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5 protocols using cd3 a0452

1

Automated Multiplex IHC Analysis

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Immunohistochemistry for TUNEL and Ki-67 was performed as previously described (19 (link)). For the PROSPECT samples 4μm- thick tissue sections were stained using an automated staining system (Leica Bond Max, Leica Microsystems, Vista, CA, USA), according to standard protocols. The38 Aperio Image Analysis Toolbox (Aperio, Leica Microsystems) was used for digital analysis of images obtained from scanned slides. PDL1 clone E1L3N from Cell Signaling Technologies, CD3 A0452 from Dako and CD8 C8/144B from Thermo Scientific were used.
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Histological Analysis of Organ Samples

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Organ samples were fixed in fresh 4% paraformaldehyde at 4 °C overnight and further subjected to routine histological procedures for embedding in paraffin. 5-μm sections of the samples from at least three different animals per group were placed on microscopic slides next to one another to enable cross-comparison within a slide after H&E staining or IHC staining with the antibodies indicated. Antibodies used were GFP (D5.1) XP, PTEN (D4.3), phospho (p)-AKT (S473) (D9E), p-ribosomal protein S6 (S235/236) (D57.2.2E), Cleaved Caspase-3 (Asp175) (all: Cell Signaling Technologies, Danvers, MA), Ki67 (VP-K451, Vector Laboratories, Burlingame, CA), and CD3 (A0452) (DAKO, Glostrup, Denmark). Stained slides were scanned with a Pannoramic Scan 250 Flash or MIDI system and images acquired using Pannoramic Viewer 1.15.2 (both: 3DHistech, Budapest, Hungary). Additional images were taken on a Zeiss Axio Imager.Z2 system.
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Immunohistochemistry for Immune Biomarkers

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Immunohistochemistry for all antibodies was performed using 3 μm thick slides and standard protocols on the automated IHC staining system Discovery XT (Roche/Ventana, Tucson, Arizona, USA). The following antibodies were used: CD3 (A0452, dilution 1:500, DAKO, Glostrup, Denmark), CD8 (clone C8/144B, dilution 1:100, DAKO, Glostrup, Denmark), PD-1 (clone NAT105; dilution 1:50; Abcam, Cambridge, United Kingdom), PD-L1 (E1L3N; dilution 1:200; Cell Signaling, Boston, U.S.A.), FOXP3 (clone 236A/E7; dilution 1:100; eBioscience, San Diego, U.S.A.) Slides were counterstained with hematoxylin and mounted.
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Immunohistochemical Analysis of Lymphoid Lesions

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Two pathologists (J. Han and J. Sim) reviewed the slides of selected cases. Primary malignant lymphomas and other lymphoproliferative lesions were excluded. IHC staining with CD3 (A0452, Dako, Glostrup, Denmark), CD20 (L26, Leica, Wetzlar, Germany), and Ki-67 (MIB-1, Dako) was performed in all cases. BCL2 (124, Dako), BCL6 (LN22, Novocastra, Newcastle upon Tyne, UK), and kappa and lambda light chain (Dako) IHC staining was performed in only one patient who showed a diffuse pattern (case 6). Additionally, the IgG4:IgG ratio was assessed using IgG (Dako) and IgG4 (MRQ-44, Cell Marque, Rocklin, CA, USA) antibodies in only three cases which showed plasma cell infiltration (cases 1, 2, and 6). Special staining was performed to confirm the presence of microorganisms. Molecular tests such as IgH gene rearrangement test were not performed in any case.
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5

Histological Analysis of Organ Samples

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Organ samples were fixed in fresh 4% paraformaldehyde at 4 °C overnight and further subjected to routine histological procedures for embedding in paraffin. 5-μm sections of the samples from at least three different animals per group were placed on microscopic slides next to one another to enable cross-comparison within a slide after H&E staining or IHC staining with the antibodies indicated. Antibodies used were GFP (D5.1) XP, PTEN (D4.3), phospho (p)-AKT (S473) (D9E), p-ribosomal protein S6 (S235/236) (D57.2.2E), Cleaved Caspase-3 (Asp175) (all: Cell Signaling Technologies, Danvers, MA), Ki67 (VP-K451, Vector Laboratories, Burlingame, CA), and CD3 (A0452) (DAKO, Glostrup, Denmark). Stained slides were scanned with a Pannoramic Scan 250 Flash or MIDI system and images acquired using Pannoramic Viewer 1.15.2 (both: 3DHistech, Budapest, Hungary). Additional images were taken on a Zeiss Axio Imager.Z2 system.
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