Immunocytochemistry:
On HeLa and Cos7 cells fixed with paraformaldehyde. 8-oxoguanine has been localized to the nucleus in nutrient-deprived cells.
ELISA:
Cell grown in slides were extracted twice for 30 sec with cold 560nM NaCl;0.1% (v/v) Triton X-100;0.02% (w/v) SDS;10mM phosphate buffer pH 7.4 and fixed with freshly prepared 4% PFA for 5-20 minutes at room temperature. {Conlon, KA et al (2000) J. Histotechnology 23(1):37-44}. Typical staining shows that nuclei from extracted cells have define periphery and areas of condensed chromatin. Clone 483.15 staining showed specific but faint nuclear fluorescence staining in cells incubated in supplemented DMEM, but in cells incubated in nutrient-free defined solt solution (NFDSS) {1.8mM calcium chloride, 110mM NaCl, 44mM sodium biocarbonate, pH 7.5} showed strong nuclear fluorescence staining that appeared punctate and gernerally distributed. Fluorescence staining disappears to background levels in cells incubated in nutrient medias even after initial NFDSS treatments {Conlon et al}.
A previous lot of this antibody was used in an ELISA assay.
Optimal working dilutions must be determined by end user.