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Sirotkin AV, Fabová Z, Loncová B, Bauerová M, Harrath AH. The adipokines progranulin and omentin can directly regulate feline ovarian granulosa cell functions. Res Vet Sci 2024; 175:105321. [PMID: 38843689 DOI: 10.1016/j.rvsc.2024.105321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 05/17/2024] [Accepted: 05/31/2024] [Indexed: 06/17/2024]
Abstract
The aim of the present study was to determine the effects of the adipokines progranulin and omentin on the basic functions of feline ovarian cells. For this purpose, we investigated the effects of the addition of progranulin and omentin (0, 0.1, 1, or 10 ng/ml) on the proliferation (accumulation of PCNA and cyclin B1), apoptosis (accumulation of Bax and caspase 3) and progesterone release of cultured feline ovarian granulosa cells by quantitative immunocytochemistry and enzyme-linked immunosorbent assays (ELISAs). Both progranulin and omentin increased cell proliferation and decreased apoptosis. Both progranulin and omentin promoted progesterone release. The present findings demonstrate that the adipokines progranulin and omentin can directly regulate basic feline ovarian cell functions.
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Affiliation(s)
- Alexander V Sirotkin
- Faculty of Natural Sciences and Informatics, Constantine the Philosopher University in Nitra, Nitra, Slovakia.
| | - Zuzana Fabová
- Faculty of Natural Sciences and Informatics, Constantine the Philosopher University in Nitra, Nitra, Slovakia
| | - Barbora Loncová
- Faculty of Natural Sciences and Informatics, Constantine the Philosopher University in Nitra, Nitra, Slovakia
| | - Maria Bauerová
- Faculty of Natural Sciences and Informatics, Constantine the Philosopher University in Nitra, Nitra, Slovakia
| | - Abdel Halim Harrath
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
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Song X, Xu W, Li Z, Zhang X, Liu C, Han K, Chen L, Shi Y, Xu C, Han D, Luo R, Cao Y, Li Q, Yang H, Lu Q, Qin J, Wang X, Hu C, Li X. Peripheral 5-HT Mediates Gonadotropin-Inhibitory Hormone-Induced Feeding Behavior and Energy Metabolism Disorder in Chickens via the 5-HT2C Receptor. Neuroendocrinology 2024; 114:749-774. [PMID: 38718758 DOI: 10.1159/000539238] [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: 10/23/2023] [Accepted: 04/11/2024] [Indexed: 06/21/2024]
Abstract
INTRODUCTION Since the discovery of gonadotropin-inhibitory hormone (GnIH), it has been found to play a critical role in reproduction in vertebrates. Recently, a regulatory role of GnIH in appetite and energy metabolism has emerged, although its precise physiological mechanisms remain unknown. METHODS Thus, the present study evaluated the effects of a single or long-term intraperitoneal GnIH treatment on the food intake, weight, and glucolipid metabolism of chickens, as well as investigating the possible neuroendocrinology factors and mechanisms involved in GnIH-induced obesity and glucolipid metabolism disorder. RESULTS Our results show that the intraperitoneal administration of GnIH to chickens resulted in a marked body mass increase, hyperlipidemia, hyperglycemia, and glucose intolerance. Subsequently, the results of metabolomics studies and the pharmacological inhibition of the 5-HT2C receptor revealed that blocking the 5-HT2C receptor reinforced the effects of GnIH on food intake, body weight, and blood glucose and lipid levels, resulting in even worse cases of GnIH-induced hyperglycemia, hyperlipidemia, and hepatic lipid deposition. This suggests that, via the 5-HT2C receptor, peripheral 5-HT may act as a negative feedback regulator to interplay with GnIH and jointly control energy balance homeostasis in chickens. DISCUSSION Our present study provides evidence of cross-talk between GnIH and 5-HT in food intake and energy metabolism at the in vivo pharmacological level, and it proposes a molecular basis for these interactions, suggesting that functional interactions between GnIH and 5-HT may open new avenues for understanding the mechanism of the neuroendocrine network involved in appetite and energy metabolism, as well as providing a new therapeutic strategy to prevent obesity, diabetes, and metabolic disorders.
