Journal: bioRxiv

Article Title: Complement inhibition by C3-siRNA treatment prevents AChR loss and reduces complement activation in the rat Passive Transfer Myasthenia Gravis (PTMG)

doi: 10.1101/2025.08.31.673367

Figure Lengend Snippet: A) After baseline measurements on day 0, subcutaneous treatment injections were administered on day 1 and 8. Intermediate testing and blood collection were performed on day 4, 7 and 11 (not shown). On day 15, indicated with a red arrow, PTMG was induced using mAb35, while non-MG animals received a saline injection of the same volume. B-C) Plasma C3 expression was reduced by the sc administration of C3-siRNA at various dose levels in B) non-MG animals and C) PTMG animals. For animals receiving 2 x 30 mg/kg treatment, doses were administered on days 1 and 8. For animals receiving 1 x 10 or 1 x 30 mg/kg doses, administration occurred on day 8, as indicated by the black arrows on the graphs. Saline-treated animals showed no significant change in C3 levels over time. Group averages are shown. D) Plasma C3 level changes in individual treatment groups on day 17, normalized to baseline levels on day 0. Individual plasma C3 levels per animal are shown. Statistical analysis was performed with Two-Way ANOVA (B-D), followed by One-Way ANOVA and post-hoc Bonferroni’s multiple comparison test (D); α=0.05; ****p<0.0001. A) Created in BioRender. Schöttler, A. (2025) https://BioRender.com/b4xxodd .

Article Snippet: Next, plates were again washed and 25 μl/well of primary detection goat anti-C3-Biotin antibody ( :1000 in 1% Blocker A buffer, Origene #AP21439BT-N) was added and incubated for 1 h at RT with shaking.

Techniques: Saline, Injection, Clinical Proteomics, Expressing, Comparison

Journal: bioRxiv

Article Title: Complement inhibition by C3-siRNA treatment prevents AChR loss and reduces complement activation in the rat Passive Transfer Myasthenia Gravis (PTMG)

doi: 10.1101/2025.08.31.673367

Figure Lengend Snippet: C3 protein levels in plasma of healthy animals receiving a single treatment injection to establish the dose range of C3-siRNA for the PTMG study. After baseline measurements on day 0, C3-siRNA was administered on day 1 (black arrow) and plasma C3 protein levels analyzed on days 3, 8, 15, 22, and 29. Per group N=3. Group averages are shown.

Article Snippet: Next, plates were again washed and 25 μl/well of primary detection goat anti-C3-Biotin antibody ( :1000 in 1% Blocker A buffer, Origene #AP21439BT-N) was added and incubated for 1 h at RT with shaking.

Techniques: Clinical Proteomics, Injection

Journal: bioRxiv

Article Title: Complement inhibition by C3-siRNA treatment prevents AChR loss and reduces complement activation in the rat Passive Transfer Myasthenia Gravis (PTMG)

doi: 10.1101/2025.08.31.673367

Figure Lengend Snippet: C3 protein levels in plasma of healthy animals receiving three consecutive treatment injections, with a cumulative dose equal to a single injection as shown in . After baseline measurements on day 0, C3-siRNA was administered on day 1, 2, and 3 (black arrows) and plasma C3 protein levels analyzed on day 3, 8, 15, 22 and 29. Per group N=3. Group averages are shown.

Article Snippet: Next, plates were again washed and 25 μl/well of primary detection goat anti-C3-Biotin antibody ( :1000 in 1% Blocker A buffer, Origene #AP21439BT-N) was added and incubated for 1 h at RT with shaking.

Techniques: Clinical Proteomics, Injection

Journal: bioRxiv

Article Title: Complement inhibition by C3-siRNA treatment prevents AChR loss and reduces complement activation in the rat Passive Transfer Myasthenia Gravis (PTMG)

doi: 10.1101/2025.08.31.673367

Figure Lengend Snippet: Three days after treatment injection, hepatic C3 mRNA expression was significantly repressed in all C3-siRNA treated animals (left). 30 days after C3-siRNA injection, the expression was still reduced to 50% and ca. 25% in animals that received 10 or 30 mg/kg C3-siRNA (single and cumulative) compared to control animals. Each dot indicates one animal. Statistical analysis as performed using One-Way ANOVA with post-hoc Bonferroni’s multiple comparison test; α=0.05; **p=0.003, ***p<0.0004, ****p<0.0001.

