The recent recognition that de novo lipogenesis might have relevance for lipid homeostasis in skeletal muscle stems from the realization that Sterol regulatory element binding protein - 1c (SREBP - 1c), a member of the family of transcription factors that regulate the expression of genes involved in lipid storage in liver and adipose tissue, is also present in skeletal muscle at a level close to that observed in the liver, 41,42... [M] ost fascinating are the very recent demonstrations that glucose alone (in the absence of insulin) can stimulate de novo lipogenesis
in skeletal muscle cells....
Leucine facilitates the insulin - stimulated glucose uptake and insulin signaling
in skeletal muscle cells: involving mTORC1 and mTORC2.
Hirabara SM, Curi R, Maechler P. Saturated fatty acid - induced insulin resistance is associated with mitochondrial dysfunction
in skeletal muscle cells.
LPL activation
in skeletal muscle cells and its suppression in adipocytes by Cy -3-g were blocked by inhibition of pAMPK.
Myostatin, a member of the TGFβ superfamily of growth factors that is expressed primarily
in skeletal muscle cells, is a genetically validated target that regulates muscle mass.
Dr. Espen Spangenburg, associate professor of kinesiology, and his laboratory team are the first to identify that the BRCA1 protein is expressed in the skeletal muscle of both mice and humans, and that it plays a key role in fat storage, insulin response and mitochondrial function
in skeletal muscle cells.
Not exact matches
Multi-nucleus
cells expressing genes needed to form
skeletal muscle can be seen
in flower - like clumps forming as
cells fuse together.
«
In normal conditions,
skeletal muscle is a self - healing tissue and can recover promptly from most trauma because of the satellite
cells.
Specialized stem
cells known as satellite
cells reside
in skeletal muscle in an inactive state.
Researchers at the University of Louisville have discovered a mechanism involved
in skeletal muscle repair that may enable clinicians to boost the effectiveness of adult stem
cell therapies for diseases such as muscular dystrophy.
Once the UCLA researchers had produced iPS
cells that were free from Duchenne mutations, they differentiated the iPS
cells into cardiac
muscle and
skeletal muscle cells and then transplanted the
skeletal muscle cells into mice that had a genetic mutation
in the dystrophin gene.
Among the 19 study volunteers who lost 5 percent of their body weight, the function of insulin - secreting beta
cells improved, as did insulin sensitivity
in fat tissue, liver and
skeletal muscle tissue.
«While these tumors appear to be
muscle cells under the microscope, and clinicians had thought that they arose from
muscle progenitor
cells, that didn't explain why the tumors can occur
in tissues that don't have
skeletal muscle, like bladder, prostate and liver,» he continued.
«Under no circumstances should it be concluded from our work that consumption of marijuana can be a way to cure diabetes,» Prof. Dobrzyn warns and explains: «The concentration of glucose
in the blood is determined by the balance between the activities of alpha and beta
cells of the pancreas and insulin target tissues such as
skeletal muscle and adipose tissue.
This shows fat accumulation (green)
in human
skeletal muscle cells (red) that either express BRCA1 (left) or do not express BRCA1 (right).
This was done using shRNA technology specific for BRCA1
in human myotubes (
skeletal muscle fiber
cells).
The hamburger was grown
in Post's lab using bovine
skeletal muscle stem
cells, collected from a piece of fresh beef.
«This is a clean demonstration that the physiological and metabolic benefits of exercise radiate to
skeletal muscle satellite
cells, the adult stem
cells responsible for repair after injury, even
in senescent animals,» said Thoru Pederson, Ph..
«People used to think that this region of the medulla was only involved
in the paralysis of
skeletal muscles during REM sleep,» said lead author Yang Dan, a UC Berkeley professor of molecular and
cell biology and a Howard Hughes Medical Institute Investigator.
«The vitamin D receptor is expressed
in insulin - secreting pancreatic beta
cells and
in peripheral target tissues such as
skeletal muscle and adipose tissue.
Once they were able to isolate
skeletal muscle cells using the newly identified surface markers, the research team matured those
cells in the lab to create dystrophin - producing
muscle fibers.
These
cells can be used
in a variety of tissue types, including bone, cartilage, fat,
skeletal muscle, smooth
muscle and cardiac
muscle.
In vitro experiments in myogenic cells initially suggested that IL - 15 was an anabolic factor for skeletal muscle, able to stimulate the accumulation of contractile protein in differentiated myotubes (8 — 10
In vitro experiments
in myogenic cells initially suggested that IL - 15 was an anabolic factor for skeletal muscle, able to stimulate the accumulation of contractile protein in differentiated myotubes (8 — 10
in myogenic
cells initially suggested that IL - 15 was an anabolic factor for
skeletal muscle, able to stimulate the accumulation of contractile protein
in differentiated myotubes (8 — 10
in differentiated myotubes (8 — 10).
Pennington Biomedical's research enterprise includes approximately 70 world - class faculty researchers and specialists
in neuroscience, stem
cell biology,
skeletal muscle biology, statistical genetics, diabetes, behavior modification, eating disorders and other areas.
Human triglyceride - rich lipoproteins impair glucose metabolism and insulin signalling
in L6
skeletal muscle cells independently of non-esterified fatty acid levels.
It is characterized by the wasting of
skeletal muscles and caused by progressive degeneration of nerve
cells in the spinal cord; the disease leads to increasing muscular weakness, atrophy and premature death due to respiratory problems.
The findings
in a recent issue of
Cell demonstrate how PGC - 1a1, a transcriptional coactivator induced
in skeletal muscle by exercise and endurance, protects the brain from depression.
