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Yao X, Lu Q, Wu Y, Liu J, Liu N, Huang X, Xu C. Effect of Elamipretide on the Vitrification of Mouse Ovarian Tissue by Freezing. Biopreserv Biobank 2024. [PMID: 38648553 DOI: 10.1089/bio.2023.0078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024] Open
Abstract
The importance of ovarian cortical cryopreservation in fertility preservation is receiving increasing attention from reproductive specialists, and mitochondrial dysfunction is an important cause of reduced ovarian tissue cryopreservation. Elamipretide (SS-31) is a novel mitochondria-targeted antioxidant. However, whether it has a protective effect on mouse ovarian tissue cryopreservation remains to be studied. In this study, we examined follicular morphology and viability, mitochondrial function and oxidative stress levels, apoptosis, and culture in vitro after vitrification cryoresuscitation operation by treating ovarian tissues with SS-31 in cryoprotectant resuscitation solution. At the end of the experiment, the addition of 100 μmol/L SS-31 significantly improved follicle quality and oocyte maturation rate in vitro (p < 0.05) and significantly reduced apoptosis (p < 0.05) and oxidative stress levels (superoxide dismutase, catalase, malondialdehyde, p < 0.05). Meanwhile, mitochondrial respiratory chain complex enzyme activity, mtDNA copy number (p < 0.05), and adenosine triphosphate (p < 0.05) content were significantly increased in the 100 μmol/L SS-31-treated group. In addition, the mRNA expression levels of mitochondrial energy metabolism- and biosynthesis-related genes (STRT1, PGC-1a, PPAR-a, TFAM, p < 0.05) were markedly upregulated (p < 0.05) in the 100 μmol/L SS-31 group. In conclusion, SS-31 improved the cryopreservation of ovarian tissues, and 100 μmol/L SS-31 was found to be the most effective.
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Affiliation(s)
- Xingfeng Yao
- Medical College, Guangxi University, Nanning, China
| | - Qingfang Lu
- Medical College, Guangxi University, Nanning, China
| | - Yuyin Wu
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Juan Liu
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Niang Liu
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Xiling Huang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Changlong Xu
- Reproductive Medical Center of Nanning Second People's Hospital, Nanning, China
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Dey P, Monferini N, Donadini L, Lodde V, Franciosi F, Luciano AM. Method of Isolation and In Vitro Culture of Primordial Follicles in Bovine Animal Model. Methods Mol Biol 2024; 2770:171-182. [PMID: 38351454 DOI: 10.1007/978-1-0716-3698-5_13] [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] [Indexed: 02/16/2024]
Abstract
The mammalian ovary is a substantial source of oocytes arranged into follicles at various stages of folliculogenesis, from the primordial to the ovulatory ones. Primordial follicles constitute the most abundant source of gametes inside the mammalian ovary at any given time.The isolation of a high number of primordial follicles, together with the development of protocols for in vitro follicle growth, would provide a powerful tool to fully exploit the female reproductive potential and boost the rescue and restoration of fertility in assisted reproduction technologies in human medicine, animal breeding, and preservation of threatened species. However, the most significant limitation is the lack of efficient methods for isolating a healthy and homogeneous population of viable primordial follicles suitable for in vitro culture. Here, we provide a fast and high-yield strategy for the mechanical isolation of primordial follicles from limited portions of the ovarian cortex in the bovine animal model.
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Affiliation(s)
- Pritha Dey
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, Milan, Italy
| | - Noemi Monferini
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, Milan, Italy
| | - Ludovica Donadini
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, Milan, Italy
| | - Valentina Lodde
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, Milan, Italy
| | - Federica Franciosi
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, Milan, Italy
| | - Alberto Maria Luciano
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, Milan, Italy.
