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. 2016 Apr 5;7:11205. doi: 10.1038/ncomms11205

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(a) An experimental scheme for enforced sialylation. (b) LC-ESI-MS analysis of ACC4 and M2139 was performed to detect desialylated glycoforms (G0F, G1F and G2F) and sialylated glycoforms (G1FS1, G2FS1 and G2FS2) of IgG Fc glycans. To normalize the variability, summation of peak areas of all complex type N-glycans were deliberately set at 100%. (c) Antigen-binding ability of Sia (+) and control ACC4/M2139 was compared by ELISA. (d) An experimental scheme for CAIA. (e) Frequency (upper panel) and score (lower panel) of arthritis is plotted. Data for arthritis scores are shown as mean±s.d. (n=13 for ACC4/M2139 and n=10 for ACC4/M2139 Sia (+)). The data are representative of two independent experiments. (f) Histological analysis of joint inflammation at day 14 post-LPS injection. Paraffin sections of the limb were stained by HE (upper panel) and Safranin O/Fast green for cartilage (red) staining (lower panel). Scale bar, 60 μm.