| Literature DB >> 25070887 |
Liangwei Li1, Yinwei Zhang1, Jingjuan Qiao2, Jenny J Yang2, Zhi-Ren Liu3.
Abstract
It is long known that pyruvate kinase isoform M2 (PKM2) is released into the circulation of cancer patients. The PKM2 levels in patients have been suggested as a diagnostic marker for many types of cancers. However, it is not known how PKM2 is released in the blood, and whether the circulating PKM2 has any physiological function(s) in tumor progression. In this report, we demonstrate that PKM2 in the blood facilitates tumor growth by promoting tumor angiogenesis. Our experiments show that PKM2 promotes tumor angiogenesis by increasing endothelial cell proliferation, migration, and cell-ECM adhesion. Only the dimeric PKM2 possess the activity in promoting tumor angiogenesis, which is consistent with the observations that PKM2 in circulation of cancer patients is a dimer form.Entities:
Keywords: Angiogenesis; Cell Adhesion; Cell Migration; Endothelial Cell; Glycolysis; Pyruvate Kinase
Mesh:
Substances:
Year: 2014 PMID: 25070887 PMCID: PMC4162182 DOI: 10.1074/jbc.M114.576934
Source DB: PubMed Journal: J Biol Chem ISSN: 0021-9258 Impact factor: 5.157