Moderate expression of CD39 in GPC3-CAR-T cells shows high efficacy against hepatocellular carcinoma
Fan Zou , Jialiang Wei , Jialang Zhuang , Yafang Liu , Jizhou Tan , Xianzhang Huang , Ting Liu
Front. Med. ›› 2024, Vol. 18 ›› Issue (4) : 708 -720.
Moderate expression of CD39 in GPC3-CAR-T cells shows high efficacy against hepatocellular carcinoma
CD39 serves as a crucial biomarker for neoantigen-specific CD8+ T cells and is associated with antitumor activity and exhaustion. However, the relationship between CD39 expression levels and the function of chimeric antigen receptor T (CAR-T) cells remains controversial. This study aimed to investigate the role of CD39 in the functional performance of CAR-T cells against hepatocellular carcinoma (HCC) and explore the therapeutic potential of CD39 modulators, such as mitochondrial division inhibitor-1 (mdivi-1), or knockdown CD39 through short hairpin RNA. Our findings demonstrated that glypican-3-CAR-T cells with moderate CD39 expression exhibited a strong antitumor activity, while high and low levels of CD39 led to an impaired cellular function. Methods modulating the proportion of CD39 intermediate (CD39int)-phenotype CAR-T cells such as mdivi-1 and CD39 knockdown enhanced and impaired T cell function, respectively. The combination of mdivi-1 and CD39 knockdown in CAR-T cells yielded the highest proportion of infiltrated CD39int CAR-T cells and demonstrated a robust antitumor activity in vivo. In conclusion, this study revealed the crucial role of CD39 in CAR-T cell function, demonstrated the potential therapeutic efficacy of combining mdivi-1 with CD39 knockdown in HCC, and provided a novel treatment strategy for HCC patients in the field of cellular immunotherapy.
CD39 / CAR-T cells / mdivi-1 / hepatocellular carcinoma / antitumor activity
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Higher Education Press
Supplementary files
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