Due to Tyrosine Kinase Inhibitor Library research buy the high non-specific background of polyclonal anti-HAX1 Ab generated in mouse, immunoprecipitation of HAX1 with anti-HAX1 mAb (clone 52/HAX1, BD Biosciences, Heidelberg, Germany) was performed prior to detection.
Immunoprecipitates and cell lysates were separated by SDS-PAGE and transferred to an Immobilon™-P polyvinylidene difluoride (0.45 μm) membrane. The membrane was probed with primary (anti-HAX1 (clone E-20), anti-β-actin (clone C-4, both Santa Cruz Biotechnology, Santa Cruz, CA, USA)) and secondary Ab conjugated with HRP. The signal was detected with Pierce SuperSignal West Pico Chemiluminescent Substrate (Thermo Fisher Scientific, Rockford, IL, USA). Serial dilutions (in PBS/0.1% BSA) of mouse sera were incubated on NUNC Maxi-Sorp™ High Protein-Binding Capacity ELISA 96-well plates coated with goat anti-mouse IgM, goat anti-mouse IgG1, goat anti-mouse IgG2a or rat anti-mouse IgE (all from Smoothened Agonist solubility dmso SouthernBiotech, Birmingham, AL, USA). Plates were developed using alkaline phosphatase-conjugated goat anti-mouse IgG1, goat anti-mouse IgG2a and goat anti-mouse IgM (all from SouthernBiotech) or rat anti-mouse IgE (BD Biosciences). Signals were visualized by addition of p-nitrophenyl phosphate substrate (Sigma-Aldrich, St. Louis, MO, USA) and optical densities were measured at 405 nm (with 492 nm as the reference wavelength). Ten-week-old mice were sacrificed and resting splenic B and CD4+ T cells were isolated
by negative selection (MACS; Miltenyi Biotec, Bergisch-Gladbach, Germany). For in vitro proliferation assays, lymphocytes (5×106–1×107/mL) were incubated in the dark with 5 μM CFSE (Invitrogen, Carlsbad, CA, USA) in PBS for 10 min at RT and washed with complete RPMI 1640 medium (PAA Laboratories, Pasching, Austria). Before flow cytrometric analysis, B lymphocytes were seeded in triplicates Methane monooxygenase at a density of 105/well in 96-well
flat-bottom plates and cultured in RPMI 1640 complete medium (RPMI 1640 supplemented with 10% FBS (Gibco®, Invitrogen), 2 mM L-glutamine, 1 mM sodium pyruvate, 50 U/mL penicillin, 50 mg/mL streptomycin and 50 μM 2-ME (all PAA Laboratories) with the following additives for 3 days: LPS (10 μg/mL; Sigma-Aldrich), or anti-IgM F(ab’)2 (5 μg/mL, 61–5900; Zymed, San Francisco, CA, USA) plus anti-CD40 (5 μg/mL, 3/23; BD Biosciences), or anti-CD40 (5 μg/mL, BD Biosciences) plus IL-4 (10 ng/mL, R&D Systems, Minneapolis, MN, USA). T lymphocytes were seeded in triplicates at a density of 2–5×105/well in 96-well flat-bottom plates and cultured in MEM complete medium (αMEM supplemented with 1% mouse serum, 1× non-essential aa (Gibco®, Invitrogen), 2 mM L-glutamine, 1 mM sodium pyruvate, 20 mM HEPES, 50 U/mL penicillin, 50 mg/mL streptomycin and 50 μM 2-ME (all PAA Laboratories) with ConA (2 μg/mL; (Sigma-Aldrich) alone, or anti-CD3e (0.025–0.25 μg/well, 17A2; eBioscience, San Diego, CA, USA) plus anti-CD28 (0.3 μg/mL, 37.
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