Abstract
Wnt dependency and Lgr5 expression define multiple mammalian epithelial stem cell types. Under defined growth factor conditions, such adult stem cells (ASCs) grow as 3D organoids that recapitulate essential features of the pertinent epithelium. Here, we establish long-term expanding venom gland organoids from several snake species. The newly assembled transcriptome of the Cape coral snake reveals that organoids express high levels of toxin transcripts. Single-cell RNA sequencing of both organoids and primary tissue identifies distinct venom-expressing cell types as well as proliferative cells expressing homologs of known mammalian stem cell markers. A hard-wired regional heterogeneity in the expression of individual venom components is maintained in organoid cultures. Harvested venom peptides reflect crude venom composition and display biological activity. This study extends organoid technology to reptilian tissues and describes an experimentally tractable model system representing the snake venom gland.
| Original language | English |
|---|---|
| Pages (from-to) | 233-247.e21 |
| Number of pages | 37 |
| Journal | Cell |
| Volume | 180 |
| Issue number | 2 |
| Early online date | 23 Jan 2020 |
| DOIs | |
| Publication status | Published - 23 Jan 2020 |
Funding
We thank Reinier van der Linden for flow cytometry assistance; Benedetta Artegiani and Delilah Hendriks for generation of CRISPR-HOT technology and assistance in applying it to snake venom gland organoids; Anko de Graaff and the Hubrecht Imaging Centre (HIC) for microscopy assistance; BaseClear B.V. for bulk mRNA sequencing and de novo transcriptome assembly; Bas Ponsioen for providing the lentiviral H2B-RFP construct; Single Cell Discoveries for the provided single-cell sequencing service and support; Jeremie Tai-A-Pin and Harold van der Ploeg for donating venom gland material to this study; and Sebastiaan Voskuil, Edwin Boel, Marc Bonten, and Frank Driehuis for advice regarding antibiotic treatments. X.M.S. was supported by ALS Foundation Netherlands . N.R.C. was supported by a Sir Henry Dale Fellowship ( 200517/Z/16/Z ) jointly funded by the Wellcome Trust and the Royal Society .
| Funders | Funder number |
|---|---|
| Edwin Boel | |
| Hubrecht Imaging Centre | |
| Mimetas | |
| Sebastiaan Voskuil | |
| Wellcome Trust | |
| Royal Society | |
| Stichting ALS Nederland | 200517/Z/16/Z |
Keywords
- heterogeneity
- knock-in reporter
- Lgr5
- organoid
- single cell RNA sequencing
- snake
- stem cells
- transcriptomics
- venom gland