Article Snippet: Next, plates were again washed and 25 μl/well of primary detection goat anti-C3-Biotin antibody ( :1000 in 1% Blocker A buffer, Origene #AP21439BT-N) was added and incubated for 1 h at RT with shaking.

Techniques: Injection, Expressing, Control, Comparison

Journal: bioRxiv

Article Title: Complement inhibition by C3-siRNA treatment prevents AChR loss and reduces complement activation in the rat Passive Transfer Myasthenia Gravis (PTMG)

doi: 10.1101/2025.08.31.673367

Figure Lengend Snippet: One PTMG animal treated with 30 mg/kg C3-siRNA showed no siRNA in the liver. Assuming a misinjection of C3-siRNA, this animal was excluded from the analysis. Each dot indicates one animal. Statistical analysis was performed using One-Way ANOVA with post-hoc Bonferroni’s multiple comparison test; α=0.05; ***p=0.0009, ****p<0.0001.

Article Snippet: Next, plates were again washed and 25 μl/well of primary detection goat anti-C3-Biotin antibody ( :1000 in 1% Blocker A buffer, Origene #AP21439BT-N) was added and incubated for 1 h at RT with shaking.

Techniques: Comparison

Journal: bioRxiv

Article Title: Complement inhibition by C3-siRNA treatment prevents AChR loss and reduces complement activation in the rat Passive Transfer Myasthenia Gravis (PTMG)

doi: 10.1101/2025.08.31.673367

Figure Lengend Snippet: A) Grip strength decreased in PTMG animals after disease induction (red arrow) with a dose-dependent effect of the C3-siRNA treatment. B) Grip strength on day 17 with non-MG animals pooled into one group. C) Disease scoring increased in PTMG animals after disease induction (red arrow), with an evident dose dependent effect of the C3-siRNA treatment. D) Disease score on day 17 with non-MG animals pooled into one group. In A) and C) group averages are shown. In B) and D) each dot represents one individual animal; horizontal bars indicate group means. Statistical analysis was performed with Two-Way ANOVA (A-C), followed by One-Way ANOVA and post-hoc Bonferroni’s multiple comparison test (B) or Kruskal-Wallis test (D); α=0.05; *p=0.0408, **p=0.0021, ****p<0.0001.

Article Snippet: Next, plates were again washed and 25 μl/well of primary detection goat anti-C3-Biotin antibody ( :1000 in 1% Blocker A buffer, Origene #AP21439BT-N) was added and incubated for 1 h at RT with shaking.

Techniques: Comparison

Journal: International Journal of Nanomedicine

Article Title: Doxorubicin Delivered Using Nanoparticles Camouflaged with Mesenchymal Stem Cell Membranes to Treat Colon Cancer

doi: 10.2147/IJN.S242787

Figure Lengend Snippet: Biological responses in vitro ( A ) cytotoxicity of free DOX, DOX-SPIO and DOX-SPIO@MSCs against MC38 cells at different DOX concentrations. ( B ) Hemolysis study of SPIO with varied concentrations, using PBS as a negative control and water as a positive control. ( C ) Uptake of NPs by leukocytes from blood of a healthy donor in vitro. ( D ) Complement C3 opsonization of NPs. ( E ) Effect of NPs on complement activation and C5a generation.

Article Snippet: Mouse monoclonal anti-human complement C3 polyclonal antibodies were purchased from Quidel (San Diego, CA, USA).

Techniques: In Vitro, Negative Control, Positive Control, Activation Assay

Journal: The Journal of Experimental Medicine

Article Title: A Novel Sialic Acid Binding Site on Factor H Mediates Serum Resistance of Sialylated Neisseria gonorrhoeae

doi:

Figure Lengend Snippet: Quantitation of C3b, iC3b, factor Bb, and total C3 binding to 24-1 and 24-1 NANA after incubation in NHS for 10 min, determined by whole cell ELISA. Each bar represents the mean ± SD of two experiments. The ratio of C3b to iC3b binding was significantly greater for 24-1 than 24-1 NANA, which bound almost no C3b. 24-1 NANA bound ∼10-fold less Bb and 4-fold less total C3 than 24-1 ( inset ).

Article Snippet: Total C3 bound to organisms was detected using polyclonal goat IgG fraction to human complement C3 (Organon Teknika-Cappel, Durham, NC; final concentration of specific antibody: 7 μg/ml) followed by anti–goat IgG alkaline phosphate conjugate ( Sigma Chemical Co. ).

Techniques: Quantitation Assay, Binding Assay, Incubation, Enzyme-linked Immunosorbent Assay