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Mouse Monoclonal PD1 antibody - conjugated to Alexa Fluor® 647. Suitable for IHC-P, Flow Cyt (Intra) and reacts with Human samples. Cited in 1 publication.


Images

Flow Cytometry (Intracellular) - Alexa Fluor® 647 Anti-PD1 antibody [NAT105] (AB220301), expandable thumbnail
  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Alexa Fluor® 647 Anti-PD1 antibody [NAT105] (AB220301), expandable thumbnail

Publications

Key facts

Isotype
IgG1
Host species
Mouse
Conjugation
Alexa Fluor® 647
Excitation/Emission
Ex: 650nm, Em: 665nm
Storage buffer

pH: 7.4
Preservative: 0.02% Sodium azide
Constituents: PBS, 30% Glycerol (glycerin, glycerine), 1% BSA

Form
Liquid
Clonality
Monoclonal

Immunogen

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

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Reactivity data

Select an application
Product promiseTestedExpectedPredictedNot recommended
IHC-PFlow Cyt (Intra)
Human
Tested
Tested

Tested
Tested

Species
Human
Dilution info
1/50
Notes

Perform heat-mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.

Tested
Tested

Species
Human
Dilution info
1/500
Notes

-

Associated Products

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Target data

Function

The protein expressed by the gene PDCD1 functions as an inhibitory receptor on antigen-activated T-cells, playing a critical role in the induction and maintenance of immune tolerance to self. It delivers inhibitory signals by binding to the ligands CD274/PDCD1L1 and CD273/PDCD1LG2. Tumors exploit the PDCD1-mediated inhibitory pathway to attenuate anti-tumor immunity, enabling tumor survival by evading immune system destruction. The interaction with CD274/PDCD1L1 inhibits the effector function of cytotoxic T lymphocytes (CTLs). Blocking the PDCD1-mediated pathway can reverse the exhausted T-cell phenotype and normalize the anti-tumor response, providing a rationale for cancer immunotherapy. This supplementary information is collated from multiple sources and compiled automatically.

Alternative names

CD279, PD1, PDCD1, Programmed cell death protein 1, Protein PD-1, hPD-1

Recommended products

Mouse Monoclonal PD1 antibody - conjugated to Alexa Fluor® 647. Suitable for IHC-P, Flow Cyt (Intra) and reacts with Human samples. Cited in 1 publication.

Key facts

Isotype
IgG1
Conjugation
Alexa Fluor® 647
Excitation/Emission
Ex: 650nm, Em: 665nm
Form
Liquid
Clonality
Monoclonal
Immunogen
  • The exact immunogen used to generate this antibody is proprietary information.
Clone number
NAT105
Purification technique
Affinity purification Immunogen
Specificity

This antibody recognizes human PD-1, a checkpoint protein expressed by T cells that is involved in the control of immune cell responses.

Light chain type
kappa
Concentration
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Storage

Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle, Store in the dark

Notes

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.

Supplementary info

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

PD1 also known as Programmed Cell Death Protein 1 or PDCD1 is a transmembrane protein that plays a critical role in regulating immune responses. It has a mass of approximately 55 kDa. PD1 is expressed on the surface of T cells B cells and some myeloid cells. PD1’s expression increases upon activation of these immune cells assisting in maintaining peripheral tolerance. Researchers often use PD1 mouse models and chimeric antibodies to explore the function of PD1 for experimental purposes. Antibodies such as anti-PD1 such as EH12.2H7 help in blocking PD1 interaction to study its role further.

Biological function summary

PD1 serves as an inhibitory receptor acting as a checkpoint in the immune system. It becomes part of an immune-suppressive complex when it binds with its ligands PD-L1 or PD-L2 which are expressed on various cell types including some tumor cells. This interaction suppresses the proliferation of T cells and cytokine production contributing to immune homeostasis. By controlling T cell activity PD1 limits autoimmunity but can also reduce the immune system's capability to attack cancer cells.

Pathways

PD1 functions in the immune checkpoint pathway a critical regulatory circuit in immune regulation. The engagement of PD1 with its ligands initiates a cascade that inhibits the function and proliferation of T cells through downstream SHP-2 phosphatase activity. This pathway frequently involves other regulatory proteins like CTLA-4 and is an important mechanism by which the body modulates immune responses. Related pathways often intersect with those involving T cell receptor signaling and contribute to the overall modulation of immune activity.

Associated diseases and disorders

PD1 has a significant role in cancer and autoimmune disorders. PD1 expression can allow tumors to evade immune surveillance making PD1 a target for cancer therapies such as anti-PD1 antibodies which aim to block PD1 and restore T cell activity. The interaction of PD1 with cancer-related proteins like PD-L1 facilitates tumor immune evasion. In autoimmune disorders PD1’s regulation of immune balance can become dysregulated leading to persistent immune activation and tissue damage. Understanding PD1 and its interaction with proteins such as PD-L1 helps in developing therapeutic strategies for both cancer and autoimmune conditions.

Product promise

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2 product images

  • Flow Cytometry (Intracellular) - Alexa Fluor® 647 Anti-PD1 antibody [NAT105] (ab220301), expandable thumbnail

    Flow Cytometry (Intracellular) - Alexa Fluor® 647 Anti-PD1 antibody [NAT105] (ab220301)

    Overlay histogram showing MOLT4 cells stained with ab220301 (red line). The cells were incubated in 1x PBS / 10% normal goat serum to block non-specific protein-protein interactions followed by the antibody (ab220301, 1/500 dilution) for 30 min at 22°C.

    Isotype control antibody (black line) was Mouse IgG1 (monoclonal) Alexa Fluor® 647 used at the same concentration and conditions as the primary antibody. Unlabelled sample (blue line) was also used as a control.

    Acquisition of >5,000 events were collected using a 40 mW Red laser (640nm) and 670/14 bandpass filter.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Alexa Fluor® 647 Anti-PD1 antibody [NAT105] (ab220301), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Alexa Fluor® 647 Anti-PD1 antibody [NAT105] (ab220301)

    IHC image of PD1 staining in a section of formalin-fixed paraffin-embedded normal human tonsil*.

    The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6) in a Biocare Medical NxGen pressure cooker using retrieval settings of 110oC for 8 minutes. 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 ab220301 at 1/50 dilution (shown in red) and counterstained using Alexa Fluor® 488 Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker ab195887, Mouse monoclonal to alpha Tubulin (Alexa Fluor® 488), at 1/250 dilution (shown in green). Nuclear DNA was labelled 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.

    *Tissue obtained from the Human Research Tissue Bank, supported by the NIHR Cambridge Biomedical Research Centre.

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Product protocols

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

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