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Xiao-Hong H, Meng W, Yang-Yang P, Jiang-Feng F, Jing-Lei W, Ling Z, Ya-Ying W, Tong-Xiang Z, Tian Z, Tian-Yi D, Yan C, Si-Jiu Y. Effect of follicle-stimulating hormone and luteinizing hormone on apoptosis, autophagy, and the release and reception of some steroid hormones in yak granulosa cells through miR-23a/ASK1 axis. Cell Signal 2024; 115:111010. [PMID: 38128707 DOI: 10.1016/j.cellsig.2023.111010] [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: 11/14/2023] [Revised: 12/10/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023]
Abstract
Follicle-stimulating hormone (FSH), luteinizing hormone (LH), miR-23a, apoptosis signal-regulating kinase 1(ASK1)/c-Jun N-terminal kinase (JNK), autophagy and apoptosis play crucial roles in follicular development. However, their role in yak granulosa cells (GCs) remains unknown. Therefore, we examined the effect of miR-23a, ASK1, FSH, and LH on apoptosis, autophagy, and the release and reception of some steroid hormones in these cells. Our results showed that miR-23a overexpression significantly increased the abundance of Beclin1, the LC3II/I ratio, and the number of Ad-mRFP-GFP-LC3-labeled autophagosomes, and decreased p62 abundance. Additionally, Bax abundance and the number of terminal deoxynucleotidyl transferase deoxynucleotide triphosphate nick end labeling-positive cells were reduced, while Bcl2 expression was increased. Overexpression of miR-23a also significantly increased the abundance of estradiol receptor α (ER-α) and β (ER-β) and the concentrations of estradiol (E2), progesterone (P4) in yak GCs. Here, treating yak GCs with miR-23a decreased ASK1 expression, which regulates ASK1/JNK-mediated apoptosis, autophagy, E2 and P4 levels, and ER-α/β abundance. In contrast, treatment of yak GCs with FSH (10 μg/mL) and LH (100 μg/mL) increased miR-23a abundance, regulating the subsequent effect on ASK1/JNK-mediated apoptosis, autophagy, ER-α/β abundance, and E2 and P4 concentrations. In conclusion, miR-23a enhances autophagy in yak GCs, attenuates apoptosis, and increases ER-α/β abundance and E2 and P4 concentrations by downregulating ASK1. Additionally, FSH and LH can regulate these effects of miR-23a by altering its expression. These results provide important insights that can inform the development of strategies to reduce abnormal follicular atresia and improve the reproductive rate of yaks.
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Affiliation(s)
- Han Xiao-Hong
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China
| | - Wang Meng
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Pan Yang-Yang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China
| | - Fan Jiang-Feng
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China
| | - Wang Jing-Lei
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Zhao Ling
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Wang Ya-Ying
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Zhang Tong-Xiang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Zhao Tian
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Ding Tian-Yi
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Cui Yan
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China
| | - Yu Si-Jiu
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China; Gansu Province Livestock Embryo Engineering Research Center, Lanzhou 730070, China.
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Wang X, Chen Y, Meng H, Meng F. SREBPs as the potential target for solving the polypharmacy dilemma. Front Physiol 2024; 14:1272540. [PMID: 38269061 PMCID: PMC10806128 DOI: 10.3389/fphys.2023.1272540] [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: 09/04/2023] [Accepted: 12/26/2023] [Indexed: 01/26/2024] Open
Abstract
The phenomenon of polypharmacy is a common occurrence among older people with multiple health conditions due to the rapid increase in population aging and the popularization of clinical guidelines. The prevalence of metabolic syndrome is growing quickly, representing a serious threat to both the public and the worldwide healthcare systems. In addition, it enhances the risk of cardiovascular disease as well as mortality and morbidity. Sterol regulatory element binding proteins (SREBPs) are basic helix-loop-helix leucine zipper transcription factors that transcriptionally modulate genes that regulate lipid biosynthesis and uptake, thereby serving an essential role in biological systems regulation. In this article, we have described the structure of SREBPs and explored their activation and regulation of signals. We also reveal that SREBPs are intricately involved in the modulation of metabolic diseases and thus have tremendous potential as the novel target for single-drug therapy for multiple diseases.
