TY - JOUR
T1 - Dickkopf-1 Overexpression in vitro Nominates Candidate Blood Biomarkers Relating to Alzheimer's Disease Pathology
AU - Shi, Liu
AU - Winchester, Laura M.
AU - Liu, Benjamine Y.
AU - Killick, Richard
AU - Ribe, Elena M.
AU - Westwood, Sarah
AU - Baird, Alison L.
AU - Buckley, Noel J.
AU - Hong, Shengjun
AU - Dobricic, Valerija
AU - Kilpert, Fabian
AU - Franke, Andre
AU - Kiddle, Steven
AU - Sattlecker, Martina
AU - Dobson, Richard
AU - Cuadrado, Antonio
AU - Hye, Abdul
AU - Ashton, Nicholas J.
AU - Morgan, Angharad R.
AU - Bos, Isabelle
AU - Vos, Stephanie J.B.
AU - Ten Kate, Mara
AU - Scheltens, Philip
AU - Vandenberghe, Rik
AU - Gabel, Silvy
AU - Meersmans, Karen
AU - Engelborghs, Sebastiaan
AU - De Roeck, Ellen E.
AU - Sleegers, Kristel
AU - Frisoni, Giovanni B.
AU - Blin, Olivier
AU - Richardson, Jill C.
AU - Bordet, Régis
AU - Molinuevo, José L.
AU - Rami, Lorena
AU - Wallin, Anders
AU - Kettunen, Petronella
AU - Tsolaki, Magda
AU - Verhey, Frans
AU - Lleó, Alberto
AU - Alcolea, Daniel
AU - Popp, Julius
AU - Peyratout, Gwendoline
AU - Martinez-Lage, Pablo
AU - Tainta, Mikel
AU - Johannsen, Peter
AU - Teunissen, Charlotte E.
AU - Freund-Levi, Yvonne
AU - Frölich, Lutz
AU - Legido-Quigley, Cristina
AU - Barkhof, Frederik
AU - Blennow, Kaj
AU - Rasmussen, Katrine Laura
AU - Nordestgaard, Børge Grønne
AU - Frikke-Schmidt, Ruth
AU - Nielsen, Sune Fallgaard
AU - Soininen, Hilkka
AU - Vellas, Bruno
AU - Kloszewska, Iwona
AU - Mecocci, Patrizia
AU - Zetterberg, Henrik
AU - Morgan, B. Paul
AU - Streffer, Johannes
AU - Visser, Pieter Jelle
AU - Bertram, Lars
AU - Nevado-Holgado, Alejo J.
AU - Lovestone, Simon
PY - 2020
Y1 - 2020
N2 - Background: Previous studies suggest that Dickkopf-1 (DKK1), an inhibitor of Wnt signaling, plays a role in amyloid-induced toxicity and hence Alzheimer's disease (AD). However, the effect of DKK1 expression on protein expression, and whether such proteins are altered in disease, is unknown. Objective: We aim to test whether DKK1 induced protein signature obtained in vitro were associated with markers of AD pathology as used in the amyloid/tau/neurodegeneration (ATN) framework as well as with clinical outcomes. Methods: We first overexpressed DKK1 in HEK293A cells and quantified 1,128 proteins in cell lysates using aptamer capture arrays (SomaScan) to obtain a protein signature induced by DKK1. We then used the same assay to measure the DKK1-signature proteins in human plasma in two large cohorts, EMIF (n = 785) and ANM (n = 677). Results: We identified a 100-protein signature induced by DKK1 in vitro. Subsets of proteins, along with age and apolipoprotein E ϵ4 genotype distinguished amyloid pathology (A + T-N-, A+T+N-, A+T-N+, and A+T+N+) from no AD pathology (A-T-N-) with an area under the curve of 0.72, 0.81, 0.88, and 0.85, respectively. Furthermore, we found that some signature proteins (e.g., Complement C3 and albumin) were associated with cognitive score and AD diagnosis in both cohorts. Conclusions: Our results add further evidence for a role of DKK regulation of Wnt signaling in AD and suggest that DKK1 induced signature proteins obtained in vitro could reflect theATNframework as well as predict disease severity and progression in vivo.
AB - Background: Previous studies suggest that Dickkopf-1 (DKK1), an inhibitor of Wnt signaling, plays a role in amyloid-induced toxicity and hence Alzheimer's disease (AD). However, the effect of DKK1 expression on protein expression, and whether such proteins are altered in disease, is unknown. Objective: We aim to test whether DKK1 induced protein signature obtained in vitro were associated with markers of AD pathology as used in the amyloid/tau/neurodegeneration (ATN) framework as well as with clinical outcomes. Methods: We first overexpressed DKK1 in HEK293A cells and quantified 1,128 proteins in cell lysates using aptamer capture arrays (SomaScan) to obtain a protein signature induced by DKK1. We then used the same assay to measure the DKK1-signature proteins in human plasma in two large cohorts, EMIF (n = 785) and ANM (n = 677). Results: We identified a 100-protein signature induced by DKK1 in vitro. Subsets of proteins, along with age and apolipoprotein E ϵ4 genotype distinguished amyloid pathology (A + T-N-, A+T+N-, A+T-N+, and A+T+N+) from no AD pathology (A-T-N-) with an area under the curve of 0.72, 0.81, 0.88, and 0.85, respectively. Furthermore, we found that some signature proteins (e.g., Complement C3 and albumin) were associated with cognitive score and AD diagnosis in both cohorts. Conclusions: Our results add further evidence for a role of DKK regulation of Wnt signaling in AD and suggest that DKK1 induced signature proteins obtained in vitro could reflect theATNframework as well as predict disease severity and progression in vivo.
KW - ATN framework
KW - Dickkopf-1
KW - replication
KW - SomaScan
KW - Wnt signaling
UR - http://www.scopus.com/inward/record.url?scp=85092562697&partnerID=8YFLogxK
U2 - 10.3233/JAD-200208
DO - 10.3233/JAD-200208
M3 - Article
C2 - 32831200
AN - SCOPUS:85092562697
SN - 1387-2877
VL - 77
SP - 1353
EP - 1368
JO - Journal of Alzheimer's Disease
JF - Journal of Alzheimer's Disease
IS - 3
ER -