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Establishment and characterization of a tamoxifen-mediated reversible immortalized mouse dental papilla cell line.
MedLine Citation:
PMID:  23299318     Owner:  NLM     Status:  Publisher    
Odontoblasts are a type of non-proliferating and terminally differentiated cells that play an important role in the pulpo-dentinal complex. Mouse dental papilla cells (mDPCs), which can differentiate into odontoblast-like cells in vitro, have a limited life span. We combined the traditional strategy of "Cre/LoxP-based reversible immortalization" with a tamoxifen-regulated Cre recombination system to generate a tamoxifen-mediated reversibly immortalized mouse dental papilla cell line, mDPCET. mDPCs were sequentially transduced with a floxed SV40 T antigen-TK (SV40Tag-TK) and an (ERT2)Cre(ERT2)-expressing plasmid. Clonal-isolated SV40Tag- and Cre-positive cells showed modified growth characteristics and a significantly extended life span. When mDPCET cells were treated with 4-hydroxytamoxifen, (ERT2)Cre(ERT2) translocated from the cytoplasm to the nucleus and caused the excision of SV40Tag-TK, which led to the reversion of mDPCETs. After the immortalization was reversed, the cells underwent replicative senescence and transitioned into a more differentiated state. Tamoxifen-mediated reversible immortalization, therefore, allows for the expansion of primary mDPCs, leads to the production of odontoblast-like cells that retain most odontoblast-specific properties, and can represent a safe and ready-to-use method due to its simple manipulation.
Heng Lin; Huan Liu; Qin Sun; Guohua Yuan; Lu Zhang; Zhi Chen
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-9
Journal Detail:
Title:  In vitro cellular & developmental biology. Animal     Volume:  -     ISSN:  1543-706X     ISO Abbreviation:  In Vitro Cell. Dev. Biol. Anim.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9418515     Medline TA:  In Vitro Cell Dev Biol Anim     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory for Oral Biomedicine of Ministry of Education (KLOBM), School and Hospital of Stomatology, Wuhan University, Wuhan, 430079, China.
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