NCIt definition : Autologous human T-lymphocytes transduced with a recombinant lentiviral vector encoding
a chimeric T-cell receptor consisting of an anti-CD22 single chain variable fragment
(scFv) and the co-stimulatory domain 4-1BB (CD137) coupled to the zeta chain of the
TCR/CD3 complex (CD3-zeta), with potential immunostimulating and antineoplastic activities.
Autologous peripheral blood lymphocytes (PBLs) from a patient with CD22-positive cancer
are transduced with this lentiviral vector that encodes the CAR gene specific for
CD22. After isolation, transduction, expansion in culture and reintroduction into
the patient, the anti-CD22 scFv TCRz:41BB-CAR lentiviral vector-transduced autologous
T-lymphocytes express anti-CD22-CAR on their cell surfaces and bind to the CD22 antigen
on tumor cell surfaces. Subsequently, CD22-expressing tumor cells are lysed. CD22,
a B-lineage-restricted, transmembrane phosphoglycoprotein, is expressed on malignant
B-cells.;