Myotube


Myotube

Un myotube (du grec myo muscle) est un syncytium pluri-nucléé formé par la fusion de plusieurs myoblastes lors de la myogenèse. Les myotubes se différencient ensuite en fibres musculaires sous l'infuence de MRF4, facteur de transcription spécifique du muscle. Au cours de cette différenciation, les myofibrilles s'organisent et s'agencent en sarcomère, le cytosquelette se réarrange, et les noyaux (provenant des myoblastes) se relocalisent à la périphérie, donnant une nouvelle architecture au syncitium.


Wikimedia Foundation. 2010.

Contenu soumis à la licence CC-BY-SA. Source : Article Myotube de Wikipédia en français (auteurs)

Regardez d'autres dictionnaires:

  • myotube — Elongated multinucleate cells (three or more nuclei) that contain some peripherally located myofibrils. They are formed in vivo or i n vitro by the fusion of myoblasts and eventually develop into mature muscle fibres that have peripherally… …   Dictionary of molecular biology

  • myotube — noun a developing skeletal muscle fiber with a tubular appearance …   Wiktionary

  • myotube — A skeletal muscle fiber formed by the fusion of myoblasts during a developmental stage; a few myofibrils occur at the periphery, and the central core is occupied by nuclei and sarcoplasm so that the fiber has a tubular appearance. * * * myo· …   Medical dictionary

  • myotube — ˌ noun Etymology: my + tube : a developmental stage of a muscle fiber composed of a syncytium formed by fusion of myoblasts * * * myˈotube noun A cylindrical cell that develops from a myoblast, representing a stage in the development of muscle… …   Useful english dictionary

  • Synaptogenesis — is the formation of synapses. Although it occurs throughout a healthy person s lifespan, an explosion of synapse formation occurs during early brain development. Synaptogenesis is particularly important during an individual s critical period of… …   Wikipedia

  • CD81 — molecule, also known as CD81 (Cluster of Differentiation 81), is a human gene.cite web | title = Entrez Gene: CD81 CD81 molecule| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene Cmd=ShowDetailView TermToSearch=975| accessdate = ] PBB… …   Wikipedia

  • Dystrophie facio-scapulo-humérale — La dystrophie facio scapulo humérale ou myopathie facio scapulo humérale ou myopathie de Landouzy Dejerine est une affection musculaire héréditaire liée à une anomalie située sur le chromosome 4. Actuellement, seule la kinésithérapie est utile… …   Wikipédia en Français

  • Cell type — A cell type is a distinct morphological or functional form of cell. When a cell switches state from one cell type to another, it undergoes cellular differentiation.AnimalsHumansDifferent cell types react differently to external stimuli. For… …   Wikipedia

  • Cell growth — The term cell growth is used in two different ways in biology. When used in the context of reproduction cells of living cells the phrase cell growth is shorthand for the idea of growth in cell populations by means of cell reproduction. During… …   Wikipedia

  • CD9 — molecule Identifiers Symbols CD9; BTCC 1; DRAP 27; FLJ99568; MIC3; MRP 1; TSPAN 29; TSPAN29 External IDs …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.