Polymers for functional particles
First Claim
1. A method of making nanoparticles, comprising:
- providing a solution comprising a first population of amphiphilic macromolecules comprising a first hydrophobic portion and a second hydrophilic portion and a second population of amphipilic macromolecules comprising a first hydrophobic portion, a second hydrophilic portion, and 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 diagnostic or therapeutic moiety,wherein the first, second, or both portions of the amphiphilic macromolecules comprise a biodegradable polymer;
contacting the solution with a polymer nonsolvent under conditions wherein the macromolecules orient to form the nanoparticles having the hydrophobic portion on the inside of the particles and the hydrophilic portions and moieties on the surface of the nanoparticle.
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Accused Products
Abstract
A 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. The nanoparticle may contain a drug. The moiety may include a polypeptide or a polynucleotide, such as an aptamer. The moiety may be a targeting moiety, an imaging moiety, a chelating moiety, a charged moiety, or a therapeutic moiety. Another aspect 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 methods use such libraries, use or administer such polymeric conjugates, or promote the use of such polymeric conjugates. Kits involving such polymeric conjugates are also described.
305 Citations
22 Claims
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1. A method of making nanoparticles, comprising:
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providing a solution comprising a first population of amphiphilic macromolecules comprising a first hydrophobic portion and a second hydrophilic portion and a second population of amphipilic macromolecules comprising a first hydrophobic portion, a second hydrophilic portion, and 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 diagnostic or therapeutic moiety, wherein the first, second, or both portions of the amphiphilic macromolecules comprise a biodegradable polymer; contacting the solution with a polymer nonsolvent under conditions wherein the macromolecules orient to form the nanoparticles having the hydrophobic portion on the inside of the particles and the hydrophilic portions and moieties on the surface 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)
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Specification