Title : Simultaneous exposure of Xenopus A6 kidney epithelial cells to concurrent mild sodium arsenite and heat stress results in enhanced hsp30 and hsp70 gene expression and the acquisition of thermotolerance.

Pub. Date : 2009 Aug

PMID : 19358893






5 Functional Relationships(s)
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1 Simultaneous exposure of Xenopus A6 kidney epithelial cells to concurrent mild sodium arsenite and heat stress results in enhanced hsp30 and hsp70 gene expression and the acquisition of thermotolerance. sodium arsenite heat shock 70kDa protein L homeolog Xenopus laevis
2 In this study, we examined the effect of concurrent low concentrations of sodium arsenite and mild heat shock temperatures on hsp30 and hsp70 gene expression in Xenopus A6 kidney epithelial cells. sodium arsenite heat shock 70kDa protein L homeolog Xenopus laevis
3 RNA blot hybridization and immunoblot analysis revealed that exposure of A6 cells to 1-10 microM sodium arsenite at a mild heat shock temperature of 30 degrees C enhanced hsp30 and hsp70 gene expression to a much greater extent than found with either stress individually. sodium arsenite heat shock 70kDa protein L homeolog Xenopus laevis
4 In cells treated simultaneously with 10 microM sodium arsenite and different heat shock temperatures, enhanced accumulation of HSP30 and HSP70 protein was first detected at 26 degrees C with larger responses at 28 and 30 degrees C. HSF1 activity was involved in combined stress-induced hsp gene expression since the HSF1 activation inhibitor, KNK437, inhibited HSP30 and HSP70 accumulation. sodium arsenite heat shock 70kDa protein L homeolog Xenopus laevis
5 In cells treated simultaneously with 10 microM sodium arsenite and different heat shock temperatures, enhanced accumulation of HSP30 and HSP70 protein was first detected at 26 degrees C with larger responses at 28 and 30 degrees C. HSF1 activity was involved in combined stress-induced hsp gene expression since the HSF1 activation inhibitor, KNK437, inhibited HSP30 and HSP70 accumulation. sodium arsenite heat shock 70kDa protein L homeolog Xenopus laevis