## Abstract Recent studies demonstrate that PI3K activation and PTEN mutation are frequently found in many human cancer cells and tissues. However, the mechanism of PI3K signaling in human cancer tumorigenesis remains to be elucidated. In this study we specifically downregulated p110Ξ± expression in
Regulation of VEGF/VPF expression in tumor cells: Consequences for tumor growth and metastasis
β Scribed by Kevin P. Claffey; Gregory S. Robinson
- Publisher
- Springer
- Year
- 1996
- Tongue
- English
- Weight
- 843 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0167-7659
No coin nor oath required. For personal study only.
β¦ Synopsis
Vascular endothelial growth factor (VEGF), also known as vascular permeability factor (VPF) is a multifunctional cytokine which potently stimulates angiogenesis in vivo. VEGF/VPF expression is elevated in pathological conditions including cancer, proliferative retinopathy, psoriasis and rheumatoid arthritis. The angiogenesis associated with human tumors is likely a central component in promoting tumor growth and metastatic potential. The regulation of VEGF/VPF expression during tumor progression may involve diverse mechanisms including activated oncogenes, mutant or deleted tumor suppressor genes, cytokine activation, hormonal modulators, and a particularly effective activator, hypoxia. Understanding the diverse mechanisms by which tumor cells overexpress VEGF/VPF, and which mechanisms are operating in specific tumor types is important for the design of effective anti-cancer therapies.
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