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Plewes MR, Talbott HA, Schott MB, Wood JR, Cupp AS, Davis JS. Unraveling the role of lipid droplets and perilipin 2 in bovine luteal cells. FASEB J 2024; 38:e23710. [PMID: 38822676 DOI: 10.1096/fj.202400260rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/23/2024] [Accepted: 05/16/2024] [Indexed: 06/03/2024]
Abstract
Steroidogenic tissues contain cytosolic lipid droplets that are important for steroidogenesis. Perilipin 2 (PLIN2), a structural coat protein located on the surface of lipid droplets in mammalian cells, plays a crucial role in regulating lipid droplet formation and contributing to various cellular processes such as lipid storage and energy homeostasis. Herein, we examine the role that PLIN2 plays in regulating progesterone synthesis in the bovine corpus luteum. Utilizing gene array databases and Western blotting, we have delineated the expression pattern of PLIN2 throughout the follicular to luteal transition. Our findings reveal the presence of PLIN2 in both ovarian follicular and steroidogenic luteal cells, demonstrating an increase in its levels as follicular cells transition into the luteal phase. Moreover, the depletion of PLIN2 via siRNA enhanced progesterone production in small luteal cells, whereas adenovirus-mediated overexpression of both PLIN2 and Perilipin 3 (PLIN3) induced an increase in cytosolic lipid droplet accumulation and decreased hormone-induced progesterone synthesis in these cells. Lastly, in vivo administration of the luteolytic hormone prostaglandin F2α resulted in an upregulation of PLIN2 mRNA and protein expression, accompanied by a decline in serum progesterone. Our findings highlight the pivotal role of PLIN2 in regulating progesterone synthesis in the bovine corpus luteum, as supported by its dynamic expression pattern during the follicular to luteal transition and its responsiveness to luteotropic and luteolytic hormones. We suggest PLIN2 as a potential therapeutic target for modulating luteal function.
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Affiliation(s)
- Michele R Plewes
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, Nebraska, USA
- Veterans Affairs Nebraska Western Iowa Health Care System, Omaha, Nebraska, USA
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Heather A Talbott
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Micah B Schott
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Jennifer R Wood
- Department of Animal Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Andrea S Cupp
- Department of Animal Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - John S Davis
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, Nebraska, USA
- Veterans Affairs Nebraska Western Iowa Health Care System, Omaha, Nebraska, USA
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska, USA
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Plewes MR, Talbott HA, Saviola AJ, Woods NT, Schott MB, Davis JS. Luteal Lipid Droplets: A Novel Platform for Steroid Synthesis. Endocrinology 2023; 164:bqad124. [PMID: 37586092 PMCID: PMC10445418 DOI: 10.1210/endocr/bqad124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 08/08/2023] [Accepted: 08/10/2023] [Indexed: 08/18/2023]
Abstract
Progesterone is an essential steroid hormone that is required to initiate and maintain pregnancy in mammals and serves as a metabolic intermediate in the synthesis of endogenously produced steroids, including sex hormones and corticosteroids. Steroidogenic luteal cells of the corpus luteum have the tremendous capacity to synthesize progesterone. These specialized cells are highly enriched with lipid droplets that store lipid substrate, which can be used for the synthesis of steroids. We recently reported that hormone-stimulated progesterone synthesis by luteal cells requires protein kinase A-dependent mobilization of cholesterol substrate from lipid droplets to mitochondria. We hypothesize that luteal lipid droplets are enriched with steroidogenic enzymes and facilitate the synthesis of steroids in the corpus luteum. In the present study, we analyzed the lipid droplet proteome, conducted the first proteomic analysis of lipid droplets under acute cyclic adenosine monophosphate (cAMP)-stimulated conditions, and determined how specific lipid droplet proteins affect steroidogenesis. Steroidogenic enzymes, cytochrome P450 family 11 subfamily A member 1 and 3 beta-hydroxysteroid dehydrogenase (HSD3B), were highly abundant on lipid droplets of the bovine corpus luteum. High-resolution confocal microscopy confirmed the presence of active HSD3B on the surface of luteal lipid droplets. We report that luteal lipid droplets have the capacity to synthesize progesterone from pregnenolone. Lastly, we analyzed the lipid droplet proteome following acute stimulation with cAMP analog, 8-Br-cAMP, and report increased association of HSD3B with luteal lipid droplets following stimulation. These findings provide novel insights into the role of luteal lipid droplets in steroid synthesis.
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Affiliation(s)
- Michele R Plewes
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center,Omaha, NE 68198-3255, USA
- Department of Research Services, Veterans Affairs Nebraska Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center,Omaha, NE 68198-5870, USA
| | - Heather A Talbott
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center,Omaha, NE 68198-3255, USA
| | - Anthony J Saviola
- Department of Biochemistry and Molecular Genetics, University of Colorado, Aurora, CO 80045USA
| | - Nicholas T Woods
- Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, Omaha, NE 68198-6805, USA
| | - Micah B Schott
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center,Omaha, NE 68198-5870, USA
| | - John S Davis
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center,Omaha, NE 68198-3255, USA
- Department of Research Services, Veterans Affairs Nebraska Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center,Omaha, NE 68198-5870, USA
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Plewes MR, Przygrodzka E, Monaco CF, Snider AP, Keane JA, Burns PD, Wood JR, Cupp AS, Davis JS. Prostaglandin F2α regulates mitochondrial dynamics and mitophagy in the bovine corpus luteum. Life Sci Alliance 2023; 6:e202301968. [PMID: 37188480 PMCID: PMC10185813 DOI: 10.26508/lsa.202301968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/17/2023] Open
Abstract
Prostaglandins are arachidonic acid-derived lipid mediators involved in numerous physiological and pathological processes. PGF2α analogues are therapeutically used for regulating mammalian reproductive cycles and blood pressure, inducing term labor, and treating ocular disorders. PGF2α exerts effects via activation of calcium and PKC signaling, however, little is known about the cellular events imposed by PGF2α signaling. Here, we explored the early effects of PGF2α on mitochondrial dynamics and mitophagy in the bovine corpus luteum employing relevant and well characterized in vivo and in vitro approaches. We identified PKC/ERK and AMPK as critical protein kinases essential for activation of mitochondrial fission proteins, DRP1 and MFF. Furthermore, we report that PGF2α elicits increased intracellular reactive oxygen species and promotes receptor-mediated activation of PINK-Parkin mitophagy. These findings place the mitochondrium as a novel target in response to luteolytic mediator, PGF2α. Understanding intracellular processes occurring during early luteolysis may serve as a target for improving fertility.
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Affiliation(s)
- Michele R Plewes
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Nebraska Medical Center, Omaha, NE, USA
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Nebraska Medical Center, Omaha, NE, USA
- U.S Department of Veterans Affairs Nebraska Western Iowa Health Care System, Omaha, NE, USA
| | - Emilia Przygrodzka
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Nebraska Medical Center, Omaha, NE, USA
| | - Corrine F Monaco
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Nebraska Medical Center, Omaha, NE, USA
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Nebraska Medical Center, Omaha, NE, USA
| | - Alexandria P Snider
- Department of Animal Sciences, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Jessica A Keane
- Department of Animal Sciences, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Patrick D Burns
- Department of Biological Sciences, University of Northern Colorado, Greeley, CO, USA
| | - Jennifer R Wood
- Department of Animal Sciences, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Andrea S Cupp
- Department of Animal Sciences, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - John S Davis
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Nebraska Medical Center, Omaha, NE, USA
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Nebraska Medical Center, Omaha, NE, USA
- U.S Department of Veterans Affairs Nebraska Western Iowa Health Care System, Omaha, NE, USA
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Rapp K, Wei S, Roberts M, Yao S, Fei SS, Gao L, Ray K, Wang A, Godiah R, Han L. Transcriptional profiling of mucus production and modification in rhesus macaque endocervical cells under hormonal regulation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.18.541362. [PMID: 37292621 PMCID: PMC10245652 DOI: 10.1101/2023.05.18.541362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective Endocervical mucus production is a key regulator of fertility throughout the menstrual cycle. With cycle-dependent variability in mucus quality and quantity, cervical mucus can either facilitate or block sperm ascension into the upper female reproductive tract. This study seeks to identify genes involved in the hormonal regulation of mucus production, modification, and regulation through profiling the transcriptome of endocervical cells from the non-human primate, the Rhesus Macaque (Macaca mulatta). Design Experimental. Setting Translational science laboratory. Intervention We treated differentiated primary endocervical cultures with estradiol (E2) and progesterone (P4) to mimic peri-ovulatory and luteal-phase hormonal changes. Using RNA-sequencing, we identified differential expression of gene pathways and mucus producing and modifying genes in cells treated with E2 compared to hormone-free conditions and E2 compared to E2-primed cells treated with P4. Main Outcome Measures We pursued differential gene expression analysis on RNA-sequenced cells. Sequence validation was done using qPCR. Results Our study identified 158 genes that show significant differential expression in E2-only conditions compared to hormone-free control, and 250 genes that show significant differential expression in P4-treated conditions compared to E2-only conditions. From this list, we found hormone-induced changes in transcriptional profiles for genes across several classes of mucus production, including ion channels and enzymes involved in post-translational mucin modification that have not previously been described as hormonally regulated. Conclusion Our study is the first to use an in vitro culture system to create an epithelial-cell specific transcriptome of the endocervix. As a result, our study identifies new genes and pathways that are altered by sex-steroids in cervical mucus production.
