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Izanlou S, Afshar A, Zare A, Zhilisbayeva KR, Bakhshalizadeh S, Safaei Z, Sehat-Bakhsh S, Khaledi S, Asgari HR, Kazemnejad S, Ajami M, Ajami M, Dehghan Tarzjani M, Najafzadeh V, Kouchakian MR, Mussin NM, Kaliyev AA, Aringazina RA, Mahdipour M, Shirazi R, Tamadon A. Enhancing differentiation of menstrual blood-derived stem cells into female germ cells using a bilayer amniotic membrane and nano-fibrous fibroin scaffold. Tissue Cell 2023; 85:102215. [PMID: 37716177 DOI: 10.1016/j.tice.2023.102215] [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: 07/07/2023] [Revised: 08/17/2023] [Accepted: 09/09/2023] [Indexed: 09/18/2023]
Abstract
Three-dimensional nanofiber scaffolds offer a promising method for simulating in vivo conditions within the laboratory. This study aims to investigate the influence of a bilayer amniochorionic membrane/nanofibrous fibroin scaffold on the differentiation of human menstrual blood mesenchymal stromal/stem cells (MenSCs) into female germ cells. MenSCs were isolated and assigned to four culture groups: (i) MenSCs co-cultured with granulosa cells (GCs) using the scaffold (3D-T group), (ii) MenSCs using the scaffold alone (3D-C group), (iii) MenSCs co-cultured only with GCs (2D-T group), and (iv) MenSCs without co-culture or scaffold (2D-C group). Both MenSCs and GCs were independently cultured for two weeks before co-culturing was initiated. Flow cytometry was employed to characterize MenSCs based on positive markers (CD73, CD90, and CD105) and negative markers (CD45 and CD133). Additionally, flow cytometry and immunocytochemistry were used to characterize the GCs. Differentiated MenSCs were analyzed using real-time PCR and immunostaining. The real-time PCR results demonstrated significantly higher levels of VASA expression in the 3D-T group compared to the 3D-C, 2D-T, and 2D-C groups. Similarly, the SCP3 mRNA level in the 3D-T group was notably elevated compared to the 3D-C, 2D-T, and 2D-C groups. Moreover, the expression of GDF9 was significantly higher in the 3D-T group when compared to the 3D-C, 2D-T, and 2D-C groups. Immunostaining results revealed a lack of signal for VASA, SCP3, or GDF9 markers in the 2D-T group, while some cells in the 3D-T group exhibited positive staining for all these proteins. These findings suggest that the combination of a bilayer amniochorionic membrane/nanofibrous fibroin scaffold with co-culturing GCs facilitates the differentiation of MenSCs into female germ cells.
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Affiliation(s)
- Safoura Izanlou
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Alireza Afshar
- Student Research Committee, Bushehr University of Medical Sciences, Bushehr, Islamic Republic of Iran
| | - Afshin Zare
- PerciaVista R&D Co., Shiraz, Islamic Republic of Iran
| | - Kulyash R Zhilisbayeva
- Department of Scientific Work, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
| | - Shabnam Bakhshalizadeh
- Reproductive Development, Murdoch Children's Research Institute, Melbourne, Victoria, Australia; Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia.
| | - Zahra Safaei
- Center for Embryonic Cell and Gene Therapy, Oregon Health and Science University, Portland, OR, 97239, USA
| | - Soheila Sehat-Bakhsh
- Department of Anatomical Sciences, School of Medicine, Qazvin University of Medical Sciences, Qazvin, Islamic Republic of Iran
| | - Sajed Khaledi
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Hamid-Reza Asgari
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Somaieh Kazemnejad
- Reproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Islamic Republic of Iran
| | - Mansoureh Ajami
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Shahroud University of Medical Sciences, Shahroud, Islamic Republic of Iran
| | - Monireh Ajami
- Department of Hematology, Faculty of Paramedical Sciences, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Islamic Republic of Iran
| | - Masoumeh Dehghan Tarzjani
- Department of Gynecology and Obstetrics, Imam Khomeinin Hospital, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | | | - Mohammad Reza Kouchakian
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Nadiar M Mussin
- General Surgery, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
| | - Asset A Kaliyev
- General Surgery, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
| | - Raisa A Aringazina
- Department of Internal Medicine No. 1, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan
| | - Mahdi Mahdipour
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran; Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Shirazi
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran; Department of Anatomy, School of Biomedical Sciences, Medicine & Health, UNSW Sydney, Sydney, Australia.
| | - Amin Tamadon
- PerciaVista R&D Co., Shiraz, Islamic Republic of Iran; Department of Scientific Work, West Kazakhstan Marat Ospanov Medical University, Aktobe, Kazakhstan.
