How does angiogenesis relate to cancer?

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Angiogenesis refers to the process by which new blood vessels are formed from existing ones. In the context of cancer, this process is particularly crucial because tumors require a blood supply to grow and thrive. As tumors expand, they can trigger a variety of signals that stimulate nearby endothelial cells (the cells lining blood vessels) to proliferate and form new vessels. This newly formed vasculature supplies essential nutrients and oxygen to the tumor, facilitating its growth and providing a pathway for cancer cells to enter the bloodstream, potentially leading to metastasis.

The relationship between angiogenesis and cancer underscores why targeting this process has become a focus in cancer treatments. By inhibiting angiogenesis, it is possible to starve tumors of the nutrients and oxygen they need to grow, thus hindering their development and spread. Thus, the role of angiogenesis is a fundamental aspect of how tumors can thrive and why it is so central to cancer biology.