47-0319-42

PECAM1 antibody from Invitrogen Antibodies

CD31

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Other assay: Supportive data in Antibodypedia

Provider product page for 47-0319-42

Antibody data

Antibody Data
References [29]
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Validations
Flow cytometry [2]
Other assay [31]

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Product number: 47-0319-42
Provider: Invitrogen Antibodies
Product name: CD31 (PECAM-1) Monoclonal Antibody (WM-59 (WM59)), APC-eFluor™ 780, eBioscience™
Provider product page: Invitrogen Antibodies - 47-0319-42
Antibody type: Monoclonal
Antigen: Other
Reactivity: Human
Host: Mouse
Isotype: IgG
Antibody clone number: WM-59 (WM59)
Vial size: 100 Tests
Concentration: 5 µL/Test
Storage: 4° C, store in dark, DO NOT FREEZE!

Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Experimental details: Figure 2 De Novo Synthesis of PGE 2 Is Required for BMP4-Induced Mesoderm Specification of hESCs (A) Schematic of different induction methods. Indo, indomethacin. (B) qPCR analysis of mesodermal marker gene expression levels in hESCs with BMP4 induction plus DMSO (-Indo) or indomethacin (+Indo) for 48 hr. ** p < 0.01 compared with -Indo group. n >= 3 independent experiments. (C and D) Immunostaining (C) and western blotting (D) analysis for BRA in hESCs with BMP4 induction plus DMSO (-Indo) or indomethacin (+Indo) for 48 hr. Scale bars represent 50 mum. (E) hemato-vascular precursors (HV) marker gene expression levels in hESCs with BMP4 induction plus DMSO (-Indo) or indomethacin (+Indo) for 48 hr and hemato-vascular precursors induction (SFDM + 50 ng/mL VEGF + 50 ng/mL bFGF) for 4 days. * p < 0.05, ** p < 0.01 compared with -Indo group. n = 3 independent experiments. (F and G) Flow cytometry analysis of the percentage of KDR + CD31 + cells after hemato-vascular induction. * p < 0.05 compared with -Indo group. n = 3 independent experiments. (H) Neuroectoderm (NE) marker gene expression levels in hESCs with BMP4 induction plus DMSO (-Indo) or indomethacin (+Indo) for 48 hr. * p < 0.05 compared with -Indo group. n = 3 independent experiments. (I) qPCR analysis of tissue-specific gene expression levels in different engrafts. * p < 0.05, ** p < 0.01 compared with -Indo group. n = 3 independent experiments. Error bars indicate SD. See also Figure S2 .

Supportive validation

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Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Experimental details: Figure 2--figure supplement 3. mRNA expression analysis of HDR genes in CD44-/CD24+ and CD44+/CD24- cells FACS sorted from cells lines and patient tumors. ( A ) Comparative expression of the indicated HDR genes in FACS-sorted CD44+/ CD24- cells relative to CD44-/ CD24+ cells from H1650, A549 and MCF7. mRNA expression was quantified by RT-qPCR. Each bar is the mean +- SD of three replicates from two different experiments and represents mRNA expression of the indicated gene. p-value *