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Vlieghe H, Leonel ECR, Asiabi P, Amorim CA. The characterization and therapeutic applications of ovarian theca cells: An update. Life Sci 2023; 317:121479. [PMID: 36758341 DOI: 10.1016/j.lfs.2023.121479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/24/2023] [Accepted: 02/03/2023] [Indexed: 02/11/2023]
Abstract
Theca cells perform a range of roles during folliculogenesis. So far, little is known about their recruitment process and function since early research has mainly focused on the interactions between granulosa cells and the oocyte, leaving theca cells unfairly forgotten in the understanding of ovarian physiology and pathogenesis. Given that research on theca cells has greatly emerged in recent years, this review of literature aims to discuss the established theoretical concepts with the most recent findings about theca cells' characterization and origins, in vitro culture applications as models for fertility preservation and pharmacological/toxicological studies, its importance in unraveling pathogenic pathways, and stem-cell-based bioengineering for hormonal replacement therapies. Isolation and in vitro culture techniques for theca cells have led to essential advancements in their characterization as a specific cell population. Unraveling the origins of theca cells during the in vivo differentiation process in the adult ovary will assist the development of hormonal replacement therapies, reestablishment of fertility, and treatments for diseases such as premature ovarian insufficiency and polycystic ovarian syndrome, which seem to be directly influenced by theca cells.
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Affiliation(s)
- Hanne Vlieghe
- Pôle de Recherche en Physiopathologie de la Reproduction, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Ellen C R Leonel
- Departament of Histology, Embryology and Cell Biology, Institute of Biological Sciences, Federal University of Goiás, Avenida Esperança, s/n Câmpus Samambaia, 74001-970 Goiânia, GO, Brazil
| | - Parinaz Asiabi
- In Vivo Cellular and Molecular Imaging Laboratory, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - Christiani A Amorim
- Pôle de Recherche en Physiopathologie de la Reproduction, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, 1200 Brussels, Belgium.
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Brązert M, Kranc W, Celichowski P, Ożegowska K, Budna-Tukan J, Jeseta M, Pawelczyk L, Bruska M, Zabel M, Nowicki M, Kempisty B. Novel markers of human ovarian granulosa cell differentiation toward osteoblast lineage: A microarray approach. Mol Med Rep 2019; 20:4403-4414. [PMID: 31702034 PMCID: PMC6797957 DOI: 10.3892/mmr.2019.10709] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 06/26/2019] [Indexed: 01/09/2023] Open
Abstract
Under physiological conditions, human ovarian granulosa cells (GCs), are responsible for a number of processes associated with folliculogenesis and oogenesis. The primary functions of GCs in the individual phases of follicle growth are: Hormone production in response to follicle stimulating hormone (FSH), induction of ovarian follicle atresia through specific molecular markers and production of nexus cellular connections for communication with the oocyte. In recent years, interest in obtaining stem cells from particular tissues, including the ovary, has increased. Special attention has been paid to the novel properties of GCs during long‑term in vitro culture. It has been demonstrated that the usually recycled material in the form of follicular fluid can be a source of cells with stem‑like properties. The study group consisted of patients enrolled in the in vitro fertilization procedure. Total RNA was isolated from GCs at 4 time points (after 1, 7, 15 and 30 days of culture) and was used for microarray expression analysis (Affymetrix® Human HgU 219 Array). The expression of 22,480 transcripts was examined. The selection of significantly altered genes was based on a P‑value <0.05 and expression higher than two‑fold. The leucine rich repeat containing 17, collagen type I α1 chain, bone morphogenetic protein 4, twist family bHLH transcription factor 1, insulin like growth factor binding protein 5, GLI family zinc finger 2 and collagen triple helix repeat containing genes exhibited the highest changes in expression. Reverse‑transcription‑quantitative PCR was performed to validate the results obtained in the analysis of expression microarrays. The direction of expression changes was validated in the majority of cases. The presented results indicated that GCs have the potential of cells that can differentiate towards osteoblasts in long‑term in vitro culture conditions. Increased expression of genes associated with the osteogenesis process suggests a potential for uninduced change of GC properties towards the osteoblast phenotype. The present study, therefore, suggests that GCs may become an excellent starting material in obtaining stable osteoblast cultures. GCs differentiated towards osteoblasts may be used in regenerative and reconstructive medicine in the future.
