Invitrogen

CD8a Monoclonal Antibody (OKT8 (OKT-8)), FITC, eBioscience™

FIGURE: 1 / 17

CD8a Antibody (11-0086-42) in Flow

Normal human peripheral blood cells were stained with CD19 Monoclonal Antibody, APC (Product # 17-0199-42) and Mouse IgG2a kappa Isotype Control, FITC (Product # 11-4724-82) (left) or CD8a Monoclonal Antibody, FITC (right). Cells in the lymphocyte gate were used for analysis.

CD8a Antibody in Immunocytochemistry (ICC/IF)

CD8a Antibody in Immunoprecipitation (IP)

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Product Details

11-0086-42

Applications

Tested Dilution

Publications

Immunocytochemistry (ICC/IF)

View 2 publications 2 publications

Flow Cytometry (Flow)

5 µL (0.06 µg)/test

View 19 publications 19 publications

Immunoprecipitation (IP)

View 1 publication 1 publication

Product Specifications

Species Reactivity

Human

Published species

Human, Mouse

Host/Isotype

Mouse / IgG2a, kappa

Recommended Isotype Control

Mouse IgG2a kappa Isotype Control (eBM2a), FITC, eBioscience™

Class

Monoclonal

Type

Antibody

Clone

OKT8 (OKT-8)

Conjugate

FITC FITC FITC

Excitation/Emission Max

498/517 nm View spectra

Form

Liquid

Concentration

5 µL/Test

Purification

Affinity chromatography

Storage buffer

PBS, pH 7.2, with 0.2% BSA

Contains

0.09% sodium azide

Storage conditions

4° C, store in dark, DO NOT FREEZE!

Shipping conditions

Ambient (domestic); Wet ice (international)

RRID

AB_10598521

Product Specific Information

Description: The OKT8 monoclonal antibody reacts with the human CD8a molecule, an approximately 32-34 kDa cell surface receptor expressed either as a heterodimer with the CD8 beta chain (CD8 alpha beta) or as a homodimer (CD8 alpha alpha). A majority of thymocytes and a subpopulation of mature T cells and NK cells express CD8a. CD8 binds to MHC class I and through its association with protein tyrosine kinase p56lck plays a role in T-cell development and activation of mature T cells. Preliminary testing indicates that OKT8 and two other mouse anti-human CD8 antibodies (clone RPA-T8, Product # 14-0088 and clone HIT8a, Product # 14-0089) do not compete with each other for binding to human peripheral blood leukocytes by flow cytometric analysis, suggesting that they do not bind to similar epitopes or block each other by steric hindrance.

Applications Reported: This OKT8 (OKT-8) antibody has been reported for use in flow cytometric analysis.

Applications Tested: This OKT8 (OKT-8) antibody has been pre-titrated and tested by flow cytometric analysis of normal human peripheral blood cells. This can be used at 5 µL (0.06 µg) per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test.

Excitation: 488 nm; Emission: 520 nm; Laser: Blue Laser.

Filtration: 0.2 µm post-manufacturing filtered.

Target Information

Cluster of differentiation 8 (CD8), a type I transmembrane glycoprotein of the immunoglobulin family of receptors, plays an integral role in signal transduction, and T cell differentiation and activation. CD8 is predominantly expressed on T cells as a disulfide-linked heterodimer of CD8alpha and CD8beta, where it functions as a co-receptor, along with T cell receptor (TCR), for major histocompatibilty complex class I (MHC-I) molecules; whereas its counterpart, CD4, acts as a co-receptor for MHC-II molecules. CD8 exists on the cell surface, where the CD8alpha chain is essential for binding to MHC-I. CD8 is also expressed on a subset of T cells, NK cells, monocytes and dendritic cells as disulfide-linked homodimers of CD8alpha. Ligation of MHC-I/peptide complexes presented by antigen-presenting cells (APCs), triggers the recruitment of lymphocyte-specific protein tyrosine kinase (Lck), which leads to lymphokine production, motility and cytotoxic T lymphocyte (CTL) activation. Once activated, CTLs play a crucial role in the clearance of pathogens and tumor cells. Differentiation of naive CD8+ T cells into CTLs is strongly enhanced by IL-2, IL-12 and TGF-beta1.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.

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Product References

Myod1 and GR coordinate myofiber-specific transcriptional enhancers.