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Pei X, Li H, Yu H, Wang W, Mao D. APN Expression in Serum and Corpus Luteum: Regulation of Luteal Steroidogenesis Is Possibly Dependent on the AdipoR2/AMPK Pathway in Goats. Cells 2023; 12:1393. [PMID: 37408227 DOI: 10.3390/cells12101393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/23/2023] [Accepted: 05/09/2023] [Indexed: 07/07/2023] Open
Abstract
Adiponectin (APN) is an essential adipokine for a variety of reproductive processes. To investigate the role of APN in goat corpora lutea (CLs), CLs and sera from different luteal phases were collected for analysis. The results showed that the APN structure and content had no significant divergence in different luteal phases both in CLs and sera; however, high molecular weight APN was dominant in serum, while low molecular weight APN was more present in CLs. The luteal expression of both AdipoR1/2 and T-cadherin (T-Ca) increased on D11 and 17. APN and its receptors (AdipoR1/2 and T-Ca) were mainly expressed in goat luteal steroidogenic cells. The steroidogenesis and APN structure in pregnant CLs had a similar model as in the mid-cycle CLs. To further explore the effects and mechanisms of APN in CLs, steroidogenic cells from pregnant CLs were isolated to detect the AMPK-mediated pathway by the activation of APN (AdipoRon) and knockdown of APN receptors. The results revealed that P-AMPK in goat luteal cells increased after incubation with APN (1 μg/mL) or AdipoRon (25 μM) for 1 h, and progesterone (P4) and steroidogenic proteins levels (STAR/CYP11A1/HSD3B) decreased after 24 h. APN did not affect the steroidogenic protein expression when cells were pretreated with Compound C or SiAMPK. APN increased P-AMPK and reduced the CYP11A1 expression and P4 levels when cells were pretreated with SiAdipoR1 or SiT-Ca, while APN failed to affect P-AMPK, the CYP11A1 expression or the P4 levels when pretreated with SiAdipoR2. Therefore, the different structural forms of APN in CLs and sera may possess distinct functions; APN might regulate luteal steroidogenesis through AdipoR2 which is most likely dependent on AMPK.
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Affiliation(s)
- Xiaomeng Pei
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Haolin Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Hao Yu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Dagan Mao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
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Dual role of NR4A1 in porcine ovarian granulosa cell differentiation and granulosa-lutein cell regression in vitro. Theriogenology 2023; 198:292-304. [PMID: 36634443 DOI: 10.1016/j.theriogenology.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 12/31/2022] [Accepted: 01/02/2023] [Indexed: 01/05/2023]
Abstract
This study aimed to investigate the role of NR4A1 in forskolin (FSK)-induced granulosa cell (GC) differentiation and PGF2α-induced granulosa-lutein cell (GLC) regression. For experiment 1, primary porcine GCs were pre-cultured for 6 d before induced-differentiation by FSK with or without siNR4A1, and changes in GC proliferation, lipid droplets (LDs), and P4 level were detected. For experiment 2, the GLC model was established by FSK as in experiment 1, and then PGF2α was utilized to induce GLC regression with or without siNR4A1, changes in P4 secretion, apoptosis proteins, and associated signaling pathway members were detected. Results showed that in experiment 1, FSK up-regulated NR4A1 expression during GC differentiation and decreased GC proliferation activity, which was reversed by siNR4A1. siNR4A1 inhibited the FSK-induced decreases in Cyclin B1/D1 and CDK1/2 mRNA abundances, and increases in P21/P27 mRNA abundances, and FSK-induced LD accumulation. FSK up-regulated P4 secretion and StAR, CYP11A1 and HSD3B expression, decreased CYP19A1 expression, which were reversed by siNR4A1 except for StAR expression. In experiment 2, PGF2α induced NR4A1 expression and reduced GLC viability, which were reversed by siNR4A1. Compared with PGF2α group, the levels of P4 secretion and StAR expression were higher in PGF2α+siNR4A1 group, while CYP11A1 and HSD3B expressions held at low levels. siNR4A1 inhibited PGF2α-induced expression of apoptosis proteins (caspase3, Bax, Fas, TNFa), ATF3, and phosphorylated MAPKs (ERK1/2, P38, JNK). In summary, NR4A1 is involved in regulating porcine GC differentiation and GLC regression as well as the changes in cell proliferation, apoptosis, steroidogenesis, and MAPK pathways, which provide a theoretical basis for further understanding of the mechanism of porcine luteal formation and regression.
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Mezera MA, Li W, Liu L, Meidan R, Peñagaricano F, Wiltbank MC. Effect of natural pre-luteolytic prostaglandin F2α pulses on the bovine luteal transcriptome during spontaneous luteal regression. Biol Reprod 2021; 105:1016-1029. [PMID: 34170313 DOI: 10.1093/biolre/ioab123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 06/03/2021] [Accepted: 06/20/2021] [Indexed: 01/14/2023] Open
Abstract
The pulsatile pattern of prostaglandin F2alpha (PGF) secretion during spontaneous luteolysis is well-documented, with multiple pulses of exogenous PGF necessary to induce regression using physiologic concentrations of PGF. However, during spontaneous regression, the earliest pulses of PGF are small and not associated with detectable changes in circulating progesterone (P4), bringing into question what, if any, role these early, subluteolytic PGF pulses have during physiologic regression. To investigate the effect of small PGF pulses, luteal biopsies were collected throughout natural luteolysis in conjunction with bihourly blood samples to determine circulating P4 and PGF metabolite to retrospectively assign biopsies to early and later regression. Whole transcriptome analysis was conducted on CL biopsies. Early PGF pulses altered the luteal transcriptome, inducing differential expression of 210 genes (Q < 0.05) during early regression, compared to 4615 differentially expressed genes during later regression. In early regression, few of these differentially expressed genes were directly associated with luteolysis, rather there were changes in local steroid and glutathione metabolism. Most (94%) differentially expressed genes from early regression were also differentially expressed during later regression, with 98% of these continuing to be altered in the same direction compared to CL at a similar stage of the cycle that had not yet been exposed to PGF. Thus, early, subluteolytic PGF pulses impact the luteal transcriptome, though not by altering steroidogenesis or causing direct inhibition of cellular function. Rather, small pulses alter pathways resulting in removal of cellular support systems, which may sensitize the CL to later pulses of PGF.
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Affiliation(s)
- Megan A Mezera
- Department of Animal & Dairy Sciences and 2Endocrinology and Reproductive Physiology Program, University of Wisconsin-Madison, Madison, WI 53706, USA.,USDA Dairy Forage Research Center, Madison, WI 53706, USA
| | - Wenli Li
- USDA Dairy Forage Research Center, Madison, WI 53706, USA
| | - Lihe Liu
- Department of Animal & Dairy Sciences and 2Endocrinology and Reproductive Physiology Program, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Rina Meidan
- Department of Animal Sciences, The Hebrew University of Jerusalem
| | - Francisco Peñagaricano
- Department of Animal & Dairy Sciences and 2Endocrinology and Reproductive Physiology Program, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Milo C Wiltbank
- Department of Animal & Dairy Sciences and 2Endocrinology and Reproductive Physiology Program, University of Wisconsin-Madison, Madison, WI 53706, USA
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Punetha M, Kumar S, Paul A, Jose B, Bharati J, Sonwane A, Green JA, Whitworth K, Sarkar M. Deciphering the functional role of EGR1 in Prostaglandin F2 alpha induced luteal regression applying CRISPR in corpus luteum of buffalo. Biol Res 2021; 54:9. [PMID: 33712084 PMCID: PMC7953609 DOI: 10.1186/s40659-021-00333-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 03/03/2021] [Indexed: 12/19/2022] Open
Abstract
Background PGF2α is essential for the induction of the corpus luteum regression which in turn reduces progesterone production. Early growth response (EGR) proteins are Cys2-His2-type zinc-finger transcription factor that are strongly linked to cellular proliferation, survival and apoptosis. Rapid elevation of EGR1 was observed after luteolytic dose of PGF2α. EGR1 is involved in the transactivation of many genes, including TGFβ1, which plays an important role during luteal regression. Methods The current study was conducted in buffalo luteal cells with the aim to better understand the role of EGR1 in transactivation of TGFβ1 during PGF2α induced luteal regression. Luteal cells from mid stage corpus luteum of buffalo were cultured and treated with different doses of PGF2α for different time durations. Relative expression of mRNAs encoding for enzymes within the progesterone biosynthetic pathway (3βHSD, CYP11A1 and StAR); Caspase 3; AKT were analyzed to confirm the occurrence of luteolytic event. To determine if EGR1 is involved in the PGF2α induced luteal regression via induction of TGFβ1 expression, we knocked out the EGR1 gene by using CRISPR/Cas9. Result The present experiment determined whether EGR1 protein expression in luteal cells was responsive to PGF2α treatment. Quantification of EGR1 and TGFβ1 mRNA showed significant up regulation in luteal cells of buffalo at 12 h post PGF2α induction. In order to validate the role of PGF2α on stimulating the expression of TGFβ1 by an EGR1 dependent mechanism we knocked out EGR1. The EGR1 ablated luteal cells were stimulated with PGF2α and it was observed that EGR1 KO did not modulate the PGF2α induced expression of TGFβ1. In PGF2α treated EGR1 KO luteal cell, the mRNA expression of Caspase 3 was significantly increased compared to PGF2α treated wild type luteal cells maintained for 12 h. We also studied the influence of EGR1 on steroidogenesis. The EGR1 KO luteal cells with PGF2α treatment showed no substantial difference either in the progesterone concentration or in StAR mRNA expression with PGF2α-treated wild type luteal cells. Conclusion These results suggest that EGR1 signaling is not the only factor which plays a role in the regulation of PGF2α induced TGFβ1 signaling for luteolysis.
