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pubmed-article:9564541pubmed:abstractTextWe report development of a model of retroviral gene transduction in high-density limb bud cell micromass culture. The replication competent avian retrovirus RCAS BP (A) carrying the human placental alkaline phosphatase gene (RCAS AP) was used as a marker for retroviral infection and spread. The final protocol balances the need to allow time for retroviral integration and gene transduction against loss of chondrogenic potential when limb bud cells are plated at low density. It includes: (i) incubation of the dissociated limb bud cells with RCAS virus for 2 h followed by low-density culture for 48 h to allow retroviral gene expression; and (ii) secondary replating as high-density micromass culture to initiate chondrogenesis. The pattern and level of chondrogenesis in the retrovirus-transduced micromass cultures is similar to regular micromass cultures. At least 40%-50% of cells express the retroviral-transduced genes 24 h after high-density plating. This new approach facilitates ectopic gene expression in micromass culture, enabling molecular dissection of chondrogenesis and serves as a model for gene transduction in other organotypic cultures.lld:pubmed
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pubmed-article:9564541pubmed:authorpubmed-author:LeeY SYSlld:pubmed
pubmed-article:9564541pubmed:authorpubmed-author:ChuongC MCMlld:pubmed
pubmed-article:9564541pubmed:authorpubmed-author:StottN SNSlld:pubmed
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pubmed-article:9564541pubmed:pagination660-6lld:pubmed
pubmed-article:9564541pubmed:dateRevised2007-11-15lld:pubmed
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pubmed-article:9564541pubmed:year1998lld:pubmed
pubmed-article:9564541pubmed:articleTitleRetroviral gene transfer in chondrogenic limb bud micromass cultures.lld:pubmed
pubmed-article:9564541pubmed:affiliationDepartment of Pathology, University Southern California, Los Angeles 90033, USA.lld:pubmed
pubmed-article:9564541pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:9564541pubmed:publicationTypeResearch Support, U.S. Gov't, P.H.S.lld:pubmed
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