1
|
Giedt MS, Thomalla JM, White RP, Johnson MR, Lai ZW, Tootle TL, Welte MA. Adipose triglyceride lipase promotes prostaglandin-dependent actin remodeling by regulating substrate release from lipid droplets. Development 2023; 150:dev201516. [PMID: 37306387 PMCID: PMC10281261 DOI: 10.1242/dev.201516] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 05/03/2023] [Indexed: 05/13/2023]
Abstract
Lipid droplets (LDs), crucial regulators of lipid metabolism, accumulate during oocyte development. However, their roles in fertility remain largely unknown. During Drosophila oogenesis, LD accumulation coincides with the actin remodeling necessary for follicle development. Loss of the LD-associated Adipose Triglyceride Lipase (ATGL) disrupts both actin bundle formation and cortical actin integrity, an unusual phenotype also seen when the prostaglandin (PG) synthase Pxt is missing. Dominant genetic interactions and PG treatment of follicles indicate that ATGL acts upstream of Pxt to regulate actin remodeling. Our data suggest that ATGL releases arachidonic acid (AA) from LDs to serve as the substrate for PG synthesis. Lipidomic analysis detects AA-containing triglycerides in ovaries, and these are increased when ATGL is lost. High levels of exogenous AA block follicle development; this is enhanced by impairing LD formation and suppressed by reducing ATGL. Together, these data support the model that AA stored in LD triglycerides is released by ATGL to drive the production of PGs, which promote the actin remodeling necessary for follicle development. We speculate that this pathway is conserved across organisms to regulate oocyte development and promote fertility.
Collapse
Affiliation(s)
- Michelle S. Giedt
- Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA
| | | | - Roger P. White
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Matthew R. Johnson
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Zon Weng Lai
- Harvard T.H. Chan Advanced Multi-omics Platform, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Tina L. Tootle
- Anatomy and Cell Biology, University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA
| | - Michael A. Welte
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| |
Collapse
|
2
|
Shen Q, Wu X, Chen J, He C, Wang Z, Zhou B, Zhang H. Immune Regulation of Seminal Plasma on the Endometrial Microenvironment: Physiological and Pathological Conditions. Int J Mol Sci 2023; 24:14639. [PMID: 37834087 PMCID: PMC10572377 DOI: 10.3390/ijms241914639] [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: 09/01/2023] [Revised: 09/23/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Seminal plasma (SP) accounts for more than 90% of semen volume. It induces inflammation, regulates immune tolerance, and facilitates embryonic development and implantation in the female reproductive tract. In the physiological state, SP promotes endometrial decidualization and causes changes in immune cells such as macrophages, natural killer cells, regulatory T cells, and dendritic cells. This leads to the secretion of cytokines and chemokines and also results in the alteration of miRNA profiles and the expression of genes related to endometrial tolerance and angiogenesis. Together, these changes modulate the endometrial immune microenvironment and contribute to implantation and pregnancy. However, in pathological situations, abnormal alterations in SP due to advanced age or poor diet in men can interfere with a woman's immune adaptation to pregnancy, negatively affecting embryo implantation and even the health of the offspring. Uterine pathologies such as endometriosis and endometritis can cause the endometrium to respond negatively to SP, which can further contribute to pathological progress and interfere with conception. The research on the mechanism of SP in the endometrium is conducive to the development of new targets for intervention to improve reproductive outcomes and may also provide new ideas for semen-assisted treatment of clinical infertility.
Collapse
Affiliation(s)
- Qiuzi Shen
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (Q.S.); (X.W.); (J.C.); (C.H.)
| | - Xiaoyu Wu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (Q.S.); (X.W.); (J.C.); (C.H.)
| | - Jin Chen
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (Q.S.); (X.W.); (J.C.); (C.H.)
| | - Chao He
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (Q.S.); (X.W.); (J.C.); (C.H.)
| | - Zehao Wang
- School of Management, Huazhong University of Science and Technology, Wuhan 430074, China;
| | - Boyan Zhou
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (Q.S.); (X.W.); (J.C.); (C.H.)
| | - Huiping Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (Q.S.); (X.W.); (J.C.); (C.H.)
| |
Collapse
|
3
|
Matsuo M, Yuan J, Kim YS, Dewar A, Fujita H, Dey SK, Sun X. Targeted depletion of uterine glandular Foxa2 induces embryonic diapause in mice. eLife 2022; 11:78277. [PMID: 35861728 PMCID: PMC9355561 DOI: 10.7554/elife.78277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 07/20/2022] [Indexed: 11/13/2022] Open
Abstract
Embryonic diapause is a reproductive strategy in which embryo development and growth is temporarily arrested within the uterus to ensure the survival of neonates and mothers during unfavorable conditions. Pregnancy is reinitiated when conditions become favorable for neonatal survival. The mechanism of how the uterus enters diapause in various species remains unclear. Mice with uterine depletion of Foxa2, a transcription factor, are infertile. In this study, we show that dormant blastocysts are recovered from these mice on day 8 of pregnancy with persistent expression of uterine Msx1, a gene critical to maintaining the uterine quiescent state, suggesting that these mice enter embryonic diapause. Leukemia inhibitory factor (LIF) can resume implantation in these mice. Although estrogen is critical for implantation in progesterone-primed uterus, our current model reveals that FOXA2-independent estrogenic effects are detrimental to sustaining uterine quiescence. Interestingly, progesterone and anti-estrogen can prolong uterine quiescence in the absence of FOXA2. Although we find that Msx1 expression persists in the uterus deficient in Foxa2, the complex relationship of FOXA2 with Msx genes and estrogen receptors remains to be explored.
Collapse
Affiliation(s)
- Mitsunori Matsuo
- Division of Reproductive Sciences, Cincinnati Children's Hospital Medical Center, Cincinnati, United States
| | - Jia Yuan
- Division of Reproductive Sciences, Cincinnati Children's Hospital Medical Center, Cincinnati, United States
| | - Yeon Sun Kim
- Division of Reproductive Sciences, Cincinnati Children's Hospital Medical Center, Cincinnati, United States
| | - Amanda Dewar
- Division of Reproductive Sciences, Cincinnati Children's Hospital Medical Center, Cincinnati, United States
| | - Hidetoshi Fujita
- Department of Biomedical Engineering, Osaka Institute of Technology, Osaka, Japan
| | - Sudhansu K Dey
- Division of Reproductive Sciences, Cincinnati Children's Hospital Medical Center, Cincinnati, United States
| | - Xiaofei Sun
- Division of Reproductive Sciences, Cincinnati Children's Hospital Medical Center, Cincinnati, United States
| |
Collapse
|
4
|
Šućurović S, Nikolić T, Brosens JJ, Mulac-Jeričević B. Analysis of heart and neural crest derivatives-expressed protein 2 (HAND2)-progesterone interactions in peri-implantation endometrium†. Biol Reprod 2021; 102:1111-1121. [PMID: 31982918 DOI: 10.1093/biolre/ioaa013] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 10/21/2019] [Accepted: 01/23/2020] [Indexed: 12/31/2022] Open
Abstract
Implantation is restricted to a narrow window when the local endometrial microenvironment is supportive of the invading embryo. The ovarian steroid hormones estrogen (E) and progesterone (P) are principal regulators of uterine receptivity. Suppression of E-dependent proliferation of luminal epithelium (LE) by P is mandatory for embryo implantation. Here, we report that the balance of E receptor α (ERα) and P receptors (PR) activity controls HAND2 expression, a key transcription factor that determines the fate of the implanting embryo and thereby pregnancy outcome. As a model, we used wild-type mice as well as mice in which either both PR isoforms or the A-isoform was genetically ablated (PRKO and PRAKO, respectively). Detailed spatiotemporal analyses of PR, HAND2, and ERα expression at implantation site demonstrated co-expression of HAND2 and PR but not ERα. Furthermore, in hormonally treated ovariectomized WT, PRAKO and PRKO mice, E suppresses endometrial HAND2 expression. Adding P together with E partially rescues HAND2 expression in WT, but not PRAKO and PRKO animals. Therefore, infertility in PRAKO mice is at least in part associated with the loss of PR-A-regulated HAND2 expression.
Collapse
Affiliation(s)
- Sandra Šućurović
- Department of Physiology and Immunology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia and
| | - Tamara Nikolić
- Department of Physiology and Immunology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia and
| | - Jan J Brosens
- Division of Biomedical Sciences, Warwick Medical School, Coventry, United Kingdom
| | - Biserka Mulac-Jeričević
- Department of Physiology and Immunology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia and
| |
Collapse
|
5
|
Wang S, Larina IV. In vivo dynamic 3D imaging of oocytes and embryos in the mouse oviduct. Cell Rep 2021; 36:109382. [PMID: 34260920 PMCID: PMC8344084 DOI: 10.1016/j.celrep.2021.109382] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 03/26/2021] [Accepted: 06/21/2021] [Indexed: 12/04/2022] Open
Abstract
Developmental biologists have always relied on imaging to shed light on dynamic cellular events. However, processes such as mammalian fertilization and embryogenesis are generally inaccessible for direct imaging. In consequence, how the oviduct (fallopian tube) facilitates the transport of gametes and preimplantation embryos continues to be unanswered. Here we present a combination of intravital window and optical coherence tomography for dynamic, volumetric, in vivo imaging of oocytes and embryos as they are transported through the mouse oviduct. We observed location-dependent circling, oscillating, and long-distance bi-directional movements of oocytes and embryos that suggest regulatory mechanisms driving transport and question established views in the field. This in vivo imaging approach can be combined with a variety of genetic and pharmacological manipulations for live functional analysis, bringing the potential to investigate reproductive physiology in its native state. Wang and Larina present in vivo volumetric imaging of oocytes and embryos as they are transported through the mouse oviduct with optical coherence tomography and an intravital microscopy. The study reveals complex dynamics of oocytes and embryos that suggest a regulatory role of cilia and oviductal contractions in driving the transport.
