Sunday, September 29, 2019

TINY CLOTS OF HARMLESS MUTATIONS


LINDA AND MY MOM, 1982

Dr. Francis Collins, head of NIH, could write about the chemistry of floor wax and make it interesting.  He writes a regular blog; many of you would benefit from subscribing to it.  Just Google NIH and go from there. 

In his current blog (below), Dr. Collins describes some NIH-supported research involving study of non-cancerous pockets of mutated human tissue, using cadavers.  As you almost certainly know, cells duplicate their DNA when they divide.  Since human DNA consists of over three billion base pairs, the chance for error is significant.  We have evolved some clever mechanisms for detecting and repairing these mistakes, but sometimes some survive.  These are what we term mutations.  We all have them.  Lots of them.  And yet we are walking around, in rude good health, living our lives.  Clearly, not all mutations are bad.

The work that Dr. Collins describes shows how some somatic mutations “seed” small clots of similar – abnormal –  cells.  Clots, but not tumors. 
I don’t see a direct connection of this research to our primary goal – to cure cancer.  But I am sure that the more basic bio-stuff we learn the closer to that great finish line we are.  I am willing to pay taxes to further that goal.  Just don’t spend my money on border walls or weapons for Saudi Arabia!

If you read Dr. Collins’ blog (and you should), you might be amused by clicking on some of the internal “blue passages” (links).  They will provide you with a small taste of the world the cancer biologists operate in.  Thank God this stuff is filtered through people like Francis Collins before it reaches the rest of us.


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