Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\26981773
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Oncotarget
2016 ; 7
(16
): 22579-89
Nephropedia Template TP
Roskopf CC
; Braciak TA
; Fenn NC
; Kobold S
; Fey GH
; Hopfner KP
; Oduncu FS
Oncotarget
2016[Apr]; 7
(16
): 22579-89
PMID26981773
show ga
Simultaneous targeting of multiple tumor-associated antigens (TAAs) in cancer
immunotherapy is presumed to enhance tumor cell selectivity and to reduce immune
escape.The combination of B lymphoid marker CD19 and myeloid marker CD33 is
exclusively present on biphenotypic B/myeloid leukemia cells. Triplebody 33-3-19
binds specifically to both of these TAAs and activates T cells as immune
effectors. Thereby it induces specific lysis of established myeloid (MOLM13,
THP-1) and B-lymphoid cell lines (BV173, SEM, Raji, ARH77) as well as of primary
patient cells. EC50 values range from 3 pM to 2.4 nM. In accordance with our
hypothesis, 33-3-19 is able to induce preferential lysis of double- rather than
single-positive leukemia cells in a target cell mixture: CD19/CD33
double-positive BV173 cells were eliminated to a significantly greater extent
than CD19 single-positive SEM cells (36.6% vs. 20.9% in 3 hours, p = 0.0048) in
the presence of both cell lines. In contrast, equivalent elimination efficiencies
were observed for both cell lines, when control triplebody 19-3-19 or a mixture
of the bispecific single chain variable fragments 19-3 and 33-3 were used. This
result highlights the potential of dual-targeting agents for efficient and
selective immune-intervention in leukemia patients.