Supportive validation

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Experimental details: Fig. 3 ATR2 siRNA transfection and immunophenotyping for EC markers. I Concentration selection for siRNA transfection. Three different concentrations (10, 35, and 50 nM) of ATR2 siRNA were used according to the manufacturer's protocol. Western blot analysis showed inhibition of ATR2 by 10, 35, and 50 nM of ATR2 siRNA. However, 50 nM of ATR2 siRNA showed the highest inhibition among all three different concentrations ( A ). ATR2 silencing by siRNA transfection with EGM compared with AMSCs with EGM and EGM + scrambled siRNA (negative control) ( B ). GAPDH was used as a housekeeping gene. II Flow cytometric analysis of PECAM1 (CD31) in four different groups; control group with EGM ( A ), AMSCs with EGM and MMP-2 siRNA ( B ), AMSCs with EGM and MMP-14 siRNA ( C ), and HUVECs as the positive control ( D ). Cell transfection with 5 muM of ATR2 siRNA for EGM ( E ), AMSCs with EGM and MMP-2 siRNA ( F ), and AMSCs with EGM and MMP-14 siRNA ( G ). Flow cytometry data were analyzed to show the significant differences between the groups ( H ). III Flow cytometric analysis of VE-cadherin (CD144) in four different groups: control group AMSCs with EGM ( A ), AMSCs with EGM and MMP-2 siRNA ( B ), AMSCs with EGM and MMP-14 siRNA ( C ), and HUVECs as the positive control ( D ). Cell transfection with 5 muM of ATR2 siRNA for EGM ( E ), AMSCs with EGM and MMP-2 siRNA ( F ), and AMSCs with EGM and MMP-14 siRNA ( G ). Flow cytometry data were analyzed to show the significant differences betwe

Supportive validation

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Experimental details: Fig. 5 Inhibition of ERK phosphorylation and immunophenotyping for EC markers. I Concentration -dependent effect of ERK inhibitor (U0126). Three different concentrations (0.5, 1.0, and 5.0 muM) of U0126 were used. Western blot analysis showed significant inhibition of p-ERK by 1.0 and 5.0 muM of U0126. However, 5.0 muM of U0126 showed the highest inhibition among all three different concentrations. Phospho-ERK was normalized to its total protein expression. II Flow cytometric analysis of PECAM1 (CD31) with ERK inhibitor (U0126). Three different groups treated with 5.0 muM of U0126: AMSCs with EGM ( A ), AMSCs with EGM and MMP-2 siRNA ( B ), and AMSCs with EGM and MMP-14 siRNA ( C ). Flow cytometry data were analyzed to show the significant differences between the groups ( D ). III Flow cytometric analysis of VE-cadherin (CD144) with ERK inhibitor (U0126). Three different groups were treated with 5.0 muM of U0126: AMSCs with EGM ( A ), AMSCs with EGM and MMP-2 siRNA ( B ), and AMSCs with EGM and MMP-14 siRNA ( C ). Flow cytometry data were analyzed to show the significant differences with or without U0126 ( D ). * p < 0.05, ** p < 0.01, *** p < 0.001. EBM endothelial cell basal medium, EGM endothelial cell growth medium, MMP matrix metalloproteinase, ERK extracellular signal-regulated kinase, HUVEC human umbilical vein endothelial cell

Supportive validation

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Experimental details: Fig. 1 WJMSCs isolation and characterization. a Primary cell isolation procedure from Wharton''s jelly tissue. The migrated cells exhibited typical fibroblast-like morphology. Scale bar, 500 mum. b Flow cytometry analysis of P4 cells using mesenchymal stem cell markers (CD90, CD105, CD73), endothelial cell marker (CD31), and MHC class II protein HLA-DR. Isotypic antibodies (IgG1-PE and IgG1-FITC) were used as negative controls. c Representative stained images show that the fourth passage WJMSCs could differentiate into osteocytes (Alizarin Red S), adipocytes (Oil Red O), and chondrocytes (Alcian blue). Scale bar, 100 mum

Supportive validation

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Experimental details: FIGURE 1 Characterization of young and aged MSCs and exosomes. (A) Surface marker profiling of young-MSCs and aged-MSCs. (B) SA-beta-Gal staining showed that senescence increased significantly in aged MSCs. (C) Representative immunoblot images and quantitative analysis of p21, p53, and p16 protein level in young and aged-MSCs. ( n = 3). (D) Quantitation of cell cycle phases by propidium iodide staining. ( n = 3). (E) The CCK-8 assay showed that aged MSCs grew more slowly than young MSCs. ( n = 6). (F) Young and aged exosomes were observed using TEM. (G) The exosome surface markers were analyzed by Western blot. (H) Nanoparticle tracking analysis was used to analyze the particle size and concentration of Young-Exo and Aged-Exo. * p < 0.05; ** p < 0.01; *** p < 0.001; **** p < 0.0001; NS, not significant.

