FACS CD14

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Flow cytometry is an immunophenotyping technique whereby sing cell suspensions are stained for either cell surface markers or intracellular proteins by fluorescently-labelled antibodies and analyzed with a flow cytometer, where fluorescently-labelled molecules are excited by the laser to emit light at varying wavelengths, which is then detected by the instrument. There are several key criteria which are required to be kept in mind while designing a flow experiment- 1. Antibody titration (optimal dilution of antibodies should be calculated in order to avoid over- or under- saturated signals for proper detection of surface and intracellular markers), 2. Precision (3 or more replicates of the sample should be used per experiment), 3. Specificity (proper isotype controls should be included in the experiment), 4. Day-to-day variability (experiments should be repeated 3 or more times to ensure consistency and avoid variability due to flow cytometer settings), 5. Antibody interaction (Fluorescence minus one or FMO should be used, which is the comparison of signals from panel minus one antibody vs. the full panel), and 6. Antibody stability (fluorescently-labelled antibodies should be stored at 4C).

Proteins Flow cytometry Anti-bodies Human CD14

Protein isolation is a technique that involves isolation and/ or purification of protein from cells or tissues via chromatography or electrophoresis. The major challenges in protein isolation include: 1. The concentration of proteins in cells is variable and tends to be small for some intracellular proteins. Unlike nucleic acids, proteins cannot be amplified. 2. Proteins are more unstable than nucleic acids. They are easily denatured under suboptimal temperature, pH or salt concentrations. 3. Finally, no generalized technique/protocol can be applied for protein isolation. Proteins may have different electrostatic (number of positively or negatively charged amino acids) or hydrophobic properties. Therefore, protein purification requires multiple steps depending on their charge (a negatively charged resin/column for positively charged proteins and vice-versa), dissolution (using detergents) and unlike in the case of DNA and RNA, instead of using salts, proteins should be isolated by isoelectric precipitation.

Proteins Protein isolation Mammalian cells Human CD14+ cells

When extracting nucleic acids from cell cultures, thorough homogenization of cells via vortexing in lysis buffer is very necessary. Choose the best RNA isolation method keeping in mind the downstream applications, generally, column-based isolations result in clean and concentrated RNA samples. Downstream applications like sequencing and cDNA synthesis require high-quality RNA, always treat the samples with DNases and check their integrity by running a gel.

RNA RNA isolation / purification Cells primary human CD14+ monocytes

Get tips on using Phalloidin–Tetramethylrhodamine B isothiocyanate to perform FACS Phalloidin - Amanita phalloides Human TRITC

Products Sigma-Aldrich Phalloidin–Tetramethylrhodamine B isothiocyanate

Get tips on using PerCP-Cy5-labeled CD66b to perform FACS CD66b - Mouse Human PerCP-Cy5

Products BioLegend PerCP-Cy5-labeled CD66b

Get tips on using RNeasy Mini Kit to perform RNA isolation / purification Cells - primary human CD14+ monocytes

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Get tips on using RNeasy Plus Mini Kit to perform RNA isolation / purification Cells - primary human CD14+ monocytes

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Get tips on using AllPrep DNA/RNA Mini Kit to perform RNA isolation / purification Cells - primary human CD14+ monocytes

Products Qiagen AllPrep DNA/RNA Mini Kit

Get tips on using CelLytic™ MT Cell Lysis Reagent to perform Protein isolation Mammalian cells - Human CD14+ cells

Products Sigma-Aldrich CelLytic™ MT Cell Lysis Reagent

Get tips on using PE Mouse Anti-Human CD140a to perform Flow cytometry Anti-bodies Human - CD140/PDFGR2

Products BD Biosciences PE Mouse Anti-Human CD140a

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