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Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
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Oncogene Expression Analysis with Alterations in pH in a Pancreatic Ductal Cell Line
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Translational control by oncogenic signaling pathways.

Beichen Gao1, Philippe P Roux2

  • 1Institute for Research in Immunology and Cancer (IRIC), Université de Montréal, Montréal, Québec, Canada.

Biochimica Et Biophysica Acta
|December 6, 2014
PubMed
Summary
This summary is machine-generated.

Cancer cells hijack messenger RNA (mRNA) translation initiation to boost protein synthesis and promote tumor growth. Key signaling pathways like PI3K/Akt and Ras/MAPK regulate this process, impacting cancer development.

Keywords:
CancerMAPKProtein synthesismRNA translationmTORmTORC1

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Area of Science:

  • Molecular Biology
  • Cancer Biology
  • Gene Expression

Background:

  • Messenger RNA (mRNA) translation is a highly regulated cellular process vital for gene expression.
  • Translation initiation is a rate-limiting step frequently targeted by oncogenic signaling in cancer.
  • Cancer cells utilize translational control to adapt metabolism and promote tumor progression.

Purpose of the Study:

  • To review the roles and regulation of mRNA translation by oncogenic signaling pathways.
  • To highlight the relevance of these molecular mechanisms in human malignancies.
  • To discuss the interplay between signaling pathways, mTOR, and cancer metabolism.

Main Methods:

  • Literature review of current knowledge on mRNA translation and cancer signaling.
  • Analysis of the involvement of PI3K/Akt and Ras/MAPK pathways in translational control.
  • Examination of the mechanistic/mammalian target of rapamycin (mTOR) as a central signaling node.

Main Results:

  • Oncogenic pathways modulate both global and specific mRNA translation.
  • These pathways converge on mTOR, linking nutrient sensing to protein synthesis regulation.
  • Aberrant translational control is a critical factor in cancer development and progression.

Conclusions:

  • Targeting mRNA translation offers potential therapeutic strategies for cancer.
  • Understanding translational regulation by oncogenic pathways is crucial for cancer research.
  • Dysregulated translation contributes significantly to the pathophysiology of human cancers.