# Immunocyte Membrane-Coated Nanoparticles for Cancer Immunotherapy

## TL;DR

This paper reviews immunocyte membrane-coated nanoparticles as a promising approach to improve cancer immunotherapy by leveraging natural cell membrane properties for better drug delivery.

## Contribution

The paper provides a comprehensive review of immunocyte membrane-coated nanoparticles, highlighting their advantages and challenges in cancer immunotherapy.

## Key findings

- Immunocyte membrane-coated nanoparticles offer biocompatibility and protection from immune recognition.
- These nanoparticles face challenges in large-scale preparation and application.
- They have potential to enhance targeted drug delivery and tumor immunotherapy effectiveness.

## Abstract

Cancer immunotherapy is a breakthrough in cancer treatment. Unfortunately, despite the encouraging results in clinical treatment, cancer immunotherapy such as CAR-T, PD-1 still faces lots of challenges. Therefore, it is necessary to develop new methods to improve the effectiveness and safety of tumor immunotherapy. In recent years, cell membrane-coated nanomaterial is one of the most promising drug delivery systems and is receiving a great deal of attention due to its naturally biocompatible characteristics. This review summarizes the latest research progress, the advantages, the disadvantages, and the application of immunocyte membrane-coated nanoparticles in cancer immunotherapy.

Despite the advances in surface bioconjugation of synthetic nanoparticles for targeted drug delivery, simple biological functionalization is still insufficient to replicate complex intercellular interactions naturally. Therefore, these foreign nanoparticles are inevitably exposed to the immune system, which results in phagocytosis by the reticuloendothelial system and thus, loss of their biological significance. Immunocyte membranes play a key role in intercellular interactions, and can protect foreign nanomaterials as a natural barrier. Therefore, biomimetic nanotechnology based on cell membranes has developed rapidly in recent years. This paper summarizes the development of immunocyte membrane-coated nanoparticles in the immunotherapy of tumors. We will introduce several immunocyte membrane-coated nanocarriers and review the challenges to their large-scale preparation and application.