Praecis Pharmaceuticals, Inc.

Joseph Chin

Malcolm L Gefter

Gary Fred Musso

Mark A Findeis

Ethan R Signer

James Wakefield

Michael Kelley

Jung-Ja Lee

Susan Molineaux

Christopher C Arico-Muendel

Kathryn Phillips

Neil J Hayward

Sonja Komar-Panicucci

Marc B Garnick

Howard Benjamin

Arvind Hundal

Laura Kasman

Michael J Reed

William Kubasek

Sonja A Komar

Compounds that modulate natural &#x3b2; amyloid peptide aggregation are provided. The modulators of the invention comprise a peptide, preferably based on a &#x3b2; amyloid peptide, that is comprised entirely of D-amino acids. Preferably, the peptide comprises 3&#x2013;5 D-amino acid residues and includes at least two D-amino acid residues independently selected from the group consisting of D-leucine, D-phenylalanine and D-valine. In a particularly preferred embodiment, the peptide is a retro-inverso isomer of a &#x3b2; amyloid peptide, preferably a retro-inverso isomer of A&#x3b2;. In certain embodiments, the peptide is modified at the amino-terminus, the carboxy-terminus, or both. Preferred amino-terminal modifying groups include cyclic, heterocyclic, polycyclic and branched alkyl groups. Preferred carboxy-terminal modifying groups include an amide group, an alkyl amide group, an aryl amide group or a hydroxy group. Pharmaceutical compositions comprising the compounds of the invention, and diagnostic and treatment methods for amyloidogenic diseases using the compounds of the invention, are also disclosed.

Modulators of &#x3b2;-amyloid peptide aggregation comprising D-amino acids

Compounds that modulate natural &bgr; amyloid peptide aggregation are provided. The modulators of the invention comprise a peptide, preferably based on a &bgr; amyloid peptide, that is comprised entirely of D-amino acids. Preferably, the peptide comprises 3-5 D-amino acid residues and includes at least two D-amino acid residues independently selected from the group consisting of D-leucine, D-phenylalanine and D-valine. In a particularly preferred embodiment, the peptide is a retro-inverso isomer of a &bgr; amyloid peptide, preferably a retro-inverso isomer of A&bgr; . In certain embodiments, the peptide is modified at the amino-terminus, the carboxy-terminus, or both. Preferred amino-terminal modifying groups include cyclic, heterocyclic, polycyclic and branched alkyl groups. Preferred carboxy-terminal modifying groups include an amide group, an alkyl amide group, an aryl amide group or a hydroxy group. Pharmaceutical compositions comprising the compounds of the invention, and diagnostic and treatment methods for amyloidogenic diseases using the compounds of the invention, are also disclosed.

Modulators of &bgr;-amyloid peptide aggregation comprising D-amino acids

Compounds that modulate natural &bgr; amyloid peptide aggregation are provided. The modulators of the invention comprise a peptide, preferably based on a &bgr; amyloid peptide, that is comprised entirely of D-amino acids. Preferably, the peptide comprises 3-5 D-amino acid residues and includes at least two D-amino acid residues independently selected from the group consisting of D-leucine, D-phenylalanine and D-valine. In a particularly preferred embodiment, the peptide is a retro-inverso isomer of a &bgr; amyloid peptide, preferably a retro-inverso isomer of A&bgr;,. In certain embodiments, the peptide is modified at the amino-terminus, the carboxy-terminus, or both. Preferred amino-terminal modifying groups include cyclic, heterocyclic, polycyclic and branched alkyl groups. Preferred carboxy-terminal modifying groups include an amide group, an alkyl amide group, an aryl amide group or a hydroxy group. Pharmaceutical compositions comprising the compounds of the invention, and diagnostic and treatment methods for amyloidogenic diseases using the compounds of the invention, are also disclosed.

Compounds that modulate natural .beta. amyloid peptide aggregation are provided. The modulators of the invention comprise a peptide, preferably based on a .beta. amyloid peptide, that is comprised entirely of D-amino acids. Preferably, the peptide comprises 3-5 D-amino acid residues and includes at least two D-amino acid residues independently selected from the group consisting of D-leucine, D-phenylalanine and D-valine. In a particularly preferred embodiment, the peptide is a retro-inverso isomer of a .beta. amyloid peptide, preferably a retro-inverso isomer of A.beta..sub.17-21. In certain embodiments, the peptide is modified at the amino-terminus, the carboxy-terminus, or both. Preferred amino-terminal modifying groups include cyclic, heterocyclic, polycyclic and branched alkyl groups. Preferred carboxy-terminal modifying groups include an amide group, an alkyl amide group, an aryl amide group or a hydroxy group. Pharmaceutical compositions comprising the compounds of the invention, and diagnostic and treatment methods for amyloidogenic diseases using the compounds of the invention, are also disclosed.

Modulators of .beta.-amyloid peptide aggregation comprising D-amino acids

Compounds that modulate the aggregation of amyloidogenic proteins or peptides are disclosed. The modulators of the invention can promote amyloid aggregation or, more preferably, can inhibit natural amyloid aggregation. In a preferred embodiment, the compounds modulate the aggregation of natural .beta. amyloid peptides (.beta.-AP). In a preferred embodiment, the .beta. amyloid modulator compounds of the invention are comprised of an A.beta. aggregation core domain and a modifying group coupled thereto such that the compound alters the aggregation or inhibits the neurotoxicity of natural .beta. amyloid peptides when contacted with the peptides. Furthermore, the modulators are capable of altering natural .beta.-AP aggregation when the natural .beta.-APs are in a molar excess amount relative to the modulators. Pharmaceutical compositions comprising the compounds of the invention, and diagnostic and treatment methods for amyloidogenic diseases using the compounds of the invention, are also disclosed.

A.beta. peptides that modulate .beta.-amyloid aggregation

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Salem, MA, United States of America

Joseph Chin