Korea Institute of Science and Technology

The Asan Foundation

Futurechem Co., Ltd

Daehwa Pharm. Co., Ltd.

Ick-Chan Kwon

Kui-Won Choi

Kwang-Meyung Kim

Kyeong-Soon Park

Dae-Yoon Chi

Hyung-Jun Ahn

In-Chan Youn

Seul-Ki Lee

Sang-Yoon Kim

Hyun-Ju Sung

Hee-Seup Kil

Ju-Hee Ryu

Beom-Suk Lee

Jong-Ho Kim

Seung-Jin Lee

Yong-Hee Kim

Kuiwon Choi

Jae-Hyung Park

Jae Bong Choi

In-Hyun Lee

Cheol-hee Ahn

Jin-wook Chung

Hesson Chung

Yeong-Taek Park

Seo Young Jeong

Dae-hyuk Moon

Seung-Jae Myung

Kyu Back Lee

Jae-Pil Kim

Moon-Hee Han

Se-Geun Lee

Kul-Won Choi

Chul-Joo Lee

Won-Seok Lyoo

Young-Wook Choi

Soon-Hong Yuk

Seo-Young Jeong

Jin-Wook Chung

Seo-Young Munchonmaeul Life Apt Jeong

The present invention relates to an anticancer prodrug consisting of peptide of acetyl-SEQ ID NO: 1-linker-anticancer drug. The anticancer prodrug effectively provides an anticancer drug unstable in acid or base, such as doxorubicin, in a form of prodrug. Thus, the anticancer prodrug exists as a non-toxic inactive form when administered into the body, but effectively releases the anticancer drug as an active ingredient in the target area in the presence of caspase activated by radiation or UV treatment after administered into the body. Accordingly, the anticancer drug exhibits selective anticancer effects on cancer cells, thereby maximizing the therapeutic effect and minimizing the side-effects of chemotherapy.

Anticancer prodrug activated by radiation or ultraviolet treatment and use thereof

The present invention relates to an anticancer prodrug consisting of peptide of acetyl-SEQ ID NO: 1-linker-anticancer drug. The anticancer prodrug effectively provides an anticancer drug unstable in acid and base, such as doxorubicin, in a form of prodrug. Thus, the anticancer prodrug exists as a non-toxic inactive form when administered into the body, but effectively releases the anticancer drug as an active ingredient in the target area in the presence of caspase activated by radiation or UV treatment after administered into the body. Accordingly, the anticancer drug exhibits selective anticancer effects on cancer cells, thereby maximizing the therapeutic effect and minimizing the side-effects of chemotherapy.

Anticancer prodrugs activated by radiation or ultraviolet treatment and use thereof

The present invention relates to a recombinant protein for siRNA delivery, which allows the efficient intracellular and in vivo delivery of siRNA. More particularly, the present invention relates to a recombinant protein that allows a siRNA binding protein to be located in the interior cavity of a capsid protein of HBV (Hepatitis B virus), in which siRNAs of interest bind to the siRNA binding protein to be encapsulated within the capsid shell, thereby providing stability against the external attack such as nucleases and achieving the efficient intracellular and in vivo delivery of siRNA by its release into the cytosolic space after cell uptake.

Recombinant protein for intracellular delivery of siRNA and composition comprising the same

The present invention relates to a fusion protein comprising small heat shock protein, a cage protein formed thereby, and novel use thereof, more particularly, a fusion protein comprising a small heat shock protein, a recognition site of a protease, and a histidine polymer, wherein the recognition site and the histidine polymer are sequentially linked to a carboxyl terminal of the small heat shock protein, a cage protein formed thereby, and novel use thereof. The fusion protein of the present invention, and a cage protein formed by the self-assembly properties of the fusion protein are not cytotoxic, and emits a fluorescence signal of about 20 to about 50 times higher comparing to a single peptide for the conventional molecular imaging, per unit protein. Additionally, cell permeability is very excellent, thereby to be effectively used as a biosensor or a bioactive material carrier.

Fusion protein comprising small heat shock protein, cage protein formed thereby, and novel use thereof

Recombinant proteins for siRNA delivery and a composition including same. These recombinant proteins include a p19 RNA binding protein and a target oriented peptide and can secure the stability of siRNAs from external attacks such as various degradation enzymes, have selective binding affinity to cancer cells by virtue of target-oriented peptides having various cancer cells as their target, and silence target genes by effectively delivering the siRNAs to cells and biological tissues by the release of the siRNAs to the cytoplasms after the cell penetration thereof. Therefore, they are expected to be effectively employed as siRNA delivery vehicles for siRNA therapeutic agents, cell-based drug screening compositions and research.

Recombinant protein for siRNA delivery and composition comprising the same

Disclosed are a nanoparticle sensor for measuring protease activity, for protease imaging, and a method for preparing the same. More specifically, the present invention relates to a nanoparticle sensor for measuring protease activity in which a fluorophore- and a quencher-conjugated peptide substrate is conjugated to a biocompatible polymer nanoparticle. The peptide substrate is specifically lysed by a protease. The sensor according to the present invention is capable of inhibiting emission of fluorescence with high extinctive activity of the quencher on a fluorescent material. But strong fluorescence is specifically emitted only if the peptide substrate is lysed by a specific protease. Therefore, the sensor is especially useful as a method for screening a novel drug such as a protease overexpression inhibitor, and early diagnosis of incurable diseases and various diseases such as autoimmune diseases including cancer, osteoarthritis, rheumatoid arthritis and dementia.

