1
|
Zannikou M, Duffy JT, Levine RN, Seblani M, Liu Q, Presser A, Arrieta VA, Chen CJ, Sonabend AM, Horbinski CM, Lee-Chang C, Miska J, Lesniak MS, Gottschalk S, Balyasnikova IV. IL15 modification enables CAR T cells to act as a dual targeting agent against tumor cells and myeloid-derived suppressor cells in GBM. J Immunother Cancer 2023; 11:e006239. [PMID: 36759014 PMCID: PMC9923337 DOI: 10.1136/jitc-2022-006239] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/25/2023] [Indexed: 02/11/2023] Open
Abstract
INTRODUCTION The immunosuppressive tumor microenvironment (TME) is a major barrier to the efficacy of chimeric antigen receptor T cells (CAR-T cells) in glioblastoma (GBM). Transgenic expression of IL15 is one attractive strategy to modulate the TME. However, at present, it is unclear if IL15 could be used to directly target myeloid-derived suppressor cells (MDSCs), a major cellular component of the GBM TME. Here, we explored if MDSC express IL15Rα and the feasibility of exploiting its expression as an immunotherapeutic target. METHODS RNA-seq, RT-qPCR, and flow cytometry were used to determine IL15Rα expression in paired peripheral and tumor-infiltrating immune cells of GBM patients and two syngeneic murine GBM models. We generated murine T cells expressing IL13Rα2-CARs and secretory IL15 (CAR.IL15s) or IL13Rα2-CARs in which IL15 was fused to the CAR to serve as an IL15Rα-targeting moiety (CAR.IL15f), and characterized their effector function in vitro and in syngeneic IL13Rα2+glioma models. RESULTS IL15Rα was preferentially expressed in myeloid, B, and dendritic cells in patients' and syngeneic GBMs. In vitro, CAR.IL15s and CAR.IL15f T cells depleted MDSC and decreased their secretion of immunosuppressive molecules with CAR.IL15f T cells being more efficacious. Similarly, CAR.IL15f T cells significantly improved the survival of mice in two GBM models. TME analysis showed that treatment with CAR.IL15f T cells resulted in higher frequencies of CD8+T cells, NK, and B cells, but a decrease in CD11b+cells in tumors compared with therapy with CAR T cells. CONCLUSIONS We demonstrate that MDSC of the glioma TME express IL15Ra and that these cells can be targeted with secretory IL15 or an IL15Rα-targeting moiety incorporated into the CAR. Thus, IL15-modified CAR T cells act as a dual targeting agent against tumor cells and MDSC in GBM, warranting their future evaluation in early-phase clinical studies.
Collapse
Affiliation(s)
- Markella Zannikou
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Northwestern Medicine Malnati Brain Tumor Institute of the Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Joseph T Duffy
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Northwestern Medicine Malnati Brain Tumor Institute of the Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Rebecca N Levine
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Northwestern Medicine Malnati Brain Tumor Institute of the Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Maggie Seblani
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Division of Hematology, Oncology and Stem Cell Transplant, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
- Department of Pediatrics, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA
| | - Qianli Liu
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Northwestern Medicine Malnati Brain Tumor Institute of the Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Aaron Presser
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Northwestern Medicine Malnati Brain Tumor Institute of the Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Victor A Arrieta
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Northwestern Medicine Malnati Brain Tumor Institute of the Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Christopher J Chen
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
| | - Adam M Sonabend
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Northwestern Medicine Malnati Brain Tumor Institute of the Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Craig M Horbinski
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Northwestern Medicine Malnati Brain Tumor Institute of the Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Catalina Lee-Chang
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Northwestern Medicine Malnati Brain Tumor Institute of the Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Jason Miska
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Northwestern Medicine Malnati Brain Tumor Institute of the Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Maciej S Lesniak
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Northwestern Medicine Malnati Brain Tumor Institute of the Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Stephen Gottschalk
- Department of Bone Marrow Transplant and Cellular Therapy, St Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Irina V Balyasnikova
- Department of Neurological Surgery, Northwestern University, Chicago, Illinois, USA
- Northwestern Medicine Malnati Brain Tumor Institute of the Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| |
Collapse
|
2
|
Glasl S, Presser A, Gunbilig D, Werner I, Narantuya S, Haslinger E, Jurenitsch J, Kubelka W. Highly hydroxylated guaianolides of Achillea asiatica and Middle European Achillea species. Phytochemistry 2001; 58:1189-1194. [PMID: 11738405 DOI: 10.1016/s0031-9422(01)00281-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
From flower heads of Achillea asiatica (L.) Serg., three new guaianolides were isolated by repeated column chromatography and HPLC. The constitution and the stereochemistry of these new, labile compounds were determined by MS, one ((1)H, (13)C, selective (1)H-TOCSY and (1)H-NOESY) and two-dimensional NMR experiments ((1)H, (1)H-COSY, (1)H, (13)C-HSQC, (1)H, (13)C-HMBC). The substances were identified as 8 alpha-angeloxy-2 alpha, 4 alpha,10 beta-trihydroxy-6 beta H,7 alpha H, 11 beta H-1(5)-guaien-12,6 alpha-olide (1), 8 alpha-angeloxy-1 beta,2 beta:4 beta,5 beta-diepoxy-10 beta-hydroxy-6 beta H, 7 alpha H, 11 beta H-12,6 alpha-guaianolide (2) and 8 alpha-angeloxy-4 alpha,10 beta-dihydroxy-2-oxo-6 beta H,7 alpha H, 11 beta H-1(5)-guaien-12,6 alpha-olide (3). They were also detected in Middle European species (Achillea collina, Achillea ceretanica (2x and 4x), Achillea roseoalba, Achillea asplenifolia) by HPLC, TLC and off line MS and have not been described before. The possibility that these compounds might be products of an oxidation process is discussed.
Collapse
Affiliation(s)
- S Glasl
- Institute of Pharmacognosy, University of Vienna, Althanstrasse 14, A-1090 Wien, Austria.
| | | | | | | | | | | | | | | |
Collapse
|