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Affiliation(s)
- Xingxing Song
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Wenhao Xu
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Zixin Li
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Xin Zhang
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Chengcheng Liu
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Kaiou Han
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Lei Chen
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Yan Shi
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Changlin Xu
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Dongyang Han
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Rongrong Luo
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Yajie Cao
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Qingwen Li
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Huihua Yang
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Qiucheng Lu
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Jin Qin
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Xiaoye Wang
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Chuanhuo Hu
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Xun Li
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
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Xiong X, Hu Y, Pan B, Zhu Y, Fei X, Yang Q, Xie Y, Xiong Y, Lan D, Fu W, Li J. RFRP-3 Influences Apoptosis and Steroidogenesis of Yak Cumulus Cells and Compromises Oocyte Meiotic Maturation and Subsequent Developmental Competence. Int J Mol Sci 2023; 24:ijms24087000. [PMID: 37108163 PMCID: PMC10138887 DOI: 10.3390/ijms24087000] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/03/2023] [Accepted: 04/09/2023] [Indexed: 04/29/2023] Open
Abstract
RF amide-related peptide 3 (RFRP-3), a mammalian ortholog of gonadotropin-inhibitory hormone (GnIH), is identified to be a novel inhibitory endogenous neurohormonal peptide that regulates mammalian reproduction by binding with specific G protein-coupled receptors (GPRs) in various species. Herein, our objectives were to explore the biological functions of exogenous RFRP-3 on the apoptosis and steroidogenesis of yak cumulus cells (CCs) and the developmental potential of yak oocytes. The spatiotemporal expression pattern and localization of GnIH/RFRP-3 and its receptor GPR147 were determined in follicles and CCs. The effects of RFRP-3 on the proliferation and apoptosis of yak CCs were initially estimated by EdU assay and TUNEL staining. We confirmed that high-dose (10-6 mol/L) RFRP-3 suppressed viability and increased the apoptotic rates, implying that RFRP-3 could repress proliferation and induce apoptosis. Subsequently, the concentrations of E2 and P4 were significantly lower with 10-6 mol/L RFRP-3 treatment than that of the control counterparts, which indicated that the steroidogenesis of CCs was impaired after RFRP-3 treatment. Compared with the control group, 10-6 mol/L RFRP-3 treatment decreased the maturation of yak oocytes efficiently and subsequent developmental potential. We sought to explore the potential mechanism of RFRP-3-induced apoptosis and steroidogenesis, so we observed the levels of apoptotic regulatory factors and hormone synthesis-related factors in yak CCs after RFRP-3 treatment. Our results indicated that RFRP-3 dose-dependently elevated the expression of apoptosis markers (Caspase and Bax), whereas the expression levels of steroidogenesis-related factors (LHR, StAR, 3β-HSD) were downregulated in a dose-dependent manner. However, all these effects were moderated by cotreatment with inhibitory RF9 of GPR147. These results demonstrated that RFRP-3 adjusted the expression of apoptotic and steroidogenic regulatory factors to induce apoptosis of CCs, probably through binding with its receptor GPR147, as well as compromised oocyte maturation and developmental potential. This research revealed the expression profiles of GnIH/RFRP-3 and GPR147 in yak CCs and supported a conserved inhibitory action on oocyte developmental competence.
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Affiliation(s)
- Xianrong Xiong
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Exploitation of Ministry of Education, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
- Key Laboratory for Animal Science of National Ethnic Affairs Commission, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
| | - Yulei Hu
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Exploitation of Ministry of Education, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
| | - Bangting Pan
- Key Laboratory for Animal Science of National Ethnic Affairs Commission, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
| | - Yanjin Zhu
- Key Laboratory for Animal Science of National Ethnic Affairs Commission, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
| | - Xixi Fei
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Exploitation of Ministry of Education, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
| | - Qinhui Yang
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Exploitation of Ministry of Education, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
| | - Yumian Xie
- Key Laboratory for Animal Science of National Ethnic Affairs Commission, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
| | - Yan Xiong
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Exploitation of Ministry of Education, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
- Key Laboratory for Animal Science of National Ethnic Affairs Commission, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
| | - Daoliang Lan
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Exploitation of Ministry of Education, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
| | - Wei Fu
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Exploitation of Ministry of Education, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
| | - Jian Li
- Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Exploitation of Ministry of Education, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
- Key Laboratory for Animal Science of National Ethnic Affairs Commission, College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China
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Chen L, Zhang X, Song X, Han D, Han K, Xu W, Luo R, Cao Y, Shi Y, Liu C, Xu C, Li Z, Li Y, Li X. Peripheral Gonadotropin-Inhibitory Hormone (GnIH) Acting as a Novel Modulator Involved in Hyperphagia-Induced Obesity and Associated Disorders of Metabolism in an In Vivo Female Piglet Model. Int J Mol Sci 2022; 23:ijms232213956. [PMID: 36430435 PMCID: PMC9692342 DOI: 10.3390/ijms232213956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/08/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
Apart from the well-established role of the gonadotropin-inhibitory hormone (GnIH) in the regulation of the reproductive functions, much less is known about the peripheral role of the GnIH and its receptor in the metabolic processes. On account of pig being an excellent model for studies of food intake and obesity in humans, we investigated the peripheral effects of the GnIH on food intake and energy homeostasis and revealed the underlying mechanism(s) in female piglets in vivo. Compared to the vehicle-treated group, intraperitoneally injected GnIH significantly increased the food intake and altered the meal microstructure both in the fasting and ad libitum female piglet. GnIH-triggered hyperphagia induced female piglet obesity and altered islet hormone secretion in the pancreas, accompanied with dyslipidemia and hyperglycemia. Interestingly, GnIH decreased the glucose transport capacity and glycogen synthesis, whereas it increased the gluconeogenesis in the liver, while it also induced an insulin resistance in white adipose tissue (WAT) via inhibiting the activity of AKT-GSK3-β signaling. In terms of the lipid metabolism, GnIH reduced the oxidation of fatty acids, whereas the elevated fat synthesis ability in the liver and WAT was developed though the inhibited AMPK phosphorylation. Our findings demonstrate that peripheral GnIH could trigger hyperphagia-induced obesity and an associated glycolipid metabolism disorder in female piglets, suggesting that GnIH may act as a potential therapeutic agent for metabolic syndrome, obesity and diabetes.
