Cell Signalling

Cell signalling – Discover G-LISA to study Small GTPases

21/06/2018 By Frédéric Samazan Leave a Comment

As is already known, multiple families of small GTPases (Ras, Arf and Rho families) make up the Ras GTPase superfamily. Due to their role as molecular switches in cell signalling (active GTP-bound state vs inactive GDP-bound states) and in many other cellular responses (cytoskeletal reorganization, regulation of transcription, apoptosis…), these small GTPases are the subject of intense investigation to try to understand the mechanisms that regulate activation and inactivation of this proteins.

In this post, I invite you to discover a revolutionary way to study these cell signalling events by quantifying the level of active small GTPases in your experimental model.

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Cell signalling studies: Tips for selecting the best Small G Protein activation assay

25/04/2018 By Frédéric Samazan Leave a Comment

Small GTP-binding proteins such as Rho and Ras GTPase family members are involved in regulating cell signalling pathways and impact a wide range of cellular processes, functions, and morphology. In this post, you’ll discover two types of Small G-protein Activation Assays to easily measure the GTP-bound form of your protein of interest, as well as some tips for choosing between both solutions and finding the assays that fit best with your cell signalling experiments.

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Cell signalling: How to easily detect mono- and poly-Ub target proteins

26/02/2018 By Philippe Fixe, PhD Leave a Comment

Recently, a new series of ready-to-use reagents for studying post-translation modifications (PTMs) of your proteins of interest have been released by Cytoskeleton, Inc. To illustrate the advantages of these research tools, this post is focuses on ubiquitination detection, which is known to be an important event in cell signalling.

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Cell signalling: Where to find multiplex arrays for glycobiology studies

21/02/2018 By Philippe Fixe, PhD Leave a Comment

How do you detect 300 specific glycan binding proteins in one experiment? Well, in this post we’ll answer this question by introducing the new Glycan Array, developed by RayBiotech for your cell signalling studies.

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Cell Signalling: Ras-Raf-MEK-ERK pathway research tools

07/07/2017 By Isabelle Nobiron Leave a Comment

The Ras-Raf-MEK-ERK Pathway is an important cell signalling route with many implications for cancer biology and therapeutic development. Dis-regulation of some of this pathway’s proteins expression and phosphorylation status are observed in about one-third of all human cancers. Access to specific tools to study this pathway is essential to a better understanding of its role in cancer for novel drug development. If you are working on this topic, you’ll be interested in taking a look at the range of reagents on offer for a wide variety of applications.

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Cell Signalling: MAP Kinase Signalling with phospho ELISA test

27/04/2017 By Isabelle Nobiron Leave a Comment

The mitogen-activated protein kinase (MAPK) signaling pathway is activated by a number of extra and intracellular stimuli including cytokines, growth factors, and hormones as well as stressors such as oxidative and ER stress. This pathways plays a key role in the regulation of many cellular processes including proliferation, differentiation, the stress response, motility, growth, differentiation, survival, and death. Abnormal MAPK signaling may contribute to increased or uncontrolled cell proliferation and/or resistance to apoptosis. To study this complex pathway, several tools are available, from the pathway specific arrays for an initial screen, to phospho-specific ELISA tests for individual target validation. This post aims at helping you to easily identify tools to explore this pathway in your samples (from arrays to phospho-ELISAs). However, I could not start without showing you once more one of these eye-catching illustrations of cell signalling pathways. I’ll let you explore it to dig out the MAPK protein cascade among all of them (a kind of Where’s Wally for the researcher !).

MAP Kinase cell signaling pathway – but which ELISA test or array should you choose to study it?

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