We investigated the role of Srf
in two cellular compartments of mouse
skeletal muscle (myofibers and adult
muscle stem
cells) upon different perturbation of
muscle homeostasis (hypertrophy, atrophy, regeneration).
These endogenous
muscle stem
cells promote regeneration of
skeletal muscles after injury and that participate
in adaptation to exercise.
Characterized other proteins and pathways that modulate proliferation and differentiation of myogenic stem
cells, hypertrophic growth of the heart, mitochondrial biogenesis and fiber type — specific gene expression
in skeletal muscles.
The gene, known as gata5, acts
in embryonic
cells, which are primordial, unspecialized
cells that form
in the earliest stage of embryonic development and are genetically programmed to evolve into one of many specialized
cell types, such as
skeletal muscle cells, nerve
cells, blood
cells, skin
cells, and liver
cells.
Expression of MyoD, a
skeletal muscle - specific transcriptional regulator, activated the expression of the Cdk inhibitor p21 during differentiation of murine myocytes and
in nonmyogenic
cells.
Infiltrating
cells in the myocardium and
skeletal muscle were positive for the T -
cell marker CD3 or the macrophage marker CD68.
A genetic approach
in the mouse has been used to examine how
skeletal muscle stem
cells are born, and how they acquire their identity.
Abstract We discovered that a subset of satellite
cells in skeletal muscle are self - renewing stem
cells that give rise to myogenic progenitors through asymmetric apical - basal
cell divisions.
Using mouse
skeletal muscle stem
cells as a model, we show that accumulating transcripts specifying the myogenic program are not translated
in quiescent satellite
cells, but are repressed by the action of microRNAs and RNA binding proteins.
p38 MAPK signaling underlies a
cell - autonomous loss of stem
cell self - renewal
in skeletal muscle of aged mice.
IGF prevents frailty by increasing
skeletal muscle mass (sarcopenia), sex drive (infertility), brain thymus (immunosenescence, centenarians maintain a strong immune system),
skeletal bone mineralization and marrow stem
cell formation (osteoporosis and immune system by bone marrow immune
cells working
in tandem with thymus and lymphs nodes), I understand that diabetes, an accelerated aging phenotype, is insulin IGF and blood glucose driven.
MyoD is normally only expressed
in skeletal muscle, and it was later found to be a transcription factor involved
in the differentiation of
muscle cells and also a very early marker of
muscle cell fate commitment.
A second line of research is to use
skeletal muscle formation
in the chick embryo as a model to understand how
cells within tissues display complex behaviours while being exposed to an ever - changing cellular environment.
(6) This is consistent with the deleterious effect of such
cells on tissue function, and with the researchers» conclusion that «the observed improvements
in skeletal muscle and fat of late - life treated 10 - month - old BubR1H / H; INK - ATTAC - 5 mice reflect attenuated progression of age - related declines rather than a reversal of ageing».
Roberts, E. W. and Deonarine, A. and Jones, J. O. and Denton, A. E. and Feig, C. and Lyons, S. K. and Espeli, M. and Kraman, M. and McKenna, B. and Wells, R. J. B. and Zhao, Q. and Caballero, O. L. and Larder, R. and Coll, A. P. and O'Rahilly, S. and Brindle, K. M. and Teichmann, S. A. and Tuveson, D. A. and Fearon, D. T. (2013) Depletion of stromal
cells expressing fibroblast activation protein - alpha from
skeletal muscle and bone marrow results
in cachexia and anemia.
In this study, Chazaud et al., evidenced that endothelial
cells (ECs) and myogenic progenitor
cells (MPCs) interacted to couple myogenesis and angiogenesis during
skeletal muscle regeneration.
Title: Numb Promotes an Increase
in Skeletal Muscle Progenitor
Cells in the Embryonic Somite Authors: Jory A, Le Roux I, Gayraud - Morel B, Rocheteau P, Cohen - Tannoudji M, Cumano A, Tajbakhsh S Date: 2009 Publication Details: Stem
Cells; Volume 27, Issue 11.
The candidate must have an experience working
in the biology and physiology of
skeletal muscle, with a reference to
in vitro / ex vivo
muscle cell contraction.
Human satellite
cell cultures display numerous features of mature
skeletal muscles (1) and have been used for studies of
muscle metabolism
in cultures established from patients with type 2 diabetes and healthy control subjects (1 — 5,8,9,21,22).
Another example is AMDC — autologous adult
skeletal muscle primary
cells that are expanded
in culture prior to injection and are tested for the treatment of ischemic heart failure.
In chick embryos, skeletal muscle formation is initiated by migrating Delta1 - expressing neural crest cells that trigger NOTCH signaling and myogenesis in selected epithelial somite progenitor cells, which rapidly translocate into the nascent muscle to differentiat
In chick embryos,
skeletal muscle formation is initiated by migrating Delta1 - expressing neural crest
cells that trigger NOTCH signaling and myogenesis
in selected epithelial somite progenitor cells, which rapidly translocate into the nascent muscle to differentiat
in selected epithelial somite progenitor
cells, which rapidly translocate into the nascent
muscle to differentiate.
Currently, back at the University of warsaw, she heads the Department of Cytology which investigates the potential of various stem
cells to differentiate into myoblasts and to participate
in the regeneration of
skeletal muscle.
The decline
in skeletal muscle function associated with human ageing can be ascribed to an increasing number of mutations
in satellite
cells — the resident stem
cells of
skeletal muscle.