Heregulin beta-2, Recombinant, Human (NRG1, Pro-neuregulin-1, Membrane-bound Isoform, Pro-NRG1, Neuregulin-1, Acetylcholine Receptor-inducing Activity, ARIA, Breast Cancer Cell Differentiation Factor p45, Glial Growth Factor, Heregulin, HRG, Neu Different

Neuregulin is a signaling protein for ErbB2/ErbB4 receptor heterodimers on the cardiac muscle cells, playing an important role in heart structure and function through inducing ErbB2/ErbB4 receptor phosphorylation and cardiomyocyte differentiation. Research on molecular level discovered that neuregulin recombinant could make disturbed myocardial cell structure into order and strengthen the connection between myocardial cells by intercalated discs re-organization. Pharmacodynamic experiments in animals showed that neuregulin (NRG1) recombinant can reduce the degree of damage on myocardial cells caused by ischemia, hypoxia and viral infection.\n\nSource: \nRecombinant corresponding to human Heregulin-B2, expressed in E.coli.\n\nMolecular Weight:\n~7kD\n\nBiological Activity:\nThe ED50, calculated by the dose-dependant stimulation of human MCF-7 cells is <0.5ng/ml, corresponding to a specific activity of >2x10e6units/mg.\n\nStorage and Stability:\nLyophilized powder may be stored at -20 degrees C. Stable for 12 months at -20 degrees C. Reconstitute with sterile buffer or dH2O. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Reconstituted product is stable for 6 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

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SPECIFICATIONS

Catalog Number

136907

Size

10ug

Form

Supplied as a lyophilized powder from 20mM PB, pH 7.0, 0.5%HSA, 2% mannitol. Reconstitute with sterile 18Mo-cm H2O to 100ug/ml.

Purity

~95% (RP-HPLC and SDS-PAGE)

References

1. Neuregulin-1 enhances depolarization-induced GABA release. Neuron 2007 May 24;54(4):599-610. 2. The neuregulin-1 receptor erbB4 controls glutamatergic synapse maturation and plasticity. Neuron 2007 May 24;54(4):583-97. 3. Immunohistochemical evidence for impaired neuregulin-1 signaling in the prefrontal cortex in schizophrenia and in unipolar depression. Ann N Y Acad Sci 2007 Jan;1096:147-56. 4. An acute effect of neuregulin 1 beta to suppress alpha 7-containing nicotinic acetylcholine receptors in hippocampal interneurons. J Neurosci 2006 Nov 1;26(44):11295-303. 5. Neuregulin 1 (8p12) and childhood-onset schizophrenia: susceptibility haplotypes for diagnosis and brain developmental trajectories. Mol Psychiatry 2007 Feb;12(2):195-205. 6. Neuregulin-1/erbB-activation improves cardiac function and survival in models of ischemic, dilated, and viral cardiomyopathy. J Am Coll Cardiol 2006 Oct 3;48(7):1438-47.