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Affiliation(s)
| | | | | | - Fanbo Meng
- Jilin Provincial Precision Medicine Key Laboratory for Cardiovascular Genetic Diagnosis (Jilin Provincial Engineering Laboratory for Endothelial Function and Genetic Diagnosis of Cardiovascular Disease, Jilin Provincial Molecular Biology Research Center for Precision Medicine of Major Cardiovascular Disease, Jilin Provincial Cardiovascular Research Institute), Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun, China
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3
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Macvanin MT, Gluvic ZM, Klisic AN, Manojlovic MS, Suri JS, Rizzo M, Isenovic ER. The Link between miRNAs and PCKS9 in Atherosclerosis. Curr Med Chem 2024; 31:6926-6956. [PMID: 37990898 DOI: 10.2174/0109298673262124231102042914] [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: 05/12/2023] [Revised: 06/30/2023] [Accepted: 09/11/2023] [Indexed: 11/23/2023]
Abstract
Cardiovascular disease (CDV) represents the major cause of death globally. Atherosclerosis, as the primary cause of CVD, is a chronic immune-inflammatory disorder with complex multifactorial pathophysiology encompassing oxidative stress, enhanced immune-inflammatory cascade, endothelial dysfunction, and thrombosis. An initiating event in atherosclerosis is the subendothelial accumulation of low-density lipoprotein (LDL), followed by the localization of macrophages to fatty deposits on blood vessel walls, forming lipid-laden macrophages (foam cells) that secrete compounds involved in plaque formation. Given the fact that foam cells are one of the key culprits that underlie the pathophysiology of atherosclerosis, special attention has been paid to the investigation of the efficient therapeutic approach to overcome the dysregulation of metabolism of cholesterol in macrophages, decrease the foam cell formation and/or to force its degradation. Proprotein convertase subtilisin/kexin type 9 (PCSK9) is a secretory serine proteinase that has emerged as a significant regulator of the lipid metabolism pathway. PCSK9 activation leads to the degradation of LDL receptors (LDLRs), increasing LDL cholesterol (LDL-C) levels in the circulation. PCSK9 pathway dysregulation has been identified as one of the mechanisms involved in atherosclerosis. In addition, microRNAs (miRNAs) are investigated as important epigenetic factors in the pathophysiology of atherosclerosis and dysregulation of lipid metabolism. This review article summarizes the recent findings connecting the role of PCSK9 in atherosclerosis and the involvement of various miRNAs in regulating the expression of PCSK9-related genes. We also discuss PCSK9 pathway-targeting therapeutic interventions based on PCSK9 inhibition, and miRNA levels manipulation by therapeutic agents.
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Affiliation(s)
- Mirjana T Macvanin
- Department of Radiobiology and Molecular Genetics, VINČA Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Zoran M Gluvic
- Department of Endocrinology and Diabetes, School of Medicine, University Clinical-Hospital Centre Zemun-Belgrade, Clinic of Internal Medicine, University of Belgrade, Belgrade, Serbia
| | - Aleksandra N Klisic
- Faculty of Medicine, Center for Laboratory Diagnostic, Primary Health Care Center, University of Montenegro, Podgorica, Montenegro
| | - Mia S Manojlovic
- Faculty of Medicine Novi Sad, University of Novi Sad, Novi Sad, Serbia
- Clinic for Endocrinology, Diabetes and Metabolic Disorders, Clinical Center of Vojvodina, Novi Sad, Serbia
| | - Jasjit S Suri
- Stroke Monitoring and Diagnostic Division, Athero- Point™, Roseville, CA95661, USA
| | - Manfredi Rizzo
- Department of Health Promotion, School of Medicine, Mother and Child Care and Medical Specialties (Promise), University of Palermo, Palermo, Italy
| | - Esma R Isenovic
- Department of Radiobiology and Molecular Genetics, VINČA Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Derkach KV, Lebedev IA, Morina IY, Bakhtyukov AA, Pechalnova AS, Sorokoumov VN, Kuznetsova VS, Romanova IV, Shpakov AO. Comparison of Steroidogenic and Ovulation-Inducing Effects of Orthosteric and Allosteric Agonists of Luteinizing Hormone/Chorionic Gonadotropin Receptor in Immature Female Rats. Int J Mol Sci 2023; 24:16618. [PMID: 38068943 PMCID: PMC10706028 DOI: 10.3390/ijms242316618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 11/17/2023] [Accepted: 11/19/2023] [Indexed: 12/18/2023] Open
Abstract
Gonadotropins, including human chorionic gonadotropin (hCG), are used to induce ovulation, but they have a number of side effects, including ovarian hyperstimulation syndrome (OHSS). A possible alternative is allosteric luteinizing hormone (LH)/hCG receptor agonists, including the compound TP4/2 we developed, which remains active when administered orally. The aim was to study the effectiveness of TP4/2 (orally, 40 mg/kg) as an ovulation inducer in FSH-stimulated immature female rats, compared with hCG (s.c., 15 IU/rat). TP4/2 stimulated progesterone production and corpus luteum formation; time-dependently increased the ovarian expression of steroidogenic genes (Star, Cyp11a1, Cyp17a1) and genes involved in ovulation regulation (Adamts-1, Cox-2, Egr-1, Mt-1); and increased the content of metalloproteinase ADAMTS-1 in the ovaries. These effects were similar to those of hCG, although in some cases they were less pronounced. TP4/2, in contrast to hCG, maintained normal LH levels and increased the ovarian expression of the LH/hCG receptor gene, indicating preservation of ovarian sensitivity to LH, and did not cause a sustained increase in expression of vascular endothelial growth factor-A involved in OHSS. Thus, TP4/2 is an effective ovulation inducer that, unlike hCG, has a lower risk of OHSS and ovarian LH resistance due to its moderate stimulating effect on steroidogenesis.