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Gupta P, Johnson P, Kaushik K, Krishna K, Nandi S, Mondal S, Nikhil Kumar Tej J, Somoskoi B, Cseh S. Effect of retinol as antioxidant on the post-thaw viability and the expression of apoptosis and developmental competence-related genes of vitrified preantral follicles in buffalo (Bubalus bubalis). Reprod Domest Anim 2021; 56:1446-1455. [PMID: 34449946 DOI: 10.1111/rda.14009] [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: 06/25/2021] [Accepted: 08/25/2021] [Indexed: 11/30/2022]
Abstract
The present study evaluated the effect of supplementation of retinol in the vitrification solution on the viability, apoptosis and development-related gene expression in vitrified buffalo preantral follicles. Preantral follicles isolated from cortical slices of ovaries were randomly assigned into three groups: Group1-Control fresh preantral follicles; Group 2-Vitrification treatment (Vitrification solution 1 (VS1) -TCM-199 + 25 mM HEPES + Foetal bovine serum (FBS) 10%, Ethylene glycol (EG): 10%, Dimethyl sulphoxide (DMSO): 10%, Sucrose-0.3 M for 4 min; VS2- TCM-199 + 25 mM HEPES + FBS10%, EG:25%, DMSO: 25%, Sucrose:0.3 M for 45 s); Group3-vitrification treatment +5 μM of Retinol. Preantral follicles were placed in corresponding vitrification medium and plunged into liquid nitrogen (-196°C). After a week, the follicles were thawed and analysed for follicular viability and gene expression. There was no significant difference in the viability rates among the Group 1(Fresh preantral follicles) (91.46 ± 2.39%), Group 2 (89.59 ± 2.46%) and Group 3 (87.19 ± 4.05%). There was a significantly (p < .05) higher mRNA expression of BCL2L1, GDF-9 and BMP-15 in the vitrification + retinol group compared with the control group. There was a significantly (p < .05) higher expression of Caspase-3 and Annexin-5 in the vitrification group and Vitrification + retinol group compared with control group of follicles. It is concluded that the supplementation of 5 μM of Retinol in Vitrification solution was an efficient vitrification procedure for the vitrification of buffalo preantral follicles.
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Affiliation(s)
- Psp Gupta
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, India
| | - P Johnson
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, India
| | - K Kaushik
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, India
| | - K Krishna
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, India
| | - S Nandi
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, India
| | - S Mondal
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, India
| | - J Nikhil Kumar Tej
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, India
| | - B Somoskoi
- Department and Clinic of Obstetrics & Reproduction, University of Veterinary Medicine, Budapest, Hungary
| | - S Cseh
- Department and Clinic of Obstetrics & Reproduction, University of Veterinary Medicine, Budapest, Hungary
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4
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Eijkenboom L, Mulder C, van der Reijden B, van Mello N, van Leersum J, Koorenhof-Scheele T, Braat D, Beerendonk C, Peek R. Purging human ovarian cortex of contaminating leukaemic cells by targeting the mitotic catastrophe signalling pathway. J Assist Reprod Genet 2021; 38:1571-1588. [PMID: 33725274 PMCID: PMC8266964 DOI: 10.1007/s10815-021-02081-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 01/19/2021] [Indexed: 12/18/2022] Open
Abstract
PURPOSE Is it possible to eliminate metastasised chronic myeloid leukaemia (CML) and acute myeloid leukaemia (AML) cells from ovarian cortex fragments by inhibition of Aurora B/C kinases (AURKB/C) without compromising ovarian tissue or follicles? METHODS Human ovarian cortex tissue with experimentally induced tumour foci of CML, AML and primary cells of AML patients were exposed to a 24h treatment with 1 μM GSK1070916, an AURKB/C inhibitor, to eliminate malignant cells by invoking mitotic catastrophe. After treatment, the inhibitor was removed, followed by an additional culture period of 6 days to allow any remaining tumour cells to form new foci. Ovarian tissue integrity after treatment was analysed by four different assays. Appropriate controls were included in all experiments. RESULTS Foci of metastasised CML and AML cells in ovarian cortex tissue were severely affected by a 24h ex vivo treatment with an AURKB/C inhibitor, leading to the formation of multi-nuclear syncytia and large-scale apoptosis. Ovarian tissue morphology and viability was not compromised by the treatment, as no significant difference was observed regarding the percentage of morphologically normal follicles, follicular viability, glucose uptake or in vitro growth of small follicles between ovarian cortex treated with 1 μM GSK1070916 and the control. CONCLUSION Purging of CML/AML metastases in ovarian cortex is possible by targeting the Mitotic Catastrophe Signalling Pathway using GSK1070916 without affecting the ovarian tissue. This provides a therapeutic strategy to prevent reintroduction of leukaemia and enhances safety of autotransplantation in leukaemia patients currently considered at high risk for ovarian involvement.