Collapse
Affiliation(s)
- Shang Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA.
| | - Irina V Larina
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, USA.
| |
Collapse
|
6
|
Anamthathmakula P, Winuthayanon W. Prostaglandin-Endoperoxide Synthase 2 (PTGS2) in the Oviduct: Roles in Fertilization and Early Embryo Development. Endocrinology 2021; 162:6128831. [PMID: 33539521 PMCID: PMC7901659 DOI: 10.1210/endocr/bqab025] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Indexed: 11/19/2022]
Abstract
The mammalian oviduct is a dynamic organ where important events such as final maturation of oocytes, transport of gametes, sperm capacitation, fertilization, embryo development, and transport take place. Prostaglandin-endoperoxide synthase 2 (PTGS2), also known as cyclooxygenase 2 (COX-2), is the rate-limiting enzyme in the production of prostaglandins (PGs) and plays an essential role during early pregnancy, including ovulation, fertilization, implantation, and decidualization. Even though the maternal-embryo communication originates in the oviduct, not many studies have systemically investigated PTGS2 signaling during early development. Most of the studies investigating implantation and decidualization processes in Ptgs2-/- mice employed embryo transfer into the uterus, thereby bypassing the mammalian oviduct. Consequently, an understanding of the mechanistic action as well as the regulation of PTGS2 and derived PGs in oviductal functions is far from complete. In this review, we aim to focus on the importance of PTGS2 and associated PGs signaling in the oviduct particularly in humans, farm animals, and laboratory rodents to provide a broad perspective to guide further research in this field. Specifically, we review the role of PTGS2-derived PGs in fertilization, embryo development, and transport. We focus on the actions of ovarian steroid hormones on PTGS2 regulation in the oviduct. Understanding of cellular PTGS2 function during early embryo development and transport in the oviduct will be an important step toward a better understanding of reproduction and may have potential implication in the assisted reproductive technology.
Collapse
Affiliation(s)
- Prashanth Anamthathmakula
- School of Molecular Biosciences, Center for Reproductive Biology, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
- Correspondence: Wipawee Winuthayanon, PhD, BSN,Washington State University, Pullman, WA 99164, USA. E-mail: ; and Prashanth Anamthathmakula, PhD, Washington State University, Pullman, WA 99164, USA. E-mail:
| | - Wipawee Winuthayanon
- School of Molecular Biosciences, Center for Reproductive Biology, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
- Correspondence: Wipawee Winuthayanon, PhD, BSN,Washington State University, Pullman, WA 99164, USA. E-mail: ; and Prashanth Anamthathmakula, PhD, Washington State University, Pullman, WA 99164, USA. E-mail:
| |
Collapse
|
7
|
Comparative Analysis of Mouse Decidualization Models at the Molecular Level. Genes (Basel) 2020; 11:genes11080935. [PMID: 32823685 PMCID: PMC7465532 DOI: 10.3390/genes11080935] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 07/28/2020] [Accepted: 08/11/2020] [Indexed: 02/06/2023] Open
Abstract
The mouse is widely used to study decidualization and there are three well-established mouse models of decidualization, namely natural pregnancy decidualization (NPD), artificial decidualization (AD), and in vitro decidualization (IVD). However, the extent of similarity and difference between these models at the molecular level remains largely unknown. Here, we performed a comparative analysis using the RNA-seq approach. In the NPD model, which is thought to be the golden standard of mouse decidualization, we found a total of 5277 differentially expressed genes, with 3158 genes being up-regulated and 2119 genes being down-regulated. A total of 4294 differentially expressed genes were identified in the AD model: 1127 up-regulated genes and 3167 down-regulated genes. In comparison to NPD, 1977 genes were consistently expressed, whereas only 217 genes were inconsistently expressed, indicating that AD is a reliable model for mouse decidualization. In the IVD model, RNA-seq analysis revealed that 513 genes were up-regulated and 988 genes were down-regulated. Compared to NPD, 310 genes were consistently expressed, whereas 456 genes were inconsistently expressed. Moreover, although the decidualization marker Prl8a2 (prolactin family 8 subfamily a member 2) was up-regulated, the widely-used marker Alpl (alkaline phosphatase liver/bone/kidney) was down-regulated in the IVD model. Therefore, we suggest that the IVD model should be optimized to mimic NPD at the transcriptomic level. Our study contributes to an increase in the knowledge about mouse models of decidualization.
Collapse
|
8
|
Zhu C, Hu W, Zhao M, Huang MY, Cheng HZ, He JP, Liu JL. The Pre-Implantation Embryo Induces Uterine Inflammatory Reaction in Mice. Reprod Sci 2020; 28:60-68. [PMID: 32651899 DOI: 10.1007/s43032-020-00259-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 07/02/2020] [Indexed: 10/23/2022]
Abstract
It has been well established that uterine function during the peri-implantation period is precisely regulated by ovarian estrogen and progesterone. The embryo enters the uterine cavity before implantation. However, the impact of pre-implantation embryo on uterine function is largely unknown. In the present study, we performed RNA-seq analysis of mouse uterus on day 4 morning of natural pregnancy (with embryos in the uterus) and pseudo-pregnancy (without embryos in the uterus). We found that 146 genes were upregulated, and 77 genes were downregulated by the pre-implantation embryo. Gene ontology and gene network analysis highlighted the activation of inflammatory reaction in the uterus. By examining the promoter region of differentially expressed genes, we found that NF-kappaB was a causal transcription factor. Finally, we validated 4 inflammation-related genes by quantitative RT-PCR. These 4 genes are likely the main mediators of the inflammatory reaction in the uterus triggered by the pre-implantation embryo. Our data indicated that the pre-implantation embryo causes uterine inflammatory reaction, which in turn might contribute to the establishment of uterine receptivity and embryo implantation.
Collapse
Affiliation(s)
- Can Zhu
- College of Veterinary Medicine, South China Agricultural University, No.483 Wushan Road, Tianhe District, Guangzhou, 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Wei Hu
- College of Life Sciences and Resource Environment, Yichun University, Yichun, 336000, China
| | - Miao Zhao
- College of Veterinary Medicine, South China Agricultural University, No.483 Wushan Road, Tianhe District, Guangzhou, 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Ming-Yu Huang
- College of Veterinary Medicine, South China Agricultural University, No.483 Wushan Road, Tianhe District, Guangzhou, 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Hao-Zhuang Cheng
- College of Veterinary Medicine, South China Agricultural University, No.483 Wushan Road, Tianhe District, Guangzhou, 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Jia-Peng He
- College of Veterinary Medicine, South China Agricultural University, No.483 Wushan Road, Tianhe District, Guangzhou, 510642, China.,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China
| | - Ji-Long Liu
- College of Veterinary Medicine, South China Agricultural University, No.483 Wushan Road, Tianhe District, Guangzhou, 510642, China. .,Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China.
| |
Collapse
|
9
|
O'Neil EV, Brooks K, Burns GW, Ortega MS, Denicol AC, Aguiar LH, Pedroza GH, Benne J, Spencer TE. Prostaglandin-endoperoxide synthase 2 is not required for preimplantation ovine conceptus development in sheep. Mol Reprod Dev 2019; 87:142-151. [PMID: 31746519 DOI: 10.1002/mrd.23300] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 10/28/2019] [Indexed: 01/05/2023]
Abstract
Conceptus development and elongation is required for successful pregnancy establishment in ruminants and is coincident with the production of interferon τ (IFNT) and prostaglandins (PGs). In both the conceptus trophectoderm and endometrium, PGs are primarily synthesized through a prostaglandin-endoperoxide synthase 2 (PTGS2) pathway and modify endometrial gene expression and thus histotroph composition in the uterine lumen to promote conceptus growth and survival. Chemical inhibition of PG production by both the endometrium and the conceptus prevented elongation in sheep. However, the contributions of conceptus-derived PGs to preimplantation conceptus development remain unclear. In this study, CRISPR-Cas9 genome editing was used to inactivate PTGS2 in ovine embryos to determine the role of PTGS2-derived PGs in conceptus development and elongation. PTGS2 edited conceptuses produced fewer PGs, but secreted similar amounts of IFNT to their Cas9 control counterparts and elongated normally. Expression of PTGS1 was lower in PTGS2 edited conceptuses, but PPARG expression and IFNT secretion were unaffected. Content of PGs in the uterine lumen was similar as was gene expression in the endometrium of ewes who received either Cas9 control or PTGS2 edited conceptuses. These results support the idea that intrinsic PTGS2-derived PGs are not required for preimplantation embryo or conceptus survival and development in sheep.
Collapse
Affiliation(s)
- Eleanore V O'Neil
- Division of Animal Sciences, University of Missouri, Columbia, Missouri
| | - Kelsey Brooks
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Portland, Oregon
| | - Gregory W Burns
- Department of Obstetrics, Gynecology and Reproductive Biology, Michigan State University, Grand Rapids, Michigan
| | - Martha S Ortega
- Division of Animal Sciences, University of Missouri, Columbia, Missouri
| | - Anna C Denicol
- Department of Animal Sciences, University of California Davis, Davis, California
| | - Luis H Aguiar
- Department of Animal Sciences, University of California Davis, Davis, California
| | - Gabriela H Pedroza
- Department of Animal Sciences, University of California Davis, Davis, California
| | - Joshua Benne
- Division of Animal Sciences, University of Missouri, Columbia, Missouri
| | - Thomas E Spencer
- Division of Animal Sciences, University of Missouri, Columbia, Missouri
| |
Collapse
|
10
|
Khalaf AA, Ahmed WMS, Moselhy WA, Abdel-Halim BR, Ibrahim MA. Protective effects of selenium and nano-selenium on bisphenol-induced reproductive toxicity in male rats. Hum Exp Toxicol 2018; 38:398-408. [DOI: 10.1177/0960327118816134] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Bisphenol A (BPA) is a widespread compound associated with the manufacture of many consumer products. The BPA-induced reproductive toxicity was reported to be mainly attributed to oxidative stress. However, the role of antioxidants usage to decrease the injurious effects of BPA, on male reproductive functions, remains to unveil. The present research is established to evaluate the role of selenium (Se) and its nano form (NSe) as protective agents to alleviate BPA-induced testicular toxicity. Ninety mature albino male rats were assigned into six equal groups: negative control; orally BPA 150 mg/kg; Se 3 mg/kg; NSe 2 mg/kg; both BPA 150 mg/kg and Se 3 mg/kg; and BPA 150 mg/kg + NSe 2 mg/kg. The experiment lasted for 70 consecutive days, and then serum was collected for estimation of prostatic acid phosphatase. Testicular tissues were subjected to measurement of antioxidant status, lipid peroxidation, DNA damage, and expression of some apoptotic genes. Our results reported that BPA-induced marked testicular damage evidenced by significant elevations in serum prostatic acid phosphatase activity, malondialdehyde levels, a decrease in testicular catalase activity and reduced glutathione level. Moreover, marked DNA internucleosomal fragmentation pattern as well as upregulation of cyclooxygenase-2 and estrogen receptor-2 NSe genes were detected. Coadministration of Se and NSe attenuated the reproductive toxicity induced by BPA via improvement of the antioxidant activity, genetic changes, and restoration of testicular tissue nearly as control one. These results indicated that both Se and NSe forms could be used as reproductive protective agents against the detrimental effect induced by BPA. However, the NSe surpassed the selenium in modulating the DNA laddering, and the studied gene expression levels, and offered a potent reproductive protection.
