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Choi JW, Kim SW, Kim HS, Kang MJ, Kim SA, Han JY, Kim H, Ku SY. Effects of Melatonin, GM-CSF, IGF-1, and LIF in Culture Media on Embryonic Development: Potential Benefits of Individualization. Int J Mol Sci 2024; 25:751. [PMID: 38255823 PMCID: PMC10815572 DOI: 10.3390/ijms25020751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 01/24/2024] Open
Abstract
The implantation of good-quality embryos to the receptive endometrium is essential for successful live birth through in vitro fertilization (IVF). The higher the quality of embryos, the higher the live birth rate per cycle, and so efforts have been made to obtain as many high-quality embryos as possible after fertilization. In addition to an effective controlled ovarian stimulation process to obtain high-quality embryos, the composition of the embryo culture medium in direct contact with embryos in vitro is also important. During embryonic development, under the control of female sex hormones, the fallopian tubes and endometrium create a microenvironment that supplies the nutrients and substances necessary for embryos at each stage. During this process, the development of the embryo is finely regulated by signaling molecules, such as growth factors and cytokines secreted from the epithelial cells of the fallopian tube and uterine endometrium. The development of embryo culture media has continued since the first successful human birth through IVF in 1978. However, there are still limitations to mimicking a microenvironment similar to the reproductive organs of women suitable for embryo development in vitro. Efforts have been made to overcome the harsh in vitro culture environment and obtain high-quality embryos by adding various supplements, such as antioxidants and growth factors, to the embryo culture medium. Recently, there has been an increase in the number of studies on the effect of supplementation in different clinical situations such as old age, recurrent implantation failure (RIF), and unexplained infertility; in addition, anticipation of the potential benefits from individuation is rising. This article reviews the effects of representative supplements in culture media on embryo development.
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Affiliation(s)
- Jung-Won Choi
- Laboratory of In Vitro Fertilization, Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (J.-W.C.); (H.-S.K.); (M.-J.K.); (S.-A.K.)
| | - Sung-Woo Kim
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (S.-W.K.); (J.-Y.H.); (H.K.)
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Hee-Sun Kim
- Laboratory of In Vitro Fertilization, Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (J.-W.C.); (H.-S.K.); (M.-J.K.); (S.-A.K.)
| | - Moon-Joo Kang
- Laboratory of In Vitro Fertilization, Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (J.-W.C.); (H.-S.K.); (M.-J.K.); (S.-A.K.)
| | - Sung-Ah Kim
- Laboratory of In Vitro Fertilization, Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (J.-W.C.); (H.-S.K.); (M.-J.K.); (S.-A.K.)
| | - Ji-Yeon Han
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (S.-W.K.); (J.-Y.H.); (H.K.)
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Hoon Kim
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (S.-W.K.); (J.-Y.H.); (H.K.)
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Seung-Yup Ku
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul 03080, Republic of Korea; (S.-W.K.); (J.-Y.H.); (H.K.)
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
- Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University, Seoul 03080, Republic of Korea
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Pham HH, Le AH, Nguyen AM, Ha UD, Nguyen TC, Pham TD, Le HL, Le TK, Huynh BG, Ho TM, Vuong LN. Cumulative live birth rate after oocyte in vitro maturation with a pre-maturation step in women with polycystic ovary syndrome or high antral follicle count. J Assist Reprod Genet 2023; 40:827-835. [PMID: 36821006 PMCID: PMC10224896 DOI: 10.1007/s10815-023-02752-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 02/13/2023] [Indexed: 02/24/2023] Open
Abstract
PURPOSE This study evaluated the 24-month cumulative live birth rate (CLBR) for women with polycystic ovary syndrome (PCOS) or high antral follicle count (AFC) who underwent oocyte in vitro maturation (IVM) with pre-maturation step (CAPA-IVM). METHODS This multicenter, retrospective study was performed at IVFMD, My Duc Hospital, and IVFMD Phu Nhuan, My Duc Phu Nhuan Hospital from 1 January 2017 to 31 December 2019. All women with PCOS or high AFC treated with a CAPA-IVM cycle were included. Cumulative live birth was defined as at least one live birth resulting from the initiated CAPA-IVM cycle. Where a woman did not return for embryo transfer, outcomes were followed up until 24 months from the day of oocyte aspiration. Logistic regression was performed to identify factors predicting the CLBR. RESULTS Data from 374 women were analyzed, 368 of whom had embryos for transfer (98.4%), and six had no embryos for transfer (1.6%). The oocyte maturation rate was 63.2%. The median number of frozen embryos was 4 [quartile 1, 2; quartile 3, 6]. Cumulative clinical pregnancy and ongoing pregnancy rates were 60.4% and 43.6%, respectively. At 24 months after starting CAPA-IVM treatment, the CLBR was 38.5%. Multivariate analysis showed that patient age and number of frozen embryos were significant predictors of cumulative live birth after CAPA-IVM. CONCLUSIONS CAPA-IVM could be considered as an alternative to in vitro fertilization for the management of infertility in women with PCOS or a high AFC who require assisted reproductive technology.
