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Efficacy of B7-H3-Redirected BiTE and CAR-T Immunotherapies Against Extranodal Nasal Natural Killer/T Cell Lymphoma.


ABSTRACT: Extranodal nasal natural killer (NK)/T cell lymphoma (ENKTCL) is a rare but highly aggressive subtype of non-Hodgkin lymphoma (NHL). Nevertheless, despite extensive research, the estimated 5-year overall survival of affected patients remains low. Therefore, new treatment strategies are needed urgently. Recent advances in immunotherapy have the potential to broaden the applications of chimeric antigen receptor-modified T (CAR-T) cells and the bispecific T-cell engaging (BiTE) antibody. Here, we screened a panel of biomarkers including the B7-H3, CD70, TIM-3, VISTA, ICAM-1, and PD-1 in NKTCL cell lines. As a result, we found for the first time that B7-H3 was highly and homogeneously expressed in these cells. Consequently, we constructed a novel anti-B7-H3/CD3 BiTE antibody and B7-H3-redirected CAR-T cells, and evaluated their efficacy against NKTCL cel lines both in vitro and in vivo. Notably, we found that both anti-B7-H3/CD3 BiTE and B7-H3-redirected CAR-T cells effectively targeted and killed NKTCL cells in vitro, and suppressed the growth of NKTCL tumors in NSG mouse models. Thus, B7-H3 might be a promising therapeutic target for treating patients with NKTCL tumors.

SUBMITTER: Zheng M 

PROVIDER: S-EPMC7160598 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Efficacy of B7-H3-Redirected BiTE and CAR-T Immunotherapies Against Extranodal Nasal Natural Killer/T Cell Lymphoma.

Zheng Meijun M   Yu Lingyu L   Hu Juanjuan J   Zhang Zongliang Z   Wang Haiyang H   Lu Dan D   Tang Xin X   Huang Jianhan J   Zhong Kunhong K   Wang Zeng Z   Li Yisong Y   Guo Gang G   Liu Shixi S   Tong Aiping A   Yang Hui H  

Translational oncology 20200413 5


Extranodal nasal natural killer (NK)/T cell lymphoma (ENKTCL) is a rare but highly aggressive subtype of non-Hodgkin lymphoma (NHL). Nevertheless, despite extensive research, the estimated 5-year overall survival of affected patients remains low. Therefore, new treatment strategies are needed urgently. Recent advances in immunotherapy have the potential to broaden the applications of chimeric antigen receptor-modified T (CAR-T) cells and the bispecific T-cell engaging (BiTE) antibody. Here, we s  ...[more]

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