Journal: bioRxiv

Article Title: Inexpensive High-Throughput Multiplexed Cytokine Detection for Tuberculosis Diagnostics Using Amplified Enzymatic Metallization

doi: 10.64898/2026.01.27.700981

Figure Lengend Snippet: (a) Schematic of laser-cut PDMS microwell array reversibly assembled on a polystyrene petri dish and workflow of enzymatically amplified silver metallization using Biotin-BSA and poly-HRP-SA. (b) Cell-phone image of silver metallized wells after assay. (c) Biotin-BSA dilution curve obtained from cell-phone image silver darkness quantification in ImageJ. (d) Assay stack for initial biotinyl tyramide signal amplification testing using biotinylated anti-IFN-γ as capture. (e) Dilution curve of silver darkness of increasing biotinylated anti-IFN-γ as target and 10 µg/mL, 1 µg/mL, and 0 µg/mL biotinyl tyramide. All assays were repeated three (n=3) times and fit lines are four-parameter logistic sigmoidal curves.

Article Snippet: Recombinant human IFN-γ protein (11725-HNAS), biotinylated anti-human IFN-γ antibody (11725-R209-B), anti-human IFN-γ antibody (11725-R238), HRP-conjugated anti-human IFN-γ antibody (11725-R209-H), recombinant human TNF-α protein (10602-HNAE), biotinylated anti-human TNF-α antibody (10602-MM08-B), and anti-human TNF-α antibody (10602-MM01) were obtained from SinoBiological.

Techniques: Amplification

Journal: bioRxiv

Article Title: Inexpensive High-Throughput Multiplexed Cytokine Detection for Tuberculosis Diagnostics Using Amplified Enzymatic Metallization

doi: 10.64898/2026.01.27.700981

Figure Lengend Snippet: (a) Schematic of immunoassay for cytokine detection. (b) Initial LOD optimization for the IFN-γ assay. (c-e) IFN-γ (n=2), IL-2 (n=5), TNF-α (n=2) dilution curves using recombinant cytokines (f-h) Correlation plots of ELISA absorbance values at 450 nm versus silver darkness values for IFN-γ (f), TNF-α (g), and IL-2 (h). All fit lines are four-parameter logistic sigmoidal curves.

Article Snippet: Recombinant human IFN-γ protein (11725-HNAS), biotinylated anti-human IFN-γ antibody (11725-R209-B), anti-human IFN-γ antibody (11725-R238), HRP-conjugated anti-human IFN-γ antibody (11725-R209-H), recombinant human TNF-α protein (10602-HNAE), biotinylated anti-human TNF-α antibody (10602-MM08-B), and anti-human TNF-α antibody (10602-MM01) were obtained from SinoBiological.

Techniques: Recombinant, Enzyme-linked Immunosorbent Assay

Journal: bioRxiv

Article Title: Inexpensive High-Throughput Multiplexed Cytokine Detection for Tuberculosis Diagnostics Using Amplified Enzymatic Metallization

doi: 10.64898/2026.01.27.700981

Figure Lengend Snippet: (a) Schematic demonstrating the stimulation groups and controls. Dilution curves for IFN-γ (b-c), IL-2 (d-e), and TNF-α (f-g) in pooled LTB+ and LTB-clinical supernatant samples. Clinical samples consisted of NIL (negative control), Ag1, Ag2, and Mitogen (positive control) groups (n=2).

Article Snippet: Recombinant human IFN-γ protein (11725-HNAS), biotinylated anti-human IFN-γ antibody (11725-R209-B), anti-human IFN-γ antibody (11725-R238), HRP-conjugated anti-human IFN-γ antibody (11725-R209-H), recombinant human TNF-α protein (10602-HNAE), biotinylated anti-human TNF-α antibody (10602-MM08-B), and anti-human TNF-α antibody (10602-MM01) were obtained from SinoBiological.

Techniques: Negative Control, Positive Control

Journal: bioRxiv

Article Title: Inexpensive High-Throughput Multiplexed Cytokine Detection for Tuberculosis Diagnostics Using Amplified Enzymatic Metallization

doi: 10.64898/2026.01.27.700981

Figure Lengend Snippet: Individual participant silver darkness values for IFN-γ (a), IL-2 (b), and TNF-α (c) detection from NIL, Ag1, Ag2, and Mitogen samples of IGRA+ and IGRA-patients using a sample dilution of 1:10. Average of n=2 repeats was plotted for each sample.

Article Snippet: Recombinant human IFN-γ protein (11725-HNAS), biotinylated anti-human IFN-γ antibody (11725-R209-B), anti-human IFN-γ antibody (11725-R238), HRP-conjugated anti-human IFN-γ antibody (11725-R209-H), recombinant human TNF-α protein (10602-HNAE), biotinylated anti-human TNF-α antibody (10602-MM08-B), and anti-human TNF-α antibody (10602-MM01) were obtained from SinoBiological.

Techniques:

Journal: bioRxiv

Article Title: NewroBus for the brain: humanized TfR1-targeting nanobodies with high BBB permeability and cargo transport capacity

doi: 10.1101/2025.04.20.649139

Figure Lengend Snippet:

Article Snippet: The same procedure was used with the following modifications: plates were coated with 0.2 µg/mL biotinylated human TNFα (Acro Biosystems, TNA-H82E3-25ug) instead of TfR1.

Techniques: Activity Assay, Expressing, Enzyme-linked Immunosorbent Assay

Journal: bioRxiv

Article Title: NewroBus for the brain: humanized TfR1-targeting nanobodies with high BBB permeability and cargo transport capacity

doi: 10.1101/2025.04.20.649139

Figure Lengend Snippet: A ) Schematic representation of the 16 humanized and optimized TNFI–TfR1b heterodimers. B ) Flow cytometry analysis in HEK293 cells stably expressing human TfR1, comparing the binding of heterodimers to that of their parental humanized TfR1b-Nbs. C ) Dose-response apoptosis inhibition curves in WEHI-13VAR cells treated with human TNFα and 2-fold serial dilutions of TNFI–TfR1b heterodimers (100,000 to 12.21 pM). Apoptosis was measured using a fluorogenic caspase-3/7 activation assay. The IC₅₀ values of the heterodimers were comparable to those of the parental humanized nanobodies TNFI-α (IC₅₀ = 48.84 pM, range: 42.11–56.56) and TNFI-β (IC₅₀ = 64.31 pM, range: 57.17–72.31).

Article Snippet: The same procedure was used with the following modifications: plates were coated with 0.2 µg/mL biotinylated human TNFα (Acro Biosystems, TNA-H82E3-25ug) instead of TfR1.

Techniques: Flow Cytometry, Stable Transfection, Expressing, Binding Assay, Inhibition, Activation Assay