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Ghostly metabolic messages from dying cells
Nature ^ | 18 March 2020 | Douglas R. Green

Posted on 03/18/2020 11:52:31 AM PDT by Red Badger

Cell death by a process called apoptosis inhibits inflammation in surrounding tissue. The finding that dying apoptotic cells release a tailored cocktail of metabolite molecules reveals a way in which they influence their living neighbours.

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“Marley was dead, to begin with. There is no doubt whatever about that.” The iconic opening lines of Charles Dickens’s novel A Christmas Carol convey the idea of the finality of death, a concept that pervades our thinking even when considering the demise of cells. A dead cell is, to echo Dickens’s description of Marley, “as dead as a doornail”. But just as Marley had an influence from beyond the grave to change the character of Ebenezer Scrooge in the story, cells that die can have a vital effect on the living cells around them. Writing in Nature, Medina et al.1 bring this process to life by uncovering metabolic processes in dying cells that have important consequences for the organism.

Every second, millions of cells die in our bodies owing to processes that are a normal part of life, such as tissue turnover and responses to environmental stresses2. The vast majority of these deaths occur by a process called apoptosis. This is a form of cellular suicide that is orchestrated by the actions of enzymes called caspases, which cleave hundreds of different intracellular proteins3. This regulated cleavage of various caspase targets effectively ‘packages’ the dying cell through an orderly dismantling process. DNA in the nucleus is cut into small pieces, the cytoplasmic ‘skeleton’ of filamentous actin protein is remodelled to break the cell into smaller fragments, and the exposure of a particular lipid on the cell surface signals to immune cells, such as macrophages, to take up (engulf) and digest the dying cell2.

(Excerpt) Read more at nature.com ...


TOPICS: Health/Medicine; History; Science; Society
KEYWORDS:

1 posted on 03/18/2020 11:52:31 AM PDT by Red Badger
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To: Red Badger

Biology 101.


2 posted on 03/18/2020 12:14:29 PM PDT by PrairieLady2
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To: Red Badger

when you’re undernourished (ie low in nutrients) your body does not perform apoptosis. Therefore, abnormal cells flourish (which is cancer). There are a few nutrients that facilitate apoptosis, one of which is iodine.


3 posted on 03/18/2020 12:16:23 PM PDT by spacejunkie2001
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To: PrairieLady2

More like Biology 1001.


4 posted on 03/18/2020 12:21:07 PM PDT by fella ("As it was before Noah so shall it be again,")
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To: SunkenCiv

*ping*


5 posted on 03/18/2020 12:22:03 PM PDT by fieldmarshaldj (Dear Mr. Kotter, #Epsteindidntkillhimself - Signed, Epstein's Mother)
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To: Red Badger

They even have audio now. As each cell dies it is heard to be saying, “It’s getting darker!”


6 posted on 03/18/2020 12:34:23 PM PDT by Pilgrim's Progress (http://www.baptistbiblebelievers.com/BYTOPICS/tabid/335/Default.aspx D)
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To: Red Badger
This regulated cleavage of various caspase

Before FDR, cleavage was largely unregulated.

7 posted on 03/18/2020 12:38:29 PM PDT by Sirius Lee (They are openly stating that they intend to murder us. Prep if you want to live.)
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To: Sirius Lee

It still is in certain places...................


8 posted on 03/18/2020 12:39:04 PM PDT by Red Badger (If people were to God like dogs are to people, the world would be a really great place..............)
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To: spacejunkie2001
There are a few nutrients that facilitate apoptosis, one of which is iodine.

Also sulforaphane rich vegetables like Broccoli, Cauliflower, Cabbage..

9 posted on 03/18/2020 12:40:07 PM PDT by libh8er
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To: Red Badger
Per Oxford: 1970s from Greek apoptōsis ‘falling off’, from apo ‘from’ + ptōsis ‘falling, a fall’.

For anyone else curious about the etymology.

10 posted on 03/18/2020 12:47:02 PM PDT by mewzilla (Break out the mustard seeds.)
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To: Sirius Lee

If cleavage is outlawed, only outlaws will have cleavage...


11 posted on 03/18/2020 1:27:00 PM PDT by fhayek
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