Anti-Mouse CD24 (Clone M1/69) – Dylight® 650

This DyLight® 650 conjugate is formulated in 0.01 M phosphate buffered saline (150 mM NaCl) PBS pH 7.4, 1% BSA and 0.09% sodium azide as a preservative.

Functional grade preclinical antibodies are manufactured in an animal free facility using only in vitro protein free cell culture techniques and are purified by a multi-step process including the use of protein A or G to assure extremely low levels of endotoxins, leachable protein A or aggregates.

This DyLight® 650 conjugate is stable when stored at 2-8°C. Do not freeze.

Red Laser (652 nm)

IHC^{29, 31},
IF^{29, 30},
IF Microscopy^29,
IP18

Anti-CD24 antibody (clone M1/69) activity is directed against mouse CD24, also known as Heat Stable Antigen (HSA) or Ly-52.

Mouse CD24 is a small 27 amino acid sialoglycoprotein that is anchored to plasma membranes via a glycosyl-phosphatidylinositol linker¹. CD24 is widely distributed and plays a role in many diverse functions including adaptive immunity, inflammation, autoimmunity, and cancer^1,2. CD24 modulates growth and differentiation signals to granulocytes and B cells, is required for homeostatic cell renewal, binds to P-selectin on activated endothelial cells, plays a role in cell adhesion³, lymphocyte proliferation for homeostatic purposes⁴, lymphocyte costimulation via CD28-independent pathways⁵ as well as a crucial role in cell selection and maturation during hematopoiesis.

CD24 tends to be expressed more abundantly in progenitor cells and metabolically active cells relative to terminally differentiated cells². For example, CD24 is expressed on B-cell progenitors and mature resting B cells, but not terminally differentiated plasma cells. Similarly, CD24 is abundantly expressed on immature T cells and activated T cells but weakly expressed on peripheral T cells. As such, CD24 is used as a marker for the differentiation of hematopoietic and neuronal cells as well as tumor stem cells.

In humans, CD24 is overexpressed in various malignancies and its downregulation reduces cell tumorgenicity⁶. When CD24 is expressed early during carcinogenesis and blocked with monoclonal antibodies or small interfering RNA, tumor growth in xenograft mouse models is reduced.

M1/69 was generated by fusing the spleen cells of a DA rat immunized with B10 mouse spleen cells enriched for T cells with cells from a nonsecreting mouse myeloma line (NSI)⁷.

CD24 is expressed on B cells, T cells, neutrophils, eosinophils, macrophages, neural cells, ganglion cells, keratinocytes, muscle cells, pancreas cells, lymphocytes, granulocytes, epithelial cells, thymocytes, monocytes, erythrocytes, dendritic cells and is overexpressed in many cancers. Expression varies during T and B cell differentiation. Peripheral T cells are mainly negative.

P-selectin, CD24

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