Dimerizing Agent Regulated Immunoreceptor Complex-expressing CD33-specific Autologous
CAR T Cells SC-DARIC33 - CISMeF
Dimerizing Agent Regulated Immunoreceptor Complex-expressing CD33-specific Autologous
CAR T Cells SC-DARIC33NCIt concept
Preferred Label : Dimerizing Agent Regulated Immunoreceptor Complex-expressing CD33-specific Autologous
CAR T Cells SC-DARIC33;
NCIt synonyms : DARIC-expressing CD33-specific Autologous CAR T Cells SC-DARIC33; Seattle Children's DARIC33 Autologous CAR T Cells SC-DARIC33; DARIC33 Autologous CAR T-cells SC-DARIC33; DARIC-expressing Anti-CD33 CAR T Cells SC-DARIC33;
NCIt definition : A preparation of equal amounts of autologous CD4-positive and CD8-positive T-lymphocytes
transduced with a lentiviral vector expressing a chimeric antigen receptor (CAR) specific
for the tumor-associated antigen (TAA) CD33 and genetically modified to express a
Dimerizing Agent Regulated Immunoreceptor Complex (DARIC), with potential immunomodulating
and antineoplastic activities. Upon transfusion of the DARIC-expressing CD33-specific
autologous CAR T-cells SC-DARIC33 and followed by intermittent low dose rapamycin
administration, rapamycin binds to DARIC and activates the T-cells when binding to
CD33-expressing tumor cells, thereby inducing selective toxicity in CD33-expressing
tumor cells. CD33 is expressed on normal non-pluripotent hematopoietic stem cells
and on myeloid leukemia cells. The ability of rapamycin to control the activity of
the DARIC cells may help control the toxicity of the CAR T-cells, prevent T-cell exhaustion
and may help them last longer in vivo. Using the DARIC platform, the antigen recognition
and signaling functions of a CAR are separated into two distinct polypeptides and
engineered to contain the two interacting and dimerization domains, FK506-binding
protein (FKPB12) and FKBP12-rapamycin-binding (FRB) protein. In the absence of the
dimerizing drug rapamycin, the CAR T-cells lack signaling activity upon antigen recognition
and binding. The administration of the dimerizing agent enables the two DARIC subunits
to interact and thereby allows for the CAR T-cells to fully function and activate
their signaling abilities upon antigen recognition.;