27.3
#P01138
4803
Background
β-NGF is the prototypical member of the neurotrophin family of growth factors (1). β-NGF is involved in neuronal survival, differentiation, and growth (1,2). Outside of the nervous system, NGF is produced by a variety of immune cells, including B cells, T cells, monocytes, and mast cells (3,4). β-NGF binds to and signals through two distinct receptors, TrkA and p75NTR (1,2). Cellular responses induced by NGF are modulated by receptor expression. For example, TrkA leads to the inhibition of apoptosis and neuronal differentiation. In contrast, signaling through p75NTR in the absence of TrkA induces cell death. (1,2). NGF signaling via TrkA is characterized by activation of the PI3K/Akt and PLCγ pathways (1,2). NGF signaling via p75NTR induces JNK and NFκB activation (1,2). Aberrant NGF signaling may be linked to the onset of Alzheimer’s disease (5,6).
- Bibel, M. and Barde, Y.A. (2000) Genes Dev 14, 2919-37.
- Huang, E.J. and Reichardt, L.F. (2003) Annu Rev Biochem 72, 609-42.
- Frossard, N. et al. (2004) Eur J Pharmacol 500, 453-65.
- Jiang, Y. et al. (2007) J Immunol 179, 6297-304.
- Matrone, C. et al. (2009) Proc Natl Acad Sci U S A 106, 11358-63.
- Matrone, C. et al. (2008) Proc Natl Acad Sci U S A 105, 13139-44.
Endotoxin
Endotoxin levels are less than or equal to 1 EU / 1 μg hβ-NGF.
Purity
A greater than or equal to 95% purity was determined by SDS-PAGE.
Source / Purification
Recombinant human β-NGF was expressed in E. coli and is supplied in a lyophilized form.
Bioactivity
The bioactivity of recombinant hβ-NGF was determined in a TF-1 cell proliferation assay. The ED50 of each lot is less than or equal to 5 ng/mL.
Background
β-NGF is the prototypical member of the neurotrophin family of growth factors (1). β-NGF is involved in neuronal survival, differentiation, and growth (1,2). Outside of the nervous system, NGF is produced by a variety of immune cells, including B cells, T cells, monocytes, and mast cells (3,4). β-NGF binds to and signals through two distinct receptors, TrkA and p75NTR (1,2). Cellular responses induced by NGF are modulated by receptor expression. For example, TrkA leads to the inhibition of apoptosis and neuronal differentiation. In contrast, signaling through p75NTR in the absence of TrkA induces cell death. (1,2). NGF signaling via TrkA is characterized by activation of the PI3K/Akt and PLCγ pathways (1,2). NGF signaling via p75NTR induces JNK and NFκB activation (1,2). Aberrant NGF signaling may be linked to the onset of Alzheimer’s disease (5,6).
Background References
Cross-Reactivity Key
H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected
Trademarks and Patents
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