| Autor: |
Imran G. House, Emily B. Derrick, Kevin Sek, Amanda X.Y. Chen, Jasmine Li, Junyun Lai, Kirsten L. Todd, Isabelle Munoz, Jessica Michie, Cheok Weng Chan, Yu-Kuan Huang, Jack D. Chan, Emma V. Petley, Junming Tong, DatMinh Nguyen, Sven Engel, Peter Savas, Simon J. Hogg, Stephin J. Vervoort, Conor J. Kearney, Marian L. Burr, Enid Y.N. Lam, Omer Gilan, Sammy Bedoui, Ricky W. Johnstone, Mark A. Dawson, Sherene Loi, Phillip K. Darcy, Paul A. Beavis |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Cell Reports, Vol 42, Iss 8, Pp 113014- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2211-1247 |
| DOI: |
10.1016/j.celrep.2023.113014 |
| Popis: |
Summary: CXCL9 expression is a strong predictor of response to immune checkpoint blockade therapy. Accordingly, we sought to develop therapeutic strategies to enhance the expression of CXCL9 and augment antitumor immunity. To perform whole-genome CRISPR-Cas9 screening for regulators of CXCL9 expression, a CXCL9-GFP reporter line is generated using a CRISPR knockin strategy. This approach finds that IRF1 limits CXCL9 expression in both tumor cells and primary myeloid cells through induction of SOCS1, which subsequently limits STAT1 signaling. Thus, we identify a subset of STAT1-dependent genes that do not require IRF1 for their transcription, including CXCL9. Targeting of either IRF1 or SOCS1 potently enhances CXCL9 expression by intratumoral macrophages, which is further enhanced in the context of immune checkpoint blockade therapy. We hence show a non-canonical role for IRF1 in limiting the expression of a subset of STAT1-dependent genes through induction of SOCS1. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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