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Reshaping Prostate Tumor Microenvironment To Suppress Metastasis <i>via</i> Cancer-Associated Fibroblast Inactivation with Peptide-Assembly-Based Nanosystem

Jiayan LangCAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, ChinaXiao ZhaoCAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, ChinaYingqiu QiCAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, ChinaYinlong ZhangCAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, ChinaXuexiang HanCAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, ChinaYanping DingCAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, ChinaJiajing GuanCAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, ChinaTianjiao JiCAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, ChinaYing ZhaoCAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, ChinaGuangjun NieCAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China

2019en

ABI

Annotatsiya

Prostate cancer is one of the most common malignant tumors in men, and inhibiting metastasis is a key event but still a major challenge in prostate cancer treatment. Cancer-associated fibroblasts (CAFs) play an important role in prostate tumor metastasis by shaping the malignant tumor microenvironment. Herein, we constructed a CAF-targeting siRNA delivery system by loading the fibroblast activation protein-α (FAP-α) antibody onto the cell-penetrating peptide (CPP)-based nanoparticles, which specifically downregulated C–X–C motif chemokine ligand 12 (CXCL12) expression in CAFs. This regulation generated a series of changes through inactivating CAFs so that the malignant prostate tumor microenvironment was reshaped. The tumor cell invasion, migration, and tumor angiogenesis were significantly inhibited, which all contributed to the suppression of the metastasis of an orthotopic prostate tumor. This tumor microenvironment reshaping strategy via CAF targeting and inactivation provides an alternative approach for malignant prostate tumor metastasis inhibition.

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Identifikatorlar

DOI: 10.1021/acsnano.9b04857

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