MANAGEMENT, NAVIGATION AND CONTROL PROTEINS AND METHOD OF THEIR OBTAINING AND USE Russian patent published in 2024 - IPC C07K16/28 C07K16/32 C12N5/781 C12N5/09 A61K35/17 A61K39/395 A61P35/00 

Abstract RU 2811457 C2

FIELD: biotechnology.

SUBSTANCE: invention relates to antitumor tetraspecific antibodies, and can be used in medicine for the treatment of a subject with a CD19-positive malignant neoplasm. The following was constructed: a recombinant tetraspecific antibody with specificity for binding to CD3, CD19, PD-L1 and 4-1BB containing the following in tandem from the N-terminus to the C-terminus: a binding domain for CD-3, a binding domain for CD19, an IgG Fc domain, a binding domain for PD-L1, and a binding domain for 4-1BB, wherein the binding domain for tumor-associated antigen is not adjacent to the binding domain for T-cell costimulatory receptor.

EFFECT: invention provides an antitumor agent having activity in redirecting PBMC T-cell activity and stimulating the proliferation of CD8 T-cells against an acute B lymphoblastic leukemia cell line.

5 cl, 23 dwg, 11 tbl, 21 ex

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RU 2 811 457 C2

Authors

Zhu, Yi

Olsen, Ole

Xia, Dong

Jellyman, David

Bykova, Katrina

Rousseau, Anne-Marie

Brady, Bill

Renshaw, Blair

Kovacevich, Brian

Liang, Yu

Wang, Yuyan

Gao, Zeren

Huang, Hui

Dates

2024-01-12Published

2019-03-26Filed