Certain chemokines, such as CCL2, CXCL8, and CXCL12, can promote tumor growth by attracting immune cells that support tumor development. For example, CCL2 recruits macrophages that can secrete growth factors to support tumor proliferation. CXCL12, on the other hand, attracts endothelial cells and promotes angiogenesis, providing tumors with a blood supply that is essential for their growth.
