CD4 + T cell immunity against cutaneous melanoma encompasses multifaceted MHC II–dependent responses

Author:

Bawden Emma G.12ORCID,Wagner Teagan1ORCID,Schröder Jan3ORCID,Effern Maike12ORCID,Hinze Daniel2,Newland Lewis12ORCID,Attrill Grace H.456ORCID,Lee Ariane R.1ORCID,Engel Sven1ORCID,Freestone David1ORCID,de Lima Moreira Marcela1ORCID,Gressier Elise1ORCID,McBain Nathan1ORCID,Bachem Annabell1ORCID,Haque Ashraful1ORCID,Dong Ruining37ORCID,Ferguson Angela L.5689ORCID,Edwards Jarem J.456,Ferguson Peter M.451011ORCID,Scolyer Richard A.4561011ORCID,Wilmott James S.456ORCID,Jewell Christopher M.12131415ORCID,Brooks Andrew G.1ORCID,Gyorki David E.1617,Palendira Umaimainthan456ORCID,Bedoui Sammy1,Waithman Jason1819ORCID,Hochheiser Katharina117ORCID,Hölzel Michael2ORCID,Gebhardt Thomas1ORCID

Affiliation:

1. Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia.

2. Institute of Experimental Oncology (IEO), Medical Faculty, University Hospital Bonn, University of Bonn, Bonn 53105, Germany.

3. Computational Sciences Initiative, Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia.

4. Melanoma Institute Australia, University of Sydney, Sydney, NSW, Australia.

5. Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia.

6. Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia.

7. Department of Clinical Pathology and Centre for Cancer Research, University of Melbourne, Melbourne, VIC, Australia.

8. Centenary Institute, University of Sydney, Sydney, NSW, Australia.

9. Infection, Immunity and Inflammation theme, School of Medical Sciences, Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia.

10. Department of Tissue Oncology and Diagnostic Pathology, Royal Prince Alfred Hospital, Sydney, NSW, Australia.

11. NSW Health Pathology, Sydney, NSW, Australia.

12. Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA.

13. United States Department of Veterans Affairs, VA Maryland Health Care System, Baltimore, MD, USA.

14. Robert E. Fischell Institute for Biomedical Devices, College Park, MD, USA.

15. Marlene and Stewart Greenebaum Cancer Center, Baltimore, MD, USA.

16. Division of Cancer Surgery, Peter MacCallum Cancer Centre and Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia.

17. Peter MacCallum Cancer Centre Melbourne, Melbourne, VIC, Australia.

18. Telethon Kids Institute, University of Western Australia, Perth, WA, Australia.

19. School of Biomedical Sciences, University of Western Australia, Perth, WA, Australia.

Abstract

Whereas CD4 + T cells conventionally mediate antitumor immunity by providing help to CD8 + T cells, recent clinical studies have implied an important role for cytotoxic CD4 + T cells in cancer immunity. Using an orthotopic melanoma model, we provide a detailed account of antitumoral CD4 + T cell responses and their regulation by major histocompatibility complex class II (MHC II) in the skin. Intravital imaging revealed prominent interactions of CD4 + T cells with tumor debris-laden MHC II + host antigen-presenting cells that accumulated around tumor cell nests, although direct recognition of MHC II + melanoma cells alone could also promote CD4 + T cell control. CD4 + T cells stably suppressed or eradicated tumors even in the absence of other lymphocytes by using tumor necrosis factor–α and Fas ligand (FasL) but not perforin-mediated cytotoxicity. Interferon-γ was critical for protection, acting both directly on melanoma cells and via induction of nitric oxide synthase in myeloid cells. Our results illustrate multifaceted and context-specific aspects of MHC II–dependent CD4 + T cell immunity against cutaneous melanoma, emphasizing modulation of this axis as a potential avenue for immunotherapies.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

General Medicine,Immunology

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