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Wu M, Xue L, Guo Y, Dong X, Chen Z, Wei S, Yi X, Li Y, Zhang J, Zhou S, Wu M, Lou X, Dai J, Xia F, Wang S. Microenvironmentally Responsive Chemotherapeutic Prodrugs and CHEK2 Inhibitors Self-Assembled Micelles: Protecting Fertility and Enhancing Chemotherapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2210017. [PMID: 36528787 DOI: 10.1002/adma.202210017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Chemotherapy is a widely used and effective adjuvant treatment for cancer, and it has unavoidable damage to female fertility, with statistics showing 38% of women who have received chemotherapy are infertile. How to reduce fertility toxicity while enhancing the oncologic chemotherapy is a clinical challenge. Herein, co-delivery micelles (BML@PMP) are developed, which are composed of a reduction-sensitive paclitaxel prodrug (PMP) for chemotherapy and a CHEK2 inhibitor (BML277) for both fertility protection and chemotherapy enhancement. BML@PMP achieves fertility protection through three actions: (1) Due to the enhanced permeability and retention (EPR) effect, BML@PMP is more enriched in the tumor, while very little in the ovary (about 1/10th of the tumor). (2) Glutathione (GSH) triggers the release of PTX, and with low levels of GSH in the ovary, the amount of PTX released in the ovary is correspondingly reduced. (3) BML277 inhibits oocyte apoptosis by inhibiting the CHEK2-TAp63α pathway. Because of the different downstream targets of CHEK2 in tumor cells and oocytes, BML277 also enhances chemotherapeutic efficacy by reducing DNA damage repair which is activated through the CHEK2 pathway. This bidirectional effect of CHEK2 inhibitor-based co-delivery system represents a promising strategy for improving oncology treatment indices and preventing chemotherapy-associated fertility damage.
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Affiliation(s)
- Meng Wu
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, 430030, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, 430030, China
| | - Liru Xue
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, 430030, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, 430030, China
| | - Yican Guo
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, 430030, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, 430030, China
| | - Xiaoqi Dong
- State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Zhaojun Chen
- State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Simin Wei
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, 430030, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, 430030, China
| | - Xiaoqing Yi
- Key Laboratory of Biomaterials and Biofabrication in Tissue Engineering of Jiangxi Province, Gannan Medical University, Ganzhou, 341000, China
| | - Yinuo Li
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, 430030, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, 430030, China
| | - Jinjin Zhang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, 430030, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, 430030, China
| | - Su Zhou
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, 430030, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, 430030, China
| | - Mingfu Wu
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, 430030, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, 430030, China
| | - Xiaoding Lou
- State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Jun Dai
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, 430030, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, 430030, China
| | - Fan Xia
- State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Shixuan Wang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- National Clinical Research Center for Obstetrical and Gynecological Diseases, Wuhan, 430030, China
- Key Laboratory of Cancer Invasion and Metastasis, Ministry of Education, Wuhan, 430030, China
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Liu G, Li S, Yuan H, Hao M, Wurihan, Yun Z, Zhao J, Ma Y, Dai Y. Effect of sodium alginate on mouse ovary vitrification. Theriogenology 2018; 113:78-84. [DOI: 10.1016/j.theriogenology.2018.02.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 02/08/2018] [Accepted: 02/08/2018] [Indexed: 10/18/2022]
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Freeze/thaw stress induces organelle remodeling and membrane recycling in cryopreserved human mature oocytes. J Assist Reprod Genet 2016; 33:1559-1570. [PMID: 27586998 DOI: 10.1007/s10815-016-0798-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 08/16/2016] [Indexed: 12/12/2022] Open
Abstract
PURPOSE Our aim was to evaluate the ultrastructure of human metaphase II oocytes subjected to slow freezing and fixed after thawing at different intervals during post-thaw rehydration. METHODS Samples were studied by light and transmission electron microscopy. RESULTS We found that vacuolization was present in all cryopreserved oocytes, reaching a maximum in the intermediate stage of rehydration. Mitochondria-smooth endoplasmic reticulum (M-SER) aggregates decreased following thawing, particularly in the first and intermediate stages of rehydration, whereas mitochondria-vesicle (MV) complexes augmented in the same stages. At the end of rehydration, vacuoles and MV complexes both diminished and M-SER aggregates increased again. Cortical granules (CGs) were scarce in all cryopreserved oocytes, gradually diminishing as rehydration progressed. CONCLUSIONS This study also shows that such a membrane remodeling is mainly represented by a dynamic process of transition between M-SER aggregates and MV complexes, both able of transforming into each other. Vacuoles and CG membranes may take part in the membrane recycling mechanism.
