Drugs to Prevent Cell Suicide

MrErlenmeyer writes "Many injuries and diseases including heart attacks, stroke, and Parkinson's cause healthy cells to kill themselves. A group of scientists at Washington University in Saint Louis believe they have a lead on how to stop apoptosis (unwanted cell suicide) and thus minimize the tissue damage that occurs as a result of these injuries. They designed drugs that halt the actions of executioner caspases, proteins that act as a molecular wrecking crew. Other scientists had found that a chemical called isatin could prevent tissue damage in rabbit hearts that were deprived of oxygen. This was the starting point for the team of researchers in Missouri. By making some changes to the molecule, they were able to develop an even more effective molecule. With some further refinement, this may lead to a new class of emergency medications."

Comments

Apoptosis not "unwanted"

[Anonymous Coward]

As stated in the second paragraph of the article, apoptosis is simply the process of cell death--a something perfectly normal and required by the body. Hardly "unwanted"! See http://en.wikipedia.org/wiki/Apoptosis

Apoptosis

[HomelessInLaJolla]

The summary characterizes apoptosis as unwanted cell suicide which, in most cases, it most certainly is not. Apoptosis is one of the natural mechanisms by which the body eliminates cells which have become damaged, dysfunctional, or are simply no longer needed.

Especially with respect to cancer research apoptosis is a pathway which we seek to activate. Cells which become cancerous are supposed to enter apoptotic cycles and prevent themselves from creating tumors within the tissue. Cancerous cells manage to win the race condition between apoptotic and survival pathways but, in terms of the mechanisms at work within the cell, are tottering on the edge. Many new cancer treatments rely on this on the edge circumstance in the interest of introducing a pharmacologically active substance into the body which will cause cancerous cells, on the edge of apoptosis, to move fully into apoptotic function.

Since the cells in the body are constantly in a state of self-regulation and interregulation it is possible that cells which enter apoptosis too easily are similarly causes of diseases. It is this set of conditions that the researchers in the article wish to treat.

Don't be misled about what apoptosis actually is, though, or be swayed to view it as good or bad. Different conditions within the tissue call for different actions within the cells which make up that tissue.