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Al-Ola A Abdallah: Insights into bispecific T-cell engagers
Jan 22, 2025, 09:11

Al-Ola A Abdallah: Insights into bispecific T-cell engagers

Al-Ola A Abdallah, Associate Professor, Plasma Cell Disorder Program Director, Division of HMCT/University of Kansas Medical Center, posted the following on X:

“Bispecific Antibodies:

1) BiTEs (Bispecific T-cell Engagers): Comprise two scFvs, one targeting a tumor-associated antigen and the other targeting CD3 on T cells. A flexible linker connects the two domains, allowing for versatile interaction with the targets.

Al-Ola A Abdallah: Insights into bispecific T-cell engagers

2) DARTs (Dual-Affinity Retargeting molecules): Have a diabody backbone with two polypeptide chains, where VH domains are connected by a disulfide bond. DARTs offer greater stability and potentially higher T-cell activation compared to BiTEs

Al-Ola A Abdallah: Insights into bispecific T-cell engagers

3) BiKEs (Bispecific Killer Engagers): Heterodimeric bispecific scFvs that target NK cells.

Al-Ola A Abdallah: Insights into bispecific T-cell engagers

4) TriKEs (Trispecific Killer Engagers): Include an IL-15 crosslinker for enhanced NK cell stimulation.

Al-Ola A Abdallah: Insights into bispecific T-cell engagers

5) TandAbs (Tandem diabodies): Tetravalent molecules consisting of two linked diabodies, each having two binding sites for each antigen. They offer improved stabilization and longer half-life compared to smaller molecules due to their molecular weight.

Al-Ola A Abdallah: Insights into bispecific T-cell engagers