Immunotherapy Resistance in Solid Tumors: Mechanisms and Potential Solutions
Overview
Affiliations
While the emergence of immunotherapies has fundamentally altered the management of solid tumors, cancers exploit many complex biological mechanisms that result in resistance to these agents. These encompass a broad range of cellular activities - from modification of traditional paradigms of immunity via antigen presentation and immunoregulation to metabolic modifications and manipulation of the tumor microenvironment. Intervening on these intricate processes may provide clinical benefit in patients with solid tumors by overcoming resistance to immunotherapies, which is why it has become an area of tremendous research interest with practice-changing implications. This review details the major ways cancers avoid both natural immunity and immunotherapies through primary (innate) and secondary (acquired) mechanisms of resistance, and it considers available and emerging therapeutic approaches to overcoming immunotherapy resistance.
Iturri L, Jouglar E, Gilbert C, Espenon J, Juchaux M, Prezado Y Clin Transl Radiat Oncol. 2025; 51:100911.
PMID: 39898330 PMC: 11783053. DOI: 10.1016/j.ctro.2025.100911.
Spatial immune heterogeneity in a mouse tumor model after immunotherapy.
Smahel M, Johari S, Smahelova J, Pfeiferova L, Nunvar J Cancer Sci. 2024; 116(3):622-632.
PMID: 39624899 PMC: 11875765. DOI: 10.1111/cas.16421.
Adoptive T cell therapies for solid tumors: T(I)ME is of the essence.
Amwas N, Chiu C, Gumber D, Wang L EBioMedicine. 2024; 109:105449.
PMID: 39504721 PMC: 11570776. DOI: 10.1016/j.ebiom.2024.105449.
Hepatocellular Carcinoma Immunotherapy: Predictors of Response, Issues, and Challenges.
Rizzo A, Brunetti O, Brandi G Int J Mol Sci. 2024; 25(20).
PMID: 39456872 PMC: 11507510. DOI: 10.3390/ijms252011091.
Chen Y, Wang Z, Zhang C, Su Y, Zhou T, Hu K Front Immunol. 2024; 15:1470071.
PMID: 39445013 PMC: 11496055. DOI: 10.3389/fimmu.2024.1470071.