Imatinib treatment and Aβ42 in humans. (12th December 2013)

• Record Type: Journal Article
• Authors: Olsson, Bob; Legros, Laurence; Guilhot, François; Strömberg, Kia; Smith, James; Livesey, Frederick J.; Wilson, David H.; Zetterberg, Henrik; Blennow, Kaj
• Is Part Of: Alzheimer's & dementia. Volume 10(2014)Supplement 5
• Page Start: S374
• Page End: S380
• Publication Date: 2013-12-12
• Subjects: Aβ42 -- Imatinib -- Plasma -- CML -- Alzheimer's disease; Alzheimer's disease -- Periodicals; Alzheimer Disease -- Periodicals; Dementia -- Periodicals; Démence; Maladie d'Alzheimer; Périodique électronique (Descripteur de forme); Ressource Internet (Descripteur de forme); 616.83
• DOI: 10.1016/j.jalz.2013.08.283
• Languages: English
• ISSNs: 1552-5260

Abstract

Abstract: Background: The first‐line treatment in chronic myeloid leukemia (CML), imatinib, has been shown to decrease the production of amyloid‐β (Aβ) in vitro and in animal studies. However, whether imatinib has this effect in humans is not known. Methods: Plasma levels of Aβ42 were analyzed in sequential samples from CML patients treated with imatinib ( n = 51). The effect of imatinib on Aβ production was also investigated in human embryonic kidney 293 (HEK293) cells overexpressing the amyloid precursor protein (APP) with the Swedish mutation, in mouse primary cortical neurons and in human Down syndrome embryonic stem‐cell‐derived cortical neurons. Results: Twelve months of imatinib treatment did not lower plasma Aβ42 levels in CML patients, and imatinib treatment did not lead to less Aβ42 production in any of the in vitro models whereas β‐ and γ‐secretase inhibitors did. Conclusion: These data question the previously described role of imatinib in inhibiting amyloidogenic APP processing and as a drug candidate for AD.