On the importance of extracellular matrix of the skin for efficient 3D cell culture models

The extracellular components of the skin can be divided into fiber-forming structural molecules, nonfiber-forming structural molecules, and “matricellular proteins”. Optimal quantities of different matrix components and their delicate interactions are necessary to maintain normal physiologic properties of the skin. Fiber-forming molecules provide a structure to the ECM by creating a Read more…

Impact of neurodegenerative diseases on extracellular space organization and diffusion through hyaluronan remodeling

Soria et al. has published this year an interesting study about the modification leading by synucleopathy on the nanoscale organization and diffusivity of the extracellular space, through hyaluronan remodeling. Indeed the extracellular space (ECS), composed by the interstitial fluid and the extracellular matrix (ECM), plays several roles in health and Read more…

3D co-culture of dopaminergic neurons and astrocytes in BIOMIMESYS® Brain to study Parkinson’s disease

Parkinson’s disease affects more than 6 million people worldwide. This neurodegenerative disease is characterized by the death of dopaminergic neurons in the substantia nigra pars compacta, with intracellular accumulation of alpha-synuclein aggregates known as Lewi bodies. This neuronal loss leads to a decrease in the neurotransmitter dopamine that cause mainly Read more…

The ExtraCellular Matrix: a focus on GlycosAminoGlycans and Hyaluronan

The extracellular matrix (ECM) is a three-dimensional macromolecular network composed of structural proteins (collagens, elastin), adhesion/signalling proteins (fibronectin, laminins), different proteoglycans, glycoproteins and glycosaminoglycans (GAGs). GAGs are structurally complex, but their structure is simply made up of repeating disaccharide building blocks composed of alternating uronic acid and hexosamine units. GAGs Read more…

Influence of the extracellular matrix on cancer cell proliferation and migration

Extracellular matrix (ECM) is known to have an influence on physiological processes and on tumour progression: ECM properties (composition, stiffness) modulate cell proliferation, migration, invasion and epithelial-to-mesenchymal transition (EMT). For example, EMT is inhibited by laminin-rich environment whereas it is promoted in fibronectin-rich ECM (Chen et al 2013. Differentiation 86, Read more…