Troglitazone Enhances the Apoptotic Response of DLD-1 Colon Cancer Cells to Photodynamic Therapy.

Abstract:

PURPOSE:The aim of this study was to investigate whether the peroxisomal proliferator-activated receptor gamma (PPARγ) ligand troglitazone in combination with photodynamic therapy (PDT) enhances the apoptotic response of DLD-1 colon cancer cells. MATERIALS AND METHODS:The effects of troglitazone, PDT, and troglitazone in combination with PDT on cell viability and apoptosis were assessed in DLD-1 cells. Cell viability and proliferation were evaluated using the tetrazolium-based MTT assay, and apoptosis was evaluated via cell staining with propidium iodide (PI) and annexin V-FITC. The levels of pro-caspase-3 were measured via Western blot analyses. RESULTS:Treatment of troglitazone and PDT induced the growth retardation and cell death of DLD-1 cells in a dose-dependent manner, respectively. The combination treatment significantly suppressed cell growth and increased the apoptotic response of DLD-1 and resulted in apoptosis rather than necrosis, as shown by PI/annexin V staining and degradation of procaspase-3. CONCLUSION: CONCLUSION:These results document the anti-proliferative and apoptotic activities of PDT in combination with the PPARγ ligand troglitazone and provide a strong rationale for testing the therapeutic potential of combination treatment in colon cancer.

journal_name

Yonsei Med J

journal_title

Yonsei medical journal

authors

Park H,Ko SH,Lee JM,Park JH,Choi YH

doi

10.3349/ymj.2016.57.6.1494

subject

Has Abstract

pub_date

2016-11-01 00:00:00

pages

1494-9

issue

6

eissn

0513-5796

issn

1976-2437

pii

57.1494

journal_volume

57

pub_type

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