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Irdye 680

Manufactured by Rockland Immunochemicals
Sourced in Panama

IRDye 680 is a near-infrared fluorescent dye. It has an excitation wavelength of 680 nm and an emission wavelength of 700 nm. The dye can be used for a variety of applications, including cell and tissue imaging, protein labeling, and other fluorescence-based assays.

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7 protocols using irdye 680

1

Antibody Validation for Serotonin and PLD

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Primary antibodies include: 5-HT2CR detected by mouse monoclonal D-12 (sc-17797, Santa Cruz; 1:100); 5-HT2CR detected by goat polyclonal N-19 (sc-15081, Santa Cruz; 1:250); PLD1 detected by rabbit polyclonal H-160 (sc-25512, Santa Cruz; 1:100); PLD2 detected by rabbit polyclonal H-133 (sc-25513, Santa Cruz; 1:100); monoclonal mouse anti-b-actin (MAB1501, Chemicon International, Temecula, CA, 1:5000); monoclonal mouse anti pan-cadherin (C-19, Abcam, Cambridge, MA, 1:5000); Phospho-PLD1 (Thr147, pPLD1T147) (#3831, Cell Signaling Technology, Danvers, MA, 1:1000); Phospho-PLD1 (Ser561, pPLD1S561) (#3834, Cell Signaling Technology, Danvers, MA, 1:1000); Phospho-PLD2 (Phospho-Tyr169, pPLD2Y169) (A8400, Assay Biotech, Sunnyvale, CA, 1:1000). Secondary antibodies included infrared-labeled goat anti-mouse (IRDye 680; 926–32220, LI-COR Biosciences, Lincoln, NE); goat anti-rabbit (IRDye 800; 827–08365, LI-COR Biosciences); donkey anti-goat (IRDye 800CW; 605-731-125, Rockland Immunochemicals, Inc., Gilbertsville, PA) and sheep anti-mouse (IRDye 680, Rockland Immunochemicals).
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2

Baculovirus Protein Expression Analysis

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Baculoviruses were lysed with loading buffer containing 2% 2-mercaptoethanol, boiled for 5 min. The lysates were separated by 8% SDS-PAGE and transferred to polyvinylidene fluoride membranes, and then probed with either of the following: an anti-PfCSP mouse mAb (2A10) or an anti-hDAF mouse mAb (anti-CD55, Merck Millipore, Temecula, CA), together with an anti-VP39 rabbit Ab [14 (link)]. Blots probed with the appropriate secondary Abs conjugated to IRDye 680 and IRDye 800 (Rockland Immunochemicals, Gilbertsville, PA) in the same membranes were visualized using an Odyssey infrared imager (LI-COR, Lincoln, NE). The molecular weight predictions were carried out on the ExPASy server, and densitometry analyses were performed using Image Studio Digits (LI-COR).
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3

Alix Immunoblotting in EV and Soluble Proteins

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EV and soluble protein fractions were immunoblotted with anti-Alix primary antibody (3A9, Cell signaling), followed by secondary antibody conjugated with IRDye 680 (Rockland). Fluorescent signals were detected with an Odyssey infrared imaging system (LI-COR Biosciences).
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4

Immunoblotting of Cellular and mRNP Proteins

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For immunoblotting of whole cell lysates and purified mRNPs, rabbit anti-UPF1 (H-300, Santa Cruz) and mouse anti-PABC1 (10E10, Abcam) were used. Secondary antibodies labeled with IRDye 680 or IrDye 800 (Rockland) were detected using an Odyssey imaging system (Li-Cor).
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5

Quantitative Protein Analysis by Western Blot

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After performing specific treatments, cells were harvested and washed three times with PBS. After insoluble debris was pelleted by centrifugation at 15,000 g for 15 min at 4 °C, the supernatants were collected and examined for protein concentrations using the bicinchoninic acid (BCA) kit (Pierce, USA) according to the manufacturer’s instructions. Proteins were separated by electrophoresis on SDS-polyacrylamide gel electrophoresis (PAGE) and electro-transferred to nitrocellulose filter (NC) membrane. After being blocked for 2 h in 5% bovine serum albumin (BSA), membranes were incubated overnight at 4 °C with the following primary antibodies: anti-Rap2B, anti-p-ERK1/2, anti-ERK1/2 and anti-β-actin. Membranes were then washed and incubated with secondary antibodies conjugated with IRDye 680 or IRDye 800 (Rockland). Fluorescent signals were visualized with Odyssey infrared imaging system (Li-COR Lincoln, NE).
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6

Quantitative Staphylococcal Antigen Profiling

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Recombinant staphylococcal antigens were affinity purified - SpAKKAA, clumping factor A (ClfA) and B (ClfB), iron-regulated surface determinant B (IsdB), Panton-Valentin Leukocidin subunit F (LukF), coagulase (Coa) and von-Willebrand factor binding protein (vWbp) - and 2 μg each protein was blotted onto nitrocellulose membrane. Membranes were blocked with 5% whole milk, followed by incubation with hyper-immune sera (1:10,000 dilution). IRDye 680 conjugated affinity purified anti-mouse IgG (Rockland) was used to quantify signal intensities (A700) using the Odyssey infrared imaging system (Li-cor).
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7

Western Blot Analysis of Protein Samples

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For each sample equal amounts of total protein (12 μg) mixed with 5x loading buffer (153 mM TRIS pH = 6.8, 7.5% SDS, 40% glycerol, 5 mM EDTA, 12.5% 2-β-mercaptoethanol and 0.025% bromophenol blue) were loaded into 10% SDS-polyacrylamide gels, and transferred to a PVDF membrane (Immobilion-P, Millipore, Cat# IPFL00005). 5% BSA in Tris-buffered saline (TBS) (100 mmol/L NaCl, 10 mmol/L Tris, pH = 7.4) and 0.1% Tween-20 was used to block membranes for 1 hr and then immunoblotting of the membranes was performed overnight at 4°C by incubating with the primary antibodies listed in Table 3. Finally, a 1 hr incubation of the membranes with their respective secondary fluorescent antibodies: anti-mouse (1:2500, IRDye 800, Rockland, Cat# 610-132-121) and anti-rabbit (1:2500, IRDye 680, Rockland, Cat# 611-144-002) was performed. Immunoreactive bands were detected using a LI-COR Odyssey scanner (LI-COR Biosciences). Normalization of protein densities compared to the expression signal of the housekeeping gene in the same samples was performed and expressed relative to the P7 time-point.
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