articleAdvanced MaterialsJan 22, 2022Closed access

Biomimetic Nanoerythrosome‐Coated Aptamer–DNA Tetrahedron/Maytansine Conjugates: pH‐Responsive and Targeted Cytotoxicity for HER2‐Positive Breast Cancer

Sichuan University · State Key Laboratory of Oral Diseases · +1 more institution

PubMed
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Abstract

DNA materials have emerged as potential nanocarriers for targeted cancer therapy to precisely deliver cargos with specific purposes. The short half-life and low bioavailability of DNA materials due to their interception by the reticuloendothelial system and blood clearance further limit their clinical translation. This study employs an HER2-targeted DNA-aptamer-modified DNA tetrahedron (HApt-tFNA) as a drug delivery system, and combines maytansine (DM1) to develop the HApt-DNA tetrahedron/DM1 conjugate (HApt-tFNA@DM1, HTD, HApDC) for targeted therapy of HER2-positive cancer. To optimize the pharmacokinetics and tumor-aggregation of HTD, a biomimetic camouflage is applied to embed HTD. The biomimetic camouflage…

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