TGF-β - an excellent servant but a bad master

Area of Science:

• Cellular Biology
• Molecular Biology
• Oncology

Background:

• The transforming growth factor-beta (TGF-β) family regulates critical cellular processes including development and tissue homeostasis.
• Decades of research have elucidated key aspects of TGF-β signal transduction, involving receptor activation, SMAD protein phosphorylation, and gene expression regulation.

Purpose of the Study:

• To review the current understanding of TGF-β signaling pathways.
• To explore the mechanisms of TGF-β pathway impairment in solid tumors and hematological malignancies.

Main Methods:

• Literature review of TGF-β signaling mechanisms.
• Analysis of TGF-β pathway dysregulation in cancer.

Main Results:

• TGF-β acts as a tumor suppressor by inhibiting cell proliferation.
• In cancer cells, TGF-β signaling can be altered, leading to an oncogenic role.
• Dysregulation of the TGF-β pathway is implicated in numerous human diseases, including various cancers.

Conclusions:

• The TGF-β pathway is a complex network with a dual role in cancer, acting as both a tumor suppressor and an oncogenic factor depending on the cellular context.
• Understanding the mechanisms of TGF-β pathway impairment is vital for developing targeted cancer therapies.