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Affiliation(s)
- Lei Chen
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Xin Zhang
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Xingxing Song
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Dongyang Han
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Kaiou Han
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Wenhao Xu
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Rongrong Luo
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Yajie Cao
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Yan Shi
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Chengcheng Liu
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Changlin Xu
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Zixin Li
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Yinan Li
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
| | - Xun Li
- College of Animal Science and Technology, Guangxi University, Nanning 530004, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China
- Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China
- Correspondence: ; Tel.: +86-(07)-7132-35635
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Zhang X, Li M, Huang M, Peng H, Song X, Chen L, Hu W, Xu W, Luo R, Han D, Shi Y, Cao Y, Li X, Hu C. Effect of RFRP-3, the mammalian ortholog of GnIH, on apoptosis and autophagy in porcine ovarian granulosa cells via the p38MAPK pathway. Theriogenology 2021; 180:137-145. [PMID: 34973645 DOI: 10.1016/j.theriogenology.2021.12.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 12/03/2021] [Accepted: 12/18/2021] [Indexed: 11/17/2022]
Abstract
RFamide-related peptide-3 (RFRP-3) has been proposed as a key inhibitory regulator of mammalian reproduction. Our previous studies demonstrated that RFRP-3 mediated apoptosis and autophagy of the epididymis in rats and inhibited porcine granulosa cell (GC) proliferation. However, the molecular mechanisms of the RFRP-3 effect on porcine GC apoptosis and autophagy have not been studied before. Herein, we first investigated the role of RFRP-3 in apoptosis and autophagy in cultured porcine GCs in vitro. Our results showed that different doses of RFRP-3 dose-dependently elevated the expression of autophagy markers at both the mRNA and protein levels, whereas the expression of apoptosis markers exhibited a bidirectional, dose-dependent effect. Because the p38MAPK signaling pathway plays essential roles in apoptosis and autophagy, we subsequently evaluated the effect of RFRP-3 on p38MAPK activation. The results showed that 10-6 M RFRP-3 treatment not only significantly decreased p38MAPK phosphorylation but also inhibited the p38MAPK activator U-46619 to promote p38MAPK activation in porcine GCs. Finally, we applied U-46619 to investigate the role of the p38MAPK signaling pathway in apoptosis and autophagy in RFRP-3-treated porcine GCs. The results showed that all doses of RFRP-3 significantly inhibited the U-46619-induced increase in apoptosis in a dose-dependent manner. However, except for the U-46619-induced Beclin-1 expression increase, which was significantly suppressed in high-dose RFRP-3-treated porcine GCs, other doses of RFRP-3 treatment strengthened the U-46619-induced increase in other autophagy markers. In summary, our data demonstrate a critical role for the p38MAPK signaling pathway in the porcine GC cellular response to RFRP-3 by controlling the balance between apoptosis and autophagy.
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Affiliation(s)
- Xin Zhang
- College of Animal Science and Technology, Guangxi University, Nanning Guangxi, 530004, China
| | - Ming Li
- Chengdu Research Base of Giant Panda Breeding, China
| | | | - Hao Peng
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, China
| | - Xingxing Song
- College of Animal Science and Technology, Guangxi University, Nanning Guangxi, 530004, China
| | - Lei Chen
- College of Animal Science and Technology, Guangxi University, Nanning Guangxi, 530004, China
| | - Wen Hu
- College of Animal Science and Technology, Guangxi University, Nanning Guangxi, 530004, China
| | - Wenhao Xu
- College of Animal Science and Technology, Guangxi University, Nanning Guangxi, 530004, China
| | - Rongrong Luo
- College of Animal Science and Technology, Guangxi University, Nanning Guangxi, 530004, China
| | - Dongyang Han
- College of Animal Science and Technology, Guangxi University, Nanning Guangxi, 530004, China
| | - Yan Shi
- College of Animal Science and Technology, Guangxi University, Nanning Guangxi, 530004, China
| | - Yajie Cao
- College of Animal Science and Technology, Guangxi University, Nanning Guangxi, 530004, China
| | - Xun Li
- College of Animal Science and Technology, Guangxi University, Nanning Guangxi, 530004, China.
| | - Chuanhuo Hu
- College of Animal Science and Technology, Guangxi University, Nanning Guangxi, 530004, China.