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Affiliation(s)
- Meeti Punetha
- Physiology & Climatology Division, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India.
| | - Sai Kumar
- Physiology & Climatology Division, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
| | - Avishek Paul
- Physiology & Climatology Division, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
| | - Bosco Jose
- Physiology & Climatology Division, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
| | - Jaya Bharati
- Animal Physiology, ICAR-National Research Centre on Pig, Guwahati, Assam, India
| | - Arvind Sonwane
- Division of Animal Genetics, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
| | - Jonathan A Green
- Division of Animal Science, University of Missouri-Columbia, Columbia, MO, USA
| | - Kristin Whitworth
- Division of Animal Science, University of Missouri-Columbia, Columbia, MO, USA
| | - Mihir Sarkar
- Physiology & Climatology Division, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243122, India
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Liang A, Plewes MR, Hua G, Hou X, Blum HR, Przygrodzka E, George JW, Clark KL, Bousfield GR, Butnev VY, May JV, Davis JS. Bioactivity of recombinant hFSH glycosylation variants in primary cultures of porcine granulosa cells. Mol Cell Endocrinol 2020; 514:110911. [PMID: 32553947 PMCID: PMC7418035 DOI: 10.1016/j.mce.2020.110911] [Citation(s) in RCA: 6] [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: 05/08/2020] [Revised: 06/05/2020] [Accepted: 06/05/2020] [Indexed: 12/16/2022]
Abstract
Previous studies have reported hypo-glycosylated FSH and fully-glycosylated FSH to be naturally occurring in humans, and these glycoforms exist in changing ratios over a woman's lifespan. The precise cellular and molecular effects of recombinant human FSH (hFSH) glycoforms, FSH21 and FSH24, have not been documented in primary granulosa cells. Herein, biological responses to FSH21 and FSH24 were compared in primary porcine granulosa cells. Hypo-glycosylated hFSH21 was significantly more effective than fully-glycosylated hFSH24 at stimulating cAMP accumulation and protein kinase A (PKA) activity, leading to the higher phosphorylation of CREB and β-Catenin. Compared to fully-glycosylated hFSH24, hypo-glycosylated hFSH21 also induced greater levels of transcripts for HSD3B, STAR and INHA, and higher progesterone production. Our results demonstrate that hypo-glycosylated hFSH21 exerts more robust activation of intracellular signals associated with steroidogenesis than fully-glycosylated hFSH24 in primary porcine granulosa cells, and furthers our understanding of the differing bioactivities of FSH glycoforms in the ovary.
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Affiliation(s)
- Aixin Liang
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Michele R Plewes
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Veterans Affairs Nebraska Western Iowa Health Care System, 4101 Woolworth Ave, Omaha, NE, 68105, USA
| | - Guohua Hua
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiaoying Hou
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Haley R Blum
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Emilia Przygrodzka
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Jitu W George
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Veterans Affairs Nebraska Western Iowa Health Care System, 4101 Woolworth Ave, Omaha, NE, 68105, USA
| | - Kendra L Clark
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Veterans Affairs Nebraska Western Iowa Health Care System, 4101 Woolworth Ave, Omaha, NE, 68105, USA
| | - George R Bousfield
- Department of Biological Sciences, Wichita State University, Wichita, KS, 67260, USA
| | - Viktor Y Butnev
- Department of Biological Sciences, Wichita State University, Wichita, KS, 67260, USA
| | - Jeffrey V May
- Department of Biological Sciences, Wichita State University, Wichita, KS, 67260, USA
| | - John S Davis
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Veterans Affairs Nebraska Western Iowa Health Care System, 4101 Woolworth Ave, Omaha, NE, 68105, USA.
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10
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Plewes MR, Krause C, Talbott HA, Przygrodzka E, Wood JR, Cupp AS, Davis JS. Trafficking of cholesterol from lipid droplets to mitochondria in bovine luteal cells: Acute control of progesterone synthesis. FASEB J 2020; 34:10731-10750. [PMID: 32614098 PMCID: PMC7868007 DOI: 10.1096/fj.202000671r] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/28/2020] [Accepted: 06/02/2020] [Indexed: 01/09/2023]
Abstract
The corpus luteum is a transient endocrine gland that synthesizes and secretes the steroid hormone, progesterone, which is vital for establishment and maintenance of pregnancy. Luteinizing hormone (LH) via activation of protein kinase A (PKA) acutely stimulates luteal progesterone synthesis via a complex process, converting cholesterol via a series of enzymatic reactions, into progesterone. Lipid droplets in steroidogenic luteal cells store cholesterol in the form of cholesterol esters, which are postulated to provide substrate for steroidogenesis. Early enzymatic studies showed that hormone sensitive lipase (HSL) hydrolyzes luteal cholesterol esters. In this study, we tested whether HSL is a critical mediator of the acute actions of LH on luteal progesterone production. Using LH-responsive bovine small luteal cells our results reveal that LH, forskolin, and 8-Br cAMP-induced PKA-dependent phosphorylation of HSL at Ser563 and Ser660, events known to promote HSL activity. Small molecule inhibition of HSL activity and siRNA-mediated knock down of HSL abrogated LH-induced progesterone production. Moreover, western blotting and confocal microscopy revealed that LH stimulates phosphorylation and translocation of HSL to lipid droplets. Furthermore, LH increased trafficking of cholesterol from the lipid droplets to the mitochondria, which was dependent on both PKA and HSL activation. Taken together, these findings identify a PKA/HSL signaling pathway in luteal cells in response to LH and demonstrate the dynamic relationship between PKA, HSL, and lipid droplets in luteal progesterone synthesis.
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Affiliation(s)
- Michele R. Plewes
- Olson Center for Women’s Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA
- Veterans Affairs Nebraska Western Iowa Health Care System, 4101 Woolworth Ave, Omaha, NE 68105, USA
| | - Crystal Krause
- Olson Center for Women’s Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA
| | - Heather A. Talbott
- Olson Center for Women’s Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA
| | - Emilia Przygrodzka
- Olson Center for Women’s Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA
| | - Jennifer R. Wood
- Department of Animal Sciences, ANSC A224k, University of Nebraska–Lincoln, Lincoln, NE 68583-0908, USA
| | - Andrea S. Cupp
- Department of Animal Sciences, ANSC A224k, University of Nebraska–Lincoln, Lincoln, NE 68583-0908, USA
| | - John S. Davis
- Olson Center for Women’s Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA
- Veterans Affairs Nebraska Western Iowa Health Care System, 4101 Woolworth Ave, Omaha, NE 68105, USA
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11
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Talbott HA, Plewes MR, Krause C, Hou X, Zhang P, Rizzo WB, Wood JR, Cupp AS, Davis JS. Formation and characterization of lipid droplets of the bovine corpus luteum. Sci Rep 2020; 10:11287. [PMID: 32647143 PMCID: PMC7347867 DOI: 10.1038/s41598-020-68091-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 06/18/2020] [Indexed: 12/21/2022] Open
Abstract
Establishment and maintenance of pregnancy depends on progesterone synthesized by luteal tissue in the ovary. Our objective was to identify the characteristics of lipid droplets (LDs) in ovarian steroidogenic cells. We hypothesized that LDs are a major feature of steroidogenic luteal cells and store cholesteryl esters. Whole bovine tissues, isolated ovarian steroidogenic cells (granulosa, theca, small luteal, and large luteal), and isolated luteal LDs were assessed for LD content, LD-associated proteins and lipid analyses. Bovine luteal tissue contained abundant lipid droplets, LD-associated perilipins 2/3/5, hormone-sensitive lipase, and 1-acylglycerol-3-phosphate O-acyltransferase ABHD5. Luteal tissue was enriched in triglycerides (TGs) compared to other tissues, except for adipose tissue. Luteal cells were distinguishable from follicular cells by the presence of LDs, LD-associated proteins, and increased TGs. Furthermore, LDs from large luteal cells were numerous and small; whereas, LDs from small luteal cells were large and less numerous. Isolated LDs contained nearly all of the TGs and cholesteryl esters present in luteal tissue. Isolated luteal LDs were composed primarily of TG, with lesser amounts of cholesteryl esters, diglyceride and other phospholipids. Bovine luteal LDs are distinct from LDs in other bovine tissues, including follicular steroidogenic cells.