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Affiliation(s)
- Maciej Brązert
- Department of Gynecology, Obstetrics and Gynecological Oncology, Division of Infertility and Reproductive Endocrinology, Poznan University of Medical Sciences, 60-535 Poznan, Poland
| | - Wiesława Kranc
- Department of Anatomy, Poznan University of Medical Sciences, 60-781 Poznan, Poland
| | - Piotr Celichowski
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznan, Poland
| | - Katarzyna Ożegowska
- Department of Gynecology, Obstetrics and Gynecological Oncology, Division of Infertility and Reproductive Endocrinology, Poznan University of Medical Sciences, 60-535 Poznan, Poland
| | - Joanna Budna-Tukan
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznan, Poland
| | - Michal Jeseta
- Department of Obstetrics and Gynecology, University Hospital and Masaryk University, 62500 Brno, Czech Republic
| | - Leszek Pawelczyk
- Department of Gynecology, Obstetrics and Gynecological Oncology, Division of Infertility and Reproductive Endocrinology, Poznan University of Medical Sciences, 60-535 Poznan, Poland
| | - Małgorzata Bruska
- Department of Gynecology, Obstetrics and Gynecological Oncology, Division of Infertility and Reproductive Endocrinology, Poznan University of Medical Sciences, 60-535 Poznan, Poland
| | - Maciej Zabel
- Department of Human Morphology and Embryology, Division of Histology and Embryology, Wroclaw Medical University, 50-368 Wroclaw, Poland
- Division of Anatomy and Histology, University of Zielona Góra, 65-046 Zielona Góra, Poland
| | - Michał Nowicki
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznan, Poland
| | - Bartosz Kempisty
- Department of Anatomy, Poznan University of Medical Sciences, 60-781 Poznan, Poland
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznan, Poland
- Department of Obstetrics and Gynecology, University Hospital and Masaryk University, 62500 Brno, Czech Republic
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Dabour K, Al Naggar Y, Masry S, Naiem E, Giesy JP. Cellular alterations in midgut cells of honey bee workers (Apis millefera L.) exposed to sublethal concentrations of CdO or PbO nanoparticles or their binary mixture. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 651:1356-1367. [PMID: 30360267 DOI: 10.1016/j.scitotenv.2018.09.311] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 09/19/2018] [Accepted: 09/24/2018] [Indexed: 06/08/2023]
Abstract
Beside many beneficial applications in industry, agriculture and medicine, nanoparticles (NPs) released into the environment might cause adverse effects. In the present study, effects of exposure to sublethal concentrations of PbO and CdO NPs, either separately or in combination on honey bee (A. mellifera) workers were assessed. Honey bee workers were fed sugar syrup contained (20% of LC50) of CdO (0.01 mg ml-1) and PbO (0.65 mg ml-1) NPs either separately or combined for nine days under laboratory conditions. Control bees were fed 1.5 M sucrose syrup without NPs. Effects on histological and cellular structure of mid gut cells were investigated using light and electron microscope. Percentages of incidence of apoptosis or/and necrosis in mid gut cells were also quantified by use of flow cytometry. Rapture of the peritrophic membrane (PM) was among the most observed histopathological alteration in bees fed sugar syrup contained CdO NPs separately or combined with PbO NPs. Common cytological alterations observed in epithelial cells were irregular distribution or/and condensation of nuclear chromatin, mitochondrial swelling and lysis, and rough endoplasmic reticulum (rER) dilation, fragmentation, and vesiculation and were quite similar in all treated groups compared to control. The greatest incidence (%) of necrosis was observed in bees fed the diet that contained CdO NPs alone. The greatest % of both apoptosis and necrosis was observed in bees fed sugar syrup spiked with sublethal concentrations of both metal oxide NPs. Joint action of the binary mixture of Cd and Pb oxide NPs on honey bees was concluded to be antagonistic. Collectively, exposure of honey bees to these metal oxide NPs even at sublethal concentrations will adversely affect viability of the colony and further studies are still required to determine the effects of these metal oxide NPs on behavior and pollination ecology of honeybees.
