CAR chase: Where do engineered cells go in humans? Editorial

   


Authors: Krebs, S.; Dacek, M. M.; Carter, L. M.; Scheinberg, D. A.; Larson, S. M.
Title: CAR chase: Where do engineered cells go in humans?
Abstract: Chimeric antigen receptor (CAR) – and T-cell receptor (TCR) – modified T-cells are rapidly emerging as a viable treatment option for cancer patients. While initial clinical trials for these CAR T cells showed response rates of over 90% in some cases, retrospective studies have revealed a wide variability in patient responses as well as a significant proportion of patients relapsing after an initial response. In addition, patients often have severe adverse reactions to this therapy (e.g., cytokine release and neurologic syndromes). As a result, much research is still needed to be able to predict both therapeutic outcomes and possible toxicities. Furthermore, little success has been seen in treating solid tumors with engineered T cells and uncovering modes of failure is a topic of much research. Finally, little is known about the T cells’ pharmacokinetics after infusion into the patient, as standard methods of tracking the cells analyze peripheral blood and tumor biopsies – both of which lack spatiotemporal information. Herein, we propose that reporter gene-based imaging of engineered T cells in humans would be tremendously valuable in elucidating the fate of the transplanted T cells and would greatly facilitate clinical translation of new CAR and TCR technologies. Currently, there are no FDA-approved reporter genes and few methods have advanced to human studies. Herein, we outline current reporter gene approaches to track engineered cells in vivo, analyze why current reporter genes have not progressed into the clinic, and propose “rules” for designing a widely applicable reporter gene for use in humans. © Copyright © 2020 Krebs, Dacek, Carter, Scheinberg and Larson.
Keywords: cancer radiotherapy; nuclear magnetic resonance imaging; tumor localization; gene expression; image analysis; signal noise ratio; prostate specific membrane antigen; immune response; genetic engineering; dosimetry; glioblastoma; immunogenicity; fluorodeoxyglucose f 18; reporter gene; chimeric antigen receptor; gene silencing; gallium 68; biomedical engineering; pharmacokinetics; pet/ct; sodium iodide symporter; somatostatin receptor 2; radiolabeling; human; article; car t cells; positron emission tomography-computed tomography; t cell trafficking; tcr t cells
Journal Title: Frontiers in Oncology
Volume: 10
ISSN: 2234-943X
Publisher: Frontiers Media S.A.  
Date Published: 2020-09-11
Start Page: 577773
Language: English
DOI: 10.3389/fonc.2020.577773
PROVIDER: scopus
PMCID: PMC7518311
PUBMED: 33042849
DOI/URL:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091578081&doi=10.3389%2ffonc.2020.577773&partnerID=40&md5=4f0e8864eedc78e27088105334b3109f
Notes: Article -- Export Date: 2 November 2020 -- Source: Scopus
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MSK Authors
  1. David Scheinberg
    499 Scheinberg
  2. Steven M Larson
    959 Larson
  3. Simone Susanne Krebs
    56 Krebs
  4. Lukas M Carter
    83 Carter
  5. Megan Dacek
    17 Dacek
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