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Affiliation(s)
- Heather A Talbott
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, 68198-9450, USA.,Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA.,Division of Reproductive and Developmental Sciences, Oregon Health Sciences University/Oregon National Primate Research Center, Beaverton, OR, 97006, USA
| | - Michele R Plewes
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, 68198-9450, USA.,Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
| | - Crystal Krause
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, 68198-9450, USA.,Surgery Department, University of Nebraska Medical Center, Omaha, NE, 68198-3280, USA
| | - Xiaoying Hou
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, 68198-9450, USA
| | - Pan Zhang
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, 68198-9450, USA
| | - William B Rizzo
- Department of Pediatrics, University of Nebraska Medical Center, Omaha, NE, 68198-5940, USA
| | - Jennifer R Wood
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE, 68583-0908, USA
| | - Andrea S Cupp
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE, 68583-0908, USA
| | - John S Davis
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, 68198-9450, USA. .,Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA. .,Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA.
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12
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Plewes MR, Hou X, Talbott HA, Zhang P, Wood JR, Cupp AS, Davis JS. Luteinizing hormone regulates the phosphorylation and localization of the mitochondrial effector dynamin-related protein-1 (DRP1) and steroidogenesis in the bovine corpus luteum. FASEB J 2020; 34:5299-5316. [PMID: 32077149 DOI: 10.1096/fj.201902958r] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 02/04/2020] [Accepted: 02/04/2020] [Indexed: 12/31/2022]
Abstract
The corpus luteum is an endocrine gland that synthesizes and secretes progesterone. Luteinizing hormone (LH) activates protein kinase A (PKA) signaling in luteal cells, increasing delivery of substrate to mitochondria for progesterone production. Mitochondria maintain a highly regulated equilibrium between fusion and fission in order to sustain biological function. Dynamin-related protein 1 (DRP1), is a key mediator of mitochondrial fission. The mechanism by which DRP1 is regulated in the ovary is largely unknown. We hypothesize that LH via PKA differentially regulates the phosphorylation of DRP1 on Ser616 and Ser637 in bovine luteal cells. In primary cultures of steroidogenic small luteal cells (SLCs), LH, and forskolin stimulated phosphorylation of DRP1 (Ser 637), and inhibited phosphorylation of DRP1 (Ser 616). Overexpression of a PKA inhibitor blocked the effects of LH and forskolin on DRP1 phosphorylation. In addition, LH decreased the association of DRP1 with the mitochondria. Genetic knockdown of the DRP1 mitochondria receptor, and a small molecule inhibitor of DRP1 increased basal and LH-induced progesterone production. Studies with a general Dynamin inhibitor and siRNA knockdown of DRP1 showed that DRP1 is required for optimal LH-induced progesterone biosynthesis. Taken together, the findings place DRP1 as an important target downstream of PKA in steroidogenic luteal cells.
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Affiliation(s)
- Michele R Plewes
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, 68198-3255, NE, USA.,Nebraska Western Iowa Veterans Health Care System, Omaha, NE, USA
| | - Xiaoying Hou
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, 68198-3255, NE, USA
| | - Heather A Talbott
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, 68198-3255, NE, USA
| | - Pan Zhang
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, 68198-3255, NE, USA
| | - Jennifer R Wood
- Department of Animal Sciences, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Andrea S Cupp
- Department of Animal Sciences, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - John S Davis
- Olson Center for Women's Health, Department of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, 68198-3255, NE, USA.,Nebraska Western Iowa Veterans Health Care System, Omaha, NE, USA
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13
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Plewes MR, Hou X, Zhang P, Liang A, Hua G, Wood JR, Cupp AS, Lv X, Wang C, Davis JS. Yes-associated protein 1 is required for proliferation and function of bovine granulosa cells in vitro†. Biol Reprod 2019; 101:1001-1017. [PMID: 31350850 PMCID: PMC6877782 DOI: 10.1093/biolre/ioz139] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 05/28/2019] [Accepted: 06/25/2019] [Indexed: 02/07/2023] Open
Abstract
Yes-associated protein 1 (YAP1) is a major component of the Hippo signaling pathway. Although the exact extracellular signals that control the Hippo pathway are currently unknown, increasing evidence supports a critical role for the Hippo pathway in embryonic development, regulation of organ size, and carcinogenesis. Granulosa cells (GCs) within the ovarian follicle proliferate and produce steroids and growth factors, which facilitate the growth of follicle and maturation of the oocyte. We hypothesize that YAP1 plays a role in proliferation and estrogen secretion of GCs. In the current study, we examined the expression of the Hippo signaling pathway in bovine ovaries and determined whether it was important for GC proliferation and estrogen production. Mammalian STE20-like protein kinase 1 (MST1) and large tumor suppressor kinase 2 (LATS2) were identified as prominent upstream components of the Hippo pathway expressed in granulosa and theca cells of the follicle and large and small cells of the corpus luteum. Immunohistochemistry revealed that YAP1 was localized to the nucleus of growing follicles. In vitro, nuclear localization of the downstream Hippo signaling effector proteins YAP1 and transcriptional co-activator with PDZ-binding motif (TAZ) was inversely correlated with GC density, with greater nuclear localization under conditions of low cell density. Treatment with verteporfin and siRNA targeting YAP1 or TAZ revealed a critical role for these transcriptional co-activators in GC proliferation. Furthermore, knockdown of YAP1 in GCs inhibited follicle-stimulating hormone (FSH)-induced estradiol biosynthesis. The data indicate that Hippo pathway transcription co-activators YAP1/TAZ play an important role in GC proliferation and estradiol synthesis, two processes necessary for maintaining normal follicle development.
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Affiliation(s)
- Michele R Plewes
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, USA
- Veterans Affairs Nebraska Western Iowa Health Care System, Omaha, NE, USA
| | - Xiaoying Hou
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, USA
| | - Pan Zhang
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, USA
| | - Aixin Liang
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, USA
- College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Guohua Hua
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, USA
- College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jennifer R Wood
- Department of Animal Sciences, University of Nebraska–Lincoln, Lincoln, NE, USA
| | - Andrea S Cupp
- Department of Animal Sciences, University of Nebraska–Lincoln, Lincoln, NE, USA
| | - Xiangmin Lv
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, USA
| | - Cheng Wang
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, USA
| | - John S Davis
- Department of Obstetrics and Gynecology, Olson Center for Women's Health, University of Nebraska Medical Center, Omaha, NE, USA
- Veterans Affairs Nebraska Western Iowa Health Care System, Omaha, NE, USA
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14
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The involvement of NR4A1 and NR4A2 in the regulation of the luteal function in rats. Acta Histochem 2018; 120:713-719. [PMID: 30097186 DOI: 10.1016/j.acthis.2018.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 07/29/2018] [Accepted: 07/30/2018] [Indexed: 11/23/2022]
Abstract
The nuclear receptor 4A (NR4A) members play important roles in cellular proliferation, differentiation and apoptosis. The current study first evaluate the expression of ovarian NR4A1 during different luteal stages in rats. Immature rats aged 28 days were treated with sequential Pregnant mare serum gonadotropin (PMSG) (D -2) / human chorionic gonadotropin (hCG) (D 0) to induce pseudopregnancy. Serum progesterone (P4) and ovarian expression of NR4A1 were detected by RIA and WB, respectively, at follicle stage (D 0), early (D 2), middle (D 7) and late (D 14 and D 20) luteal stages. To confirm the role of NR4A1 during the luteal regression, rats were treated with prostaglandin F2α analog (PGF) for 0-8 h on D 7 to detect the expressions of NR4A1 and NR4A2. RIA result showed that serum P4 reached highest level on D 7 and then declined. WB results showed that there were two types of NR4A1 (NR4A1-L and NR4A1-S) expressed in the ovary. The ovarian NR4A1-L decreased at the late luteal stage (D 20). However, the NR4A1-S increased at the late luteal stage (D 14). After PGF treatment on D 7, the expression of NR4A1-S increased which peaked at 0.5-1 h and then declined; while NR4A1-L expression did not change within 8 h. Real-time PCR results showed that the ovarian NR4A1 mRNA increased within 0.5 h, maintained high at 1 h and then declined. The NR4A2 mRNA expression exhibited a similar pattern to that of NR4A1 mRNA, though its abundance was not as high as NR4A1. IHC results revealed that NR4A1-L was expressed mainly in the cytoplasm of luteal steroidogenic cells, faintly expressed in the follicle theca cells, oocytes and the pericytes; while NR4A2 was primarily localized in the cytoplasm of luteal steroidogenic cells. In conclusion, all these results demonstrate that NR4A2 as well as NR4A1 might be involved in the luteal development and luteolysis in rats.
