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3 protocols using e cadherin decma 1

1

Comprehensive Histological Profiling of Tumor Metastases

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The harvested primary tumors and PBS-perfused lungs bearing metastases were fixed in 4% paraformaldehyde overnight, followed by 30% sucrose for 2 days, and then embedded in Tissue-tek O.C.T. embedding compound (Electron Microscopy Sciences). Serial sections (10µm, at least 10 sections) were prepared for histological analysis by Hematoxylin & Eosin (H&E) staining, and immunofluorescent staining following standardized protocols.
Primary antibodies used in this study include CD45 (30-F11, BioLegend), E-cadherin (DECMA-1, BioLegend), vimentin (sc-7557, Santa Cruz), PyMT (ab15085, Abcam), Neu (sc-284, Santa Cruz), Ki67 (ab15580, Abcam), and Active Caspase-3 (C92–605, BD Pharmingen). Primary antibodies were directly conjugated to Alexa Fluor 647 using an antibody labeling kit (Invitrogen) performed as per manufacturer’s instructions and purified over BioSpin P30 columns (Bio-Rad). GFP+ and RFP+ cells were detected by inherent fluorescence.
Fluorescent images were obtained using a computerized Zeiss fluorescent microscope (Axiovert 200M), fitted with an apotome and an HRM camera. Images were analyzed using Axiovision 4.6 software (Carl Zeiss Inc.).
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2

Antibody Panel for Cell Signaling Analysis

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The following antibodies were used in this study: rabbit antibodies directed against Par3 (no. 07-330; EMD Millipore), cleaved caspase3 (no. 9661; Cell Signaling Technology), phospho-Akt (Ser 473; 4060; Cell Signaling Technology), phospho-p44/42 MAPK (Erk1/2; Thr202/Tyr204; no. 4370; Cell Signaling Technology), rat anti–P-cadherin (PCD-1; no. 13-2000Z; hybridoma supernatant; Invitrogen; Nose and Takeichi, 1986 (link)), E-cadherin/DECMA-1 (no. 147302; BioLegend; Vestweber and Kemler, 1985 (link)), mouse anti–P-cadherin (no. 610228; BD), GAPDH (no. MAB374; EMD Millipore), α-tubulin (no. T-5168; clone B-5-1-2; Sigma-Aldrich), BrdU (no. MO744; Dako), E-cadherin (no. 610181; BD), β-catenin (no. 610154; BD), PCNA (no. NA03; clone PC10; EMD Millipore), and goat anti-TRP2 (no. sc-10451; Santa Cruz Biotechnology, Inc.). For secondary detection, Alexa Fluor 488 and 568 (Molecular Probes) or horse radish peroxidase (GE Healthcare) conjugates were used.
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3

Comprehensive Histological Profiling of Tumor Metastases

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The harvested primary tumors and PBS-perfused lungs bearing metastases were fixed in 4% paraformaldehyde overnight, followed by 30% sucrose for 2 days, and then embedded in Tissue-tek O.C.T. embedding compound (Electron Microscopy Sciences). Serial sections (10µm, at least 10 sections) were prepared for histological analysis by Hematoxylin & Eosin (H&E) staining, and immunofluorescent staining following standardized protocols.
Primary antibodies used in this study include CD45 (30-F11, BioLegend), E-cadherin (DECMA-1, BioLegend), vimentin (sc-7557, Santa Cruz), PyMT (ab15085, Abcam), Neu (sc-284, Santa Cruz), Ki67 (ab15580, Abcam), and Active Caspase-3 (C92–605, BD Pharmingen). Primary antibodies were directly conjugated to Alexa Fluor 647 using an antibody labeling kit (Invitrogen) performed as per manufacturer’s instructions and purified over BioSpin P30 columns (Bio-Rad). GFP+ and RFP+ cells were detected by inherent fluorescence.
Fluorescent images were obtained using a computerized Zeiss fluorescent microscope (Axiovert 200M), fitted with an apotome and an HRM camera. Images were analyzed using Axiovision 4.6 software (Carl Zeiss Inc.).
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