Target intelligence / Profile preview

Shisa family member 3 (SHISA3)

Target
SHISA3
Molecular classification
Transmembrane adaptor protein, Shisa family member, Single-pass membrane protein, Modulator of WNT and FGF signaling
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Overview

Shisa family member 3 (SHISA3) encodes a single-pass transmembrane adaptor protein of the Shisa family that regulates WNT and FGF signaling by blocking the maturation and cell surface transport of their receptors. SHISA3 functions primarily as a tumor suppressor by accelerating β-catenin degradation, thus antagonizing the WNT pathway. Loss or epigenetic silencing of SHISA3 (often via promoter hypermethylation) is associated with enhanced tumorigenesis, cancer cell proliferation, migration, metastasis, and poor clinical outcomes in various cancers. Restoration of SHISA3 expression can inhibit cancer cell growth and migration, indicating its promise as a diagnostic, prognostic, and predictive biomarker in oncology

Other names
Protein shisa-3 homologhShisa3shisa homolog 3HSHISA3SHSA3_HUMAN
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Mechanism of action

For demethylating agents: reactivation of SHISA3 by demethylation of its promoter; resulting in restored tumor suppression activity

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Biological functions

Modulation of WNT signaling (by antagonizing β-catenin)Modulation of FGF signalingRegulation of cell proliferationInhibition of cell migrationSuppression of tumorigenesis and metastasis
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Disease associations

Cancer (frequently silenced or inactivated by promoter hypermethylation in breast, lung, laryngeal, nasopharyngeal, and colorectal cancers)Tumor progression and metastasisDynamics of therapy resistance (e.g., reversal of resistance to EGFR tyrosine kinase inhibitors)
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Safety considerations

No specific molecule-related pharmacological safety concerns known; general concerns may apply for epigenetic therapies.
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Interacting drugs

5-aza-2’-deoxycytidine (decitabine)
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Biomarkers

SHISA3 promoter hypermethylation as a diagnostic and prognostic biomarker in breast, lung, and other cancersCorrelation of SHISA3 expression with response to therapies (e.g., lenalidomide efficacy in chronic lymphocytic leukemia)

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