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15
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Bai WJ, Jin PJ, Kuang MQ, Wei QW, Shi FX, Davis JS, Mao DG. Temporal regulation of extracellular signal-regulated kinase 1/2 phosphorylation, heat shock protein 70 and activating transcription factor 3 during prostaglandin F-induced luteal regression in pseudopregnant rats following heat stress. Reprod Fertil Dev 2018; 29:1184-1193. [PMID: 27169499 DOI: 10.1071/rd15415] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 03/17/2016] [Indexed: 12/24/2022] Open
Abstract
The aim of the present study was to investigate the effects of heat stress on heat shock protein (HSP) 70 expression and mitogen-activated protein kinase (MAPK) and protein kinase (PK) B signalling during prostaglandin F (PGF)-induced luteal regression. During pseudopregnancy, rats were exposed to heat stress (HS, 40°C, 2h) for 7 days and treated with PGF or physiological saline on Day 7; serum and ovaries were collected 0, 1, 2, 8 or 24h after PGF treatment. The early inhibitory effect of PGF on progesterone was reduced in HS rats. HSP70 expression in response to PGF was significantly enhanced in HS rats. PGF-induced phosphorylation of extracellular signal-regulated kinase (ERK) 1/2 was significantly greater in the HS group; however, HS rats exhibited elevated basal levels of phosphorylation of p38 MAPK, but not ERK1/2. PGF treatment increased expression of activating transcription factor (ATF) 3 at 2h, which was inhibited by heat stress. Evaluating PKB signalling revealed that phosphorylation of p-Akt (Thr308 and Ser473) was reduced at 8 and 24h after PGF treatment in both non-heat stress (NHS) and HS groups, but there were no significant differences between the HS and NHS groups at any of the time points. In conclusion, the present study provides further evidence that heat stress may enhance HSP70 and affect ERK1/2 and ATF3 expression, but not Akt activation, during PGF-induced luteal regression in pseudopregnant rats.
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Affiliation(s)
- Wu-Jiao Bai
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Peng-Jing Jin
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Mei-Qian Kuang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Quan-Wei Wei
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Fang-Xiong Shi
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - John S Davis
- VA Nebraska-Western Iowa Health Care System and Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Da-Gan Mao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
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16
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Qi L, Jiang J, Jin P, Kuang M, Wei Q, Shi F, Mao D. Expression patterns of claudin-5 and its related signals during luteal regression in pseudopregnant rats: The enhanced effect of additional PGF treatment. Acta Histochem 2018; 120:221-227. [PMID: 29449022 DOI: 10.1016/j.acthis.2018.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 01/29/2018] [Accepted: 02/06/2018] [Indexed: 12/23/2022]
Abstract
To study the expression patterns of claudin-5 and its related signals during luteal regression in rats, a sequential PMSG/hCG treatment paradigm was used to obtain a single, well-defined generation of corpus luteum (CL). A total of 35 rats were treated with one PGF or two PGF at an interval of 24 h from day 7 of pseudopregnancy to induce CL regression. Serum and ovaries were collected at 0, 2, 4, 8 or 24 h after one PGF injection (1 PGF), 2 or 24 h after two PGF injections (2 PGF). The serum progesterone level was detected by RIA; the ovarian expression of claudin-5, the phosphorylations of STAT3 (p-STAT3), Akt (p-Akt), ERK1/2 (p-ERK) and p38 MAPK (p-p38) were detected by western blot, real-time PCR and IHC. Results showed that serum progesterone (P4) decreased after PGF treatment. Claudin-5 mRNA decreased at 4 h and 8 h after 1 PGF and 2 h after 2 PGF, and claudin-5 protein decreased at 4 h after 1 PGF. p-STAT3 increased at 4 h after 1 PGF and 2 h after 2 PGF. p-ERK increased at 2 h after 2 PGF. The level of p-Akt decreased at 4 h after 1 PGF. PGF treatment did not alter the phosphorylation of p38 MAPK at any time points in this study. IHC results revealed that claudin-5 was expressed in the nuclei and cytoplasm of steroidogenic cells and in the vessels, while PGF induced-p-STAT3 was expressed uniformly in the cytoplasm of luteal steroidogenic cells. In conclusion, PGF treatment decreased the expression of claudin-5 and the additional PGF treatment enhanced the decrease in claudin-5 mRNA expression and the increases in ERK1/2 and STAT3 phosphorylation in the corpus luteum of pseudopregnant rats, which will contribute new information to the further study of molecular mechanism of luteal regression.
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17
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Plewes MR, Burns PD, Hyslop RM, George Barisas B. Influence of omega-3 fatty acids on bovine luteal cell plasma membrane dynamics. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:2413-2419. [PMID: 28912100 DOI: 10.1016/j.bbamem.2017.09.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 08/09/2017] [Accepted: 09/10/2017] [Indexed: 01/07/2023]
Abstract
Fish oil is a rich source of omega-3 fatty acids which disrupt lipid microdomain structure and affect mobility of the prostaglandin F2α (FP) receptor in bovine luteal cells. The objectives of this study were to determine the effects of individual omega-3 fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) on 1) membrane fatty acid composition, 2) lipid microdomain structure, and 3) lateral mobility of the FP receptor in bovine luteal cells. Ovaries were collected from a local abattoir (n=5/experiment). The corpus luteum was resected and enzymatically digested using collagenase to generate a mixed luteal cell population. In all experiments, luteal cells were treated with 0, 1, 10 or 100μM EPA or DHA for 72h to allow incorporation of fatty acids into membrane lipids. Results from experiment 1 show that culturing luteal cells in the presence of EPA or DHA increased these luteal fatty acids. In experiment 2, both EPA and DHA increased spatial distribution of lipid microdomains in a dose-dependent manner. Single particle tracking results from experiment 3 show that increasing both EPA and DHA concentrations increased micro- and macro-diffusion coefficients, increased domain size, and decreased residence time of FP receptors. Collectively, results from this study demonstrate similar effects of EPA and DHA on lipid microdomain structure and lateral mobility of FP receptors in cultured bovine luteal cells. Moreover, only 10μM of either fatty acid was needed to mimic the effects of fish oil.
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Affiliation(s)
- Michele R Plewes
- School of Biological Sciences, University of Northern Colorado, Greeley, CO 80639, United States
| | - Patrick D Burns
- School of Biological Sciences, University of Northern Colorado, Greeley, CO 80639, United States.
| | - Richard M Hyslop
- Department of Chemistry and Biochemistry, University of Northern Colorado, Greeley, CO 80639, United States
| | - B George Barisas
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States
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18
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Talbott H, Hou X, Qiu F, Zhang P, Guda C, Yu F, Cushman RA, Wood JR, Wang C, Cupp AS, Davis JS. Early transcriptome responses of the bovine midcycle corpus luteum to prostaglandin F2α includes cytokine signaling. Mol Cell Endocrinol 2017; 452:93-109. [PMID: 28549990 PMCID: PMC7388008 DOI: 10.1016/j.mce.2017.05.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 05/17/2017] [Accepted: 05/18/2017] [Indexed: 12/16/2022]
Abstract
In ruminants, prostaglandin F2alpha (PGF2α)-mediated luteolysis is essential prior to estrous cycle resumption, and is a target for improving fertility. To deduce early PGF2α-provoked changes in the corpus luteum a short time-course (0.5-4 h) was performed on cows at midcycle. A microarray-determined transcriptome was established and examined by bioinformatic pathway analysis. Classic PGF2α effects were evident by changes in early response genes (FOS, JUN, ATF3) and prediction of active pathways (PKC, MAPK). Several cytokine transcripts were elevated and NF-κB and STAT activation were predicted by pathway analysis. Self-organizing map analysis grouped differentially expressed transcripts into ten mRNA expression patterns indicative of temporal signaling cascades. Comparison with two analogous datasets revealed a conserved group of 124 transcripts similarly altered by PGF2α treatment, which both, directly and indirectly, indicated cytokine activation. Elevated levels of cytokine transcripts after PGF2α and predicted activation of cytokine pathways implicate inflammatory reactions early in PGF2α-mediated luteolysis.
