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AB237365

Alexa Fluor® 647 Anti-CD8 alpha 抗体 [EPR21769]

Alexa Fluor® 647 Anti-CD8 alpha antibody [EPR21769]

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(11 Publications)

Rabbit Recombinant Monoclonal CD8 alpha antibody - conjugated to Alexa Fluor® 647. Suitable for Flow Cyt, IHC-P and reacts with Mouse samples. Cited in 11 publications.

別名を表示する

CD8a, MAL, CD8A, T-cell surface glycoprotein CD8 alpha chain, T-lymphocyte differentiation antigen T8/Leu-2

2 Images
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Alexa Fluor® 647 Anti-CD8 alpha antibody [EPR21769] (AB237365)
  • IHC-P

Unknown

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Alexa Fluor® 647 Anti-CD8 alpha antibody [EPR21769] (AB237365)

IHC image of CD8 alpha staining in a section of formalin-fixed paraffin-embedded normal mouse spleen.

The section was pre-treated using heat mediated antigen retrieval with Tris/EDTA buffer (pH9, epitope retrieval solution 2) for 20mins, performed on a Leica BOND. Non-specific protein-protein interactions were then blocked in TBS containing 0.025% (v/v) Triton X-100, 0.3M (w/v) glycine and 1% (w/v) BSA for 1h at room temperature. The section was then incubated overnight at +4°C in TBS containing 0.025% (v/v) Triton X-100 and 1% (w/v) BSA with ab237365 at 1/100 dilution (shown in red). Nuclear DNA was labeled with DAPI (shown in blue). The section was then mounted using Fluoromount®.

Image was taken with a confocal microscope (Leica-Microsystems, TCS SP8).

For other IHC staining systems (automated and non-automated), customers should optimize variable parameters such as antigen retrieval conditions, antibody concentrations and incubation times.

Flow Cytometry - Alexa Fluor® 647 Anti-CD8 alpha antibody [EPR21769] (AB237365)
  • Flow Cyt

Unknown

Flow Cytometry - Alexa Fluor® 647 Anti-CD8 alpha antibody [EPR21769] (AB237365)

C57BL/6 mouse splenocytes stained with ab237365 (right) or Rabbit IgG Alexa Fluor® 647 (monoclonal) (left). C57BL/6 Mouse splenocytes were incubated for 30 mins on ice in 1x PBS containing 10 μg/ml anti CD16/32 antibody and 10% normal goat serum to block FC receptors and non-specific protein-protein interactions followed by the antibody (ab237365) or Rabbit IgG 647 Isotype (1x106 in 100 μl at 1 : 1000 (0.5 μg/ml)) for 30 mins on ice. The cells were simultaneously stained with CD4 PerCP conjugated antibody.

Acquisition of >50,000 events were collected using a 40 mW Red laser (640nm) and 670/14 bandpass filter. Events were gated on viable lymphocytes.

関連する標識済み抗体及び組成の異なる製品 (6)

  • 565 Alexa Fluor® 555

    Alexa Fluor® 555 Anti-CD8 alpha antibody [EPR21769]

  • 617 Alexa Fluor® 594

    Alexa Fluor® 594 Anti-CD8 alpha antibody [EPR21769]

  • 519 FITC

    FITC Anti-CD8 alpha antibody [EPR21769]

  • 660 APC

    APC Anti-CD8 alpha antibody [EPR21769]

  • 519 Alexa Fluor® 488

    Alexa Fluor® 488 Anti-CD8 alpha antibody [EPR21769]

  • 578 PE

    PE Anti-CD8 antibody [EPR21769]

Key facts

宿主種

Rabbit

クローン性

Monoclonal

クローン番号

EPR21769

アイソタイプ

IgG

標識

Alexa Fluor® 647

励起波長/蛍光波長

Ex: 650nm, Em: 665nm

キャリアフリー

No

交差種

Mouse

アプリケーション

IHC-P, Flow Cyt

applications

免疫原

The exact immunogen used to generate this antibody is proprietary information.

