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Original scientific paper

https://doi.org/10.2478/10004-1254-64-2013-2251

Uloga deplecije glutationa u aktivaciji Nrf2/ARE deltametrinom u štakorskim PC12-stanicama feokromocitoma

Huangyuan Li ; Department of Occupational and Environmental Health, Fujian Province Key lab of Environment and Health, Institution of Environment and Health, Major Subject of Environment and Health of Fujian Key Universities, School of Public Health, Fujian Medical Univ
Siying Wu ; Department of Epidemiology and Health Statistics, Major Subject of Environment and Health of Fujian Key Universities, School of Public Health, Fujian Medical University, China
Junnian Chen ; Department of Occupational and Environmental Health, Fujian Province Key lab of Environment and Health, Institution of Environment and Health, Major Subject of Environment and Health of Fujian Key Universities, School of Public Health, Fujian Medical Univ
Bo Wang ; Department of Occupational and Environmental Health, Fujian Province Key lab of Environment and Health, Institution of Environment and Health, Major Subject of Environment and Health of Fujian Key Universities, School of Public Health, Fujian Medical Univ
Nian Shi ; Department of Health Toxicology, MOE Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China


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Abstract

Transkripcijski čimbenik 2 povezan s NF-E2 (Nrf2) važan je za zaštitu stanice od oksidacijskog stresa uzrokovanog kemijskim spojevima. U prijašnjem smo istraživanju utvrdili da često rabljeni piretroidni insekticid deltametrin aktivira Nrf2 u štakorskim PC12-stanicama feokromocitoma. Još međutim nisu jasni molekularni mehanizmi te aktivacije. U ovome smo istraživanju željeli utvrditi ulogu deplecije staničnoga glutationa (GSH) u aktivaciji Nrf2 od strane DM-a. DM je pojačao ekspresiju Nrf2 u mRNA te povisio razinu proteina i razinu Nrf2 u jezgri. Aktivacija Nrf2 bila je povezana s nizvodnom aktivacijom hemoksigenaze 1 (HO-1) i katalitičke podjedinice glutamat cistein ligaze (GCLC). DL-butionin-[S,R]-sulfoksimin (BSO), za koji se zna da dovodi do deplecije GSH, nije međutim povećao ekspresiju Nrf2-proteina niti doveo do njegova nakupljanja u staničnoj jezgri. Prethodna primjena BSO aktivirala je međutim ekspresiju HO-1 i GCLC u mRNA. Usto je suprimirala djelovanje DM-a na aktivaciju i regulaciju Nrf2 te smanjila ekspresiju HO-1 i GCLC u mRNA nakon primjene DM-a. Ova saznanja govore da deplecija GSH nije nuždan mehanizam za aktivaciju Nrf2/ARE od strane DM-a u PC12-stanica te da do povećane ekspresije GCLC i HO-1 može doći drugim signalnim putovima.

Keywords

BSO; DL-butionin-[S,R]-sulfoksimin; katalitička podjedinica glutamat cistein ligaze; GCLC; hem-oksigenaza; HO-1; piretroidni insekticid

Hrčak ID:

98687

URI

https://hrcak.srce.hr/98687

Publication date:

20.3.2013.

Article data in other languages: english

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