Application of Nano-Delivery Technology in Tumor Immunotherapy

Immunotherapy has made great progress in cancer treatment, showing amazing results in clinical applications. However, a number of factors contribute to a lower response to immunotherapy in some cancer patients. T cells play an important role in tumor immune response. However, it is difficult to achieve the directed infiltration of T cells by current methods. In addition, the expression of non-specific drugs in normal tissues may cause serious adverse reactions. Now a new strategy is needed to increase the infiltration of T cells, increase the specificity of drug expression, improve the therapeutic effect and reduce the risk of adverse reactions. Nanocarriers can be enriched in tumor tissues through a series of effects, and tumor-specific genes can ensure that drugs will not work in normal tissues, so nanoparticles can be used to encapsulate tumor-specific gene nanocarriers to achieve precise treatment. In this paper, the types of nanocarriers and gene drugs and the application of this technology in practical research are introduced in detail. Finally, the prospect and challenge of future development are expressed.