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6 protocols using anti jagged1

1

Modulation of NK cell function by DSC

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NK cells were cultured in RPMI-1640 10% FCS and 10 ng/mL IL15 (Miltenyi Biotec), in 24-well flat bottom plates either in the absence or in the presence of DSC (NK/DSC ratio: 5/1). At the indicated time intervals NK cells were harvested and analyzed. When indicated, 0,25 mM 1-MT (Sigma–Aldrich) and/or 5 uM NS-398 (Cayman Chemicals) and 10 µg/ml anti-Jagged-1 (R&D systems) were added at the onset of co-cultures. In some experiments, transwell inserts (Corning incorporated, 6,5 mm/0,4 µm) were used to separate NK from DSCs.
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2

Flow Cytometric Analysis of Notch Signaling

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Cells were washed once with cold PBS, prior to dissociation with Versene (Life Technologies), washed twice more in PBS / 0.1% Fetal calf serum, blocked in 1% mouse or rabbit serum before incubation with combinations of the following fluorochrome-conjugated antibodies: anti-NOTCH1 (Ebioscience, 17-9889, 1:50); anti-JAGGED1 (R&D systems, FAB1726A, 1:8); anti-latency associated peptide (Ebioscience, 17-9829, 1:20). Cells were then washed twice more, before fixation with 4% PFA and analysis on a FACSCalibur (Becton Dickenson). Flow-based cell sorting was conducted on a FACSAria II cytometer (Becton Dickenson). Flow data was analysed with FlowJo v10.
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3

Immunodetection and Western Blotting Protocols

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For immunodetection: anti-Smad4 (#38454, 1:200, Cell Signaling), anti-Jagged1 (AF599, 1 μg/ ml, R&D systems), anti-α-SMA (CY3-SMA, #C6198, 1:200, Sigma), anti-pS6 (#5364, 1:200, Cell Signaling), IB4 (#121412, 10 μg/ml, Life Technologies), anti-FOXO1 (#2880, 1:100, Cell Signaling), anti-cMYC (#6340, 1:100, Millipore), anti-KLF4 (#AF3158, 1:200, R&D systems), anti-NG2 (#Ab5320; 1:200, EMD Millipore), anti-PH3 (#06570; 1:500, EMD Millipore), anti-EPHB4 (#AF446, 1:100, R&D systems), anti-UNC5B (#AF1006, 1:100, R&D systems) anti-NRP2 (#AF567, 1:100, R&D systems).
For western blotting: anti-ALK1 (7R-49334, 1:1000, Fitzgerald), anti-Smad4 (#38454, 1:1.000, Cell Signaling), anti-pAKT (#4060, 1:1.000, Cell Signaling), anti-AKT (#9272, 1:1.000, Cell Signaling), anti-pPTEN (#9549, 1:1.000, Cell Signaling) and anti-PTEN (#9188, 1:1.000, Cell Signaling) and anti β-ACTIN (#A1978 1:3000, Sigma).
Appropriate secondary antibodies were fluorescently labelled (Alexa Fluor donkey anti-rabbit, Alexa Fluor donkey anti-goat) or conjugated to horseradish peroxidase (Anti-Rabbit and Anti-mouse IgG (H+L), 1:8.000, Vector Laboratories).
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4

Flow Cytometric Analysis of Notch Signaling

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Cells were washed once with cold PBS, prior to dissociation with Versene (Life Technologies), washed twice more in PBS / 0.1% Fetal calf serum, blocked in 1% mouse or rabbit serum before incubation with combinations of the following fluorochrome-conjugated antibodies: anti-NOTCH1 (Ebioscience, 17-9889, 1:50); anti-JAGGED1 (R&D systems, FAB1726A, 1:8); anti-latency associated peptide (Ebioscience, 17-9829, 1:20). Cells were then washed twice more, before fixation with 4% PFA and analysis on a FACSCalibur (Becton Dickenson). Flow-based cell sorting was conducted on a FACSAria II cytometer (Becton Dickenson). Flow data was analysed with FlowJo v10.
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5

Immunohistochemical Analysis of Kidney Development

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anti-jagged1 (R&D Systems, Minneapolis, MN), anti-E-cadherin (BD Transduction Laboratories, UK), anti-wt1 (Santa Cruz, Dallas, TX), anti-LEF1 (Cell Signaling, The Netherlands), anti-Pax8 (Proteintech Europe, UK), anti-Pax2 (Covance, Princeton, NJ), anti-phospho-β-cat (S33, S37, T41) (Cell Signaling), anti-phospho-β-cat (S45) (Cell Signaling), pan β-cat (SIGMA), anti-dephospho-β-cat (AG Scientific, San Diego, CA), anti-podocalyxin, anti-laminin (SIGMA), LTL (Vector Labs, Burlingame, CA), anti-ZO1 (DSHB, Iowa City, IA), anti-pSMAD (Cell Signaling), anti-pAKT (Cell Signaling), 6-CF (SIGMA), PNA (Vector Labs), Annexin V (Biovision, San Francisco, CA), TUNEL (ROCHE, Switzerland), anti-phospho-β-cat (S552) (Cell Signaling).
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6

Multiparametric Analysis of Notch Signaling in Leukemia

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The antibodies used for FACS analysis were: mouse IgG2b-FITC, goat IgG-PE, anti-Jagged1-FITC, anti-Dll3-PE (all from R&D System, Minneapolis, MN), mouse IgG2a-PE, mouse IgG1κ-PE, mouse IgG1-Alexa Fluor 488,anti-Notch1-PE, anti-Notch2-PE, anti-Notch3-PE, anti-Notch4-PE, anti-Dll1-PE, anti-Dll4, anti-Bax-Alexa Fluor 488 (all from Biolegend, San Diego, CA) and rabbit anti-Bcl-2-FITC (DAKO). For leukemia cell identification we used anti-CD45-VioBlue, anti-CD45-APC-Vio770, anti-CD34-PerCP and anti-CD117-APC (all from MiltenyiBiotec, Germany). The antibodies employed for western blot analysis anti-Notch2, anti-Notch4 were from Santa Cruz (Biotechnology, Dallas, TX), anti-GAPDH and HRP conjugated secondary antibodies against mouse, rabbit or goat were from Sigma Aldrich. All the other antibodies used for Western blot were from Cell Signalling. Neutralizing antibodies,all used at a final concentration of 5 μg/ml, were: anti-Notch1, anti-Notch3,anti-Jagged1, anti-Jagged2, anti-Dll1 and anti-Dll4 (R&D Systems); anti-Notch-4 (Santa Cruz Biotechnology); anti-Dll3 (CST, Boston, MA). Recombinant human Jagged-1 and Jagged-2 were from R&D System. GSI-IX (DAPT) was purchased from Stemgent (Cambridge, MA) GSI-XII and SAHM1 were from Merck Millipore (Darmstadt, Germany). Cytarabine (Ara-C), Etoposide (Eto) and Idarubicin (Ida) were provided by Pharmacy Unit of the University Hospital of Verona.
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