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Nuclear transferred embryonic stem cells for analysis of B1 B-lymphocyte development.

Takase, Mitsuyo; Iida, Ryuji; Maruya, Mikako; Sakaue-Sawano, Asako; Miyawaki, Atsushi; Wakayama, Teruhiko; Nishigami, Satoshi; Fagarasan, Sidonia; Kanagawa, Osami.
Int Immunol; 25(3): 145-56, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23042789
The transfer of nuclei of fully differentiated cells into enucleated oocytes is a well-recognized method for the generation of embryonic stem (ES) cells. Here, we demonstrate that nuclear transferred ES (NT-ES) cells can be established with high efficiency using innate-like B lymphocytes as donor cells. We established two mouse lines carrying rearranged immunoglobulin heavy and light chains using NT-ES cells containing nuclei from peritoneal cavity B1 cells. Analysis of B1 clone lines revealed that the B1-cell generation critically depends on the interaction between antigen (possibly self-antigen) and surface immunoglobulin, while the B1-cell maintenance requires the peritoneal environment. The B1-cell expansion takes place in spleen, and is held in check by competitor B2 cells. The results indicate that the NT-ES method could replace the transgenic or knock-in mouse approaches currently used to study the biology of cells that undergo somatic rearrangements of their antigen receptor genes.
Selo DaSilva