Skip to main content
An official website of the United States government
Government Funding Lapse
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

allogeneic tri-functional anti-CD19 CAR-NK cells

A preparation of allogeneic natural killer (NK) cells transduced with a retroviral vector expressing the immunostimulatory cytokine interleukin-15 (IL-15) and encoding a chimeric antigen receptor (CAR) specific for the tumor-associated antigen (TAA) cluster of differentiation 19 (CD19) that is coupled to the co-stimulatory domains cluster of differentiation 28 (CD28, T-cell-specific surface glycoprotein CD28), cluster of differentiation 137 (CD137; 4-1BB), and the zeta chain of the T-cell receptor (TCR)/CD3 complex (TCRzeta; CD247; CD3zeta); and a blocker for the inhibitory T-cell receptor programmed cell death protein 1 (PD-1; PDCD1; CD279), with potential immunomodulating and antineoplastic activities. Upon transfusion, the allogeneic tri-functional anti-CD19 CAR-NK cells recognize, bind to and induce selective cytotoxicity in CD19-expressing tumor cells. IL-15 enhances the cytotoxic effect of the NK cells and the activated anti-tumor T cells. The PD-1 inhibitory domain targets and binds to programmed cell death-1 ligand 1 (PD-L1) expressed on tumor cells, thereby preventing the binding of the PD-1 on T lymphocytes to its ligand, PD-L1 on tumor cells. This prevents PD-1/PD-L1-mediated inhibition of T lymphocytes and leads to the activation and expansion of T cells resulting in a cytotoxic T lymphocyte (CTL) response against tumor cells, thereby enhancing the elimination of tumor cells. CD19 antigen is a B-cell-specific cell surface antigen expressed in all B-cell lineage malignancies. The co-stimulatory signaling domains enhance both proliferation of T cells and anti-tumor activity.
Synonym:allogeneic CD19-TriCAR SILK cells
allogeneic CD19-TriCAR-T/SILK
allogeneic CD19-TriCAR-T/SILK cells
Search NCI's Drug Dictionary