Research Advances and Applications of SHPS1 Recombinant Protein

Published by ANT BIO PTE. LTD.

1. Concept

SHPS1 (also named SIRPα) is a heavily glycosylated transmembrane receptor that regulates immune tolerance, phagocytosis, and cell signaling through the CD47–SHPS1 axis. SHPS1 recombinant protein is a bioactive, genetically engineered protein widely used for studying molecular interactions, signaling mechanisms, drug screening, and diagnostic development in immunology and oncology.

2. Research Frontiers

Recent advances in SHPS1 recombinant protein research include:

• Multiple expression systems (mammalian, insect, prokaryotic) supporting native‑like post‑translational modifications.
• Engineered variants: phosphorylation mutants, glycosylated isoforms, and truncated ectodomains for structural and functional studies.
• High‑resolution structural analysis of the SHPS1–CD47 complex using cryo‑EM and X‑ray crystallography.
• SHPS1‑based drug discovery targeting the “don’t eat me” immune checkpoint.
• SHPS1 as a potential biomarker for cancer and neurodegenerative diseases.

3. Research Significance

SHPS1 recombinant protein is a critical tool for modern life science research:

• Uncovers regulatory mechanisms of macrophage phagocytosis and immune evasion.
• Enables high‑throughput screening for cancer immunotherapies.
• Supports structural biology and rational drug design.
• Provides standardized materials for diagnostic kit development and quantitative detection.

4. Preparation, Quality Control and Research Applications

4.1 Preparation Technology

SHPS1 recombinant protein is manufactured using three major expression systems:

• Mammalian cells (HEK293, CHO): Produce full‑length, properly glycosylated, and biologically active protein.
• Insect cells (Sf9): Suitable for large‑scale production with moderate post‑translational modification.
• Prokaryotic cells (E. coli): Cost‑effective for expressing non‑glycosylated functional domains.

Key steps include vector construction with His/FLAG/Fc tags, transfection, stable cell line screening, detergent‑based solubilization, and multi‑step chromatographic purification.

4.2 Quality Control and Characterization

Strict quality control ensures reliable experimental results:

• Purity: ≥95% validated by SDS‑PAGE and HPLC.
• Molecular weight: Verified by mass spectrometry.
• Structure: Confirmed by circular dichroism (CD), NMR, X‑ray crystallography, or cryo‑EM.
• Bioactivity: Tested by SPR/BLI for CD47 binding, phosphorylation assays, and phagocytosis function.
• Stability: Evaluated for thermal, storage, and freeze–thaw performance; storage at −80°C is recommended.

4.3 Applications in Scientific Research

SHPS1 recombinant protein supports multiple research areas:

• Molecular interaction analysis: Quantifies high‑affinity binding between SHPS1 and CD47.
• Signaling pathway study: Activates SHP‑1/SHP‑2 and integrin signaling in a controlled manner.
• Drug screening: Serves as a target for inhibitors and therapeutic antibodies that block the CD47–SHPS1 axis.
• Diagnostic development: Used as a standard antigen for detecting SHPS1 levels in clinical samples.

4.4 Challenges and Future Perspectives

Current challenges include in vivo delivery, production cost, and stability of membrane proteins. Future directions focus on:

• Protein engineering to enhance stability and affinity.
• Multifunctional fusion proteins for therapy and imaging.
• Glycoengineering to improve pharmacokinetic properties.
• Clinical translation of SHPS1‑based therapeutics and diagnostics.

5. Our Mission at ANT BIO PTE. LTD.

ANT BIO PTE. LTD. supports breakthroughs in immunology, oncology, and translational medicine by providing high‑purity, bioactive SHPS1 recombinant proteins and supporting reagents. Our products are designed for consistent performance in basic research, drug discovery, and diagnostic development.

6. Featured SHPS1‑Related Products

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