Biomaterial Database

Anabolic and catabolic pathways regulating skeletal muscle mass. 2010

John J McCarthy, and Karyn A Esser

Center for Muscle Biology, Department of Physiology, College of Medicine, University of Kentucky, Lexington, Kentucky, USA.

OBJECTIVE The purpose of this review is to discuss recent findings as they pertain to anabolic and catabolic-signaling pathways involved in the regulation of adult skeletal muscle mass. RESULTS Research conducted over the past few years has continued to refine our understanding of the pathways that govern skeletal muscle mass, in particular the mTOR, FoxO and NF-kappaB pathways. Alternative signaling pathways have also emerged as important regulators of muscle mass such as the beta-catenin pathway. CONCLUSIONS A better understanding of the anabolic and catabolic processes which regulate skeletal muscle mass is critical for the development of more effective therapeutics to prevent the loss of muscle with disuse, aging and disease.

UI	MeSH Term	Description	Entries
D009929	Organ Size	The measurement of an organ in volume, mass, or heaviness.	Organ Volume,Organ Weight,Size, Organ,Weight, Organ
D000071161	Forkhead Box Protein O1	A forkhead box transcription factor that is a major target of INSULIN signaling and regulator of metabolic homeostasis in response to OXIDATIVE STRESS. It binds to the insulin RESPONSE ELEMENT (IRE) and the related Daf-16 family binding element (DBE). Its activity is suppressed by insulin and it also regulates OSTEOBLAST proliferation, controls bone mass, and skeletal regulation of GLUCOSE metabolism. It promotes GLUCONEOGENESIS in HEPATOCYTES and regulates gene expression in ADIPOSE TISSUE. It is also an important CELL DEATH regulator. Chromosomal aberrations involving the FOXO1 gene occur in RHABDOMYOSARCOMA.	FOXO1 Protein,Forkhead in Rhabdomyosarcoma Protein
D015398	Signal Transduction	The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway.	Cell Signaling,Receptor-Mediated Signal Transduction,Signal Pathways,Receptor Mediated Signal Transduction,Signal Transduction Pathways,Signal Transduction Systems,Pathway, Signal,Pathway, Signal Transduction,Pathways, Signal,Pathways, Signal Transduction,Receptor-Mediated Signal Transductions,Signal Pathway,Signal Transduction Pathway,Signal Transduction System,Signal Transduction, Receptor-Mediated,Signal Transductions,Signal Transductions, Receptor-Mediated,System, Signal Transduction,Systems, Signal Transduction,Transduction, Signal,Transductions, Signal
D016328	NF-kappa B	Ubiquitous, inducible, nuclear transcriptional activator that binds to enhancer elements in many different cell types and is activated by pathogenic stimuli. The NF-kappa B complex is a heterodimer composed of two DNA-binding subunits: NF-kappa B1 and relA.	Immunoglobulin Enhancer-Binding Protein,NF-kappa B Complex,Nuclear Factor kappa B,Transcription Factor NF-kB,kappa B Enhancer Binding Protein,Ig-EBP-1,NF-kB,NF-kappaB,Nuclear Factor-Kappab,Complex, NF-kappa B,Enhancer-Binding Protein, Immunoglobulin,Factor NF-kB, Transcription,Factor-Kappab, Nuclear,Ig EBP 1,Immunoglobulin Enhancer Binding Protein,NF kB,NF kappa B Complex,NF kappaB,NF-kB, Transcription Factor,Nuclear Factor Kappab,Transcription Factor NF kB
D017346	Protein Serine-Threonine Kinases	A group of enzymes that catalyzes the phosphorylation of serine or threonine residues in proteins, with ATP or other nucleotides as phosphate donors.	Protein-Serine-Threonine Kinases,Serine-Threonine Protein Kinase,Serine-Threonine Protein Kinases,Protein-Serine Kinase,Protein-Serine-Threonine Kinase,Protein-Threonine Kinase,Serine Kinase,Serine-Threonine Kinase,Serine-Threonine Kinases,Threonine Kinase,Kinase, Protein-Serine,Kinase, Protein-Serine-Threonine,Kinase, Protein-Threonine,Kinase, Serine-Threonine,Kinases, Protein Serine-Threonine,Kinases, Protein-Serine-Threonine,Kinases, Serine-Threonine,Protein Kinase, Serine-Threonine,Protein Kinases, Serine-Threonine,Protein Serine Kinase,Protein Serine Threonine Kinase,Protein Serine Threonine Kinases,Protein Threonine Kinase,Serine Threonine Kinase,Serine Threonine Kinases,Serine Threonine Protein Kinase,Serine Threonine Protein Kinases
