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Home > Antibodies > Anti-Human Antibodies (In Vivo) > Anti-Human CD8a Monoclonal Antibodies

Anti-Human CD8a Monoclonal Antibodies

cluster of differentiation 8, leu-2, T8

Catalog No. Product Name Size List Price (US$) Quantity
PA007388.m2a In vivo Grade Recombinant Anti-human CD8a Monoclonal Antibody (Clone: OKT8), Mouse IgG2a Kappa 1 mg 150.00
PA007388.m2a In vivo Grade Recombinant Anti-human CD8a Monoclonal Antibody (Clone: OKT8), Mouse IgG2a Kappa 5 mg 350.00
PA007388.m2a In vivo Grade Recombinant Anti-human CD8a Monoclonal Antibody (Clone: OKT8), Mouse IgG2a Kappa 25 mg 900.00
Description

PA007388.m2a: In vivo Grade Recombinant Anti-human CD8a Monoclonal Antibody, Mouse IgG2a Kappa (Clone: OKT8)

Recombinant mouse IgG2a Monoclonal Antibody. 
Clone: OKT8.
Isotype: Mouse IgG2a kappa.
Source: The anti-human CD8a monoclonal antibody (clone: OKT8) was produced in mammalian cells.
Specificity/Sensitivity: The in vivo grade recombinant mouse monoclonal antibody (clone: OKT8) specifically binds to human CD8a.
Applications: ELISA, flow cytometry, neutralization, functional assays such as bioanalytical PK and ADA assays, and those assays for studying biological pathways affected by the human CD8 protein. 
Form of Antibody: 0.2 uM filtered solution, pH 7.4, no stabilizers or preservatives.
Endotoxin: < 1 EU per 1 mg of the protein by the LAL method.
Purity: >95% by SDS-PAGE under reducing conditions.

Shipping: The antibody is shipped with ice pack. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70°C as supplied.
1 month from date of receipt, 2 to 8°C as supplied.

Background

The recombinant OKT8 antibody binds to the human CD8 protein (cluster of differentiation 8), a type I transmembrane glycoprotein and the co-receptor for the T-cell receptor (TCR). Along with the TCR, the CD8 co-receptor plays a role in T cell signaling and aiding with cytotoxic T cell-antigen interactions. The CD8 protein is predominantly expressed on the surface of cytotoxic T cells, but can also be found on natural killer cells, cortical thymocytes, and dendritic cells. The CD8 molecule is a marker for cytotoxic T cell population.

References of Anti-Human CD8a Monoclonal Antibody (Clone: OKT8)

Tomana, M., et al. J Clin Invest. 1987 Jan;79(1):257-64. doi: 10.1172/JCI112792. PMID: 3793925
The OKT8 antibody (anti-human CD8a) was used to identify and deplete OKT8+ suppressor T cells in serum from patients with steroid-responsive nephrotic syndrome. OKT8 depletion eliminated soluble immune response suppressor (SIRS) activity, confirming its production by OKT8+ cells, which was inhibited by steroids both in vitro and in vivo.
(Tags: anti-human CD8a OKT8; anti-human CD8a OKT8 mAb)
Gascon, P., et al. N Engl J Med. 1985 Jan 31;312(5):257-65. doi: 10.1056/NEJM198501313120501. PMID: 2981406
The OKT8 antibody (anti-human CD8a) identified activated suppressor T lymphocytes in aplastic anemia patients via flow cytometry. OKT8 depletion restored hematopoiesis in vitro, and in vivo OKT8+ cell counts correlated with disease severity, with targeted treatment improving outcomes in some patients.
(Tags: anti-human CD8a OKT8 antibody in vivo; anti-human CD8a OKT8 in animal model)
Bagby, G. C. Jr., et al. Blood. 1984 Feb;63(2):356-63. PMID: 6229296
The OKT8 antibody (anti-human CD8a) identified OKT8+ T lymphocytes that inhibited committed stem cell proliferation in a contact-independent manner. OKT8 depletion enhanced stem cell growth in culture, suggesting a regulatory role for OKT8+ cells in myelopoiesis in vivo.
(Tags: anti-human CD8a OKT8 mAb in animal model; anti-human CD8a OKT8 in cancer research)
Rola-Pleszczynski, M., et al. J Clin Invest. 1984 May;73(5):1334-40. doi: 10.1172/JCI111338. PMID: 6090503
The OKT8 antibody (anti-human CD8a) identified radiosensitive OKT8+ suppressor cells induced by leukotriene B4 from OKT8- T cells. These cells suppressed B cell differentiation and immunoglobulin production in vivo, with OKT8 used to confirm the suppressor cell phenotype in flow cytometry assays.
(Tags: anti-human CD8a OKT8 antibody; bioactivity of anti-human CD8a OKT8)
Hayward, A. R., et al. Clin Exp Immunol. 1981 Sep;45(3):468-74. PMID: 6461445
The OKT8 antibody (anti-human CD8a) identified increased OKT8+ suppressor cells in PWM-stimulated newborn lymphocyte cultures. OKT8 depletion with complement or 50 microM deoxyguanosine reduced suppressor activity, indicating that OKT8+ cell proliferation is required for suppression, with implications for neonatal tolerance in vivo.
(Tags: anti-CD8a clone OKT8; OKT8 anti-human CD8a antibody)
For more technical references or data sheets regarding the Recombinant Anti-Human CD8a Monoclonal Antibody (Clone: OKT8) formats, please contact our scientific support team at message@sydlabs.com.

Syd Labs provides the following recombinant anti-human CD8a monoclonal antibodies:
In vivo grade recombinant anti-human CD8a antibodies (clone OKT8)
Recombinant anti-human CD8a antibodies (clone OKT8) for flow cytometry

Syd Labs provides the following recombinant anti-mouse CD8a monoclonal antibodies:
In vivo grade recombinant anti-mouse CD8a antibodies (clone 2.43)
In vivo grade recombinant anti-mouse CD8a antibodies (clone YTS 169.4)
In vivo grade recombinant anti-mouse CD8a antibodies (clone YTS 105.18)

Syd Labs provides the following recombinant anti-mouse CD8b monoclonal antibodies:
In vivo grade recombinant anti-mouse CD8b antibodies (clone YTS 156.7)

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