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Affiliation(s)
- Huy H Pham
- IVMFD Phu Nhuan, My Duc Phu Nhuan Hospital, 43R/2-4 Ho Van Hue, Phu Nhuan District, Ho Chi Minh City, Vietnam.
- HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam.
| | - Anh H Le
- IVMFD Phu Nhuan, My Duc Phu Nhuan Hospital, 43R/2-4 Ho Van Hue, Phu Nhuan District, Ho Chi Minh City, Vietnam
- HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Anh M Nguyen
- HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
- IVFMD, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Uyen D Ha
- IVMFD Phu Nhuan, My Duc Phu Nhuan Hospital, 43R/2-4 Ho Van Hue, Phu Nhuan District, Ho Chi Minh City, Vietnam
- HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Tri C Nguyen
- HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Toan D Pham
- HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Ho L Le
- IVMFD Phu Nhuan, My Duc Phu Nhuan Hospital, 43R/2-4 Ho Van Hue, Phu Nhuan District, Ho Chi Minh City, Vietnam
- HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Tien K Le
- IVMFD Phu Nhuan, My Duc Phu Nhuan Hospital, 43R/2-4 Ho Van Hue, Phu Nhuan District, Ho Chi Minh City, Vietnam
- HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Bao G Huynh
- HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
- IVFMD, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Tuong M Ho
- HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
- IVFMD, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Lan N Vuong
- HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
- Department of Obstetrics and Gynecology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
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Compromised Cumulus-Oocyte Complex Matrix Organization and Expansion in Women with PCOS. Reprod Sci 2021; 29:836-848. [PMID: 34748173 DOI: 10.1007/s43032-021-00775-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 10/14/2021] [Indexed: 10/19/2022]
Abstract
The cumulus-oocyte complex (COC) matrix plays a critical role in the ovulation and fertilization process and a major predictor of oocyte quality. Proteomics studies of follicular fluid showed differential expression of COC matrix proteins in women with polycystic ovary syndrome (PCOS), indicating altered COC matrix in these women. In the present study, we aimed to understand COC matrix gene induction in humans and its probable dysfunction in women with PCOS. Animal studies have shown that amphiregulin (AREG) and growth differentiation factor-9 (GDF-9) are important in the induction of COC matrix genes which are involved in cumulus expansion. The effects of AREG and GDF-9 on expression of tumor necrosis factor alpha induced protein 6 (TNFAIP6) and hyaluronan synthase 2 (HAS2) on human cumulus granulosa cells (CGCs) and murine COC expansion were evaluated. Further time-dependent effects of growth factor supplementation on these gene expressions in CGCs from PCOS and control women were compared. Follicular fluid from PCOS showed reduced COC matrix expansion capacity, using murine COCs. Expression of COC matrix genes TNFAIP6 and HAS2 were significantly reduced in CGCs of PCOS. Treatment of CGCs with AREG and GDF-9 together induced expression of both these genes in controls and could only restore HAS2 but not TNFAIP6 expression in PCOS. Our results suggest that the reduced potential of follicular fluid to support COC expansion, altered expression of structural constituents, and intrinsic defects in granulosa cells of women with PCOS may contribute to the aberrant COC organization and expansion in PCOS, thus affecting fertilization.
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Impairment of caprine oocyte maturation in vitro and alteration of granulosa cells functions by widely used fungicide mancozeb. Trop Anim Health Prod 2021; 53:406. [PMID: 34287714 DOI: 10.1007/s11250-021-02854-5] [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: 01/05/2021] [Accepted: 07/09/2021] [Indexed: 10/20/2022]
Abstract
Mancozeb is classified as an endocrine disruptor; thus the present study was carried out to investigate the impact of mancozeb on mammalian ovarian functions using in vitro caprine oocyte maturation and granulosa cell culture models. Caprine cumulus oocyte complexes (COCs) and granulosa cells were cultured under standard culture conditions and treated with mancozeb concentrations of 0.3, 3, and 30 μg/ml along with a control for 24 h and assessed. Granulosa cell viability and progesterone concentration in spent culture media after treatments were also assessed. Mancozeb significantly decreased (P < 0.05) the oocytes cumulus expansion and the maturation of caprine oocytes. Marked changes in granulose cell morphology were observed with 30 μg/ml mancozeb and significantly reduced (P < 0.05) cell viability. Interestingly, the same concentrations significantly increased (P < 0.05) the progesterone secretion by the cells. Significant reduction of granulosa cells viability and reduction of cumulus expansion and suppression of metaphase plate formation in oocyte can impair the fertilization ability and developmental potential of the oocytes. High progesterone concentration due to mancozeb treatment may suppress LH surge and suppress ovulation. In conclusion, mancozeb suppresses granulosa cells viability, reduces cumulus expansion, and suppresses metaphase plate formation but induces progesterone secretion from granulosa cells that may inhibit LH surge for ovulation process.
