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Drug Target Encyclopedia Series (12) — CD63
Release Time：
2025-12-05 13:43
CD63 is a member of the tetraspanin superfamily, primarily located in late endosomes, lysosomes, and extracellular vesicles (EVs). As one of the most widely used exosome markers, CD63 regulates vesicle trafficking, cell adhesion, and immune signaling.
CD63 is implicated in:
• Exosome biology – controlling vesicle budding and cargo sorting, widely applied as an EV biomarker.
• Immune regulation – mediating mast cell degranulation and allergic responses.
• Cancer progression – promoting tumor invasion and metastasis through exosome-mediated signaling.
• Cardiovascular disease – involved in platelet activation, thrombosis, and vascular inflammation.
Therapeutic potential of CD63:
- Exosome-based therapies – CD63 is engineered for targeted delivery of mRNA, siRNA, and therapeutic proteins.
- Antibody strategies – anti-CD63 antibodies show promise in controlling mast cell–driven allergic disorders.
- Oncology applications – CD63-positive exosomes are studied as biomarkers for early detection and monitoring of tumor progression.
- Nanomedicine innovation – CD63 tagging enables the design of EV-based drug carriers with improved targeting and stability.
Challenges ahead: The ubiquitous expression of CD63 across immune and non-immune cells poses safety concerns for systemic interventions. Specific targeting strategies and advanced delivery systems will be critical for clinical translation.
🔬 Future directions: CD63-guided exosome engineering, liquid biopsy diagnostics, and integration with immunotherapies are rapidly emerging research frontiers.
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