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A novel chimeric antigen receptor containing a JAK–STAT signaling domain mediates superior antitumor effects

Open access
Kagoya, Yuki, Tanaka, Shinya, Guo, Tingxi, Anczurowski, Mark, Wang, Chung-Hsi, Saso, Kayoko, Butler, Marcus O, Minden, Mark D, Hirano, Naoto·2018·Nature Medicine

Abstract

The adoptive transfer of T cells engineered with a chimeric antigen receptor (CAR) (hereafter referred to as CAR-T cells) specific for the B lymphocyte antigen CD19 has shown impressive clinical responses in patients with refractory B cell malignancies. However, the therapeutic effects of CAR-T cells that target other malignancies have not yet resulted in significant clinical benefit. Although inefficient tumor trafficking and various immunosuppressive mechanisms can impede CAR-T cell effector responses, the signals delivered by the current CAR constructs may still be insufficient to fully activate antitumor T cell functions. Optimal T cell activation and proliferation requires multiple signals, including T cell receptor (TCR) engagement (signal 1), co-stimulation (signal 2) and cytokine engagement (signal 3). However, CAR constructs currently being tested in the clinic contain a CD3z (TCR signaling) domain and co-stimulatory domain(s) but not a domain that transmits signal 3 (refs. 13, 14, 15, 16, 17, 18). Here we have developed a novel CAR construct capable of inducing cytokine signaling after antigen stimulation. This new-generation CD19 CAR encodes a truncated cytoplasmic domain from the interleukin (IL)-2 receptor β-chain (IL-2Rβ) and a STAT3-binding tyrosine-X-X-glutamine (YXXQ) motif, together with the TCR signaling (CD3z) and co-stimulatory (CD28) domains (hereafter referred to as 28-ΔIL2RB-z(YXXQ)). The 28-ΔIL2RB-z(YXXQ) CAR-T cells showed antigen-dependent activation of the JAK kinase and of the STAT3 and STAT5 transcription factors signaling pathways, which promoted their proliferation and prevented terminal differentiation in vitro. The 28-ΔIL2RB-z(YXXQ) CAR-T cells demonstrated superior in vivo persistence and antitumor effects in models of liquid and solid tumors as compared with CAR-T cells expressing a CD28 or 4-1BB co-stimulatory domain alone. Taken together, these results suggest that our new-generation CAR has the potential to demonstrate superior antitumor effects with minimal toxicity in the clinic and that clinical translation of this novel CAR is warranted.

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Metadata

Authors
Kagoya, Y., Tanaka, S., Guo, T., Anczurowski, M., Wang, C.-H., Saso, K., Butler, M. O., Minden, M. D., & Hirano, N.
Venue
Nature Medicine
Published
2018-02-05
Volume
24
Issue
3
Pages
352-359
ISSN
  • 1078-8956 (ISSN-L)
  • 1546-170X
OpenAlex
W2787578932
Cited by
622
References
42
FWCI
14.32
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: A novel chimeric antigen receptor containing a JAK–STAT signaling domain mediates superior antitumor effects. https://app.cochat.ai/papers/10.1038/nm.4478
The paper
Kagoya, Y., Tanaka, S., Guo, T., Anczurowski, M., Wang, C.-H., Saso, K., Butler, M. O., Minden, M. D., & Hirano, N. (2018). A novel chimeric antigen receptor containing a JAK–STAT signaling domain mediates superior antitumor effects. Nature Medicine. https://doi.org/10.1038/nm.4478

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