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6
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Wang Z, Xu J, Wang Y, Xiang L, He X. Total saponins from Tupistra chinensis baker inhibits growth of human gastric cancer cells in vitro and in vivo. JOURNAL OF ETHNOPHARMACOLOGY 2021; 278:114323. [PMID: 34116191 DOI: 10.1016/j.jep.2021.114323] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 06/01/2021] [Accepted: 06/05/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Tupistra chinensis Baker (syn. Rohdea chinensis), an antitumor folk herb mainly distributed in China, its rhizome has been historically used to treat gastric cancer. Studies showed that the steroidal saponins were the main bioactive components in the rhizome of T. chinensis. Our previous studies have confirmed that the steroidal saponins have a variety of anti-tumor activities. However, the underlying anti-tumor mechanism of the total steroidal saponins of T. chinensis (TCS) remains to be revealed. AIM OF THE STUDY In the present study, we studied the potential anti-proliferative activity and anti-tumor mechanism of TCS on gastric cancer in vitro and in vivo. METHODS In vitro, 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay was used to detect the proliferation ability of TCS on SGC-7901 cells and AGS cells. Flow cytometry were performed to analyze cell apoptosis, cell cycle, mitochondrial membrane potential and reactive oxygen species expression level. Western blotting was performed to validate the expression of proteins in related pathways. In vivo, a xenograft model was established by injecting SGC-7901 cells into nude mice. RESULTS In vitro, TCS inhibited the proliferation of gastric cancer cells. TCS effectively induced apoptosis by PI3K/Akt/mTOR signaling pathway in SGC-7901 cells, and promoted apoptosis via p53-mediated pathway in AGS cells. TCS also exhibited inhibitory activity in blocking the migration of gastric cancer cells. In vivo, TCS significantly inhibited the growth of xenograft tumor. CONCLUSION These results indicated that TCS exhibited significant anti-gastric cancer effects in vitro and in vivo.
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Affiliation(s)
- Zhe Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Jingwen Xu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China; Guangdong Engineering Research Center for Lead Compounds & Drug Discovery, Guangzhou, 510006, China.
| | - Yihai Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China; Guangdong Engineering Research Center for Lead Compounds & Drug Discovery, Guangzhou, 510006, China.
| | - Limin Xiang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China; Guangdong Engineering Research Center for Lead Compounds & Drug Discovery, Guangzhou, 510006, China.
| | - Xiangjiu He
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China; Guangdong Engineering Research Center for Lead Compounds & Drug Discovery, Guangzhou, 510006, China.
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Casillas F, Betancourt M, Juárez-Rojas L, Ducolomb Y, López A, Ávila-Quintero A, Zamora J, Ommati MM, Retana-Márquez S. Chronic Stress Detrimentally Affects In Vivo Maturation in Rat Oocytes and Oocyte Viability at All Phases of the Estrous Cycle. Animals (Basel) 2021; 11:ani11092478. [PMID: 34573444 PMCID: PMC8465826 DOI: 10.3390/ani11092478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/19/2021] [Accepted: 08/19/2021] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Recently, a significant relationship between stress and reproductive failure in women was reported; being one of the possible causes of infertility. The World Health Organization recognizes infertility as a global public health issue; therefore, the interest in understanding the main causes of this issue has increased over the last few decades. Thus, many studies have reported that stress can adversely alter the functionality of the hypothalamic-pituitary-gonadal axis; as well as being one of the reasons of subfertility in patients undergoing in vitro fertilization. Therefore, it can be assumed that stress is closely related to poor in vitro fertilization outcomes. In chronically stressed female rats, irregular estrous cyclicity, increased corticosterone levels, decreased oocyte viability, and increased percentage of abnormal oocytes were obtained in all estrous cycle phases, resulting in reduced oocyte maturation during proestrus. Oocyte maturation disturbed by chronic stress is a crucial factor by which chronic stress disrupts female reproduction. Abstract Background: Stress has been considered as one of the causes of decreased reproductive function in women. However, direct evidence of the effect of chronic stress on oocytes depending on estrous cycle phases is limited. Objective: The present study aimed to evaluate the impact of chronic stress on the viability, integrity, and maturation of rat oocytes depending on estrous cycle phases, specifically proestrus, estrus, and diestrus. Methods: For this purpose, adult female rats were stressed daily by cold water immersion (15 °C) for 30 consecutive days. Results: In chronically stressed female rats, irregular estrous cyclicity, increased corticosterone levels, decreased oocyte viability, and an increased percentage of abnormal oocytes were obtained in all the estrous cycle phases, resulting in reduced oocyte maturation during proestrus. Conclusion: Oocyte maturation disturbed by chronic stress is a crucial factor by which chronic stress disrupts female reproduction
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Affiliation(s)
- Fahiel Casillas
- Department of Biology of Reproduction, Iztapalapa Campus, Metropolitan Autonomous University, Mexico City 09340, Mexico; (F.C.); (L.J.-R.); (A.Á.-Q.); (J.Z.)
