NRP-1/shRNA silencing suppresses nasopharyngeal carcinoma cell growth in vitro and in vivo / 中华耳鼻咽喉头颈外科杂志
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
; (12): 312-317, 2015.
Article
in Zh
| WPRIM
| ID: wpr-247941
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of RNA interference (RNAi) targeting NRP-1 gene on the growth and proliferation of nasopharyngeal carcinoma (NPC) CNE-2Z cells.</p><p><b>METHODS</b>Short hairpin RNA (shRNA) plasmids targeting NRP-1 were designed and synthesized. These plasmids were respectively transfected into human NPC CNE-2Z cells and xenograft tumors in nude mice. The expressions of Fluorescein-labeled plasmids in NPC CNE-2Z cells and xenograft tumors were observed by fluorescence microscopy. Cell proliferation was detected by MTT assay. The inhibitory effects on target genes were evaluated with RT-PCR and Western blotting, respectively. The inhibitory effect of plasmids with the most effective sequence on xenograft tumors in nude mice was observed.</p><p><b>RESULTS</b>CNE-2Z cell proliferation was significantly inhibited by NRP-1/shRNA silencing. RT-PCR showed NRP-1 mRNA expression was significantly decreased. Western blotting demonstrated the NRP-1/shRNA silencing can effectively inhibit the expression of target proteins in CNE-2Z cells. After six weeks, there were significant differences in the mean tumor volumes in nude mice between plasmid group and negative control group [(0.599±0.002) vs (1.141±0.013) cm(3), P<0.05] or blank control group [(0.599±0.002) vs (1.165±0.308) cm(3), P<0.05], and the inhibitory rate of tumor growth was 48.6%.</p><p><b>CONCLUSION</b>RNA interference targeting NRP-1 can remarkably inhibit the growth of CNE-2Z cells in vitro and in vivo.</p>
Full text:
1
Index:
WPRIM
Main subject:
Pathology
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Plasmids
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Carcinoma
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Transfection
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Cell Cycle
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Nasopharyngeal Neoplasms
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Apoptosis
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Gene Targeting
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Neuropilin-1
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RNA, Small Interfering
Limits:
Animals
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Humans
Language:
Zh
Journal:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
Year:
2015
Type:
Article