Supportive validation

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Experimental details: Figure 1 Primary human adipose-derived cells cultured in hypoxia (hAMSCs-H) and normoxia (hAMSCs-N) are both MSCs but normoxia-cultured cells show increased signs of senescence, such as increased area and elongated morphology, compared with hypoxia-cultured cells. ( a ) hAMSCs were isolated from human fat tissue and cultured in hypoxic (1.5% oxygen) or normoxic (21% oxygen) conditions in vitro . The viability, mobility, tumor tropism, safety, and tumorigenic potential were subsequently compared in vitro and in vivo . ( b ) Differentiation assay. hAMSCs were cultured in control media and differentiation media for 3 weeks, 10 days after the second passage. Three different stains were performed to assess differentiation capabilities (scale bar, 100 mu m). ( c ) Flow cytometric analysis was performed to confirm the absence of CD31-, CD34-, and CD45-positive cells in both cell cultures. In addition, primary hAMSC cultures expressed high levels of CD73, CD90, and CD105, both in hypoxic and normoxic culture conditions at day 10 after passage 2. ( d ) Representative images of cell morphologies of hAMSCs on 2D surface (scale bar, 200 mu m). ( e ) Schematic of 3D-nanopatterned surface used to assess morphology and motility. ( f ) Images of cell morphologies of hAMSCs on 3D-nanopatterned surface (scale bar, 200 mu m). ( g - j ) The length, width, area, and length-to-width ratio were measured and compared after cell aligned on the nanopattern surface. Error bars represent S.E.M. * P

Supportive validation

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Experimental details: Figure 3 Hypoxia-cultured primary human adipose-derived mesenchymal stem cells (hAMSCs-H) retain a greater proliferation capacity compared with normoxia-cultured primary hAMSCs (hAMSCs-N) when exposed to GBM media. hAMSCs-H maintain stem cell characteristics when exposed to GBM media. ( a ) Representative MRI of GBM from a patient. ( b ) Schema showing the collection of GBM CM and culture of hAMSCs in filtered GBM CM for proliferation and migration assays. ( c ) MTT assay was used to determine the effects of hypoxic conditions on the proliferative capacity of primary hAMSCs in GBM CM. In GBM CM, hAMSCs-H showed greater proliferation at day 10 and 15 compared with hAMSCs-N. ( d ) Ki-67 immunostaining was performed to quantify the number of proliferating cells in GBM CM. Proliferative capacities of hAMSCs-H and hAMSCs-N are shown in GBM CM (normalized to hAMSC-N proliferative capacity in control media). In GBM CM, hAMSCs-H had a greater proportion of proliferating cells than hAMSCs-N. ( e) Differentiation assay. hAMSCs were cultured in control media, differentiation media, and GBM CM for 3 weeks, 10 days after the second passage. Three stainings were performed to assess the differentiation capabilities (scale bar, 100 mu m). Both hAMSCs-N and hAMSCs-H maintained tri-lineage differentiation capability in GBM CM. ( f ) Flow cytometric analysis for CD31, CD34, CD45, CD73, CD90, and CD105 in hAMSC-N and hAMSC-H cultures after exposure to GBM CM for 20 days. hAMSCs-H maintained MSC

Supportive validation

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Experimental details: Figure 1. HCMV positivity in GBM determined comparatively by serology, qPCR and IHC. GBM patients were investigated for presence of HCMV pp65 and IE-1 expression by (A) qPCR, IHC and serology (dark gray bars = positive samples and light gray bar = negative samples) and (B) IE-1 expression on macrophage/myeloid derived cells (left panel) and on tumor cells (right panel). Magnification 400X, Scale bar 100 mum. (C) Venn diagram showing comparative HCMV serology (IgG), qPCR (pp65), qPCR (IE-1) and IHC (IE-1) detection in GBM tissue and blood. (D) Venn diagram showing comparative HCMV pp65 and IE-1 qPCR in GBM patients' blood and tumor. (E) Representative dotplots showing (left to right) macrophages (CD45 bright CD11b bright ) and microglia (CD45 dim CD11b bright ) within tumor biopsies cells; pp65 vs. CD45 within macrophages of tumor biopsies; pp65 vs . CD31 within CD45 - tumor biopsy cells; and pp65 vs . CD45 within CD45 - tumor biopsy cells. (F) % mean +- SEM of pp65 + cells within CD45 bright CD11b bright macrophages, CD45 dim CD11b bright microglia, CD45-CD31+ endothelial cells and CD45- tumor cells. (2-way ANOVA, Bonferroni's multiple comparison, **** P < 0.0001). IHC = immunonohistochemistry; IE-1 = immediate early -1.

