1255792-04-1Relevant articles and documents
Photoswitchable CAR-T Cell Function In Vitro and In Vivo via a Cleavable Mediator
Zhang, Bo,Wang, Yan,Huang, Shenlong,Sun, Jiaqi,Wang, Min,Ma, Wenxiao,You, Yanbo,Wu, Ling,Hu, Jin,Song, Wei,Liu, Xudong,Li, Shengjie,Chen, Hua,Zhang, Guisheng,Zhang, Lihe,Zhou, Demin,Li, Lingjun,Zhang, Xuan
, p. 60 - 7,69 (2021)
Chimeric antigen receptor (CAR)-T-based therapeutics are a breakthrough in cancer treatment; however, they are hampered by constitutive activation, which leads to worrisome side effects. Engineering CAR-T cells to be as tightly controllable as possible remains a topic of ongoing investigation. Here, we report a photoswitchable approach that uses a mediator for the at-will regulation of CAR-T cells. This mediator carries dual folate and fluorescein isothiocyanate moieties tethered by an ortho-nitrobenzyl ester photocleavable linker. CAR-T cells were shown to be highly cytotoxic to targeted cells only in the presence of the mediator and acted in a dose-dependent manner. The toxicity of CAR-T cells can be rapidly terminated by cleavage of the mediator, and the effects of CAR-T cells can be activated again by resupplementation with the mediator without compromising tumor therapy. The approach described here provides a direction for enhancing the controllability of CAR-T cells and can likely be applied in other immunotherapies.CAR-T is a powerful technology for cancer therapy, but is largely limited by inherent controllability issues. Zhang et al. developed an accurate controllable approach based on the bond-cleavage chemistry combined with universal anti-FITC CAR-T cells, allowing the regulation of CAR-T cells in a switchable manner.
3D-exoquant method for the analysis of surface molecules and quantification of tissue-specific exosomes in biological fluids
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, (2022/02/16)
In various embodiments methods are provided for identifying and/or quantifying one or more antigens of interest (biomarkers) on the surface of cell- or tissue-specific exosomes. In an illustrative embodiments the methods comprise: i) incubating a populati
A photocleavable rapamycin conjugate for spatiotemporal control of small GTPase activity
Umeda, Nobuhiro,Ueno, Tasuku,Pohlmeyer, Christopher,Nagano, Tetsuo,Inoue, Takanari
, p. 12 - 14 (2011/03/17)
We developed a novel method to spatiotemporally control the activity of signaling molecules. A newly synthesized photocaged rapamycin derivative induced rapid dimerization of FKBP (FK-506 binding protein) and FRB (FKBP-rapamycin binding protein) upon UV i
