PTPRM methylation induced by FN1 promotes the development of glioblastoma by activating STAT3 signalling.

ABSTRACT:

Context

The phosphorylation of signal transducer and activator of transcription protein 3 (STAT3) is up-regulated in glioblastoma (GBM) cells and is regulated by protein tyrosine phosphatase receptor type M (PTPRM). Fibronectin-1 (FN1) is also reported to be up-regulated in GBM.

Objective

We explored the role of FN1-induced PTPRM methylation in GBM.

Materials and methods

The lentivirus particles of oe-PTPRM, sh-PTPRM, oe-FN1, sh-FN1, or their negative controls (NSCs) were transfected into GBM cells with or without stattic (0.5 μM, 24 h) or 5-aza (1 μM, 0, 2, 4 h) treatments. Methylation-specific PCR was performed to detect PTPRM methylation levels.

Results

PTPRM was down-regulated (0.373 ± 0.124- and 0.455 ± 0.109-fold), FN1 and p-STAT3 were up-regulated (p<

SUBMITTER: Song J 

PROVIDER: S-EPMC8259858 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature