PMID- 24232249 OWN - NLM STAT- MEDLINE DCOM- 20140826 LR - 20220408 IS - 1750-2799 (Electronic) IS - 1754-2189 (Print) IS - 1750-2799 (Linking) VI - 8 IP - 12 DP - 2013 Dec TI - In vitro expansion and genetic modification of gastrointestinal stem cells in spheroid culture. PG - 2471-82 LID - 10.1038/nprot.2013.153 [doi] AB - It is useful to be able to grow enriched populations of stem cells in vitro. Growth of stem cells as tissue spheroids is a key methodology permitting sustainable culture of adult epithelial cells. Gastrointestinal stem cells can be propagated by using conditioned medium from a supportive cell line (L-WRN). This protocol describes how to prepare conditioned medium and how to culture stem cell-enriched epithelial spheroids from the mouse gastrointestine. These spheroids are also amenable to genetic modification with recombinant lentiviruses. This system enables many types of cell biological assays that have been performed with immortalized cell lines to be applied to spheroids. Isolation of epithelial cell units from mice takes up to 2 h, and stem cell-enriched gastrointestinal spheroids are obtained within 3 d. Genetically modified spheroids with lentiviruses can be obtained in 2 weeks. FAU - Miyoshi, Hiroyuki AU - Miyoshi H AD - Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA. FAU - Stappenbeck, Thaddeus S AU - Stappenbeck TS LA - eng GR - P30 DK052574/DK/NIDDK NIH HHS/United States GR - R01 DK071619/DK/NIDDK NIH HHS/United States GR - P30-DK52574/DK/NIDDK NIH HHS/United States GR - DK071619/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20131114 PL - England TA - Nat Protoc JT - Nature protocols JID - 101284307 SB - IM MH - Animals MH - *Cell Culture Techniques MH - Cell Line MH - Female MH - Gastrointestinal Tract/*cytology MH - HEK293 Cells MH - Humans MH - Male MH - Mice MH - Mice, Inbred C57BL MH - *Spheroids, Cellular MH - Stem Cells/*cytology PMC - PMC3969856 MID - NIHMS557701 COIS- COMPETING FINANTIAL INTERESTS The authors declare no competing financial interests. EDAT- 2013/11/16 06:00 MHDA- 2014/08/27 06:00 PMCR- 2014/12/01 CRDT- 2013/11/16 06:00 PHST- 2013/11/16 06:00 [entrez] PHST- 2013/11/16 06:00 [pubmed] PHST- 2014/08/27 06:00 [medline] PHST- 2014/12/01 00:00 [pmc-release] AID - nprot.2013.153 [pii] AID - 10.1038/nprot.2013.153 [doi] PST - ppublish SO - Nat Protoc. 2013 Dec;8(12):2471-82. doi: 10.1038/nprot.2013.153. Epub 2013 Nov 14.