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MESH Headings
- Apoptosis/drug effects
- Aurora Kinase B/genetics
- Aurora Kinase C/genetics
- Aza Compounds/pharmacology
- Cell Line, Tumor
- Cell Survival/drug effects
- Cryopreservation
- Female
- Humans
- Indoles/pharmacology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/therapy
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/pathology
- Leukemia, Myeloid, Acute/therapy
- Mitosis/drug effects
- Mitosis/genetics
- Neoplasm Metastasis
- Ovarian Follicle/drug effects
- Ovarian Follicle/growth & development
- Signal Transduction/drug effects
- Transplantation, Autologous/standards
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Affiliation(s)
- Lotte Eijkenboom
- Department of Obstetrics and Gynaecology, Radboud University Medical Centre, Nijmegen, The Netherlands.
| | - Callista Mulder
- Department of Reproductive Biology, Amsterdam University Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Bert van der Reijden
- Department of Laboratory Medicine, Laboratory of Haematology, Radboud Institute of Molecular Life Sciences, Nijmegen, The Netherlands
| | - Norah van Mello
- Department of Obstetrics and Gynaecology, Amsterdam University Medical Centre, Vrije Universiteit, Amsterdam, The Netherlands
| | - Julia van Leersum
- Department of Obstetrics and Gynaecology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Thessa Koorenhof-Scheele
- Department of Laboratory Medicine, Laboratory of Haematology, Radboud Institute of Molecular Life Sciences, Nijmegen, The Netherlands
| | - Didi Braat
- Department of Obstetrics and Gynaecology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Catharina Beerendonk
- Department of Obstetrics and Gynaecology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Ronald Peek
- Department of Obstetrics and Gynaecology, Radboud University Medical Centre, Nijmegen, The Netherlands
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Bus A, Szymanska K, Pintelon I, Leroy JLMR, Leybaert L, Bols PEJ. Preservation of connexin 43 and transzonal projections in isolated bovine pre-antral follicles before and following vitrification. J Assist Reprod Genet 2020; 38:479-492. [PMID: 33159276 DOI: 10.1007/s10815-020-01993-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/26/2020] [Indexed: 02/07/2023] Open
Abstract
PURPOSE Gap junctions and transzonal projections play a crucial role in intercellular communication between different follicular components and are necessary for follicle development. We aimed to demonstrate gap junction protein connexin 43 (Cx43) and transzonal projections (TZPs) in viable, category 1, isolated bovine pre-antral follicles (PAFs) during short-term culture and after vitrification and warming. METHODS This study involved four experimental groups: fresh control, 2-day culture, 4-day culture, and vitrified secondary PAFs. Isolated PAFs were vitrified using a simple and efficient cryopreservation method by means of mini cell strainers. RESULTS Cx43 and TZPs were detected in pre-antral follicles of all stages, as well as in every experimental group. The group fresh follicles showed a higher percentage of follicles that were positive for Cx43 (91.7%) than the follicles that were vitrified (77.4%). All follicles that were cultured for 2 days were Cx43-positive (100%). Follicles cultured for 4 days (65.8%) (P = 0.002) showed the lowest percentage of follicles that were Cx43-positive. The percentages of the presence or (partial) absence of the TZP network were shown to be very heterogeneous between follicles in different treatment groups. CONCLUSIONS These results suggest the maintenance of communication between the oocyte and the somatic companion cells after vitrification and warming. The varying percentages of the expression of the TZP network within groups suggests that it will be of interest to investigate whether this is truly due to variability in TZP integrity and follicle quality or due to methodological limitations.
