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The PI3K-Akt-mTOR pathway in initiation and progression of thyroid tumors

Motoyasu Saji1, Matthew D Ringel

  • 1Divisions of Endocrinology, Diabetes and Metabolism, The Ohio State University Medical Center, The Ohio State University and The Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University, Columbus, OH, USA.

Molecular and Cellular Endocrinology
|November 10, 2009
PubMed

Insights

The phosphoinositide-3 (OH) kinase (PI3K) pathway regulates cell functions and its overactivation is common in cancer. This review discusses PI3K signaling in thyroid cancer and its therapeutic potential.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • The phosphoinositide-3 (OH) kinase (PI3K) signaling cascade is crucial for cell survival, regulating glucose metabolism, growth, and motility.
  • Aberrant PI3K pathway activation is a hallmark of many cancers, driven by genetic mutations, epigenetic changes, and posttranslational modifications.

Purpose of the Study:

  • To review the key signaling molecules within the PI3K cascade.
  • To examine known PI3K pathway abnormalities in thyroid cancer.
  • To discuss the therapeutic targeting potential of PI3K pathway members in thyroid cancer.

Main Methods:

  • Literature review of PI3K signaling in cancer.
  • Analysis of genetic and epigenetic alterations in thyroid cancer related to PI3K.
  • Discussion of therapeutic strategies targeting the PI3K pathway.

Main Results:

  • Constitutive PI3K activation is implicated in thyroid neoplasia, including Cowden's syndrome.
  • Overactivation of PI3K signaling is frequently observed in sporadic thyroid cancers, correlating with aggressive behaviors.

Conclusions:

  • The PI3K pathway is a significant contributor to thyroid cancer development and progression.
  • Targeting PI3K pathway components presents a promising therapeutic avenue for thyroid cancer treatment.

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