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3 protocols using tlr4 pe

1

Evaluating Surface Marker Expression in MSC Variants

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The expression of surface markers on MSC, nvMSC-HLA-G1, and vMSC-HLA-G1 was evaluated by flow cytometry using the following monoclonal anti-human antibodies: HLA-G FITC (ABD Serotec, Oxford, UK), HLA DR, DP, DQ FITC (BD Bioscience, San Jose, CA), HLA-ABC PE (BD Pharmingen, San Jose, CA), MICA/MICB FITC, CD155 FITC (both from ABD Serotec), ULBP-1 PE, ULBP-2 PE (both from R&D Systems), CD58 PE (BD Biosciences), TLR9 FITC, TLR4 PE (both from Abcam, Cambridge, UK) and TLR3 Alexa 647 (Imagenex, Port Coquitlam, BC, Canada). Cells were also stained for HLA E (Abcam), ULBP-3 (R&D Systems), and CD112 (ABD Serotec) using Alexa Fluor 488 Goat Anti-Mouse IgG (Molecular Probes-Life Technologies) as secondary antibody. Briefly, cells were incubated for 15 minutes in the dark with saturating concentrations of each antibody. Stained cells were then washed with phosphate-buffered saline 0.1% azide, fixed with 1% formaldehyde, and analyzed by flow cytometry using the CellQuest software (Becton Dickinson Biosciences, San Jose, CA). A total of 10,000 events was acquired for each sample. Appropriate isotype (negative) controls were performed for each antibody.
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2

Characterizing Apoptosis and Inflammation in Lung Cells

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For apoptosis analysis, lung macrophages were stained with annexin V-FITC (fluorescein isothiocyanate) and propidium iodide (PI) (Imgenex Corporation) together with Vim-PE (phycoerythrin) (BD). ROS production was evaluated by staining cells with 2′,7′-dichlorodihydrofluorescein diacetate (DCFDA; Abcam) for 30 min and then cultured for additional 2 hours with CdCl2 and/or CB in the presence or absence of Mito-TEMPO (Sigma-Aldrich) before analysis by flow cytometry. Human fibroblasts were stained with CD26-PE (BioLegend), TLR1-FITC (Abcam), TLR2-FITC (Abcam), or TLR4-PE (Abcam) for measuring their surface expression in response to Vim or Cit-Vim (2 μg/ml) stimulation. Intracellular expression of α-SMA was detected by staining cells with α-SMA–APC (allophycocyanin) (R&D Systems), and TLR9 was characterized by staining unlabeled anti-TLR9 (Novus) followed by counterstaining with APC-conjugated anti-mouse immunoglobulin G (IgG). Data were acquired with LSR II (BD Biosciences) and analyzed using FlowJo software (version 10.6.1).
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3

Evaluating Surface Marker Expression in MSC Variants

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The expression of surface markers on MSC, nvMSC-HLA-G1, and vMSC-HLA-G1 was evaluated by flow cytometry using the following monoclonal anti-human antibodies: HLA-G FITC (ABD Serotec, Oxford, UK), HLA DR, DP, DQ FITC (BD Bioscience, San Jose, CA), HLA-ABC PE (BD Pharmingen, San Jose, CA), MICA/MICB FITC, CD155 FITC (both from ABD Serotec), ULBP-1 PE, ULBP-2 PE (both from R&D Systems), CD58 PE (BD Biosciences), TLR9 FITC, TLR4 PE (both from Abcam, Cambridge, UK) and TLR3 Alexa 647 (Imagenex, Port Coquitlam, BC, Canada). Cells were also stained for HLA E (Abcam), ULBP-3 (R&D Systems), and CD112 (ABD Serotec) using Alexa Fluor 488 Goat Anti-Mouse IgG (Molecular Probes-Life Technologies) as secondary antibody. Briefly, cells were incubated for 15 minutes in the dark with saturating concentrations of each antibody. Stained cells were then washed with phosphate-buffered saline 0.1% azide, fixed with 1% formaldehyde, and analyzed by flow cytometry using the CellQuest software (Becton Dickinson Biosciences, San Jose, CA). A total of 10,000 events was acquired for each sample. Appropriate isotype (negative) controls were performed for each antibody.
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