Imaging DNA Repair After UV Irradiation Damage of Cancer Cells in Gelfoam® Histoculture
DNA damage repair in response to UVC irradiation was imaged in cancer cells growing in Gelfoam® histoculture. UVC-induced DNA damage repair was imaged with green fluorescent protein (GFP) fused to the DNA damage response (DDR)-related binding protein 53BP1 in MiaPaCa-2 human pancreatic cancer cells. Three-dimensional Gelfoam® histocultures and confocal imaging enabled 53BP1-GFP nuclear foci to be observed within 1 h after UVC irradiation, indicating the onset of DNA damage repair response. Induction of UV-induced 53BP1-GFP focus formation was limited up to a depth of 40 μm in Gelfoam® histoculture of MiaPaCa-2 cells, indicating this was the depth limit of UVC irradiation.
Key wordsCancer cells Gelfoam® Histoculture UV irradiation DNA damage repair 53PB1-GFP Imaging
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