Secreted frizzled related proteins: Implications in cancers

Area of Science:

• Oncology
• Molecular Biology
• Developmental Biology

Background:

• The Wnt signaling pathway regulates cell proliferation, migration, and differentiation, impacting embryonic development, tissue homeostasis, and cancer progression.
• Secreted frizzled-related proteins (SFRPs) are key extracellular antagonists of Wnt signaling, binding Wnt ligands or Frizzled receptors.
• Aberrant SFRP expression and epigenetic silencing via promoter hypermethylation are increasingly linked to various human cancers.

Purpose of the Study:

• To comprehensively review the current knowledge on SFRP family members and their roles in diverse human cancers.
• To highlight the potential of SFRPs as tumor suppressors and therapeutic targets in Wnt-driven tumorigenesis.

Main Methods:

• Literature review of studies investigating SFRP expression, function, and epigenetic regulation in cancer.
• Analysis of the association between SFRPs, Wnt signaling, and tumorigenesis across different cancer types.

Main Results:

• SFRP gene expression is frequently lost in cancers due to promoter hypermethylation, suggesting a tumor suppressor role.
• Epigenetic modifying agents can potentially restore SFRP expression, thereby inhibiting Wnt signaling and counteracting cancer progression.
• SFRP family members exhibit varied roles and expression patterns across different malignancies.

Conclusions:

• SFRP family members are critical regulators of Wnt signaling with significant implications in cancer.
• Restoring SFRP expression through epigenetic therapies presents a promising strategy for combating Wnt-driven cancers.
• Further research into SFRPs is warranted to fully elucidate their functions and therapeutic potential in oncology.