Collapse
Affiliation(s)
- AA Khalaf
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - WMS Ahmed
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - WA Moselhy
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - BR Abdel-Halim
- Department of Theriogenology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - MA Ibrahim
- Department of Biochemistry, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| |
Collapse
|
11
|
Isoform-Specific Compensation of Cyclooxygenase (Ptgs) Genes during Implantation and Late-Stage Pregnancy. Sci Rep 2018; 8:12097. [PMID: 30108257 PMCID: PMC6092371 DOI: 10.1038/s41598-018-30636-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 08/03/2018] [Indexed: 01/18/2023] Open
Abstract
The participation of cyclooxygenase (COX) in embryo implantation and parturition has been studied extensively. However, the distinct role of the two COX isoforms in these processes still remains unclear. Using three characterized mouse lines where the Ptgs1 and Ptgs2 genes substitute for one another, this study focused on the reproductive significance of their distinct roles and potential biological substitution. In both non-gravid and gravid uteri, the knock-in COX-2 is expressed constitutively, whereas the knock-in COX-1 is slightly induced in early implantation. The delayed onset of parturition previously found in COX-1 null mice was corrected by COX-2 exchange in COX-2>COX-1 mice, with normal term pregnancy, gestation length and litter size. In contrast, loss of native COX-2 in COX-1>COX-2 mice resulted in severely impaired reproductive functions. Knock-in COX-1 failed to substitute for the loss of COX-2 in COX-1>COX-2 mice during implantation, indicating that COX-1 may be replaced by COX-2, but not vice versa. A panel of prostaglandins detected in uterus and ovary demonstrates that prostaglandin biosynthesis preferentially depends on native COX-1, but not COX-2. More interestingly, preferential compensations by the COX isoforms were sustained despite weak dependency on their role in prostaglandin biosynthesis in the uterus and ovary.
Collapse
|
12
|
Lee-Thacker S, Choi Y, Taniuchi I, Takarada T, Yoneda Y, Ko C, Jo M. Core Binding Factor β Expression in Ovarian Granulosa Cells Is Essential for Female Fertility. Endocrinology 2018; 159:2094-2109. [PMID: 29554271 PMCID: PMC5905395 DOI: 10.1210/en.2018-00011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 03/11/2018] [Indexed: 02/06/2023]
Abstract
Core binding factor β (CBFβ) is a non-DNA-binding partner of all RUNX proteins and critical for transcription activity of CBF transcription factors (RUNXs/CBFβ). In the ovary, the expression of Runx1 and Runx2 is highly induced by the luteinizing hormone (LH) surge in ovulatory follicles, whereas Cbfb is constitutively expressed. To investigate the physiological significance of CBFs in the ovary, the current study generated two different conditional mutant mouse models in which granulosa cell expression of Cbfb and Runx2 was reduced by Cre recombinase driven by an Esr2 promoter. Cbfbgc-/- and Cbfbgc-/- × Runx2gc+/- mice exhibited severe subfertility and infertility, respectively. In the ovaries of both mutant mice, follicles develop normally, but the majority of preovulatory follicles failed to ovulate either in response to human chorionic gonadotropin administration in pregnant mare serum gonadotropin-primed immature animals or after the LH surge at 5 months of age. Morphological and physiological changes in the corpus luteum of these mutant mice revealed the reduced size, progesterone production, and vascularization, as well as excessive lipid accumulation. In granulosa cells of periovulatory follicles and corpora lutea of these mice, the expression of Edn2, Ptgs1, Lhcgr, Sfrp4, Wnt4, Ccrl2, Lipg, Saa3, and Ptgfr was also drastically reduced. In conclusion, the current study provided in vivo evidence that CBFβ plays an essential role in female fertility by acting as a critical cofactor of CBF transcription factor complexes, which regulate the expression of specific key ovulatory and luteal genes, thus coordinating the ovulatory process and luteal development/function in mice.
Collapse
Affiliation(s)
- Somang Lee-Thacker
- Department of Obstetrics and Gynecology, Chandler Medical Center, University of Kentucky, Lexington, Kentucky
| | - Yohan Choi
- Department of Obstetrics and Gynecology, Chandler Medical Center, University of Kentucky, Lexington, Kentucky
| | - Ichiro Taniuchi
- Laboratory for Transcriptional Regulation, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
| | - Takeshi Takarada
- Department of Regenerative Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yukio Yoneda
- Section of Prophylactic Pharmacology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - CheMyong Ko
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinoisa
| | - Misung Jo
- Department of Obstetrics and Gynecology, Chandler Medical Center, University of Kentucky, Lexington, Kentucky
- Correspondence: Misung Jo, PhD, Department of Obstetrics and Gynecology, University of Kentucky, 800 Rose Street, Room MS 335, Lexington, Kentucky 40536. E-mail:
| |
Collapse
|
13
|
Li X, Mazaleuskaya LL, Yuan C, Ballantyne LL, Meng H, Smith WL, FitzGerald GA, Funk CD. Flipping the cyclooxygenase ( Ptgs) genes reveals isoform-specific compensatory functions. J Lipid Res 2017; 59:89-101. [PMID: 29180445 DOI: 10.1194/jlr.m079996] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 11/21/2017] [Indexed: 12/22/2022] Open
Abstract
Two prostaglandin (PG) H synthases encoded by Ptgs genes, colloquially known as cyclooxygenase (COX)-1 and COX-2, catalyze the formation of PG endoperoxide H2, the precursor of the major prostanoids. To address the functional interchangeability of these two isoforms and their distinct roles, we have generated COX-2>COX-1 mice whereby Ptgs2 is knocked in to the Ptgs1 locus. We then "flipped" Ptgs genes to successfully create the Reversa mouse strain, where knock-in COX-2 is expressed constitutively and knock-in COX-1 is lipopolysaccharide (LPS) inducible. In macrophages, flipping the two Ptgs genes has no obvious impact on COX protein subcellular localization. COX-1 was shown to compensate for PG synthesis at high concentrations of substrate, whereas elevated LPS-induced PG production was only observed for cells expressing endogenous COX-2. Differential tissue-specific patterns of expression of the knock-in proteins were evident. Thus, platelets from COX-2>COX-1 and Reversa mice failed to express knock-in COX-2 and, therefore, thromboxane (Tx) production in vitro and urinary Tx metabolite formation in COX-2>COX-1 and Reversa mice in vivo were substantially decreased relative to WT and COX-1>COX-2 mice. Manipulation of COXs revealed isoform-specific compensatory functions and variable degrees of interchangeability for PG biosynthesis in cells/tissues.
Collapse
Affiliation(s)
- Xinzhi Li
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Liudmila L Mazaleuskaya
- Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Chong Yuan
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, MI
| | - Laurel L Ballantyne
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Hu Meng
- Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - William L Smith
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, MI
| | - Garret A FitzGerald
- Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Colin D Funk
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| |
Collapse
|
14
|
Aikawa S, Kano K, Inoue A, Wang J, Saigusa D, Nagamatsu T, Hirota Y, Fujii T, Tsuchiya S, Taketomi Y, Sugimoto Y, Murakami M, Arita M, Kurano M, Ikeda H, Yatomi Y, Chun J, Aoki J. Autotaxin-lysophosphatidic acid-LPA 3 signaling at the embryo-epithelial boundary controls decidualization pathways. EMBO J 2017; 36:2146-2160. [PMID: 28588064 PMCID: PMC5509998 DOI: 10.15252/embj.201696290] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Revised: 04/12/2017] [Accepted: 05/02/2017] [Indexed: 12/21/2022] Open
Abstract
During pregnancy, up-regulation of heparin-binding (HB-) EGF and cyclooxygenase-2 (COX-2) in the uterine epithelium contributes to decidualization, a series of uterine morphological changes required for placental formation and fetal development. Here, we report a key role for the lipid mediator lysophosphatidic acid (LPA) in decidualization, acting through its G-protein-coupled receptor LPA3 in the uterine epithelium. Knockout of Lpar3 or inhibition of the LPA-producing enzyme autotaxin (ATX) in pregnant mice leads to HB-EGF and COX-2 down-regulation near embryos and attenuates decidual reactions. Conversely, selective pharmacological activation of LPA3 induces decidualization via up-regulation of HB-EGF and COX-2. ATX and its substrate lysophosphatidylcholine can be detected in the uterine epithelium and in pre-implantation-stage embryos, respectively. Our results indicate that ATX-LPA-LPA3 signaling at the embryo-epithelial boundary induces decidualization via the canonical HB-EGF and COX-2 pathways.
Collapse
Affiliation(s)
- Shizu Aikawa
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Kuniyuki Kano
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan.,Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Chiyoda-ku, Tokyo, Japan
| | - Asuka Inoue
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan.,Japan Science and Technology Agency, Precursory Research for Embryonic Science and Technology (PRESTO), Kawaguchi, Saitama, Japan
| | - Jiao Wang
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Daisuke Saigusa
- Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Chiyoda-ku, Tokyo, Japan.,Department of Integrative Genomics, Tohoku Medical Megabank, Tohoku University, Sendai, Miyagi, Japan
| | - Takeshi Nagamatsu
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Yasushi Hirota
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Tomoyuki Fujii
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Soken Tsuchiya
- Department of Pharmaceutical Biochemistry, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yoshitaka Taketomi
- Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan.,Center for Disease Biology and Integrative Medicine Graduate School of Medicine The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Yukihiko Sugimoto
- Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Chiyoda-ku, Tokyo, Japan.,Department of Pharmaceutical Biochemistry, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Makoto Murakami
- Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Chiyoda-ku, Tokyo, Japan.,Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan.,Center for Disease Biology and Integrative Medicine Graduate School of Medicine The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Makoto Arita
- RIKEN, Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan.,Graduate School of Pharmaceutical Sciences, Keio University, Minato-ku, Tokyo, Japan
| | - Makoto Kurano
- Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Chiyoda-ku, Tokyo, Japan.,Department of Clinical Laboratory, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Hitoshi Ikeda
- Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Chiyoda-ku, Tokyo, Japan.,Department of Clinical Laboratory, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Yutaka Yatomi
- Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Chiyoda-ku, Tokyo, Japan.,Department of Clinical Laboratory, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Jerold Chun
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Junken Aoki
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, Japan .,Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Chiyoda-ku, Tokyo, Japan
| |
Collapse
|
15
|
Cuevas CA, Tapia-Pizarro A, Salvatierra AM, Munroe DJ, Velasquez L, Croxatto HB. Effect of single post-ovulatory administration of mifepristone (RU486) on transcript profile during the receptive period in human endometrium. Reproduction 2016; 151:331-49. [DOI: 10.1530/rep-15-0458] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 01/11/2016] [Indexed: 12/24/2022]
Abstract
Progesterone regulates uterine function during the luteal phase and is essential for the acquisition of endometrial receptivity. The objective of the present study was to identify endometrial transcripts whose expression is altered during the window of implantation after the administration of 200 mg of the antiprogestin mifepristone, 48 h after the LH peak (LH+2, LH+0=LH peak), and to determine the relationship of these transcripts with those regulated during the acquisition of receptivity. Endometrial samples were obtained in LH+7 from seven women of proven fertility, each one contributing with one cycle treated with placebo and another with mifepristone. Additionally, endometrial samples were obtained in LH+2 and LH+7 during a single untreated spontaneous cycle from seven normal fertile women as a reference. DNA microarrays were used to identify transcripts significantly regulated (defined as ≥2.0-fold change with false discovery rate below 1% usingt-test) with the administration of mifepristone vs placebo, or during the transition from pre-receptive to receptive (LH+2 vs LH+7). Approximately 2000 transcripts were significantly regulated in both comparisons (mifepristone vs placebo and LH+2 vs LH+7), but only 777 of them were coincident and displayed opposite regulation except for 25. The mRNA level for eight selected genes regulated by mifepristone was confirmed by real-time RT-PCR. We conclude that not all changes in endometrial transcript levels occurring in the transition from LH+2 to LH+7 seem to be regulated by the progesterone receptor and ∼37% of the genes whose transcript levels changed by effect of mifepristone could be associated with the acquisition of receptivity.
