• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Apoptosis and Cancer

Extracts from this document...


´╗┐Apoptosis and Cancer Apoptosis is a type of cell death often refered to as cell suicide or programmed cell death. In apoptosis the cell recieves a message from the body that it needs to die. Special proteins destroy the components of the cell that are necessary for its survival. Enzymes break down the DNA within the cell. The cell shrinks and emits signals that are picked up by microphages. Microphages take care of the failing cell and leave no traces. ...read more.


If the cell receives the message to die it triggers apoptosis. Scientists have used their understanding of apoptosis and the messages the body sends to cells to develop treatments for cancer. Cancer is an uncontrolled growth or spreading of cells. By inducing apoptosis in these cells, the cancerous cells not only stop spreading but those cells are also thoroughly disposed of and unable to remain in the body to do it damage. Anti-cancer drugs and radiation trigger apoptosis in diseased cells. ...read more.


This leads to apoptosis being selectively overriden because there is an overexpression of the signal for apoptosis. In particular a mutation in p53, a protien, can cause cells with damaged DNA to not undergo apoptosis like they should. This can cause tumors to develop. Apoptosis is different from the other form of cell death, necrosis, in that necrosis occurs when there is an injury to the cell. Apoptosis occurs if triggered. Necrosis can leave dead damaged cells behind, while apoptosis removes the cell completely. Since cancer can be caused by a signal failure or mutation of a gene that controls cell growth, apoptosis and cancer are the focus of many studies instead of necrosis. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Molecules & Cells section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Molecules & Cells essays

  1. Liver and its role

    reaction may decrease, because there will be competition between inhibitor and substrate. This is an additional factor affecting enzyme activity. However in this experiment there will be no inhibition between any substrates, as only one substrates will be present in the solution with the enzymes.

  2. Follicular development

    The inhibitory effects of oestrogen act mainly via the pituitary gland, such that, when an hourly infusion of GnRH was given to rats, in response to estradiol, the secretion of LH was reduced. The inhibitory effects of oestrogen may also act on the hypothalamus pulse generator, such that the GnRH

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work