Posts Tagged ‘Bio-Rad Laboratories’

The Answer to Fading Western Blots

 :: Posted by American Biotechnologist on 05-29-2014

Publications have become very strict when it comes to publishing research that includes images of blots, often requiring images of the full blot, uncut. To keep the membranes uncut, researchers often reprobe which can cause the marker to fade.

Bio-Rad has launched the brightest protein marker available to researchers which addresses such challenges. The Precision Plus Dual Protein Standard is not only brighter, but also stays on the membrane longer. This allows researchers to identify proteins more effectively and have greater confidence in their western blots.

The strong marker persistence of the Precision Plus Protein™ Dual Color Standards throughout electrophoresis and western blotting, even during rigorous stripping and reprobing protocols, makes the product a more effective tool for monitoring separation and estimating protein molecular weights.

“Providing the images of the entire blot is good practice for science and publications,” said Dr. Federica del Monte, assistant professor of medicine at Harvard Medical School. “In order to reprobe for the loading control and keep the membranes uncut, we sometimes need to strip them. This often results in fading of the markers. The ability to publish clear blots with the marker still on is very important.”

Key benefits of the new Precision Plus Protein Dual Color Standards include:

  • Increased brightness — better identification of target proteins on gels and blots as well as easier monitoring of gel electrophoresis and confirmation of transfer quality
  • Stronger marker persistence — marker remains on the blot even under the most rigorous conditions, boosting confidence in your western blots; stronger marker persistence also facilitates accurate molecular weight estimation

Bands in the Precision Plus Protein Dual Color Standards range from 10 to 250 kD with sharp pink reference bands at 25 and 75 kD for simple visualization. The new Dual Color Standards share the same migration pattern as their previous iteration.

Improving Visibility of qPCR Reaction Mixtures

 :: Posted by American Biotechnologist on 05-14-2014

Bio-Rad Laboratories recently announced the launch of its Precision Blue real-time PCR dye, making it easier for researchers to set up real-time PCR (qPCR) experiments.

The blue dye improves the visibility of qPCR reaction mixtures, enabling loading of small volume reactions with greater speed, accuracy, and precision. Applications such as single nucleotide polymorphism (SNP) genotyping and high-throughput gene expression analysis using 384-well plates will particularly benefit from use of this dye.

Precision Blue dye is compatible with Bio-Rad’s universal qPCR supermixes (iTaq™ universal and SsoAdvanced™ universal supermixes) and does not interfere with SYBR® Green- or probe-based detection. The dye can be used with all Bio-Rad CFX real-time PCR systems and all other vendors’ real-time PCR systems.

For convenience, Precision Blue can be added directly to the supermix or used as a component of a reaction master mix. The dye is concentrated 200x, and delivers 500 x 20 µl reactions.

For more information about Precision Blue dye, please visit www.bio-rad.com/PrecisionBlue.

Staining of Live Cells for Multicolor Flow Cytometry Experiments

 :: Posted by American Biotechnologist on 05-07-2014

Cytotrack_productsBio-Rad Laboratories, Inc. today announced the launch of its CytoTrack Cell Proliferation Assays that provide unmatched flexibility when designing a multicolor flow cytometry experiment, allowing researchers to efficiently stain and track live cells in four colors for up to 10 generations — two more generations than other currently available methods can follow.

CFDA-SE, the most commonly used reagent for monitoring cell proliferation, is difficult to use in multicolor experiments because it has the same spectra as green fluorescent protein and the most frequently used fluorophore, fluorescein.

Unlike CFDA-SE and other popular cell proliferation assays that are available in only one color, Bio-Rad’s CytoTrack Assays are available in four different emission wavelengths ranging from blue to far red. This allows researchers to choose the one most suitable for their multicolor flow cytometric experiment.

The CytoTrack Assay dye reacts with primary amines using a proprietary chemistry that provides effective labeling of cells without the large efflux usually seen with CFDA-SE.

“This unique feature allows researchers to easily visualize up to 10 cell divisions, making it ideal for those interested in studying the induction and inhibition of cell division in any in vitro experimental model,” said Mary Thao, Bio-Rad Product Manager in the Gene Expression Division.

CytoTrack Assays come in easy-to-use vials with material sufficient for 50 experiments. The dye can be added directly into the culture medium, allowing researchers to save time.

Bio-Rad offers additional reagents and consumables to complete each step of flow cytometry experiments, such as cell viability assays, primary antibodies, and antibody labeling kits.

For more information about Bio-Rad’s cell proliferation assays, please visit bio-rad.com/cellproliferation

Bio-Rad Laboratories Awarded Best New Life Sciences Product of 2013

 :: Posted by American Biotechnologist on 05-01-2014

SelectScience was delighted to announce the QX200™ Droplet Digital™ PCR System, by Bio-Rad, as the winner of the Scientists’ Choice Award for Best New Life Sciences Product of 2013. The award was presented to Bio-Rad at the American Association for Cancer Research (AACR) Annual Meeting 2014.

Click on the photo below to navigate to the SelectScience website and view the video.

select science ddpcr award

2-D Electrophoresis Tips & Tricks – Part II

 :: Posted by American Biotechnologist on 04-28-2014

In part I of the 2-D electrophoresis series (2DGE), Bio-Rad Laboratories’ Anton Posch talked about proper sample preparation techniques for good 2DGE. In this second and final part of the series, Dr. Posch covers IEF separation, using immobilized pH gradient (IPG) strips, running second-dimension PAGE, spot detection, gel matching, and data analysis. If you want to perform great 2DGE, it is well worth your while to watch these two tutorials.