Collapse
|
16
|
Kyle JE, Zhang X, Weitz KK, Monroe ME, Ibrahim YM, Moore RJ, Cha J, Sun X, Lovelace ES, Wagoner J, Polyak SJ, Metz TO, Dey SK, Smith RD, Burnum-Johnson KE, Baker ES. Uncovering biologically significant lipid isomers with liquid chromatography, ion mobility spectrometry and mass spectrometry. Analyst 2016; 141:1649-59. [PMID: 26734689 PMCID: PMC4764491 DOI: 10.1039/c5an02062j] [Citation(s) in RCA: 172] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Understanding how biological molecules are generated, metabolized and eliminated in living systems is important for interpreting processes such as immune response and disease pathology. While genomic and proteomic studies have provided vast amounts of information over the last several decades, interest in lipidomics has also grown due to improved analytical technologies revealing altered lipid metabolism in type 2 diabetes, cancer, and lipid storage disease. Mass spectrometry (MS) measurements are currently the dominant approach for characterizing the lipidome by providing detailed information on the spatial and temporal composition of lipids. However, interpreting lipids' biological roles is challenging due to the existence of numerous structural and stereoisomers (i.e. distinct acyl chain and double-bond positions), which are often unresolvable using present approaches. Here we show that combining liquid chromatography (LC) and structurally-based ion mobility spectrometry (IMS) measurement with MS analyses distinguishes lipid isomers and allows insight into biological and disease processes.
Collapse
Affiliation(s)
- Jennifer E Kyle
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.
| | - Xing Zhang
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.
| | - Karl K Weitz
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.
| | - Matthew E Monroe
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.
| | - Yehia M Ibrahim
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.
| | - Ronald J Moore
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.
| | - Jeeyeon Cha
- Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Xiaofei Sun
- Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Erica S Lovelace
- Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
| | - Jessica Wagoner
- Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
| | - Stephen J Polyak
- Department of Laboratory Medicine, University of Washington, Seattle, WA, USA and Department of Global Health, University of Washington, Seattle, WA, USA
| | - Thomas O Metz
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.
| | | | - Richard D Smith
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.
| | | | - Erin S Baker
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA.
| |
Collapse
|
17
|
Mostafa T, Rashed L, Taymour M. Seminal cyclooxygenase relationship with oxidative stress in infertile oligoasthenoteratozoospermic men with varicocele. Andrologia 2016; 48:137-42. [PMID: 25906828 DOI: 10.1111/and.12423] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2015] [Indexed: 02/05/2023] Open
Abstract
This study aimed to assess the relation of seminal cyclooxygenase COX-1, COX-2 with oxidative stress in infertile oligoasthenoteratozoospermic (OAT) men with varicocele (Vx). In all, 128 men were allocated into fertile men, fertile men with Vx, infertile OAT men without Vx and infertile OAT men with Vx. They were subjected to history taking, clinical examination and semen analysis. Also, seminal COX-1, COX-2, malondialdehyde (MDA) and glutathione peroxidase (GPx) were estimated. Mean levels of seminal COX-1, COX-2 were over-expressed, the mean level of seminal MDA was significantly increased, and the mean level of seminal GPx was significantly decreased in infertile OAT men with Vx compared with other groups. Seminal COX-1 and COX-2 were over-expressed in cases with Vx grade III compared with Vx grades I, II cases and in cases with bilateral Vx compared with unilateral Vx. There was significant negative correlation between seminal COX-1 and COX-2 with sperm concentration, sperm motility, sperm normal morphology, seminal GPx and significant positive correlation with seminal MDA. It is concluded that seminal COX-1 and COX-2 are over-expressed in infertile OAT men with Vx compared with fertile men with/without and infertile OAT men without Vx being associated with oxidative stress, Vx grade and Vx laterality.
Collapse
Affiliation(s)
- T Mostafa
- Andrology and Sexology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - L Rashed
- Medical Biochemistry Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - M Taymour
- Dermatology and Andrology Department, Egypt Air Hospital, Cairo, Egypt
| |
Collapse
|
18
|
Liu JL, Zuo RJ, Peng Y, Fu YS. The Impact of Multiparity on Uterine Gene Expression and Decidualization in Mice. Reprod Sci 2015; 23:687-94. [PMID: 26494701 DOI: 10.1177/1933719115612131] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
It has been well established that a previous pregnancy exhibits a beneficial effect on the subsequent pregnancy. However, the underlying mechanisms have not been defined. We hypothesized that multiparity may affect decidualization process during early pregnancy. To test this hypothesis, we analyzed global gene changes associated with multiparity in the mouse uterus using RNA-sequencing (RNA-seq). We identified a total of 131 differentially expressed genes (fold change > 2 and false discovery rate < 0.05), of which 58 were downregulated and 73 genes were upregulated in the second pregnancy (SP) compared to the first pregnancy. Functional clustering analysis showed that genes involved in stress response were significantly enriched. Most importantly, a significant portion of differentially expressed genes, 14 genes or 10.7%, overlapped with the gene list associated with decidualization. Quantitative reverse transcription (RT) polymerase chain reaction (qRT-PCR) analysis confirmed a decreased expression of 4 genes (Klk1, kallikrein 1; H2-Eb1, histocompatibility 2 class II antigen E beta; Mmp7, matrix metallopeptidase 7; Pdpn, podoplanin) and an increase in expression of 2 genes (Thy1, thymus cell antigen 1; Ptgs2, prostaglandin-endoperoxide synthase 2) in SP. Beyond protein-coding genes, we also identified a differentially expressed long noncoding RNA AI506816. Our data provide new insights into the molecular mechanisms underlying the beneficial effect of multiparity.
Collapse
Affiliation(s)
- Ji-Long Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Ru-Juan Zuo
- College of Life Science, Xiamen University, Xiamen, China
| | - Ying Peng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yong-Sheng Fu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| |
Collapse
|
19
|
Cha J, Dey SK. Cadence of procreation: orchestrating embryo-uterine interactions. Semin Cell Dev Biol 2014; 34:56-64. [PMID: 24862857 DOI: 10.1016/j.semcdb.2014.05.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Revised: 04/06/2014] [Accepted: 05/06/2014] [Indexed: 01/07/2023]
Abstract
Embryo implantation in eutherian mammals is a highly complex process and requires reciprocal communication between different cell types of the embryo at the blastocyst stage and receptive uterus. The events of implantation are dynamic and highly orchestrated over a species-specific period of time with distinctive and overlapping expression of many genes. Delayed implantation in different species has helped elucidate some of the intricacies of implantation timing and different modes of the implantation process. How these events are coordinated in time and space are not clearly understood. We discuss potential regulators of the precise timing of these events with respect to central and local clock mechanisms. This review focuses on the timing and synchronization of early pregnancy events in mouse and consequences of their aberrations at later stages of pregnancy.
Collapse
Affiliation(s)
- Jeeyeon Cha
- Division of Reproductive Sciences, Cincinnati Children's Research Foundation, Cincinnati, OH 45229, United States
| | - Sudhansu K Dey
- Division of Reproductive Sciences, Cincinnati Children's Research Foundation, Cincinnati, OH 45229, United States.
| |
Collapse
|
20
|
Nagamatsu T, Iwasawa-Kawai Y, Ichikawa M, Kawana K, Yamashita T, Osuga Y, Fujii T, Schust DJ. Emerging roles for lysophospholipid mediators in pregnancy. Am J Reprod Immunol 2014; 72:182-91. [PMID: 24689547 DOI: 10.1111/aji.12239] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 02/25/2014] [Indexed: 12/22/2022] Open
Abstract
Recent progress in lipid research has unveiled new biologic roles for lysophospholipids as mediators of intercellular signaling. Lysophosphatidic acid (LPA) and sphingosine 1-phosphate (S1P) are representative lysophospholipids. Accumulating evidence suggests that, acting as intercellular mediators, these and other lysophospholipids may play important roles in physiological and pathological situations. This review discusses the possible involvement of LPA and S1P in reproductive processes, with a focus on the regulatory mechanisms of pregnancy maintenance. As LPA promotes prostaglandin synthesis, mediators in the LPA pathway may also play a significant role in implantation and parturition. S1P signaling is thought to be essential in vascular formation within the uteroplacental unit and in fetomaternal immunologic interactions. Derangements in either one of these lysophospholipid signaling pathways could result in pregnancy complications that may include implantation failure, preeclampsia, and preterm labor.
Collapse
Affiliation(s)
- Takeshi Nagamatsu
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Kobayashi H, Higashiura Y, Koike N, Akasaka J, Uekuri C, Iwai K, Niiro E, Morioka S, Yamada Y. Genes Downregulated in Endometriosis Are Located Near the Known Imprinting Genes. Reprod Sci 2014; 21:966-972. [PMID: 24615936 DOI: 10.1177/1933719114526473] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
There is now accumulating evidence that endometriosis is a disease associated with an epigenetic disorder. Genomic imprinting is an epigenetic phenomenon known to regulate DNA methylation of either maternal or paternal alleles. We hypothesize that hypermethylated endometriosis-associated genes may be enriched at imprinted gene loci. We sought to determine whether downregulated genes associated with endometriosis susceptibility are associated with chromosomal location of the known paternally and maternally expressed imprinting genes. Gene information has been gathered from National Center for Biotechnology Information database geneimprint.com. Several researchers have identified specific loci with strong DNA methylation in eutopic endometrium and ectopic lesion with endometriosis. Of the 29 hypermethylated genes in endometriosis, 19 genes were located near 45 known imprinted foci. There may be an association of the genomic location between genes specifically downregulated in endometriosis and epigenetically imprinted genes.
