Polymers for functional particles
First Claim
1. A nanoparticulate composition comprising a particle having an average characteristic dimension of less than about 1 micrometer,the particle formed of an amphiphilic macromolecule comprising(a) a first hydrophobic portion,(b) a second hydrophilic portion;
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Abstract
The present invention generally relates to polymers and macromolecules, in particular, to block polymers useful in particles such as nanoparticles. One aspect of the invention is directed to a method of developing nanoparticles with desired properties. In one set of embodiments, the method includes producing libraries of nanoparticles having highly controlled properties, which can be formed by mixing together two or more macromolecules in different ratios. One or more of the macromolecules may be a polymeric conjugate of a moiety to a biocompatible polymer. In some cases, the nanoparticle may contain a drug. The moiety, in some embodiments, may have a molecular weight greater than about 1000 Da; for example, the moiety may include a polypeptide or a polynucleotide, such as an aptamer. The moiety may also be a targeting moiety, an imaging moiety, a chelating moiety, a charged moiety, or a therapeutic moiety. Another aspect of the invention is directed to systems and methods of producing such polymeric conjugates. In some embodiments, a solution containing a polymer is contacted with a liquid, such as an immiscible liquid, to form nanoparticles containing the polymeric conjugate. Other aspects of the invention are directed to methods using such libraries, methods of using or administering such polymeric conjugates, methods of promoting the use of such polymeric conjugates, kits involving such polymeric conjugates, or the like.
241 Citations
29 Claims
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1. A nanoparticulate composition comprising a particle having an average characteristic dimension of less than about 1 micrometer,
the particle formed of an amphiphilic macromolecule comprising (a) a first hydrophobic portion, (b) a second hydrophilic portion; - and
(c) a third portion comprising a moiety selected from the group consisting of a targeting moiety, an imaging moiety, a chelating moiety, a moiety having multiple charge groups, and a therapeutic moiety, wherein the first, second or both portions comprise a biocompatible polymer, and wherein the particles are formed by self-assembling the macromolecule into nanoparticles having a greater concentration of the third portion moiety on the surface of the nanoparticle and a detectable amount of the third portion moiety in the interior of the nanoparticle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification