TY - JOUR
T1 - Effect of heme oxygenase-1 on ochratoxin A-induced nephrotoxicity in mice
AU - Loboda, Agnieszka
AU - Stachurska, Anna
AU - Podkalicka, Paulina
AU - Sobczak, Mateusz
AU - Mucha, Olga
AU - Witalisz-Siepracka, Agnieszka
AU - Jozkowicz, Alicja
AU - Dulak, Jozef
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017/3/1
Y1 - 2017/3/1
N2 - Heme oxygenase-1 (HO-1), a heme-degrading enzyme, is suggested to play an important role in kidney pathophysiology, mostly due to its anti-fibrotic, anti-apoptotic and anti-oxidant properties. One of the mycotoxin, ochratoxin A (OTA) was previously shown to affect HO-1 expression, however, the mechanisms of OTA-induced nephrotoxicity during HO-1 deficiency are unknown. We have shown that OTA regulates the number of pro-fibrotic, pro-inflammatory, anti-oxidative and pro-apoptotic factors in HO-1 dependent manner, as the lack of HO-1 accelerates whereas the induction of HO-1 expression by cobalt protoporphyrin (CoPP) attenuates nephrotoxic effect of OTA. The down-regulation of the nuclear factor-erythroid-2- related factor 2 (Nrf2) transcription factor by OTA, observed in HO-1 knock-out animals, might be another mechanism of OTA toxicity. Moreover, HO-1 level and OTA treatment influences the expression of microRNAs. Namely, p53-regulated miR-34a and pro-fibrotic miR-21 were already increased in HO-1−/− kidneys and were further induced by OTA administration, whereas anti-fibrotic miR-29c was down-regulated by this mycotoxin. Our study indicates that complex mechanisms of OTA nephrotoxicity may be partially overcome by HO-1 induction.
AB - Heme oxygenase-1 (HO-1), a heme-degrading enzyme, is suggested to play an important role in kidney pathophysiology, mostly due to its anti-fibrotic, anti-apoptotic and anti-oxidant properties. One of the mycotoxin, ochratoxin A (OTA) was previously shown to affect HO-1 expression, however, the mechanisms of OTA-induced nephrotoxicity during HO-1 deficiency are unknown. We have shown that OTA regulates the number of pro-fibrotic, pro-inflammatory, anti-oxidative and pro-apoptotic factors in HO-1 dependent manner, as the lack of HO-1 accelerates whereas the induction of HO-1 expression by cobalt protoporphyrin (CoPP) attenuates nephrotoxic effect of OTA. The down-regulation of the nuclear factor-erythroid-2- related factor 2 (Nrf2) transcription factor by OTA, observed in HO-1 knock-out animals, might be another mechanism of OTA toxicity. Moreover, HO-1 level and OTA treatment influences the expression of microRNAs. Namely, p53-regulated miR-34a and pro-fibrotic miR-21 were already increased in HO-1−/− kidneys and were further induced by OTA administration, whereas anti-fibrotic miR-29c was down-regulated by this mycotoxin. Our study indicates that complex mechanisms of OTA nephrotoxicity may be partially overcome by HO-1 induction.
KW - Heme oxygenase-1
KW - Kidney
KW - microRNA
KW - Nephrotoxicity
KW - Ochratoxin A
UR - https://www.scopus.com/pages/publications/85009518301
U2 - 10.1016/j.biocel.2017.01.003
DO - 10.1016/j.biocel.2017.01.003
M3 - Journal article
C2 - 28089712
AN - SCOPUS:85009518301
SN - 1357-2725
VL - 84
SP - 46
EP - 57
JO - International Journal of Biochemistry and Cell Biology
JF - International Journal of Biochemistry and Cell Biology
ER -