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Sammanfattning

Glioblastoma (GBM) heterogeneity is the main obstacle to efficient treatment due to the existence of sub population of cells with increased tumorigenicity and network of tumor associated parenchymal cells in the tumor microenvironment. We previously demonstrated that mast cells (MCs) infiltrate mouse and human gliomas in response to variety of signals in a glioma grade-dependent manner. However, the role of MCs in glioma development and the mechanisms behind MCs-glioma cells interaction remain unidentified.In the present study, we show that MCs upon activation by glioma cells produce soluble factors including IL-6, which are documented to be involved in cancer-related activities. We observe 'tumor educated' MCs decrease glioma cell proliferation and migration, reduce self-renewal capacity and expression of stemness markers but in turn promote glioma cell differentiation. 'Tumor educated' MC derived mediators exert these effects via inactivation of STAT3 signaling pathway through GSK3 beta down-regulation. We identified 'tumor educated' MC derived IL-6 as one of the contributors among the complex mixture of MCs mediators, to be partially involved in the observed MC induced biological effect on glioma cells.Thus, MC mediated abolition of STAT3 signaling hampers glioma cell proliferation and migration by suppressing their stemness and inducing differentiation via down-regulation of GSK3 beta expression. Targeting newly identified inflammatory MC-STAT3 axis could contribute to patient tailored therapy and unveil potential future therapeutic opportunities for patients.

Nyckelord

Mast cell; Glioma; GSK3 beta; IL-6; STAT3

Publicerad i

Cellular Signalling
2017, volym: 37, sidor: 81-92
Utgivare: ELSEVIER SCIENCE INC

SLU författare

Globala målen (SDG)

SDG3 God hälsa och välbefinnande

UKÄ forskningsämne

Cell- och molekylärbiologi

Publikationens identifierare

  • DOI: https://doi.org/10.1016/j.cellsig.2017.06.004

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/93056