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Affiliation(s)
- Anniek Bus
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Veterinary Physiology and Biochemistry, Gamete Research Centre, University of Antwerp, Universiteitsplein 1, U building, 2610, Wilrijk, Belgium.
| | - Katarzyna Szymanska
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, 310 Cedar Street, New Haven, CT, 06510, USA.,Faculty of Medicine and Health Sciences, Department of Basic and Applied Medical Sciences (BAMS), Physiology group, Ghent University, C. Heymanslaan 10, B-9000, Ghent, Belgium
| | - Isabel Pintelon
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Cell Biology and Histology, University of Antwerp, Universiteitsplein 1, T building, 2610, Wilrijk, Belgium
| | - Jo L M R Leroy
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Veterinary Physiology and Biochemistry, Gamete Research Centre, University of Antwerp, Universiteitsplein 1, U building, 2610, Wilrijk, Belgium
| | - Luc Leybaert
- Faculty of Medicine and Health Sciences, Department of Basic and Applied Medical Sciences (BAMS), Physiology group, Ghent University, C. Heymanslaan 10, B-9000, Ghent, Belgium
| | - Peter E J Bols
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Veterinary Physiology and Biochemistry, Gamete Research Centre, University of Antwerp, Universiteitsplein 1, U building, 2610, Wilrijk, Belgium
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Xulu K, Duarte R, Augustine T. Combined Anastrozole and Antiplatelet Therapy Treatment Differentially Promotes Breast Cancer Cell Survival. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2020; 26:497-508. [PMID: 32241309 DOI: 10.1017/s1431927620001324] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Thromboembolic disorders are the second leading cause of death in breast cancer. Antiplatelet therapy combined with cancer therapy is a potential treatment strategy against cancer-associated thromboembolic disorders; however, the efficacy of such dual treatment has not been established. This study reports novel findings on the response of hormone-dependent breast cancer cell lines (MCF7/T47D) following 24 h treatment with Anastrozole, combined with Aspirin and Clopidogrel cocktail; and Atopaxar. Neutral red and lactate dehydrogenase assays were conducted to assess viability and cytotoxicity respectively. Flow cytometric Annexin-V/PI assay was used to assess the mode of cell death. Morphological alterations were studied using scanning electron microscopy. Statistical analysis was conducted using Statistica V13. Definitive outcomes were established with flow cytometric detection of phosphatidylserine exposure and propidium iodide staining, complemented with ultrastructural analysis. Results showed that a few cells were undergoing death mainly through secondary necrosis. Morphological features suggesting induced cell motility (pseudopodia/ruffled membranes) were observed in both cell lines; notably, T47D cells presented pronounced features than MCF7 cells. Overall, these findings suggest that such combined treatment may differentially promote cell survival, inducing a more aggressive breast cancer phenotype.
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Affiliation(s)
- Kutlwano Xulu
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, 2193Johannesburg, South Africa
| | - Raquel Duarte
- Department of Internal Medicine, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, 2193Johannesburg, South Africa
| | - Tanya Augustine
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, 2193Johannesburg, South Africa
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Is the pre-antral ovarian follicle the 'holy grail'for female fertility preservation? Anim Reprod Sci 2019; 207:119-130. [PMID: 31208845 DOI: 10.1016/j.anireprosci.2019.05.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/28/2019] [Accepted: 05/31/2019] [Indexed: 01/18/2023]
Abstract
Fertility preservation is not only a concern for humans with compromised fertility after cancer treatment. The preservation of genetic material from endangered animal species or animals with important genetic traits will also greatly benefit from the development of alternative fertility preservation strategies. In humans, embryo cryopreservation and mature-oocyte cryopreservation are currently the only approved methods for fertility preservation. Ovarian tissue cryopreservation is specifically indicated for prepubertal girls and women whose cancer treatment cannot be postponed. The cryopreservation of pre-antral follicles (PAFs) is a safer alternative for cancer patients who are at risk of the reintroduction of malignant cells. As PAFs account for the vast majority of follicles in the ovarian cortex, they represent an untapped potential, which could be cultivated for reproduction, preservation, or research purposes. Vitrification is being used more and more as it seems to yield better results compared to slow freezing, although protocols still need to be optimized for each specific cell type and species. Several methods can be used to assess follicle quality, ranging from simple viability stains to more complex xenografting procedures. In vitro development of PAFs to the pre-ovulatory stage has not yet been achieved in humans and larger animals. However, in vitro culture systems for PAFs are under development and are expected to become available in the near future. This review will focus on recent developments in (human) fertility preservation strategies, which are often accomplished by the use of in vitro animal models due to ethical considerations and the scarcity of human research material.