| | - Miguel Betancourt
- Department of Health Sciences, Iztapalapa Campus, Metropolitan Autonomous University, Mexico City 09340, Mexico; (M.B.); (Y.D.); (A.L.)
| | - Lizbeth Juárez-Rojas
- Department of Biology of Reproduction, Iztapalapa Campus, Metropolitan Autonomous University, Mexico City 09340, Mexico; (F.C.); (L.J.-R.); (A.Á.-Q.); (J.Z.)
| | - Yvonne Ducolomb
- Department of Health Sciences, Iztapalapa Campus, Metropolitan Autonomous University, Mexico City 09340, Mexico; (M.B.); (Y.D.); (A.L.)
| | - Alma López
- Department of Health Sciences, Iztapalapa Campus, Metropolitan Autonomous University, Mexico City 09340, Mexico; (M.B.); (Y.D.); (A.L.)
| | - Alejandra Ávila-Quintero
- Department of Biology of Reproduction, Iztapalapa Campus, Metropolitan Autonomous University, Mexico City 09340, Mexico; (F.C.); (L.J.-R.); (A.Á.-Q.); (J.Z.)
| | - Jimena Zamora
- Department of Biology of Reproduction, Iztapalapa Campus, Metropolitan Autonomous University, Mexico City 09340, Mexico; (F.C.); (L.J.-R.); (A.Á.-Q.); (J.Z.)
| | - Mohammad Mehdi Ommati
- Department of Bioinformatics, College of Life Sciences, Shanxi Agricultural University, Jinzhong 030801, China;
| | - Socorro Retana-Márquez
- Department of Biology of Reproduction, Iztapalapa Campus, Metropolitan Autonomous University, Mexico City 09340, Mexico; (F.C.); (L.J.-R.); (A.Á.-Q.); (J.Z.)
- Correspondence: ; Tel.: +52-55-4050-5395
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Chen S, Liu W, Yang C, Li X, Shen X, Jiang D, Huang Y, Tian Y. Gonadotropin inhibitory hormone downregulates steroid hormone secretion and genes expressions in duck granulosa cells. Anim Reprod 2021; 18:e20210036. [PMID: 34306216 PMCID: PMC8291778 DOI: 10.1590/1984-3143-ar2021-0036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/07/2021] [Indexed: 12/02/2022] Open
Abstract
The mechanisms by which GnIH regulates the steroid synthesis pathway in duck granulosa cells remain poorly understood. In this study, we measured steroid hormone secretion by ELISA and reproduction-associated gene expression by quantitative real-time Polymerase Chain Reaction (qPCR) in duck granulosa cells treated with different concentrations of GnIH (0, 0.1, 1, 10, and 100 ng/mL) for 24 h. The genome-wide expression profiles of GnIH-treated cells (0 and 10 ng/mL) were evaluated by high-throughput RNA sequencing. Compared with untreated cells, the secretion of the steroid hormones E2, E1, P4, and T was downregulated, with that of E1 and P4 reaching statistical significance (P<0.05); in contrast, the secretion of ACV and INH was significantly upregulated (P<0.05) after treatment with 10 and 100 ng/mL GnIH. The expression of encoding steroidogenic proteins and enzymes genes (STAR, CYP11A1, CYP17A1, CYP19A1, and 3-β-HSD) and encoding gonadotropin receptors genes (FSHR, LHR) were significantly declined (P<0.05) in the 10 and 100 ng/mL GnIH treatments. Transcriptome sequencing identified 348 differentially expressed genes (DEGs), including 253 upregulated and 95 downregulated genes. The DEGs were mainly involved in cell growth and death, immune response, and steroid biosynthesis pathways. We identified four novel DEGs (MROH5, LOC113840576, SDR42E1, and LOC113841457) with key roles in the regulation of steroid hormone biosynthesis. Our study revealed changes in gonadal steroid hormone secretion and steroid biosynthesis pathway-related gene expression in duck granulosa cells under the inhibitory effect of GnIH. These data contribute to our understanding of the molecular and genetic mechanisms underlying reproduction in ducks.
