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Jitjumnong J, Tang PC. Bone Morphogenetic Protein 15 (BMP-15) Improves In Vitro Mouse Folliculogenesis. Animals (Basel) 2023; 13:ani13060980. [PMID: 36978521 PMCID: PMC10044016 DOI: 10.3390/ani13060980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/16/2023] [Accepted: 03/01/2023] [Indexed: 03/10/2023] Open
Abstract
Multilayered secondary follicles were encapsulated in a 0.5% alginate matrix and cultured in a 3D culture system supplemented with bone morphogenetic protein 15 (BMP-15; 15 ng/mL) for 12 days. The in vitro development of ovarian follicles was evaluated. On day 12, the follicle diameter, follicle survival rate, and antrum formation rate were significantly higher for follicles cultured in BMP-15-supplemented medium than those cultured in regular medium. The percentage of ovulated metaphase II oocytes retrieved from follicles cultured in BMP-15-supplemented medium was greater than that of oocytes retrieved from follicles cultured in regular medium. The secretion of P4 was significantly higher on days 6, 8, and 10 in follicles cultured in BMP-15-supplemented medium. The result for E2 tended toward significance on day 12. Intracellular reactive oxygen species levels were higher and glutathione levels were lower in mature oocytes from the in vitro culture than in mature oocytes from an in vivo control. A 3D culture system using an alginate matrix and supplemented with BMP-15 effectively improves the outcomes of in vitro ovarian follicle culture.
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Affiliation(s)
- Jakree Jitjumnong
- Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan
| | - Pin-Chi Tang
- Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan
- The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan
- Correspondence: ; Tel.: +886-4-2284-0365 (ext. 222); Fax: +886-4-2286-0265
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Ramadan S, Manaa E, El-Attrony M, EL Nagar A. Association of growth hormone (GH), insulin-like growth factor 2 (IGF2) and progesterone receptor (PGR) genes with some productive traits in Gabali rabbits. WORLD RABBIT SCIENCE 2020. [DOI: 10.4995/wrs.2020.12610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
<p>The objectives of the present study were 1) to evaluate the polymorphism of growth hormone(GH), insulin-like growth factor 2 (IGF2) and progesterone receptor (PGR) genes in Sinai Gabali rabbits, and 2) to assess their associations with growth, litter size and milk production traits in Sinai Gabali rabbits. The C>T, A>Del and A>G single nucleotide polymorphisms of GH, IGF2 and PGR genes were genotyped by polymerase chain reaction-restriction fragment length polymorphism using BstUI, HpyF31 and BsaI restriction enzymes, respectively. The C/T genotype of GH gene recorded the heaviest body weights for body weight (BW) at 8 wk (1190.22±19.29 g) and 12 wk of age (1842.46±30.19 g) and recorded the largest litter size at birth (LSB: 7.37±0.12 kits) traits. The Del/Del genotype of IGF2 gene showed the superiority over the other genotypes for BW at 4 wk (507.17±8.87 g), 8 wk (1239.39±14.0 g), and 12 wk of age (1950.15±18.1 g), as well as for daily weight gain from 4 to 8 wk (26.05±0.37 g/d), and from 8 to 12 wk of age (25.48±0.56 g/d) traits. The G/G genotype of the PGR gene showed superiority for LSB (7.51±0.13 kits) and litter size at weaning (6.53±0.14 kits) traits over the other genotypes. Regarding milk yield traits; the C/C, A/A and A/A genotypes of GH, IGF2 and PGR genes yielded more milk compared to the other genotypes. The means of total milk yield in 28 d for these genotypes were 2936±29 g, 2921±43 g and 2930±35 g, respectively. Thus, GH, IGF2 and PGR genes might be useful for marker-assisted selection programmes for improvement of rabbit growth, litter size and milk yield traits.</p>
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Goat Genomic Resources: The Search for Genes Associated with Its Economic Traits. Int J Genomics 2020; 2020:5940205. [PMID: 32904540 PMCID: PMC7456479 DOI: 10.1155/2020/5940205] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/30/2020] [Accepted: 07/24/2020] [Indexed: 11/25/2022] Open
Abstract
Goat plays a crucial role in human livelihoods, being a major source of meat, milk, fiber, and hides, particularly under adverse climatic conditions. The goat genomics related to the candidate gene approach is now being used to recognize molecular mechanisms that have different expressions of growth, reproductive, milk, wool, and disease resistance. The appropriate literature on this topic has been reviewed in this article. Several genetic characterization attempts of different goats have reported the existence of genotypic and morphological variations between different goat populations. As a result, different whole-genome sequences along with annotated gene sequences, gene function, and other genomic information of different goats are available in different databases. The main objective of this review is to search the genes associated with economic traits in goats. More than 271 candidate genes have been discovered in goats. Candidate genes influence the physiological pathway, metabolism, and expression of phenotypes. These genes have different functions on economically important traits. Some genes have pleiotropic effect for expression of phenotypic traits. Hence, recognizing candidate genes and their mutations that cause variations in gene expression and phenotype of an economic trait can help breeders look for genetic markers for specific economic traits. The availability of reference whole-genome assembly of goats, annotated genes, and transcriptomics makes comparative genomics a useful tool for systemic genetic upgradation. Identification and characterization of trait-associated sequence variations and gene will provide powerful means to give positive influences for future goat breeding program.