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Bus A, van Hoeck V, Langbeen A, Leroy JLMR, Bols PEJ. Effects of vitrification on the viability of alginate encapsulated isolated bovine pre-antral follicles. J Assist Reprod Genet 2018; 35:1187-1199. [PMID: 29797286 DOI: 10.1007/s10815-018-1208-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 05/09/2018] [Indexed: 02/07/2023] Open
Abstract
PURPOSE Individual follicle cryopreservation techniques, without hydrogel support, are labor-intensive and a substantial proportion of isolated follicles are lost during handling and after warming. Therefore, the viability and morphology of isolated bovine (as a model for human) pre-antral follicles after vitrification and warming, when encapsulated in alginate beads, were investigated. METHODS Bovine pre-antral follicles were mechanically isolated and divided into four different groups: (1) culture in 2% alginate beads (3D system) and vitrification in beads using mesh cups (3DVIT), (2) culture in 2% alginate beads (3DCUL), (3) culture in 96-well plates (2D system) and vitrification using High Security Vitrification straws® (2DVIT), (4) culture in a 2D system (2DCUL). The same vitrification and warming protocols were used for embedded (3DVIT) and non-embedded follicles (2DVIT). RESULTS No differences were observed in follicle viability between group 2DCUL and 3DCUL. Group 3DVIT showed the lowest viability (45.9%) according to calcein and neutral red staining among all groups. Group 2DVIT displayed the highest viability (87.5%) and largest percentage of follicles with a well-preserved morphology. CONCLUSIONS Our results show that, using a vitification protocol optimized for non-embedded follicles, 2D culture is more effective in vitrifying isolated follicles. However, embedding in alginate allow to handle follicles more efficiently, i.e., without excessive manipulation and thus less labor-intensive in combination with a reduced loss of follicles during the procedure. Based on the increased work efficiency, but lower viability and higher proportion of follicles showing impaired morphology, we consider it advantageous to optimize the protocol for the vitrification of embedded follicles to increase survival and maintain morphology after vitrification.
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Affiliation(s)
- Anniek Bus
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Veterinary Physiology and Biochemistry, Gamete Research Centre, University of Antwerp, Universiteitsplein 1, Gebouw U, 2610, Wilrijk, Belgium.
| | - Veerle van Hoeck
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Veterinary Physiology and Biochemistry, Gamete Research Centre, University of Antwerp, Universiteitsplein 1, Gebouw U, 2610, Wilrijk, Belgium
| | - An Langbeen
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Veterinary Physiology and Biochemistry, Gamete Research Centre, University of Antwerp, Universiteitsplein 1, Gebouw U, 2610, Wilrijk, Belgium
| | - Jo L M R Leroy
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Veterinary Physiology and Biochemistry, Gamete Research Centre, University of Antwerp, Universiteitsplein 1, Gebouw U, 2610, Wilrijk, Belgium
| | - Peter E J Bols
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Veterinary Physiology and Biochemistry, Gamete Research Centre, University of Antwerp, Universiteitsplein 1, Gebouw U, 2610, Wilrijk, Belgium
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Development of macaque secondary follicles exposed to neutral red prior to 3-dimensional culture. J Assist Reprod Genet 2017; 35:71-79. [PMID: 28936565 DOI: 10.1007/s10815-017-1043-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 09/07/2017] [Indexed: 10/18/2022] Open
Abstract
PURPOSE Neutral red (NR) may assist identification of preantral follicles in pieces of cortical tissue prior to cryopreservation in cancer patients requesting fertility preservation. This study is the first to analyze this effect by follicle growth rate after long-term culture in primates. METHODS Ovarian cortex was obtained from adult rhesus macaques, was cut into fragments, and was incubated with NR. Secondary follicles were readily visualized following NR staining and then were encapsulated into alginate beads and cultured individually for 4 weeks in αMEM media supplemented with 10 ng/ml FSH at 5% O2. RESULTS The survival rates of secondary follicles during culture were similar between those derived from control tissue (71 ± 13%) and those treated with NR (68 ± 9%). The proportion of surviving follicles that formed an antrum were also similar in both groups (70 ± 17% control; 48 ± 24% NR-treated). Follicle diameters were not different between control