title: Involvement of the activation of Nrf2/HO-1, p38 MAPK signaling pathways and endoplasmic reticulum stress in furazolidone induced cytotoxicity and S phase arrest in human hepatocyte L02 cells: modulation of curcumin.
abstract: Furazolidone (FZD) is extensively used as the antiprotozoal and antibacterial drug in clinic. The previous study has shown that curcumin pretreatment could improve FZD induced cytotoxicity by inhibiting oxidative stress and mitochondrial apoptotic pathway. The current study aimed to investigate the potential roles of endoplasmic reticulum (ER) stress, p38 mitogen-activated protein kinases (p38 MAPK) signaling pathway in curcumin against FZD cytotoxicity by using human hepatocyte L02 cells. The results showed that curcumin could markedly attenuate FZD induced cytotoxicity. Compared with FZD alone group, curcumin pretreatment significantly reduced the expression of phospho (p)-p38, cyclin D1, p-checkpoint kinase 1 (ChK1) and breast cancer associated gene 1 (BRCA1) protein, followed to attenuate S phase arrest. Meanwhile, curcumin pretreatment prevented FZD induced ER stress, evidenced by the inhibition of glucose-regulated protein 78 and DNA damage inducible gene 153/C/EBP-homologous protein (GADD153/CHOP) protein expression. Moreover, compared with the control, FZD exposure activated the protein and mRNA expression levels of nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase 1 (HO-1), which were further activated by curcumin treatment. These results reveal that curcumin could prevent FZD induced cytotoxicity and S phase arrest, which may involve the activation of Nrf2/HO-1 pathway and the inhibition of p38 MAPK pathway and ER stress.
authors.affiliation: a College of Veterinary Medicine , China Agricultural University , Beijing , PR China.
authors.forename: Chongshan
authors.initials: C
authors.lastname: Dai
authors.affiliation: a College of Veterinary Medicine , China Agricultural University , Beijing , PR China.
authors.forename: Lei
authors.initials: L
authors.lastname: Lei
authors.affiliation: a College of Veterinary Medicine , China Agricultural University , Beijing , PR China.
authors.forename: Bin
authors.initials: B
authors.lastname: Li
authors.affiliation: a College of Veterinary Medicine , China Agricultural University , Beijing , PR China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Lin
authors.affiliation: a College of Veterinary Medicine , China Agricultural University , Beijing , PR China.
authors.forename: Xilong
authors.initials: X
authors.lastname: Xiao
authors.affiliation: a College of Veterinary Medicine , China Agricultural University , Beijing , PR China.
authors.forename: Shusheng
authors.initials: S
authors.lastname: Tang
mesh_terms: D018929:Cell Culture Techniques; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D003474:Curcumin / Q000494:pharmacology*; D059865:Endoplasmic Reticulum Stress / Q000187:drug effects*; D005664:Furazolidone / Q000633:toxicity*; D051547:Heme Oxygenase-1 / Q000378:metabolism*; D022781:Hepatocytes / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology; D006801:Humans; D020935:MAP Kinase Signaling System / Q000187:drug effects*; D051267:NF-E2-Related Factor 2 / Q000378:metabolism*; D020011:Protective Agents / Q000494:pharmacology*; D059807:S Phase Cell Cycle Checkpoints / Q000187:drug effects*
chemical_list: D051267:NF-E2-Related Factor 2; C495635:NFE2L2 protein, human; D020011:Protective Agents; D005664:Furazolidone; C496541:HMOX1 protein, human; D051547:Heme Oxygenase-1; D003474:Curcumin
keywords: Curcumin; Nrf2/HO-1 pathway; S phase arrest; furazolidone; p38 MAPK pathway