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J Liposome Res ; 34(3): 464-474, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38196168

RESUMEN

In different types of cancer treatments, cancer-specific T cells are required for effective anticancer immunity, which has a central role in cancer immunotherapy. However, due to the multiple inhibitions of CD8+ T cells by tumor-related immune cells, CD8+ T-cell mediated antitumor immunotherapy has not achieved breakthrough progress in the treatment of solid tumors. Receptors for sialic acid (SA) are highly expressed in tumor-associated immune cells, so SA-modified nanoparticles are a drug delivery nanoplatform using tumor-associated immune cells as vehicles. To relieve the multiple inhibitions of CD8+ T cells by tumor-associated immune cells, we prepared SA-modified doxorubicin liposomes (SL-DOX, Scheme 1A). In our study, free SA decreased the toxicity of SL-DOX to tumor-associated immune cells. Compared with common liposomes, SL-DOX could inhibit tumor growth more effectively. It is worth noting that SL-DOX could not only kill tumor-related neutrophils and monocytes to relieve the multiple inhibitions of CD8+ T cells but also induce immunogenic death of tumor cells to promote the infiltration and differentiation of CD8+ T cells (Scheme 1B). Therefore, SL-DOX has potential value for the clinical therapeutic effect of CD8+ T cells mediating anti-tumor immunotherapy.


Asunto(s)
Linfocitos T CD8-positivos , Doxorrubicina , Liposomas , Ácido N-Acetilneuramínico , Doxorrubicina/farmacología , Doxorrubicina/química , Doxorrubicina/análogos & derivados , Linfocitos T CD8-positivos/inmunología , Animales , Ratones , Ácido N-Acetilneuramínico/química , Liposomas/química , Humanos , Inmunoterapia/métodos , Antibióticos Antineoplásicos/farmacología , Antibióticos Antineoplásicos/química , Línea Celular Tumoral , Ratones Endogámicos C57BL , Tamaño de la Partícula , Femenino , Polietilenglicoles
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