P2X7:阻断结肠癌中囊泡依赖性转移的新治疗靶点:A2A/CD39/CD73轴的作用
P2X7 a new therapeutic target to block vesicle-dependent metastasis in colon carcinoma: Role of the A2A/CD39/CD73 axis.
作者信息
Pegoraro Anna, De Marchi Elena, Ruo Luigia, Zanoni Michele, Chioccioli Sofia, Caderni Giovanna, Alfieri Letizia, Grignolo Marianna, Ulivi Paola, Passardi Alessandro, Gallo Graziana, Antonioli Luca, Di Virgilio Francesco, Adinolfi Elena
机构信息
Department of Medical Sciences, Section of Experimental Medicine, University of Ferrara, Ferrara, Italy.
Biosciences Laboratory, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) "Dino Amadori", Meldola, Italy.
出版信息
Cell Death Dis. 2025 Aug 4;16(1):587. doi: 10.1038/s41419-025-07897-2.
Extracellular vesicle-driven cancer metastasis represents a therapeutic challenge due to the lack of effective blocking drugs. Our study shows that activation of the P2X7 receptor on colon carcinoma cells causes the release of vesicles carrying CD39 and CD73 ectonucleotidases. These vesicles increase ATP and adenosine levels and, when in vivo administered, significantly enhance colon carcinoma metastasis and circulating levels of vesicles after fourteen days from their injection. Blocking P2X7 prevents vesicular release and substantially reduces vesicle-mediated tumor spreading, positioning P2X7 as a promising therapeutic target for inhibiting extracellular vesicle-mediated dissemination in colon cancer. Additionally, these vesicles upregulate the expression of P2X7 and A2A receptors within the metastatic niche. Antagonists of P2X7 and A2A used alone or in combination effectively inhibit tumor growth in vivo, decreasing metastasis engraftment and IL-17 and IL-23 release. Interestingly, the levels of both cytokines were also reduced by combined P2X7 and A2A blockade in non-tumor-bearing mice. Moreover, P2X7 and A2A upraise in metastatic and APC-mutated colon carcinoma patients and in Apc-disrupted rats. Our findings shed light on the crosstalk of P2X7/CD73/CD39 and A2A in colon cancer metastasis. We propose a novel mechanism facilitating metastatic dissemination and an innovative therapeutic strategy to target receptor signaling and vesicular release.
由于缺乏有效的阻断药物,细胞外囊泡驱动的癌症转移是一项治疗挑战。我们的研究表明,结肠癌细胞上P2X7受体的激活会导致携带CD39和CD73外切核苷酸酶的囊泡释放。这些囊泡会增加ATP和腺苷水平,在体内给药时,从注射后十四天起,会显著增强结肠癌转移以及囊泡的循环水平。阻断P2X7可防止囊泡释放,并大幅减少囊泡介导的肿瘤扩散,这使得P2X7成为抑制结肠癌中细胞外囊泡介导的播散的一个有前景的治疗靶点。此外,这些囊泡会上调转移龛内P2X7和A2A受体的表达。单独或联合使用P2X7和A2A拮抗剂可有效抑制体内肿瘤生长,减少转移植入以及IL-17和IL-23的释放。有趣的是,在无肿瘤小鼠中,联合阻断P2X7和A2A也可降低这两种细胞因子的水平。此外,在转移性和APC突变的结肠癌患者以及Apc基因敲除的大鼠中,P2X7和A2A水平升高。我们的研究结果揭示了P2X7/CD73/CD39和A2A在结肠癌转移中的相互作用。我们提出了一种促进转移播散的新机制以及一种针对受体信号传导和囊泡释放的创新治疗策略。