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p66SHC: the apoptotic side of Shc proteins

M Pellegrini1, S Pacini, C T Baldari

  • 1Department of Evolutionary Biology, University of Siena, Via Aldo Moro 2, 53100, Siena, Italy.

Apoptosis : an International Journal on Programmed Cell Death
|February 16, 2005
PubMed

Insights

Shc proteins, particularly the 66 kDa ShcA isoform, are crucial regulators of apoptosis. They play a key role in oxidative stress responses, influencing cell survival, proliferation, and aging processes.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • Shc proteins are involved in receptor tyrosine kinase signaling pathways.
  • Initially linked to Ras activation, their roles extend to cell proliferation, survival, and apoptosis.
  • Recent research highlights their significance in regulating cell death pathways.

Purpose of the Study:

  • To review the role of Shc proteins as promoters of apoptosis.
  • To focus on the 66 kDa isoform of ShcA (ShcA p66).
  • To emphasize the established role of ShcA p66 in oxidative stress and aging.

Main Methods:

  • Literature review of existing studies on Shc proteins and apoptosis.
  • Focus on molecular mechanisms linking ShcA p66 to oxidative stress.
  • Analysis of data supporting ShcA p66's role in cell death and aging.

Main Results:

  • Shc proteins, especially ShcA p66, actively promote apoptosis.
  • ShcA p66 is a critical regulator of cellular responses to oxidative stress.
  • The 66 kDa isoform of ShcA is firmly established as a key player in apoptosis and aging.

Conclusions:

  • Shc proteins are significant regulators of apoptosis.
  • The 66 kDa ShcA isoform is a pivotal mediator of oxidative stress-induced cell death.
  • Understanding ShcA p66 function is crucial for insights into aging and age-related diseases.

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