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Affiliation(s)
- Heather Talbott
- Olson Center for Women's Health/Obstetrics and Gynecology Department, University of Nebraska Medical Center, 989450 Nebraska Medical Center, Omaha, NE 68198-9450, USA; Biochemistry and Molecular Biology Department, University of Nebraska Medical Center, 985870 Nebraska Medical Center, Omaha, NE 68198-5870, USA.
| | - Xiaoying Hou
- Olson Center for Women's Health/Obstetrics and Gynecology Department, University of Nebraska Medical Center, 989450 Nebraska Medical Center, Omaha, NE 68198-9450, USA.
| | - Fang Qiu
- Biostatistics Department, University of Nebraska Medical Center, 984375 Nebraska Medical Center, Omaha, NE 68198-4375, USA.
| | - Pan Zhang
- Olson Center for Women's Health/Obstetrics and Gynecology Department, University of Nebraska Medical Center, 989450 Nebraska Medical Center, Omaha, NE 68198-9450, USA.
| | - Chittibabu Guda
- Department of Genetics, Cell Biology and Anatomy, Bioinformatics and Systems Biology Core, University of Nebraska Medical Center, 985805 Nebraska Medical Center, Omaha, NE 68198-5805, USA.
| | - Fang Yu
- Biostatistics Department, University of Nebraska Medical Center, 984375 Nebraska Medical Center, Omaha, NE 68198-4375, USA.
| | - Robert A Cushman
- Nutrition and Environmental Management Research Unit, United States Department of Agriculture, P.O. Box 166 (State Spur 18D)/USDA-ARS-PA-USMARC, Clay Center, NE 68933, USA.
| | - Jennifer R Wood
- Animal Science Department, University of Nebraska-Lincoln, P.O. Box 830908, C203 ANSC, Lincoln, NE 68583-0908, USA.
| | - Cheng Wang
- Olson Center for Women's Health/Obstetrics and Gynecology Department, University of Nebraska Medical Center, 989450 Nebraska Medical Center, Omaha, NE 68198-9450, USA.
| | - Andrea S Cupp
- Animal Science Department, University of Nebraska-Lincoln, P.O. Box 830908, C203 ANSC, Lincoln, NE 68583-0908, USA.
| | - John S Davis
- Olson Center for Women's Health/Obstetrics and Gynecology Department, University of Nebraska Medical Center, 989450 Nebraska Medical Center, Omaha, NE 68198-9450, USA; Biochemistry and Molecular Biology Department, University of Nebraska Medical Center, 985870 Nebraska Medical Center, Omaha, NE 68198-5870, USA; Veterans Affairs Medical Center, 4101 Woolworth Ave, Omaha, NE 68105, USA.
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19
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Cheng X, Liu J, Shan H, Sun L, Huang C, Yan Q, Jiang R, Ding L, Jiang Y, Zhou J, Yan G, Sun H. Activating transcription factor 3 promotes embryo attachment via up-regulation of leukemia inhibitory factor in vitro. Reprod Biol Endocrinol 2017; 15:42. [PMID: 28577574 PMCID: PMC5457579 DOI: 10.1186/s12958-017-0260-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Accepted: 05/23/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND A receptive endometrium is essential for maternal-embryonic molecular communication during implantation. However, the specific molecular regulatory mechanisms of the endometrial capacity remain poorly understood. Here, we examined activating transcription factor 3 (ATF3) expression in human endometria and the functional effect of ATF3 on embryo attachment in vitro. METHODS Immunohistochemistry (IHC) was used to assess the ATF3 expression patterns in human endometria. Quantitative real-time PCR (qRT-PCR), western blotting and immunofluorescence (IF) studies were applied to explore ATF3 expression in Ishikawa cells upon estrogen (E2) and medroxyprogesterone acetate (MPA) treatment. qRT-PCR and western blotting were performed to inspect LIF (leukemia inhibitory factor) expression after enhancement or inhibition of ATF3, and a luciferase reporter assay and ChIP-PCR were used to confirm the regulatory mechanism of ATF3 to LIF. Endometrial epithelial capacity was assessed by an in vitro model of attachment of BeWo spheroids to Ishikawa cells. Western blotting was performed to compare the expression of ATF3 in endometrial samples of recurrent implantation failure (RIF) patients with that in samples from fertile women (FER) who had undergone no less than one successful embryo transplantation. RESULTS ATF3 was located in human endometrial epithelial cells and stromal cells and was significantly induced by E2 and MPA in Ishikawa cells. Adenovirus-mediated overexpression of ATF3 in Ishikawa cells activated LIF promoter activity and enhanced its expression. Accordingly, the stimulation of BeWo spheroid adhesion promoted by ATF3 was inhibited by pretreatment with a specific antibody against LIF via the antibody-blocking assay. Moreover, ATF3 was aberrantly decreased in the endometria of RIF patients. CONCLUSIONS Our findings suggest that ATF3 plays a significant role in regulating human endometrial receptivity and embryo attachment in vitro via up-regulation of leukemia inhibitory factor. TRIAL REGISTRATION Construction and management of the Nanjing multi-center biobank. No. 2013-081-01 . Registered 10 Dec. 2013.
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Affiliation(s)
- Xi Cheng
- 0000 0004 1800 1685grid.428392.6Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
- Center of Reproductive Medicine, Nanjing Jinling Hospital, the Medical School of Nanjing University, Nanjing, 210002 China
| | - Jingyu Liu
- 0000 0004 1800 1685grid.428392.6Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
| | - Huizhi Shan
- 0000 0004 1800 1685grid.428392.6Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
| | - Lihua Sun
- grid.412523.3Reproductive Medicine Center, Shanghai Ninth People’s Hospital Affiliated Shanghai JiaTong University School of Medicine, Shanghai, 200011 People’s Republic of China
| | - Chenyang Huang
- 0000 0004 1800 1685grid.428392.6Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
| | - Qiang Yan
- 0000 0004 1800 1685grid.428392.6Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
| | - Ruiwei Jiang
- 0000 0004 1800 1685grid.428392.6Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
| | - Lijun Ding
- 0000 0004 1800 1685grid.428392.6Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
| | - Yue Jiang
- 0000 0004 1800 1685grid.428392.6Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
| | - Jianjun Zhou
- 0000 0004 1800 1685grid.428392.6Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
| | - Guijun Yan
- 0000 0004 1800 1685grid.428392.6Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
- Collaborative Innovation Platform for Reproductive Biology and Technology of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
| | - Haixiang Sun
- 0000 0004 1800 1685grid.428392.6Reproductive Medicine Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
- Collaborative Innovation Platform for Reproductive Biology and Technology of Nanjing University Medical School, Nanjing, 210008 People’s Republic of China
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Romereim SM, Summers AF, Pohlmeier WE, Zhang P, Hou X, Talbott HA, Cushman RA, Wood JR, Davis JS, Cupp AS. Gene expression profiling of bovine ovarian follicular and luteal cells provides insight into cellular identities and functions. Mol Cell Endocrinol 2017; 439:379-394. [PMID: 27693538 PMCID: PMC6711749 DOI: 10.1016/j.mce.2016.09.029] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 08/31/2016] [Accepted: 09/27/2016] [Indexed: 01/24/2023]
Abstract
After ovulation, somatic cells of the ovarian follicle (theca and granulosa cells) become the small and large luteal cells of the corpus luteum. Aside from known cell type-specific receptors and steroidogenic enzymes, little is known about the differences in the gene expression profiles of these four cell types. Analysis of the RNA present in each bovine cell type using Affymetrix microarrays yielded new cell-specific genetic markers, functional insight into the behavior of each cell type via Gene Ontology Annotations and Ingenuity Pathway Analysis, and evidence of small and large luteal cell lineages using Principle Component Analysis. Enriched expression of select genes for each cell type was validated by qPCR. This expression analysis offers insight into cell-specific behaviors and the differentiation process that transforms somatic follicular cells into luteal cells.
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Affiliation(s)
- Sarah M Romereim
- University of Nebraska-Lincoln, Animal Science, P.O. Box 830908, C203 ANSC, Lincoln, NE 68583-0908, USA(2)
| | - Adam F Summers
- University of Nebraska-Lincoln, Animal Science, P.O. Box 830908, C203 ANSC, Lincoln, NE 68583-0908, USA(2).
| | - William E Pohlmeier
- University of Nebraska-Lincoln, Animal Science, P.O. Box 830908, C203 ANSC, Lincoln, NE 68583-0908, USA(2)
| | - Pan Zhang
- University of Nebraska Medical Center, Olson Center for Women's Health, 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA
| | - Xiaoying Hou
- University of Nebraska Medical Center, Olson Center for Women's Health, 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA
| | - Heather A Talbott
- University of Nebraska Medical Center, Olson Center for Women's Health, 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA
| | - Robert A Cushman
- USDA, ARS, U.S. Meat Animal Research Center, Nutrition and Environmental Management Research, Spur 18D, Clay Center, NE 68933, USA.
| | - Jennifer R Wood
- University of Nebraska-Lincoln, Animal Science, P.O. Box 830908, C203 ANSC, Lincoln, NE 68583-0908, USA(2)
| | - John S Davis
- University of Nebraska Medical Center, Olson Center for Women's Health, 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA; VA Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.
| | - Andrea S Cupp
- University of Nebraska-Lincoln, Animal Science, P.O. Box 830908, C203 ANSC, Lincoln, NE 68583-0908, USA(2).