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Abedpour N, Rajaei F. Vitrification by Cryotop and the Maturation, Fertilization, and Developmental Rates of Mouse Oocytes. IRANIAN RED CRESCENT MEDICAL JOURNAL 2015; 17:e18172. [PMID: 26568845 PMCID: PMC4636753 DOI: 10.5812/ircmj.18172] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 01/28/2015] [Accepted: 03/28/2015] [Indexed: 12/28/2022]
Abstract
Background: Oocyte cryopreservation is an important part of modern fertility treatment. The effect of vitrification on the fertilization and developmental rates of embryo is still a matter of debate. Objectives: This study aimed to investigate the effect of vitrification on the success of mouse oocyte maturation, fertilization, and preimplantation development in vitro. Materials and Methods: In this experimental study, a total of 200 germinal vesicle (GV) and 200 metaphase II (MII) oocytes were obtained from ovaries and fallopian tubes of NMRI mice, respectively and divided into two control and experimental (vitrified) groups. Oocytes in the experimental group were vitrified by Cryotop using vitrification medium (Origio, Denmark) and kept in liquid nitrogen for one month. Then, they were cultured in maturation medium for 24 hours. In vitro maturated metaphase 2 (IVM-MII) and ovulated metaphase 2 (OV-MII) oocytes were inseminated and the fertilized embryos assessed until the hatching blastocyst stage. Outcomes were assessed for statistical significance by Chi-square test using SPSS software. Results: Vitrification caused a significant reduction in the maturation rate of oocytes. Of those that matured, the fertilization rate of vitrified IVM-MII (44.1%) and OV-MII oocytes (50%) was not significantly different from each other but both were significantly lower than the control group (P < 0.05). There was no significant difference in developmental rates of both vitrified groups and the control group. Conclusions: The present study showed that vitrification using Cryotop and freezing medium can damage oocytes by reducing the maturation and fertilization rates in both developmental stages.
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Affiliation(s)
- Neda Abedpour
- Cellular and Molecular Research Centre, Qazvin University of Medical Sciences, Qazvin, IR Iran
| | - Farzad Rajaei
- Cellular and Molecular Research Centre, Qazvin University of Medical Sciences, Qazvin, IR Iran
- Fertility and Infertility Research Centre, Kosar Hospital, Qazvin University of Medical Sciences, Qazvin, IR Iran
- Corresponding Author: Farzad Rajaei, Cellular and Molecular Research Centre, Qazvin University of Medical Sciences, Qazvin, IR Iran. Tel: +98-2833336001, Fax: +98-2833324970, E-mail:
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Effect of mouse oocyte vitrification on mitochondrial membrane potential and distribution. ACTA ACUST UNITED AC 2014; 34:99-102. [DOI: 10.1007/s11596-014-1238-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 12/05/2013] [Indexed: 10/25/2022]
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Vitreous preservation of articular cartilage from cryoinjury in rabbits. Cryobiology 2012; 65:98-103. [DOI: 10.1016/j.cryobiol.2012.05.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Revised: 05/08/2012] [Accepted: 05/14/2012] [Indexed: 11/17/2022]
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Khalili MA, Maione M, Palmerini MG, Bianchi S, Macchiarelli G, Nottola SA. Ultrastructure of human mature oocytes after vitrification. Eur J Histochem 2012; 56:e38. [PMID: 23027354 PMCID: PMC3493984 DOI: 10.4081/ejh.2012.e38] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2012] [Accepted: 07/02/2012] [Indexed: 11/23/2022] Open
Abstract
Since the introduction of human assisted reproduction, oocyte cryopreservation has been regarded as an attractive option to capitalize the reproductive potential of surplus oocytes and preserve female fertility. However, for two decades the endeavor to store oocytes has been limited by the not yet optimized methodologies, with the consequence of poor clinical outcome or of uncertain reproducibility. Vitrification has been developed as the promising technology of cryopreservation even if slow freezing remains a suitable choice. Nevertheless, the insufficiency of clinical and correlated multidisciplinary data is still stirring controversy on the impact of this technique on oocyte integrity. Morphological studies may actually provide a great insight in this debate. Phase contrast microscopy and other light microscopy techniques, including cytochemistry, provided substantial morpho-functional data on cryopreserved oocyte, but are unable to unraveling fine structural changes. The ultrastructural damage is one of the most adverse events associated with cryopreservation, as an effect of cryo-protectant toxicity, ice crystal formation and osmotic stress. Surprisingly, transmission electron microsco py has attracted only limited attention in the field of cryopreservation. In this review, the subcellular structure of human mature oocytes following vitrification is discussed at the light of most relevant ultrastructural studies.
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Affiliation(s)
- M A Khalili
- Department of Anatomy, Histology, Forensic Medicine and Orthopaedics, La Sapienza University, Rome, Italy.
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Gomes C, Merlini M, Konheim J, Serafini P, Motta EL, Baracat EC, Smith GD. Oocyte meiotic-stage-specific differences in spindle depolymerization in response to temperature changes monitored with polarized field microscopy and immunocytochemistry. Fertil Steril 2012; 97:714-9. [DOI: 10.1016/j.fertnstert.2011.12.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 11/16/2011] [Accepted: 12/14/2011] [Indexed: 10/14/2022]
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Campos JR, Rosa-e-Silva ACJDS. Cryopreservation and fertility: current and prospective possibilities for female cancer patients. ISRN OBSTETRICS AND GYNECOLOGY 2011; 2011:350813. [PMID: 22191044 PMCID: PMC3236388 DOI: 10.5402/2011/350813] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Accepted: 10/26/2011] [Indexed: 11/23/2022]
Abstract
With the evolution of the treatment of malignant neoplasms, the survival rates of patients undergoing chemo- or radiotherapy are increasing. The continuous development of techniques of assisted human reproduction has led to important strategies in an attempt to maintain reproductive function in patients subjected to treatment of neoplastic diseases, among them cryopreservation of embryos, gametes, and ovarian cortical tissue. The freezing of ovarian tissue is currently being proposed with the primary purpose of preserving ovarian function in these patients. Currently, the major challenge of groups working with preservation of fertility is the use of cryopreserved ovarian tissue after disease remission. The main alternatives presented today are the implantation of hetero- or orthotopic tissue and isolation of immature follicles from ovarian tissue followed by in vitro maturation and assisted reproduction procedures.
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Affiliation(s)
- Jacira Ribeiro Campos
- Department of Obstetrics and Gynecology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, 14049-900 Ribeirão Preto, SP, Brazil
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Cryopreservation of ovarian tissue: An emerging technology for female germline preservation of endangered species and breeds. Anim Reprod Sci 2010; 122:151-63. [DOI: 10.1016/j.anireprosci.2010.08.010] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Revised: 08/05/2010] [Accepted: 08/10/2010] [Indexed: 11/23/2022]
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Zervoudis S, Iatrakis G, Navrozoglou I. Reproduction after breast cancer. Best Pract Res Clin Obstet Gynaecol 2010; 24:81-6. [PMID: 20170848 DOI: 10.1016/j.bpobgyn.2009.08.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Revised: 08/04/2009] [Accepted: 08/14/2009] [Indexed: 10/19/2022]
Abstract
Breast cancer is the most frequently occurring cancer in women of developed countries, and as a result of new developments in breast cancer treatment, more women are cured after being diagnosed with this disease. It is important that fertility preservation strategies are addressed before chemotherapy, because chemotherapy may induce premature ovarian failure (depending on the woman's age, the drugs used, the dosage and duration of treatment). Among possible solutions are embryos or oocytes cryopreservation, ovarian tissue cryopreservation-freezing with a subsequent orthotopic and heterotopic autotransplantation, whole ovary cryopreservation, ovarian suppression with gonadotropin-releasing hormone (GnRH) analogues, which inhibit ovarian follicular depletion induced by chemotherapeutic agents and in vitro fertilisation (IVF) after ovulation induction with aromatase inhibitors or tamoxifen.
