Abundant LacZ activity in the absence of Cre expression in the normal and inflamed synovium of adult Col2a1-Cre; ROSA26RLacZ reporter mice.

Abstract:

:Recent analyses of Col2a1-Cre; ROSA26R reporter mice showed that synovial fibroblasts in 7-day mice were LacZ positive, due to a history of Col2a1-Cre expression conferred by their origin in the interzone of the developing joint. We have examined LacZ staining in adult Col2a1-Cre(+/0); ROSA26R(LacZ) mice, with and without inflammatory arthritis, and found that synovial fibroblasts in normal and inflamed synovium are LacZ positive, but Cre negative. Our results suggest that Cre-mediated recombination in joint interzone cells during development endure in adult synovial cells despite the absence of ongoing Cre expression. These findings have important implications and applications for the study of synovial inflammation in models of experimental arthritis.

authors

Fosang AJ,Golub SB,East CJ,Rogerson FM

doi

10.1016/j.joca.2012.11.013

subject

Has Abstract

pub_date

2013-02-01 00:00:00

pages

401-4

issue

2

eissn

1063-4584

issn

1522-9653

pii

S1063-4584(12)01026-6

journal_volume

21

pub_type

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