SerpinB9 Proteins, Antibodies, cDNA Clones Research Reagents

All SerpinB9 reagents are produced in house and quality controlled, including 1 SerpinB9 Antibody, 17 SerpinB9 Gene, 1 SerpinB9 Lysate, 1 SerpinB9 Protein, 1 SerpinB9 qPCR. All SerpinB9 reagents are ready to use.

SerpinB9 Protein (1)

    SerpinB9 Antibody (1)

      SerpinB9 cDNA Clone (17)

      NM_004155.5

      In cloning vector

      In lentiviral vector

      SerpinB9 qPCR Primer (1)

      SerpinB9 Lysate (1)

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        SerpinB9 Background

        SerpinB9, also known as Cytoplasmic antiproteinase 3, CAP-3, Peptidase inhibitor 9, SERPINB9 and PI-9, is a cytoplasm protein which belongs to theserpin family and Ov-serpin subfamily. Serpin-B9 ( CAP-3 / PI-9 ) is the only known human intracellular inhibitor of granzyme B (GrB), the effector molecule in immunity against cytomegalovirus (CMV) and in renal allograft rejection. Serpin-B9 and SPI-6 expression in immune-privileged cells, APCs, and CTLs protects these cells against the actions of granzyme B, and when expressed in tumor cells or virally infected hepatocytes, confers resistance to killing by CTL and NK cells. Expression of increasing levels of Serpin-B9 ( CAP-3 / PI-9 ) in target cells may progressively inhibit immune surveillance by blocking NK and CTL-induced cytotoxicity through the perforin / granzyme pathway and then through the Fas / FasL pathway. Serpin-B9 ( CAP-3 / PI-9 ) is selectively up-regulated in hepatocytes in response to infiltration of the liver by NK cells that express perforin and enzymatically active granzyme B. Upregulated expression of Serpin-B9 ( CAP-3 / PI-9 ) in NSCLC cells may serve to protect them from apoptosis induced by GrB.

        SerpinB9 References

        • Rowshani,A.T. et al., 2005, J Infect Dis.192 (11): 1908-11.
        • Cunningham,T.D. et al., 2007, Cell Immunol 245 (1): 32-41.
        • Rousalova,I. et al., 2010, Int J Oncol  36 (1): 275-83.
        • Stout-Delgado,H.W. et al., 2007, J Immunol. 179 (10):6561-7.

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