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Jalili C, Khani Hemmatabadi F, Mansouri K, Bakhtiyari M. Effects of sodium alginate capsules as 3D scaffolds on hormones and genes expression in preantral follicles of mice compared to 2D medium: An experimental study. Int J Reprod Biomed 2020; 18:517-530. [PMID: 32803116 PMCID: PMC7385913 DOI: 10.18502/ijrm.v13i7.7369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 06/18/2019] [Accepted: 01/14/2020] [Indexed: 12/02/2022] Open
Abstract
Background The improvement of in vitro maturation methods, which can activate the preantral follicle growth, plays a crucial role in the production of mature oocytes in reproductive technology. Objective To evaluate the different concentrations of 3D scaffolds of sodium alginate on hormones and gene expression in mice preantral follicles. Materials and Methods Immature female BALB/c mice (12-14 days) were sacrificed. The follicles were removed mechanically and transferred into α minimal essential medium with 5% fetal bovine serum. The preantral follicles were incubated with different concentrations of sodium alginate (0.25%, 0.5%, and 1%) and 2D medium for 12 days. The follicles were examined for antral formation following the 10th day and the diameter on days 6 th and 12 th . The levels of hormones (AMH, androstenedione, 17β-estradiol, and progesterone) and the expression of genes (CYP11a1, CYP17a1, CYP19a1, AMH, and GnRH) at the end of the 12 th day. Results Maximum follicle diameter and highest percentage of antrum formation were related to 0.5% concentration (p = 0.00). The levels of hormones in different doses of sodium alginate were increased significantly compared to the control group (p = 0.00). The highest and lowest levels of these hormones were related to 0.5% concentration and 2D medium, respectively. The highest level of genes expression was observed in 0.5% sodium alginate, which showed a significant increase compared to the control group (p = 0.00). Conclusion Proper concentration of alginate hydrogel increases follicle growth, causes follicle maturation, produces steroid hormones, and increases appropriate expression of steroidogenesis-related genes.