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Affiliation(s)
- Kira V. Derkach
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg 194223, Russia; (K.V.D.); (I.A.L.); (A.A.B.); (V.N.S.); (V.S.K.); (I.V.R.)
| | - Ivan A. Lebedev
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg 194223, Russia; (K.V.D.); (I.A.L.); (A.A.B.); (V.N.S.); (V.S.K.); (I.V.R.)
| | - Irina Yu. Morina
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg 194223, Russia; (K.V.D.); (I.A.L.); (A.A.B.); (V.N.S.); (V.S.K.); (I.V.R.)
| | - Andrey A. Bakhtyukov
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg 194223, Russia; (K.V.D.); (I.A.L.); (A.A.B.); (V.N.S.); (V.S.K.); (I.V.R.)
| | - Alena S. Pechalnova
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg 194223, Russia; (K.V.D.); (I.A.L.); (A.A.B.); (V.N.S.); (V.S.K.); (I.V.R.)
| | - Viktor N. Sorokoumov
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg 194223, Russia; (K.V.D.); (I.A.L.); (A.A.B.); (V.N.S.); (V.S.K.); (I.V.R.)
- Institute of Chemistry, St. Petersburg State University, St. Petersburg 199034, Russia
| | - Veronica S. Kuznetsova
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg 194223, Russia; (K.V.D.); (I.A.L.); (A.A.B.); (V.N.S.); (V.S.K.); (I.V.R.)
| | - Irina V. Romanova
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg 194223, Russia; (K.V.D.); (I.A.L.); (A.A.B.); (V.N.S.); (V.S.K.); (I.V.R.)
| | - Alexander O. Shpakov
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg 194223, Russia; (K.V.D.); (I.A.L.); (A.A.B.); (V.N.S.); (V.S.K.); (I.V.R.)
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Li Y, Wu S, Zhao X, Hao S, Li F, Wang Y, Liu B, Zhang D, Wang Y, Zhou H. Key events in cancer: Dysregulation of SREBPs. Front Pharmacol 2023; 14:1130747. [PMID: 36969840 PMCID: PMC10030587 DOI: 10.3389/fphar.2023.1130747] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 02/22/2023] [Indexed: 03/11/2023] Open
Abstract
Lipid metabolism reprogramming is an important hallmark of tumor progression. Cancer cells require high levels of lipid synthesis and uptake not only to support their continued replication, invasion, metastasis, and survival but also to participate in the formation of biological membranes and signaling molecules. Sterol regulatory element binding proteins (SREBPs) are core transcription factors that control lipid metabolism and the expression of important genes for lipid synthesis and uptake. A growing number of studies have shown that SREBPs are significantly upregulated in human cancers and serve as intermediaries providing a mechanistic link between lipid metabolism reprogramming and malignancy. Different subcellular localizations, including endoplasmic reticulum, Golgi, and nucleus, play an indispensable role in regulating the cleavage maturation and activity of SREBPs. In this review, we focus on the relationship between aberrant regulation of SREBPs activity in three organelles and tumor progression. Because blocking the regulation of lipid synthesis by SREBPs has gradually become an important part of tumor therapy, this review also summarizes and analyzes several current mainstream strategies.
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Affiliation(s)
- Yunkuo Li
- Department of Urology, The First Hospital of Jilin University, Changchun, China
| | - Shouwang Wu
- Department of Urology, The First Hospital of Jilin University, Changchun, China
| | - Xiaodong Zhao
- Department of Urology, The First Hospital of Jilin University, Changchun, China
| | - Shiming Hao
- Department of Urology, The First Hospital of Jilin University, Changchun, China
| | - Faping Li
- Department of Urology, The First Hospital of Jilin University, Changchun, China
| | - Yuxiong Wang
- Department of Urology, The First Hospital of Jilin University, Changchun, China
| | - Bin Liu
- Department of Urology, The First Hospital of Jilin University, Changchun, China
| | - Difei Zhang
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, China
| | - Yishu Wang
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, China
- *Correspondence: Yishu Wang, Honglan Zhou,
| | - Honglan Zhou
- Department of Urology, The First Hospital of Jilin University, Changchun, China
- *Correspondence: Yishu Wang, Honglan Zhou,
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Bakhtyukov AA, Derkach KV, Fokina EA, Lebedev IA, Sorokoumov VN, Bayunova LV, Shpakov AO. Effect of Different Luteinizing Hormone Receptor Agonists on Ovarian Steroidogenesis in Mature Female Rats. J EVOL BIOCHEM PHYS+ 2023. [DOI: 10.1134/s0022093023010052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
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Nakanishi T, Tanaka R, Tonai S, Lee JY, Yamaoka M, Kawai T, Okamoto A, Shimada M, Yamashita Y. LH Induces De Novo Cholesterol Biosynthesis via SREBP Activation in Granulosa Cells During Ovulation in Female Mice. Endocrinology 2021; 162:6357690. [PMID: 34431998 DOI: 10.1210/endocr/bqab166] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Indexed: 12/22/2022]
Abstract
In the liver, the sterol response element binding protein (SREBP) and the SREBP cleavage-activated protein (SCAP) complex upregulate cholesterol biosynthesis by gene induction of de novo cholesterol synthetic enzymes (Hmgcr, Cyp51, and Dhcr7). Insulin induced gene 1 (INSIG1) negatively regulates cholesterol biosynthesis by the inhibition of de novo cholesterol biosynthetic gene expression. In the ovary, cholesterol is de novo synthesized; however, the roles of SREBP and its regulators (SCAP and INSIG1) are not well understood. In this study, when immature mice were treated with gonadotropins (eCG followed by hCG), eCG induced and hCG maintained the expression of SREBP-1a, -2, and SCAP granulosa cells, whereas INSIG1 expression was dramatically downregulated after hCG injection. Downregulation of INSIG1 led to generate the SREBPs active form and translocate the SREBPs active form to nuclei. Inhibition of generation of the SREBPs active form by fatostatin or Scap siRNA in both in vivo and in vitro significantly decreased the expressions of de novo cholesterol biosynthetic enzymes, cholesterol accumulation, and progesterone (P4) production compared with the control group. Fatostatin treatment inhibited the ovulation and increased the formation of abnormal corpus luteum which trapped the matured oocyte in the corpus luteum; however, the phenomenon was abolished by P4 administration. The results showed that decreasing INSIG1 level after hCG stimulation activated SREBP-induced de novo cholesterol biosynthesis in granulosa cells of preovulatory follicles, which is essential for P4 production and the rupture of matured oocyte during ovulation process.
