Ligands for peroxisome proliferator-activated receptor gamma inhibit growth and induce apoptosis of human papillary thyroid carcinoma cells

The Journal of Clinical Endocrinology and Metabolism
K OhtaT Onaya

Abstract

Ligands for peroxisome proliferator-activated receptor gamma (PPARgamma) induce apoptosis and exert antiproliferative effects on several carcinoma cell lines. The present study investigates the expression of PPARgamma and the possibility that agonists for PPARgamma also inhibit the growth of human thyroid carcinoma cells. We examined this hypothesis using six cell lines, designated BHP thyroid carcinoma cells, which originated from patients with papillary thyroid carcinoma. RT-PCR analysis revealed that the thyroid carcinoma cell lines BHP2-7, 7-13, 10-3, and 18-21 express PPARgamma. More PPARgamma was expressed in carcinoma than in adjacent normal thyroid tissue in three of six samples of human papillary carcinoma of the thyroid. PPARgamma-positive thyroid carcinoma cells were treated with agonists of PPARgamma, troglitazone, BRL 49653, and 15-deoxy-12,14-prostaglandin J2. Troglitazone (10 micromol/L), BRL 49653 (10 micromol/L), and 15-deoxy-12,14-prostaglandin J2 (1 microg/mL) decreased [(3)H]thymidine incorporation and reduced cell number, respectively, in BHP carcinoma cell lines that expressed PPARgamma. Under low serum conditions, ligands for PPARgamma induced condensation of the nucleus and fragmentation of chromatin int...Continue Reading

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Citations

Jun 28, 2008·PPAR Research·Keisuke TachibanaTakefumi Doi
Sep 12, 2008·PPAR Research·Y Lynn Wang, Qi Miao
Jul 11, 2008·PPAR Research·Heath A Elrod, Shi-Yong Sun
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