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "FlowCyt" : {"fullname" : "Flow Cytometry", "shortname":"Flow Cyt"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Mouse": { "FlowCyt-species-checked": "testedAndGuaranteed", "FlowCyt-species-dilution-info": "1/1000", "FlowCyt-species-notes": "<p></p>", "IHCP-species-checked": "testedAndGuaranteed", "IHCP-species-dilution-info": "1/100", "IHCP-species-notes": "<p></p>" } } }

製品の詳細

Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Alexa Fluor® is a registered trademark of Molecular Probes, Inc, a Thermo Fisher Scientific Company. The Alexa Fluor® dye included in this product is provided under an intellectual property license from Life Technologies Corporation. As this product contains the Alexa Fluor® dye, the purchase of this product conveys to the buyer the non-transferable right to use the purchased product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). As this product contains the Alexa Fluor® dye the sale of this product is expressly conditioned on the buyer not using the product or its components, or any materials made using the product or its components, in any activity to generate revenue, which may include, but is not limited to use of the product or its components: in manufacturing; (ii) to provide a service, information, or data in return for payment (iii) for therapeutic, diagnostic or prophylactic purposes; or (iv) for resale, regardless of whether they are sold for use in research. For information on purchasing a license to this product for purposes other than research, contact Life Technologies Corporation, 5781 Van Allen Way, Carlsbad, CA 92008 USA or outlicensing@thermofisher.com.

出荷温度及び保存条件

製品の状態
Liquid
精製方法
Affinity purification Protein A
バッファー組成
pH: 7.4 Preservative: 0.02% Sodium azide Constituents: PBS, 30% Glycerol (glycerin, glycerine), 1% BSA
出荷温度
Blue Ice
短期保存期間
1-2 weeks
短期保存温度
+4°C
長期保存温度
-20°C
分注に関する情報
Upon delivery aliquot
保管に関する情報
Avoid freeze / thaw cycle|Stable for 12 months at -20°C|Store in the dark

補足情報

This supplementary information is collated from multiple sources and compiled automatically.

CD8 alpha also known as CD8A or CD8 protein is a glycoprotein subunit expressed on the surface of cytotoxic T lymphocytes. It has a mass of approximately 32 kDa. Found on the surface cell membrane CD8 alpha functions primarily in the immune response specifically in the recognition of antigens bound to major histocompatibility complex (MHC) class I molecules. Often scientists use CD8 antibodies for detection and CD8 IHC or immunohistochemistry for localization studies.
Biological function summary

The CD8 alpha protein plays a critical role in T-cell mediated immune responses. It forms a heterodimer with the CD8 beta chain creating the CD8 alpha-beta complex that strengthens T-cell interaction with antigen-presenting cells. CD8 alpha also helps in signaling processes that activate T cells equipping them to destroy infected or malignant cells. Researchers often study CD8 alpha peptides to understand its interactions better.

Pathways

CD8 alpha is integral to the T-cell receptor signaling pathway and the cytotoxic T lymphocyte (CTL) pathway. The T-cell receptor complex which includes the CD8 molecule transmits signals that are important for T-cell activation and function. CD8 interacts with key proteins such as the T-cell receptor (TCR) and MHC class I molecules facilitating targeted responses against pathogens. These pathways highlight CD8 alpha’s role in adaptive immunity.

CD8 alpha is most prominently associated with viral infections and cancer. Conditions like HIV and some forms of leukemia show altered CD8 function highlighting the protein's role in immune surveillance. In HIV infection for instance CD8 T cells reduce in number impairing the immune response. CD8 alpha’s connection to the immune system places it alongside other immune proteins such as CD4 and MHC molecules in the context of immune dysfunction.

製品プロトコール

For this product, it's our understanding that no specific protocols are required. You can visit:

ターゲットの情報

The protein expressed by the gene CD8A is an integral membrane glycoprotein crucial for immune responses, operating mainly in T-cells as a coreceptor for MHC class I molecule : peptide complexes. These peptides originate from cytosolic proteins, unlike class II peptides, which are from extracellular proteins. CD8A interacts with the T-cell receptor (TCR) and MHC class I proteins on antigen-presenting cells, recruiting the Src kinase LCK to the TCR-CD3 complex. LCK phosphorylates substrates, triggering signaling pathways that lead to the production of lymphokines, enhanced motility, adhesion, and activation of cytotoxic T-lymphocytes (CTLs), thereby aiding in the recognition and elimination of infected or tumor cells. Additionally, in natural killer (NK) cells, CD8A homodimers on the cell surface provide a survival mechanism for conjugating with and lysing multiple target cells. CD8A homodimers also facilitate the survival and differentiation of activated lymphocytes into memory CD8 T-cells. This supplementary information is collated from multiple sources and compiled automatically.
See full target information CD8A

文献 (11)

Recent publications for all applications. Explore the full list and refine your search

The Journal of clinical investigation 135: PubMed40759576

2025

ST8Sia6 overexpression protects pancreatic β cells from spontaneous autoimmune diabetes in nonobese diabetic mice.