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Affiliation(s)
- Tomoya Nakanishi
- Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima, Shobara, 727-0023, Japan
| | - Risa Tanaka
- Department of Bioresource Sciences, Prefectural University of Hiroshima, Shobara, 727-0023, Japan
| | - Shingo Tonai
- Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima, Shobara, 727-0023, Japan
| | - Joo Yeon Lee
- Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima, Shobara, 727-0023, Japan
| | - Manami Yamaoka
- Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima, Shobara, 727-0023, Japan
| | - Tomoko Kawai
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, 739-8528, Japan
| | - Asako Okamoto
- Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima, Shobara, 727-0023, Japan
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, 739-8528, Japan
| | - Masayuki Shimada
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, 739-8528, Japan
| | - Yasuhisa Yamashita
- Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima, Shobara, 727-0023, Japan
- Department of Bioresource Sciences, Prefectural University of Hiroshima, Shobara, 727-0023, Japan
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Han Y, Chen Y, Yang F, Sun X, Zeng S. Mechanism underlying the stimulation by IGF-1 of LHCGR expression in porcine granulosa cells. Theriogenology 2021; 169:56-64. [PMID: 33933758 DOI: 10.1016/j.theriogenology.2021.04.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 04/14/2021] [Accepted: 04/19/2021] [Indexed: 11/18/2022]
Abstract
IGF-1 plays important roles in mammalian fertility by promoting cell growth and increasing steroid hormone secretion. Although IGF-1 significantly upregulated luteinizing hormone/choriogonadotropin receptor (LHCGR) gene expression in granulosa cells in a previous study, the mechanism was unclear. The present experiment was designed to primarily explore the regulation of LHCGR expression by IGF-1. First, based on a porcine LHCGR double-luciferase reporter experiment, c-Fos significantly inhibited the activity of the LHCGR promoter. Second, porcine granulosa cells were cultured in vitro with IGF-1, and we observed that the expression of LHCGR was significantly increased and the expression of c-Fos mRNA significantly reduced. After c-Fos overexpression in granulosa cells, IGF-1 attenuated the inhibitory effect of c-Fos on LHCGR. Furthermore, the level of LHCGR mRNA stimulated by IGF-1 in the presence of SB203580 was markedly lower than that of IGF-1 alone action. In conclusion, IGF-1 enhanced the expression of LHCGR by regulating c-Fos in granulosa cells, which may be mediated by the p38MAPK-signaling pathway.
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Affiliation(s)
- Ying Han
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China; College of Agronomy, Liaocheng University, Liaocheng, 252000, Shandong, China
| | - Yanhong Chen
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Feng Yang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Xiaomei Sun
- Jiangsu Key Laboratory of Animal Genetics, Breeding and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Shenming Zeng
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
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Human Chorionic Gonadotropin-Mediated Induction of Breast Cancer Cell Proliferation and Differentiation. Cells 2021; 10:cells10020264. [PMID: 33572731 PMCID: PMC7911704 DOI: 10.3390/cells10020264] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 01/21/2021] [Accepted: 01/26/2021] [Indexed: 02/07/2023] Open
Abstract
Human chorionic gonadotropin (hCG) is a hormone that specifically binds to luteinizing hormone receptor (LHR) and exerts several roles, including the support of pregnancy and fetal gonadal steroidogenesis. Since hCG is also expressed by some tumor types, like breast cancer, many efforts have been made to study its role in neoplesia, with some studies showing a cancer-supportive role and others showing a cancer-protective role. A critical examination of the literature highlighted that the in vitro effect of hCG has been tested in the presence of fetal serum, which contains other gonadotropins, in the culture medium. Thus, we hypothesized that the use of serum in the cell culture medium might influence the cell response to the hCG treatment due to the presence of other hormones. Thus, we analyzed the in vitro effect of highly purified hCG on cell proliferation and the activation of the down-stream signal transduction pathway in three breast cancer cell lines, particularly focusing on MCF7, cultured in serum-deprived conditions. Our data show that hCG increases cell proliferation and activates the down-stream target Akt, together with a decrease of the LHR mRNA expression level. Finally, we also tested the differentiation capacity of hCG on MCF7 cancer stem cells (CSCs) and show that it favors the proliferation and differentiation of these cells, thus suggesting that hCG also renders cells more able to colonize and invade the organs.
