CD52 is present on the surface of mature lymphocytes, but not on the stem cells from which these lymphocytes were derived. It also is found on monocytes and dendritic cells. Further, it is found within the male genital tract and is present on the surface of mature sperm cells. CD52 is a peptide of 12 amino acids, anchored to glycosylphosphatidylinositol (GPI). Since it is highly negatively charged and present on sperm cells and lymphocytes, it has been conjectured that its function is anti-adhesion, allowing cells to freely move around. CD52 binds the ITIM (immunoreceptor tyrosine-based inhibitory motif)-bearing sialic acid-binding lectin SIGLEC10.
Background References
1. Kasarello K et al. Anti-CD52 Therapy for Multiple Sclerosis: An Update in the COVID Era. Immunotargets Ther. 2021
2. de Vos-Hillebrand L et al. CD52 mRNA expression predicts prognosis and response to immune checkpoint blockade in melanoma. Pigment Cell Melanoma Res. 2024 Mar
Western blot analysis of CD52 on different lysates with Rabbit anti-CD52 antibody (HA722545) at 1/1,000 dilution.
Lane 1: Mouse spleen tissue lysate Lane 2: Mouse thymus tissue lysate Lane 3: Mouse liver tissue lysate (negative) Lane 4: Mouse kidney tissue lysate (negative) Lane 5: Mouse brain tissue lysate (negative)
Lysates/proteins at 20 µg/Lane.
Predicted band size: 8 kDa Observed band size: 16 kDa
Exposure time: 10 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA722545) at 1/1,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
Flow cytometric analysis of mouse spleen cells labelling CD52 (HA722545).
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