Collapse
Affiliation(s)
- Hiroshi Kobayashi
- Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Yumi Higashiura
- Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Natsuki Koike
- Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Juria Akasaka
- Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Chiharu Uekuri
- Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Kana Iwai
- Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Emiko Niiro
- Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Sachiko Morioka
- Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| | - Yuki Yamada
- Department of Obstetrics and Gynecology, Nara Medical University, Nara, Japan
| |
Collapse
|
22
|
Chen Q, Zhang Y, Elad D, Jaffa AJ, Cao Y, Ye X, Duan E. Navigating the site for embryo implantation: Biomechanical and molecular regulation of intrauterine embryo distribution. Mol Aspects Med 2013; 34:1024-42. [DOI: 10.1016/j.mam.2012.07.017] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 07/31/2012] [Indexed: 01/03/2023]
|
23
|
Beltrame JS, Sordelli MS, Cella M, Perez Martinez S, Franchi AM, Ribeiro ML. Lysophosphatidic acid increases the production of pivotal mediators of decidualization and vascularization in the rat uterus. Placenta 2013; 34:751-6. [PMID: 23790320 DOI: 10.1016/j.placenta.2013.06.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 05/10/2013] [Accepted: 06/04/2013] [Indexed: 11/28/2022]
Abstract
INTRODUCTION The decidual reaction and the formation of new vessels in the uterus are two crucial processes during embryo implantation. Previously, we observed that lysophosphatidic acid (LPA) increases cyclooxygenase-2 derived - prostaglandin E2 production during implantation in the rat uterus and that it augments the expression of decidualization (IGFBP-1) and vascularization (IL-10) markers. Both cyclooxygenase and nitric oxide synthase (NOS) are known enzymes involved in these processes. Thus, we became interested in studying which factors contribute to LPA receptor-specific role during the decidual and the vascular reaction at implantation. METHODS We adopted a pharmacological approach in vitro incubating the uterus from rats on day 5 of gestation (day of implantation) with LPA, DGPP (a highly selective antagonist of LPA3, an LPA receptor) and cyclooxygenase and NOS selective and non-selective inhibitors. We determined NOS activity, prostaglandin E2 production and IGFBP-1 and IL-10 expression to evaluate decidualization and vascularization. RESULTS We observed that LPA augmented the activity of the inducible NOS isoform through LPA1/LPA3. Inducible NOS activity participated in the induction of cyclooxygenase-2/prostaglandin E2 increase stimulated by LPA. Also, cyclooxygenase-2 derived prostaglandins mediated LPA-stimulatory action on NOS activity. Both cyclooxygenase-2 and inducible NOS mediated LPA effect on IGFBP-1 and IL-10 expression. CONCLUSIONS These results suggest the participation of LPA/LPA3 in the production of crucial molecules involved in vascularization and decidualization, two main processes that prepare the uterine milieu for embryo invasion during implantation.
Collapse
Affiliation(s)
- J S Beltrame
- Laboratorio de Fisiología y Farmacología de la Reproducción, CEFYBO CONICET - UBA, Buenos Aires, Argentina
| | | | | | | | | | | |
Collapse
|
24
|
Kaczmarek MM, Krawczynski K, Filant J. Seminal Plasma Affects Prostaglandin Synthesis and Angiogenesis in the Porcine Uterus1. Biol Reprod 2013; 88:72. [DOI: 10.1095/biolreprod.112.103564] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
|
25
|
Mechanisms of implantation: strategies for successful pregnancy. Nat Med 2013; 18:1754-67. [PMID: 23223073 DOI: 10.1038/nm.3012] [Citation(s) in RCA: 859] [Impact Index Per Article: 78.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 10/16/2012] [Indexed: 12/14/2022]
Abstract
Physiological and molecular processes initiated during implantation for pregnancy success are complex but highly organized. This review primarily highlights adverse ripple effects arising from defects during the peri-implantation period that perpetuate throughout pregnancy. These defects are reflected in aberrations in embryo spacing, decidualization, placentation and intrauterine embryonic growth, manifesting in preeclampsia, miscarriages and/or preterm birth. Understanding molecular signaling networks that coordinate strategies for successful implantation and decidualization may lead to approaches to improve the outcome of natural pregnancy and pregnancy conceived from in vitro fertilization.
Collapse
|
26
|
Wang Q, Lu J, Zhang S, Wang S, Wang W, Wang B, Wang F, Chen Q, Duan E, Leitges M, Kispert A, Wang H. Wnt6 is essential for stromal cell proliferation during decidualization in mice. Biol Reprod 2013; 88:5. [PMID: 23175771 DOI: 10.1095/biolreprod.112.104687] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Postimplantation uterine development involves extensive stromal cell proliferation and decidual transformation with polyploidization, which is essential for normal pregnancy establishment. However, it remains largely unknown how stromal proliferation versus decidual polyploidization is differentially regulated during decidualization. Utilizing Wnt6-mutant mice, we show here that Wnt6 deficiency impairs stromal cell proliferation without much adverse effects on decidual polyploidization. Applying a primary stromal cell culture model, we further reveal that loss of Wnt6 prolongs the cell cycle length via downregulating cyclin B1 expression, thus attenuating stromal cell proliferation. Our study provides the first genetic evidence that Wnt6 is critical for normal stromal cell proliferation in mice, highlighting the concept that there are differential machineries governing the process of stromal cell proliferation versus decidual transformation during early pregnancy. This finding has high clinical relevance because Wnt signaling is known to be important for human implantation and endometrial function.
Collapse
Affiliation(s)
- Qiang Wang
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, People's Republic of China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Zhang S, Lin H, Kong S, Wang S, Wang H, Wang H, Armant DR. Physiological and molecular determinants of embryo implantation. Mol Aspects Med 2013; 34:939-80. [PMID: 23290997 DOI: 10.1016/j.mam.2012.12.011] [Citation(s) in RCA: 346] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 12/25/2012] [Accepted: 12/26/2012] [Indexed: 01/19/2023]
Abstract
Embryo implantation involves the intimate interaction between an implantation-competent blastocyst and a receptive uterus, which occurs in a limited time period known as the window of implantation. Emerging evidence shows that defects originating during embryo implantation induce ripple effects with adverse consequences on later gestation events, highlighting the significance of this event for pregnancy success. Although a multitude of cellular events and molecular pathways involved in embryo-uterine crosstalk during implantation have been identified through gene expression studies and genetically engineered mouse models, a comprehensive understanding of the nature of embryo implantation is still missing. This review focuses on recent progress with particular attention to physiological and molecular determinants of blastocyst activation, uterine receptivity, blastocyst attachment and uterine decidualization. A better understanding of underlying mechanisms governing embryo implantation should generate new strategies to rectify implantation failure and improve pregnancy rates in women.
Collapse
Affiliation(s)
- Shuang Zhang
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, PR China
| | | | | | | | | | | | | |
Collapse
|
28
|
Zhang S, Kong S, Lu J, Wang Q, Chen Y, Wang W, Wang B, Wang H. Deciphering the molecular basis of uterine receptivity. Mol Reprod Dev 2012; 80:8-21. [PMID: 23070972 DOI: 10.1002/mrd.22118] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Accepted: 09/26/2012] [Indexed: 11/11/2022]
Abstract
Uterine receptivity is defined as a limited time period during which the uterus enters into an appropriately differentiated state that is ready for the initiation of implantation by competent blastocysts. Although various cellular aspects and molecular pathways involved in uterine receptivity have been identified by gene expression studies and genetically engineered mouse models, a comprehensive understanding of the window of uterine receptivity is still missing. This review focuses on the recent progress in this area, with particular focus on the molecular basis of stromal-epithelial dialogue and crosstalk between the blastocyst and the uterus during implantation. A better understanding of the underlying mechanisms governing the window of uterine receptivity is hoped to generate new strategies to correct implantation failure and to improve pregnancy rates in women.
Collapse
Affiliation(s)
- Shuang Zhang
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, PR China
| | | | | | | | | | | | | | | |
Collapse
|
29
|
Large MJ, DeMayo FJ. The regulation of embryo implantation and endometrial decidualization by progesterone receptor signaling. Mol Cell Endocrinol 2012; 358:155-65. [PMID: 21821095 PMCID: PMC3256265 DOI: 10.1016/j.mce.2011.07.027] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 07/09/2011] [Accepted: 07/12/2011] [Indexed: 12/17/2022]
Abstract
During the early stages of pregnancy, fertilized embryos must attach to the uterine epithelium, invade into the underlying uterine stroma, and the stroma must then differentiate in a process termed decidualization in order for a successful pregnancy to be initiated. The steroid hormone progesterone (P4) is an integral mediator of these early pregnancy events, exerting its effects via the progesterone receptor (PR). Insights gained from the use of mouse models and genomic profiling has identified many of the key molecules enlisted by PR to execute the paradigm of early pregnancy. This review describes several of the molecules through which the PR exerts its pleiotropic effects including ligands, receptors, chaperones, signaling proteins and transcription factors. Understanding these molecules and their concatenation is of vital importance to our ability to clinically treat reproductive health problems like infertility and endometriosis.
Collapse
Affiliation(s)
- Michael J. Large
- Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030 (USA)
| | - Francesco J. DeMayo
- Department of Molecular and Cellular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030 (USA)
| |
Collapse
|
30
|
Arachidonic acid regulation of the cytosolic phospholipase A2α/cyclooxygenase-2 pathway in mouse endometrial stromal cells. Fertil Steril 2012; 97:1199-205.e1-9. [DOI: 10.1016/j.fertnstert.2012.02.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2011] [Revised: 02/08/2012] [Accepted: 02/08/2012] [Indexed: 11/22/2022]
|
31
|
González IM, Martin PM, Burdsal C, Sloan JL, Mager S, Harris T, Sutherland AE. Leucine and arginine regulate trophoblast motility through mTOR-dependent and independent pathways in the preimplantation mouse embryo. Dev Biol 2011; 361:286-300. [PMID: 22056783 DOI: 10.1016/j.ydbio.2011.10.021] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Revised: 10/18/2011] [Accepted: 10/19/2011] [Indexed: 01/06/2023]
Abstract
Uterine implantation is a critical element of mammalian reproduction and is a tightly and highly coordinated event. An intricate and reciprocal uterine-embryo dialog exists to synchronize uterine receptivity with the concomitant activation of the blastocyst, maximizing implantation success. While a number of pathways involved in regulating uterine receptivity have been identified in the mouse, less is understood about blastocyst activation, the process by which the trophectoderm (TE) receives extrinsic cues that initiate new characteristics essential for implantation. Amino acids (AA) have been found to regulate blastocyst activation and TE motility in vitro. In particular, we find that arginine and leucine alone are necessary and sufficient to induce TE motility. Both arginine and leucine act individually and additively to propagate signals that are dependent on the activity of the mammalian target of rapamycin complex 1 (mTORC1). The activities of the well-established downstream targets of mTORC1, p70S6K and 4EBP, do not correlate with trophoblast motility, suggesting that an independent-rapamycin-sensitive pathway operates to induce trophoblast motility, or that other, parallel amino acid-dependent pathways are also involved. We find that endogenous uterine factors act to induce mTORC1 activation and trophoblast motility at a specific time during pregnancy, and that this uterine signal is later than the previously defined signal that induces the attachment reaction. In vivo matured blastocysts exhibit competence to respond to an 8-hour AA stimulus by activating mTOR and subsequently undergoing trophoblast outgrowth by the morning of day 4.5 of pregnancy, but not on day 3.5. By the late afternoon of day 4.5, the embryos no longer require any exposure to AA to undergo trophoblast outgrowth in vitro, demonstrating the existence and timing of an equivalent in vivo signal. These results suggest that there are two separate uterine signals regulating implantation, one that primes the embryo for the attachment reaction and another that activates mTOR and initiates invasive behavior.
