Begacestat (GSI-953): A Novel, Selective Thiophene Sulfonamide Inhibitor of Amyloid Precursor Protein γ-Secretase for the Treatment of Alzheimer's Disease

被引：139

作者：

Martone, Robert L. ^{[1
]}

Zhou, Hua ^{[1
]}

Atchison, Kevin ^{[1
,3
]}

Comery, Thomas ^{[1
]}

Xu, Jane Z. ^{[1
]}

Huang, Xinyi ^{[2
]}

Gong, Xioahai ^{[1
]}

Jin, Mei ^{[1
]}

Kreft, Anthony ^{[2
]}

Harrison, Boyd ^{[2
]}

Mayer, Scott C. ^{[2
]}

Aschmies, Suzan ^{[1
]}

Gonzales, Cathleen ^{[1
]}

Zaleska, Margaret M. ^{[1
]}

Riddell, David R. ^{[1
]}

Wagner, Erik ^{[1
]}

Lu, Peimin ^{[1
]}

Sun, Shaiu-Ching ^{[1
]}

Sonnenberg-Reines, June ^{[1
]}

Oganesian, Aram ^{[5
]}

Adkins, Karissa

Leach, Michael W. ^{[3
]}

Clarke, David W. ^{[4
]}

Huryn, Donna ^{[2
]}

Abou-Gharbia, Magid ^{[2
]}

Magolda, Ronald ^{[2
]}

Bard, Jonathan ^{[1
]}

Frick, Glen ^{[6
]}

Raje, Sangeeta ^{[6
]}

Forlow, S. Bradley ^{[7
]}

Balliet, Carrie ^{[7
]}

Burczynski, Michael E. ^{[7
]}

Reinhart, Peter H. ^{[1
]}

Wan, Hong I. ^{[7
]}

Pangalos, Menelas N. ^{[1
]}

Jacobsen, J. Steven ^{[1
]}

机构：

[1] Wyeth Ayerst Res, Dept Discovery Neurosci, Princeton, NJ 08543 USA

[2] Wyeth Ayerst Res, Dept Chem Screening Sci, Princeton, NJ 08543 USA

[3] Wyeth Ayerst Res, Dept Exploratory Drug Safety, Andover, MA USA

[4] Wyeth Ayerst Res, Dept Drug Safety & Metab, Chazy, NY USA

[5] Wyeth Ayerst Res, Dept Drug Safety & Metab, Collegeville, PA USA

[6] Wyeth Ayerst Res, Dept Early Dev & Clin Pharmacol, Collegeville, PA USA

[7] Wyeth Ayerst Res, Dept Clin Translat Med, Collegeville, PA USA

来源：

JOURNAL OF PHARMACOLOGY AND EXPERIMENTAL THERAPEUTICS | 2009年 / 331卷 / 02期

关键词：

BETA-PEPTIDE PRODUCTION; CEREBROSPINAL-FLUID; IN-VIVO; THYMOCYTE DEVELOPMENT; MOUSE MODEL; BRAIN; PRESENILIN; COMPLEX; PLASMA; MICE;

D O I：

10.1124/jpet.109.152975

中图分类号：

R9 [药学];

学科分类号：

1007 ;

摘要：

The presenilin containing gamma-secretase complex is responsible for the regulated intramembraneous proteolysis of the amyloid precursor protein (APP), the Notch receptor, and a multitude of other substrates. gamma-Secretase catalyzes the final step in the generation of A beta(40) and A beta(42) peptides from APP. Amyloid beta-peptides (A beta peptides) aggregate to form neurotoxic oligomers, senile plaques, and congophilic angiopathy, some of the cardinal pathologies associated with Alzheimer's disease. Although inhibition of this protease acting on APP may result in potentially therapeutic reductions of neurotoxic A beta peptides, nonselective inhibition of the enzyme may cause severe adverse events as a result of impaired Notch receptor processing. Here, we report the preclinical pharmacological profile of GSI-953 (begacestat), a novel thiophene sulfonamide gamma-secretase inhibitor (GSI) that selectively inhibits cleavage of APP over Notch. This GSI inhibits A beta production with low nanomolar potency in cellular and cell-free assays of gamma-secretase function, and displaces a tritiated analog of GSI-953 from enriched gamma-secretase enzyme complexes with similar potency. Cellular assays of Notch cleavage reveal that this compound is approximately 16-fold selective for the inhibition of APP cleavage. In the human APP-overexpressing Tg2576 transgenic mouse, treatment with this orally active compound results in a robust reduction in brain, plasma, and cerebral spinal fluid A beta levels, and a reversal of contextual fear-conditioning deficits that are correlated with A beta load. In healthy human volunteers, oral administration of a single dose of GSI-953 produces dose-dependent changes in plasma A beta levels, confirming pharmacodynamic activity of GSI-953 in humans.

引用

页码：598 / 608

页数：11

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