Journal: The Journal of Biological Chemistry

Article Title: Inhibition of cell surface GRP78 on brain tumors reverses drug resistance and stops cancer stem cell expansion

doi: 10.1016/j.jbc.2026.111146

Figure Lengend Snippet: Cell surface GRP78 colocalizes with ROR1, Cripto, and PD-L1 on late-stage patient GBM tissues but not on normal brain cerebrum tissues. A, three brain tissue microarrays with patient core tissue samples of GBM and normal tissues (#T174T from Biomax.us.) were stained for GBM markers. B, one microarray was stained with 4′,6-diamidino-2-phenylindole (DAPI) ( blue -DNA), and antibodies to cell surface GRP78 ( green -FITC), ROR1 ( red -PE). The last column is an overlay of all three stains to show colocalization. Cores B2 (stage 4 GBM) and C7 (normal cerebrum) are pictured. C, a second microarray was stained with DAPI ( blue -DNA), and antibodies to cell surface GRP78 ( green -FITC), PD-L1 ( red -PE). The last column is an overlay of all three stains to show colocalization. Cores B6 (stage 4 GBM) and C5 (normal cerebrum) are pictured. D, a third microarray was stained with DAPI ( blue -DNA), and antibodies to cell surface GRP78 ( green -FITC), PD-L1 ( red -PE). The last column is an overlay of all three stains to show colocalization. Cores B6 (stage 4 GBM) and C5 (normal cerebrum) are pictured. Scale bars represent 400 μm (10×). All images are from the same magnification of (10×) 400 μm. GBM, glioblastoma multiforme; GRP78, glucose-regulated protein 78; PD-L1, programed death-ligand 1; ROR1, receptor tyrosine kinase–like orphan receptor-1.

Article Snippet: A, three brain tissue microarrays with patient core tissue samples of GBM and normal tissues (#T174T from Biomax.us.) were stained for GBM markers.

Techniques: Staining, Microarray