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21
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Romereim SM, Summers AF, Pohlmeier WE, Zhang P, Hou X, Talbott HA, Cushman RA, Wood JR, Davis JS, Cupp AS. Transcriptomes of bovine ovarian follicular and luteal cells. Data Brief 2016; 10:335-339. [PMID: 28004024 PMCID: PMC5157705 DOI: 10.1016/j.dib.2016.11.093] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 11/19/2016] [Accepted: 11/23/2016] [Indexed: 11/18/2022] Open
Abstract
Affymetrix Bovine GeneChip® Gene 1.0 ST Array RNA expression analysis was performed on four somatic ovarian cell types: the granulosa cells (GCs) and theca cells (TCs) of the dominant follicle and the large luteal cells (LLCs) and small luteal cells (SLCs) of the corpus luteum. The normalized linear microarray data was deposited to the NCBI GEO repository (GSE83524). Subsequent ANOVA determined genes that were enriched (≥2 fold more) or decreased (≤−2 fold less) in one cell type compared to all three other cell types, and these analyzed and filtered datasets are presented as tables. Genes that were shared in enriched expression in both follicular cell types (GCs and TCs) or in both luteal cells types (LLCs and SLCs) are also reported in tables. The standard deviation of the analyzed array data in relation to the log of the expression values is shown as a figure. These data have been further analyzed and interpreted in the companion article “Gene expression profiling of ovarian follicular and luteal cells provides insight into cellular identities and functions” (Romereim et al., 2017) [1].
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Affiliation(s)
- Sarah M. Romereim
- University of Nebraska–Lincoln; Animal Science, P.O. Box 830908, C203 ANSC, Lincoln, NE 68583-0908, USA
| | - Adam F. Summers
- University of Nebraska–Lincoln; Animal Science, P.O. Box 830908, C203 ANSC, Lincoln, NE 68583-0908, USA
| | - William E. Pohlmeier
- University of Nebraska–Lincoln; Animal Science, P.O. Box 830908, C203 ANSC, Lincoln, NE 68583-0908, USA
| | - Pan Zhang
- University of Nebraska Medical Center; 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA
| | - Xiaoying Hou
- University of Nebraska Medical Center; 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA
| | - Heather A. Talbott
- University of Nebraska Medical Center; 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA
| | - Robert A. Cushman
- USDA, ARS, US Meat Animal Research Center, Nutrition and Environmental Management Research, Spur 18D, Clay Center, NE 68933, USA
| | - Jennifer R. Wood
- University of Nebraska–Lincoln; Animal Science, P.O. Box 830908, C203 ANSC, Lincoln, NE 68583-0908, USA
| | - John S. Davis
- University of Nebraska Medical Center; 983255 Nebraska Medical Center, Omaha, NE 68198-3255, USA
- VA Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
| | - Andrea S. Cupp
- University of Nebraska–Lincoln; Animal Science, P.O. Box 830908, C203 ANSC, Lincoln, NE 68583-0908, USA
- Corresponding author.
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22
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Jiang C, Hou X, Wang C, May JV, Butnev VY, Bousfield GR, Davis JS. Hypoglycosylated hFSH Has Greater Bioactivity Than Fully Glycosylated Recombinant hFSH in Human Granulosa Cells. J Clin Endocrinol Metab 2015; 100:E852-60. [PMID: 25915568 PMCID: PMC4454802 DOI: 10.1210/jc.2015-1317] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
CONTEXT Previous studies suggest that aging in women is associated with a reduction in hypoglycosylated forms of FSH. OBJECTIVE Experiments were performed to determine whether glycosylation of the FSHβ subunit modulates the biological activity of FSH in human granulosa cells. DESIGN AND SETTING Recombinant human FSH (hFSH) derived from GH3 pituitary cells was purified into fractions containing hypoglycosylated hFSH(21/18) and fully glycosylated hFSH(24). The response to FSH glycoforms was evaluated using the well-characterized, FSH-responsive human granulosa cell line, KGN at an academic medical center. INTERVENTIONS Granulosa cells were treated with increasing concentrations of fully- or hypoglycosylated FSH glycoforms for periods up to 48 hours. MAIN OUTCOME MEASURE(S) The main outcomes were indices of cAMP-dependent cell signaling and estrogen and progesterone synthesis. RESULTS We observed that hypoglycosylated FSH(21/18) was significantly more effective than fully glycosylated FSH(24) at stimulating cAMP accumulation, protein kinase A (PKA) activity, and cAMP response element binding protein (CREB) (S133) phosphorylation. FSH(21/18) was also much more effective than hFSH(24) on the stimulation CREB-response element-mediated transcription, expression of aromatase and STAR proteins, and synthesis of estrogen and progesterone. Adenoviral-mediated expression of the endogenous inhibitor of PKA, inhibited FSH(21/18)- and FSH(24)-stimulated CREB phosphorylation, and steroidogenesis. CONCLUSIONS Hypoglycosylated FSH(21/18) has greater bioactivity than fully glycosylated hFSH(24), suggesting that age-dependent decreases in hypoglycosylated hFSH contribute to reduced ovarian responsiveness. Hypoglycosylated FSH may be useful in follicle stimulation protocols for older patients using assisted reproduction technologies.
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Affiliation(s)
- Chao Jiang
- The Olson Center for Women's Health, Department of Obstetrics and Gynecology (C.J., X.H., C.W., J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198; Nebraska-Northwest Iowa VA Medical Center (X.H., J.S.D.), Omaha, Nebraska 68105; Department of Biological Sciences (J.V.M., V.Y.B., G.R.B.), Wichita State University, Wichita, Kansas 67260; and Department of Biochemistry and Molecular Biology (J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198
| | - Xiaoying Hou
- The Olson Center for Women's Health, Department of Obstetrics and Gynecology (C.J., X.H., C.W., J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198; Nebraska-Northwest Iowa VA Medical Center (X.H., J.S.D.), Omaha, Nebraska 68105; Department of Biological Sciences (J.V.M., V.Y.B., G.R.B.), Wichita State University, Wichita, Kansas 67260; and Department of Biochemistry and Molecular Biology (J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198
| | - Cheng Wang
- The Olson Center for Women's Health, Department of Obstetrics and Gynecology (C.J., X.H., C.W., J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198; Nebraska-Northwest Iowa VA Medical Center (X.H., J.S.D.), Omaha, Nebraska 68105; Department of Biological Sciences (J.V.M., V.Y.B., G.R.B.), Wichita State University, Wichita, Kansas 67260; and Department of Biochemistry and Molecular Biology (J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198
| | - Jeffrey V May
- The Olson Center for Women's Health, Department of Obstetrics and Gynecology (C.J., X.H., C.W., J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198; Nebraska-Northwest Iowa VA Medical Center (X.H., J.S.D.), Omaha, Nebraska 68105; Department of Biological Sciences (J.V.M., V.Y.B., G.R.B.), Wichita State University, Wichita, Kansas 67260; and Department of Biochemistry and Molecular Biology (J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198
| | - Viktor Y Butnev
- The Olson Center for Women's Health, Department of Obstetrics and Gynecology (C.J., X.H., C.W., J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198; Nebraska-Northwest Iowa VA Medical Center (X.H., J.S.D.), Omaha, Nebraska 68105; Department of Biological Sciences (J.V.M., V.Y.B., G.R.B.), Wichita State University, Wichita, Kansas 67260; and Department of Biochemistry and Molecular Biology (J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198
| | - George R Bousfield
- The Olson Center for Women's Health, Department of Obstetrics and Gynecology (C.J., X.H., C.W., J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198; Nebraska-Northwest Iowa VA Medical Center (X.H., J.S.D.), Omaha, Nebraska 68105; Department of Biological Sciences (J.V.M., V.Y.B., G.R.B.), Wichita State University, Wichita, Kansas 67260; and Department of Biochemistry and Molecular Biology (J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198
| | - John S Davis
- The Olson Center for Women's Health, Department of Obstetrics and Gynecology (C.J., X.H., C.W., J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198; Nebraska-Northwest Iowa VA Medical Center (X.H., J.S.D.), Omaha, Nebraska 68105; Department of Biological Sciences (J.V.M., V.Y.B., G.R.B.), Wichita State University, Wichita, Kansas 67260; and Department of Biochemistry and Molecular Biology (J.S.D.), University of Nebraska Medical Center, Omaha, Nebraska 68198
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23
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Guo N, Meng C, Bai W, Wei Q, Shi F, Davis JS, Mao D. Prostaglandin F2α induces expression of activating transcription factor 3 (ATF3) and activates MAPK signaling in the rat corpus luteum. Acta Histochem 2015; 117:211-8. [PMID: 25614048 DOI: 10.1016/j.acthis.2014.12.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 12/24/2014] [Accepted: 12/29/2014] [Indexed: 12/11/2022]
Abstract
The current study was conducted to evaluate the expression of ATF3, in association with the activation of mitogen-activated protein kinases (MAPK) during prostaglandin F2α analog (PGF)-induced luteal regression in rats. A sequential PMSG/hCG treatment paradigm was used to obtain a single, well-defined generation of corpora lutea (CL) in rats. Rats were treated with PGF for 0-4h on day 7 of pseudopregnancy. Results showed that serum progesterone (P4) concentrations declined in a time dependent manner. Western blot results revealed that ATF3 increased within 2h post-PGF injection. Phosphorylated ERK1/2 (p-ERK) and JNK (p-JNK) increased within 30min and then were gradually reduced in response to PGF. In contrast, the levels of phosphorylated p38 MAPK (p-p38) were not significantly altered. The immunostaining density for p-ERK decreased from the periphery to the center of the corpus luteum following treatment with PGF, while ATF3 was expressed uniformly in the nuclei of luteal steroidogenic cells. These results indicated that treatment with PGF in vivo could induce increases in MAPK phosphorylation, especially in p-ERK, which might be correlated with the increases in ATF3 expression and the decline in P4 concentrations. To our knowledge, this is the first study to provide evidence for temporal relationships between MAPK activation and ATF3 expression during PGF-induced luteal regression in the rat.
