells.
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Affiliation(s)
- Youn Seok Choi
- Department of Obstetrics and Gynecology, School of Medicine, Catholic University of Daegu, Daegu, South Korea
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Gene expression of leptin and long leptin receptor isoform in endometriosis: a case-control study. Obstet Gynecol Int 2013; 2013:879618. [PMID: 23634146 PMCID: PMC3619696 DOI: 10.1155/2013/879618] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2012] [Revised: 02/12/2013] [Accepted: 02/14/2013] [Indexed: 12/20/2022] Open
Abstract
In this study, leptin/BMI ratio in serum and peritoneal fluid and gene expression of leptin and long form leptin receptor (OB-RL) were assessed in eutopic and ectopic endometria of women with endometriosis and controls. Increased serum leptin/BMI ratio was found in endometriosis patients. Leptin and OB-RL gene expression was significantly higher in ectopic versus eutopic endometrium of patients and controls. A positive, significant correlation was observed between leptin and OB-RL transcripts in ectopic endometria and also in eutopic endometria in endometriosis and control groups. A negative and significant correlation was found between OB-RL mRNA expression and peritoneal fluid leptin/BMI ratio only in endometriosis. These data suggest that, through a modulatory interaction with its active receptor, leptin might play a role in the development of endometrial implants.
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