Collapse
Affiliation(s)
- Isabel M González
- Department of Cell Biology, University of Virginia Health System, Charlottesville, VA 22901, USA.
| | | | | | | | | | | | | |
Collapse
|
32
|
Tian Z, Zhao ZA, Liang XH, Zhang XH, Sha AG, Zhang ZR, Yu YS, Yang ZM. Expression and function of fatty acid-binding protein 4 during mouse decidualization. Fertil Steril 2011; 95:2749-52.e1-5. [PMID: 21704217 DOI: 10.1016/j.fertnstert.2011.05.052] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 05/10/2011] [Accepted: 05/15/2011] [Indexed: 11/27/2022]
Abstract
Fatty acid-binding protein 4 (Fabp4) is highly expressed in the secondary decidual zone of mouse decidua and deciduoma and stromal cells under in vitro decidualization. Dtprp, a well-known marker of in vitro decidualization, is diminished by small interfering RNA against Fabp4 and FABP4 inhibitor and stimulated through Fabp4 overexpression.
Collapse
Affiliation(s)
- Zhen Tian
- Department of Biology, Santou University, Shantou, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
33
|
Ghoshal S, Trivedi DB, Graf GA, Loftin CD. Cyclooxygenase-2 deficiency attenuates adipose tissue differentiation and inflammation in mice. J Biol Chem 2010; 286:889-98. [PMID: 20961858 DOI: 10.1074/jbc.m110.139139] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Obesity is associated with a variety of disorders and is a significant health problem in developed countries. One factor controlling the level of adiposity is the differentiation of cells into adipocytes. Adipocyte differentiation requires expression of peroxisome proliferator-activated receptor γ (PPARγ), which is activated by ligands to regulate expression of genes involved in adipocyte differentiation. Although 15-deoxy-Δ(12,14)-prostaglandin (PG) J(2) (15d-PGJ(2)) has long been known to be a potent activator of PPARγ, the importance of its synthesis in adipose tissue in vivo is not clear. The current study utilized mice deficient in cyclooxygenase-2 (COX-2) to examine the role of COX-2-derived PGs as in vivo modulators of adiposity. As compared with strain- and age-matched wild-type controls, the genetic deficiency of COX-2 resulted in a significant reduction in total body weight and percent body fat. Although there were no significant differences in food consumption between groups, COX-2-deficient mice showed increased metabolic activity. Epididymal adipose tissue from wild-type mice produced a significantly greater level of 15d-PGJ(2), as compared with adipose tissue isolated from mice deficient in COX-2. Furthermore, production of the precursor required for 15d-PGJ(2) formation, PGD(2), was also significantly reduced in COX-2-deficient adipose tissue. The expression of markers for differentiated adipocytes was significantly reduced in adipose tissue from COX-2-deficient mice, whereas preadipocyte marker expression was increased. Macrophage-dependent inflammation was also significantly reduced in adipose tissue of COX-2-deficient mice. These findings suggest that reduced adiposity in COX-2-deficient mice results from attenuated PPARγ ligand production and adipocyte differentiation.
Collapse
Affiliation(s)
- Sarbani Ghoshal
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, USA
| | | | | | | |
Collapse
|
34
|
The cumulus cell gene expression profile of oocytes with different nuclear maturity and potential for blastocyst formation. J Assist Reprod Genet 2010; 28:31-40. [PMID: 20859762 DOI: 10.1007/s10815-010-9481-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Accepted: 09/05/2010] [Indexed: 10/19/2022] Open
Abstract
PURPOSE Gene expression in human ART cumulus cell (CC) has been related to oocyte maturity and competence but requires further validation. Expression dynamics were investigated in CC of oocytes at different maturational stages and with different developmental competence in a standard in vivo mouse superovulation model. METHODS Quantitative PCR analysis of Has2, Vcan, Sdc4, Alcam, Grem1, Ptgs1 and Ptgs2 in CC collected at regular time intervals from 0 to 24 h post hCG injection. RESULTS Three expression patterns were observed each with strong regulation (4-230× differences). Immediately prior to ovulation CC of GVBD oocytes have 5× less Sdc4 and Ptgs1 and 5× more Ptgs2 when compared to the CC of freshly ovulated PB oocytes. When compared to the latter, the post-ovulatory aged PB oocytes had a 2× reduced blastocyst forming capacity and their CC expressed 2× more Sdc4 and 6× less Alcam. CONCLUSIONS Morphologically identical cumulus oocyte complexes with different developmental competence can be differentiated by CC gene expression.
Collapse
|
35
|
St-Louis I, Singh M, Brasseur K, Leblanc V, Parent S, Asselin E. Expression of COX-1 and COX-2 in the endometrium of cyclic, pregnant and in a model of pseudopregnant rats and their regulation by sex steroids. Reprod Biol Endocrinol 2010; 8:103. [PMID: 20735829 PMCID: PMC2936314 DOI: 10.1186/1477-7827-8-103] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Accepted: 08/24/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cyclooxygenases (COXs) are the rate limiting enzymes in the process of prostaglandins (PGs) synthesis, which are critical regulators of a number of reproductive processes, including ovulation, implantation, decidualization and parturition. The aim of the present study was to investigate the expression and regulation of COX-1 and COX-2 and levels of prostaglandins during rat pregnancy, in a model of pseudopregnancy and estrous cycle. METHODS Uteri were collected from the cyclic rats on each day of estrous cycle, after every two days for pregnant (days 2 to 22) and pseudopregnant rats (days 1 to 9). In vitro primary endometrial stromal cells were cultured in the presence of steroid hormones and their respective inhibitors for the possible modulation of COX-1 and COX-2. Endometrial protein extracts were used for western blot analysis and tissue sections were prepared for protein localization using immunofluorescence. Measurements of PGF2alpha and PGE2 metabolites in serum were performed by enzyme immunoassay (EIA). RESULTS COX-1 expression was found to be elevated during implantation and parturition, however, the levels of COX-1 decreased during decidualization periods. COX-2 was detected during early pregnancy from day 2 to 5, increased during decidual regression, and was also expressed at the time of parturition. COX-2 protein expression was found to be increased at estrus phase in cyclic rats. Both enzymes were found to be modulated in the endometrium of pseudopregnant rats, suggesting that they are regulated by 17beta-estradiol and progesterone. A significant increase in PGE2 metabolite levels was observed on day 10, 12 and 14 of pregnancy. However, an increase in PGF2alpha metabolite levels was observed only on day 14. The concentration of both these metabolites changed during pseudopregnancy and maximum levels were observed at day 7. Significant increase in PGE2 metabolite was observed at proestrus phase, on the other hand, PGF2alpha metabolite was significantly increased at proestrus and metestrus phase. COX-2 protein was regulated by 17beta-estradiol in cultured endometrial stromal cells which was blocked in the presence of ICI-182,780. CONCLUSIONS Taken together, these results suggest that COX-1 and COX-2 could be differentially regulated by steroid hormones and might be the key factors involved in embryo implantation, decidualization, decidua basalis regression and parturition in rats.
Collapse
Affiliation(s)
- Isabelle St-Louis
- Research group in molecular oncology and endocrinology, Department of chemistry-biology, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, Québec, G9A 5H7, Canada
| | - Mohan Singh
- Research group in molecular oncology and endocrinology, Department of chemistry-biology, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, Québec, G9A 5H7, Canada
| | - Kevin Brasseur
- Research group in molecular oncology and endocrinology, Department of chemistry-biology, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, Québec, G9A 5H7, Canada
| | - Valérie Leblanc
- Research group in molecular oncology and endocrinology, Department of chemistry-biology, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, Québec, G9A 5H7, Canada
| | - Sophie Parent
- Research group in molecular oncology and endocrinology, Department of chemistry-biology, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, Québec, G9A 5H7, Canada
| | - Eric Asselin
- Research group in molecular oncology and endocrinology, Department of chemistry-biology, Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, Québec, G9A 5H7, Canada
| |
Collapse
|
36
|
Xu M, Choudhary S, Voznesensky O, Gao Q, Adams D, Diaz-Doran V, Wu Q, Goltzman D, Raisz LG, Pilbeam CC. Basal bone phenotype and increased anabolic responses to intermittent parathyroid hormone in healthy male COX-2 knockout mice. Bone 2010; 47:341-52. [PMID: 20471507 PMCID: PMC3056501 DOI: 10.1016/j.bone.2010.05.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2009] [Revised: 04/26/2010] [Accepted: 05/06/2010] [Indexed: 01/09/2023]
Abstract
Cyclooxygenase-2 (COX-2) knockout (KO) mice in inbred strains can have renal dysfunction with secondary hyperparathyroidism (HPTH), making direct effects of COX-2 KO on bone difficult to assess. COX-2 KO mice in an outbred CD-1 background did not have renal dysfunction but still had two-fold elevated PTH compared to wild type (WT) mice. Compared to WT mice, KO mice had increased serum markers of bone turnover, decreased femoral bone mineral density (BMD) and cortical bone thickness, but no differences in trabecular bone volume by microCT or dynamic histomorphometry. Because PTH is a potent inducer of COX-2 and prostaglandin (PG) production, we examined the effects of COX-2 KO on bone responses after 3 weeks of intermittent PTH. Intermittent PTH increased femoral BMD and cortical bone area more in KO mice than in WT mice and increased trabecular bone volume in the distal femur in both WT and KO mice. Although not statistically significant, PTH-stimulated increases in trabecular bone tended to be greater in KO mice than in WT mice. PTH increased serum markers of bone formation and resorption more in KO than in WT mice but increased the ratio of osteoblastic surface-to-osteoclastic surface only in KO mice. PTH also increased femoral mineral apposition rates and bone formation rates in KO mice more than in WT mice. Acute mRNA responses to PTH of genes that might mediate some anabolic and catabolic effects of PTH tended to be greater in KO than WT mice. We conclude that (1) the basal bone phenotype in male COX-2 KO mice might reflect HPTH, COX-2 deficiency or both, and (2) increased responses to intermittent PTH in COX-2 KO mice, despite the presence of chronic HPTH, suggest that absence of COX-2 increased sensitivity to PTH. It is possible that manipulation of endogenous PGs could have important clinical implications for anabolic therapy with PTH.
