| Item Type: | Article |
|---|---|
| Title: | Latent human herpesvirus 6 is reactivated in CAR T cells |
| Creators: |
Lareau, C.A. |
| Abstract: | Cell therapies have yielded durable clinical benefits for patients with cancer, but the risks associated with the development of therapies from manipulated human cells are understudied. For example, we lack a comprehensive understanding of the mechanisms of toxicities observed in patients receiving T cell therapies, including recent reports of encephalitis caused by reactivation of human herpesvirus 6 (HHV-6). Here, through petabase-scale viral genomics mining, we examine the landscape of human latent viral reactivation and demonstrate that HHV-6B can become reactivated in cultures of human CD4(+) T cells. Using single-cell sequencing, we identify a rare population of HHV-6 'super-expressors' (about 1 in 300-10,000 cells) that possess high viral transcriptional activity, among research-grade allogeneic chimeric antigen receptor (CAR) T cells. By analysing single-cell sequencing data from patients receiving cell therapy products that are approved by the US Food and Drug Administration or are in clinical studies, we identify the presence of HHV-6-super-expressor CAR T cells in patients in vivo. Together, the findings of our study demonstrate the utility of comprehensive genomics analyses in implicating cell therapy products as a potential source contributing to the lytic HHV-6 infection that has been reported in clinical trials and may influence the design and production of autologous and allogeneic cell therapies. |
| Keywords: | Viral DNA, Human Herpesvirus 6, Roseolovirus Infections, T-Lymphocytes, Viral Load |
| Source: | Nature |
| ISSN: | 0028-0836 |
| Publisher: | Nature Publishing Group |
| Volume: | 623 |
| Page Range: | 608-615 |
| Date: | 16 November 2023 |
| Additional Information: | Copyright © The Author(s), under exclusive licence to Springer Nature Limited 2023 |
| Official Publication: | https://doi.org/10.1038/s41586-023-06704-2 |
| External Fulltext: | View full text on external repository or document server |
| PubMed: | View item in PubMed |
Repository Staff Only: item control page
Tools
Tools