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Atkinson L, Martin F, Sturmey RG. Intraovarian injection of platelet-rich plasma in assisted reproduction: too much too soon? Hum Reprod 2021; 36:1737-1750. [PMID: 33963408 PMCID: PMC8366566 DOI: 10.1093/humrep/deab106] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 04/09/2021] [Indexed: 12/13/2022] Open
Abstract
The prospect of ovarian rejuvenation offers the tantalising prospect of treating age-related declines in fertility or in pathological conditions such as premature ovarian failure. The concept of ovarian rejuvenation was invigorated by the indication of the existence of oogonial stem cells (OSCs), which have been shown experimentally to have the ability to differentiate into functional follicles and generate oocytes; however, their clinical potential remains unknown. Furthermore, there is now growing interest in performing ovarian rejuvenation in situ. One proposed approach involves injecting the ovary with platelet rich plasma (PRP). PRP is a component of blood that remains after the in vitro removal of red and white blood cells. It contains blood platelets, tiny anucleate cells of the blood, which are responsible for forming athrombus to prevent bleeding. In addition, PRP contains an array of cytokines and growth factors, as well as a number of small molecules.The utility ofPRP has been investigatedin a range of regenerative medicine approaches and has been shown to induce differentiation of a range of cell types, presumably through the action of cytokines. A handful ofcasereports have described the use of PRP injections into the ovaryin the human, and while these clinical data report promising results, knowledge on the mechanisms and safety of PRP injections into the ovary remain limited.In this article, we summarise some of the physiological detail of platelets and PRP, before reviewing the existing emerging literature in this area. We then propose potential mechanisms by which PRP may be eliciting any effects before reflecting on some considerations for future studies in the area. Importantly, on the basis of our existing knowledge, we suggest that immediate use of PRP in clinical applications is perhaps premature and further fundamental and clinical research on the nature of ovarian insufficiency, as well as the mechanism by which PRP may act on the ovary, is needed to fully understand this promising development.
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Affiliation(s)
- Lloyd Atkinson
- Centre for Atherothrombosis and Metabolic Disease, Hull York Medical School, University of Hull, Hull, UK
| | - Francesca Martin
- Centre for Atherothrombosis and Metabolic Disease, Hull York Medical School, University of Hull, Hull, UK
| | - Roger G Sturmey
- Centre for Atherothrombosis and Metabolic Disease, Hull York Medical School, University of Hull, Hull, UK.,Division of Developmental Biology and Medicine, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, St Mary's Hospital, Manchester, UK
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Frungieri MB, Calandra RS, Bartke A, Matzkin ME. Male and female gonadal ageing: its impact on health span and life span. Mech Ageing Dev 2021; 197:111519. [PMID: 34139215 DOI: 10.1016/j.mad.2021.111519] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 06/03/2021] [Accepted: 06/08/2021] [Indexed: 02/07/2023]
Abstract
Ageing is linked to changes in the hypothalamic-pituitary-gonadal axis and a progressive decline in gonadal function. While women become infertile when they enter menopause, fertility decline in ageing men does not necessarily involve a complete cessation of spermatogenesis. Gonadal dysfunction in elderly people is characterized by morphological, endocrine and metabolic alterations affecting the reproductive function and quality of life. With advancing age, sexuality turns into a critical emotional and physical factor actually defining the number of years that ageing people live a healthy life. Gonadal ageing correlates with comorbidities and an increased risk of age-related diseases including diabetes, kidney problems, cardiovascular failures and cancer. This article briefly summarizes the current state of knowledge on ovarian and testicular senescence, explores the experimental models used in the study of gonadal ageing, and describes the local pro-inflammatory, oxidative and apoptotic events and the associated signalling pathways that take place in the gonads while people get older. Overall, literature reports that ageing exacerbates a mutual crosstalk among oxidative stress, apoptosis and the inflammatory response in the gonads leading to detrimental effects on fertility. Data also highlight the clinical implications of novel therapeutic interventions using antioxidant, anti-apoptotic and anti-inflammatory drugs on health span and life span.
