Beyond cyclopamine: Targeting Hedgehog signaling for cancer intervention

Area of Science:

• Molecular Biology
• Cell Biology
• Oncology

Background:

• Hedgehog (Hh) signaling is vital for embryonic development, wound healing, and organ homeostasis.
• Aberrant Hh signaling is implicated in oncogenesis, contributing to tumor progression and adverse clinical outcomes.
• The Hh pathway mediates cellular responses through Glioma Associated Oncogene Homolog (GLI) transcription factors.

Purpose of the Study:

• To review the components of the Hh signaling pathway, including ligands and signal transduction mechanisms.
• To describe the target genes regulated by Hh signaling.
• To comprehensively evaluate various inhibitors targeting the Hh pathway for potential use in neoplastic diseases.

Main Methods:

• Literature review of Hh signaling pathways.
• Analysis of Hh pathway components (ligands, receptors, downstream effectors).
• Compilation and assessment of inhibitors targeting SMO or GLI transcription factors in cancer.

Main Results:

• Detailed narration of Hh ligands and signal transduction pathways.
• Identification of key target genes involved in Hh-mediated cellular processes.
• Comprehensive description of numerous Hh pathway inhibitors evaluated in various cancer types.

Conclusions:

• Hh signaling is a critical target for cancer therapy.
• Inhibitors of SMO and GLI offer promising strategies for oncological intervention.
• Further evaluation of these inhibitors is warranted for diverse neoplastic settings.