Supportive validation

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Experimental details: Figure 3 HEB -/- hESCs Display Defects in Mesoendodermal Induction and Early Hematopoietic Differentiation (A) Experimental overview of embryoid body (EB) formation and differentiation. BMP4, bone morphogenetic protein 4; bFGF, basic fibroblast growth factor; VEGF, vascular endothelial growth factor; IL, interleukin; EPO, erythropoietin; SCF, stem cell factor; IGF1, insulin-like growth factor 1; FLT3L, FMS-like tyrosine kinase 3 ligand; TPO, thrombopoietin. (B) Reverse-transcriptase PCR analysis of HEB transcript (HEBCan, canonical; HEBAlt, alternative) expression at various stages of EB differentiation, and in sorted day-8 (d8) CD34 + cells (last column). GAPDH was measured as a loading control. (C) qRT-PCR analysis for the expression of pluripotency and differentiation markers in undifferentiated hESCs (day 0 [d0]) versus d4 EB-derived cells. (D) Flow-cytometric analysis of CD34 and KDR, CD144, and CD31 expression on d8 EB-derived cells. (E and F) Percentages (E) and numbers (F) of CD34 + cells in d8 EBs. (G) qRT-PCR analysis of the expression of mesodermal and hematopoietic genes in CD34 + cells. For qRT-PCR graphs, mRNA levels are shown relative to GAPDH. Error bars represent mean +- SD (n = 3 independent experiments). ** p < 0.01; *** p < 0.005 by Student's t test. Images in (B) and plots in (D) are representative of three independent experiments. See also Figure S4 .

Supportive validation

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Experimental details: Figure 6 Ectopic Expression of HEBCan in HEB -/- hESCs Restores Lineage-Specific Gene Expression and Hematopoietic Specification (A) Western blot analysis for HEB expression in WT, KO (HEB -/- ), KO + GFP (HEB -/- hESCs transduced with GFP control vector) and KO + HEBCan (HEB -/- hESCs transduced with HEBCan-encoding vector) hESCs. (B) Bright-field (top) and fluorescent (bottom) images of day-8 (d8) EBs derived from HEB -/- hESCs transduced with control or HEBCan-expressing lentiviral particles. Scale bar, 100 mum. (C and D) qRT-PCR analysis for the expression of pluripotency-associated genes (C) and mesoendodermal genes (D) in WT, KO + GFP, and KO + HEBCan hESC-derived cells at d0 and d4 of EB culture. mRNA levels are shown relative to GAPDH. (E) Flow-cytometric analysis of CD34 and KDR, CD144, and CD31 on WT, KO + GFP, and KO + HEBCan d8 EB-derived cells. (F and G) Percentages (F) and numbers (G) of CD34 + cells in WT, KO + GFP, and KO + HEBCan d8 EBs. (H) Flow-cytometric analysis for CD34 and CD45 on WT, KO + GFP, and KO + HEBCan d18 EB-derived cells. (I and J) Percentages (I) and numbers (J) of CD34/CD45 subsets in WT, KO + GFP, and KO + HEBCan d18 EB-derived cells. (K) Numbers of erythroid (BFU-E) and myeloid (CFU-GM) arising from unfractionated WT, KO + GFP, and KO + HEBCan d18 EBs. Error bars represent mean +- SD (n = 3 independent experiments). * p < 0.05, ** p < 0.01, *** p < 0.005 by Student's t test. Images in (A) and (B) and plots in (E) and (H) are represent