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Affiliation(s)
- Mónica B Frungieri
- Instituto de Biología y Medicina Experimental, CONICET, Ciudad de Buenos Aires, C1428ADN, Argentina; Cátedra de Química, Ciclo Básico Común, Ciudad de Buenos Aires, C1405CAE, Argentina.
| | - Ricardo S Calandra
- Instituto de Biología y Medicina Experimental, CONICET, Ciudad de Buenos Aires, C1428ADN, Argentina
| | - Andrzej Bartke
- Division of Geriatrics Research, Department of Internal Medicine, Southern Illinois University, School of Medicine, Springfield, IL 62702, USA
| | - María E Matzkin
- Instituto de Biología y Medicina Experimental, CONICET, Ciudad de Buenos Aires, C1428ADN, Argentina; Cátedra de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Ciudad de Buenos Aires, C1121ABG, Argentina
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Abstract
Advanced maternal age is associated with the natural oocyte depletion, leading to low oocyte yield, high infertility treatment cancellation rates, and eventual decreases in pregnancy rates. Various innovative interventions have been introduced to improve the outcome of infertility treatment for aging patients. Numerous published data demonstrated that early follicle development was regulated by intraovarian growth factors through autocrine or paracrine mechanisms. Platelet-rich plasma (PRP), a plasma fraction of peripheral blood with a high concentration of platelets, has been implemented in regenerative medicine in the last decade. The plasma contains a variety of growth factors that were suggested to be able to enhance angiogenesis regeneration and the cell proliferation process. The initial report showed that an intraovarian injection of PRP improved the hormonal profile and increased the number of retrieved oocytes in patients with diminished ovarian reserve. Subsequently, several studies with larger sample sizes have reported that this approach resulted in several healthy live births with no apparent complications. However, the use of ovarian PRP treatment needs to be fully investigated, because no randomized controlled trial has yet been performed to confirm its efficacy.
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Yu BY, Subudeng G, Du CG, Liu ZH, Zhao YF, Namei E, Bai Y, Yang BX, Li HJ. Plasminogen activator, tissue type regulates germinal vesicle breakdown and cumulus expansion of bovine cumulus-oocyte complex in vitro†. Biol Reprod 2020; 100:1473-1481. [PMID: 30939202 DOI: 10.1093/biolre/ioz049] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 02/02/2019] [Accepted: 03/30/2019] [Indexed: 12/13/2022] Open
Abstract
Plasminogen activator, tissue type (PLAT) and its inhibitor serpin family E member 1 (SERPINE1) cooperatively regulate PLAT activity in various reproductive processes. However, it is unknown whether this includes bovine oocyte maturation. We addressed this question in the present study by evaluating PLAT and SERPINE1 protein localization in immature cumulus-oocyte complexes (COCs), as well as PLAT mRNA and protein expression in cultured COCs after 0, 8, 16, and 24 h of in vitro maturation (IVM). We also examined the effects of PLAT and SERPINE1 on germinal vesicle breakdown (GVBD) and oocyte cyclic 3' 5' adenosine monophosphate (cAMP) levels, cumulus expansion index, and expansion-related gene expression in oocytes derived from bovine COCs cultured for 4, 8, and 12 h and in COCs cultured for 16 h. Both PLAT and SERPINE1 localized in cumulus cells but only the latter was detected in oocytes. PLAT and SERPINE1 transcript levels increased during IVM; however, from 8 to 16 h, the levels of PLAT remained stable whereas those of SERPINE1 increased, resulting in a decline in PLAT concentration. Additionally, PLAT delayed GVBD, increased oocyte cAMP levels, and blocked cumulus expansion and associated gene expression, which was reversed by SERPINE1 supplemented. Thus, PLAT delays bovine oocyte GVBD by enhancing oocyte cAMP levels during the first 8 h of IVM; suppression of PLAT activity via accumulation of SERPINE1 in COCs results in cumulus expansion from 8 to 16 h of IVM. These findings provide novel insights into the molecular mechanisms underlying in vitro bovine oocyte maturation.
