Cisplatin induces drug resistance in human esophageal squamous carcinoma cell line EC109 by decreasing CTR1 protein expression / 南方医科大学学报
Journal of Southern Medical University
;
(12): 801-804, 2011.
Article
Dans Chinois
| WPRIM
| ID: wpr-332547
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the mechanism of the development of cisplatin resistance in a human esophageal squamous carcinoma cell line.</p><p><b>METHODS</b>The cytotoxicity of cisplatin in the cisplatin-resistant resistant cell line EC109/CDDP and its parental cell line EC109 was measured by MTT assay. Whole-cell cisplatin accumulation and Pt-DNA adduct formation were determined by inductively coupled plasma mass spectrometry (ICP-MS). Western blotting was used to investigate the protein expression of full length PARP, cleaved PARP, and copper transporter 1 (CTR1).</p><p><b>RESULTS</b>EC109/CDDP cells was more resistant to cisplatin-induced cytotoxicity and apoptosis than EC109 cells. Compared with EC109 cells, EC109/CDDP cells exhibited less cisplatin accumulation and Pt-DNA adduct formation with also decreased CTR1 protein expression.</p><p><b>CONCLUSION</b>Cisplatin induces drug resistant phenotype by decreasing the protein level of CTR1, which controls cell accumulation and cytotoxic effect of cisplatin.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Pharmacologie
/
Tumeurs de l'oesophage
/
Carcinome épidermoïde
/
Régulation négative
/
Cisplatine
/
Résistance aux médicaments antinéoplasiques
/
Transporteurs de cations
/
Lignée cellulaire tumorale
/
Métabolisme
Limites du sujet:
Humains
langue:
Chinois
Texte intégral:
Journal of Southern Medical University
Année:
2011
Type:
Article
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