Cell Signaling Technology

Product Pathways - Lymphocyte Signaling

PD-L1 (E1L3N®) XP® Rabbit mAb (HRP Conjugate) #51296

pd-l1   pd1   pdl1  

No. Size Price
51296S 100 µl ( 10 western blots ) ¥4,264.00 现货查询 购买询价
51296 carrier free & custom formulation / quantityemail request
Applications Dilution Species-Reactivity Sensitivity MW (kDa) Isotype
W 1:1000 Human, Endogenous 40-50 Rabbit IgG

Species cross-reactivity is determined by western blot.

Applications Key: W=Western Blotting,

Specificity / Sensitivity

PD-L1 (E1L3N®) XP® Rabbit mAb (HRP Conjugate) recognizes endogenous levels of total PD-L1 protein.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues near the carboxy terminus of human PD-L1 protein.


This Cell Signaling Technology antibody is conjugated to the carbohydrate groups of horseradish peroxidase (HRP) via its amine groups. The HRP conjugated antibody is expected to exhibit the same species cross-reactivity as the unconjugated PD-L1 (E1L3N®) XP® Rabbit mAb #13684.

Western Blotting

Western Blotting

Western blot analysis of extracts from PC-3 and KARPAS-299 cells using PD-L1 (E1L3N®) XP® Rabbit mAb (HRP Conjugate). KARPAS cell line source: Dr. Abraham Karpas at the University of Cambridge.


Programmed cell death 1 ligand 1 (PD-L1, B7-H1, CD274) is a member of the B7 family of cell surface ligands that regulate T cell activation and immune responses. The PD-L1 ligand binds the PD-1 transmembrane receptor and inhibits T cell activation. PD-L1 was discovered following a search for novel B7 protein homologs and was later shown to be expressed by antigen presenting cells, activated T cells, and tissues including placenta, heart, and lung (1-3). Similar in structure to related B7 family members, PD-L1 protein contains extracellular IgV and IgC domains and a short, cytoplasmic region. Research studies demonstrate that PD-L1 is expressed in several tumor types, including melanoma, ovary, colon, lung, breast, and renal cell carcinomas (4-6). Expression of PD-L1 in cancer is associated with tumor infiltrating lymphocytes, which mediate PD-L1 expression through the release of interferon gamma (7). Additional research links PD-L1 expression to cancers associated with viral infections (8,9).

  1. Dong, H. et al. (1999) Nat Med 5, 1365-9.
  2. Freeman, G.J. et al. (2000) J Exp Med 192, 1027-34.
  3. Liang, S.C. et al. (2003) Eur J Immunol 33, 2706-16.
  4. Dong, H. et al. (2002) Nat Med 8, 793-800.
  5. Thompson, R.H. et al. (2006) Cancer Res 66, 3381-5.
  6. Pardoll, D.M. (2012) Nat Rev Cancer 12, 252-64.
  7. Taube, J.M. et al. (2012) Sci Transl Med 4, 127ra37.
  8. Lyford-Pike, S. et al. (2013) Cancer Res 73, 1733-41.
  9. Chen, B.J. et al. (2013) Clin Cancer Res 19, 3462-73.

Application References

Have you published research involving the use of our products? If so we'd love to hear about it. Please let us know!


Companion Products

For Research Use Only. Not For Use In Diagnostic Procedures.

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

XP is a registered trademark of Cell Signaling Technology, Inc.

Tween is a registered trademark of ICI Americas, Inc.

E1L3N is a registered trademark of Cell Signaling Technology, Inc.

Cell Signaling Technology® is a trademark of Cell Signaling Technology, Inc.

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