title: [Low dose benzo(a)pyrene up-regulated the transcription of HSP70 and HSP90 in Eisenia fetida].
abstract: To search for the molecular biomarkers of sub-lethal polycyclic aromatic hydrocarbons (PAHs)-contamination of soil, the subtractive cDNA libraries of earthworm Eisenia fetida exposed to benzo(a)pyrene (BaP) in artificial soil were constructed by suppression subtractive hybridization. After sequencing and analyzing with basic local alignment search tool (BLAST), two clones matching heat shock protein 70 k Da (HSP70) and one clone matching heat shock protein 90 k Da (HSP90) were isolated from the up-regulated library, and subsequently, the up-regulation of HSP70 and HSP90 was verified by real-time PCR in E. fetida exposed to 0.1 mg x kg(-1) and 1.0 mg x kg(-1) BaP. It was indicated that these two newly identified HSPs in E. fetida were the potential molecular biomarkers for soil contamination monitoring.
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. zhengsl@yahoo.com.cn
authors.forename: Sen-Lin
authors.initials: SL
authors.lastname: Zheng
authors.forename: Tie-Heng
authors.initials: TH
authors.lastname: Sun
authors.forename: Hong
authors.initials: H
authors.lastname: Xiao
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Qiu
authors.forename: Yu-Fang
authors.initials: YF
authors.lastname: Song
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001564:Benzo(a)pyrene / Q000633:toxicity*; D004784:Environmental Monitoring / Q000379:methods; D018840:HSP70 Heat-Shock Proteins / Q000235:genetics* / Q000378:metabolism; D018841:HSP90 Heat-Shock Proteins / Q000235:genetics* / Q000378:metabolism; D008969:Molecular Sequence Data; D009835:Oligochaeta / Q000187:drug effects* / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D017386:Sequence Homology, Amino Acid; D012989:Soil Pollutants / Q000633:toxicity; D014158:Transcription, Genetic / Q000187:drug effects*; D015854:Up-Regulation / Q000187:drug effects
chemical_list: D018840:HSP70 Heat-Shock Proteins; D018841:HSP90 Heat-Shock Proteins; D012333:RNA, Messenger; D012989:Soil Pollutants; D001564:Benzo(a)pyrene