Robert E. Humphreys - Acton MA Sharlene Adams - Watertown MA Minzhen Xu - Northborough MA
Assignee:
Antigen Express, Inc. - Worcester MA
International Classification:
A61K 3900
US Classification:
4241921, 4241841, 4241851, 530328
Abstract:
The present invention provides an MHC class II antigen presentation enhancing hybrid polypeptide. The hybrid has an N-terminus comprising the mammalian Ii key peptide LRMKLPKPPKPVSKMR (SEQ ID NO: 1) and modifications thereof which retain antigen presentation enhancing activity, a C-terminus comprising an antigenic epitope in the form of a polypeptide or peptidomimetic structure which binds to the antigenic peptide binding site of an MHC class II molecule, and an intervening chemical structure covalently linking the N-terminal and C-terminal components.
Methods and products for stimulating hematopoiesis, preventing low levels of hematopoietic cells and producing increased numbers of hematopoietic and mature blood cells are provided. The methods and products can be used both in vivo and in vitro. The methods involve administering an agent of Formula I: wherein m is an integer between 0 and 10, inclusive; A and A are L-amino acid residues such that the A in each repeating bracketed unit can be the same or a different amino acid residue; the C bonded to B is in the L-configuration; the bonds between A and N, A and C, and between A and N are peptide bonds; and each X and X is, independently, a hydroxyl group or a group capable of being hydrolyzed to a hydroxyl group in aqueous solution at physiological pH. A particularly preferred agent that is useful in practicing the invention is a ValBoroPro.
Ii Peptide Therapeutics To Enhance Antigen Presentation
Disclosed is a class of compounds referred to herein as effector compounds. Effector compounds are useful in connection with the modulation of an immune response. Modulation refers to the ability of the effector compounds of the present invention to either enhance (antigen supercharging) or inhibit (immunosuppressant activities) antigen presentation, depending upon the nature of the particular effector compound and the therapeutic context. Effector compounds include peptides, modified peptides and peptidomimetics. Also disclosed are methods for modulating presentation of an MHC class II restricted antigenic peptide to a T cell. Also disclosed are effector compounds demonstrated to act specifically on a human MHC class II allele. Also disclosed is a second class of compounds, referred to herein as immunomodulatory organic compounds. Such compounds are identified by a method which includes the following steps: providing a first complex comprising an MHC class II molecule to which an antigenic peptide has been bound; contacting the first complex with mammalian Ii key peptide LRMKLPKPPKPVSKMR (SEQ ID NO:1) (or modifications thereof including peptidomimetics), thereby forming a second complex; and screening organic molecules for compounds which bind to the second complex but not to the first complex, and which exhibit immunomodulatory activity.
Methods and products for stimulating hematopoiesis, preventing low levels of hematopoietic cells and producing increased numbers of hematopoietic and mature blood cells are provided. The methods and products can be used both in vivo and in vitro. The methods involve administering an agent of Formula I.
The present invention provides an MHC class II antigen presentation enhancing hybrid polypeptide. The hybrid has an N-terminus comprising the mammalian Ii key peptide LRMKLPKPPKPVSKMR (SEQ ID NO: 1) and modifications thereof which retain antigen presentation enhancing activity, a C-terminus comprising an antigenic epitope in the form of a polypeptide or peptidomimetic structure which binds to the antigenic peptide binding site of an MHC class II molecule, and an intervening chemical structure covalently linking the N-terminal and C-terminal components.
The present invention provides an MHC class II antigen presentation enhancing hybrid polypeptide. The hybrid has an N-terminus comprising the mammalian Ii key peptide LRMKLPKPPKPVSKMR (SEQ ID NO: 1) and modifications thereof which retain antigen presentation enhancing activity, a C-terminus comprising an antigenic epitope in the form of a polypeptide or peptidomimetic structure which binds to the antigenic peptide binding site of an MHC class II molecule, and an intervening chemical structure covalently linking the N-terminal and C-terminal components.
Jason Baum - Needham MA, US Bryan Johnson - Natick MA, US Alexey Alexandrovich Lugovskoy - Woburn MA, US Lihui Xu - Chestnut Hill MA, US Neeraj Kohli - Brighton MA, US Jonathan Basil Fitzgerald - Arlington MA, US Sharlene Adams - Waltham MA, US
Provided are bispecific antibodies that are useful as anti-neoplastic agents and that bind specifically to human IGF-1R and human ErbB3. Exemplary antibodies inhibit signal transduction through either or both of IGF-1R and ErbB3.
Methods And Compositions Relating To Isoleucine Boroproline Compounds
Sharlene Adams - Waltham MA, US Glenn Miller - Merrimac MA, US Michael Jesson - Hopedale MA, US Barry Jones - Cambridge MA, US
Assignee:
Point Therapeutics, Inc. - Boston MA
International Classification:
A61K031/69
US Classification:
514/064000
Abstract:
A method for treating subjects with, inter alia, abnormal cell proliferation or infectious disease. Compositions containing Ile-boroPro compounds are also provided. The invention embraces the use of these compounds alone or in combination with other therapeutic agents.
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