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首页> 外文期刊>Journal of tissue engineering and regenerative medicine >Evaluation of an ovary-on-a-chip in large mammalian models: Species specificity and influence of follicle isolation status
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Evaluation of an ovary-on-a-chip in large mammalian models: Species specificity and influence of follicle isolation status

机译:评估大型哺乳动物模型中的卵巢芯片:物种特异性和卵泡隔离状态的影响

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The ability to grow oocytes from immature ovarian follicles in vitro has significant potential for fertility preservation; yet, it has proved challenging in large mammalian species due to the complex metabolic needs and long-term culture requirements. Currently, follicular incubations are based on a "static" system with manual exchange of medium. Despite the numerous advantages of conventional culturing approaches, recapitulating the native microenvironment and supporting the survival of ovarian follicles from large mammalian species still represent challenges. In this study, we utilized an innovative, dynamic microfluidic system to support the in vitro survival of domestic cat and dog follicles enclosed within the ovarian cortex or isolated from ovarian cortex. Results indicate both species-specific and tissue type-specific differences in response to microfluidic culture. Domestic cat but not dog ovarian cortical tissues maintained viability under flow similar to conventional agarose gel controls. Preantral stage isolated follicles from both species that grew most favourably in conventional alginate bead culture, but overall, there was no influence of culture system on expression of follicle development or oocyte health markers. This system represents an important exploration toward the development of an improved ovarian in vitro culture system of large mammalian species (e.g., cats and dogs), which has potential applications for fertility preservation, reproductive toxicology, and endangered mammal conservation efforts.
机译:在体外从未成熟卵卵巢卵泡生长卵母细胞的能力具有巨大的生育保存潜力;然而,由于复杂的代谢需求和长期文化要求,它已经证明了大型哺乳动物物种的挑战。目前,卵泡孵化基于具有手动交换介质的“静态”系统。尽管常规培养方法具有许多优点,但综合本地微环境并支持来自大型哺乳动物物种的卵巢卵泡的存活仍然代表挑战。在这项研究中,我们利用了一种创新的动态微流体系统来支持国内猫和狗卵泡的体外存活,蜂窝皮层或卵巢皮质分离。结果表明响应微流体培养物的特异性和组织类型特异性差异。国内猫但不是狗卵巢皮质组织保持活力与常规琼脂糖凝胶对照相似。从常规海藻酸盐珠培养中获得最有利的两种种类的预级卵泡,但总体而言,培养体系对卵泡发育或卵母细胞健康标志物的表达没有影响。该系统代表了对大型哺乳动物种类(例如猫和狗)改善卵巢体外培养系统的重要探索,其具有潜在的生育保存,生殖毒理学和濒危哺乳动物保护努力的应用。

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