Nucleic acids research

Rovito D,Rerra AI,Ueberschlag-Pitiot V,Joshi S,Karasu N,Dacleu-Siewe V,Rayana KB,Ghaibour K,Parisotto M,Ferry A,Jelinsky SA,Laverny G,Klaholz BP,Sexton T,Billas IML,Duteil D,Metzger D

11-0086 was used in Flow cytometry/Cell sorting to investigate the skeletal muscle transcriptional program and identified key tissue-specific regulatory genetic elements.

Fri May 07 00:00:00 EDT 2021

Single-cell RNA sequencing reveals ex vivo signatures of SARS-CoV-2-reactive T cells through 'reverse phenotyping'.

Nature communications

Fischer DS,Ansari M,Wagner KI,Jarosch S,Huang Y,Mayr CH,Strunz M,Lang NJ,D'Ippolito E,Hammel M,Mateyka L,Weber S,Wolff LS,Witter K,Fernandez IE,Leuschner G,Milger K,Frankenberger M,Nowak L,Heinig-Menhard K,Koch I,Stoleriu MG,Hilgendorff A,Behr J,Pichlmair A,Schubert B,Theis FJ,Busch DH,Schiller HB,Schober K

Published figure using CD8a monoclonal antibody (Product # 11-0086-42) in Flow Cytometry

Mon Jul 26 00:00:00 EDT 2021

Clinical significance of CD38 and CD101 expression in PD-1⁺CD8⁺ T cells in patients with epithelial ovarian cancer.

Oncology letters

Zhou J,Wang W,Liang Z,Ni B,He W,Wang D

11-0086 was used in Flow cytometry/Cell sorting to show diagnosis of epithelial OC may be achieved by detecting co-expression of CD38 and CD101 in peripheral PD-1+CD8+ T cells.

Wed Jul 01 00:00:00 EDT 2020

T-Lymphocyte Subset Distribution and Activity in Patients With Glaucoma.

Investigative ophthalmology & visual science

Yang X,Zeng Q,Göktas E,Gopal K,Al-Aswad L,Blumberg DM,Cioffi GA,Liebmann JM,Tezel G

Published figure using CD8a monoclonal antibody (Product # 11-0086-42) in Flow Cytometry

Fri Mar 01 00:00:00 EST 2019

Disruption of PD-1 Enhanced the Anti-tumor Activity of Chimeric Antigen Receptor T Cells Against Hepatocellular Carcinoma.

Frontiers in pharmacology

Guo X,Jiang H,Shi B,Zhou M,Zhang H,Shi Z,Du G,Luo H,Wu X,Wang Y,Sun R,Li Z

11-0086 was used in Immunocytochemistry to indicate the enhanced anti-tumor efficacy of PD-1-deficient chimeric antigen receptor T cells against hepatocellular carcinoma.

Thu Sep 28 00:00:00 EDT 2023

Disruption of PD-1 Enhanced the Anti-tumor Activity of Chimeric Antigen Receptor T Cells Against Hepatocellular Carcinoma.

Frontiers in pharmacology

Guo X,Jiang H,Shi B,Zhou M,Zhang H,Shi Z,Du G,Luo H,Wu X,Wang Y,Sun R,Li Z

11-0086 was used in Immunocytochemistry to indicate the enhanced anti-tumor efficacy of PD-1-deficient chimeric antigen receptor T cells against hepatocellular carcinoma.

Thu Sep 28 00:00:00 EDT 2023

Extensive T cell cross-reactivity between diverse seasonal influenza strains in the ferret model.

Scientific reports

Reber AJ,Music N,Kim JH,Gansebom S,Chen J,York I

Published figure using CD8a monoclonal antibody (Product # 11-0086-42) in Flow Cytometry

Tue Apr 17 00:00:00 EDT 2018

CD3xPDL1 bi-specific T cell engager (BiTE) simultaneously activates T cells and NKT cells, kills PDL1⁺ tumor cells, and extends the survival of tumor-bearing humanized mice.

Oncotarget

Horn LA,Ciavattone NG,Atkinson R,Woldergerima N,Wolf J,Clements VK,Sinha P,Poudel M,Ostrand-Rosenberg S

11-0086 was used in Flow cytometry/Cell sorting to suggest that the CD3xPDL1 BiTE may be efficacious for patients with PDL1(+) solid tumors, in combination with other immunotherapies that do not specifically neutralize PD1 pathway-mediated immune suppression.

