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- W1968517811 abstract "Pancreatic cancer is the most lethal abdominal malignancy. Expression of the RIalpha subunit of protein kinase A (PKA) has been associated with neoplastic transformation and mitogenic signaling. The effect of PKA inhibition on pancreatic cancer cell growth and apoptosis is unknown. In pancreatic cancer cells, we sought to determine (1) whether inhibition of PKA can inhibit growth or induce apoptosis, and (2) whether growth can be inhibited by silencing of RIalpha expression.Human pancreatic cancer cells (PANC-1, MIA PaCa-2, and SUIT-2) were treated with inhibitors of PKA (H89 or PKI) and cell growth, kinase activity, and induction of apoptosis measured. Small inhibitory RNA (siRNA) directed against the RIalpha subunit was synthesized and transfected into PANC-1 cells.H89 decreased PKA activity and inhibited pancreatic cancer cell growth. Apoptosis was also induced by H89 in PANC-1 and MIA PaCa-2 cells. PANC-1 cells express high levels of the RIalpha subunit; transfection of siRNA decreased RIalpha protein expression and inhibited growth.Inhibition of PKA in pancreatic cancer cells induces growth arrest and apoptosis; similar effects are noted in cells with siRNA used to block RIalpha expression. Inhibition of PKA may represent a novel therapeutic strategy for the adjuvant treatment of pancreatic cancer." @default.
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- W1968517811 date "2003-08-01" @default.
- W1968517811 modified "2023-10-18" @default.
- W1968517811 title "Inhibition of pancreatic cancer cell growth and induction of apoptosis with novel therapies directed against protein kinase A" @default.
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- W1968517811 doi "https://doi.org/10.1067/msy.2003.220" @default.
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