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Yu ZW, Gao W, Feng XY, Zhang JY, Guo HX, Wang CJ, Chen J, Hu JP, Ren WZ, Yuan B. Roles of differential expression of miR-543-5p in GH regulation in rat anterior pituitary cells and GH3 cells. PLoS One 2019; 14:e0222340. [PMID: 31509580 PMCID: PMC6738916 DOI: 10.1371/journal.pone.0222340] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 08/27/2019] [Indexed: 12/23/2022] Open
Abstract
Growth hormone (GH) is an important hormone released by the pituitary gland that plays a key role in the growth and development of organisms. In our study, TargetScan analysis and the dual luciferase reporter assays were used to predict and screen for miRNAs that might act on the rat Gh1 gene, and we identified miR-543-5p. Then, the GH3 cell line and the primary rat pituitary cells were transfected with miRNA mimic, inhibitor, and siRNA. We detected the Gh1 gene expression and the GH secretion by real-time PCR and ELISAs, respectively, to verify the regulatory effect of miR-543-5p on GH secretion. The results showed that miR-543-5p can inhibit Gh1 mRNA expression and reduce GH secretion. MiR-543-5p inhibitor upregulated Gh1 mRNA expression and increased GH secretion compared with the negative control. In summary, miR-543-5p downregulates Gh1 expression, resulting in a decrease in GH synthesis and secretion, which demonstrates the important role of miRNAs in regulating GH and animal growth and development.
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Affiliation(s)
- Ze-Wen Yu
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, P.R. China
| | - Wei Gao
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, P.R. China
| | - Xin-Yao Feng
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, P.R. China
| | - Jin-Yu Zhang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, P.R. China
| | - Hai-Xiang Guo
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, P.R. China
| | - Chang-Jiang Wang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, P.R. China
| | - Jian Chen
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, P.R. China
| | - Jin-Ping Hu
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, P.R. China
| | - Wen-Zhi Ren
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, P.R. China
- * E-mail: (BY); (W-ZR)
| | - Bao Yuan
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, P.R. China
- * E-mail: (BY); (W-ZR)
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Convissar S, Winston NJ, Fierro MA, Scoccia H, Zamah AM, Stocco C. Sp1 regulates steroidogenic genes and LHCGR expression in primary human luteinized granulosa cells. J Steroid Biochem Mol Biol 2019; 190:183-192. [PMID: 30954507 PMCID: PMC6511456 DOI: 10.1016/j.jsbmb.2019.04.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/02/2019] [Accepted: 04/04/2019] [Indexed: 01/29/2023]
Abstract
Luteinizing hormone and human chorionic gonadotropin (hCG) bind to the luteinizing hormone/chorionic gonadotropin receptor (LHCGR). LHCGR is required to maintain corpus luteum function but the mechanisms involved in the regulation of LHCGR in human luteal cells remain incompletely understood. This study aimed to characterize the expression of LHCGR mRNA in primary human luteinized granulosa cells (hLGCs) obtained from patients undergoing in vitro fertilization and to correlate LHCGR expression with the response of hLGCs to hCG by assessing the expression of genes known to be markers of hCG actions. The results show that LHCGR expression is low in freshly isolated cells but recovers rapidly in culture and that hCG maintains LHCGR expression, suggesting a positive feedback loop. The activity of a LHCGR-LUC reporter increased in cells treated with hCG but not with follicle-stimulating hormone. Treatment with hCG also stimulated the expression of genes involved in steroidogenesis in a time-dependent manner. LHCGR promoter expression was found to be regulated by SP1, which we show is highly expressed in hLGCs. Moreover, SP1 inhibition prevented the stimulation of steroidogenic genes and the increase in LHCGR-LUC reporter activity by hCG. Finally, we provide evidence that a complex formed by SP1 and GATA4 may play a role in the maintenance of LHCGR expression. This report reveals the mechanisms involved in the regulation of the LHCGR and provides experimental data demonstrating that the proximal region of the LHCGR promoter is sufficient to drive the expression of this gene in primary hLGCs.
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Affiliation(s)
- Scott Convissar
- Department of Physiology and Biophysics, University of Illinois at Chicago, United States
| | - Nicola J Winston
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Illinois at Chicago College of Medicine, United States
| | - Michelle A Fierro
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Illinois at Chicago College of Medicine, United States
| | - Humberto Scoccia
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Illinois at Chicago College of Medicine, United States
| | - Alberuni M Zamah
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of Illinois at Chicago College of Medicine, United States
| | - Carlos Stocco
- Department of Physiology and Biophysics, University of Illinois at Chicago, United States.
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12
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Wang CJ, Guo HX, Han DX, Yu ZW, Zheng Y, Jiang H, Gao Y, Yuan B, Zhang JB. Pituitary tissue-specific miR-7a-5p regulates FSH expression in rat anterior adenohypophyseal cells. PeerJ 2019; 7:e6458. [PMID: 30993031 PMCID: PMC6461031 DOI: 10.7717/peerj.6458] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 01/16/2019] [Indexed: 12/30/2022] Open
Abstract
The follicle-stimulating hormone (FSH), which is synthesized and secreted by the anterior pituitary gland, plays an important role in regulating reproductive processes. In this study, using the TargetScan program, we predicted that microRNAs (miRNAs) regulate FSH secretion. Dual-luciferase reporter assays were performed and identified miR-7a-5p. MiR-7a-5p has been reported to regulate diverse cellular functions. However, it is unclear whether miR-7a-5p binds to mRNAs and regulates reproductive functions. Therefore, we constructed a suspension of rat anterior pituitary cells and cultured them under adaptive conditions, transfected miR-7a-5p mimics or inhibitor into the cell suspension and detected expression of the FSHb gene. The results demonstrated that miR-7a-5p downregulated FSHb expression levels, while treatment with miR-7a-5p inhibitors upregulated FSHb expression levels relative to those of negative control groups, as shown by quantitative PCR analysis. The results were confirmed with a subsequent experiment showing that FSH secretion was reduced after treatment with mimics and increased in the inhibitor groups, as shown by enzyme-linked immunosorbent assay. Our results indicated that miR-7a-5p downregulates FSHb expression levels, resulting in decreased FSH synthesis and secretion, which demonstrates the important role of miRNAs in the regulation of FSH and animal reproduction.
