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Purified Rat Anti-Mouse CD44
Product Details
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BD Pharmingen™
Pgp-1; Ly-24; H-CAM; HERMES; ECMR-III; Hyaluronate Receptor
Mouse (QC Testing)
Rat IgG2b, κ
Dexamethasone-induced, SJL mouse spontaneous myeloid leukemia M1 cells myeloid leukemia M1
Flow cytometry (Routinely Tested), Blocking, Cytotoxicity, ELISA, Immunohistochemistry-frozen, Immunohistochemistry-paraffin, Immunoprecipitation, Induction, Inhibition, Radioimmunoassay (Reported)
0.5 mg/ml
12505
Aqueous buffered solution containing ≤0.09% sodium azide.
RUO


Preparation And Storage

The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. Store undiluted at 4°C.

Recommended Assay Procedures

Recommended Assay Procedure:

For IHC, we recommend the use of purified IM7 mAb in our special formulation for immunohistochemistry, Cat. No. 550538. The alternative anti-mouse CD44 mAb KM114 (Cat. No. 558739) has been reported to be effective for western blot analysis and blocking of hyaluronan binding.

Product Notices

  1. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
  2. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
  3. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
553131 Rev. 18
Antibody Details
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IM7

The IM7 antibody specifically recognizes an epitope on both alloantigens and all isoforms of the CD44 glycoprotein (Pgp-1, Ly-24). The standard form of CD44, lacking variable exons and referred to as CD44H or CD44s, is widely expressed on hematopoietic and non-hematopoietic cells. CD44 isoforms encoded by variable exons are expressed on epithelial cells, but only at low levels on most leukocytes. Mice with the Ly-24.1 alloantigen (e.g., BALB/c, CBA/J, DBA/1, DBA/2) have relatively large subsets of CD44H+ T lymphocytes, while Ly-24.2 strains (e.g., A, AKR, CBA/N, C3H/He, C57BL, C57BR, C57L, C58, NZB, SJL, SWR, 129) have fewer CD44H+ T cells. CD44 is a cell adhesion receptor, and its principal ligand, hyaluronate, is a common component of extracellular matrices. Differential glycosylation of CD44 influences its binding to hyaluronate.  Additional ligands include the cell surface form of CD74 and the cytokine osteopontin (Eta-1). Bone marrow- and thymus-derived progenitor cells capable of repopulating the thymus express CD44. In the periphery, the level of CD44 expression increases upon activation of B lymphocytes, CD4+ T cells, and CD8+ T cells; memory cells can be recognized by their CD44[hi] phenotype. The IM7 mAb inhibits established collagen-induced arthritis in DBA/1 mice. Moreover, it prevents CNS inflammation and clinical symptoms of experimental autoimmune encephalomyelitis. In contrast, the same antibody exacerbates experimental autoimmune thyroiditis in CBA/J mice. The IM7 mAb recognizes a different epitope from that recognized by mAb KM114, and the antibody pair can be used in ELISA to detect soluble CD44. It has been observed that IM7 antibody crossreacts with human, dog, cat, horse, cow, and pig leukocytes. Anti-human CD44, clone G44-26, and IM7 antibody compete for binding to human peripheral blood lymphocytes.

This antibody is routinely tested by flow cytometric analysis. Other applications were tested at BD Biosciences Pharmingen during antibody development only or reported in the literature.

553131 Rev. 18
Format Details
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Purified
Tissue culture supernatant is purified by either protein A/G or affinity purification methods. Both methods yield antibody in solution that is free of most other soluble proteins, lipids, etc. This format provides pure antibody that is suitable for a number of downstream applications including: secondary labeling for flow cytometry or microscopy, ELISA, Western blot, etc.
Purified
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Citations & References
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Development References (24)

