Allogeneic CAR-T therapy drives autoimmune diseases into remission:
Early reports suggest that chimeric antigen receptor (CAR)-T therapy has remarkable potential for treating autoimmune disease. Current approaches rely on autologous CAR-T cells, creating a bottleneck to the broad deployment of this therapy.
A recent publication in Cell reports the first use of allogeneic CAR-T cells in three patients with systemic autoimmune disease. This off-the-shelf cell product (TyU19) was manufactured by isolating T cells from a healthy donor’s peripheral blood mononuclear cells, transducing the T cells with a second-generation CD19 CAR, and then using CRISPR-Cas9 to target TRAC, HLA-A, HLA-B, CIITA, and PD-1 to reduce the risk of immune rejection and graft-versus-host disease (GvHD). These cells were then banked and infused into one patient with immune-mediated necrotizing myopathy and two patients with diffuse cutaneous systemic sclerosis. In all three patients, CAR-T cells engrafted and expanded, coinciding with a complete depletion of circulating B cells for at least 2 months. Impressively, all three patients showed significant clinical improvement via respective clinical indexes, molecular markers, and radiographic measures. Remarkably, fibrosis in the lungs and hearts of some patients showed improvement. Although follow-up has only been extended to 6 months, these patients have remained in remission.
This scientific discovery holds great potential for future treatment of autoimmune diseases.
Original publication:
https://lnkd.in/ejPsikBa
Further reading:
https://lnkd.in/e9DssDqa
https://lnkd.in/e2zB33zN
https://lnkd.in/eH2aY-XG
https://lnkd.in/egSa6gCH
https://lnkd.in/eKKdWAWg
https://lnkd.in/eFA4mcpN