The present invention includes an engineered cell comprising a chimeric antigen receptor (CAR) further comprising a nucleic acid molecule comprising a suicide gene comprising a ligand binding domain and a suicide domain wherein the ligand binding domain is capable of binding to radiolabeled tracer or a small molecule suicide switch. This invention also includes methods for inducing apoptosis of an engineered cell, methods for assessing the efficacy or toxicity of an adoptive cell therapy in a subject, methods for detecting the quantity of engineered T cells in a subject, methods for monitoring an immunotherapy treatment in a subject and methods of imaging engineered T cells in a subject. In some embodiments, the imaging is performed via Positron Emission Topography (PET). This invention further includes a chemical inducer of dimerization (CID), wherein the CID is a Bis-Trimethoprim (Bis-TMP).
本发明包括一种包含嵌合抗原受体(CAR)的工程细胞,该嵌合抗原受体进一步包含自杀
基因的核酸分子,该自杀
基因包含
配体结合结构域和自杀结构域,其中
配体结合结构域能够与放射性标记的示踪剂或小分子自杀开关结合。本发明还包括诱导工程细胞凋亡的方法、评估受试者体内采纳细胞疗法的疗效或毒性的方法、检测受试者体内工程T细胞数量的方法、监测受试者体内免疫疗法的方法以及对受试者体内工程T细胞成像的方法。在某些实施方案中,成像是通过正电子发射地形图(PET)进行的。本发明还包括一种二聚化
化学诱导剂(CID),其中的 CID 是双三
甲氧苄啶(Bis-
TMP)。