Supportive validation

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Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Experimental details: NULL

Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Experimental details: NULL

Supportive validation

Submitted by: Invitrogen Antibodies (provider)
Main image
Experimental details: Fig. 1 WJMSCs isolation and characterization. a Primary cell isolation procedure from Wharton''s jelly tissue. The migrated cells exhibited typical fibroblast-like morphology. Scale bar, 500 mum. b Flow cytometry analysis of P4 cells using mesenchymal stem cell markers (CD90, CD105, CD73), endothelial cell marker (CD31), and MHC class II protein HLA-DR. Isotypic antibodies (IgG1-PE and IgG1-FITC) were used as negative controls. c Representative stained images show that the fourth passage WJMSCs could differentiate into osteocytes (Alizarin Red S), adipocytes (Oil Red O), and chondrocytes (Alcian blue). Scale bar, 100 mum

Supportive validation

Submitted by: Invitrogen Antibodies (provider)
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Experimental details: Figure 5 siRNA transfection and immunophenotyping of differentiated adipose-derived mesenchymal stem cells (AMSCs); (I) : MMP-2 (A) and MMP-14 (B) silencing by siRNA transfection with EGM compared to AMSCs with EGM and EGM plus scrambled siRNA (negative control). GAPDH was used as a housekeeping gene (*, p < .05; **, p < .01; ***, p < .001). (II) : Flow cytometric analysis of PECAM1 (CD31) in five different groups; control group was the undifferentiated cells with EBM (A), AMSCs with differentiation medium EGM (B), AMSCs with differentiation medium EGM and MMP-2 siRNA (C), AMSCs with differentiation medium EGM and MMP-14 siRNA (D), and HUVECs as the positive control (E). Flow cytometry data were analyzed to show the significant differences between the groups (F). (III) : Flow cytometric analysis of VE-Cadherin (CD144) in five different groups; control group was the undifferentiated cells with EBM (A), AMSCs with differentiation medium EGM (B), AMSCs with differentiation medium EGM and MMP-2 siRNA (C), AMSCs with differentiation medium EGM and MMP-14 siRNA (D), and HUVECs as the positive control (E). Flow cytometry data were analyzed to show the significant differences between the groups (F). (*, p < .05; **, p < .01; ***, p < .001). Abbreviations: CD, cluster of differentiation; EBM, endothelial basal medium; EGM, endothelial growth medium; GAPDH, glyceraldehyde-3-phosphate dehydrogenase; HUVECs, human umbilical vein endothelial cells; MMP, matrix metalloproteinases.

Supportive validation

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Experimental details: Figure 7 Immunostaining of VEGFR2 and immunophenotyping of differentiated adipose-derived mesenchymal stem cells (AMSCs) after VEGFR2 kinase inhibition; (I) : Immunofluorescence staining for VEGFR2. AMSCs in EGM showed significant increases in the expression of VEGFR2 (B & E) compared to endothelial basal medium group (A & E). AMSCs cultured with EGM and MMP-2 siRNA showed significantly higher fluorescence intensity of VEGFR2 in comparison to the EGM cultured cells (C & E). AMSCs cultured with EGM and MMP-14 siRNA showed the greatest positive staining of VEGFR2 compared to that of EGM and EGM plus MMP2 siRNA (D & E). Fluorescence intensity was measured to show the significant differences between the groups using ImageJ software (E). (II) : Flow cytometric analysis of PECAM1 (CD31) in three different groups; control group was the differentiated cells with EGM and 5 muM of VEGFR2 inhibitor (A), AMSCs with differentiation medium EGM, MMP-2 siRNA and 5 muM of VEGFR2 inhibitor (B) and AMSCs with EGM, MMP-14 siRNA and 5 muM of VEGFR2 inhibitor (C). Flow cytometry data were analyzed to show the significant differences between the groups in comparison to the same groups without VEGFR2 inhibitor (D). (III) : Flow cytometric analysis of VE-Cadherin (CD144) in three different groups; the differentiated cells with EGM and 5 muM of VEGFR2 inhibitor (A), AMSCs with differentiation medium EGM, MMP-2 siRNA and 5 muM of VEGFR2 inhibitor (B) and AMSCs with EGM, MMP-14 siRNA and 5 muM of VEGFR2

