Understanding more about ESCs is important in cancer research. Tumours induce angiogenesis, which is the formation of new blood vessels. These cancerous cells do this by secreting factors such as VEGF and by reducing the amount of PGK, an anti-VEGF enzyme. The result is an uncontrolled production of beta-catenin, which regulates cell growth and cell mobility. With uncontrolled beta-catenin, the cell loses its adhesive properties. As ECs get packed together to create the lining for a new blood vessel, a single cancer cell is able to travel through the vessel to a distant site. If that cancer cell implants itself and begins forming a new tumour, the cancer has metastasized.
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