summary about cells

summary about cells - cells and spit out the remains...

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Chien Chiu Hsiung Professor Marra CC3.32, Geology October 8, 2009 Title: Self-Destructive Behavior in Cells May Hold Key to a Longer Life By: Carl Zimmer We have known that our body cells are cannibals that consume themselves, shredding their own complex molecules to pieces and recycling them for new parts for our body. Just recently scientists have found a connection between our cannibal cells and diseases like Alzheimer and cancer. Dr. Klionsky published a paper online in Trends in Cell Biology saying that “this cannibalism may extend our lifespan.” There are two kinds of recycling factories proteasome and lysosome. Proteasome a tiny cluster of proteins which they can swallow individual proteins and chew them up. On the other hand, Lysosome is a huge bubble packed with toxic enzymes that can destroy big structures like mitochondria. They would chew apart
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Unformatted text preview: cells and spit out the remains. However, the chewed up remains has a purpose, it is use to build new molecules. In recent years, scientists found autophagy which can help prevent many diseases like Alzheimer. This particular disease is the result of certain kinds of proteins forming clumps and lysosome can eat these clumps before they cause damage. Lysosome may also protect us against cancer because they can eat up defective mitochondria that give off charged molecules that can cause damage to cells and lead to cancerous mutations. As we age, our cells lose their cannibalistic because of the decline of autophagy that is why old people get like Alzheimer and other diseases much easier than young people. Scientists believe that they can slow the aging process by increasing autophagy on old people....
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This note was uploaded on 10/19/2011 for the course CORC 1332 taught by Professor Murtha during the Fall '09 term at CUNY Brooklyn.

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