Supportive validation

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Experimental details: Figure 3 Changes in the expression rate of CD31 in the peripheral blood of rats. Rats were randomly divided into the control, sham surgery and S2h, S8h, S24h, S48h and S72h groups, which were examined 2, 8, 24, 48 and 72 h after deep vein thrombosis modeling surgery, respectively. Flow cytometry was used to analyze the positive rate of the peripheral blood endothelial cell marker CD31. (A) Representative flow cytometry plots for each group. (B) Statistical analysis of the CD31 positive rate in each group. * P

Supportive validation

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Experimental details: Fig. 1 In vitro bioactivity of the MSN/miR-21-5p complex. ( A ) In vitro uptake of the MSN/miR-21-5p complex by adherent endothelial cells (ECs) and macrophages (MCs). ( B ) In vitro transfection efficiency of miR-21-5p was determined by quantifying the miRNA level using real-time quantitative PCR. ( C ) Representative flow cytometry analysis of CD31 levels in ECs and F4/80 levels in MCs. ( D ) In vitro uptake of the MSN/miR-21-5p complex by ECs and MCs was determined by quantifying the double-positive cells (CD31 or F4/80 and Cy3) using flow cytometric analysis. The protein expression levels of VEGFA and PDGF-BB in endothelial cells ( E ) and tumor necrosis factor-alpha (TNF-alpha), interleukin-1beta (IL-1beta), and IL-6 in macrophages ( F ) were determined by the real-time quantitative PCR and Western blot analysis. ( G ) The endothelial cells that formed three-dimensional (3D) capillary-like tubular structures were evaluated at indicated times (8 and 16 hours). ( H ) Schematic diagram of the experimental setup. TUNEL, terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end labeling. ( I ) Apoptosis-positive cardiomyocytes from these treatment groups were further quantified. ( J ) Protein levels of secreted proangiogenic factors were determined by enzyme-linked immunosorbent assay (ELISA) analysis of cell supernatants from the MSN/miRNA-treated ECs (scale bars, 50 mum). * P < 0.05 and *** P < 0.01. All experiments were carried out in triplicate. n

Supportive validation

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Experimental details: Fig. 3 Comparable phenotype of primary and expanded endothelial cells. a Phase contrast microscopy shows the expandable HUVEC cell line e-hUVEC-2 (MYC, ID1, and ID2). Scale bar 100 um. b CD31 expression of human endothelial cell populations immortalized with three different gene sets as indicated. c Global gene expression analysis was performed on three different HUVEC lines (e-hUVEC-2, 8 and 9; in duplicate) (3, 4, 5, respectively) and two independent primary HUVEC populations (2) as well as four primary gingiva fibroblast populations (1). Expression data was processed with GeneSpring 11.5.1 software and a Standard Pearson Correlation was determined for each gene versus all other genes. The correlation heatmap depicts the pair-wise correlation coefficient between the given samples and displays the relationship between the different samples. The samples are clustered based on the pair-wise correlation coefficients between all entities. d Phenotypic stability of e-hUVEC-2 cells after 45 and 90 cumulative population doublings was evaluated by CD31 (also known as PECAM1) expression, acetylated LDL uptake, and eNOS activity. Gray fill: antibody isotype control; black outline: stained sample. MFI: median fluorescence intensity. e Immunofluorescence-based detection of CD31 and CD146 (also known as MCAM) in expandable HUVECs counterstained for nuclei with DAPI. Scale bars, 100 um. f The phenotype and the functionality of cell line e-hUVEC-2 (cumulative population doubling 80) was co