adenosine regulating agents Acadesine is the prototype of a new class of compounds termed adenosine regulating agents. Acadesine is a purine nucleosid analogue that enters the myocyte and is immediately phosphorylated to ZMP (AICA ribotide), which is further metabolised to Inosine mono-phosphate (an intermediate in the synthesis ofadenosine triphosphate (ATP) and guanosine triphos-phate).
Claims that acadesine may serve as a substrate for ATP synthesis and result in repletion of myocardial ATP were supported by some studies and refuted by others. Because acadesine may be a precursor in the synthesis of myocardial ATP it was proposed as a possible agent of myocardial protection during ischaemia, particularly because myocardial ATP depletion has been linked to cell death.
Description AICAR (2627-69-2) activates AMP-activated protein kinase (AMPK). Promotes ligand-independent activation of the insulin receptor.1 Promotes skeletal muscle autophagy via activation of FoxO3a.2 Controls smooth muscle cell hyperproliferation in vascular disease.3 ?Induces osteogenic differentiation in mesenchymal stem cells.4 Inhibits proinflammatory response in glial cells.5 Cell permeable.
Chemical Properties Solid
Use
Uses glucose uptake stimulant; AMPK activator
Uses AICAR is a nucleoside analogue that is able to enter nucleoside pools and is able to significantly increase levels of adenosine during periods of ATP breakdown. Adenosine-regulating agents (ARAs) hav e been recognized for therapeutic potential in myocardial ischemia. Cardioprotective.AICAR peptide.
Uses 5-Aminoimidazole-4-carboxamide 1-beta-D-ribofuranoside is used as a cell permeable activator of AMP-activated protein kinase (AMPK), a metabolic master regulator that is activated in times of reduced energy availability (high cellular AMP:ATP ratios) and serves to inhibit anabolic processes. In vivo, pharmacologic activation of AMPK with AICAR mimics exercise and triggers insulin-independent glucose uptake by skeletal muscle.
Definition ChEBI: A 1-ribosylimidazolecarboxamide in which the carboxamide group is situated at position 4 of the imidazole ring, which is further substituted at position 5 by an amino group. A purine nucleoside analogue and activator of AMP-activated protein kinase, it is is used for the treatment of acute lymphoblastic leukemia and is reported to have cardioprotective effects.AICAR for sale.
Therapeutic Function Cardiotonic, Platelet aggregation inhibitor
Biological Functions The first direct AMPK activator, 5-aminoimidazole-4-carboxamide riboside (AICAR), is an adenosine analog taken up into cells by adenosine transporters and phosphorylated by adenosine kinase, thus generating the AMP-mimetic, AICAR monophosphate (ZMP). Similarly to cellular AMP, ZMP binds to site 3 on the AMPKγ subunit. Although ZMP is a much less potent AMPK activator than AMP in cell-free systems, AICAR directly activates AMPK in most cells because ZMP can accumulate to millimolar concentrations in cells. AICAR is able to activate many other AMP-dependent enzymes, such as fructose-1,6-bisphosphatase.
General Description
Adenosine monophosphate?protein kinase (AMPK) activator 5-aminoimidazole-4-carboxamide?ribonucleotide?(AICAR)?modulates cellular energy. It regulates lipid and glucose metabolism, pro-inflammatory responses,?cytokine production,?cell proliferation and apoptosis. AICAR improves ischemia or reperfusion injury and kidney fibrosis in rats. It provides protection against acute tubular necrosis.
Biological Activity Cell-permeable, allosteric activator of AMP-activated protein kinase (AMPK). Augments proliferation, differentiation and mineralization of osteoblastic MC3T3-EI cells and attenuates psychosine-induced expression of proinflammatory cytokines and iNOS in astrocytes.
Biochem/physiol Actions AICAR is a cell permeable activator of AMP-activated protein kinase (AMPK), a metabolic master regulator that is activated in times of reduced energy availability (high cellular AMP:ATP ratios) and serves to inhibit anabolic processes. In vivo, pharmacologic activation of AMPK with AICAR mimics exercise and triggers insulin-independent glucose uptake by skeletal muscle.
storage -20°C
Clinical
claims and research AICAR has proved in vivo anti-tumor effects in xenograft models. It is currently under clinical trial phase I/II to treat patients with chronic lymphocytic leukemia and has shown good safety and tolerability properties, although some side effects have been reported.
AICAR Chemical Properties
Melting point 214-215 °C
Boiling point 726.3±60.0 °C(Predicted)
density 2.06±0.1 g/cm3(Predicted)
storage temp. -20°C
solubility H2O: >10 mg/mL
form powder
pka 13.27±0.70(Predicted)
color tan
Water Solubility Soluble in DMSO at 2mg/ml. Soluble in water or ethanol at less than 1mg/ml
λmax 265nm(NaOH)(lit.)
Merck 14,16
Stability: Stable for 2 years from date of purchase as supplied. Solutions in DMSO or distilled water may be stored at -20°C for up to 3 months.
InChIKey RTRQQBHATOEIAF-UUOKFMHZSA-N
CAS DataBase Reference 2627-69-2(CAS DataBase Reference)
EPA Substance Registry System 1H-Imidazole-4-carboxamide, 5-amino-1-.beta.-D-ribofuranosyl- (2627-69-2)
