CD66b antibodies, human

CD66b antibodies, human

Clone: REA306 | Dilution: 1:50
Clone REA306 recognizes the human CD66b antigen, a glycosylphosphatidylinositol (GPI)–linked protein, which is also known as carcinoembryonic antigen-related cell adhesion molecule 8 (CEACAM8). CD66b is exclusively expressed on neutrophils and eosinophils and on leukocytes of chronic myeloid leukemia patients and bone marrow. Under normal conditions, neutrophils have minimal expression of CD66b, but incubation
in vitro
with inflammatory agonists rapidly increases this expression. Furthermore, expression of CD66b in eosinophils is enhanced
in vivo
in patients with a helminth infection, specifically with
Schistosoma mansoni
. The eosinophil expression of CD66b is also enhanced
in vitro
by incubation with activated lymphocytes or by brief incubation with interleukin 5 (IL-5). Crosslinking of CD66b on peripheral blood neutrophils mediates the release of IL-8 from intracellular storage.
Additional information: Clone REA306 displays negligible binding to Fc receptors.

Alternative names

CEACAM8, CD67, CGM6, NCA-95

Technical specifications

  • Antigen: CD66b
  • Clone: REA306
  • Isotype: recombinant human IgG1
  • Isotype control: REA Control (S) antibodies
  • Alternative names of antigen: CEACAM8, CD67, CGM6, NCA-95
  • Entrez Gene ID: 1088
  • Molecular mass of antigen [kDa]: 32
  • Distribution of antigen: eosinophils, neutrophils, bone marrow, other
  • Product format: Reagents are supplied in buffer containing stabilizer and 0.05% sodium azide.
  • Fixation: Cells should be stained prior to fixation, if formaldehyde is used as a fixative.
  • Storage: Store protected from light at 2–8 °C. Do not freeze.
  • Available conjugates: APC, Biotin, PE-Vio770, APC-Vio770, FITC
  • Selected references

    1. Yoon, J. et al. (2007) CD66b regulates adhesion and activation of human eosinophils. J. Immunol. 179(12): 8454-8462
    2. Molgora, M. et al. (2017) IL-1R8 is a checkpoint in NK cells regulating anti-tumour and anti-viral activity. Nature 551(7678)
    3. Eades-Perner, A. M. et al. (1998) Mice transgenic for the human CGM6 gene express its product, the granulocyte marker CD66b, exclusively in granulocytes. Blood 91(2): 663-672
    4. Berling, B. et al. (1990) Cloning of a carcinoembryonic antigen gene family member expressed in leukocytes of chronic myeloid leukemia patients and bone marrow. Cancer Res. 50(20): 6534-6539
    5. Pearl, M. L. et al. (2014) Prognostic analysis of invasive circulating tumor cells (iCTCs) in epithelial ovarian cancer. Gynecol. Oncol. 134: 581
    6. Abujarour, R. et al. (2013) Hemodialysis-related changes in phenotypical features of monocytes. Sci. Rep. 8 (1)(9): 1179

REAfinity clone is tested against different known clones, in a blocking experiment, to identify whether they recognize completely overlapping (++), partially overlapping (+), or completely different epitopes (-). In a blocking experiment, cells are incubated with an excess of purified unconjugated REAfinity clone followed by staining with conjugated form of the other known clones. 

Other clonesOverlap in epitope recognition with REA306
G10F5++
80H3-
Product options: 10
130-117-804

CD66b-APC, human

for 30
tests
(1)
-
130-117-692

CD66b-APC, human

for 100
tests
(1)
-
130-119-160

CD66b-Biotin, human

for 30
tests
(1)
-
130-118-983

CD66b-Biotin, human

for 100
tests
(1)
-
130-119-808

CD66b-PE-Vio770, human

for 30
tests
(1)
-
130-119-768

CD66b-PE-Vio770, human

for 100
tests
(1)
-
130-120-146

CD66b-APC-Vio770, human

for 30
tests
(1)
-
130-120-060

CD66b-APC-Vio770, human

for 100
tests
(1)
-
130-123-937

CD66b-FITC, human

for 30
tests
(1)
-
130-123-694

CD66b-FITC, human

for 100
tests
(1)
-