期刊
CLINICAL CANCER RESEARCH
卷 14, 期 8, 页码 2476-2483出版社
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/1078-0432.CCR-07-4529
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- NCI NIH HHS [CA092115] Funding Source: Medline
Purpose: Tissue transglutaminase (TG2) is a multifunctional protein that is implicated in development of drug resistance and metastasis. Therefore, we examined therapeutic targeting of TG2 for inhibiting growth and metastasis of in vivo growing pancreatic ductal adenocarcinoma (PDAC) in nude mice. Experimental Design: We implanted Panc-28 pancreatic cancer cells to induce orthotopic PDAC tumors in nude mice and determined the efficacy of liposomal TG 2 small interfering RNA (si RNA) either alone or in combination with gemcitabine. Results: We show that down-regulation of endogenous TG2 by siRNA could effectively block the growth of PDAC. Moreover, down-regulation of TG2 significantly enhanced the therapeutic efficacy of gemcitabine against PDAC and inhibited metastatic spread of the disease. The antitumor activity was related to inhibition of proliferation, angiogenesis, and Akt phosphorylation. Conclusion: siRNA-mediated down-regulation of TG2 represents a promising therapeutic approach for improved treatment of PDAC.
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