Collapse
Affiliation(s)
- Manshan Xu
- Department of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Provenzano C, Pascucci B, Lupari E, Civitareale D. Large scale analysis of transcription factor TTF-1/NKX2.1 target genes in GnRH secreting cell line GT1-7. Mol Cell Endocrinol 2010; 323:215-23. [PMID: 20211691 DOI: 10.1016/j.mce.2010.02.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Revised: 02/26/2010] [Accepted: 02/28/2010] [Indexed: 11/24/2022]
Abstract
TTF-1/Nkx2.1 is a homeodomain-containing transcription factor required for the proper development of ventral forebrain, including some structures of the hypothalamus. TTF-1/Nkx2.1 remains expressed in the hypothalamus after birth and it plays a crucial role during sexual development. To identify putative TTF-1/Nkx2.1 target genes in GnRH neurons, we have studied the gene expression profile of the GT1-7 cells exogenously expressing TTF-1/Nkx2.1 coding gene. Our transcriptome analysis confirms that TTF-1/Nkx2.1 is involved in neuron morphogenesis and differentiation. Many of the newly identified TTF-1/Nkx2.1 target genes have a direct involvement with the central regulation of sexual maturity. In particular, we have identified Sparc as a gene directly regulated by TTF-1/Nkx2.1 at the promoter level. To further support the role of TTF-1 in GnRH neurons, we show that Sparc is involved in the regulation of the GnRH secretion in GT1-7 cells.
Collapse
Affiliation(s)
- Claudia Provenzano
- Institute of Neurobiology and Molecular Medicine, CNR, Via Fosso del Cavaliere 100, 00133 Rome, Italy
| | | | | | | |
Collapse
|
38
|
Reproductive abnormalities in mice expressing omega-3 fatty acid desaturase in their mammary glands. Transgenic Res 2010; 20:283-92. [PMID: 20532624 PMCID: PMC3051059 DOI: 10.1007/s11248-010-9407-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Accepted: 05/21/2010] [Indexed: 12/19/2022]
Abstract
The Caenorhabditis elegans n-3 fatty acid desaturase (Fat-1) acts on a range of 18- and 20-carbon n-6 fatty acid substrates. Transgenic female mice expressing the Fat-1 gene under transcriptional control of the goat β-casein promoter produce milk phospholipids having elevated levels of n-3 polyunsaturated fatty acids (PUFA). However, females from this line were also observed to have impaired reproductive performance characterized by a smaller litter size (2.7 ± 0.6 vs. 7.2 ± 0.7; P < 0.05) than wildtype controls. While there is a close association between PUFA metabolism, prostaglandin biosynthesis, and fertility; reproductive problems in these mice were unanticipated given that the Fat-1 transgene is primarily expressed in the lactating mammary gland. Using multiple approaches it was found that Fat-1 mice have normal ovulation and fertilization rates; however fewer embryos were present in the uterus prior to implantation. Small litter size was also found to be partly attributable to a high incidence of post-implantation fetal resorptions. Embryo transfer experiments revealed that embryos developing from oocytes derived from transgenic ovaries had an increased rate of post-implantation resorption, regardless of the uterine genotype. Ovary transplantation between Fat-1 and C57BL/6 wildtype females revealed that non-ovarian factors also contributed to the smaller litter size phenotype. Finally, surgical removal of the mammary glands from juvenile Fat-1 mice increased the subsequent number of implantation sites per female, but did not lessen the high rate of post-implantation resorptions. In conclusion, we herein report on a system where an exogenous transgene expressed predominately in the mammary gland detrimentally affects female reproduction, suggesting that in certain circumstances the mammary gland may function as an endocrine regulator of reproductive performance.
Collapse
|
39
|
Huizing M, Dorward H, Ly L, Klootwijk E, Kleta R, Skovby F, Pei W, Feldman B, Gahl WA, Anikster Y. OPA3, mutated in 3-methylglutaconic aciduria type III, encodes two transcripts targeted primarily to mitochondria. Mol Genet Metab 2010; 100:149-54. [PMID: 20350831 PMCID: PMC2872056 DOI: 10.1016/j.ymgme.2010.03.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Revised: 03/11/2010] [Accepted: 03/11/2010] [Indexed: 11/15/2022]
Abstract
3-Methylglutaconic aciduria type III (3-MGCA type III), caused by recessive mutations in the 2-exon gene OPA3, is characterized by early-onset bilateral optic atrophy, later-onset extrapyramidal dysfunction, and increased urinary excretion of 3-methylglutaconic acid and 3-methylglutaric acid. Here we report the identification of a novel third OPA3 coding exon, the apparent product of a segmental duplication event, resulting in two gene transcripts, OPA3A and OPA3B. OPA3A deficiency (as in optic atrophy type 3) causes up-regulation of OPA3B. OPA3 protein function remains unknown, but it contains a putative mitochondrial leader sequence, mitochondrial sorting signal and a peroxisomal sorting signal. Our green fluorescent protein tagged OPA3 expression studies found its localization to be predominantly mitochondrial. These findings thus place the cellular metabolic defect of 3-MGCA type III in the mitochondrion rather than the peroxisome and implicate loss of OPA3A rather than gain of OPA3B in disease etiology.
Collapse
Affiliation(s)
- Marjan Huizing
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Blackwell KA, Raisz LG, Pilbeam CC. Prostaglandins in bone: bad cop, good cop? Trends Endocrinol Metab 2010; 21:294-301. [PMID: 20079660 PMCID: PMC2862787 DOI: 10.1016/j.tem.2009.12.004] [Citation(s) in RCA: 200] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2009] [Revised: 12/10/2009] [Accepted: 12/11/2009] [Indexed: 02/01/2023]
Abstract
Prostaglandins (PGs) are multifunctional regulators of bone metabolism that stimulate both bone resorption and formation. PGs have been implicated in bone resorption associated with inflammation and metastatic bone disease, and also in bone formation associated with fracture healing and heterotopic ossification. Recent studies have identified roles for inducible cyclooxygenase (COX)-2 and PGE(2) receptors in these processes. Although the effects of PGs have been most often associated with cAMP production and protein kinase A activation, PGs can engage an extensive G-protein signaling network. Further analysis of COX-2 and PG receptors and their downstream G-protein signaling in bone could provide important clues to the regulation of skeletal cell growth in both health and disease.
Collapse
Affiliation(s)
- Katherine A Blackwell
- New England Musculoskeletal Institute, University of Connecticut Health Center, 263 Farmington Ave, Farmington, CT, USA
| | | | | |
Collapse
|
41
|
Flórez A, de Haro J, Martínez E, Varela C, Bleda S, Acín F. Selective cyclooxygenase-2 inhibition reduces endothelial dysfunction and improves inflammatory status in patients with intermittent claudication. Rev Esp Cardiol 2009; 62:851-7. [PMID: 19706240 DOI: 10.1016/s1885-5857(09)72649-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
INTRODUCTION AND OBJECTIVES Both endothelial dysfunction and a proinflammatory state are present during the early stages of atherosclerosis. In this context, increased expression of cyclooxygenase-2 (COX-2) results in higher levels of vasoconstrictive and proinflammatory substances. The aim of this study was to investigate the influence of COX-2 activity on endothelial dysfunction associated with peripheral arterial disease (PAD). METHODS Brachial artery flow-mediated dilatation (BAFMD), endothelin and high-sensitivity C-reactive protein (hsCRP) levels, and the lipid profile were assessed in 40 patients with intermittent claudication. Of these, 20 were randomly assigned to a group in which they received the selective COX-2 inhibitor celecoxib for 1 week (Group 1), while the other 20 served as controls (Group 2). RESULTS In Group 1, BAFMD increased significantly both 3 hours after the first dose of celecoxib (3.33+/-4.11 vs. 6.97+/-3.27%; P=.008) and 1 week after (3.33+/-4.11 vs. 7.09+/-4.40%; P=.001). The endothelin level decreased significantly in Group 1 (2.92+/-1.87 vs. 1.93+/-1.07 pg/ ml; P=.018), as did the levels of hsCRP (4.78+/-2.73 vs. 2.95+/-2.11 mg/l; P=.023) and low-density lipoprotein cholesterol (106.38+/-18.89 vs. 90.8+/-28.58 mg/dl; P=.019). In Group 2, none of these parameters changed significantly. CONCLUSIONS COX-2 products contribute to endothelial dysfunction and an inflammatory state in PAD. This study's findings provide evidence that these phenomena are implicated in the initiation of atherosclerosis and could prove a new means of investigating alternative approaches to the treatment of early-stage disease.
Collapse
Affiliation(s)
- Aurora Flórez
- Servicio de Angiología y Cirugía Vascular. Hospital Universitario de Getafe. Getafe. Madrid. España.
| | | | | | | | | | | |
Collapse
|
42
|
Brown N, Morrow JD, Slaughter JC, Paria BC, Reese J. Restoration of on-time embryo implantation corrects the timing of parturition in cytosolic phospholipase A2 group IVA deficient mice. Biol Reprod 2009; 81:1131-8. [PMID: 19684335 DOI: 10.1095/biolreprod.109.079061] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Cytosolic phospholipase A2 (cPLA2, PLA2G4A) catalyzes the release of arachidonic acid for prostaglandin synthesis by cyclooxygenase 1 (PTGS1) and cyclooxygenase 2 (PTGS2). Mice with Pla2g4a deficiency have parturition delay and other reproductive deficits, including deferred onset of implantation, crowding of implantation sites, and small litters. In this study, we examined the contribution of PLA2G4A to parturition in mice. Pla2g4a mRNA and protein expression were discretely localized in the term and preterm uterine luminal epithelium and colocalized with Ptgs1, but not Ptgs2, expression. The levels of PGE2, PGF2alpha, 6-keto-PGF1alpha, and TxB2 were significantly decreased in Pla2g4a-null uterine tissues, similar to Ptgs1-null uteri, consistent with predominance of PLA2G4A-PTGS1-mediated prostaglandin synthesis in preparation for murine parturition. Litter size was strongly associated with the timing of parturition in Pla2g4a-null mice but could not fully account for the parturition delay. Pla2g4a-null females that received PGE2 + carbaprostacyclin at the time of implantation delivered earlier (20.5 +/- 0.2 days vs. 21.6 +/- 0.2 days, P < 0.01), although litter size was not improved (4.6 vs. 4.4 pups per litter, P = 0.6). After correction for small litter size, multivariate analysis indicated that Pla2g4a-null mice given prostaglandin treatment to improve implantation timing had gestational length that was similar to wild-type and Pla2g4a heterozygous mice. These results indicate that, despite specific Pla2g4a expression and function in term gestation uteri, the delayed parturition phenotype in Pla2g4a-null mice is primarily due to deferral of implantation. The role of PLA2G4A in timely parturition appears to be critically related to its actions in early pregnancy.
