SHPS1 Protein – A Multifunctional Cell-Surface Receptor Governing Immunity, Homeostasis and Disease

Published by ANT BIO PTE. LTD.

1. Core Concepts

SHPS1 (also known as SIRPα) is a highly conserved transmembrane glycoprotein receptor belonging to the immunoglobulin superfamily. It acts as a central molecular hub that regulates immune tolerance, phagocytosis, neural function, vascular homeostasis, and cancer immune evasion. Through binding to its ligand CD47 and recruiting intracellular phosphatases SHP-1/2, SHPS1 controls the “don’t-eat-me” signaling axis and maintains cellular and tissue balance.

2. Research Frontiers

• Structural basis of the SHPS1–CD47 “don’t-eat-me” axis
• Context-dependent roles in cancer immune escape and immunotherapy
• Regulatory functions in neurodegenerative diseases and neuroinflammation
• Tissue-specific signaling and crosstalk with other pathways
• Therapeutic development: antibodies, inhibitors, and targeted biologics

3. Research Significance

SHPS1 is a master regulator of immune recognition and cellular crosstalk. Its dysregulation drives cancer, neurodegeneration, autoimmune diseases, and cardiovascular disorders. As a druggable target, it opens new avenues for next‑generation immunotherapy and precision medicine. Reliable research tools are essential to dissect its mechanisms and accelerate translational research.

4. Key Mechanisms & Research Applications

4.1 Molecular Structure and Regulation

SHPS1 comprises three extracellular Ig‑like domains, a transmembrane helix, and four intracellular tyrosine phosphorylation sites. It is widely expressed in myeloid immune cells, neurons, endothelial cells, and epithelial cells. Its expression is dynamically regulated by inflammatory cytokines, epigenetic modifications, and microRNAs.

4.2 Core Biological Functions

• Immune tolerance: The SHPS1–CD47 axis sends inhibitory signals to macrophages, preventing phagocytosis of healthy cells.
• Neural function: Modulates synaptic plasticity, neurite growth, and microglial clearance activity.
• Vascular homeostasis: Regulates angiogenesis and endothelial barrier integrity.
• Cell behavior: Controls migration, proliferation, and differentiation through phosphatase‑dependent and ‑independent signaling.

4.3 Roles in Diseases

• Cancer: Tumors overexpress CD47 to hijack SHPS1 signaling and escape macrophage phagocytosis. Blocking this axis revives anti‑tumor immunity.
• Neurodegeneration: SHPS1 dysfunction impairs amyloid‑beta clearance and dopaminergic neuron survival in Alzheimer’s and Parkinson’s diseases.
• Autoimmunity & cardiovascular diseases: Contributes to inflammatory disorders and atherosclerosis.

4.4 Therapeutic Potential

Inhibitors and antibodies targeting SHPS1 or CD47 are under clinical development to enhance phagocytosis and treat cancer and neurological disorders.

5. Research Tools Empowered by ANT BIO PTE. LTD.

ANT BIO PTE. LTD. provides high‑quality reagents to support SHPS1 research, including highly specific antibodies, recombinant proteins, and detection kits.

Core Product Advantages

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Key Application Scenarios

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6. Brand Mission

ANT BIO PTE. LTD. is a premium provider of life science reagents, offering high‑performance antibodies, recombinant proteins, assay kits, and general laboratory reagents. We operate three specialized sub‑brands: Absin (general reagents & kits), Starter (antibodies), and UA (recombinant proteins), delivering integrated solutions to advance global research in immunology, oncology, and neuroscience.

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At ANTBIO, we are committed to advancing life science research through high-quality, reliable reagents and comprehensive solutions. Our specialized sub-brands (Absin, Starter, UA) cover a full spectrum of research needs, from general reagents and kits to antibodies and recombinant proteins. With a focus on innovation, quality, and customer-centricity, we strive to be your trusted partner in unlocking scientific mysteries and driving medical progress. Explore our product portfolio today and elevate your research to new heights.