Abnormal expression of eukaryotic translation factors in malignant transformed human bronchial epithelial cells induced by crystalline nickel sulfide / 生物医学与环境科学(英文)
Biomedical and Environmental Sciences
;
(12): 53-60, 2006.
Article
in English
| WPRIM
| ID: wpr-229725
ABSTRACT
<p><b>OBJECTIVE</b>To study the oncogenic potential of mouse translation initiation factor 3 (TIF3) and elongation factor-1delta (TEF-1delta) in malignant transformed human bronchial epithelial cells induced by crystalline nickel sulfide (NiS).</p><p><b>METHODS</b>Abnormal expressions of human TIF3 and TEF-1delta genes in two kinds of NiS-transformed cells and NiS-tumorigenic cell lines were investigated and analyzed by the reverse transcript polymerase chain reaction (RT-PCR) and fluorescent quantitative polymerase chain reaction (FQ-PCR), respectively.</p><p><b>RESULTS</b>RT-PCR analysis primarily showed that both human TIF3 and TEF-1delta mRNA expressions in two kinds of NiS-transformed cells and NiS-tumorigenic cell lines were increased as compared with controls. FQ-PCR assay showed that the levels of TIF3 expressions in the transformed cells and tumorigenic cells were 3 and 4 times higher respectively, and the elevated expressions of TEF-1delta cDNA copies were 2.7- to 3.5-fold in transformed cells and 4.1- to 5.2-fold in tumorigenic cells when compared with non-transformed cells, indicating that the over-expressions of human TIF3 and TEF-1delta genes were related to malignant degree of the cells induced by nickel.</p><p><b>CONCLUSIONS</b>These findings demonstrate that there are markedly abnormal expressions of TIF3 and TEF-1delta genes during malignant transformation of human bronchial epithelial cell lines induced by crystalline NiS. They seem to be the molecular mechanisms potentially responsible for human carcinogensis due to nickel.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Bronchi
/
Cell Line, Transformed
/
Biomarkers
/
Gene Expression Regulation, Neoplastic
/
Cell Transformation, Neoplastic
/
DNA, Complementary
/
Peptide Elongation Factor 1
/
Cell Biology
/
Prokaryotic Initiation Factor-3
/
Cell Line, Tumor
Limits:
Humans
Language:
English
Journal:
Biomedical and Environmental Sciences
Year:
2006
Type:
Article
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