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Affiliation(s)
- Chang-Jiang Wang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Hai-Xiang Guo
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Dong-Xu Han
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Ze-Wen Yu
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Yi Zheng
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Hao Jiang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Yan Gao
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Bao Yuan
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, China
| | - Jia-Bao Zhang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun, Jilin, China
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13
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Zhou R, Miao Y, Li Y, Li X, Xi J, Zhang Z. MicroRNA-150 promote apoptosis of ovine ovarian granulosa cells by targeting STAR gene. Theriogenology 2019; 127:66-71. [PMID: 30669067 DOI: 10.1016/j.theriogenology.2019.01.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 12/19/2018] [Accepted: 01/09/2019] [Indexed: 01/04/2023]
Abstract
To better understand the function of oar-miR-150 in the ovine granulosa cells (GCs) during the estrus cycle, the five turpan sheep were selected for detection of the expression of oar-miR-150 in follicular and luteal ovaries, respectively. Then the granulosa cells treated with oar-miR-150 mimics or negative control (NC) were analyzed by qPCR to assess the expression of genes involved in steroidogenic and apoptosis. Expression of oar-miR-150 was increased in follicular phase compared with that in luteal ovaries. STAR was a target gene of miR-150 with oar-miR-150 mimic or inhibitor and luciferase reporter assay. Overexpression of oar-miR-150 promoted expression of bax, bcl2 and Casp3 expression and declined the expression of STAR, Cyp11a1 and HSD3B1 in vitro. Taken together, these results demonstrate that the oar-miR-150 promote GCs apoptosis through modifying the expression of genes involved in progesterone synthesis.
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Affiliation(s)
- Rongyan Zhou
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, Hebei Province, 071001, China.
| | - Yanping Miao
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, Hebei Province, 071001, China
| | - Yimeng Li
- College of Basic Medical Science, Hebei Medical University, Shijiazhuang, Hebei, 050000, China
| | - Xiangyun Li
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, Hebei Province, 071001, China
| | - Jianzhong Xi
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, Hebei Province, 071001, China
| | - Zhenhong Zhang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, Hebei Province, 071001, China
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14
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Tu J, Cheung AHH, Chan CLK, Chan WY. The Role of microRNAs in Ovarian Granulosa Cells in Health and Disease. Front Endocrinol (Lausanne) 2019; 10:174. [PMID: 30949134 PMCID: PMC6437095 DOI: 10.3389/fendo.2019.00174] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/01/2019] [Indexed: 02/02/2023] Open
Abstract
The granulosa cell (GC) is a critical somatic component of the ovary. It is essential for follicle development by supporting the developing oocyte, proliferating and producing sex steroids and disparate growth factors. Knowledge of the GC's function in normal ovarian development and function, and reproductive disorders, such as polycystic ovary syndrome (PCOS) and premature ovarian failure (POF), is largely acquired through clinical studies and preclinical animal models. Recently, microRNAs have been recognized to play important regulatory roles in GC pathophysiology. Here, we examine the recent findings on the role of miRNAs in the GC, including four related signaling pathways (Transforming growth factor-β pathway, Follicle-stimulating hormones pathway, hormone-related miRNAs, Apoptosis-related pathways) and relevant diseases. Therefore, miRNAs appear to be important regulators of GC function in both physiological and pathological conditions. We suggest that targeting specific microRNAs is a potential therapeutic option for treating ovary-related diseases, such as PCOS, POF, and GCT.
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Affiliation(s)
- Jiajie Tu
- Institute of Clinical Pharmacology, Anhui Medical University, Anhui, China
- CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Albert Hoi-Hung Cheung
- CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | | | - Wai-Yee Chan
- CUHK-SDU Joint Laboratory on Reproductive Genetics, School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong
- *Correspondence: Wai-Yee Chan
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15
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Menon B, Guo X, Garcia N, Gulappa T, Menon KMJ. miR-122 Regulates LHR Expression in Rat Granulosa Cells by Targeting Insig1 mRNA. Endocrinology 2018; 159:2075-2082. [PMID: 29579170 PMCID: PMC5905391 DOI: 10.1210/en.2017-03270] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 03/13/2018] [Indexed: 11/19/2022]
Abstract
Luteinizing hormone/chorionic gonadotropin receptor (LHR) expression in the ovary is regulated by a messenger RNA (mRNA) binding protein, which specifically binds to the coding region of LHR mRNA. We have shown that miR-122, a short noncoding RNA, mediates LHR mRNA levels by modulating the expression of LHR mRNA-binding protein (LRBP) through the regulation of sterol regulatory element binding protein (SREBP) activation. The present results show that miR-122 regulates LRBP levels by increasing the processing of SREBP through the degradation of Insig1, the anchoring protein of SREBP. We present evidence showing that mRNA and protein levels of Insig1 undergo a time-dependent increase following the treatment of rat granulosa cells with follicle-stimulating hormone (FSH), which leads to a decrease in LRBP levels. Furthermore, overexpression of miR-122 using an adenoviral vector (AdmiR-122) abolished FSH-induced increases in Insig1 mRNA and protein. We further confirmed the role of Insig1 by showing that inhibition of Insig1 using a specific small interfering RNA prior to FSH treatment resulted in the abrogation of LHR upregulation. Silencing of Insig1 also reversed FSH-mediated decreases in SREBP and LRBP activation. These results show that decreased levels of miR-122 increase Insig1 and suppress SREBP processing in response to FSH stimulation of rat granulosa cells.