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Affiliation(s)
- Shijian Chen
- Zhongkai University of Agriculture and Engineering, Guangdong Guangzhou, China.,Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong Guangzhou, China
| | - Wenjun Liu
- Zhongkai University of Agriculture and Engineering, Guangdong Guangzhou, China.,Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong Guangzhou, China
| | - Chen Yang
- Zhongkai University of Agriculture and Engineering, Guangdong Guangzhou, China.,Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong Guangzhou, China
| | - Xiujin Li
- Zhongkai University of Agriculture and Engineering, Guangdong Guangzhou, China.,Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong Guangzhou, China
| | - Xu Shen
- Zhongkai University of Agriculture and Engineering, Guangdong Guangzhou, China.,Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong Guangzhou, China
| | - Danli Jiang
- Zhongkai University of Agriculture and Engineering, Guangdong Guangzhou, China.,Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong Guangzhou, China
| | - Yunmao Huang
- Zhongkai University of Agriculture and Engineering, Guangdong Guangzhou, China.,Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong Guangzhou, China
| | - Yunbo Tian
- Zhongkai University of Agriculture and Engineering, Guangdong Guangzhou, China.,Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangdong Guangzhou, China
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9
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Sun J, Guo Y, Fan Y, Wang Q, Zhang Q, Lai D. Decreased expression of IDH1 by chronic unpredictable stress suppresses proliferation and accelerates senescence of granulosa cells through ROS activated MAPK signaling pathways. Free Radic Biol Med 2021; 169:122-136. [PMID: 33865962 DOI: 10.1016/j.freeradbiomed.2021.04.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 04/09/2021] [Accepted: 04/10/2021] [Indexed: 12/20/2022]
Abstract
Studies suggested that psychosocial stress was associated with female fertility decline, but the underlying mechanisms remained unclear. Granulosa cells (GCs) are important somatic cells to support follicular development and oocyte maturation. Herein, by using a mouse model of chronic unpredictable stress (CUS), we found that CUS induced oxidative stress damage in mouse ovaries, also inhibited GCs proliferation and accelerated GCs senescence. Isocitrate dehydrogenase-1 (IDH1), an antioxidant related gene by generating NADPH, was shown to be downregulated in GCs of CUS mice. Consistently, IDH1 knockdown inhibited cell proliferation and accelerated cellular senescence in KGN cells in vitro. In addition, IDH1 knockdown increased ROS content, induced autophagy activation and triggered cell cycle arrest in S and G2/M phases in KGN cells, which could be rescued by N-acetyl-l-cysteine (NAC), a ROS scavenger in these cells. Besides, IDH1 knockdown activated MAPK signaling pathways, including ERK, JNK and p38 signaling pathways in KGN cells, while NAC could suppress the activation. Through using inhibitors of MAPK signaling pathways, we showed that the activation of ERK pathway participated in autophagy related cell proliferation inhibition and cellular senescence, whereas JNK and p38 MAPK signaling pathways took part in regulation cell cycle arrest associated cell proliferation inhibitory and senescence in IDH1 knockdown KGN cells. Our findings suggested that downregulated expression of IDH1 induced by CUS has a physiological function in GCs proliferation and senescence through ROS activated MAPK signaling pathways, and improvement of IDH1 activity might be a beneficial therapeutic strategy for ovarian dysfunction.
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Affiliation(s)
- Junyan Sun
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China; Shanghai Municipal Key Clinical Speciality, Shanghai, 200030, China
| | - Ying Guo
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China; Shanghai Municipal Key Clinical Speciality, Shanghai, 200030, China
| | - Yihui Fan
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China; Shanghai Municipal Key Clinical Speciality, Shanghai, 200030, China
| | - Qian Wang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China; Shanghai Municipal Key Clinical Speciality, Shanghai, 200030, China
| | - Qiuwan Zhang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China; Shanghai Municipal Key Clinical Speciality, Shanghai, 200030, China
| | - Dongmei Lai
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200030, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China; Shanghai Municipal Key Clinical Speciality, Shanghai, 200030, China.
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10
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Li X, Xu G, Li Z, Liu H, Ma X, Yang L, Zhang P, Zhao J, Wang J, Lu W. Gonadotropin-inhibiting hormone promotes apoptosis of bovine ovary granulosa cells. Life Sci 2021; 270:119063. [PMID: 33460664 DOI: 10.1016/j.lfs.2021.119063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/24/2020] [Accepted: 12/30/2020] [Indexed: 02/02/2023]
Abstract
Gonadotropin-inhibiting hormone (GnIH) inhibits the synthesis and release of gonadotropin by binding to its receptor. GnIH is involved in animal reproductive regulation, especially ovary function. It can regulate the proliferation, apoptosis and hormone secretion of follicular cells. However, the role and molecular mechanism of GnIH in bovine granulosa cell (bGC) apoptosis is unclear. Here, the effects of GnIH on proliferation, apoptosis, and mitochondrial function of bGCs were detected. A 10-6 mol/mL concentration of GnIH inhibited bGC proliferation, promoted GC apoptosis, and damaged mitochondrial function. Additionally, GnIH significantly decreased the phosphorylation level of p38 (P < 0.01). To explore the role of the p38 signaling pathway in the process of GnIH-induced apoptosis in bGCs, an activator of p38 (U46619) was used to pretreat bGCs. U46619 pretreatment significantly alleviated GnIH damage to bGCs, including proliferation, apoptosis, and mitochondrial function. In conclusion, these results demonstrated that GnIH inhibited proliferation and promoted apoptosis of bGCs via the p38 signaling pathway.
