RIIGL - Inhibitor Peptide of amyloid-ß
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RIIGL is one of several inhibitors of amyloid-beta aggregation that have been published. Many of them are fragments and modified peptides derived from the native amyloid-beta sequence. Others were identified by phage display approaches. An overview about peptides that target amyloid-beta is described by Stains et al. (2007) ChemMedChem 2, 1674-1692.
Characteristic of Alzheimer disease is the accumulation of amyloid plaques (amyloid-beta) in the brain. The major components of these plaques are 36-42 residue-long amyloid-beta-peptides, which form insoluble fibrils via self-assembly.
The amyloid-beta-peptides are fragments of the broadly distributed, membrane-bound amyloid precursor protein APP, encoded on chromosome 21. They are formed from the proteolytic cleavage of APP by ß- and γ-secretases.
One of the most common and intensively studied amyloid ß isoforms is amyloid ß1-40), which is present in amyloid plaques.
M. Ahmed, J. Davis, D. Aucoin, T. Sato, S. Ahuja, S. Aimoto, J. I. Elliott, W. E. Van Nostrand, S. O. Smith (2010) Nat. Struct. Mol. Biol. 17, 561-567.
T. Hartmann, S. C. Bieger, B. Brühl, P. J. Tienari, N. Ida, D. Allsop, G. W. Roberts, C. L. Masters, C. G. Dotti, K. Unsicker, K. Beyreuther (1997) Nat. Med. 3, 1016-1020.
Amyloid-ß-peptides and innate immunity
In Alzheimer’s disease, deposition of amyloid-beta triggers a protracted sterile inflammatory response. Chronic stimulation of the innate immune system is believed to underlie the pathology of this disease. It was shown, that amyloid-beta triggers inflammatory signalling through a heterodimer of Toll-like receptors 4 and 6. Assembly of this recently identified heterodimer is regulated by signals from the scavenger receptor CD36, CD36-TLR4-TLR6 activation was identified as a common molecular mechanism by which atherogenic lipids and amyloid-beta stimulate sterile inflammation (Stewart et al. 2010, Nature Immunology 11, 155-161 doi:10.1038/ni.1836).
P2255 - Amyloid-beta (16-20) - KLVFF >
P2304 - Amyloid-beta (10-20) - YEVHHQKLVFF >
P2249 - Amyloid-beta (1-40) human - DAEFRHDSGYEVHHQKLVFFAEDVGSNKGAIIGLMVGGVV >
P2250 - Amyloid-beta (1-40) human - DAEFRHDSGYEVHHQKLVFFAEDVGSNKGAIIGLMVGGVV - HCl salt peptide >
P2247 - Amyloid-beta (1-40) rat - DAEFGHDSGFEVRHQKLVFFAEDVGSNKGAIIGLMVGGVV >
P2248 - Amyloid-beta (1-40) rat - DAEFGHDSGFEVRHQKLVFFAEDVGSNKGAIIGLMVGGVV - HCl salt peptide >
P2303 - Amyloid-beta (1-42) human - DAEFRHDSGYEVHHQKLVFFAEDVGSNKGAIIGLMVGGVVIA >
Purity: >70% / >95% (HPLC)
Appearance: lyophilized, white powder
application:study of Alzheimer desease Fibrilization, fibrillogenesis studies
Sicherheits Hinweise / Safety
Klassifizierungen / Classificationeclass-Nr: 34-16-04-90
Dokumente - Protokolle - Downloads
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