Abstract: The invention provides a sustained release composition for intravitreal injection to the eye of a subject in need thereof. The sustained release composition contains an effective amount of a therapeutic agent in association with a nanosphere. The nanosphere contains a particle that comprises a particle-forming component capable of forming a vesicle, and an agent-carrying component capable of forming a complex with the therapeutic agent via electrostatic charge-charge interaction or hydrophobic-hydrophobic interaction. The particle-forming component has at least one head group moiety selected from a hydrophobic head group moiety, a polar head group moiety and a combination thereof. The agent-carrying component is a chemical entity that contains one or more negatively or positively charged groups.

Abstract: The invention provides a liposome composition for delivering high pay-load of a therapeutic agent to neovascularization sites of the eyes in a patient in need thereof. The liposome composition for entrapping the therapeutic agent comprises a particle forming component composed of a variety of vesicle-forming lipids, and an agent-carrying component able to form a complex with the therapeutic agent via electrostatic charge-charge interaction or hydrophobic-hydrophobic interaction; wherein the liposome composition comprising the therapeutic agent has a mean particle diameter of about 30 to 200 nm and may accumulate at the neovascularization sites of the eyes 24 hours after the intravenous administration of the liposome composition comprising the therapeutic agent to the patient. A method for delivering the therapeutic agent to the eyes in a patient with this liposome composition is also provided.

Abstract: The present invention is directed to a method of inhibiting cancer cell growth, comprising administering a pharmaceutical composition to a subject in need thereof. The pharmaceutical composition comprises at least one camptothecin derivative or a pharmaceutically acceptable salt thereof; and at least one PEG phospholipid, and provides a sustained release of topotecan as an active ingredient.

Abstract: The present invention provides two new camptothecin derivatives, which were identified as S,R- and S,S-topotecan lactates, respectively. Both compounds have anticancer activities. Pharmaceutical compositions of the new camptothecin derivatives, and cancer therapies with the new camptothecin derivatives or their pharmaceutical compositions were also provided.

Abstract: An ophthalmic drug delivery system that contains phospholipid and cholesterol for prolonging drug lifetime in the eyes.

Abstract: The present invention provides two new camptothecin derivatives, which were identified as S,R- and S,S-topotecan lactates, respectively. Both compounds have anticancer activities. Pharmaceutical compositions of the new camptothecin derivatives, and cancer therapies with the new camptothecin derivatives or their pharmaceutical compositions were also provided.

Abstract: The present invention provides novel monoclonal antibodies with a high binding affinity to all five isoforms of human VEGF.

Abstract: The present invention provides novel monoclonal antibodies with a high binding affinity to all five isoforms of human VEGF.

Abstract: The invention relates to liposome compositions for delivering, for example, therapeutic, diagnostic, and imaging agents to a subject. Methods for preparing and using such liposome compositions are further provided. The compositions and methods of the invention find particular use in treating, diagnosing, and imaging a tumor in a subject.

Abstract: The invention provides a sustained release composition for intravitreal injection to the eye of a subject in need thereof. The sustained release composition contains an effective amount of a therapeutic agent in association with a nanosphere. The nanosphere contains a particle that comprises a particle-forming component capable of forming a vesicle, and an agent-carrying component capable of forming a complex with the therapeutic agent via electrostatic charge-charge interaction or hydrophobic-hydrophobic interaction. The particle-forming component has at least one head group moiety selected from a hydrophobic head group moiety, a polar head group moiety and a combination thereof. The agent-carrying component is a chemical entity that contains one or more negatively or positively charged groups.

Abstract: The invention provides a liposome composition for delivering high pay-load of a therapeutic agent to neovascularization sites of the eyes in a patient in need thereof. The liposome composition for entrapping the therapeutic agent comprises a particle forming component composed of a variety of vesicle-forming lipids, and an agent-carrying component able to form a complex with the therapeutic agent via electrostatic charge-charge interaction or hydrophobic-hydrophobic interaction; wherein the liposome composition comprising the therapeutic agent has a mean particle diameter of about 30 to 200 nm and may accumulate at the neovascularization sites of the eyes 24 hours after the intravenous administration of the liposome composition comprising the therapeutic agent to the patient.