Affiliation:
1. Department of Molecular Biology, AstraZeneca R & D Mölndal, SE-431 83 Mölndal
2. Department for Stem Cell Biology, Lund University, SE-221 84 Lund, Sweden
Abstract
ABSTRACT
Olf-1/early B-cell factor (O/E-1) is a transcription factor important for B-lymphocyte and neuronal gene regulation. Here we report that all three known O/E genes (
O/E-1
,
-2
, and
-3
) are expressed in mouse adipose tissue and are upregulated during adipocyte differentiation. Forced expression of O/E-1 in either the preadipocyte cell line 3T3-L1 or mouse embryonic fibroblasts augmented adipogenesis, and constitutive expression of O/E-1 in uncommitted NIH 3T3 fibroblasts led to initiation of adipocyte differentiation. Furthermore, a dominant negative form of O/E-1 partially suppressed 3T3-L1 adipogenesis, indicating that expression from endogenous O/E target genes is required for 3T3-L1 terminal differentiation. Thus, our data point to the importance of O/E target genes for adipocyte differentiation and suggest a novel role for O/E-1 as an initiator and stimulator of adipogenesis.
Publisher
American Society for Microbiology
Subject
Cell Biology,Molecular Biology
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