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Affiliation(s)
- Xu Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China; Branch of Animal Husbandry, Jilin Academy of Agricultural Science, Gongzhuling, Jilin 136100, China
| | - Gaoqing Xu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Zhiqiang Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Hongyu Liu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Xin Ma
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Lianyu Yang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Pengju Zhang
- Branch of Animal Husbandry, Jilin Academy of Agricultural Science, Gongzhuling, Jilin 136100, China
| | - Jing Zhao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China.
| | - Jun Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China.
| | - Wenfa Lu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China.
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11
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Zmijewska A, Czelejewska W, Dziekonski M, Gajewska A, Franczak A, Okrasa S. Effect of kisspeptin and RFamide-related peptide-3 on the synthesis and secretion of LH by pituitary cells of pigs during the estrous cycle. Anim Reprod Sci 2020; 214:106275. [DOI: 10.1016/j.anireprosci.2020.106275] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 12/13/2019] [Accepted: 01/07/2020] [Indexed: 10/25/2022]
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12
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Huo K, Li X, Hu W, Song X, Zhang D, Zhang X, Chen X, Yuan J, Zuo J, Wang X. RFRP-3, the Mammalian Ortholog of GnIH, Is a Novel Modulator Involved in Food Intake and Glucose Homeostasis. Front Endocrinol (Lausanne) 2020; 11:194. [PMID: 32328034 PMCID: PMC7160250 DOI: 10.3389/fendo.2020.00194] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 03/18/2020] [Indexed: 11/13/2022] Open
Abstract
RF amide-related peptide 3 (RFRP-3) is a reproductive inhibitor and an endogenous orexigenic neuropeptide that may be involved in energy homeostasis. In this study, we evaluated the effect of acute or chronic RFRP-3 treatment (administered via intraperitoneal injection) on the food intake, meal microstructure and weight of rats, as well as the mechanism through which RFRP-3 is involved in glucose metabolism in the pancreas and glucose disposal tissues of rat in vivo. Our results showed that the intraperitoneal administration of RFRP-3 to rats resulted in marked body mass increased, hyperphagia, hyperlipidemia, hyperglycemia, glucose intolerance, hypoinsulinism, hyperglucagon, and insulin resistance, as well as significant increases in the size of pancreatic islets and the inflammatory reaction. Thus, we strongly assert that RFRP-3 as a novel neuroendocrine regulator involved in blood glucose homeostasis.
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13
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Wilsterman K, Bentley GE, Comizzoli P. RFRP3 influences basal lamina degradation, cellular death, and progesterone secretion in cultured preantral ovarian follicles from the domestic cat. PeerJ 2019; 7:e7540. [PMID: 31497402 PMCID: PMC6709664 DOI: 10.7717/peerj.7540] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 07/23/2019] [Indexed: 12/14/2022] Open
Abstract
The hypothalamic neuropeptide RFRP3 can suppress hypothalamic GnRH neuron activation and inhibit gonadotropin release from the anterior pituitary. RFRP3 is also produced locally in the ovary and can inhibit steroidogenesis and follicle development in many vertebrates. However, almost nothing is known about the presence and regulatory action of RFRP3 in gonads of any carnivore species. Such knowledge is important for developing captive breeding programs for endangered carnivores and for inhibiting reproduction in feral species. Using the domestic cat as a model, our objectives were to (1) demonstrate the expression of feline RFRP3 (fRFRP3) and its receptor in the cat ovary and (2) assess the influence of fRFRP3 on ovarian follicle integrity, survival, and steroidogenesis in vitro. We first confirmed that fRFRP3 and its receptors (NPFFR1 and NPFFR2) were expressed in cat ovaries by sequencing PCR products from ovarian RNA. We then isolated and cultured preantral ovarian follicles in the presence of 10 or 1 µM fRFRP3 + FSH (1 µg/mL). We recorded the percentage of morphologically viable follicles (basal lamina integrity) over 8 days and calculated percentage survival of follicles on Day 8 (using fluorescent markers for cell survival and death). Last, we quantified progesterone accumulation in media. 10 µM fRFRP3 had no observable effect on viability, survival, or steroid production compared to follicles exposed to only FSH. However, 1 µM fRFRP3 decreased the percentage of morphologically viable follicles and the percentage of surviving follicles on Day 8. At the same time, 1 µM fRFRP3 increased the accumulation of progesterone in media. Our study shows, for the first time, direct action of RFRP3 on the follicle as a functional unit, and it is the first in a carnivore species. More broadly, our results support a conserved, inhibitory action of RFRP3 on ovarian follicle development and underscore the importance of comparative functional studies.
