一种用于抑制乳腺癌糖酵解和转移的深层肿瘤穿透纳米平台。

A deep tumor penetration nanoplatform for glycolysis inhibition and antimetastasis of breast cancer.

机构信息

Zhengzhou University School of Pharmaceutical Sciences, Zhengzhou, China.

出版信息

J Mater Chem B. 2022 Jun 8;10(22):4306-4320. doi: 10.1039/d1tb01759d.

Abstract

The poor penetration into deep tumor tissues of nanomedicines could not inhibit the production of lactic acid by deep tumor glycolysis, which leads to the accumulation of lactic acid and promotes tumor metastasis. In order to increase tumor penetration, it remains challenging to avoid tumor metastasis by the direct degradation of the extracellular matrix (ECM). Herein, in order to increase tumor penetration, a nano-platform, which can reduce extracellular matrix (ECM) production, and inhibit the glycolysis of deep tumors by releasing ethylenediaminetetraacetic acid (EDTA) is reported. In this design, EDTA and indocyanine green (ICG) are encapsulated in the liposome by a thin-film hydration method, and folic acid (FA) and the polyethyleneimine polymer (FA-PEI) are applied to coat the surface of liposomes through electrostatic interactions, and the FA-EDTA/ICG-Lip nanoparticles are obtained. FA-EDTA/ICG-Lip NPs can release EDTA and ICG in lysosomes (pH 4.5) to reduce ECM production by down-regulating transforming growth factor β (TGF-β) and activating an immune response by inducing tumor cell immunogenic cell death (ICD), respectively. Simultaneously, EDTA inhibits glycolysis of deep tumors by chelating Mg. By avoiding tumor metastasis, the strategy of indirectly reducing ECM production is demonstrated to enhance tumor penetration and inhibit deep tumor glycolysis.

摘要

纳米药物在深部肿瘤组织中的渗透能力较差,无法抑制深部肿瘤糖酵解产生的乳酸积累,从而促进肿瘤转移。为了增加肿瘤的穿透性,通过直接降解细胞外基质(ECM)来避免肿瘤转移仍然具有挑战性。在此,为了增加肿瘤的穿透性,报道了一种纳米平台,该平台可以通过释放乙二胺四乙酸(EDTA)来减少细胞外基质(ECM)的产生,并抑制深部肿瘤的糖酵解。在该设计中,EDTA 和吲哚菁绿(ICG)通过薄膜水化法包封在脂质体中,并用静电相互作用将叶酸(FA)和聚乙烯亚胺聚合物(FA-PEI)应用于脂质体表面进行包覆,得到 FA-EDTA/ICG-Lip 纳米颗粒。FA-EDTA/ICG-Lip NPs 可以在溶酶体(pH 4.5)中释放 EDTA 和 ICG,通过下调转化生长因子β(TGF-β)来减少 ECM 的产生,并通过诱导肿瘤细胞免疫原性细胞死亡(ICD)激活免疫反应。同时,EDTA 通过螯合 Mg 抑制深部肿瘤的糖酵解。通过避免肿瘤转移,该策略通过间接减少 ECM 产生来增强肿瘤穿透性并抑制深部肿瘤糖酵解。

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