(A) GBM8 neurosphere cultures: transfected with 50 nM lipofectamine plus no oligonucleotide (i, mock); FAM-labeled scrambled oligonucleotide (ii, v, scrambled); or FAM-labeled antagomir (iii, vi, miR-9–5p antisense); non-transfected GBM8 (iv). Micrographs taken 12 days after transfection (seeding at1 × 104 cells/ well). Scale bar, 200 μm.
(B) Metabolic activity (mean ± SD) of transfected cells measured by WST-1reduction assay.
(C) miR-9–5p levels (mean ± SD) in the cancer cell fraction of LGG tumors (astrocytomas or oligoastrocytomas), stratified by response to therapeutic intervention.