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Insulin signaling network in cancer

Alpana Ray, Mohamed Alalem, Bimal K Ray

Indian Journal of Biochemistry & Biophysics

|April 1, 2015

Summary

Insulin, crucial for blood glucose control, is increasingly linked to cancer development. Aberrant insulin levels and signaling pathways may promote tumor growth, highlighting a complex insulin-cancer relationship.

Area of Science:

Endocrinology
Oncology
Molecular Biology

Background:

Insulin primarily regulates blood glucose levels.
Emerging evidence links abnormal insulin levels and signaling to cancer development and progression.
Observational studies associate conditions like obesity and type II diabetes with increased cancer incidence due to hyperinsulinemia.

Purpose of the Study:

To review the multifaceted role of insulin in physiological processes.
To elucidate the relationship between insulin and cancer development.
To focus on the specific mechanisms of insulin signaling in cancer.

Main Methods:

Review of existing observational and epidemiological studies.
Analysis of cellular signaling pathways initiated by insulin.
Comparison of cancer risks associated with different diabetes treatments.

Main Results:

Certain diabetes treatments, particularly insulin and insulin secretagogues, are associated with a higher risk of solid cancers compared to metformin.
Insulin resistance and hyperinsulinemic states are linked to increased cancer incidence.
Insulin-mediated cellular signaling pathways offer insights into cancer promotion.

Conclusions:

Insulin's role extends beyond glucose regulation to influencing cancer.
Understanding insulin signaling is critical for cancer prevention and treatment strategies.
Further research is needed to fully delineate the insulin-cancer connection.

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