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Figure . SDS-PAGE
Figure . Western Blot
Figure. Cell proliferation of Raji cells after stimulated with GP39.Glycoprotein 39, Cartilage (GP39) also known as Chitinase-3-like protein 1 (CHI3L1) is a secreted glycoprotein that is approximately 40kDa in size that in humans is encoded by the CHI3L1 gene. GP39 plays a role in cancer cell proliferation, survival, invasiveness and in the regulation of cell-matrix interactions. To test the effect of GP39 on cell proliferation, Raji cells were seeded into triplicate wells of 96-well plates at a density of 5,000 cells/well with 1% serum standard 1640 which contains various concentrations of recombinant human GP39. After incubated for 5 days, cells were observed by inverted microscope and cell proliferation was measured by Cell Counting Kit-8 (CCK-8). Briefly, 10µL of CCK-8 solution was added to each well of the plate, then the absorbance at 450nm was measured using a microplate reader after incubating the plate for 1-4 hours at 37℃. Proliferation of Raji cells after incubation with GP39 for 5 days observed by inverted microscope was shown in Figure 1. Cell viability was assessed by CCK-8 (Cell Counting Kit-8 ) assay after incubation with recombinant GP39 for 5 days. The result was shown in Figure 2. It was obvious that GP39 significantly increased cell viability of Raji cells.(A) Raji cells cultured in 1640, stimulated with 10ng/mL GP39 for 5 days; (B) Unstimulated Raji cells cultured in 1640 for 5 days.