Abstract |
Poly ADP-ribose polymerase (PARP) which is closely related to Poly ADP-ribose glycohydrolase (PARG) has already been thoroughly investigated in both experimental and clinical cancer trials compared to the latter. Nevertheless, in this experiment the importance of PARG expression was highlighted; whereby it is being silenced via lentivirus vector-mediated short hairpin RNA ( shRNA). MTT assay showed that there was an inhibition in human Lovo colon cancer cell growth and flow cytometry demonstrated an increase in the population of cells in G(0)/G(1) phase with a decrease in the S phase in transfected Lovo cells. Furthermore, our results suggested that the effect of silencing PARG leads to the inhibition of PARP expression; related to a decrease in the expression of Nuclear Factor Kappa-B (NFκ-B) with an increase in Akt(473) phosphorylation; suggesting that the Phosphoinositol 3-kinase (PI3K)/Akt/NFκ-B pathway is important for cellular growth and proliferation. Hence, this study emphasizes and converges on the relevance of silencing PARG which inhibits growth of human colonic cancer cells via PI3K/Akt/NFκ-B pathway; as colon carcinoma remains to be amongst one of the commonest cancers throughout the world with high morbidity and mortality rates.
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Authors | Nilufer Jasmine Selimah Fauzee, Qiaozhuan Li, Ya-Lan Wang, Juan Pan |
Journal | Pathology oncology research : POR
(Pathol Oncol Res)
Vol. 18
Issue 2
Pg. 191-9
(Apr 2012)
ISSN: 1532-2807 [Electronic] Switzerland |
PMID | 21713600
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- ARHGAP29 protein, human
- Elafin
- GTPase-Activating Proteins
- NF-kappa B
- PI3 protein, human
- RNA, Messenger
- Proto-Oncogene Proteins c-akt
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Topics |
- Apoptosis
- Blotting, Western
- Cell Cycle
- Cell Nucleus
(metabolism)
- Cell Proliferation
- Colonic Neoplasms
(genetics, metabolism, pathology)
- Elafin
(genetics, metabolism)
- Flow Cytometry
- GTPase-Activating Proteins
(antagonists & inhibitors, genetics, metabolism)
- Humans
- NF-kappa B
(genetics, metabolism)
- Phosphorylation
- Proto-Oncogene Proteins c-akt
(genetics, metabolism)
- RNA, Messenger
(genetics)
- Real-Time Polymerase Chain Reaction
- Tumor Cells, Cultured
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