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Affiliation(s)
- Khaled Dabour
- Zoology Department, Faculty of Science, Tanta University, 31527 Tanta, Egypt
| | - Yahya Al Naggar
- Zoology Department, Faculty of Science, Tanta University, 31527 Tanta, Egypt; Centre of Integrative Bee Research (CIBER), Entomology Department, University of California at Riverside, Riverside, CA 92507, USA.
| | - Saad Masry
- Department of Plant Protection and Molecular Diagnosis, Arid Lands Cultivation, Research Institute, City of Scientific Research and Technological Applications (SRTA-City), 21934 Alexandria, Egypt
| | - Elsaied Naiem
- Zoology Department, Faculty of Science, Tanta University, 31527 Tanta, Egypt
| | - John P Giesy
- Department of Biomedical Veterinary Sciences and Toxicology Centre, University of Saskatchewan, Saskatoon, SKS7N 5B3, Canada
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Differential expression of GDF-9 and BMP- 15 during follicular development in canine ovaries evaluated by flow cytometry. Anim Reprod Sci 2016; 167:59-67. [DOI: 10.1016/j.anireprosci.2016.02.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 01/18/2016] [Accepted: 02/01/2016] [Indexed: 11/22/2022]
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Aghadavod E, Zarghami N, Farzadi L, Zare M, Barzegari A, Movassaghpour AA, Nouri M. Isolation of granulosa cells from follicular fluid; applications in biomedical and molecular biology experiments. Adv Biomed Res 2015; 4:250. [PMID: 26918232 PMCID: PMC4746942 DOI: 10.4103/2277-9175.170675] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 05/12/2013] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Recently, a lot of research has been conducted to investigate the molecular mechanisms of the low quality of oocytes with granulosa cells (GCs). GCs are one of the major cell types found in follicular fluid and purification of these cells from the follicular fluid is very important for further studies. Although, there are different techniques of purification, a method for separation of highly-pure and minimally-damaged cells is necessary. In this paper, we presented a novel method for high purification of GCs with a large quantity and high purity. MATERIALS AND METHODS Follicular fluid was collected from patients who referred for in vitro fertilization and GCs in follicular fluid were extracted by Ficoll, Percoll and Red blood cell lysing buffer (RLB) methods. Then purity of extracted GCs was assessed by flow cytometry and morphological properties of GCs were observed by differential interference contrast microscopy. The purity of deoxyribonucleic acid and ribonucleic acid extracts was examined by NanoDrop 1000, pre-restriction fragment length polymorphism and electrophoresis techniques. Quality and quantity of extracting GCs were affected during the cell separation procedures. RESULTS Our results showed that each of purification method can affect quality and quantity of extracted cells. CONCLUSION RLB method for extraction of GCs was shown to be a convenient procedure in comparison with Ficoll and Percoll methods.
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Affiliation(s)
- Esmat Aghadavod
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
- Women's Reproductive Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nosratollah Zarghami
- Department of Biochemistry and Clinical Laboratories, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Laya Farzadi
- Women's Reproductive Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mina Zare
- Department of Biochemistry and Clinical Laboratories, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abolfazl Barzegari
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Akbar Movassaghpour
- Hemathology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Nouri
- Women's Reproductive Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Biochemistry and Clinical Laboratories, Tabriz University of Medical Sciences, Tabriz, Iran
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In-vitro culture system for mesenchymal progenitor cells derived from waste human ovarian follicular fluid. Reprod Biomed Online 2014; 29:457-69. [PMID: 25131558 DOI: 10.1016/j.rbmo.2014.06.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 06/11/2014] [Accepted: 06/11/2014] [Indexed: 11/21/2022]
Abstract
To characterize different cell populations in the human ovary, morphological and functional characteristics of cell populations collected during routine IVF procedures were studied. Cells obtained from follicular fluid grew in vitro under minimal medium conditions, without growth factor, including leukaemia-inhibiting factor. Morphological analysis revealed a heterogeneous cell population, with cells displaying a fibroblast-like, epithelial-like and also neuron-like features. Morpho-functional characteristics of fibroblast-like cells were similar to mesenchymal stem cells, and, in particular, were positive for mesenchymal stemness markers, including CD90, CD44, CD105, CD73, but negative for epithelial proteins, such as cytokeratins, CD34 and CD45 antigens. Cell proliferation activity at different times and colony-forming unit capability were evaluated, and multipotency of a subset of granulosa cells was established by in-vitro differentiation studies (e.g. osteogenic, chondrogenic and adipogenic differentiation). This study suggests that cells provided by mesenchymal plasticity can be easily isolated by waste follicular fluid, avoiding scraping of human ovaries, and cultivated in minimal conditions. Successful growth of such progenitor cells on three-dimensional cryogel scaffold provides the basis for future developments in tissue engineering. This culture system may be regarded as an experimental model in which biological behaviour is not influenced by specific growth factors.
