Abstract
Background: B7H3 is a co-stimulatory molecule for immune reactions found on the surface
of tumor cells in a wide variety of tumors. Preclinical and clinical studies have reported it as a tumor target
towards which various immunotherapy modalities could be directed. So far, good results have been
obtained in hematological neoplasms; however, a contrasting situation is evident in solid tumors, including
those of the CNS, which show high refractoriness to current treatments. The appearance of cellular
immunotherapies has transformed oncology due to the reinforcement of the immune response that is
compromised in people with cancer.
Objective: This article aims to review the literature to describe the advancement in knowledge on
B7H3 as a target of CAR-T cells in pediatric gliomas to consider them as an alternative in the treatment
of these patients.
Results: Although B7H3 is considered a suitable candidate as a target agent for various immunotherapy
techniques, there are still limitations in using CAR-T cells to achieve the desired success.
Conclusion: Results obtained with CAR-T cells can be further improved by the suggested proposals;
therefore, more clinical trials are needed to study this new therapy in children with gliomas.
[1]
Majzner RG, Theruvath JL, Nellan A, et al. CAR-T Cells targeting B7-H3, a pan-cancer antigen, demonstrate potent preclinical activity against pediatric solid tumors and brain tumors. Clin Cancer Res 2019; 25: 2560-74.
[3]
Chatwin HV, Cruz J, Green AL. Pediatric high-grade glioma: Moving toward subtype-specific multimodal therapy. FEBS J 2021; 288: 6127-41.
[7]
Louis DN, Perry A, Wesseling P. The 2021 WHO classification of tumors of the central nervous system: A summary. Neuro Oncol 2021; 23: 1231-51.
[30]
Choi BD, Maus MV, June CH, Sampson JH. Immunotherapy for glioblastoma: Adoptive T-cell strategies. Clin Cancer Res 2019; 25: 2042-8.
[73]
Picarda E, Ohaegbulam KC, Zang X. Molecular pathways: Targeting B7-H3 (CD276) for human cancer immunotherapy. Clin Cancer Res 2016; 22: 3431.
[87]
Kontos F, Michelakos T, Kurokawa T, et al. B7-H3: An attractive target for antibody-based immunotherapy. Clin Cancer Res 2021; 27: 1227-35.
[92]
Chang L. Targeting CD276 (B7H3) Positive Solid Tumors by 4SCAR276 2020.NCT 04432649,
[93]
Gardner R. Study of B7H3 specific CART cell locorregional immunotherapy for diffuse intrinsic pontine glioma/diffuse midline glioma and recurrent or refractary pediatric central nervous system tummors 2019.NCT 04185038,
[105]
Murty S, Haile ST, Beinat C, et al. Intravital imaging reveals synergistic effect of CAR-T-cells and radiation therapy in a preclinical immunocompetent glioblastoma model. OncoImmunology 2020; 9: 1757360.
[112]
Caruana I, Savoldo B, Hoyos V, Weber G, Liu H, Kim ES. Heparanase promotes tumor infiltration and antitumor activity of CAR-redirected T lymphocytes. Nat Med 2015; 21: 524-9.