Recombinant Production of Polyanionic Polymers, and Uses Thereof
First Claim
1. A recombinant fusion protein, comprising (i) a polyanionic polypeptide and (ii) a granulocyte colony stimulating factor at either one end or at both ends thereof, wherein the size of the polyanionic polypeptide is between 10 kD and 100 kD.
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Abstract
A polyanionic polymer can improve the bioactivity and water-solubility properties of a drug to which it is joined. The inventive method provides a monodispersed preparation of a recombinantly-produced polyanionic polymer that can be easily manipulated, such as lengthened. An active moiety may be chemically or recombinantly joined to a polyanionic polymer to increase its biological half-life and/or solubility. The instant invention also provides a method for targeting the delivery of a polyanionic polymer conjugate or fusion protein to a specific cell type or tissue.
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Citations
33 Claims
- 1. A recombinant fusion protein, comprising (i) a polyanionic polypeptide and (ii) a granulocyte colony stimulating factor at either one end or at both ends thereof, wherein the size of the polyanionic polypeptide is between 10 kD and 100 kD.
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4. (canceled)
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8-10. -10. (canceled)
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14. (canceled)
- 16. A vector, comprising a cassette which comprises a nucleotide sequence that encodes (i) a polyanionic polymer, wherein the size of the polyanionic polypeptide when expressed is between 10 kD and 100 kD and (ii) granulocyte colony stimulating factor.
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20-23. -23. (canceled)
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26-31. -31. (canceled)
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33-62. -62. (canceled)
Specification