follicles (184 ± 5μm) and those stained with NR (181 ± 7 μm) on the day of isolation. The percentages of surviving follicles within three cohorts based on their diameters at week 4 of culture were similar between the control group and NR-stained tissue group, fast-grow follicles (24 ± 6% vs. 13 ± 10%), slow-grow follicles (66 ± 5% vs. 60 ± 9%), or no-grow (10 ± 9% vs. 27 ± 6%), respectively. There were no differences in follicle diameters between groups during the culture period. Pre-exposure of secondary follicles to NR diminished their capacity to produce both estradiol and androstenedione by week 4 of culture, when follicles are exhibiting an antrum. Inhibitory effects of NR on steroid production by slow-grow follicles was less pronounced. CONCLUSIONS NR does not affect secondary follicle survival, growth, and antrum formation during long-term culture, but steroid hormone production by fast-grow follicles is compromised. NR can be used as a non-invasive tool for in situ identification of viable secondary follicles in ovarian cortex before tissue cryopreservation without affecting follicle survival and growth in vitro. Whether maturation or developmental competence of oocytes derived from antral follicles in 3D culture that were previously isolated from NR-stained tissue is normal or compromised remains to be determined. Likewise, the functional consequences of pre-exposure to NR prior to ovarian cortical tissue cryopreservation and transplantation are unknown.
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10
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Mouttham L, Comizzoli P. The preservation of vital functions in cat ovarian tissues during vitrification depends more on the temperature of the cryoprotectant exposure than on the sucrose supplementation. Cryobiology 2016; 73:187-95. [PMID: 27475292 DOI: 10.1016/j.cryobiol.2016.07.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 07/25/2016] [Indexed: 10/21/2022]
Abstract
The objective of this study was to better characterize the impact of cryoprotectant exposure (temperature and sucrose supplementation) on the health and function of preantral follicles in ovarian tissues during vitrification using the domestic cat model. Ovarian cortical pieces from peri-pubertal individuals were exposed to cryoprotectants at 4 °C or room temperature and supplemented with 0 or 0.5 M of sucrose, followed by vitrification. After rapid warming, cortical pieces were cultured in vitro and assessed for normal follicular morphology, viability and resumption of transcriptional activities for up to 7 days. Throughout the culture period, follicular morphology (up to 67.5% normal follicles) and global RNA transcription (up to 50.9% follicles with transcriptional activity) in warmed tissues were improved by cryoprotectant exposure at 4 °C compared to room temperature, but viability (up to 84.6% viable follicles) did not seem to be affected by exposure temperature. Sucrose supplementation did not have a consistent effect as it increased RNA transcription but decreased normal follicular morphology. For the first time, the study demonstrated that the preservation of critical tissue functions, such as the transcriptional activities, highly depends on the temperature of the cryoprotectant exposure and not necessarily on the presence of sucrose.
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Affiliation(s)
- Lara Mouttham
- Smithsonian Conservation Biology Institute, National Zoological Park, P.O. Box 37012, MRC 5502, Washington, DC 20008, USA; Department of Biomedical Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Pierre Comizzoli
- Smithsonian Conservation Biology Institute, National Zoological Park, P.O. Box 37012, MRC 5502, Washington, DC 20008, USA.
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Langbeen A, De porte HF, Bartholomeus E, Leroy JL, Bols PE. Bovine in vitro reproduction models can contribute to the development of (female) fertility preservation strategies. Theriogenology 2015; 84:477-89. [DOI: 10.1016/j.theriogenology.2015.04.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 04/01/2015] [Accepted: 04/11/2015] [Indexed: 01/06/2023]
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12
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Jorssen E, Langbeen A, Marei W, Fransen E, De porte H, Leroy J, Bols P. Morphologic characterization of isolated bovine early preantral follicles during short-term individual in vitro culture. Theriogenology 2015; 84:301-11. [DOI: 10.1016/j.theriogenology.2015.03.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 03/21/2015] [Accepted: 03/22/2015] [Indexed: 12/27/2022]
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