Tue Aug 29 00:00:00 EDT 2017

CD3xPDL1 bi-specific T cell engager (BiTE) simultaneously activates T cells and NKT cells, kills PDL1⁺ tumor cells, and extends the survival of tumor-bearing humanized mice.

Oncotarget

Horn LA,Ciavattone NG,Atkinson R,Woldergerima N,Wolf J,Clements VK,Sinha P,Poudel M,Ostrand-Rosenberg S

Tue Aug 29 00:00:00 EDT 2017

Resolving TYK2 locus genotype-to-phenotype differences in autoimmunity.

Science translational medicine

Dendrou CA,Cortes A,Shipman L,Evans HG,Attfield KE,Jostins L,Barber T,Kaur G,Kuttikkatte SB,Leach OA,Desel C,Faergeman SL,Cheeseman J,Neville MJ,Sawcer S,Compston A,Johnson AR,Everett C,Bell JI,Karpe F,Ultsch M,Eigenbrot C,McVean G,Fugger L

11-0086 was used in Flow cytometry/Cell sorting to reveal a protective homozygous effect that defined a signalling optimum between autoimmunity and immunodeficiency and identified TYK2 as a potential drug target for autoimmune disorders.

Wed Nov 02 00:00:00 EDT 2016

PD-L1 expression and prognostic impact in glioblastoma.

Neuro-oncology

Nduom EK,Wei J,Yaghi NK,Huang N,Kong LY,Gabrusiewicz K,Ling X,Zhou S,Ivan C,Chen JQ,Burks JK,Fuller GN,Calin GA,Conrad CA,Creasy C,Ritthipichai K,Radvanyi L,Heimberger AB

Mon Feb 01 00:00:00 EST 2016

Expression of the galectin-9-Tim-3 pathway in glioma tissues is associated with the clinical manifestations of glioma.

Oncology letters

Liu Z,Han H,He X,Li S,Wu C,Yu C,Wang S

Published figure using CD8a monoclonal antibody (Product # 11-0086-42) in Flow Cytometry

Tue Mar 01 00:00:00 EST 2016

Increased circulating IL-9-producing CD8⁺ T cells are associated with eosinophilia and high FeNO in allergic asthmatics.

Experimental and therapeutic medicine

Wang W,Cheng ZS,Chen YF,Lin YH

Thu Dec 01 00:00:00 EST 2016

Structure and Membrane Binding Properties of the Endosomal Tetratricopeptide Repeat (TPR) Domain-containing Sorting Nexins SNX20 and SNX21.

The Journal of biological chemistry

Clairfeuille T,Norwood SJ,Qi X,Teasdale RD,Collins BM

Published figure using CD8a monoclonal antibody (Product # 11-0086-42) in Immunoprecipitation

Fri Jun 05 00:00:00 EDT 2015

Structure and Membrane Binding Properties of the Endosomal Tetratricopeptide Repeat (TPR) Domain-containing Sorting Nexins SNX20 and SNX21.

The Journal of biological chemistry

Clairfeuille T,Norwood SJ,Qi X,Teasdale RD,Collins BM

Published figure using CD8a monoclonal antibody (Product # 11-0086-42) in Immunoprecipitation

Fri Jun 05 00:00:00 EDT 2015

PD-1, PD-L1 and PD-L2 Gene Expression on T-Cells and Natural Killer Cells Declines in Conjunction with a Reduction in PD-1 Protein during the Intensive Phase of Tuberculosis Treatment.

PloS one

Hassan SS,Akram M,King EC,Dockrell HM,Cliff JM

11-0086 was used in Flow cytometry/Cell sorting to study PD-1 protein expression on the surface of various immune cells from tuberculosis patients.

Tue May 24 00:00:00 EDT 2016

Children with asthma by school age display aberrant immune responses to pathogenic airway bacteria as infants.

The Journal of allergy and clinical immunology

Larsen JM,Brix S,Thysen AH,Birch S,Rasmussen MA,Bisgaard H

11-0086 was used in Flow cytometry/Cell sorting to assess the immune responses to pathogen bacteria in children suffering from asthma.

Tue Apr 01 00:00:00 EDT 2014

TL1A increases expression of CD25, LFA-1, CD134 and CD154, and induces IL-22 and GM-CSF production from effector CD4 T-cells.

