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4 protocols using h 210

1

Immunohistochemical Analysis of APM Components

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For staining the following antibodies and dilutions were used: for TAP1, rabbit polyclonal H-300 (1:100); for TAP2, rabbit polyclonal H210 (1:100), both from Santa Cruz Biotechnology, Inc (Dallas, TX, USA); for LMP2, rabbit polyclonal antibody ab3328 (1:1000); for LMP7, ab3329 (1:500), both from Abcam (Cambridge, United Kingdom). As secondary antibodies, BA-1000 anti-rabbit (1:200) and BA-2000 anti-mouse (1:200) both from Vector Laboratories (Burlingame, CA, USA) were used. The tumors included in the present study were formerly evaluated for LMP10 with ab C-2 (Santa Cruz Biotechnology, Inc) [27] (link), and for HLA class I with mouse monoclonal antibodies HCA-2 and HC-10 [15] (link), [16] (link). Data from these studies have been included in the present study for comparison to other APM components.
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2

Western Blot Analysis of Brachyury

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Protein lysates from H460, PANC-1 and chordoma cells were prepared with RIPA buffer (Cell Signaling Technology) supplemented with 1 mM Phenylmethanesulfonyl fluoride (Sigma-Aldrich); five to 10 μg of protein was run in each lane. The following primary antibodies against brachyury were used: monoclonal rabbit (MAb 54-1, 1 μg/ml), monoclonal murine ab57480 (purchased from Abcam, 1 μg/ml), and polyclonal rabbit H-210 (purchased from Santa Cruz Biotechnology, Inc; 1/200 dilution). IRDye-800CW conjugated goat anti-mouse or anti-rabbit secondary antibodies (LI-COR Biosciences) were utilized at a 1:5000 dilution. Hybridoma supernatants were screened at a 1:500 dilution. All western blots were imaged and quantified using the Odyssey Infrared imaging system (LI-COR Biosciences).
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3

Analyzing Cohesin Complex Protein Levels

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Protein was extracted from equal cell numbers in a high urea buffer (48% urea, 15 mM Tris-HCl, pH 7.5, 8.7% glycerin, 1% SDS, 0.004% bromophenol blue, and 143 mM β-mercaptoethanol). Protein levels were measured using the Bradford assay. Equal amounts of protein were loaded on NuPAGE Novex 4–12% Bis-Tris protein gel (NP0321; Life Technologies) and run with NuPAGE MOPS buffer (NP0001; Life Technologies). Proteins were transferred to Immobilon P (IPVH00010; EMD Millipore). Membrane was blocked in 5% nonfat milk in TBST and incubated with antibodies for Rad21 (H-210; Santa Cruz Biotechnology, Inc.), Smc1a (A300-055A; Bethyl Laboratories, Inc.), Smc3 (ab9263; Abcam), Stag2 (J-12; Santa Cruz Biotechnology, Inc.) and Actin B (C4; EMD Millipore). Secondary antibodies used were HRP conjugated (NA9340 and NA931; GE Healthcare). Blot was visualized using ECL (PI34077 and PI34095; Thermo Fisher Scientific).
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4

Immunohistochemistry of Chordoma Cells

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Immunohistochemistry was performed on formalin-fixed and paraffin-embedded tissue via the avidin-biotin-complex-method using the K005 AP/RED Detection System (Dako, Glostrup, Denmark). The following antibodies were used: monoclonal antibodies against brachyury (H-210, Santa Cruz, Dallas, USA, 1:100), epithelial membrane antigen (EMA; E29, Dako, 1:500), vimentin (VIM3B4, Dako, 1:300), cytokeratin (AE1 + AE3, Dako, 1:100), Ki-67 (MIB-1, Dako, 1:200), p53 (DO-7, Dako, 1:500) and the polyclonal antibodies against S100-protein (Dako, 1:1000) and HOXA10 (OriGene Technologies, Rockville, USA, 1:100). Appropriate positive and negative controls were included.
The ratio of positive chordoma cells was characterized as follows: “no immunoreactivity detected” (−), “immunoreactivity in up to 30% (+), “immunoreactivity in more than 30% and up to 70%” (++) and “immunoreactivity in more than 70%” (+++) of the total number of chordoma cells in the section53 (link).
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