Other

Beijing Dcty Biotech Co., Ltd.

Shunchang Jiao

Rong Zhang

Zishan Zhou

Gang Peng

Tianfu Zhang

Jiasen Xie

Ziming Wu

Some embodiments of the disclosure use human peripheral blood for ctDNA sequencing or tumor tissues for whole exome sequencing, screen out mutation sites to perform antigen epitope prediction, connect and synthesize an expression gene sequence of mutant peptides. Other embodiments of the disclosure construct a lentiviral vector, package the lentivirus, transfect an APC cell to complete transformation of a specific LV cell, co-culture in vitro with PBMC separated from the peripheral blood, screen out an effective polypeptide, and transform common T cells into RFF cells. Suppressive signaling molecules include one or more of PD-1, Tim-3, LAG3, CTLA-4, BTLA, VISTA, CD160, and 2B4 (CD244). Antigen presenting cells include one or more of PBMC, a dendritic cell, neutrophil, B lymphocyte, and macrophage.

LRFFT2 cell

The present invention provides a method for preparing a coronavirus-targeting universal DC cell vaccine, and belongs to the technical field of virus vaccine preparation. The preparation method includes the following steps: ligating a fusion gene including a HLA gene and a coronavirus antigen gene onto an expression vector to obtain a recombinant vector; then transferring the recombinant vector into antigen-presenting cells to be transfected to obtain the coronavirus-targeting universal DC cell vaccine. The universal DC cell vaccine of the present invention has a targeting property against a coronavirus, can effectively stimulate a CTL, and has a killing effect on a target cell.

Coronavirus-targeting universal DC cell vaccine, and preparation method and use thereof

Growing community of inventors

Beijing, China

Shunchang Jiao