STIMULATION OF PROLIFERATION BY 3,3',5-TRIIODO-L-THYRONINE IN POORLY DIFFERENTIATED HUMAN HEPATOCARCINOMA CELLS OVEREXPRESSING BETA-1 THYROID-HORMONE RECEPTOR

被引:27
|
作者
LIN, KH [1 ]
LIN, YW [1 ]
PARKISON, C [1 ]
CHENG, SY [1 ]
机构
[1] NCI,DCBDC,MOLEC BIOL LAB,BETHESDA,MD 20892
关键词
THYROID HORMONE; T-3; RECEPTOR; CARCINOGENESIS; HEPATOCARCINOMA; GROWTH AND DIFFERENTIATION;
D O I
10.1016/0304-3835(94)90274-7
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
To understand the role of thyroid hormone nuclear receptors (TRs) in hepatocarcinogenesis, we characterized the TRs in nine human hepatocarcinoma cell lines. The expression of TR proteins is receptor subtype- and cell type dependent. TR alpha 1 protein expresses similarly at a low level in each of the nine cell lines. In contrast, TR beta 1 is overexpressed in hepatocarcinoma cells which are poorly differentiated. Furthermore, thyroid hormone was found to stimulate the proliferation of cells in which TR beta 1 is overexpressed. These results suggest that TR beta 1 is most likely involved in the differentiation and proliferation of hepatocarcinoma cells. Our studies have shed new light in the understanding of the role of TRs in liver carcinogenesis.
引用
收藏
页码:189 / 194
页数:6
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