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Affiliation(s)
- Cyrus Jalili
- Department of Anatomical Sciences, Medical Biology Research Center, Kermanshah University of Medical Sciences, Taghbostan, Kermanshah, Iran
| | | | - Kamran Mansouri
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mehrdad Bakhtiyari
- Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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Pozovnikova MV, Rotar LN, Kudinov AA, Dementieva NV. The Linkage of Polymorphic Variants of Genes Gh, Prl, and Pit-1 and Milk Productivity of Cows with Morphology of Cumulus-Oocyte Complex Sampled Post Mortem. CYTOL GENET+ 2020. [DOI: 10.3103/s0095452720030111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kedem A, Aelion-Brauer A, Guo P, Wen D, Ding BS, Lis R, Cheng D, Sandler VM, Rafii S, Rosenwaks Z. Activated ovarian endothelial cells promote early follicular development and survival. J Ovarian Res 2017; 10:64. [PMID: 28927438 PMCID: PMC5605973 DOI: 10.1186/s13048-017-0354-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 08/31/2017] [Indexed: 12/30/2022] Open
Abstract
Background New data suggests that endothelial cells (ECs) elaborate essential “angiocrine factors”. The aim of this study is to investigate the role of activated ovarian endothelial cells in early in-vitro follicular development. Methods Mouse ovarian ECs were isolated using magnetic cell sorting or by FACS and cultured in serum free media. After a constitutive activation of the Akt pathway was initiated, early follicles (50–150 um) were mechanically isolated from 8-day-old mice and co-cultured with these activated ovarian endothelial cells (AOEC) (n = 32), gel (n = 24) or within matrigel (n = 27) in serum free media for 14 days. Follicular growth, survival and function were assessed. Results After 6 passages, flow cytometry showed 93% of cells grown in serum-free culture were VE-cadherin positive, CD-31 positive and CD 45 negative, matching the known EC profile. Beginning on day 4 of culture, we observed significantly higher follicular and oocyte growth rates in follicles co-cultured with AOECs compared with follicles on gel or matrigel. After 14 days of culture, 73% of primary follicles and 83% of secondary follicles co-cultured with AOEC survived, whereas the majority of follicles cultured on gel or matrigel underwent atresia. Conclusions This is the first report of successful isolation and culture of ovarian ECs. We suggest that co-culture with activated ovarian ECs promotes early follicular development and survival. This model is a novel platform for the in vitro maturation of early follicles and for the future exploration of endothelial-follicular communication. Capsule In vitro development of early follicles necessitates a complex interplay of growth factors and signals required for development. Endothelial cells (ECs) may elaborate essential “angiocrine factors” involved in organ regeneration. We demonstrate that co-culture with ovarian ECs enables culture of primary and early secondary mouse ovarian follicles.
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Affiliation(s)
- Alon Kedem
- The Center for Reproductive Medicine and Infertility, Weill Cornell Medical College, New York, NY, 10021, USA. .,Ansary Stem Cell Center for Regenerative Medicine at Weill Medical College of Cornell University, New York, USA.
| | - Anate Aelion-Brauer
- The Center for Reproductive Medicine and Infertility, Weill Cornell Medical College, New York, NY, 10021, USA.
| | - Peipei Guo
- Ansary Stem Cell Center for Regenerative Medicine at Weill Medical College of Cornell University, New York, USA
| | - Duancheng Wen
- Ansary Stem Cell Center for Regenerative Medicine at Weill Medical College of Cornell University, New York, USA
| | - Bi-Sen Ding
- Ansary Stem Cell Center for Regenerative Medicine at Weill Medical College of Cornell University, New York, USA
| | - Raphael Lis
- Ansary Stem Cell Center for Regenerative Medicine at Weill Medical College of Cornell University, New York, USA
| | - Du Cheng
- Ansary Stem Cell Center for Regenerative Medicine at Weill Medical College of Cornell University, New York, USA
| | - Vladislav M Sandler
- Ansary Stem Cell Center for Regenerative Medicine at Weill Medical College of Cornell University, New York, USA
| | - Shahin Rafii
- Ansary Stem Cell Center for Regenerative Medicine at Weill Medical College of Cornell University, New York, USA
| | - Zev Rosenwaks
- The Center for Reproductive Medicine and Infertility, Weill Cornell Medical College, New York, NY, 10021, USA.,Ansary Stem Cell Center for Regenerative Medicine at Weill Medical College of Cornell University, New York, USA
