Derivation of snake venom gland organoids for in vitro venom production

毒液 类有机物 生物 蛇毒 细胞生物学 抗蛇毒血清 体外 计算生物学 生物化学
作者
Jens Puschhof,Yorick Post,Joep Beumer,Harald Kerkkamp,Mátyás A. Bittenbinder,Freek J. Vonk,Nicholas R. Casewell,Michael K. Richardson,Hans Clevers
出处
期刊:Nature Protocols [Springer Nature]
卷期号:16 (3): 1494-1510 被引量:17
标识
DOI:10.1038/s41596-020-00463-4
摘要

More than 400,000 people each year suffer adverse effects following bites from venomous snakes. However, snake venom is also a rich source of bioactive molecules with known or potential therapeutic applications. Manually ‘milking’ snakes is the most common method to obtain venom. Safer alternative methods to produce venom would facilitate the production of both antivenom and novel therapeutics. This protocol describes the generation, maintenance and selected applications of snake venom gland organoids. Snake venom gland organoids are 3D culture models that can be derived within days from embryonic or adult venom gland tissues from several snake species and can be maintained long-term (we have cultured some organoids for more than 2 years). We have successfully used the protocol with glands from late-stage embryos and recently deceased adult snakes. The cellular heterogeneity of the venom gland is maintained in the organoids, and cell type composition can be controlled through changes in media composition. We describe in detail how to derive and grow the organoids, how to dissociate them into single cells, and how to cryopreserve and differentiate them into toxin-producing organoids. We also provide guidance on useful downstream assays, specifically quantitative real-time PCR, bulk and single-cell RNA sequencing, immunofluorescence, immunohistochemistry, fluorescence in situ hybridization, scanning and transmission electron microscopy and genetic engineering. This stepwise protocol can be performed in any laboratory with tissue culture equipment and enables studies of venom production, differentiation and cellular heterogeneity. This protocol describes the generation, maintenance and applications of snake venom gland organoids. These organoids can be derived within days from embryonic or adult venom gland tissues from various snake species.
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