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Anti cd20 antibody

Manufactured by BioLegend
Sourced in United States

The Anti-CD20 antibody is a laboratory reagent used in research applications. It is a monoclonal antibody that specifically binds to the CD20 cell surface antigen, which is expressed on B cells. The antibody can be used for the identification and isolation of CD20-positive cells in various experimental settings.

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3 protocols using anti cd20 antibody

1

Pharmacological Interventions for EAU

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The mice were intravenously injected twice weekly with BZ (n = 6; 0.75 mg/kg; Selleck Chemicals, Houston, TX, USA) or an equivalent volume of vehicle control (n = 6; PBS) for 2 weeks55 (link).
Mice were orally treated with SMI‐4a (n = 6; 60 mg/kg; Selleck Chemicals) or vehicle control (n = 6; 0.1% DMSO/30% PEG-400/0.5% Tween80) once daily for 14 consecutive days after immunization65 (link). For the in vitro experiments, 20 μM SMI-4a was used.
The mice were intravenously injected with anti-CD20 antibody (n = 6; 250 μg/mouse; Biolegend, San Diego, CA, USA) or an equivalent volume of vehicle control (n = 6; PBS) before (7 days before immunization, day −7) and after EAU development (7 days after immunization, day +7)35 (link).
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2

Anti-CD20 Antibody Mediated B Cell Depletion

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Wild-type (WT) mice were injected once intraperitoneally with anti-CD20 antibody (BioLegend; Clone: SA271G2; Cat.#152104; 1 mg/mL). Mice were injected between 21 and 28 days of age (100 μL/mouse). Littermate control mice were injected with isotype control antibody (BioLegend; Clone: RTK4530; Cat# 400644). All mice were analyzed 7 days post-injection. B cell depletion was assessed by flow cytometry (Sup. Figure 1).
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3

Depleting B and T Cells in SARS-CoV-2 Challenge

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All CD20+ B and CD8+ T cell depletion studies followed by wild-type SARS-CoV-2 challenge were carried out by adapting a previously published approach. B cells were depleted from hACE2 transgenic mice through the intraperitoneal (i.p.) administration of 50 μg of anti-CD20 antibody (BioLegend SA271G2) at 72 h (−3 days) and 24 h (−1 day) before vaccination with LUNAR-COV19. For CD8+ T cell depletion, 5 μg of anti-CD8+ antibody (Bio X Cell, Cat#BE0061) was injected i.p. at −3 days and −1 day before challenge with SARS-CoV-2. For control mice, isotype IgG2b mouse control antibody (Bio X Cell, Cat#BE0090) was similarly injected. Successful depletions of CD20+ B and/or CD8+ T cells were confirmed via flow cytometry. Briefly, 24 h after the second injection of anti-CD20+ and/or anti-CD8+ antibodies, sub-mandibular blood was stained with AF488-conjugated anti-mouse CD45R (BD, Cat#557669), APC-conjugated anti-mouse CD3 (BD, Cat#565643), and BUV395-conjugated anti-mouse CD8b antibodies (BD, Cat#74027).
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