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Affiliation(s)
- Bo-Yang Yu
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China.,Basic Medical College, Inner Mongolia Medical University, Hohhot, China
| | - Gerile Subudeng
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Chen-Guang Du
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Zhi-Hong Liu
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Yu-Fen Zhao
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Erge Namei
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Yue Bai
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Bing-Xue Yang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Hai-Jun Li
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
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Peralta O, Bucher D, Angulo C, Castro M, Ratto M, Concha I. Tissue localization of GM-CSF receptor in bovine ovarian follicles and its role on glucose uptake by mural granulosa cells. Anim Reprod Sci 2016; 170:157-69. [DOI: 10.1016/j.anireprosci.2016.04.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 04/25/2016] [Accepted: 04/28/2016] [Indexed: 12/16/2022]
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10
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Wang S, Huang G, Hu Q, Zou Q. A network-based method for the identification of putative genes related to infertility. Biochim Biophys Acta Gen Subj 2016; 1860:2716-24. [PMID: 27102279 DOI: 10.1016/j.bbagen.2016.04.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 04/02/2016] [Accepted: 04/08/2016] [Indexed: 01/18/2023]
Abstract
BACKGROUND Infertility has become one of the major health problems worldwide, with its incidence having risen markedly in recent decades. There is an urgent need to investigate the pathological mechanisms behind infertility and to design effective treatments. However, this is made difficult by the fact that various biological factors have been identified to be related to infertility, including genetic factors. METHODS A network-based method was established to identify new genes potentially related to infertility. A network constructed using human protein-protein interactions based on previously validated infertility-related genes enabled the identification of some novel candidate genes. These genes were then filtered by a permutation test and their functional and structural associations with infertility-related genes. RESULTS Our method identified 23 novel genes, which have strong functional and structural associations with previously validated infertility-related genes. CONCLUSIONS Substantial evidence indicates that the identified genes are strongly related to dysfunction of the four main biological processes of fertility: reproductive development and physiology, gametogenesis, meiosis and recombination, and hormone regulation. GENERAL SIGNIFICANCE The newly discovered genes may provide new directions for investigating infertility. This article is part of a Special Issue entitled "System Genetics" Guest Editor: Dr. Yudong Cai and Dr. Tao Huang.
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Affiliation(s)
- ShaoPeng Wang
- College of Life Science, Shanghai University, Shanghai 200444, China.
| | - GuoHua Huang
- College of Life Science, Shanghai University, Shanghai 200444, China.
| | - Qinghua Hu
- School of Computer Science and Technology, Tianjin University, Tianjin 300072, China; State Key Laboratory of System Bioengineering of the Ministry of Education, Tianjin University, Tianjin 300072, China.
| | - Quan Zou
- School of Computer Science and Technology, Tianjin University, Tianjin 300072, China; State Key Laboratory of Medicinal Chemical Biology, NanKai University, Tianjin 300071, China.
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Dobbs KB, Khan FA, Sakatani M, Moss JI, Ozawa M, Ealy AD, Hansen PJ. Regulation of pluripotency of inner cell mass and growth and differentiation of trophectoderm of the bovine embryo by colony stimulating factor 2. Biol Reprod 2013; 89:141. [PMID: 24198123 DOI: 10.1095/biolreprod.113.113183] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Colony-stimulating factor 2 (CSF2) enhances competence of the bovine embryo to establish and maintain pregnancy after the embryo is transferred into a recipient. Mechanisms involved could include regulation of lineage commitment, growth, or differentiation of the inner cell mass (ICM) and trophectoderm (TE). Experiments were conducted to evaluate regulation by CSF2 of pluripotency of the ICM and differentiation and growth of the TE. Embryos were cultured with 10 ng/ml recombinant bovine CSF2 or a vehicle control from Days 5 to 7 or 6 to 8 postinsemination. CSF2 increased the number of putative zygotes that developed to blastocysts when the percent of embryos becoming blastocysts in the control group was low but decreased blastocyst yield when blastocyst development in controls was high. ICM isolated from blastocysts by lysing the trophectoderm using antibody and complement via immunosurgery were more likely to survive passage when cultured on mitomycin C-treated fetal fibroblasts if derived from blastocysts treated with CSF2 than if from control blastocysts. There was little effect of CSF2 on characteristics of TE outgrowths from blastocysts. The exception was a decrease in outgrowth size for embryos treated with CSF2 from Days 5 to 7 and an increase in expression of CDX2 when treatment was from Days 6 to 8. Expression of the receptor subunit gene CSF2RA increased from the zygote stage to the 9-16 cell stage before decreasing to the blastocyst stage. In contrast, CSF2RB was undetectable at all stages. In conclusion, CSF2 improves competence of the ICM to survive in a pluripotent state and alters TE outgrowths. Actions of CSF2 occur through a signaling pathway that is likely to be independent of CSF2RB.
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Affiliation(s)
- Kyle B Dobbs
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville, Florida
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