D047908	Intracellular Signaling Peptides and Proteins	Proteins and peptides that are involved in SIGNAL TRANSDUCTION within the cell. Included here are peptides and proteins that regulate the activity of TRANSCRIPTION FACTORS and cellular processes in response to signals from CELL SURFACE RECEPTORS. Intracellular signaling peptide and proteins may be part of an enzymatic signaling cascade or act through binding to and modifying the action of other signaling factors.	Intracellular Signaling Peptides,Intracellular Signaling Proteins,Peptides, Intracellular Signaling,Proteins, Intracellular Signaling,Signaling Peptides, Intracellular,Signaling Proteins, Intracellular
D051176	beta Catenin	A multi-functional catenin that participates in CELL ADHESION and nuclear signaling. Beta catenin binds CADHERINS and helps link their cytoplasmic tails to the ACTIN in the CYTOSKELETON via ALPHA CATENIN. It also serves as a transcriptional co-activator and downstream component of WNT PROTEIN-mediated SIGNAL TRANSDUCTION PATHWAYS.	beta-Catenin,Catenin, beta
D051858	Forkhead Transcription Factors	A subclass of winged helix DNA-binding proteins that share homology with their founding member fork head protein, Drosophila.	Forkhead Box Protein,Forkhead Box Transcription Factor,Forkhead Protein,Forkhead Transcription Factor,Forkhead Box Proteins,Forkhead Box Transcription Factors,Forkhead Proteins,Fox Transcription Factors,Box Protein, Forkhead,Box Proteins, Forkhead,Factor, Forkhead Transcription,Protein, Forkhead,Protein, Forkhead Box,Proteins, Forkhead Box,Transcription Factor, Forkhead,Transcription Factors, Forkhead,Transcription Factors, Fox
D058570	TOR Serine-Threonine Kinases	A serine threonine kinase that controls a wide range of growth-related cellular processes. The protein is referred to as the target of RAPAMYCIN due to the discovery that SIROLIMUS (commonly known as rapamycin) forms an inhibitory complex with TACROLIMUS BINDING PROTEIN 1A that blocks the action of its enzymatic activity.	TOR Kinase,TOR Kinases,TOR Serine-Threonine Kinase,Target of Rapamycin Protein,mTOR Serine-Threonine Kinase,mTOR Serine-Threonine Kinases,FK506 Binding Protein 12-Rapamycin Associated Protein 1,FKBP12-Rapamycin Associated Protein,FKBP12-Rapamycin Complex-Associated Protein,Mammalian Target of Rapamycin,Mechanistic Target of Rapamycin Protein,RAFT-1 Protein,Rapamycin Target Protein,Target of Rapamycin Proteins,mTOR Protein,FK506 Binding Protein 12 Rapamycin Associated Protein 1,FKBP12 Rapamycin Associated Protein,FKBP12 Rapamycin Complex Associated Protein,Kinase, TOR,Kinase, TOR Serine-Threonine,Kinase, mTOR Serine-Threonine,Kinases, TOR Serine-Threonine,Kinases, mTOR Serine-Threonine,Protein Target, Rapamycin,Protein, RAFT-1,Protein, mTOR,RAFT 1 Protein,Rapamycin Protein Target,Serine-Threonine Kinase, TOR,Serine-Threonine Kinase, mTOR,Serine-Threonine Kinases, TOR,Serine-Threonine Kinases, mTOR,TOR Serine Threonine Kinase,TOR Serine Threonine Kinases,mTOR Serine Threonine Kinase,mTOR Serine Threonine Kinases
D018482	Muscle, Skeletal	A subtype of striated muscle, attached by TENDONS to the SKELETON. Skeletal muscles are innervated and their movement can be consciously controlled. They are also called voluntary muscles.	Anterior Tibial Muscle,Gastrocnemius Muscle,Muscle, Voluntary,Plantaris Muscle,Skeletal Muscle,Soleus Muscle,Muscle, Anterior Tibial,Muscle, Gastrocnemius,Muscle, Plantaris,Muscle, Soleus,Muscles, Skeletal,Muscles, Voluntary,Skeletal Muscles,Tibial Muscle, Anterior,Voluntary Muscle,Voluntary Muscles