| cAMP | cyclic AMP |
| PKA | Protein kinase A, cAMP-dependent protein kinase |
| DMEM | Dulbecco Modified Eagle’s Medium |
| GFAP | Glial fibrillary acidic protein |
| IBMX | Isobutylmethylxantine |
| GBM | Glioblastoma multiforme |
| R | Regulatory subunits of cAMP dependent protein kinases |