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Hayashi M, Tsuchiya H, Otoi T, Agung B, Yamamoto N, Tomita K. Influence of freezing with liquid nitrogen on whole-knee joint grafts and protection of cartilage from cryoinjury in rabbits. Cryobiology 2009; 59:28-35. [DOI: 10.1016/j.cryobiol.2009.04.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2008] [Revised: 03/05/2009] [Accepted: 04/02/2009] [Indexed: 10/20/2022]
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Dondorp W, De Wert G. Fertility preservation for healthy women: ethical aspects. Hum Reprod 2009; 24:1779-85. [DOI: 10.1093/humrep/dep102] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Vitrification of immature mouse oocyte using stepwise equilibration before or after in vitro maturation. Fertil Steril 2009; 92:1153-1157. [PMID: 19324336 DOI: 10.1016/j.fertnstert.2009.02.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2008] [Revised: 02/04/2009] [Accepted: 02/10/2009] [Indexed: 11/20/2022]
Abstract
Immature mouse oocytes before or after in vitro maturation (IVM) were vitrified by the use of either conventional one-step or three-step equilibration. Although vitrification after IVM using the stepwise method does not affect the cleavage rate, the early embryonic development was profoundly impaired in both protocols.
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Cryopreservation and autotransplantation of human ovarian tissue prior to cytotoxic therapy--a technique in its infancy but already successful in fertility preservation. Eur J Cancer 2009; 45:1547-53. [PMID: 19264478 DOI: 10.1016/j.ejca.2009.01.029] [Citation(s) in RCA: 162] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2008] [Revised: 12/31/2008] [Accepted: 01/09/2009] [Indexed: 11/24/2022]
Abstract
Increasing survival rates in young cancer patients, new reproductive techniques and the growing interest in quality of life after gonadotoxic cancer therapies have placed fertility preservation as an important issue to oncologists, fertility specialists and patients. Several techniques are now available for fertility preservation in these patients. A new promising method is cryopreservation and transplantation of ovarian cortex. Ovarian tissue can be extracted by laparoscopy without any significant delay of gonadotoxic therapy. The tissue can be cryopreserved by specialised centres of reproductive medicine and transplanted in case the women experience premature ovarian failure (POF). This review summarises the European expertise on cryopreservation and transplantation of ovarian tissue, following around 30 reported transplantations globally, resulting in six live births and several ongoing pregnancies. It emphasises that fertility preservation by the cryopreservation of ovarian tissue is a new but already a successful clinical option, which can be considered for selected cancer patients.
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Nottola SA, Coticchio G, Sciajno R, Gambardella A, Maione M, Scaravelli G, Bianchi S, Macchiarelli G, Borini A. Ultrastructural markers of quality in human mature oocytes vitrified using cryoleaf and cryoloop. Reprod Biomed Online 2009; 19 Suppl 3:17-27. [DOI: 10.1016/s1472-6483(10)60280-5] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Pregnancy and Assisted Reproduction Techniques in Men and Women after Cancer Treatment. Placenta 2008; 29 Suppl B:152-9. [DOI: 10.1016/j.placenta.2008.07.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2008] [Revised: 07/15/2008] [Accepted: 07/17/2008] [Indexed: 01/15/2023]
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Blumenfeld Z, von Wolff M. GnRH-analogues and oral contraceptives for fertility preservation in women during chemotherapy. Hum Reprod Update 2008; 14:543-52. [PMID: 18824495 DOI: 10.1093/humupd/dmn022] [Citation(s) in RCA: 129] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND For preserving fertility in women during chemotherapy, the character of invasive techniques, such as ovarian cryopreservation and other techniques, await further experience. Meanwhile, non-invasive techniques have attempted to minimize the gonadotoxic effect of chemotherapy, by using gonadotrophin-releasing hormone-analogues (GnRH-a) or oral contraceptives (OC). METHODS We performed a computerized MEDLINE search to identify articles published on fertility preservation using GnRH-a or OCs. RESULTS Nine human-controlled studies reported the use of GnRH-a and four reported the use of OCs in parallel to chemotherapy. All nine studies analysing the effect of GnRH-a found lower rates of premature ovarian failure (POF) in patients receiving GnRH-a compared with the controls. Summarizing the studies resulted in 11.1% incidence of POF in patients who received GnRH-a compared with 55.5% incidence in the controls. Evidence using the fertility preserving effect of OC is limited. Two studies showed lower POF rates in OC-treated patients. The summarized data revealed a POF rate of 13.2% in patients who received OCs compared with that of 29.8% in the controls. CONCLUSIONS The published clinical studies provide evidence, but do not prove statistically, that GnRH-a co-treatment reduces gonadotoxicity. Owing to the retrospective and non-randomized nature of most of the studies, definite conclusions concerning the reduction of POF by GnRH-a can still not be unequivocally drawn. As GnRH-a and OC have no serious side effects and as GnRH-a can even reduce chemotherapy-induced complications, such as severe menometrorrhagia, GnRH-a are considered by many clinicians as a clinically useful co-treatment in chemotherapy. The published clinical studies on OC also suggest a possible effect on the reduction of POF under certain conditions.
