DNA methylation profiling Gene specific profiling whole blood (human)

Get tips on using ChIP-IT® Express Chromatin Immunoprecipitation Kits to perform ChIP Human - ASM

Get tips on using ChIP-IT® Express Chromatin Immunoprecipitation Kits to perform ChIP Human - RCC

Get tips on using ChIP-IT® Express Chromatin Immunoprecipitation Kits to perform ChIP Human - PBMC

Get tips on using ChemiKine Brain Derived Neurotrophic Factor, Sandwich ELISA to perform ELISA Human - GDNF

RNAi or RNA interference is a common method to suppress gene expression in vitro/in vivo by utilizing the inherent microRNA machinery, without introducing a total gene knockout. miRNA is the inherent gene silencing machinery which can have more than one mRNA target, whereas siRNA can be designed to target a particular mRNA target. By design, both siRNA and miRNA are 20-25 nucleotides in length. The target sequence for siRNAs is usually located within the open reading frame, between 50 and 100 nucleotides downstream of the start codon. There are two ways in which cells can be transfected with desired RNAi: 1. Direct transfection (with calcium phosphate co-precipitation or cationic lipid-mediated transfection using lipofectamine or oligofectamine), and 2. Making RNAi lentiviral constructs (followed by transformation and transduction). Lentiviral constructs are time-consuming, but provide a more permanent expression of RNAi in the cells and consistent gene silencing. Direct transfection of oligonucleotides provides temporary genetic suppression. Traditional methods like calcium phosphate co-precipitation have challenges like low efficiency, poor reproducibility and cell toxicity. Whereas, cationic lipid-based transfection reagents are able to overcome these challenges, along with applicability to a large variety of eukaryotic cell lines.

Get tips on using Live/Dead cell Staining Kit II to perform Live / Dead assay mammalian cells - SH-SY5Y Human neuroblastoma

Get tips on using LIVE/DEAD™ Cell Imaging Kit to perform Live / Dead assay mammalian cells - SH-SY5Y Human neuroblastoma

Get tips on using Live/Dead cell Staining Kit II to perform Live / Dead assay mammalian cells - bmMSCs human bone marrow

Get tips on using Live and Dead Cell Assay (Abcam) to perform Live / Dead assay mammalian cells - human Mesenchymal stem cells

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.