4.5 Article

4-Hexylresorcinol inhibits transglutaminase-2 activity and has synergistic effects along with cisplatin in KB cells

Journal

ONCOLOGY REPORTS
Volume 25, Issue 6, Pages 1597-1602

Publisher

SPANDIDOS PUBL LTD
DOI: 10.3892/or.2011.1218

Keywords

4-Hexylresorcinol; squamous cell carcinoma; cisplatin; transglutaminase-2

Categories

Funding

  1. Ministry of Health & Welfare, Republic of Korea [A080293]
  2. Korea Health Promotion Institute [A080293] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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Resistance to chemotherapy is very important in the prognosis of tumors. Transglutaminase-2 (TG-2) mediated chemotherapy resistance has been widely reported. The objective of this study was to demonstrate the effect of 4-hexylresorcinol (4-HR) on TG-2 activity in nasopharyngeal squamous cell carcinoma cells (KB cells). Treatment with a mixture of 4-HR and cisplatin significantly decreased KB cell viability compared to treatment by cisplatin alone at 10 mu g/ml (p<0.001). 4-HR inhibited TG-2 activity compared to cisplatin alone at 5, 10 and 20 mu g/ml (p=0.001, 0.001 and 0.003, respectively). Nuclear translocation of TG-2 was also inhibited by 4-HR treatment. 4-HR treatment also increased the fluorescence life-time of DAPI significantly compared to the untreated control or the cisplatin treated group (p<0.001). In conclusion, 4-HR inhibited TG-2 activity and showed a synergistic effect on tumor cell growth inhibition with cisplatin.

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