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Vimentin clone d21h3

Manufactured by Cell Signaling Technology
Sourced in United States

Vimentin (clone D21H3) is a monoclonal antibody product developed by Cell Signaling Technology. Vimentin is a type III intermediate filament protein that is expressed in mesenchymal cells.

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6 protocols using vimentin clone d21h3

1

Immunophenotyping Synovial Tissue Sections

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Frozen synovial tissue sections were fixed in acetone and blocked with 10% goat serum (Dako), followed by incubation with the Biotin blocking system (Dako). Stainings with mAb directed against TNF (clone 52B83; Hycult Biotech), CD45 (clone HI30; BioLegend), CD55 (clone JS11; BioLegend), CD68 (clone Y1/82A; BioLegend), CD90 (clone 5E10; BioLegend), CD163 (clone GHI/61; BioLegend), and vimentin (clone D21H3; Cell Signaling Technology) were performed overnight at 4°C, followed by incubation with Alexa Fluor 488/Alexa Fluor 555–conjugated goat anti-mouse and goat anti-rabbit secondary antibodies. Slides were mounted with Vectashield containing DAPI (Vector Laboratories) and analyzed on a fluorescence imaging microscope (Leica DMRA) coupled to a charge-coupled device camera, with results analyzed using Image-Pro Plus software (Media Cybernetics, Dutch Vision Components).
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2

Western Blot Analysis of EMT Markers

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Protein was extracted from the cells using Pierce RIPA Buffer (Thermo Fisher Scientific, Rockford, IL, USA) with the cOmplete, EDTA‐free Protease Inhibitor Cocktail (Roche Diagnostics, Mannheim, Germany). A total of 20 μg whole cell extracts was loaded on mini protean TGX 4–15% gels (Bio‐Rad, Hercules, CA, USA) and transferred using the Trans‐Blot Turbo Blotting System (Bio‐Rad). The membranes were probed with the following primary antibodies: mAbs for E‐cadherin (clone 24E10; Cell Signaling Technology, Beverly, MA, USA), vimentin (clone D21H3; Cell Signaling Technology), Snail (clone C15D3; Cell Signaling Technology), SERPINI1 (clone 1D10; Sigma‐Aldrich), CHST11 (clone 1H3; Sigma‐Aldrich), or GAPDH (clone D16H11; Cell Signaling Technology) as a control at 4°C overnight. The secondary antibodies were peroxidase‐coupled goat anti‐rabbit or anti‐mouse antibodies and detected with Clarity Western ECL Substrate (Bio‐Rad), and the protein bands were visualized using the ImageQuant LAS 4000 mini system (GE Healthcare Life Sciences).
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3

Multiparametric Characterization of Cellular Phenotypes

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Antibodies used for staining included: anti-pan-cytokeratin (clone C11, 1:500) and vimentin (clone D21H3, 1:200) (Cell Signaling), anti- α-smooth muscle actin (α-SMA) (clone 1A4, 1:200) (Dako), anti-Ki-67 (rabbit polyclonal, ab15580, 1:300) (Abcam), anti-CD105-PE (clone SN6, 1:100) (eBioscience), anti-mitochondria (clone 113-1, 1:100) and anti-fibroblast specific protein-1 (FSP-1; rabbit polyclonal, 07-2274, 1:200) (Millipore). IL-6 ELISA kit was purchased from BD Biosciences. CCL5 DuoSet ELISA kit and mouse CXCL12/SDF-1 alpha Quantikine ELISA Kit were from R&D Systems. Alexa Fluor® fluorescent dye-conjugated secondary antibodies were from Life Technologies for immunofluorescent staining.
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4

Immunohistochemical Profiling of SCLC Subtypes

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TMAs and slides were stained for subtype‐defined markers of SCLC including ASCL1 (clone 24B72D11.1, dilution 1:100; BD Biosciences), NEUROD1 (clone EPR17084, dilution 1:50; Abcam), POU2F3 (clone 6D1, dilution 1:100; Santa Cruz), YAP1 (clone 63.7, dilution 1:2000; Santa Cruz) and Vimentin (clone D21H3, dilution 1:100; Cell Signaling Technologies) using Anti‐mouse/rabbit IHC Detection Kit (PK10006; Proteintech) according the manufacturer's protocol. Two independent pathologists reviewed the stained slides in a blinded fashion. The expression of each marker from tumor cells was assessed by histoscore (H‐score, range 0–300), which was calculated by multiplying the proportion of positive tumor cells (0%–100%) by the intensity of positive staining (no staining = 0, weak staining = 1, moderate staining = 2, and strong staining = 3).37, 38 A dominant marker is defined as the marker with the highest H‐score. In SCLC with combined SCLC and NSCLC components, IHC scores reflect expression exclusively in the SCLC component.
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5

Multiparametric Characterization of Cellular Phenotypes

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Antibodies used for staining included: anti-pan-cytokeratin (clone C11, 1:500) and vimentin (clone D21H3, 1:200) (Cell Signaling), anti- α-smooth muscle actin (α-SMA) (clone 1A4, 1:200) (Dako), anti-Ki-67 (rabbit polyclonal, ab15580, 1:300) (Abcam), anti-CD105-PE (clone SN6, 1:100) (eBioscience), anti-mitochondria (clone 113-1, 1:100) and anti-fibroblast specific protein-1 (FSP-1; rabbit polyclonal, 07-2274, 1:200) (Millipore). IL-6 ELISA kit was purchased from BD Biosciences. CCL5 DuoSet ELISA kit and mouse CXCL12/SDF-1 alpha Quantikine ELISA Kit were from R&D Systems. Alexa Fluor® fluorescent dye-conjugated secondary antibodies were from Life Technologies for immunofluorescent staining.
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6

Evaluating EMT-related Protein Expression

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Cells were lysed with the RIPA buffer containing 25 mM Tris-HCL, pH 7.5, 150 mM NaCl, 1% sodium deoxycholate, 0.1% SDS, 1 mM EDTA and 1.0% NP-40 on ice. Samples were resolved by SDS-PAGE and transferred to PVDF membranes. The western blots were performed with antibodies against MLL3 (Polyclonal, Millipore Sigma, ABE1851, 1:1000), E-cadherin (clone 36, BD Biosciences, cat# 610182, 1:1000), Vimentin (clone D21H3, Cell Signaling Technology, cat# 5741S, 1:1000), Slug (clone C19G7, Cell Signaling Technology, cat#9585S, 1:1000), Snail (clone C15d3, Cell Signaling Technology, cat#3879S, 1:1000), Zeb1 (clone D80D3, Cell Signaling Technology, cat#3396S, 1:1000), Stat1 (clone D1K9Y, Cell Signaling Technology, cat#14994S, 1:1000), phosphor-Stat1(Tyr701) (clone 58D6, Cell Signaling Technology, cat#9167S,1:1000), β-actin (clone C4/actin, BD Biosciences, cat#612656, 1:10,000), H3K27ac (clone D5E4, Cell Signaling Technology, cat#8173S, 1:1000), H3K4me1 (clone D1A9, Cell Signaling Technology, cat#5326S, 1:1000), H3K4me3 (clone C42D8, Cell Signaling Technology, cat#9751S, 1:1000), or Histone H3 (clone 1B1B2, Cell Signaling Technology, cat#14269S, 1:10,000). Original scans of the western blot results are provided in the Source Data for individual figures.
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