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tebu-bio's blog - Acting and reacting in life sciences and biotechnologies
  • Home
  • Research areas
    • ADME-Tox
    • Biomarkers
    • Cell Biology and Signalling
    • Cell Sourcing – Cell Culture Technologies
    • Drug Discovery
    • Gene Expression – Molecular Biology
    • Stem Cells
    • Supplying Discovery Tools
  • Contact us
  • Meet the authors
Supplying Discovery Tools

Basics about insulin and dedicated research tools

14/07/2015 by Ana Arraztio No Comments
Human Pancreatic Islets - Prodo Laboratories

Diabetes is a major health concern. And its research can be a nightmare sometimes. tebu-bio strive to offer a comprehensive range of research tools and services to study Obesity, Diabetes, and Metabolic syndrome (including pancreatic islet cells), and tools to unravel signaling mechanisms in insulin secretion. Anyhow, it might be good, though, to go back to the basics from time to time. Let’s remember our graduate courses (more or less years ago) about Insulin and its biological roles.

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News

RhoA/ROCK and F-actin modeling involved in Insulin secretion

21/08/2014 by Philippe Fixe, PhD No Comments
Research and Development, research applications

This is the conclusion of Liu X. et al. who demonstrated, in a mouse model, that RhoA/ROCK signaling pathway modulates insulin secretion of 3D cultured islet pancreatic ß-cells. This modulation is made through the regulation of Connexin 36.

Cell-permeable C3 transferase (C3T; Cytoskeleton Inc.) and the small molecule Y-27632 ROCK inhibitor (Stemgent-Asterand) were used in these studies.

External links regarding RhoA/ROCK in insulin secretion of pancreatic ß-cells

  • Liu X. et al. “Involvement of RhoA/ROCK in insulin secretion of pancreatic ß-cells in 3D
    Anti RhoA Human in WB analysis Cytoskeleton tebu-bio ARH03

    Western blot detection of RhoA (cat. nr ARH03) in cell extracts (50 µg each) of rat NRK cells (lane 1), human HeLa cells (lane 2), bovine brain extract (lane 3), and human platelet cell extract (lane 4).

    culture” (2014) Cell Tissue Res. DOI: 10.1007/s00441-014-1961-2

  • Cell permeable C3 transferase (cat. nr CT04), inhibits cellular Rho within 2-4h
  • Selective Rho Kinase (ROCK) inhibitors and anti Human RhoA antibody (a Mouse monoclonal that only recognizes RhoA, not RhoB, RhoC, Rac1, Rac2, Rac3, Cdc42 or H-Ras).

I hope you will enjoy this new publication. Don’t hesitate to leave your comments or remarks regarding the use of bioactive small molecules in signal transduction studies.

Supplying Discovery Tools

Obesity, Diabetes, Metabolic syndrome new research tools

09/06/2014 by Philippe Fixe, PhD No Comments
Human Islets for Research (HIR from Prodo Labs)

Insulin and Glucagon are involved in glucose homeostasis in addition to other factors secreted by the adipose tissue (adipokines). Insulin and Glucagon are produced by the endocrine pancreas. While Glucagon is released by alpha-cells of the islets of Langerhans to raise glycemia when blood glucose levels fall too low, Insulin has the opposite effect. Insulin is produced by beta-cells of the islets of Langerhans. It allows glucose to be taken up from the bloodstream when blood glucose levels are high and to be used by insulin-dependent tissues (liver, skeletal muscles, fat tissue…).

Let’s take a look at a selection of immuno-assays and primary cells for analysing these two hormones and the recentlly launched primary Human Islet cells.

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