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ACS Applied Bio Materials

ACS Applied Bio Materials

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AG-1024 Sensitizes Sorafenib-Resistant Hepatocellular Carcinoma Cells to Sorafenib via Enhancing G1/S Arrest

Published:15 February 2021 DOI: 10.2147/OTT.S289324 PMID: 33623392
Wei Zhou,?Weiyang Lou,?Junru Chen,?Bisha Ding,?Binjie Chen,?Haiyang Xie,?Lin Zhou,?Shusen Zheng,?Donghai Jiang

Abstract

Purpose: The frequency in resistance to sorafenib accounts for the grim prognosis of advanced hepatocellular carcinoma (HCC). In the present study, we explore the anti-cancer efficacy of co-administration of sub-toxic AG-1024 with sorafenib in HCC cells to enhance the sensitivity of these cells to sorafenib.

Materials and methods: Two acquired sorafenib-resistant HCC cells, SNU-sora-5 and SK-sora-5, were established and verified. The MTT assay, colony formation assay, cell morphology detection and flow cytometric analysis were then used to determine the anti-tumor effects of the co-administration of sub-toxic AG-1024 and sorafenib. Finally, the potential molecular mechanism was preliminarily examined.

Results: Compared to parental cell lines, the acquired sorafenib-resistant cell lines, SNU-sora-5 and SK-sora-5, were more resistant to sorafenib. Sub-toxic AG-1024 markedly enhanced sorafenib-mediated cell inhibition in acquired sorafenib-resistant HCC strains, with a reversal index (RI) of 4.64 in SNU-sora-5 and 4.58 in SK-sora-5 cell lines. Moreover, co-administration of sub-toxic AG-1024 and sorafenib exerted dramatic cytotoxicity compared with sorafenib alone in the intrinsic sorafenib-resistant HCC-LM3 cells. In contrast to high-dose sorafenib, sub-toxic AG-1024 combined with sorafenib had less impact on apoptosis while significantly enhancing G1/S arrest via activation of the mTOR/p21 signaling pathway. The more, pharmacological inhibition of mTOR activity by inhibitor Palomid 529 significantly antagonized the synergistic anti-cancer effects of AG-1024 and sorafenib in HCC cells.

Conclusion: The current findings indicate that sub-toxic AG-1024 may be a promising therapeutic agent in enhancing the sensitivity in HCC cells to sorafenib, bringing hope to HCC patients refractory to sorafenib treatment.

Substances (4)

Materials
Procduct Name CAS Molecular Formula Supplier Price
PaloMid 529 (P529) 914913-88-5 C24H22O6 144 suppliers $27.00-$2839.00
PaloMid 529 (P529) 914913-88-5 C24H22O6 144 suppliers $27.00-$2839.00
PaloMid 529 (P529) 914913-88-5 C24H22O6 144 suppliers $27.00-$2839.00
PaloMid 529 (P529) 914913-88-5 C24H22O6 144 suppliers $27.00-$2839.00

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