Question

why iis so difficult to stop a drug that will stop cell division only tumor cells?

Answer 1

ANS:The tumor cells arise from own tissue and your own cells, so both of the immune system as well as drugs will not be able to differentiate them from each other.The process of cell division in tumor cells is the same as in normal cells, just less regulated.

1.Generally cancer cells multiply more quickly and so the body’s cells are not affected as much. Currently the Israelis are testing a drug that has promise. Cancer cells should be susceptible to the body’s immune system, but they apparently develop a covering that prevents the body’s immune system from getting to them. This drug eliminates the protective layer that prevents immune system action and seems to show promise in treating and even eliminating many types of cancer.

2.A lot of work is being done to find features in cancer cells that aren't present in healthy cells. There have been drugs developed that are far more selective against the tumors . The negative is that tumors can evolve resistance to the therapy and that a patient needs to have the right mutation or else the drug isn't useful.