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mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
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Culturing and Manipulation of O9-1 Neural Crest Cells
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CAS proteins in normal and pathological cell growth control.

Nadezhda Tikhmyanova1, Joy L Little, Erica A Golemis

  • 1Fox Chase Cancer Center, 333 Cottman Ave., Philadelphia, PA, 19111, USA.

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|November 26, 2009
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Summary

Crk-associated substrate (CAS) proteins regulate cell functions and are linked to cancer metastasis and therapeutic resistance. This review explores their roles in normal and pathological conditions.

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Cancer Research

Background:

  • Crk-associated substrate (CAS) proteins (BCAR1, NEDD9, EFS, CASS4) are key regulators of cellular processes.
  • CAS proteins function as scaffolds, influencing migration, apoptosis, cell cycle, and differentiation.
  • Emerging evidence links CAS proteins to progenitor cell function.

Purpose of the Study:

  • To review the multifaceted roles of CAS proteins in normal and pathological cellular functions.
  • To explore mechanistic insights into CAS protein function over the past decade.
  • To highlight the significance of CAS proteins in various diseases and therapeutic resistance.

Main Methods:

  • Literature review of studies on CAS protein family members.
  • Analysis of research on CAS protein involvement in cell biology.
  • Synthesis of findings related to CAS proteins in cancer and other diseases.

Main Results:

  • CAS protein overexpression correlates with poor cancer prognosis and metastasis.
  • CAS proteins are implicated in resistance to chemotherapy across multiple cancer types.
  • CAS proteins are associated with inflammatory disorders, neurodegenerative diseases, and developmental defects.

Conclusions:

  • CAS proteins play critical roles in both normal cellular functions and the development of various pathologies.
  • Understanding CAS protein mechanisms is crucial for developing targeted therapies.
  • Further research into CAS protein functions can illuminate new therapeutic strategies for cancer and other diseases.