Tumor cell differentiation by butyrate and environmental stress - PubMed

Tumor cell differentiation by butyrate and environmental stress

O Witt et al. Cancer Lett. 2001.

Abstract

The present study shows that stress signaling plays a role in differentiation of K562, PANC1, HT29 and HL60 tumor cells: (1) Butyrate induced differentiation in K562, PANC1, and HT29 cells can be inhibited by SB203580, a specific inhibitor of p38 stress activated protein kinase. (2) Heat shock and hyperosmolarity increase expression of differentiation markers in K562, HT29, HL60 and in K562, PANC1, and HT29 cells, respectively. (3) Conversely, environmental stress induced differentiation in K562, HT29, and PANC1 cells can be inhibited by SB203580 and quercetin, a compound with heat shock pathway inhibiting activity. (4) Butyrate and environmental stress enhance either additively or synergistically differentiation of K562, HT29, PANC1 or HL60 cells, respectively. Stress signaling pathways might be an interesting pharmacologic target for differentiation therapy of malignant disease.

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