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CD9 Expression by Human Granulosa Cells and Platelets as a Predictor of Fertilization Success during IVF. Obstet Gynecol Int 2010; 2010. [PMID: 20862371 PMCID: PMC2938453 DOI: 10.1155/2010/192461] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Revised: 07/16/2010] [Accepted: 07/28/2010] [Indexed: 11/17/2022] Open
Abstract
Objective. To determine whether CD9 expression on human granulosa cells (GCs) and platelets could predict the success of conventional fertilization of human oocytes during in vitro fertilization (IVF). Methods. Thirty women undergoing IVF for nonmale factor infertility participated. Platelets from venous blood and GCs separated from retrieved oocytes were prepared for immunofluorescence. Flow cytometry quantified the percent of GCs expressing CD9, and CD9 surface density on GCs and platelets. Fertilization rate was determined for the total number of oocytes, and the number of mature oocytes per patient. Correlations tested for significant relationships (P < .05) between fertilization rates and CD9 expression. Results. CD9 surface density on human GCs is inversely correlated with fertilization rate of oocytes (P = .04), but the relationship was weak. Conclusion. More studies are needed to determine if CD9 expression on GCs would be useful for predicting conventional fertilization success during IVF.
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Grøndahl ML, Borup R, Lee YB, Myrhøj V, Meinertz H, Sørensen S. Differences in gene expression of granulosa cells from women undergoing controlled ovarian hyperstimulation with either recombinant follicle-stimulating hormone or highly purified human menopausal gonadotropin. Fertil Steril 2009; 91:1820-30. [DOI: 10.1016/j.fertnstert.2008.02.137] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2007] [Revised: 02/19/2008] [Accepted: 02/19/2008] [Indexed: 10/22/2022]
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Rizzo R, Fuzzi B, Stignani M, Criscuoli L, Melchiorri L, Dabizzi S, Campioni D, Lanza F, Marzola A, Branconi F, Noci I, Baricordi OR. Soluble HLA-G molecules in follicular fluid: A tool for oocyte selection in IVF? J Reprod Immunol 2007; 74:133-42. [PMID: 17399800 DOI: 10.1016/j.jri.2007.02.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2006] [Revised: 02/23/2007] [Accepted: 02/27/2007] [Indexed: 11/29/2022]
Abstract
Currently, different approaches are used to select oocytes for in vitro fertilization (IVF) procedures, but they do not assure a significant association with the pregnancy outcome. Since several studies have proposed the expression of HLA-G antigens in early embryos to be a possible marker of elevated implantation rate, we have investigated the presence of soluble HLA-G molecules in 50 follicular fluids (FFs). The results have shown soluble HLA-G antigens (sHLA-G) in 19/50 (38%) FFs. Furthermore, we have related the presence of sHLA-G molecules in FFs to detection of the soluble antigens in culture supernatants of the corresponding fertilized oocyte, evidencing a significant relationship (p=1.3 x 10(-6); Fisher exact p-test). Specific ELISA and Western blot approaches identified both HLA-G5 and soluble HLA-G1 molecules in FFs while immunocytochemical analysis indicated polymorphonuclear-like and granulosa cells as responsible for production of sHLA-G1 and HLA-G5 molecules. In contrast, only sHLA-G1 antigens were detected in culture supernatants of fertilized oocytes. Overall, these results suggest a role for sHLA-G molecules in the ovulatory process and propose the FFs analysis for sHLA-G molecule presence as a useful tool for oocyte selection in IVF.
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Affiliation(s)
- R Rizzo
- Department of Experimental and Diagnostic Medicine, Section of Medical Genetics, University of Ferrara, Italy.
