The General Hospital Corporation

Beth Israel Deaconess Medical Center, Inc.

Mersana Therapeutics, Inc.

Mikhail I Papisov

Alexander Yurkovetskiy

Thomas J Brady

David R Elmaleh

The present invention relates to conjugate comprising a carrier substituted with one or more occurrences of a moiety having the structure:  In another aspect, the invention provides compositions comprising the conjugates, methods for their preparation, and methods of use thereof in the treatment of various disorder, including, but not limited to cancer.

Dual phase drug release system

The present invention relates to biodegradable biocompatible polyketals, methods for their preparation, and methods for treating animals by administration of biodegradable biocompatible polyketals. In one aspect, a method for forming the biodegradable biocompatible polyketals comprises combining a glycol-specific oxidizing agent with a polysaccharide to form an aldehyde intermediate, which is combined with a reducing agent to form the biodegradable biocompatible polyketal. The resultant biodegradable biocompatible polyketals can be chemically modified to incorporate additional hydrophilic moieties. A method for treating animals includes the administration of the biodegradable biocompatible polyketal in which biologically active compounds or diagnostic labels can be disposed. The present invention also relates to chiral polyketals, methods for their preparation, and methods for use in chromatographic applications, specifically in chiral separations. A method for forming the chiral polyketals comprises combining a glycol-specific oxidizing agent with a polysaccharide to form an aldehyde intermediate, which is combined with a suitable reagent to form the chiral polyketal. A method for use in chiral separations includes the incorporation of the chiral polyketals in the mobile phase during a chromatographic separation, or into chiral stationary phases such as gels. The present invention further relates to chiral polyketals as a source for chiral compounds, and methods for generating such chiral compounds.

Biodegradable polyketal polymers and methods for their formation and use

Oxime conjugates and methods for their formation and use

Drug-carrier complexes, drug carriers, pharmaceutical formulations, methods of delivery drugs to an organism or tissue culture, methods of increasing the solubility of a substance, targeted carriers, drug delivery systems and implants are described. The compositions and methods of the invention include forming complexes having reversible associations between nucleotides and drugs. The compositions and methods of the invention can be employed to target drugs to cells, organisms or combinations of cells to treat and to study the underlying mechanisms of diseases, and to test drug candidates.

Drug-carrier complexes and methods of use thereof

The present invention broadly relates to the field of protein modification, and, more specifically, to conjugates of proteins or analogs thereof to a water-soluble biocompatible polymer and methods of making and using the same.

Protein conjugates with a water-soluble biocompatible, biodegradable polymer

The present invention relates to conjugate comprising a carrier substituted with one or more occurrences of a moiety having the structure (I): wherein each occurrence of M is independently a modifier having a molecular weight &#x2266;10 kDa; denotes direct of indirect attachment of M to linker L; and each occurrence of Lis independently an optionally substituted succinamide-containing linker, whereby the modifier M is directly or indirectly attached to the succinamide linker through an amide bond, and the carrier is linked directly or indirectly to each occurrence of the succinamide linker through an ester bond. In another aspect, the invention provides compositions comprising the conjugates, methods for their preparation, and methods of use thereof in the treatment of various disorder, including, but not limited to cancer.

The present invention relates to biodegradable biocompatible polyketals, methods for their preparation, and methods for creating animals by administration of biodegradable biocompatible polyketals. In one aspect, a method for forming the biodegradable biocompatible polyketals comprises combining a glycol-specific oxidizing agent with a polysaccharide to form an aldehyde intermediate, which is combined with a reducing agent to form the biodegradable biocompatible polyketal. The resultant biodegradable biocompatible polyketals can be chemically modified to incorporate additional hydrophilic moieties. A method for treating animals includes the administration of the biodegradable biocompatible polyketal in which biologically active compounds or diagnostic labels can be disposed. The present invention also relates to chiral polyketals, methods for their preparation, and methods for use in chromatographic applications, specifically in chiral separations. A method for forming the chiral polyketals comprises combining a glycol-specific oxidizing agent with a polysaccharide to form an aldehyde intermediate, which is combined with a suitable reagent to form the chiral polyketal. A method for use in chiral separations includes the incorporation of the chiral polyketals in the mobile phase during a chromatographic separation, or into chiral stationary phases such as gels. The present invention further relates to chiral polyketals as a source for chiral compounds, and methods for generating such chiral compounds.

The present invention relates to conjugate comprising a carrier substituted with one or more occurrences of a moiety having the structure (I): wherein each occurrence of M is independently a modifier having a molecular weight &#x2266;10 kDa; denotes direct of indirect attachment of M to linker L; and each occurrence of Lis independently an optionally substituted succinamide-containing linker, whereby the modifier M is directly or indirectly attached to the succinamide linker through an amide bond, and the carrier is linked directly or indirectly to each occurrence of the succinamide linker through an ester bond. In another aspect, the invention provides compositions comprising the conjugates, methods for their preparation, and methods of use thereof in the treatment of various disorder, including, but not limited to cancer. 

The present invention relates to biodegradable biocompatible polyacetals, methods for their preparation, and methods for treating mammals by administration of biodegradable biocompatible polyacetals. A method for forming the biodegradable biocompatible polyacetals combines a glycol-specific oxidizing agent with a polysaccharide to form an aldehyde intermediate which is combined with a reducing agent to form the biodegradable biocompatible polyacetal. The resultant biodegradable biocompatible polyacetals can be chemically modified to incorporate additional hydrophilic moieties. A method for treating mammals includes the administration of the biodegradable biocompatible polyacetal in which biologically active compounds or diagnostic labels can be disposed.

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Winchester, MA, United States of America

Mikhail I Papisov