Abstract:
:The liver enriched transcription factors HNF-3 and HNF-4 are known to play major roles in development and differentiation of hepatocytes. STAT-3 and STAT-5 are signaling peptides activated by a variety of cytokines and growth factors including HGF and EGF. Their role in hepatocyte growth and differentiation is yet to be determined. We examined protein expression and DNA binding activities of these transcription factors in a hepatocyte culture system in which the hepatocytes first de-differentiate and proliferate. Overlaying proliferating hepatocytes with EHS-matrix led to an increase in HNF-4 protein and DNA-binding activity. STAT-5 DNA binding activity was only slightly effected by EHS-matrix. HNF-3 and STAT-3 DNA-binding activities were reduced in the presence of EHS-matrix. This is consistent with the role of HNF-3 as the major initiating transcription factor involved in embryonic liver development and suggests, that STAT-3 might also play a role in growth and differentiation of hepatocytes.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Runge D,Runge DM,Drenning SD,Bowen WC Jr,Grandis JR,Michalopoulos GKdoi
10.1006/bbrc.1998.9384subject
Has Abstractpub_date
1998-09-29 00:00:00pages
762-8issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(98)99384-6journal_volume
250pub_type
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