Engineered red blood cells as an off-the-shelf allogeneic anti-tumor therapeutic.

Engineered red blood cells as an off-the-shelf allogeneic anti-tumor therapeutic.
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DOI:
10.1038/s41467-021-22898-3
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发表时间:
2021-05-11
影响因子:
16.6
通讯作者:
Chen TF
Chen TF
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Zhang X;Luo M;Dastagir SR;Nixon M;Khamhoung A;Schmidt A;Lee A;Subbiah N;McLaughlin DC;Moore CL;Gribble M;Bayhi N;Amin V;Pepi R;Pawar S;Lyford TJ;Soman V;Mellen J;Carpenter CL;Turka LA;Wickham TJ;Chen TF

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Checkpoint inhibitors and T-cell therapies have highlighted the critical role of T cells in anti-cancer immunity. However, limitations associated with these treatments drive the need for alternative approaches. Here, we engineer red blood cells into artificial antigen-presenting cells (aAPCs) presenting a peptide bound to the major histocompatibility complex I, the costimulatory ligand 4-1BBL, and interleukin (IL)-12. This leads to robust, antigen-specific T-cell expansion, memory formation, additional immune activation, tumor control, and antigen spreading in tumor models in vivo. The presence of 4-1BBL and IL-12 induces minimal toxicities due to restriction to the vasculature and spleen. The allogeneic aAPC, RTX-321, comprised of human leukocyte antigen-A*02:01 presenting the human papilloma virus (HPV) peptide HPV16 E711-19, 4-1BBL, and IL-12 on the surface, activates HPV-specific T cells and promotes effector function in vitro. Thus, RTX-321 is a potential ‘off-the-shelf’ in vivo cellular immunotherapy for treating HPV + cancers, including cervical and head/neck cancers. Red blood cells (RBCs) have unique properties that have been exploited for therapeutic uses. Here the authors engineer RBCs to co-express tumor associated antigens on MHC I, 4-1BBL and IL-12, generating artificial antigen presenting cells that can induce antigen-specific T cell responses and antitumor immune responses in preclinical models.
T细胞共刺激和共抑制的分子机制。
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