Prion protein expression alters APP cleavage without interaction with BACE-1

Patrick C. McHugh, Josephine A. Wright, Robert J. Williams, David R. Brown

Research output: Contribution to journalArticle

  • 5 Citations

Abstract

The prion protein (PrP) and the beta-site amyloid precursor protein (APP) cleaving enzyme 1 (BACE-1) are both copper binding proteins, but are associated with two separate neurodegenerative diseases. The role of BACE-1 in the formation of beta-amyloid has made it a major target in attempts to reduce the formation of beta-amyloid in Alzheimer's diseases. However, the suggestion that PrP, normally associated with prion diseases, binds to BACE-1 and reduces its activity has led to the suggestion that the study of this interaction could be of considerable importance to Alzheimer's disease. We therefore undertook to investigate the possible interaction of these two proteins physically and at the level of transcription, translation and APP cleavage. Our findings suggest that mature PrP and BACE-1 do not physically interact, but that altered PrP expression results in altered BACE-1 protein expression and promoter activity. Additionally, overexpression of PrP results in increased cleavage of APP in contrast to previous datas suggesting a reduction. Our findings suggest that any relation between PrP and BACE-1 is indirect. Altered expression of PrP causes changes in the expression of many other proteins which may be as a result of altered copper metabolism.
LanguageEnglish
Pages672-680
JournalNeurochemistry International
Volume61
Issue number5
DOIs
StatusPublished - Oct 2012

Fingerprint

Amyloid beta-Protein Precursor
Amyloid
Alzheimer Disease
Proteins
Prion Diseases
Prion Proteins
Neurodegenerative Diseases
Copper
Enzymes

Cite this

Prion protein expression alters APP cleavage without interaction with BACE-1. / McHugh, Patrick C.; Wright, Josephine A.; Williams, Robert J.; Brown, David R.

In: Neurochemistry International, Vol. 61, No. 5, 10.2012, p. 672-680.

Research output: Contribution to journalArticle

@article{5b5caef52d404ba28839db346cb380f4,
title = "Prion protein expression alters APP cleavage without interaction with BACE-1",
abstract = "The prion protein (PrP) and the beta-site amyloid precursor protein (APP) cleaving enzyme 1 (BACE-1) are both copper binding proteins, but are associated with two separate neurodegenerative diseases. The role of BACE-1 in the formation of beta-amyloid has made it a major target in attempts to reduce the formation of beta-amyloid in Alzheimer's diseases. However, the suggestion that PrP, normally associated with prion diseases, binds to BACE-1 and reduces its activity has led to the suggestion that the study of this interaction could be of considerable importance to Alzheimer's disease. We therefore undertook to investigate the possible interaction of these two proteins physically and at the level of transcription, translation and APP cleavage. Our findings suggest that mature PrP and BACE-1 do not physically interact, but that altered PrP expression results in altered BACE-1 protein expression and promoter activity. Additionally, overexpression of PrP results in increased cleavage of APP in contrast to previous datas suggesting a reduction. Our findings suggest that any relation between PrP and BACE-1 is indirect. Altered expression of PrP causes changes in the expression of many other proteins which may be as a result of altered copper metabolism.",
author = "McHugh, {Patrick C.} and Wright, {Josephine A.} and Williams, {Robert J.} and Brown, {David R.}",
year = "2012",
month = "10",
doi = "10.1016/j.neuint.2012.07.002",
language = "English",
volume = "61",
pages = "672--680",
journal = "Neurochemistry International",
issn = "0197-0186",
publisher = "Elsevier",
number = "5",

}

TY - JOUR

T1 - Prion protein expression alters APP cleavage without interaction with BACE-1

AU - McHugh,Patrick C.

AU - Wright,Josephine A.

AU - Williams,Robert J.

AU - Brown,David R.

PY - 2012/10

Y1 - 2012/10

N2 - The prion protein (PrP) and the beta-site amyloid precursor protein (APP) cleaving enzyme 1 (BACE-1) are both copper binding proteins, but are associated with two separate neurodegenerative diseases. The role of BACE-1 in the formation of beta-amyloid has made it a major target in attempts to reduce the formation of beta-amyloid in Alzheimer's diseases. However, the suggestion that PrP, normally associated with prion diseases, binds to BACE-1 and reduces its activity has led to the suggestion that the study of this interaction could be of considerable importance to Alzheimer's disease. We therefore undertook to investigate the possible interaction of these two proteins physically and at the level of transcription, translation and APP cleavage. Our findings suggest that mature PrP and BACE-1 do not physically interact, but that altered PrP expression results in altered BACE-1 protein expression and promoter activity. Additionally, overexpression of PrP results in increased cleavage of APP in contrast to previous datas suggesting a reduction. Our findings suggest that any relation between PrP and BACE-1 is indirect. Altered expression of PrP causes changes in the expression of many other proteins which may be as a result of altered copper metabolism.

AB - The prion protein (PrP) and the beta-site amyloid precursor protein (APP) cleaving enzyme 1 (BACE-1) are both copper binding proteins, but are associated with two separate neurodegenerative diseases. The role of BACE-1 in the formation of beta-amyloid has made it a major target in attempts to reduce the formation of beta-amyloid in Alzheimer's diseases. However, the suggestion that PrP, normally associated with prion diseases, binds to BACE-1 and reduces its activity has led to the suggestion that the study of this interaction could be of considerable importance to Alzheimer's disease. We therefore undertook to investigate the possible interaction of these two proteins physically and at the level of transcription, translation and APP cleavage. Our findings suggest that mature PrP and BACE-1 do not physically interact, but that altered PrP expression results in altered BACE-1 protein expression and promoter activity. Additionally, overexpression of PrP results in increased cleavage of APP in contrast to previous datas suggesting a reduction. Our findings suggest that any relation between PrP and BACE-1 is indirect. Altered expression of PrP causes changes in the expression of many other proteins which may be as a result of altered copper metabolism.

UR - http://www.scopus.com/inward/record.url?scp=84866504497&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1016/j.neuint.2012.07.002

U2 - 10.1016/j.neuint.2012.07.002

DO - 10.1016/j.neuint.2012.07.002

M3 - Article

VL - 61

SP - 672

EP - 680

JO - Neurochemistry International

T2 - Neurochemistry International

JF - Neurochemistry International

SN - 0197-0186

IS - 5

ER -