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Affiliation(s)
- Nannan Guo
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Chenling Meng
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Wujiao Bai
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Quanwei Wei
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Fangxiong Shi
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - John S Davis
- VA Nebraska-Western Iowa Health Care System and Department of Obstetrics and Gynecology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Dagan Mao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
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24
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Talbott H, Delaney A, Zhang P, Yu Y, Cushman RA, Cupp AS, Hou X, Davis JS. Effects of IL8 and immune cells on the regulation of luteal progesterone secretion. Reproduction 2014; 148:21-31. [PMID: 24686456 DOI: 10.1530/rep-13-0602] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Recent studies have suggested that chemokines may mediate the luteolytic action of prostaglandin F2α (PGF). Our objective was to identify chemokines induced by PGF in vivo and to determine the effects of interleukin 8 (IL8) on specific luteal cell types in vitro. Mid-cycle cows were injected with saline or PGF, ovaries were removed after 0.5-4 h, and expression of chemokine was analyzed by qPCR. In vitro expression of IL8 was analyzed after PGF administration and with cell signaling inhibitors to determine the mechanism of PGF-induced chemokine expression. Purified neutrophils were analyzed for migration and activation in response to IL8 and PGF. Purified luteal cell types (steroidogenic, endothelial, and fibroblast cells) were used to identify which cells respond to chemokines. Neutrophils and peripheral blood mononuclear cells (PBMCs) were cocultured with steroidogenic cells to determine their effect on progesterone production. IL8, CXCL2, CCL2, and CCL8 transcripts were rapidly increased following PGF treatment in vivo. The stimulatory action of PGF on IL8 mRNA expression in vitro was prevented by inhibition of p38 and JNK signaling. IL8, but not PGF, TNF, or TGFB1, stimulated neutrophil migration. IL8 had no apparent action in purified luteal steroidogenic, endothelial, or fibroblast cells, but stimulated ERK phosphorylation in neutrophils. In coculture experiments neither IL8 nor activated neutrophils altered basal or LH-stimulated luteal cell progesterone synthesis. In contrast, activated PBMCs inhibited LH-stimulated progesterone synthesis from cultured luteal cells. These data implicate a complex cascade of events during luteolysis, involving chemokine signaling, neutrophil recruitment, and immune cell action within the corpus luteum.
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Affiliation(s)
- Heather Talbott
- Department of Biochemistry and Molecular BiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USADepartment of Obstetrics and GynecologyOlson Center for Women's Health, University of Nebraska Medical Center, Omaha, Nebraska 68198-3255, USADepartment of Pathology and MicrobiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5900, USAUnited States Department of Agriculture-U.S. Meat Animal Research CenterClay Center, Nebraska 68933-0166, USADepartment of Animal ScienceUniversity of Nebraska-Lincoln, Lincoln, Nebraska 68583-0908, USAVA Nebraska Western Iowa Health Care System and Olson Center for Women's HealthDepartment of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, Nebraska 68198-3255, USADepartment of Biochemistry and Molecular BiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USADepartment of Obstetrics and GynecologyOlson Center for Women's Health, University of Nebraska Medical Center, Omaha, Nebraska 68198-3255, USADepartment of Pathology and MicrobiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5900, USAUnited States Department of Agriculture-U.S. Meat Animal Research CenterClay Center, Nebraska 68933-0166, USADepartment of Animal ScienceUniversity of Nebraska-Lincoln, Lincoln, Nebraska 68583-0908, USAVA Nebraska Western Iowa Health Care System and Olson Center for Women's HealthDepartment of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, Nebraska 68198-3255, USA
| | - Abigail Delaney
- Department of Biochemistry and Molecular BiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USADepartment of Obstetrics and GynecologyOlson Center for Women's Health, University of Nebraska Medical Center, Omaha, Nebraska 68198-3255, USADepartment of Pathology and MicrobiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5900, USAUnited States Department of Agriculture-U.S. Meat Animal Research CenterClay Center, Nebraska 68933-0166, USADepartment of Animal ScienceUniversity of Nebraska-Lincoln, Lincoln, Nebraska 68583-0908, USAVA Nebraska Western Iowa Health Care System and Olson Center for Women's HealthDepartment of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, Nebraska 68198-3255, USA
| | - Pan Zhang
- Department of Biochemistry and Molecular BiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USADepartment of Obstetrics and GynecologyOlson Center for Women's Health, University of Nebraska Medical Center, Omaha, Nebraska 68198-3255, USADepartment of Pathology and MicrobiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5900, USAUnited States Department of Agriculture-U.S. Meat Animal Research CenterClay Center, Nebraska 68933-0166, USADepartment of Animal ScienceUniversity of Nebraska-Lincoln, Lincoln, Nebraska 68583-0908, USAVA Nebraska Western Iowa Health Care System and Olson Center for Women's HealthDepartment of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, Nebraska 68198-3255, USA
| | - Yangsheng Yu
- Department of Biochemistry and Molecular BiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USADepartment of Obstetrics and GynecologyOlson Center for Women's Health, University of Nebraska Medical Center, Omaha, Nebraska 68198-3255, USADepartment of Pathology and MicrobiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5900, USAUnited States Department of Agriculture-U.S. Meat Animal Research CenterClay Center, Nebraska 68933-0166, USADepartment of Animal ScienceUniversity of Nebraska-Lincoln, Lincoln, Nebraska 68583-0908, USAVA Nebraska Western Iowa Health Care System and Olson Center for Women's HealthDepartment of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, Nebraska 68198-3255, USA
| | - Robert A Cushman
- Department of Biochemistry and Molecular BiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USADepartment of Obstetrics and GynecologyOlson Center for Women's Health, University of Nebraska Medical Center, Omaha, Nebraska 68198-3255, USADepartment of Pathology and MicrobiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5900, USAUnited States Department of Agriculture-U.S. Meat Animal Research CenterClay Center, Nebraska 68933-0166, USADepartment of Animal ScienceUniversity of Nebraska-Lincoln, Lincoln, Nebraska 68583-0908, USAVA Nebraska Western Iowa Health Care System and Olson Center for Women's HealthDepartment of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, Nebraska 68198-3255, USA
| | - Andrea S Cupp
- Department of Biochemistry and Molecular BiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USADepartment of Obstetrics and GynecologyOlson Center for Women's Health, University of Nebraska Medical Center, Omaha, Nebraska 68198-3255, USADepartment of Pathology and MicrobiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5900, USAUnited States Department of Agriculture-U.S. Meat Animal Research CenterClay Center, Nebraska 68933-0166, USADepartment of Animal ScienceUniversity of Nebraska-Lincoln, Lincoln, Nebraska 68583-0908, USAVA Nebraska Western Iowa Health Care System and Olson Center for Women's HealthDepartment of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, Nebraska 68198-3255, USA
| | - Xiaoying Hou
- Department of Biochemistry and Molecular BiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USADepartment of Obstetrics and GynecologyOlson Center for Women's Health, University of Nebraska Medical Center, Omaha, Nebraska 68198-3255, USADepartment of Pathology and MicrobiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5900, USAUnited States Department of Agriculture-U.S. Meat Animal Research CenterClay Center, Nebraska 68933-0166, USADepartment of Animal ScienceUniversity of Nebraska-Lincoln, Lincoln, Nebraska 68583-0908, USAVA Nebraska Western Iowa Health Care System and Olson Center for Women's HealthDepartment of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, Nebraska 68198-3255, USA
| | - John S Davis
- Department of Biochemistry and Molecular BiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5870, USADepartment of Obstetrics and GynecologyOlson Center for Women's Health, University of Nebraska Medical Center, Omaha, Nebraska 68198-3255, USADepartment of Pathology and MicrobiologyUniversity of Nebraska Medical Center, Omaha, Nebraska 68198-5900, USAUnited States Department of Agriculture-U.S. Meat Animal Research CenterClay Center, Nebraska 68933-0166, USADepartment of Animal ScienceUniversity of Nebraska-Lincoln, Lincoln, Nebraska 68583-0908, USAVA Nebraska Western Iowa Health Care System and Olson Center for Women's HealthDepartment of Obstetrics and Gynecology, University of Nebraska Medical Center, 983255 Nebraska Medical Center, Omaha, Nebraska 68198-3255, USA
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