| First Author | Naldini A | Year | 2010 |
| Journal | J Leukoc Biol | Volume | 87 |
| Issue | 3 | Pages | 365-9 |
| PubMed ID | 19889727 | Mgi Jnum | J:158867 |
| Mgi Id | MGI:4440732 | Doi | 10.1189/jlb.0709460 |
| Citation | Naldini A, et al. (2010) The adaptor protein p66Shc is a positive regulator in the angiogenic response induced by hypoxic T cells. J Leukoc Biol 87(3):365-9 |
| abstractText | Immune cells play an important role in the onset of angiogenesis. Here, we report that VEGF represents the major proangiogenic factor expressed by T cells exposed to hypoxia, a common feature of inflammation and tumor microenvironment. The supernatants of hypoxic T cells were highly angiogenic when delivered on the chick embryo CAM. The angiogenic response was abrogated by a neutralizing anti-VEGF antibody and mimicked by rVEGF. Interestingly, VEGF induction by hypoxia was up-regulated in Jurkat T cells overexpressing the adaptor protein p66Shc but not the inactive S36 p66Shc mutant, and it was abolished in p66Shc-/- mouse splenocytes. Accordingly, the angiogenic response induced by the supernatants from hypoxic p66Shc-/- splenocytes was reduced dramatically when compared with the wild-type controls. In conclusion, hypoxic T cells may contribute to the onset of angiogenesis through a novel VEGF-mediated mechanism, where p66Shc acts as a positive regulator. |
