Article ; Online: Necrotic debris and STING exert therapeutically relevant effects on tumor cholesterol homeostasis.
Life science alliance
2022 Volume 5, Issue 3
Abstract: Malignant tumors commonly display necrosis, which invariably triggers an inflammatory response that supports tumor growth. However, the effect on tumor cells of necrotic debris, or damage-associated molecular patterns (DAMPs) released by dying cells is ... ...
Abstract | Malignant tumors commonly display necrosis, which invariably triggers an inflammatory response that supports tumor growth. However, the effect on tumor cells of necrotic debris, or damage-associated molecular patterns (DAMPs) released by dying cells is unknown. Here, we addressed the effect of DAMPs on primary Ewing sarcoma (EwS) cells and cell lines grown in 3D (spheroids) and 2D culture. We show that DAMPs promote the growth of EwS spheroids but not 2D cultures and that the underlying mechanism implicates an increase in cholesterol load in spheroids. In contrast, stimulation of the nucleic acid sensor signaling platform STING by its ligand cyclic GMP-AMP decreases the tumor cell cholesterol load and reduces their tumor initiating ability. Overexpression of STING or stimulation with cyclic GMP-AMP opposes the growth stimulatory effect of DAMPs and synergizes with the cholesterol synthesis inhibitor simvastatin to inhibit tumor growth. Our observations show that modulation of cholesterol homeostasis is a major effect of necrotic cell debris and STING and suggest that combining STING agonists with statins may help control tumor growth. |
---|---|
MeSH term(s) | Alarmins/metabolism ; Apoptosis ; Biomarkers ; Cell Line, Tumor ; Cholesterol/metabolism ; Disease Management ; Disease Susceptibility ; Gene Expression Regulation, Neoplastic ; Homeostasis ; Humans ; Lipid Metabolism ; Membrane Proteins/metabolism ; Necrosis/metabolism ; Neoplasms/etiology ; Neoplasms/metabolism ; Neoplasms/pathology ; Neoplasms/therapy ; Spheroids, Cellular ; Tumor Cells, Cultured |
Chemical Substances | Alarmins ; Biomarkers ; Membrane Proteins ; STING1 protein, human ; Cholesterol (97C5T2UQ7J) |
Language | English |
Publishing date | 2022-01-04 |
Publishing country | United States |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ISSN | 2575-1077 |
ISSN (online) | 2575-1077 |
DOI | 10.26508/lsa.202101256 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
More links
Kategorien
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.
Inter-library loan at ZB MED
Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.