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Quinn MCJ, McGregor SB, Stanton JL, Hessian PA, Gillett WR, Green DPL. Purification of granulosa cells from human ovarian follicular fluid using granulosa cell aggregates. Reprod Fertil Dev 2006; 18:501-8. [PMID: 16836956 DOI: 10.1071/rd05051] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2005] [Accepted: 02/22/2006] [Indexed: 11/23/2022] Open
Abstract
Human follicular fluid can provide a source of human granulosa cells for scientific study. However, removing potentially contaminating cells, such as white and red blood cells, is important for molecular and in vitro studies. We have developed a purification technique for human granulosa cells based on the selection of cellular aggregates. Human granulosa cells from 21 IVF patients were collected. A 50% Percoll gradient was used to remove red blood cells, and granulosa cell aggregates were collected, washed and processed for histology, electron microscopy, flow cytometry analysis, cell culture and RNA extraction. Granulosa cell aggregates were found to be homogeneous and free of white blood cells after histological and electron microscopic analysis. White blood cell contamination, measured by flow cytometry, was found to be between 2 and 4%. Polymerase chain reaction analysis revealed expression of known human granulosa cell genes and a white blood cell marker. Human granulosa cells grown in vitro showed flattened fibroblast-like morphology with lipid droplets consistent with previous reports. Cultured cells expressed the FSH receptor. Selection of human granulosa cell aggregates following centrifugation through a Percoll gradient provides an efficient method of selecting granulosa cells, suitable for both molecular and in vitro studies.
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Affiliation(s)
- M C J Quinn
- Department of Anatomy and Structural Biology, School of Medical Sciences, University of Otago, PO Box 913, Dunedin 9001, New Zealand
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12
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Li Y, Ganta S, von Stein FB, Mason DE, Mitchell BM, Freeman LC. 4-aminopyridine decreases progesterone production by porcine granulosa cells. Reprod Biol Endocrinol 2003; 1:31. [PMID: 12740033 PMCID: PMC155641 DOI: 10.1186/1477-7827-1-31] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2003] [Accepted: 04/01/2003] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Ion channels occur as large families of related genes with cell-specific expression patterns. Granulosa cells have been shown to express voltage-gated potassium channels from more than one family. The purpose of this study was to determine the effects of 4-aminopyridine (4-AP), an antagonist of KCNA but not KCNQ channels. METHODS Granulosa cells were isolated from pig follicles and cultured with 4-AP, alone or in combination with FSH, 8-CPT-cAMP, estradiol 17beta, and DIDS. Complimentary experiments determined the effects of 4-AP on the spontaneously established pig granulosa cell line PGC-2. Granulosa cell or PGC-2 function was assessed by radio-immunoassay of media progesterone accumulation. Cell viability was assessed by trypan blue exclusion. Drug-induced changes in cell membrane potential and intracellular potassium concentration were documented by spectrophotometric determination of DiBAC4(3) and PBFI fluorescence, respectively. Expression of proliferating cell nuclear antigen (PCNA) and steroidogenic acute regulatory protein (StAR) was assessed by immunoblotting. Flow cytometry was also used to examine granulosa cell viability and size. RESULTS 4-AP (2 mM) decreased progesterone accumulation in the media of serum-supplemented and serum-free granulosa cultures, but inhibited cell proliferation only under serum-free conditions. 4-AP decreased the expression of StAR, the production of cAMP and the synthesis of estradiol by PGC-2. Addition of either 8-CPT-cAMP or estradiol 17beta to serum-supplemented primary cultures reduced the inhibitory effects of 4-AP. 4-AP treatment was also associated with increased cell size, increased intracellular potassium concentration, and hyperpolarization of resting membrane potential. The drug-induced hyperpolarization of resting membrane potential was prevented either by decreasing extracellular chloride or by adding DIDS to the media. DIDS also prevented 4-AP inhibition of progesterone production. CONCLUSION 4-AP inhibits basal and FSH-stimulated progesterone production by pig granulosa cells via drug action at multiple interacting steps in the steroidogenic pathway. These inhibitory effects of 4-AP on steroidogenesis may reflect drug-induced changes in intracellular concentrations of K+and Cl- as well as granulosa cell resting membrane potential.
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Affiliation(s)
- Yan Li
- Departments of Anatomy & Physiology College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506-5802, USA
| | - Suhasini Ganta
- Departments of Anatomy & Physiology College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506-5802, USA
| | - Fred B von Stein
- Departments of Anatomy & Physiology College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506-5802, USA
| | - Diane E Mason
- Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506-5802, USA
| | - Brianna M Mitchell
- Departments of Anatomy & Physiology College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506-5802, USA
| | - Lisa C Freeman
- Departments of Anatomy & Physiology College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506-5802, USA
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