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E. Othman O, S. Alam S, A.M. Abd E H, M. Abd-El- O. Genotyping of Growth Hormone Gene in Egyptian Small Ruminant Breeds. ACTA ACUST UNITED AC 2015. [DOI: 10.3923/biotech.2015.136.141] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Altermatt J, Marolf A, Wrigley R, Carnevale E. Effects of FSH and LH on ovarian and follicular blood flow, follicular growth and oocyte developmental competence in young and old mares. Anim Reprod Sci 2012; 133:191-7. [DOI: 10.1016/j.anireprosci.2012.06.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Revised: 06/26/2012] [Accepted: 06/27/2012] [Indexed: 10/28/2022]
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OLA SI, SUN QY. Factors Influencing the Biochemical Markers for Predicting Mammalian Oocyte Quality. J Reprod Dev 2012; 58:385-92. [DOI: 10.1262/jrd.11-084h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Safiriyu Idowu OLA
- Department of Animal Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Qing-Yuan SUN
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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Lim JM, Gong SP. Genetic and cellular aspects of the establishment of histocompatible stem cells: information gained from an animal model. BMC Proc 2011; 5 Suppl 4:S31. [PMID: 21645312 PMCID: PMC3108227 DOI: 10.1186/1753-6561-5-s4-s31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The establishment of patient-specific histocompatible stem cells may be an alternative for overcoming current limitations in stem cell engineering. We are developing an animal model to assist the establishment of histocompatible, autologous stem cells. In this process, we obtained valuable information on establishing and characterizing stem cells. As an initial step, we succeeded in establishing histocompatible stem cells using preantral follicle cultures and subsequent parthenogenetic activation. The gene expression profile of the established stem cells was similar to that of embryonic stem cells (ESCs) derived from normal fertilization. On the other hand, we propose a way to derive histocompatible, ESC-like cells by co-culturing ovarian stromal cells with feeder fibroblasts, which may allow the derivation of stem cells from somatic tissue. However, more progress regarding the establishment and elucidation on origination of established cell lines is necessary to use this genetic manipulation-free procedure. Nevertheless, relevant information on the process will help to stimulate preclinical research on cell transformation into differentiated, undifferentiated, and even cancerous cells, as well as clinical studies on the application of induced pluripotent cells.
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Affiliation(s)
- Jeong Mook Lim
- WCU Biomodulation Program, Seoul National University, Seoul 151-742, Korea.
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Zhang C, Liu Y, Huang K, Zeng W, Xu D, Wen Q, Yang L. The association of two single nucleotide polymorphisms (SNPs) in growth hormone (GH) gene with litter size and superovulation response in goat-breeds. Genet Mol Biol 2011; 34:49-55. [PMID: 21637543 PMCID: PMC3085373 DOI: 10.1590/s1415-47572010005000110] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Accepted: 10/13/2010] [Indexed: 11/21/2022] Open
Abstract
Two active mutations (A 781 G and A 1575 G) in growth hormone (GH) gene, and their associations with litter size (LS), were investigated in both a high prolificacy (Matou, n = 182) and a low prolificacy breed (Boer, n = 352) by using the PCR-RFLP method. Superovulation experiments were designed in 57 dams, in order to evaluate the effect of different genotypes of the GH gene on superovulation response. Two genotypes (AA and AB, CC and CD) in each mutation were detected in these two goat breeds. Neither BB nor DD homozygous genotypes were observed. The genotypic frequencies of AB and CC were significantly higher than those of AA and CD. In the third parity, Matou dams with AB or CC genotypes had significantly larger litter sizes than those with AA and CD (p < 0.05). On combining the two loci, both Matou and Boer dams with ABCD genotype had the largest litter sizes when compared to the other genotypes (p < 0.05). When undergoing like superovulation treatments, a significantly higher number of corpora lutea and ova, with a lower incidence of ovarian cysts, were harvested in the AB and CC genotypes than in AA and CD. These results show that the two loci of GH gene are highly associated with abundant prolificacy and superovulation response in goat breeds.
