| Code | CSB-AP000951HU |
| Abbreviation | Recombinant Human CCL22 protein (Active) |
| MSDS | |
| Size | $142 |
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CCL22 (macrophage-derived chemokine) plays a central role in recruiting CCR4-expressing regulatory T cells and Th2 lymphocytes to sites of inflammation and tumor microenvironments, making it a critical tool for dissecting immune cell trafficking. This tag-free recombinant human CCL22 encompasses the full-length mature sequence (residues 25–93) and demonstrates confirmed chemotactic activity on primary human T-lymphocytes at 10–100 ng/ml, providing a suitable basis for Transwell migration assays, CCR4 signaling studies involving MAPK and NF-κB pathway activation, and in vivo models of tumor immune evasion or allergic inflammation. Endotoxin levels below 1.0 EU/μg minimize LPS-driven artifacts that can confound cytokine-dependent readouts in sensitive immune cell assays, while purity exceeding 97% by SDS-PAGE supports use as a reliable reference standard in chemokine detection ELISAs or as a positive control for anti-CCL22 antibody validation. The E. coli-derived, untagged format ensures the protein aligns with standards expected in functional studies requiring unmodified ligand-receptor interactions.
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