Nanoparticle sensor for measuring protease activity and method for manufacturing the same

Disclosed is a novel photosensitizer based on polymer derivatives-photosensitizer conjugates for photodynamic therapy capable of being selectively accumulated in cancerous tissues and producing singlet oxygen or free radical by laser irradiation. The polymer derivatives-photosensitizer conjugates for photodynamic therapy are prepared as nano-sized particles, and have excellent selection and accumulation ratio for cancerous tissues. The photosensitizer conjugates can produce singlet oxygen or free radical by a specific laser wavelength. Owing to the excellent selection and accumulation ratio for cancerous tissues, the conjugates minimizes photo-cytotoxicity of the conventional photosensitizer having a low molecular amount. Accordingly, the conjugates are very useful as a photosensitizes for photodynamic therapy with reduced side effects and excellent therapeutic effectiveness.

Photosensitizer based on polymer derivatives-photosensitizer conjugates for photodynamic therapy

Disclosed are a metal nanoparticle onto which a peptide substrate specifically degraded by protease and fluorophore are chemically modified for selectively imaging protease expressed in cell and in tissue in a human body, and the use thereof. Also, a quantitative analysis method of protease using the metal nanoparticle, a cell imaging method and a drug screening method of inhibiting a protease overexpression are provided. In detail, the present invention is directed to a metal nanoparticle having a peptide substrate and fluorophore coupled thereto, the peptide substrate and the fluorophore being specifically degraded by due to a protease activated in various ways in cell and in a human body to exhibit fluorescence. Hence, the metal nanoparticle can be used to rapidly screen activation and inhibition of the protease in the imaging manner. Also, the metal nanoparticle is capable of being selectively absorbed into a cell and a tissue so as to be possibly used as a sensor for real-time cell imaging and early diagnosis of non-invasive diseases.

Gold nanoparticle based protease imaging probes and use thereof

Disclosed are Ionic complex nanoparticles for detecting heparanase activities and a method for preparing the same. More specifically, disclosed are Ionic complex nanoparticles for detecting heparanase activities, wherein negative-ion substrate polymers specifically degraded by heparanase and positive-ion biocompatible polymers ionically bind to each other, and fluorophores or quenchers bind to each of the polymers. The ionic complex nanoparticles for detecting heparanase activities may be applied to a method for screening novel drugs such as inhibitors that prevent over-expression of heparanase. Various cells and tissues where over-expression of heparanase occurs may be non-invasively imaged in cancer cells, cancer tissues, and tissues of various inflammatory diseases. Accordingly, the ionic complex nanoparticles for detecting heparanase activities may be effectively used to early diagnose various diseases and incurable diseases including autoimmune diseases such as cancers, osteoarthritis, rheumatoid arthritis, and dementia.

Ionic complex nanoparticles for detecting heparanase activities and method for preparing the same

The present invention relates to a paclitaxel composition and the preparation methods thereof to solubilize paclitaxel wherein said composition comprises 4 to 90% by weight of at least one selected from the monoglycerides, 0.01 to 90% by weight of at least one oil and 0.01 to 20% by weight of paclitaxel. Also the present invention relates to a paclitaxel composition including emulsifiers and the preparation methods thereof to solubilize paclitaxel wherein said composition comprises 4 to 90% by weight of at least one selected from the monoglycerides, 0.01 to 90% by weight of at least one emulsifier and 0.01 to 20% by weight of paclitaxel. The composition of the present invention is an effective paclitaxel delivery system since the composition solubilizes paclitaxel, does not form aggregates after being dispersed in water, adsorbs well on the intestinal wall, and therefore has high bioavailability.

Composition for solubilization of paclitaxel and preparation method thereof

A method of manufacturing a porous matrix-type drug delivery system is provided. It comprises the steps of: dispersing, stirring, and emulsifying an aqueous solution of a drug in an organic solvent having a polymer compound and a surface active agent solved therein; thereafter forming it into a desirable matrix shape; lyophilizing or drying it at a low temperature or room temperature until the matrix surface is hardened; and drying it again in order to remove the water and the organic solvent.

Method of manufacturing porous matrix-type controlled release systems using emulsion technique

A method for separating poly(vinyl acetate) particles having various particle sizes, which have been prepared by suspension polymerization of vinyl acetate monomers, into respective microspheric poly(vinyl acetate) particles with uniform particle size distribution by the use of inorganic salt as a dispersing and antistatic agent, a method for preparing the microspheric embolic particles of a dual structure consisting of poly(vinyl acetate) core/poly(vinyl alcohol) shell by suspending the separated poly(vinyl acetate) particles into an aqueous alkali solution and subjecting the suspended particles to a heterogeneous surface saponification and the microspheric embolic particles prepared.

Microspheric embolic materials having a dual structure of poly(vinyl acetate) core and poly(vinyl alcohol) shell and method for preparing the same

Growing community of inventors

Seoul, South Korea

Ick-Chan Kwon