Abstract:
:The mammalian target of rapamycin (mTOR), which exists in two functionally distinct complexes, mTORC1 and mTORC2 plays an important role in tumor growth. Whereas the role of mTORC1 has been well characterized in this process, little is known about the functions of mTORC2 in cancer progression. In this study, we explored the specific role of mTORC2 in colon cancer using a short hairpin RNA expression system to silence the mTORC2-associated protein rictor. We found that downregulation of rictor in HT29 and LS174T colon cancer cells significantly reduced cell proliferation. Knockdown of rictor also resulted in a G1 arrest as observed by cell cycle analysis. We further observed that LS174T cells deficient for rictor failed to form tumors in a nude mice xenograft model. Taken together, these results show that the inhibition of mTORC2 reduces colon cancer cell proliferation in vitro and tumor xenograft formation in vivo. They also suggest that specifically targeting mTORC2 may provide a novel treatment strategy for colorectal cancer.
journal_name
Mol Cancerjournal_title
Molecular cancerauthors
Roulin D,Cerantola Y,Dormond-Meuwly A,Demartines N,Dormond Odoi
10.1186/1476-4598-9-57subject
Has Abstractpub_date
2010-03-12 00:00:00pages
57issn
1476-4598pii
1476-4598-9-57journal_volume
9pub_type
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