PloS one

Reichwald K,Jørgensen TZ,Skov S

Published figure using CD8a monoclonal antibody (Product # 11-0086-42) in Flow Cytometry

Tue Nov 10 00:00:00 EST 2015

CCL20 Secretion from the Nucleus Pulposus Improves the Recruitment of CCR6-Expressing Th17 Cells to Degenerated IVD Tissues.

PloS one

Zhang W,Nie L,Wang Y,Wang XP,Zhao H,Dongol S,Maharjan S,Cheng L

Published figure using CD8a monoclonal antibody (Product # 11-0086-42) in Flow Cytometry

Fri Oct 13 00:00:00 EDT 2017

MHC multimer-guided and cell culture-independent isolation of functional T cell receptors from single cells facilitates TCR identification for immunotherapy.

PloS one

Dössinger G,Bunse M,Bet J,Albrecht J,Paszkiewicz PJ,Weißbrich B,Schiedewitz I,Henkel L,Schiemann M,Neuenhahn M,Uckert W,Busch DH

Published figure using CD8a monoclonal antibody (Product # 11-0086-42) in Flow Cytometry

Mon Nov 11 00:00:00 EST 2013

Modulation of NKG2D expression in human CD8(+) T cells corresponding with tuberculosis drug cure.

PloS one

Hassan SS,Cho JE,Akram M,Fielding KL,Dockrell HM,Cliff JM

11-0086 was used in Flow cytometry/Cell sorting to study expression patterns of the co-stimulation molecule NKG2D in human tuberculosis and assess changes during treatment.

Wed Apr 02 00:00:00 EDT 2014

Vaccine

Zhou X,McElhaney JE

11-0086 was used in Flow cytometry/Cell sorting to suggest that the cytolytic activity of CD4+ T cells responding to influenza is preserved with ageing, while that of effector memory and effector CD8+ T cells becomes diminished.

Thu Mar 03 00:00:00 EST 2011

Discordance between antibody and T cell responses in recipients of trivalent inactivated influenza vaccine.

Vaccine

Co MD,Orphin L,Cruz J,Pazoles P,Rothman AL,Ennis FA,Terajima M

Published figure using CD8a monoclonal antibody (Product # 11-0086-42) in Flow Cytometry

Mon Apr 07 00:00:00 EDT 2008

Bioinformatics

Protein Aliases: CD8 antigen, alpha polypeptide (p32); CD8 antigen, beta polypeptide 1 (p37); CD8a; CD8alpha; CD8b; CD8beta; fCD8; Leu-2; leu-2a; Leu2 T-lymphocyte antigen; OKT8 T-cell antigen; T cell co-receptor; T lymphocyte surface glycoprotein beta chain; T-cell antigen Leu2; T-cell surface glycoprotein CD8 alpha chain; T-cell surface glycoprotein CD8 beta chain; T-lymphocyte differentiation antigen T8/Leu-2; T8 T-cell antigen

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Gene Aliases: CD8; CD8A; CD8B; CD8B1; LEU2; LY3; LYT3; MAL; p32; P37

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UniProt ID: (Human) P01732, (Human) P10966

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Entrez Gene ID: (Human) 925, (Human) 926

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Function(s)

protein binding coreceptor activity protein kinase binding MHC class I protein binding protein homodimerization activity defense/immunity protein immunoglobulin receptor superfamily

Process(es)

T cell mediated immunity immune response cell surface receptor signaling pathway transmembrane receptor protein tyrosine kinase signaling pathway antigen processing and presentation T cell activation cytotoxic T cell differentiation regulation of immune response positive regulation of calcium-mediated signaling defense response to virus adaptive immune response regulation of defense response to virus by virus

Performance Guarantee

If an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*

Learn more

CD8a Monoclonal Antibody (OKT8 (OKT-8)), FITC, eBioscience™

CD8a Antibody (11-0086-42) in Flow

Product Details

11-0086-42

Immunocytochemistry (ICC/IF)

Flow Cytometry (Flow)

Immunoprecipitation (IP)

Species Reactivity

Published species

Host/Isotype

Recommended Isotype Control

Class

Type

Clone

Conjugate

Excitation/Emission Max

Form

Concentration

Purification

Storage buffer

Contains

Storage conditions

Shipping conditions

RRID

Product Specific Information

Target Information

How to use the Panel Builder

Bioinformatics

Performance Guarantee

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