OVARIAN TISSUE CRYOPRESERVATION IN NONHUMAN PRIMATES

这个子项目是许多利用资源的研究子项目之一 由NIH/NCRR资助的中心拨款提供。子项目的主要支持 而子项目的主要调查员可能是由其他来源提供的， 包括其它NIH来源。 列出的子项目总成本可能 代表子项目使用的中心基础设施的估计数量， 而不是由NCRR赠款提供给子项目或子项目工作人员的直接资金。 该项目是路线图联盟（U 54 RR 02437，T。Woodruff，PI），题为“The Oncofertility Consortium：Fertility Preservation for Women”。其目标是提供领先的国家最先进的冷冻保存技术的从业者谁是保存人类卵巢组织的主持下，国家医师合作社。 具体目的是通过比较新型玻璃化冷冻-解冻方法与目前使用的缓慢冷冻方法，优化非人灵长类动物的卵巢冷冻保存方法，以恢复女性癌症幸存者的生育能力。 尽管冷冻保存后的卵巢移植已经产生了活的人类后代，但许多癌症患者的自体移植具有将患者自身的癌症重新播种的风险。在这些患者中，解冻后分离的次级卵泡的封装三维（3D）培养可能是保持生育能力的最佳选择。 由于缓慢冷冻会损害次级卵泡，因此优化卵巢组织玻璃化冷冻可以为患者在移植外利用冷冻卵巢组织填补技术空白。玻璃化冷冻组织中分离的猕猴卵泡第一次能够存活、生长、形成腔并产生类固醇激素，表明冷冻保存的次级卵泡功能得以保存。向玻璃化溶液中添加非渗透性聚合物改善了3D培养中的组织形态和卵泡功能。 目前的努力旨在从3D卵泡培养物中产生成熟的卵母细胞，该卵母细胞可以受精，经历胚胎发育并最终产生活的后代。 该项目是通过与西北大学生物材料核心的互动来促进的。 预期的进展将转移到生育中心的临床工作中。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. This project is part of a Roadmap Consortium (U54 RR02437, T. Woodruff, PI) entitled "The Oncofertility Consortium: Fertility Preservation for Women". The goal is to provide leadership in state-of-the-art cryopreservation technology to practitioners who are preserving human ovarian tissues under the aegis of the National Physicians Cooperative. The specific aim is to optimize ovarian cryopreservation methods in nonhuman primates for restoring fertility in female cancer survivors by comparing novel vitrification freeze-thaw methods to the currently utilized slow freeze method. Although ovarian transplantation after cryopreservation has yielded live human offspring, autologous transfer in many cancer patients carries the risk of re-seeding the patient with her own cancer. In these patients, encapsulated 3-dimensional (3D) culture of isolated secondary follicles post-thaw may be the best option for fertility preservation. Since slow freezing damages secondary follicles, optimization of ovarian tissue vitrification could bridge a technical gap for patients to utilize frozen ovarian tissue outside of transplantation. For the first time, macaque follicles isolated from vitrified tissue can survive, grow, form an antrum and produce steroid hormones, indicating functional preservation of cryopreserved secondary follicles. The addition of non-permeating polymers to the vitrification solution improved tissue morphology and follicle function in 3D culture. Current efforts are aimed at producing a mature oocyte derived from 3D follicle culture that can fertilize, undergo embryonic development and ultimately produce a live offspring. This project is facilitated by interactions with the Biomaterials Core at Northwestern University. Expected advances will be transferred to clinical efforts at Fertility Centers.