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Affiliation(s)
- Zeev Blumenfeld
- Reproductive Endocrinology and Infertility Section, Department of Obstetrics and Gynaecology, Rambam Health Care Campus, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 31096, Israel.
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Grazul-Bilska AT, Banerjee J, Yazici I, Borowczyk E, Bilski JJ, Sharma RK, Siemionov M, Falcone T. Morphology and function of cryopreserved whole ovine ovaries after heterotopic autotransplantation. Reprod Biol Endocrinol 2008; 6:16. [PMID: 18402709 PMCID: PMC2323016 DOI: 10.1186/1477-7827-6-16] [Citation(s) in RCA: 35] [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: 01/04/2008] [Accepted: 04/11/2008] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND The objective of this study was to perform complex characterization of cryopreserved and then autotransplanted ovaries including determination of the ability to respond to in vivo follicle stimulating hormone (FSH)-treatment, fertilizability of retrieved oocytes, and morphology, vascularization, cellular proliferation and apoptosis in sheep. METHODS Mature crossbred ewes were divided into two groups; an intact (control) group (n = 4), and autotransplanted group (n = 4) in which oophorectomy was performed laparoscopically and ovaries with intact vascular pedicles frozen, thawed and transplanted back into the same animal at a different site. Approximately five months after autotransplantation, estrus was synchronized, ewes were treated with FSH, and ovaries were collected. For all ovaries, number of visible follicles was determined, and collected cumulus oocyte complexes (COC) were matured and fertilized in vitro. Remaining ovarian tissues were fixed for evaluation of morphology, expression of factor VIII (marker of endothelial cells), vascular endothelial growth factor (VEGF; expressed by pericytes and smooth muscle cells), and smooth muscle cell actin (SMCA; marker of pericytes and smooth muscle cells), and cellular proliferation and apoptosis. Two fully functional ovaries were collected from each control ewe (total 8 ovaries). RESULTS Out of eight autotransplanted ovaries, a total of two ovaries with developing follicles were found. Control ewes had 10.6 +/- 2.7 follicles/ovary, oocytes were in vitro fertilized and developed to the blastocyst stage. One autotransplanted ewe had 4 visible follicles from which 3 COC were collected, but none of them was fertilized. The morphology of autotransplanted and control ovaries was similar. In control and autotransplanted ovaries, primordial, primary, secondary, antral and preovulatory follicles were found along with fully functional vascularization which was manifested by expression of factor VIII, VEGF and SMCA. Proliferating cells were detected in follicles, and the rate of apoptosis was minimal in ovaries of control and autotransplanted ovaries. CONCLUSION These data demonstrate successful autotransplantation of a portion of frozen/thawed ovaries manifested by restoration of selected ovarian function including in vitro maturation of collected oocytes, presence of follicles from several stages of folliculogenesis and blood vessels expressing specific markers of vascularization, and proliferation and apoptosis of ovarian cells. Thus, heterotopic autotransplantation of a whole frozen/thawed ovary allows for development of preovulatory follicles, oocyte growth, and for restoration of vascularization and cellular function. However, additional improvements are required to enhance the efficiency of autotransplantation of frozen/thawed ovaries to produce more oocytes.
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Affiliation(s)
| | - Jashoman Banerjee
- Obstetrics, Gynecology and Women's Health Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Ilker Yazici
- Obstetrics, Gynecology and Women's Health Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Ewa Borowczyk
- Department of Animal Sciences, North Dakota State University, Fargo, ND, USA
| | - Jerzy J Bilski
- Department of Animal Sciences, North Dakota State University, Fargo, ND, USA
| | - Rakesh K Sharma
- Obstetrics, Gynecology and Women's Health Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Maria Siemionov
- Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH, USA
| | - Tommaso Falcone
- Obstetrics, Gynecology and Women's Health Institute, Cleveland Clinic, Cleveland, OH, USA
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Human ovarian tissue cryopreservation: effect of sucrose concentration on morphological features after thawing. Reprod Biomed Online 2008; 16:257-67. [DOI: 10.1016/s1472-6483(10)60583-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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