Viruses as key modulators of the TGF-β pathway; a double-edged sword involved in cancer

Area of Science:

• Molecular Biology
• Cell Signaling
• Oncology
• Virology

Background:

• The transforming growth factor-β (TGF-β) signaling pathway is crucial for cell proliferation, differentiation, apoptosis, and migration.
• TGF-β signaling acts as a double-edged sword, exhibiting anti-tumor effects early in tumorigenesis and pro-tumor effects in later stages.
• Viral infections can perturb cellular signaling pathways, including TGF-β, influencing disease progression.

Purpose of the Study:

• To review how oncogenic viruses and other viruses modulate the TGF-β signaling pathway.
• To elucidate the mechanisms by which viruses interfere with TGF-β signaling.
• To highlight the potential of targeting the TGF-β pathway for cancer therapy in the context of viral infections.

Main Methods:

• Literature review of studies investigating viral interference with TGF-β signaling.
• Analysis of mechanisms including alterations in TGF-β expression, receptor/SMAD modulation, and non-SMAD pathway interactions.
• Exploration of indirect viral interactions via transcriptional regulators.

Main Results:

• Viruses interfere with TGF-β signaling through multiple mechanisms: altering TGF-β expression/activation, modulating TGF-β receptors and SMADs, affecting non-SMAD pathways, and indirectly interacting via transcriptional regulators.
• Viral modulation of TGF-β signaling can contribute to cancer development and progression.
• The review identifies key viral factors and TGF-β pathway molecules as potential therapeutic targets.

Conclusions:

• The TGF-β signaling pathway is a significant target for therapeutic intervention against viral-associated cancers.
• Understanding viral modulation of TGF-β signaling is crucial for developing novel treatment strategies.
• Further research into targeting viral factors and TGF-β pathway molecules holds promise for managing viral infection consequences, including cancer.