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濒危普氏野马,由历史冷冻保存细胞克隆而来。

Endangered Przewalski's Horse, , Cloned from Historically Cryopreserved Cells.

作者信息

Novak Ben J, Ryder Oliver A, Houck Marlys L, Walker Kelcey, Russell Lexie, Russell Blake, Walker Shawn, Arenivas Sanaz Sadeghieh, Aston Lauren, Veneklasen Gregg, Ivy Jamie A, Koepfli Klaus-Peter, Rusnak Anna, Simek Jaroslav, Zhuk Anna, Putnam Andrea S, Phelan Ryan

机构信息

Revive & Restore, 1505 Bridgeway #203, Sausalito, CA 94965, USA.

Beckman Center for Conservation Research, San Diego Zoo Wildlife Alliance, Escondido, CA 92027, USA.

出版信息

Animals (Basel). 2025 Feb 20;15(5):613. doi: 10.3390/ani15050613.

Abstract

Cloning from historically cryopreserved cells offers a potential means to restore lost genetic variation or increase the representation of particular lineages within bottlenecked species, provided such biobanked materials are archived for such genetic rescue applications. One species for which cloning can provide genetic management benefits is Przewalski's horse, . All ~1800 living Przewalski's horses, distributed across ex situ breeding facilities and in situ reintroduction sites, are descended from one or more of the five founder lineages established by the 12 horses captured from the wild between 1898 and 1947. Since the 1970s, the San Diego Zoo Wildlife Alliance Biodiversity Bank's Frozen Zoo (Escondido, CA, USA) has biobanked cells or tissues of 575 individuals spanning many generations. A pedigree analysis of a subset of deceased individuals represented in the San Diego Zoo Wildlife Alliance Biodiversity Bank's Frozen Zoo revealed an underrepresented male that lived from 1975 to 1998, Studbook Number 615 (also known as Kuporovitch), who would be of high value for breeding if cloned. Here, we report that two healthy clones were produced from this cell line using cross-species somatic cell nuclear transfer from 2020 to 2023. Their identification as clones was verified by a standard horse-pedigree genotyping panel, and, for one clone, a whole genome sequencing comparison to the original donor was performed. This is the first time that multiple healthy clones surviving the perinatal period have been produced for an endangered species.

摘要

从历史上冷冻保存的细胞中进行克隆提供了一种潜在的手段,可用于恢复丧失的遗传变异或增加瓶颈物种中特定谱系的代表性,前提是此类生物样本库中的材料是为这种基因拯救应用而存档的。普氏野马就是一种可以从克隆中获得遗传管理益处的物种。所有现存的约1800匹普氏野马,分布在异地繁殖设施和就地重新引入地点,均来自1898年至1947年间从野外捕获的12匹马所建立的五个创始谱系中的一个或多个。自20世纪70年代以来,圣地亚哥动物园野生动物联盟生物多样性银行的冷冻动物园(美国加利福尼亚州埃斯孔迪多)已经对跨越许多代的575个个体的细胞或组织进行了生物样本库保存。对圣地亚哥动物园野生动物联盟生物多样性银行冷冻动物园中部分已故个体的系谱分析显示,有一头代表性不足的雄性个体,它生活于1975年至1998年,谱系编号615(也称为库波罗维奇),如果进行克隆,对于繁殖具有很高的价值。在此,我们报告在2020年至2023年期间,利用跨物种体细胞核移植从该细胞系中产生了两个健康的克隆体。通过标准的马谱系基因分型面板验证了它们作为克隆体的身份,并且对其中一个克隆体与原始供体进行了全基因组测序比较。这是首次为一个濒危物种培育出多个在围产期存活的健康克隆体。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7544/11898140/b0c188fe496f/animals-15-00613-g001.jpg

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