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Affiliation(s)
- Chunyan Zhang
- College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
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Nottola SA, Cecconi S, Bianchi S, Motta C, Rossi G, Continenza MA, Macchiarelli G. Ultrastructure of isolated mouse ovarian follicles cultured in vitro. Reprod Biol Endocrinol 2011; 9:3. [PMID: 21232101 PMCID: PMC3033320 DOI: 10.1186/1477-7827-9-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 01/13/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In vitro maturation of ovarian follicles, in combination with cryopreservation, might be a valuable method for preserving and/or restoring fertility in mammals with impaired reproductive function. Several culture systems capable of sustaining mammalian follicle growth in vitro have been developed and many studies exist on factors influencing the development of in vitro grown oocytes. However, a very few reports concern the ultrastructural morphology of in vitro grown follicles. METHODS The present study was designed to evaluate, by transmission and scanning electron microscopy, the ultrastructural features of isolated mouse preantral follicles cultured in vitro for 6 days in a standard medium containing fetal calf serum (FCS). The culture was supplemented or not with FSH. RESULTS The follicles cultured in FCS alone, without FSH supplementation (FCS follicles), did not form the antral cavity. They displayed low differentiation (juxta-nuclear aggregates of organelles in the ooplasm, a variable amount of microvilli on the oolemma, numerous granulosa cell-oolemma contacts, signs of degeneration in granulosa cell compartment). Eighty (80)% of FSH-treated follicles formed the antral cavity (FSH antral follicles). These follicles showed various ultrastructural markers of maturity (spreading of organelles in ooplasm, abundant microvilli on the oolemma, scarce granulosa cell-oolemma contacts, granulosa cell proliferation). Areas of detachment of the innermost granulosa cell layer from the oocyte were also found, along with a diffuse granulosa cell loosening compatible with the antral formation. Theca cells showed an immature morphology for the stage reached. Twenty (20)% of FSH-treated follicles did not develop the antral cavity (FSH non-antral follicles) and displayed morphological differentiation features intermediate between those shown by FCS and FSH antral follicles (spreading of organelles in the ooplasm, variable amount of microvilli, scattered granulosa cell-oolemma contacts, signs of degeneration in granulosa cell compartment). CONCLUSIONS It is concluded that FSH supports the in vitro growth of follicles, but the presence of a diffuse structural granulosa cell-oocyte uncoupling and the absence of theca development unveil the incomplete efficiency of the system. The present study contributes to explain, from a morphological point of view, the effects of culture conditions on the development of mouse in vitro grown follicles and to highlight the necessity of maintaining efficient intercellular communications to obtain large numbers of fully-grown mature germ cells.
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Affiliation(s)
- Stefania A Nottola
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, La Sapienza University of Rome, Rome, Italy
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GONG SP, LEE JH, LIM JM. Derivation of histocompatible stem cells from ovarian tissue. J Reprod Dev 2010; 56:481-94. [PMID: 21079377 DOI: 10.1262/jrd.10-043e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Somatic cell nuclear transfer, the first established technique for producing patient-specific autologous stem cells, inevitably requires the sacrifice of viable embryos. To circumvent the serious ethical issues associated with this use of embryos, researchers have developed several alternative methods for the production of histocompatible stem cells. In our research, we have used two methods to derive histocompatible stem cells from murine ovarian tissue. First, we have established autologous stem cells by culturing degeneration-fated preantral follicles to produce developmentally competent, mature oocytes and then parthenogenetically activating these mature oocytes to acquire genetic homogeneity. Second, we have used cell-to-cell interactions to derive stem cells from ovarian stromal cells without undertaking genetic modification. We have successfully derived autologous murine stem cells by manipulating primary and early secondary follicles in vitro, and this method has proved successful even for follicles retrieved from aged ovaries. Furthermore, we believe that it will be possible to isolate stem cells directly from non-germline ovarian tissue or to derive stem cells by culturing the ovarian cells with other somatic cells. If achieved, these aims will greatly advance the development of induced pluripotent stem cell technology, as well as tissue-specific stem cell research. In this review, we introduce the relevant technologies for establishing histocompatible stem cells from ovarian tissue cells without undertaking genetic manipulation and review the current limitations of, and future research directions in, stem cell biology.
