Abstract:
:Elevated levels of TGFβ are a negative prognostic indicator for patients diagnosed with pancreatic cancer; as a result, the TGFβ pathway is an attractive target for therapy. However, clinical application of pharmacologic inhibition of TGFβ remains challenging because TGFβ has tumor suppressor functions in many epithelial malignancies, including pancreatic cancer. In fact, direct neutralization of TGFβ promotes tumor progression of genetic murine models of pancreatic cancer. Here, we report that neutralizing the activity of murine TGFβ receptor 2 using a monoclonal antibody (2G8) has potent antimetastatic activity in orthotopic human tumor xenografts, syngeneic tumors, and a genetic model of pancreatic cancer. 2G8 reduced activated fibroblasts, collagen deposition, microvessel density, and vascular function. These stromal-specific changes resulted in tumor cell epithelial differentiation and a potent reduction in metastases. We conclude that TGFβ signaling within stromal cells participates directly in tumor cell phenotype and pancreatic cancer progression. Thus, strategies that inhibit TGFβ-dependent effector functions of stromal cells could be efficacious for the therapy of pancreatic tumors. Cancer Res; 74(18); 4996-5007. ©2014 AACR.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Ostapoff KT,Cenik BK,Wang M,Ye R,Xu X,Nugent D,Hagopian MM,Topalovski M,Rivera LB,Carroll KD,Brekken RAdoi
10.1158/0008-5472.CAN-13-1807subject
Has Abstractpub_date
2014-09-15 00:00:00pages
4996-5007issue
18eissn
0008-5472issn
1538-7445pii
0008-5472.CAN-13-1807journal_volume
74pub_type
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