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A novel epigenetic modulating agent sensitizes pancreatic cells to a chemotherapy agent.


ABSTRACT: Pancreatic ductal adenocarcinoma (PDAC) is expected to be the second leading cause of cancer mortality by 2030. PDAC remains resistant to the majority of systemic chemotherapies. In this paper, we explore if epigenetic sensitization can improve chemotherapy response in PDAC. Multiple PDAC cell lines were tested with serial concentrations of the epigenetic modulators 5-azacitidine (Aza) and guadecitabine (SGI-110). Guadecitabine was effective at inhibiting the expression of DNA Methyltransferase 1 (DNMT1) and in decreasing cell viability at nanomolar concentrations. We also report that guadecitabine has increased efficacy following a delay period or as we reference, a 'rest period'. Sensitization with guadecitabine improved response to the chemotherapeutic agent-Irinotecan- as measured by decreased cell viability and accompanied by an increase in caspase activity. Additional studies are needed to understand the mechanism of action.

SUBMITTER: Thakar M 

PROVIDER: S-EPMC6013229 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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A novel epigenetic modulating agent sensitizes pancreatic cells to a chemotherapy agent.

Thakar Manjusha M   Hu Yue Y   Morreale Michael M   Lerner Lane L   Ying Lin Wan W   Sen Rupashree R   Cai Yi Y   Karunasena Enusha E   Thakar Maya M   Saggi Soren S   Keer Harold H   Ahuja Nita N  

PloS one 20180621 6


Pancreatic ductal adenocarcinoma (PDAC) is expected to be the second leading cause of cancer mortality by 2030. PDAC remains resistant to the majority of systemic chemotherapies. In this paper, we explore if epigenetic sensitization can improve chemotherapy response in PDAC. Multiple PDAC cell lines were tested with serial concentrations of the epigenetic modulators 5-azacitidine (Aza) and guadecitabine (SGI-110). Guadecitabine was effective at inhibiting the expression of DNA Methyltransferase  ...[more]

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