Applications

Unspecified application

Species

Unspecified reactive species

Justin Choe,Paul Belmonte,Sydney Crotts,Thanh Nguyen,David Friedman,Alexi Zastrow,Matthew Rajcula,Brady Hammer,Claire Wilhelm,Michael J Shapiro,Aleksey Matveyenko,Virginia Smith Shapiro

Cell biology and toxicology 41:97 PubMed40483281

2025

Annexin A1-FPR1 Interaction in dendritic cells promotes immune microenvironment modulation in Thyroid Cancer.

Applications

Unspecified application

Species

Unspecified reactive species

Hongwei Jiang,Lirun Kuang,Tianyi Zhang,Xupeng Zhao

Cell biology and toxicology 41:30 PubMed39808342

2025

Targeting CHEK1: Ginsenosides-Rh2 and Cu2O@G-Rh2 nanoparticles in thyroid cancer.

Applications

Unspecified application

Species

Unspecified reactive species

Lidong Wang,Xin Wu,XinLu Wang,Meng Dong,Hao Zhang,Pengfei Zhao

Clinical and translational medicine 15:e70123 PubMed39748197

2025

Titin gene mutations enhance radiotherapy efficacy via modulation of tumour immune microenvironment in rectum adenocarcinoma.

Applications

Unspecified application

Species

Unspecified reactive species

Hengchang Liu,Jialiang Liu,Xu Guan,Zhixun Zhao,Pu Cheng,Haipeng Chen,Zheng Jiang,Xishan Wang

Frontiers in bioengineering and biotechnology 12:1433126 PubMed39559553

2024

Cancer immunogenic cell death via pyroptosis with CXCR4-targeted nanotoxins in hepatocellular carcinoma.

Applications

Unspecified application

Species

Unspecified reactive species

Yingbin Huang,Yihu Li,Rui He,Shuyi Dong,Zheng Zhao,Xingyuan Jiao

Nature communications 15:3173 PubMed38609390

2024

Semmaphorin 3 A causes immune suppression by inducing cytoskeletal paralysis in tumour-specific CD8 T cells.

Applications

Unspecified application

Species

Unspecified reactive species

Mike B Barnkob,Yale S Michaels,Violaine André,Philip S Macklin,Uzi Gileadi,Salvatore Valvo,Margarida Rei,Corinna Kulicke,Ji-Li Chen,Vitul Jain,Victoria K Woodcock,Huw Colin-York,Andreas V Hadjinicolaou,Youxin Kong,Viveka Mayya,Julie M Mazet,Gracie-Jennah Mead,Joshua A Bull,Pramila Rijal,Christopher W Pugh,Alain R Townsend,Audrey Gérard,Lars R Olsen,Marco Fritzsche,Tudor A Fulga,Michael L Dustin,E Yvonne Jones,Vincenzo Cerundolo

Nature communications 14:321 PubMed36658158

2023

IFNγ signaling in cytotoxic T cells restricts anti-tumor responses by inhibiting the maintenance and diversity of intra-tumoral stem-like T cells.

Applications

Unspecified application

Species

Unspecified reactive species

Julie M Mazet,Jagdish N Mahale,Orion Tong,Robert A Watson,Ana Victoria Lechuga-Vieco,Gabriela Pirgova,Vivian W C Lau,Moustafa Attar,Lada A Koneva,Stephen N Sansom,Benjamin P Fairfax,Audrey Gérard

Frontiers in immunology 13:1047570 PubMed36531991

2022

suppressing nonalcoholic steatohepatitis associated tumorigenesis through CXCR6 natural killer T cells.

Applications

Unspecified application

Species

Unspecified reactive species

Tao Li,Xinlong Lin,Binhai Shen,Wujian Zhang,Yangyang Liu,Hongbin Liu,Ye Wang,Lijun Zheng,Fachao Zhi

Oxidative medicine and cellular longevity 2022:8385456 PubMed36193077

2022

Cefazolin/BMP-2-Loaded Mesoporous Silica Nanoparticles for the Repair of Open Fractures with Bone Defects.

Applications

Unspecified application

Species

Unspecified reactive species

Mingkui Shen,Lulu Wang,Li Feng,Chuangye Xu,Yi Gao,Sijing Li,Yulan Wu,Guoxian Pei

Cancer science 113:3044-3054 PubMed35598173

2022

Nasopharyngeal cancer cell-derived exosomal PD-L1 inhibits CD8+ T-cell activity and promotes immune escape.

Applications

Unspecified application

Species

Unspecified reactive species

Jie Yang,Jierong Chen,Hu Liang,Yahui Yu
View all publications

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