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Affiliation(s)
- Bindu Menon
- Department of Obstetrics/Gynecology, University of Michigan Medical School, Ann Arbor, Michigan
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan
- Correspondence: K. M. J. Menon, PhD, 6428 Medical Science Building I, 1150 West Medical Center Drive, University of Michigan Medical School, Ann Arbor, Michigan 48109. E-mail: ; or Bindu Menon, PhD, 6436 Medical Sciences Building 1, 1150 West Medical Center Drive, University of Michigan Medical School, Ann Arbor, Michigan 48109. E-mail:
| | - Xingzi Guo
- Department of Obstetrics/Gynecology, University of Michigan Medical School, Ann Arbor, Michigan
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan
| | - Natalia Garcia
- Department of Obstetrics/Gynecology, University of Michigan Medical School, Ann Arbor, Michigan
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan
| | - Thippeswamy Gulappa
- Department of Obstetrics/Gynecology, University of Michigan Medical School, Ann Arbor, Michigan
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan
| | - K M J Menon
- Department of Obstetrics/Gynecology, University of Michigan Medical School, Ann Arbor, Michigan
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan
- Correspondence: K. M. J. Menon, PhD, 6428 Medical Science Building I, 1150 West Medical Center Drive, University of Michigan Medical School, Ann Arbor, Michigan 48109. E-mail: ; or Bindu Menon, PhD, 6436 Medical Sciences Building 1, 1150 West Medical Center Drive, University of Michigan Medical School, Ann Arbor, Michigan 48109. E-mail:
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16
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Effect of superstimulation on the expression of microRNAs and genes involved in steroidogenesis and ovulation in Nelore cows. Theriogenology 2018; 110:192-200. [DOI: 10.1016/j.theriogenology.2017.12.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 11/16/2017] [Accepted: 12/30/2017] [Indexed: 12/11/2022]
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17
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Menon KMJ, Menon B, Gulappa T. Regulation of Luteinizing Hormone Receptor mRNA Expression in the Ovary: The Role of miR-122. VITAMINS AND HORMONES 2018; 107:67-87. [PMID: 29544643 DOI: 10.1016/bs.vh.2018.01.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The expression of luteinizing hormone receptor (LHR) in the mammalian ovary is regulated in response to changes in the secretion of follicle-stimulating hormone and luteinizing hormone by the anterior pituitary, at least in part, through posttranscriptional mechanisms. The steady-state levels of LHR mRNA are maintained by controlling its rate of degradation by an RNA-binding protein designated as LHR mRNA-binding protein (LRBP). LRBP forms a complex with LHR mRNA and targets it for degradation in the p bodies. miR-122, an 18 nucleotide noncoding RNA, regulates the expression of LRBP. Thus, the levels of miR-122 determine the cellular levels of LHR mRNA expression. This phenomenon has been examined during the induction of LHR mRNA expression that occurs during follicle maturation in response to rising levels of FSH. In this situation, miR-122 and LRBP levels decrease as LHR mRNA expression undergoes downregulation in response to preovulatory LH surge. miR-122 expression as well as LRBP levels show robust increases. The mechanism of induction of LRBP by miR-122 has also been discussed.
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Affiliation(s)
- K M J Menon
- The University of Michigan Medical School, Ann Arbor, MI, United States.
