Optimal effects of liposome on antisense oligodeoxynucleotides uptake by mouse breast cancer TM40D cells and the effects of antisense oligodeoxynucleotides targeting c-erbB-2 on cell proliferation and apoptosis / 中华外科杂志
Chinese Journal of Surgery
;
(12): 802-805, 2004.
Article
in Chinese
| WPRIM
| ID: wpr-360930
ABSTRACT
<p><b>OBJECTIVE</b>To study the optimal effects of liposome on antisense oligodeoxynucleotides targeting c-erbB-2 uptake by mouse breast cancer TM40D cells and effects of AS-ODNs on cell proliferation and apoptosis.</p><p><b>METHODS</b>Flow cytometric analysis and fluorescence microscope were used to study the transfection ratio of AS-ODNs in mouse breast cancer TM40D cells with/without liposome in 1, 2, 4, 6 hour and the distribution of AS-ODNs in cells. the effects of ODNs on cell proliferation and activation of apoptosis were examined by MTT assay and flow cytometry.</p><p><b>RESULTS</b>Liposome could promote AS-ODNs uptake by mouse breast cancer TM40D cells, flow cytometric analysis revealed that the time of the optimal effects was 4 hours and the percentage of FAM-positive cells reached 72.23%; the ratio maintained at a relatively high level at 6 h. Also liposome facilitated the entrance of AS-ODNs into nucleus. AS-ODNs restrained the proliferation of mouse breast cancer TM40D cells, and restraint rate was 50.24%. Meanwhile AS-ODNs promoted cell apoptosis. Flow cytometry analysis revealed that antisense ODNs increased cell apoptosis by 38.50%, compared with cultured cells group 9.13% and liposome group 9.29%.</p><p><b>CONCLUSIONS</b>Liposome could facilitate AS-ODNs to enter cells and their nucleus. AS-ODNs of C-erbB-2 restrained the proliferation of mouse breast cancer TM40D cells and promoted apoptosis.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pathology
/
Pharmacology
/
Breast Neoplasms
/
Transfection
/
Oligonucleotides, Antisense
/
Apoptosis
/
Genes, erbB-2
/
Cell Line, Tumor
/
Cell Proliferation
/
Flow Cytometry
Limits:
Animals
Language:
Chinese
Journal:
Chinese Journal of Surgery
Year:
2004
Type:
Article
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