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Affiliation(s)
- Kathryn Wilsterman
- Integrative Biology, University of California, Berkeley, Berkeley, CA, United States of America
| | - George E Bentley
- Integrative Biology, University of California, Berkeley, Berkeley, CA, United States of America.,Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, United States of America
| | - Pierre Comizzoli
- Smithsonian Conservation Biology Institute, Washington, DC, United States of America
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14
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Ubuka T, Tsutsui K. Reproductive neuroendocrinology of mammalian gonadotropin-inhibitory hormone. Reprod Med Biol 2019; 18:225-233. [PMID: 31312100 PMCID: PMC6613023 DOI: 10.1002/rmb2.12272] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/25/2019] [Accepted: 04/05/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Gonadotropin-inhibitory hormone (GnIH) was discovered in the Japanese quail brain in 2000 as a hypothalamic neuropeptide that suppresses luteinizing hormone release from cultured quail anterior pituitary. METHODS The authors investigated the existence of mammalian orthologous peptides to GnIH and their physiological functions in the following 19 years of research. MAIN FINDINGS Mammals have orthologous peptide to GnIH, often described RFamide-related peptide, expressed in the hypothalamus and gonads. Mammalian GnIH may also suppress gonadotropin synthesis and release by suppressing gonadotropin-releasing hormone (GnRH) synthesis and release in addition to directly suppressing gonadotropin synthesis and release from the pituitary. Mammalian GnIH may also suppress kisspeptin, a stimulator of GnRH, release. Mammalian GnIH is also expressed in the testis and ovary and suppresses gametogenesis and sex steroid production acting in an autocrine/paracrine manner. Thus, mammalian GnIH may act at all levels of the hypothalamic-pituitary-gonadal axis to suppress reproduction. GnIH may be involved in the regulation of puberty, estrous or menstrual cycle, seasonal reproduction, and stress responses. CONCLUSION Studies suggest that mammalian GnIH is an important neuroendocrine suppressor of reproduction in mammals.
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Affiliation(s)
- Takayoshi Ubuka
- Laboratory of Integrative Brain Sciences, Department of Biology and Center for Medical Life ScienceWaseda UniversityShinjukuJapan
| | - Kazuyoshi Tsutsui
- Laboratory of Integrative Brain Sciences, Department of Biology and Center for Medical Life ScienceWaseda UniversityShinjukuJapan
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15
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Wang W, Luo SM, Ma JY, Shen W, Yin S. Cytotoxicity and DNA Damage Caused from Diazinon Exposure by Inhibiting the PI3K-AKT Pathway in Porcine Ovarian Granulosa Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:19-31. [PMID: 30525588 DOI: 10.1021/acs.jafc.8b05194] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Organophosphorus insecticide diazinon (DZN) is diffusely used in agriculture, home gardening, and crop peats. Much work so far has focused on the link between DZN exposure and the occurrence of neurological diseases, while little is known on the reproductive toxicological assessment on DZN exposure. This research aimed to investigate the underlying mechanisms of toxic hazards for DZN exposure on cultured porcine ovarian granulosa cells. We analyzed the oxidative stress, energy metabolism, DNA damage, apoptosis, and autophagy by using high-throughput RNA-seq, immunofluorescence, Western blotting, and real-time PCR. The combined data demonstrated that DZN exposure could cause excessive ROS and DNA damage, which induced apoptosis and autophagy by inhibiting the PI3K-AKT pathway. The down-regulated CYP19A1 protein and granulosa cell deaths increase the risk for developing premature ovarian failure and follicular atresia. In conclusion, DZN exposure has obvious reproductive toxicity by induction of granulosa cell death through pathways connected to DNA damage and oxidative stress by inhibiting the PI3K-AKT pathway.
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Affiliation(s)
- Wei Wang
- College of Life Sciences, Institute of Reproductive Sciences , Qingdao Agricultural University , Qingdao 266109 , China
| | - Shi-Ming Luo
- College of Life Sciences, Institute of Reproductive Sciences , Qingdao Agricultural University , Qingdao 266109 , China
| | - Jun-Yu Ma
- College of Life Sciences, Institute of Reproductive Sciences , Qingdao Agricultural University , Qingdao 266109 , China
| | - Wei Shen
- College of Life Sciences, Institute of Reproductive Sciences , Qingdao Agricultural University , Qingdao 266109 , China
| | - Shen Yin
- College of Life Sciences, Institute of Reproductive Sciences , Qingdao Agricultural University , Qingdao 266109 , China
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