Collapse
Affiliation(s)
- Naoko Brown
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | | | | | | | | |
Collapse
|
43
|
Flórez A, de Haro J, Martínez E, Varela C, Bleda S, Acín F. La inhibición selectiva de la ciclooxigenasa-2 mejora la disfunción endotelial y disminuye el estado inflamatorio en pacientes claudicantes. Rev Esp Cardiol 2009. [DOI: 10.1016/s0300-8932(09)72067-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
44
|
Dackor J, Li M, Threadgill DW. Placental overgrowth and fertility defects in mice with a hypermorphic allele of epidermal growth factor receptor. Mamm Genome 2009; 20:339-49. [PMID: 19466482 DOI: 10.1007/s00335-009-9189-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2009] [Accepted: 04/16/2009] [Indexed: 11/25/2022]
Abstract
Epidermal growth factor receptor (EGFR) is a member of the ERBB family of receptor tyrosine kinases that has been shown to play an important developmental and physiologic role in many aspects of pregnancy. We have previously shown in mice that Egfr(tm1Mag) nullizygous placentas have fewer proliferative trophoblasts than wild-type and exhibit strain-specific defects in the spongiotrophoblast and labyrinth layers. In this study we used mice with the hypermorphic Egfr(Dsk5) allele to study the effects of increased levels of EGFR signaling on placental development. On three genetic backgrounds, heterozygosity for Egfr(Dsk5) resulted in larger placental size with a more prominent spongiotrophoblast layer and increased expression of glycogen cell-specific genes. The C3HeB/FeJ strain showed additional placental enlargement of Egfr(Dsk5) homozygotes with a significant number of homozygous embryos dying prior to 15.5 days post-coitus (dpc). We also observed strain-specific subfertility in Egfr(Dsk5) heterozygous females and pregnancy loss was dependent on maternal factors rather than embryo genotype. Higher levels of phospho-EGFR were detected in the uterus of Egfr(Dsk5) heterozygotes but the structure of Egfr(Dsk5) heterozygous nonpregnant uteri appeared similar to wild-type. Collectively, our results demonstrate that mice with increased levels of EGFR signaling exhibit an extensive level of genetic background-dependent phenotypic variability. In addition, EGFR promotes growth of the placental spongiotrophoblast layer in mice, and EGFR expressed in the uterine stroma may play an underappreciated role in preparation of the uterus for embryo implantation.
Collapse
Affiliation(s)
- Jennifer Dackor
- Department of Genetics, University of North Carolina, Chapel Hill, NC 27599, USA
| | | | | |
Collapse
|
45
|
Burnum KE, Cornett DS, Puolitaival SM, Milne SB, Myers DS, Tranguch S, Brown HA, Dey SK, Caprioli RM. Spatial and temporal alterations of phospholipids determined by mass spectrometry during mouse embryo implantation. J Lipid Res 2009; 50:2290-8. [PMID: 19429885 DOI: 10.1194/jlr.m900100-jlr200] [Citation(s) in RCA: 128] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Molecular events involved in successful embryo implantation are not well understood. In this study, we used MALDI imaging mass spectrometry (IMS) technologies to characterize the spatial and temporal distribution of phospholipid species associated with mouse embryo implantation. Molecular images showing phospholipid distribution within implantation sites changed markedly between distinct cellular areas during days 4-8 of pregnancy. For example, by day 8, linoleate- and docosahexaenoate-containing phospholipids localized to regions destined to undergo cell death, whereas oleate-containing phospholipids localized to angiogenic regions. Arachidonate-containing phospholipids showed different segregation patterns depending on the lipid class, revealing a strong correlation of phosphatidylethanolamines and phosphatidylinositols with cytosolic phospholipase A(2alpha) and cyclooxygenase-2 during embryo implantation. LC-ESI-MS/MS was used to validate MALDI IMS phospholipid distribution patterns. Overall, molecular images revealed the dynamic complexity of lipid distributions in early pregnancy, signifying the importance of complex interplay of lipid molecules in uterine biology and implantation.
Collapse
Affiliation(s)
- Kristin E Burnum
- Departments of Biochemistry, Mass Spectrometry Research Center, Nashville, TN 37232, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Abstract
Transforming growth factor beta (TGF-beta) superfamily members are critical in maintaining cell growth and differentiation in the ovary. Although signaling of activins, TGF-betas, growth differentiation factor 9, and nodal converge preferentially to SMAD2 and SMAD3, the in vivo functions and redundancy of these SMADs in the ovary and female reproduction remain largely unidentified. To circumvent the deleterious phenotypic aspects of ubiquitous deletion of Smad2 and Smad3, a conditional knockout strategy was formulated to selectively inactivate Smad2, Smad3, or both Smad2 and Smad3 in ovarian granulosa cells. While granulosa cell ablation of individual Smad2 or Smad3 caused insignificant changes in female fertility, deletion of both Smad2 and Smad3 led to dramatically reduced female fertility and fecundity. These defects were associated with the disruption of multiple ovarian processes, including follicular development, ovulation, and cumulus cell expansion. Furthermore, the impaired expansion of cumulus cells may be partially associated with altered cumulus expansion-related transcripts that are regulated by SMAD2/3 signaling. Our results indicate that SMAD2 and SMAD3 function redundantly in vivo to maintain normal female fertility and further support the involvement of an intraovarian SMAD2/3 pathway in mediating oocyte-produced signals essential for coordinating key events of the ovulatory process.
Collapse
|
47
|
Sena J, Liu Z. Expression of cyclooxygenase genes and production of prostaglandins during ovulation in the ovarian follicles of Xenopus laevis. Gen Comp Endocrinol 2008; 157:165-73. [PMID: 18555068 DOI: 10.1016/j.ygcen.2008.04.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2008] [Revised: 04/19/2008] [Accepted: 04/22/2008] [Indexed: 11/19/2022]
Abstract
Involvement of cyclooxygenase (COX) and prostaglandin (PG) synthesis during ovulation in Xenopus laevis ovarian follicles was investigated. X. laevis COX cDNAs were isolated from ovarian tissues by using reverse transcription-polymerase chain reaction (RT-PCR) followed by rapid amplification of cDNA ends (RACE). In X. laevis ovary, expression of COX-2 but not COX-1 mRNA was up-regulated during gonadotropin-induced oocyte maturation and ovulation in vitro. Elevation of PGF2* synthesis was directly correlated with the up-regulation of COX-2 mRNA. Synthesis of PGE(2) also increased during periovulatory period, however, the concentrations were much lower than those of PGF2*Progesterone (P4) also induced up-regulation of COX-2 mRNA as well as ovulation. Actinomycin D (ActD) blocked P4-induced ovulation. The inhibition of ovulation by Act D was rescued by co-treatment with exogenous PGF2* in a dose dependent manner. A non-selective COX inhibitor (indomethacin) and selective COX-2 inhibitor (NS398) strongly inhibited the hCG- and P4-dependent production of PGF2*. Inhibitory effects of selective COX-1 inhibitor (SC560) on PGF2* production were lower than that of other inhibitors. Indomethacin and NS398 blocked P4-induced ovulation. NS398 did not block hCG-induced ovulation although it strongly suppressed PGF2* production. These results suggest that (1) in Xenopus ovarian follicles, PGF2* is synthesized during periovulatory period, similar to that in mammals, (2) PGF2* synthesis is regulated by de novo transcription of COX-2 but not COX-1, (3) PGF2* is necessary for P4-induced ovulation but may not be essential for hCG-induced ovulation, and other factor(s) may be involved in the hCG-induced ovulation.
Collapse
Affiliation(s)
- Johnny Sena
- Department of Biology, Eastern New Mexico University, 1500 S. Ave K, Portales, NM 88130, USA
| | | |
Collapse
|
48
|
Kimber SJ. Blastocyst implantation:the adhesion cascade. REPRODUCTIVE MEDICINE AND ASSISTED REPRODUCTIVE TECHNIQUES 2008. [DOI: 10.3109/9780203091500.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
49
|
Kennedy TG, Gillio-Meina C, Phang SH. Prostaglandins and the initiation of blastocyst implantation and decidualization. Reproduction 2007; 134:635-43. [PMID: 17965253 DOI: 10.1530/rep-07-0328] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The process of blastocyst implantation in mammals is remarkably variable, especially in the extent of trophoblast invasion of the endometrium. In most species studied, the earliest macroscopically identifiable sign of blastocyst implantation is an increase in endometrial vascular permeability in areas adjacent to the blastocysts. This is followed in species with invasive implantation by decidualization, again localized to areas adjacent to the blastocysts. In some species, the application of a stimulus to the endometrium can result in increased endometrial vascular permeability and decidualization. Based initially on studies utilizing inhibitors of prostaglandin (PG) synthesis and more recently on studies using the techniques of transgenics, considerable evidence has accumulated indicating that PGs have an important role in the early events of implantation and artificially induced decidualization. However, which PGs are involved remains controversial. There may be differences between species, and different PGs may be involved at different times.
Collapse
Affiliation(s)
- Thomas G Kennedy
- Physiology and Pharmacology and Obstetrics and Gynaecology, The University of Western Ontario, London, Ontario, N6A 5C1 Canada.
| | | | | |
Collapse
|
50
|
Reese J, Wang H, Ding T, Paria BC. The hamster as a model for embryo implantation: insights into a multifaceted process. Semin Cell Dev Biol 2007; 19:194-203. [PMID: 18178492 DOI: 10.1016/j.semcdb.2007.11.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2007] [Revised: 11/21/2007] [Accepted: 11/25/2007] [Indexed: 11/19/2022]
Abstract
Defects in preimplantation embryonic development, uterine receptivity, and implantation are the leading cause of infertility, pregnancy problems and birth defects. Significant progress has been made in our basic understanding of these processes using the mouse model, where implantation is ovarian estrogen-dependent in the presence of progesterone. However, an animal model where implantation is progesterone-dependent must also be studied to gain a full understanding of the embryo and uterine events that are required for implantation. In this regard, the hamster is a useful model and this review summarizes the information currently available regarding mechanisms involved in synchronous preimplantation embryo and uterine development for implantation in this species.
Collapse
Affiliation(s)
- Jeff Reese
- Division of Neonatology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232-0656, USA
| | | | | | | |
Collapse
|