Inhibitory effect of silencing of HMGB1 gene expression on the invasive and metastatic abilities of MGC-803 gastric cancer cells / 中华肿瘤杂志
Chinese Journal of Oncology
;
(12): 244-248, 2013.
Article
Dans Chinois
| WPRIM
| ID: wpr-284198
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of high mobility group box-1 (high mobility group box B 1, HMGB1) on the invasive and metastatic abilities of gastric cancer cell line MGC-803 and analyze the possible mechanisms.</p><p><b>METHODS</b>HMGB1 gene targeting siRNA was designed and synthesized, and HMGB1 siRNA oligonucleotides were transfected into the MGC-803 cells with Lipofectamine 2000. The invasive and migratory abilities were detected by transwell assay and scratch assay. The Matrigel matrix glue adhesive ability of MGC-803 cells was evaluated by MTT assay. NF-κB activity was detected by electrophoretic mobility shift assay. The mRNA and protein levels of HMGB1 and MMP-9 were determined by RT-PCR and Western blot, respectively.</p><p><b>RESULTS</b>The siRNA down-regulated the levels of HMGB1 mRNA and protein. Compared with that of the control group, the number of invasive (142.7 ± 3.4 /view vs. 303.5 ± 4.3/view) and migratory (293.7 ± 4.4/view vs. 445.5 ± 5.6/view) cells was significantly increased (P < 0.05) and the adhesive ability of MGC-803 cells to Matrigel was significantly elevated (33.4 ± 0.03% vs. 57.4 ± 4.2%, P < 0.05). In addition, silencing of HMGB1 gene significantly inhibited the activity of NF-κB and the relative expression folds of mRNA (0.2 ± 0.1 vs. 1.4 ± 0.4, P < 0.05)and protein (0.4 ± 0.1 vs. 2.3 ± 0.7, P < 0.05) of MMP-9.</p><p><b>CONCLUSION</b>Silencing of HMGB1 can effectively inhibit the invasion and migration of gastric cancer cells and this effect of HMGB1 may be partly due to its regulation of NF-κB and MMP-9 expressions.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Anatomopathologie
/
Tumeurs de l'estomac
/
ARN messager
/
Transfection
/
Régulation négative
/
Régulation de l'expression des gènes tumoraux
/
Adhérence cellulaire
/
Mouvement cellulaire
/
Facteur de transcription NF-kappa B
/
Matrix metalloproteinase 9
Limites du sujet:
Humains
langue:
Chinois
Texte intégral:
Chinese Journal of Oncology
Année:
2013
Type:
Article
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