Transcriptomics

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MoS2 Reshapes the Tumor Microenvironment to Promote Tumor Cell Ferroptosis


ABSTRACT: MoS2 has found application in various biomedical fields, such as bioimaging and drug delivery. Nonetheless, utilizing MoS2 for anti-tumor therapy remains challenging, especially tumor immunotherapy. Macrophages, pivotal constituents of the tumor microenvironment, play a crucial role in driving tumor progression and chemoresistance. Modulating macrophages to reshape this microenvironment stands as a promising avenue for effective tumor treatment. In this study, we unveil a mechanism by which MoS2 induces the metamorphosis of macrophages from an M0 to an M1 phenotype, thus altering the tumor microenvironment. This transformation triggers pathways associated with inflammation within M1-type macrophages, leading to an upsurge in the expression of inflammatory molecules like IL1β. Macrophages activated by MoS2 exhibit a propensity to impede tumor cell proliferation. Through comprehensive RNA-sequencing analysis, we noted that MoS2 induces a greater enrichment of differentially expressed genes in the cytokine release pathway within macrophages. The excessive secretion of IL1β by MoS2-activated macrophages emerges as a pivotal catalyst, heightening ROS levels and decreasing GSH levels within tumor cells, ultimately culminating in ferroptosis. Therefore, we suggest MoS2 effectively reshapes the tumor microenvironment by steering macrophages toward releasing inflammatory molecules. The MoS2-triggered activation of macrophages, inducing the secretion of IL1β, emerges as a potent trigger for ferroptosis within tumor cells. Consequently, MoS2 holds substantial promise as an efficacious strategy for anti-tumor immunotherapy, achieved through the polarization of macrophages.

ORGANISM(S): Mus musculus

PROVIDER: GSE251769 | GEO | 2023/12/31

REPOSITORIES: GEO

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