| | - Bindu Menon
- The University of Michigan Medical School, Ann Arbor, MI, United States
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18
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Gross N, Kropp J, Khatib H. Sexual Dimorphism of miRNAs Secreted by Bovine In vitro-produced Embryos. Front Genet 2017; 8:39. [PMID: 28421107 PMCID: PMC5378762 DOI: 10.3389/fgene.2017.00039] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 03/20/2017] [Indexed: 01/29/2023] Open
Abstract
Sexual dimorphism of bovine blastocysts has previously been observed through differences in development, cell death, metabolism, telomere length, DNA methylation, and transcriptomics. However, dimorphism in the secretion of miRNAs to culture media has not yet been evaluated. The objectives of this study were to determine if sex-specific blastocyst miRNA secretion occurs and to further investigate the role these miRNAs may have in the interaction between a blastocyst and the maternal environment. In vitro embryo culture was performed and media from male and female blastocysts was collected into sex-specific pools. Profiling of 68 miRNAs revealed a total of eight miRNAs that were differentially expressed between female and male-conditioned media. Validation by qPCR confirmed higher expression of miR-22 (P < 0.05), miR-122 (P < 0.05), and miR-320a (P < 0.05) in female media for three additional biological replicates. To examine the potential roles of secreted miRNAs to the media in communication with the maternal environment, miR-22, miR-122, and miR-320a were each supplemented to four replicates of primary bovine endometrial epithelial cell culture. Uptake of miR-122 (P < 0.05) and miR-320a (P < 0.05) was detected, and a trend of uptake was detected for miR-22 (P > 0.05). Further, expression of the progesterone receptor transcript, a predicted target of all three miRNAs, was found to be upregulated in the cells following supplementation of miR-122 (P < 0.05) and miR-320a (P < 0.05), and a trend upregulation of the transcript was observed following miR-22 (P > 0.05) supplementation. This work demonstrates that male and female conceptuses are able to differentially secrete miRNAs at the blastocyst stage and that these miRNAs have the ability to induce a transcriptomic response when applied to maternal cells. This knowledge builds on the known dimorphic differences in conceptuses at the blastocyst stage and demonstrates a role for blastocyst-secreted miRNAs in cell-cell communication.
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Affiliation(s)
- Nicole Gross
- Department of Animal Sciences, University of Wisconsin, MadisonWI, USA
| | - Jenna Kropp
- Department of Animal Sciences, University of Wisconsin, MadisonWI, USA
| | - Hasan Khatib
- Department of Animal Sciences, University of Wisconsin, MadisonWI, USA
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19
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Menon B, Gulappa T, Menon KMJ. Molecular regulation of LHCGR expression by miR-122 during follicle growth in the rat ovary. Mol Cell Endocrinol 2017; 442:81-89. [PMID: 27940300 PMCID: PMC5371357 DOI: 10.1016/j.mce.2016.12.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 12/05/2016] [Accepted: 12/05/2016] [Indexed: 12/30/2022]
Abstract
We have previously reported that LHCGR expression in the ovary is regulated through a post-transcriptional mechanism involving an mRNA binding protein designated as LRBP, which is regulated, at least in part, by a non-coding RNA, miR-122. Our present study examined the regulatory role of miR-122 in FSH-induced LHCGR expression during follicle development. Treatment of rat granulosa cells concurrently with FSH and 17β estradiol showed, as expected, a time-dependent increase in LHCGR mRNA levels as well as hCG-induced progesterone production. However, miR-122 expression was decreased during the early time periods, which preceded the increased expression of LHCGR mRNA. The role of miR-122 in FSH-induced LHCGR mRNA expression was then examined by overexpressing miR-122 prior to FSH stimulation by infecting granulosa cells with an adenoviral vector containing a miR-122 insert (AdmiR-122). Pretreatment with AdmiR-122 resulted in complete abrogation of FSH- mediated upregulation of LHCGR. AdmiR-122 also blocked FSH-induced decrease in LRBP expression and increased the binding of LHCGR mRNA to LRBP. Based on these results, we conclude that miR-122 plays a regulatory role in LHCGR expression by modulating LRBP levels during FSH-induced follicle growth.
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Affiliation(s)
- Bindu Menon
- Departments of Obstetrics/Gynecology and Biological Chemistry, University of Michigan Medical School, Ann Arbor, MI, 48109-0617, USA
| | - Thippeswamy Gulappa
- Departments of Obstetrics/Gynecology and Biological Chemistry, University of Michigan Medical School, Ann Arbor, MI, 48109-0617, USA
| | - K M J Menon
- Departments of Obstetrics/Gynecology and Biological Chemistry, University of Michigan Medical School, Ann Arbor, MI, 48109-0617, USA.
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20
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Toms D, Pan B, Li J. Endocrine Regulation in the Ovary by MicroRNA during the Estrous Cycle. Front Endocrinol (Lausanne) 2017; 8:378. [PMID: 29403434 PMCID: PMC5786742 DOI: 10.3389/fendo.2017.00378] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 12/22/2017] [Indexed: 12/19/2022] Open
Abstract
Hormonal control of the estrous cycle that occurs in therian mammals is essential for the production of a functional egg. Supporting somatic cell types found within the ovary, such as granulosa and theca cells, respond to endocrine signals to support oocyte maturation and ovulation. Following the release of the egg, now available for fertilization, coordinated hormonal signaling between the mother and putative embryo are required for the establishment of pregnancy. If no conception occurs, both the ovary and uterus are "reset" in preparation for another cycle. The complex molecular changes that occur within cells in response to hormone signaling include a network of non-coding microRNAs (miRNAs) that posttranscriptionally regulate gene expression. They are thus able to fine-tune cellular responses to hormones and confer robustness in gene regulation. In this review, we outline the important roles established for miRNAs in regulating female reproductive hormone signaling during estrus, with a particular focus on signaling pathways in the ovary. Understanding this miRNA network can provide important insights to improving assisted reproductive technologies and may be useful in the diagnosis of female reproductive disorders.
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Affiliation(s)
- Derek Toms
- Faculty of Veterinary Medicine, Department of Comparative Biology and Experimental Medicine, University of Calgary, Calgary, AB, Canada
| | - Bo Pan
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada
| | - Julang Li
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada
- College of Life Science and Engineering, Foshan University, Foshan, China
- *Correspondence: Julang Li,
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