  1. Bendelac A. Mouse NK1+ T cells. Curr Opin Immunol. 1995; 7(3):367-374. (Biology). View Reference
  2. Brocke S, Piercy C, Steinman L, Weissman IL, Veromaa T. Antibodies to CD44 and integrin alpha4, but not L-selectin, prevent central nervous system inflammation and experimental encephalomyelitis by blocking secondary leukocyte recruitment. Proc Natl Acad Sci U S A. 1999; 96(12):6896-6901. (Clone-specific: Blocking). View Reference
  3. Budd RC, Cerottini JC, Horvath C, et al. Distinction of virgin and memory T lymphocytes. Stable acquisition of the Pgp-1 glycoprotein concomitant with antigenic stimulation. J Immunol. 1987; 138(10):3120-3129. (Clone-specific: Immunoprecipitation). View Reference
  4. Camp RL, Scheynius A, Johansson C, Pure E. CD44 is necessary for optimal contact allergic responses but is not required for normal leukocyte extravasation. J Exp Med. 1993; 178(2):497-507. (Clone-specific: Induction, Inhibition, Radioimmunoassay). View Reference
  5. Godfrey DI, Kennedy J, Suda T, Zlotnik A. A developmental pathway involving four phenotypically and functionally distinct subsets of CD3-CD4-CD8- triple-negative adult mouse thymocytes defined by CD44 and CD25 expression. J Immunol. 1993; 150(10):4244-4252. (Biology). View Reference
  6. Hathcock KS, Hirano H, Murakami S, Hodes RJ. CD44 expression on activated B cells. Differential capacity for CD44-dependent binding to hyaluronic acid. J Immunol. 1993; 151(12):6712-6722. (Biology). View Reference
  7. Hyman R, Lesley J, Schulte R, Trotter J. Progenitor cells in the thymus: most thymus-homing progenitor cells in the adult mouse thymus bear Pgp-1 glycoprotein but not interleukin-2 receptor on their cell surface. Cell Immunol. 1986; 101(2):320-327. (Biology). View Reference
  8. Ikawa T, Kawamoto H, Fujimoto S, Katsura Y. Commitment of common T/natural killer (NK) progenitors to unipotent T and NK progenitors in the murine fetal thymus revealed by a single progenitor assay. J Exp Med. 1999; 190(11):1617-1625. (Biology). View Reference
  9. Katoh S, McCarthy JB, Kincade PW. Characterization of soluble CD44 in the circulation of mice. Levels are affected by immune activity and tumor growth. J Immunol. 1994; 153(8):3440-3449. (Clone-specific: ELISA). View Reference
  10. Katoh S, Zheng Z, Oritani K, Shimozato T, Kincade PW. Glycosylation of CD44 negatively regulates its recognition of hyaluronan. J Exp Med. 1995; 182(2):419-429. (Clone-specific: Blocking, Western blot). View Reference
  11. Lesley J, Hyman R, Kincade PW. CD44 and its interaction with extracellular matrix. Adv Immunol. 1993; 54:271-335. (Biology). View Reference
  12. Lesley J, Trowbridge IS. Genetic characterization of a polymorphic murine cell-surface glycoprotein. Immunogenetics. 1982; 15(3):313-320. (Immunogen). View Reference
  13. Lynch F, Ceredig R. Mouse strain variation in Ly-24 (Pgp-1) expression by peripheral T cells and thymocytes: implications for T cell differentiation. Eur J Immunol. 1989; 19(2):223-229. (Biology). View Reference
  14. MacDonald HR, Budd RC, Cerottini JC. Pgp-1 (Ly 24) as a marker of murine memory T lymphocytes. Curr Top Microbiol Immunol. 1990; 159:97-109. (Biology). View Reference
  15. Matsumoto G, Nghiem MP, Nozaki N, Schmits R, Penninger JM. Cooperation between CD44 and LFA-1/CD11a adhesion receptors in lymphokine-activated killer cell cytotoxicity. J Immunol. 1998; 160(12):5781-5789. (Biology). View Reference
  16. Naor D, Sionov RV, Ish-Shalom D. CD44: structure, function, and association with the malignant process. Adv Cancer Res. 1997; 71:241-319. (Biology). View Reference
  17. Naujokas MF, Morin M, Anderson MS, Peterson M, Miller J. The chondroitin sulfate form of invariant chain can enhance stimulation of T cell responses through interaction with CD44. Cell. 1993; 74(2):257-268. (Biology). View Reference
  18. Nedvetzki S, Walmsley M, Alpert E, Williams RO, Feldmann M, Naor D. CD44 involvement in experimental collagen-induced arthritis (CIA). J Autoimmun. 1999; 13(1):39-47. (Clone-specific: Blocking). View Reference
  19. Parish NM, Brennan FR, Cooke A. Anti-CD44 treatment does not prevent the extravasation of autopathogenic T cells to the thyroid in experimental autoimmune thyroiditis. Immunology. 1999; 97(3):533-539. (Clone-specific: Blocking). View Reference
  20. Spangrude GJ, Klein J, Heimfeld S, Aihara Y, Weissman IL. Two monoclonal antibodies identify thymic-repopulating cells in mouse bone marrow. J Immunol. 1989; 142(2):425-430. (Biology). View Reference
  21. Trowbridge IS, Lesley J, Schulte R, Hyman R, Trotter J. Biochemical characterization and cellular distribution of a polymorphic, murine cell-surface glycoprotein expressed on lymphoid tissues. Immunogenetics. 1982; 15:299-312. (Immunogen: Cytotoxicity, Immunoprecipitation). View Reference
  22. Vremec D, Zorbas M, Scollay R, et al. The surface phenotype of dendritic cells purified from mouse thymus and spleen: investigation of the CD8 expression by a subpopulation of dendritic cells. J Exp Med. 1992; 176(1):47-58. (Biology). View Reference
  23. Weber GF, Ashkar S, Glimcher MJ, Cantor H. Receptor-ligand interaction between CD44 and osteopontin (Eta-1). Science. 1996; 271(5248):509-512. (Biology). View Reference
  24. Weiss JM, Sleeman J, Renkl AC, et al. An essential role for CD44 variant isoforms in epidermal Langerhans cell and blood dendritic cell function. J Cell Biol. 1997; 137(5):1137-1147. (Clone-specific: Inhibition). View Reference
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