Hydrogels that degrade under appropriate conditions of pH and temperature by virtue of crosslinking compounds that cleave through an elimination reaction are described. The hydrogels may be used for delivery of various agents, such as pharmaceuticals.

Disclosed are synthetic nanocarrier compositions that provide controlled release of immunosuppressants as well as related methods. The synthetic nanocarrier compositions may also include antigen in some embodiments.

Disclosed are synthetic nanocarrier compositions that provide controlled release of immunosuppressants as well as related methods. The synthetic nanocarrier compositions may also include antigen in some embodiments.

Implantable matrices and methods are provided. The matrices are configured to fit at or near a target tissue site, the matrices comprise biodegradable materials and ligands bound to the matrices and are configured to bind receptors and allow influx of cells into the implantable matrices, wherein the ratio of ligands to receptors is from about 1.5 to about 0.5.

The invention is directed to a compound according to the formula [1] ##STR00001##
wherein R.sup.1 and R.sup.2 are branched or straight groups having up to 17 atoms selected from carbon, nitrogen, oxygen and sulphur, n is 0 to and including 18, Y is sulphur or selene, X is S or O and R is —OH or an organic group comprising one or more peptides, one or more nucleic acids, one or more antibodies or combinations thereof. The invention is also directed to process for preparing said compound and the use of said compound as an adjuvant. The invention is also directed to a composition comprising said compound and the use of said composition, for example as a vaccine composition.

A biocompatible, covalently cross-linked, polymer that is obtained by reacting an electrophilically activated polyoxazoline (EL-PDX) with a nucleophilic cross-linking agent is disclosed. The EL-PDX comprises m electrophilic groups; and the nucleophilic cross-linking agent comprises n nucleophilic groups, wherein the m electrophilic groups are capable of reacting with the n nucleophilic groups to form covalent bonds; wherein m≧2, n≧2 and m+n≧5; wherein at least one of the m electrophilic groups is a pendant electrophilic group and/or wherein m≧3; and wherein the EL-PDX comprises an excess amount of electrophilic groups relative to the amount of nucleophilic groups contained in the nucleophilic cross-linking agent. Biocompatible medical products and kits comprising the cross-linked PDX-polymers are also disclosed.

A pharmaceutical composition of a polyethylene glycol-modified camptothecin derivative and a preparation method thereof. The pharmaceutical composition is prepared mainly from following components: a camptothecin derivative modified by polyethylene glycol, a pH value adjustment agent and water for injection. The pharmaceutical composition has high stability.

A maytansinoid is covalently linked through a non-cleavable linker to an EGFR antibody that is a full EGFR antagonist, such as cetuximab or panitumumab. The result is an anti-cancer agent having cytotoxicity that is potentiated in cancer cells but not normal cells. This benefit is not seen with EGFR antibodies that are partial antagonists, or with toxins that are not processed by lysosomes.

A maytansinoid is covalently linked through a non-cleavable linker to an EGFR antibody that is a full EGFR antagonist, such as cetuximab or panitumumab. The result is an anti-cancer agent having cytotoxicity that is potentiated in cancer cells but not normal cells. This benefit is not seen with EGFR antibodies that are partial antagonists, or with toxins that are not processed by lysosomes.

An object of the present invention is to provide a method for controlling skin permeability of an anionic compound and having superior safety.

An ionic liquid formed by an anionic compound and an amino acid ester is used.