Ambient vapor samples activate the Nrf2-ARE pathway in human bronchial epithelial BEAS-2B cells.
Ambient vapor samples activate the Nrf2-ARE pathway in human bronchial epithelial BEAS-2B cells.
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DOI:
10.1002/tox.21860
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发表时间:
2014-11
影响因子:
4.5
通讯作者:
Kumagai, Yoshito
中科院分区:
文献类型:
--
作者:
Shinkai, Yasuhiro;Nakajima, Syun;Eiguren-Fernandez, Arantza;Di Stefano, Emma;Schmitz, Debra A.;Froines, John R.;Cho, Arthur K.;Kumagai, Yoshito
Ambient air pollutants have been reported to induce oxidative stress based inflammatory responses in humans and experimental animals. However, most of these reports describe the actions of the particulate phase of ambient and exhaust samples. We describe here results of studies investigating the actions of the vapor phase of ambient air samples collected in the midtown area of Los Angeles on human bronchial epithelial BEAS-2B cells using DNA microarray analysis. Among 26 genes whose expression increased fourfold or more, four genes were associated with detoxifying genes regulated by the transcription factor Nrf2. Consistent with these results, the vapor samples activate the Nrf2-ARE pathway, resulting in up-regulation of heme oxygenase-1 (HO-1), glutamate cysteine ligase modifier subunit, and cystine transporter (xCT) mRNA and proteins. No appreciable increases in pro-inflammatory genes were observed. These results suggest that ambient vapor samples activate the Nrf2-ARE pathway but not an inflammatory response. Also, treatment of the vapor samples with glutathione resulted in reduction in the Nrf2 activation and HO-1 induction, suggesting that electrophiles in vapor samples contribute to this Nrf2-dependent antioxidant or adaptive response.
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影响因子:
8.3
作者:
Eiguren-Fernandez, Arantzazu;Shinyashiki, Masaru;Schmitz, Debra A.;DiStefano, Emma;Hinds, William;Kumagai, Yoshito;Cho, Arthur K.;Froines, John R.
通讯作者:
Froines, John R.
影响因子:
10.4
作者:
Delfino RJ;Staimer N;Tjoa T;Arhami M;Polidori A;Gillen DL;Kleinman MT;Schauer JJ;Sioutas C
通讯作者:
Sioutas C
影响因子:
10.5
作者:
Itoh, K;Wakabayashi, N;Yamamoto, M
通讯作者:
Yamamoto, M
影响因子:
3.8
作者:
Becker, Susanne;Mundandhara, Sailaja;Madden, Michael
通讯作者:
Madden, Michael
DOI:
10.1152/ajplung.00358.2002
发表时间:
2003-06-01
影响因子:
4.9
作者:
Takizawa, H;Abe, S;Kudoh, S
通讯作者:
Kudoh, S