Generation of Dynamic Combinatorial Libraries Using Hydrazone-Functionalized Surface Mimetics
作者:Sarah H. Hewitt、Andrew J. Wilson
DOI:10.1002/ejoc.201800022
日期:2018.4.30
Dynamiccombinatorial chemistry (DCC) represents an approach, whereby traditional supramolecular scaffolds used for protein surface recognition might be exploited to achieve selective high affinity target recognition. Synthesis, in situ screening and amplification under selection pressure allows the generation of ligands, which bear different moieties capable of making multivalent non‐covalent interactions
Novel therapeutic antibody conjugates comprising amine derivatives of folic acid analogs covalently attached via a reactive amine group to an oxidized carbohydrate moiety of an antibody or antibody fragment are disclosed. The conjugates retain substantially the same immunorespecificity and immunoreactivity of the unconjugated antibody molecule. The immunospecificity and immunoreactivity of the antibody conjugates permits targeted delivery of the attached therapeutically effective amine derivative of folic acid analogs in vivo. The conjugates are therapeutically effective against a variety of neoplastic and non-neoplastic cellular disorders when administered in vivo. Methods for synthesizing the amine derivatives of folic acid analogs, methods for preparing the antibody conjugates, and methods for use of the conjugates in vivo are also disclosed.
[EN] ANTIBODY CONJUGATES OF AMINE DERIVATIVES OF FOLIC ACID ANALOGS
申请人:CYTOGEN CORPORATION
公开号:WO1987006837A1
公开(公告)日:1987-11-19
(EN) Novel therapeutic antibody conjugates comprising amine derivatives of folic acid analogs covalently attached via a reactive amine group to an oxidized carbohydrate moiety of an antibody or antibody fragment. The conjugates retain substantially the same immunospecificity and immunoreactivity of the unconjugated antibody molecule. The immunospecificity and immunoreactivity of the antibody conjugates permits targeted delivery of the attached therapeutically effective amine derivative of folic acid analogs $i(in vivo). The conjugates are therapeutically effective against a variety of neoplastic and non-neoplastic cellular disorders when administered $i(in vivo). Methods for synthesizing the amine derivatives of folic acid analogs, methods for preparing the antibody conjugates, and methods for use of the conjugates $i(in vivo) are also disclosed.(FR) Nouveaux conjugués d'anticorps thérapeutiques comprenant des dérivés d'amine d'analogues de l'acide folique attachés de manière covalente par l'intermédiaire d'un groupe amine réactif à une fraction d'hydrate de carbone oxydé d'un anticorps ou d'un fragment d'anticorps. Les conjugués gardent sensiblement les mêmes immunospécificité et immunoréactivité de la molécule d'anticorps non conjuguée. L'immunospécificité et l'immunoréactivité des conjugués d'anticorps permettent l'apport ciblé du dérivé d'amine attaché, thérapeutiquement efficace des analogues de l'acide folique $i(in vivo). Les conjugués sont thérapeutiquement efficaces contre une variété de troubles cellulaires néoplastiques et non néoplastiques lorsqu'ils sont administrés $i(in vivo). Des procédés de synthèse des dérivés d'amine des analogues de l'acide folique, des procédés de préparation des conjugués d'anticorps, et des procédés d'utilisation des conjugués $i(in vivo) sont également décrits.
Altered cellular response to adsorbed matrix protein by chemoselective ligation of small molecules
作者:Paul A. De Bank、Barrie Kellam、David A. Kendall、Kevin M. Shakesheff
DOI:10.1039/b415893h
日期:——
In the field of tissue engineering, there is a constant drive to develop materials that enable control over cell adhesion, growth and differentiation for optimal tissue development. In many cases, these materials incorporate or are coated with extracellular matrix proteins to increase cell adhesion and spreading. Here we show that chemoselective modification of an adsorbed matrix protein can be used to selectively alter the response of cultured cells. Using the glycoprotein laminin-1, it was shown that oxidation of terminal sialic acid moieties resulted in the generation of aldehyde groups which could be employed to chemoselectively ligate hydrazide-bearing biomolecules. The hydrazide derivative of the tripeptide Leu–Arg–Glu, a “stop” signal for motoneuron outgrowth, was ligated to periodate-treated laminin and shown to inhibit the mean neurite length of primary spinal cord motoneurons by 39% in comparison to controls. These results demonstrate that adsorbed glycoproteins can be readily modified in order to alter the cell response and could enable matrices to be tailored to different cell types.