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Affiliation(s)
- Seung Pyo GONG
- WCU Biomodulation Program, Seoul National University, Seoul, South Korea
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McLaughlin M, Bromfield JJ, Albertini DF, Telfer EE. Activin promotes follicular integrity and oogenesis in cultured pre-antral bovine follicles. Mol Hum Reprod 2010; 16:644-53. [PMID: 20203128 DOI: 10.1093/molehr/gaq021] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The aim of this study was to determine the individual and combined effect of activin and follicle stimulating hormone (FSH) on somatic and germ cell development in cultured pre-antral follicles. Pre-antral bovine follicles (mean diameter 157 +/- 3, range 132-199 microm) were cultured for 8 days in serum-free medium in the presence of either 100 ng/ml of recombinant human activin A (rhAct A), 100 ng/ml rhAct A combined with a high (100 ng/ml) or low (50 ng/ml) concentration of recombinant FSH (rFSH) or 50 ng/ml rFSH alone. Intrafollicular connexin 43 expression and actin-based cell adhesion were assessed on Day 2 and 4 of culture. Steroidogenesis was evaluated after Day 4 and 8. Follicles exposed to 100 ng/ml activin maintained expression of connexin 43 at the follicular periphery. In the presence of activin, with or without 100 ng/ml or 50 ng/ml FSH, follicles were steroidogenic undergoing significant growth (P < 0.01), granulosa cell proliferation (P < 0.01) and antral cavity formation (P < 0.05) compared with cultured controls. Maximum oocyte growth occurred in the presence of 100 ng/ml activin alone with a significant percentage of these oocytes maintaining normal morphology over controls (P < 0.05). These results are consistent with a role for activin in maintaining oocyte granulosa cell interactions due to increased peripheral granulosa cell adhesion to the basement membrane and retention of adhesion at the surface of the zona pellucida. Thus, the polarized expression of cell contact interactions promoted by activin supports ongoing folliculogenesis.
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Affiliation(s)
- M McLaughlin
- Centre for Integrative Physiology, Hugh Robson Building, University of Edinburgh, George Square, Edinburgh EH8 9XD, UK
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Jin SY, Lei L, Shikanov A, Shea LD, Woodruff TK. A novel two-step strategy for in vitro culture of early-stage ovarian follicles in the mouse. Fertil Steril 2009; 93:2633-9. [PMID: 20004373 DOI: 10.1016/j.fertnstert.2009.10.027] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2009] [Revised: 10/15/2009] [Accepted: 10/19/2009] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To develop an in vitro strategy to support the growth of early-stage follicles and produce mature oocytes competent for fertilization. DESIGN Whole ovaries from 8-day-old mice were cultured for 4 days, and then secondary follicles were isolated and cultured for 12 days in a three-dimensional alginate or fibrin-alginate (FA) hydrogel matrix. SETTING University-affiliated laboratory. ANIMALS Mice. INTERVENTION(S) None. MAIN OUTCOME MEASURES Histologic evaluation of follicle development, steroid hormone production, and rates of oocyte maturation, oocyte fertilization, and embryo formation. RESULT(S) Culture of 8-day-old mouse ovaries for 4 days resulted in transition of the follicle population from primordial and primary follicles to secondary follicles, similar to that seen in a 12-day-old ovary. Isolated secondary follicles cultured for 12 days showed larger increases in oocyte diameter and more frequent antrum formation and theca cell differentiation in the FA-hydrogel matrix compared with the alginate matrix. Steroid hormone secretion patterns were consistent with the changes in follicle morphology and cell differentiation observed in the cultured follicles. Compared with oocytes from alginate follicle cultures, a greater number of oocytes retrieved from the FA-based follicle cultures progressed to metaphase I, reached metaphase II, and could be fertilized and cleaved to two-cell embryos. The organ culture plus FA-hydrogel follicle culture strategy produced a very high rate of oocyte progression to metaphase II (88 +/- 8.7% [mean +/- SEM]) and formation of two-cell embryos (54 +/- 4%). CONCLUSION(S) A strategy combining whole ovary culture of early-stage follicles and subsequent FA hydrogel in vitro follicle culture produced a high percentage of oocytes competent for fertilization; this might provide new options for fertility preservation in women and prepubertal girls facing fertility-threatening diseases or treatments.
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Affiliation(s)
- Shi Ying Jin
- Center for Reproductive Research, Northwestern University, Evanston, Illinois, USA
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Effect of activin A and insulin-like growth factor-I on in vitro development of preantral follicles isolated from cryopreserved ovarian tissues in the mouse. Cryobiology 2008; 57:209-15. [DOI: 10.1016/j.cryobiol.2008.08.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2008] [Revised: 06/09/2008] [Accepted: 08/19/2008] [Indexed: 11/22/2022]
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