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B-hPD-1 mice
Strain Name C57BL/6-Pdcd1tm1(PDCD1)/Bcgen Common Name  B-hPD-1 mice
Background C57BL/6 Catalog number  110003
Aliases 
PDCD1 (Programmed death-1,as known as PD-1)

Gene description


PD-1 (Programmed death-1) is mainly expressed on the surface of T cells and primary B cells. The two PD-1 ligands, PD-L1 and PD-L2, are widely expressed on antigen-presenting cells (APCs). PD-1 interacts with its ligands and plays an important role in the negative regulation of the immune response. PD-L1 protein expression is detected in many human tumor tissues. PD-L1 expression in tumor cells could be induced by the microenvironment of tumor cells. PD-L1 expression is favorable for tumorigenesis and growth, for induction of anti-tumor T Cell apoptosis, and for escaping responses by the immune system. Inhibition of PD-1 binding to its ligand can result in tumor cells that are exposed to the killing version of the immune system, and thus is a target for cancer treatments.

Protein expression analysis


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Strain specific PD-1 expression analysis in homozygous B-hPD-1 mice by flow cytometry. Splenocytes were collected from WT and homozygous B-hPD-1 (H/H) mice stimulated with anti-CD3ε in vivo, and analyzed by flow cytometry with species-specific anti-PD-1 antibody. Mouse PD-1 was detected in WT mice. Human PD-1 was exclusively detected in homozygous B-hPD-1 mice but not WT mice.


In vivo efficacy of anti-human PD-1 antibody

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Antitumor activity of anti-human PD-1 antibody in B-hPD-1 mice. (A) Anti-human PD-1 antibody inhibited MC38 tumor growth in B-hPD-1 mice. Murine colon cancer MC38 cells (5×105) were subcutaneously implanted into homozygous B-hPD-1 mice (male, 4-6 week-old, n=5). Mice were grouped when tumor volume reached approximately 100 mm3, at which time they were treated with anti-human PD-1 antibody with doses and schedules indicated in panel (A). (B) Body weight changes during treatment. As shown in panel A, anti-human PD-1 antibody was efficacious in controlling tumor growth in B-hPD-1 mice, demonstrating that B-hPD-1 mice provide a powerful preclinical model for in vivo evaluation of anti-human PD-1 antibodies. Values are expressed as mean ± SEM.