Human/Mouse Phospho-Tie-2 (Y992) Antibody

Detection of Mouse Phospho-Tie‑2 (Y992) by Western Blot. Western blot shows lysates of NIH-3T3 mouse embryonic fibroblast cell line transfected with mouse Tie-2 and untreated (-) or treated (+) with 600 ng/mL Recombinant Human Angiopoietin-1 (Catalog # 923-AN) for 5 minutes. PVDF membrane was probed with 0.5 µg/mL of Rabbit Anti-Human/Mouse Phospho-Tie-2 (Y992) Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2720) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). A specific band was detected for Phospho-Tie-2 (Y992) at approximately 150 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Phospho-Tie-2 (Y992) in Human Kidney Tissue. Tie-2 was detected in immersion fixed paraffin-embedded sections of human kidney tissue using Rabbit Anti-Human/Mouse Phospho-Tie-2 (Y992) Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2720) at 1 µg/mL overnight at 4 °C. Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (Catalog # CTS013). Tissue was stained using the Anti-Rabbit IgG VisUCyte™ HRP Polymer Antibody (brown; Catalog # VC003) and counterstained with hematoxylin (blue). Specific staining was localized to cytoplasm in convoluted tubules. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.

Detection of Tie‑2 in HUVEC Human Cells by Flow Cytometry. HUVEC human umbilical vein endothelial cells were unstimulated (light orange filled histogram) or treated with 100 µM pervanadate for 15 minutes (dark orange filled histogram), then stained with Human/Mouse Phospho- Tie-2 (Y992) Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2720) or control antibody (Catalog # AB-105-C, open histogram), followed by Phycoerythrin-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # F0110). To facilitate intracellular staining, cells were fixed with paraformaldehyde and permeabilized with methanol.

Detection of Mouse Tie-2 by Western Blot Pericyte-derived Angpt1 controls alveologenesis. a RT-qPCR analysis of Angpt1 and Tie2/Tek expression in freshly sorted lung GFP+, CD31+ or EpCAM+ cells from P7 Pdgfrb(BAC)-CreERT2 R26-mT/mG mice. Data represents mean ± s.e.m. (n = 4 mice). b High magnification images of P10 Angpt1GFP lungs stained for GFP (green), PDGFR beta (red), and PDGFR alpha (blue). Arrows indicate GFP and PDGFR beta double positive pericytes. Scale bar, 15 µm. c RT-qPCR analysis of Angpt1 expression in freshly sorted PDGFR beta + cells from P7 Yap1,Wwtr1iPCKO and control lungs. Data represents mean ± s.e.m. (n = 4 mice, two-tailed unpaired t-test). dAngpt1 expression in cultured Verteporfin (VP)-treated (48 h) and control pericytes. Data represents mean ± s.e.m. (n = 4, Welch’s t-test). e Expression of the indicated transcripts in freshly sorted CD31+ cells from P7 Yap1,Wwtr1iPCKO and control lungs. Data represents mean ± s.e.m. (n = 4 mice, NS not significant, two-tailed unpaired t-test). f–h Western blot analysis of Angpt1 protein (f; n = 2 controls and 4 mutant mice) and of total and phospho-Tie2 (pTie2) in P12 Yap1,Wwtr1iPCKO and control total lung lysates (g, n = 3 controls and 5 mutants). Molecular weight marker (kDa) is indicated. Relative quantification of signals is shown in h. Two-tailed unpaired t-test. i Scheme showing the time points of tamoxifen administration and analysis for Angpt1iPCKO mice. j, k 3D reconstruction confocal images of P12 Angpt1iPCKO and littermate control lungs stained for AQP5 (green), PDGFR beta (red), and PECAM1 (blue). Panels in k show higher magnification of PECAM1 staining. Scale bar, 50 µm (j) and 30 µm (k). l Quantitation of airspace volume in P12 Angpt1iPCKO and littermate control lung sections with 3D reconstruction surface images. Data represents mean ± s.e.m. (n = 4 mice; p < 0.0001, two-tailed unpaired t-test). m 3D reconstruction confocal images of P12 Angpt1iPCKO and littermate control lungs stained for alpha SMA (red) and tropoelastin (blue). Scale bar, 50 µm. n Quantitation of staining intensity for alpha SMA or tropoelastin shown in m. Intensity was normalized to the size of the parenchymal region. Data represents mean ± s.e.m. (n = 4 mice; NS not significant, two-tailed unpaired t-test). o Schematic summary of findings. Pulmonary pericytes regulate ECs and alveolar epithelial cells via angiocrine factors such as angiopoietin-1 and HGF Image collected and cropped by CiteAb from the following publication (https://pubmed.ncbi.nlm.nih.gov/29934496), licensed under a CC-BY license. Not internally tested by R&D Systems.