Signaling pathways in HPV-associated cancers and therapeutic implications

Area of Science:

• Oncology
• Virology
• Molecular Biology

Background:

• Human papillomaviruses (HPVs) are linked to various cancers.
• HPV oncoproteins (E5, E6, E7) disrupt cellular signaling pathways.
• 12 HPV types are classified as carcinogenic by IARC/WHO.

Purpose of the Study:

• To review signaling pathways altered by HPV oncoproteins.
• To describe targeted therapies against key signaling molecules.
• To highlight therapeutic implications for HPV-associated cancers.

Main Methods:

• Literature review of signaling pathways activated by HPV oncoproteins.
• Summary of targeted therapy approaches against key signaling molecules.
• Discussion of therapeutic implications and ongoing research.

Main Results:

• HPV E6 inactivates tumor protein 53 and PDZ proteins, activating PI3K/Akt, Wnt, and Notch pathways.
• HPV E7 inhibits retinoblastoma protein and activates the PI3K/Akt pathway.
• HPV E5 enhances PI3K/Akt and MAPK signaling and inhibits apoptosis.

Conclusions:

• Altered signaling pathways are crucial for HPV-driven cancer initiation and progression.
• Targeted therapies against PI3K/Akt, EGFR, and VEGF show therapeutic potential.
• Further research and clinical trials are needed for effective HPV cancer treatment.