type ii collagen  (Cusabio)

Journal: Journal of Translational Autoimmunity

Article Title: T cell proliferative response to a homocitrullinated peptide correlates with joint pathology in collagen induced arthritis

doi: 10.1016/j.jtauto.2025.100345

Figure Lengend Snippet: RA-Specific Serum IgG Antibodies in DBA/1J Mice. Sera were collected biweekly from DBA/1J mice immunized with bovine type II collagen (bCII) (arthritic: N = 9–18; non-arthritic: N = 17–37), or PBS (N = 14) and tested via indirect ELISA for A) anti-CitP, and B) anti-HomoCitP IgG antibodies. Graphs show the median [IQR] for each group, with a cut-off indicating the limit of detection (dashed line). Statistical analysis was performed using a mixed effects model with the Geisser-Greenhouse correction and Tukey's multiple comparisons test. The resulting p-values are indicated on the graphs.

Article Snippet: The anti-mCII ELISA kits were used according to manufacturer's protocol (2036T; Chondrex).

Techniques: Indirect ELISA

Journal: Acta Pharmaceutica Sinica. B

Article Title: Augmentation of PRDX1–DOK3 interaction alleviates rheumatoid arthritis progression by suppressing plasma cell differentiation

doi: 10.1016/j.apsb.2025.06.006

Figure Lengend Snippet: PRDX1-OE attenuates the disease progression of RA by inhibiting plasma cell differentiation. (A) The clinical arthritis severity score was assessed in WT and Prdx1 -OE mice immunized with collagen in complete Freund's adjuvant ( n = 6). (B) Representative images of paws from the WT and PRDX1-OE group. (C) Representative micro-CT images of paws from the WT and PRDX1-OE groups. (D) Joint destruction from the WT and PRDX1-OE groups was graded using CT score ( n = 3). (E) Representative images of H&E-stained sections of ankle joints from the WT and PRDX1-OE groups are shown. Scale bar, 500 μm. (F) Histopathology analysis and histological scoring were performed on ankle joints from the WT and PRDX1-OE groups ( n = 6). (G) Serum levels of IgG2A were analyzed by ELISA in WT and PRDX1-OE model groups ( n = 6). (H) The proportion of plasma cells in the spleen was analyzed by flow cytometry. (I) A quantitative analysis of plasma cell counts in the spleens of Prdx1 -OE and wild-type mice ( n = 6). (J) GSEA enrichment profiles of the B cell receptor pathway and CD40 pathway in the spleens of Prdx1 -OE and WT model mice. Data are shown as mean ± SEM, ∗ P < 0.05, ∗∗ P < 0.01, ∗∗∗ P < 0.001, ∗∗∗∗ P < 0.0001.

Article Snippet: The serum was subjected to calculate the concentrations of IgG2A using the Mouse anti-bovine type II collagen IgG2A antibody subtype ELISA kit with TMB (Chondrex, 20322T).

Techniques: Biomarker Discovery, Clinical Proteomics, Cell Differentiation, Adjuvant, Micro-CT, Staining, Histopathology, Enzyme-linked Immunosorbent Assay, Flow Cytometry

Journal: Acta Pharmaceutica Sinica. B

Article Title: Augmentation of PRDX1–DOK3 interaction alleviates rheumatoid arthritis progression by suppressing plasma cell differentiation

doi: 10.1016/j.apsb.2025.06.006

Figure Lengend Snippet: Salvianolic acid B prevents the progression of collagen-induced arthritis by enhancing the interaction between PRDX1 and DOK3. (A) Clinical scores of arthritis in mice treated with vehicle, 1.5 mg/kg TF, and 15 mg/kg or 30 mg/kg SAB, and immunized with collagen in complete Freund's adjuvant ( n = 6). (B) Representative micro-CT images of the hind paws from mice treated with vehicle, TF, and SAB. (C) Joint destruction was graded based on the CT score in B ( n = 3). (D, E) histological score of the inflammation area in mice treated with vehicle, TF, and SAB ( n = 6) (D) and representative images of hematoxylin and eosin (H&E)-stained paw sections (E). Scale bar, 100 μm. (F) Serum titer of IgG2A analyzed from vehicle, TF, and SAB by ELISA ( n = 6). (G, H) The frequency of plasma cells (G) and GC B cells (H) in the spleen from mice treated with vehicle, TF, and SAB was analyzed by flow cytometry ( n = 6). (I) GSEA enrichment profiles of the B cell receptor pathway and CD40 pathway in the SAB-H treatment and model groups. (J) Heatmap depicting the expression levels of the B cell receptor signaling pathway and RA defined by the differentially downregulated genes in the SAB-H treatment group compared to the WT model group. (K) The biological process analysis of B cells for downregulated genes in the SAB-H treatment group compared to the model group. (L) Representative immunofluorescence staining images of PRDX1 (green) and DOK3 (red) in the spleen from the model and SAB treatment groups. Scale bar, 50 μm. (M) Representative immunofluorescence staining images of CD19 (green), P-JNK (red) in the spleen from the model and SAB treatment groups. Scale bar, 50 μm. (N) Relative fluorescence intensity of stained PRDX1 and DOK3 in the spleen from the model and SAB treatment groups ( n = 3). (O) Relative fluorescence intensity of stained CD19 and P-JNK in the spleen from the model and SAB treatment groups ( n = 3). Data are presented as mean ± SEM. ∗ P < 0.05, ∗∗ P < 0.01, ∗∗∗ P < 0.001, ∗∗∗∗ P < 0.0001, and ns indicates no significance.

Article Snippet: The serum was subjected to calculate the concentrations of IgG2A using the Mouse anti-bovine type II collagen IgG2A antibody subtype ELISA kit with TMB (Chondrex, 20322T).

Techniques: Adjuvant, Micro-CT, Staining, Enzyme-linked Immunosorbent Assay, Clinical Proteomics, Flow Cytometry, Expressing, Immunofluorescence, Fluorescence