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Research Article: Light-Assisted “Nano-Neutrophils” with High Drug Loading for Targeted Cancer Therapy

Date Published: 2023-11-09

Abstract:
Breast cancer is the most common malignant tumor in women worldwide, where systemic metastasis, such as bone or lung metastasis, is the main cause of mortality., Although chemotherapy and surgical resection have advanced in cancer treatment, side effects and unsatisfactory therapeutic efficacy still remain in clinical settings., In recent years, nanomedicine has emerged as a promising alternative for cancer theranostics based on its remarkable characteristics, including safety, controlled drug release, and targeted drug delivery., Nanomedicine can provide targeted delivery of drugs to tumors through the enhanced permeability and retention (EPR) effect and ligand-mediated active targeting. However, the outcomes are far from satisfactory due to tumor heterogeneity, complex physiological microenvironment, and limited differences in receptors between tumor and normal cells. The ability to broadcast precise signals in biological systems provides new opportunities for effective drug delivery., Chronic inflammation serves as a persistent signal in tumors that provokes an immune response for the recruitment of immune cells to the tumor site., Among the recruited immune cells, neutrophils (NEs) are the first leukocytes to be recruited to the inflammatory tumor sites,– so they can be used as natural carriers for targeted delivery of cargo to tumor sites. However, as terminal-differentiated cells, the short lifespan of neutrophils makes them difficult to culture in vitro, thus limiting the direct application of neutrophils as drug delivery vehicles.– Extensive evidences have revealed that the majority of cells demonstrate targeting ability derived from their cell membrane,, which provides an alternative strategy for targeted drug delivery via cell membrane-coated biomimetic carriers., Consequently, biomimetic drug delivery systems with neutrophil membrane coating are available for targeted drug delivery to inflammatory tumor sites.–

Introduction:
Breast cancer is the most common malignant tumor in women worldwide, where systemic metastasis, such as bone or lung metastasis, is the main cause of mortality. , Although chemotherapy and surgical resection have advanced in cancer treatment, side effects and unsatisfactory therapeutic efficacy still remain in clinical settings. , In recent years, nanomedicine has emerged as a promising alternative for cancer theranostics based on its remarkable characteristics, including safety, controlled drug release, and…

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