• Cancer letters · Dec 2011

    Overexpression of human papillomavirus (HPV) type 16 oncoproteins promotes angiogenesis via enhancing HIF-1α and VEGF expression in non-small cell lung cancer cells.

    • Gang Li, Li He, Erying Zhang, Jingli Shi, Qunzhou Zhang, Anh D Le, Keyuan Zhou, and Xudong Tang.
    • Institute of Biochemistry and Molecular Biology, Guangdong Medical College, Zhanjiang, Guangdong, People's Republic of China.
    • Cancer Lett. 2011 Dec 8; 311 (2): 160-70.

    AbstractHPV-16 infection may play an important role in the development of non-small cell lung cancer (NSCLC) among never-smokers. Due to the critical role of angiogenesis in NSCLC development, we describe here the effect of HPV-16 oncoproteins on angiogenesis in NSCLC and the underlying mechanisms. We found that overexpression of HPV-16 E6 and E7 oncoproteins in NSCLC cells significantly promoted angiogenesis both in vitro and in vivo, and correspondingly, an enhanced expression of HIF-1α and VEGF, important pro-angiogenic factors in tumor angiogenesis. Meanwhile, overexpression of HPV-16 oncoproteins also led to HIF-1α-dependent increases in the secretion of several other pro-angiogenic factors, including IL-8. Our findings suggest that HPV-16 oncoproteins contribute to the development of NSCLC possibly by promoting HIF-1α/VEGF-mediated tumor angiogenesis.Copyright © 2011 Elsevier Ireland Ltd. All rights reserved.

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