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Understanding tumor-induced angiogenesis is a challenging problem with important consequences for the diagnosis and treatment of cancer. In this study, we define a novel function for epithelial membrane protein-2 (EMP2) in the control of angiogenesis. EMP2 functions as an oncogene in endometrial cancer, and its expression has been linked to decreased survival. Using endometrial cancer xenografts, modulation of EMP2 expression resulted in profound changes to the tumor microvasculature. Under hypoxic conditions, upregulation of EMP2 promoted vascular endothelial growth factors (VEGF) expression through a HIF-1α-dependent pathway and resulted in successful capillary-like tube formation. In contrast, reduction of EMP2 correlated with reduced HIF-1α and VEGF expression with the net consequence of poorly vascularized tumors in vivo. We have previously shown that targeting of EMP2 using diabodies in endometrial cancer resulted in a reduction of tumor load, and since then we have constructed a fully human EMP2 IgG1. Treatment of endometrial cancer cells with EMP2-IgG1 reduced tumor load with a significant improvement in survival. These results support the role of EMP2 in the control of the tumor microenvironment and confirm the cytotoxic effects observed by EMP2 treatment in vivo.
L K Gordon, and
M Kiyohara, and
M Fu, and
J Braun, and
P Dhawan, and
A Chan, and
L Goodglick, and
M Wadehra
November 2009,
Molecular and cellular biochemistry,
L K Gordon, and
M Kiyohara, and
M Fu, and
J Braun, and
P Dhawan, and
A Chan, and
L Goodglick, and
M Wadehra
January 2014,
International journal of clinical and experimental pathology,
L K Gordon, and
M Kiyohara, and
M Fu, and
J Braun, and
P Dhawan, and
A Chan, and
L Goodglick, and
M Wadehra
November 2018,
European review for medical and pharmacological sciences,
L K Gordon, and
M Kiyohara, and
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M Wadehra
June 2012,
Angiogenesis,
L K Gordon, and
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July 2010,
Carcinogenesis,
L K Gordon, and
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June 2012,
Developmental dynamics : an official publication of the American Association of Anatomists,
L K Gordon, and
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M Wadehra
September 2016,
Oncogene,
L K Gordon, and
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M Wadehra
September 2011,
Angiogenesis,
L K Gordon, and
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May 2016,
International heart journal,
L K Gordon, and
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M Fu, and
J Braun, and
P Dhawan, and
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L Goodglick, and
M Wadehra
December 2021,
Cell biology international,
