Apoptosis & Viruses: What You Need to Know

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Discussion Overview

The discussion revolves around the mechanisms of apoptosis in virus-infected cells, particularly focusing on how a cell can undergo apoptosis despite its machinery being redirected to produce viral components. The inquiry touches on the roles of T lymphocytes and the cellular processes involved in apoptosis, including gene expression and protein synthesis.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Aviv questions how a virus-infected cell can induce apoptosis when its machinery is focused on producing viral proteins and nucleic acids.
  • Aviv acknowledges a basic understanding of T lymphocytes' role in apoptosis but seeks clarification on the intrinsic apoptotic processes within the infected cell itself.
  • It is noted that apoptosis is tightly controlled and likely involves alterations in gene expression and protein synthesis, raising questions about how these processes can occur in the presence of viral infection.
  • Another participant mentions that caspases, which are crucial for initiating apoptosis, are already present in the cell, suggesting that their activation may not be entirely dependent on the cell's normal protein production pathways.

Areas of Agreement / Disagreement

Participants express uncertainty regarding the mechanisms of apoptosis in the context of viral infection, with no consensus reached on how these processes interact or the implications for cellular function.

Contextual Notes

The discussion highlights the complexity of apoptosis regulation in virus-infected cells, including the potential for conflicting cellular processes and the need for further exploration of gene expression alterations during infection.

Who May Find This Useful

Researchers and students interested in virology, cellular biology, and apoptosis mechanisms may find this discussion relevant.

nobahar
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Hello!
I have been reading about Viruses recently, although I was already familiar with the basic process from prior reading, and have come to wonder how a virus-infected cell can be induced to apoptose when the cellular machinery (in particular in translation) has been redirected to produce viral proteins and DNA/RNA.
Msny Thanks,
Aviv.
 
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Thanks for the response Ygggdrasil.
I think that perhaps I may have misled you as to what I was enquiring about; which is my fault, as the wording is misleading.
I have a basic undertsanding of the role of T Lymphocytes in inducing apotosis in a cell; but I have come to believe that the cell itself undertakes apotosis; and since apotosis is tightly controlled, it must involve an alteration in gene expression, altered RNA and protein expression, and so on. If the cellular machinery has been redirected to produce viral products, how can the cell undertake apotosis?
Many thanks.
 
nobahar said:
Thanks for the response Ygggdrasil.
I think that perhaps I may have misled you as to what I was enquiring about; which is my fault, as the wording is misleading.
I have a basic undertsanding of the role of T Lymphocytes in inducing apotosis in a cell; but I have come to believe that the cell itself undertakes apotosis; and since apotosis is tightly controlled, it must involve an alteration in gene expression, altered RNA and protein expression, and so on. If the cellular machinery has been redirected to produce viral products, how can the cell undertake apotosis?
Many thanks.

The caspases that initiate intrinsic and extrinsic apoptosis are already present in the cell. Often sequestered in other organelles (like the mitochondria during the intrinsic pathway) or as proproteins in the cytoplasm.

http://www.biooncology.com/research/apoptosis/pathways/extrinsic/"
http://www.biooncology.com/research/apoptosis/pathways/intrinsic/index.html"
 
Last edited by a moderator:
Thanks Bobze. I'll have a more in-depth look at those pathways when I get a chance.
 

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