Cell Biology

Subject / Started by Replies / Views
  • 2 Replies
  • 232 Views
  • 2 Replies
  • 784 Views
  • 2 Replies
  • 738 Views
  • 2 Replies
  • 694 Views
  • 2 Replies
  • 528 Views
  • 2 Replies
  • 194 Views
  • 2 Replies
  • 920 Views
  • 2 Replies
  • 1003 Views
  • 2 Replies
  • 481 Views
  • 2 Replies
  • 613 Views
In 1971, Dr Judah Folkman published the "angiogenic hypothesis" suggesting that a tumor cannot grow beyond 1–2 millimeters without the development (angiogenesis) of new blood vessels that provide access to oxygen and nutrients. During the 1990s, it was discovered that vascular endothelial growth factor (VEGF) stimulates the proliferation and migration of the cells that form blood vessels, leading to the formation of new blood vessels. VEGF binds to receptor tyrosine kinases (RTKs) on the cell surface and causes the RTKs to dimerize and become active, thereby initiating an intracellular signaling cascade that stimulates cell division and inhibits apoptosis. Many cancer cells secrete high levels of VEGF. Increased VEGF expression in a tumor is correlated with a poor medical outcome for the patient. Some evidence suggests that blocking VEGF-dependent signaling may prevent the formation of new blood vessels and lead to the death of immature blood vessels without disturbing mature blood vessels. You work for a biotechnology company that seeks to create anticancer drugs that prevent the growth of tumors and/or cause tumors to shrink, while leaving normal cells relatively untouched. After learning about VEGF, you have a bright idea for a new mechanism of action for a potential anticancer drug. What is your idea?

Started by Jenae

  • 2 Replies
  • 129 Views
  • 2 Replies
  • 427 Views
  • 2 Replies
  • 425 Views
  • 2 Replies
  • 588 Views
  • 2 Replies
  • 917 Views
  • 2 Replies
  • 366 Views
  • 2 Replies
  • 317 Views
  • 2 Replies
  • 550 Views
  • 2 Replies
  • 1018 Views
  • 2 Replies
  • 278 Views