Soonchunhyang University Industry Academy Cooperation Foundation

Keon-Hyoung Song

Guang Jin Choi

Sang-Ki Rhee

Eun O Park

Hoon Seo

Min-Jeong Lee

Nan-Hee Chun

The present invention relates to a method for producing an interleukin-2 protein using methylotrophic yeast. The method for producing interleukin-2 according to the present invention shows high cell growth and protein synthesis rates by use of the established optimal cell line, and produces a large amount of a protein comprising interleukin-2 by use of the established optimal culture conditions utilizing methanol that is an inexpensive carbon source. In addition, the method according to the present invention isolates and purifies the protein by a simple process. Accordingly, the method according to the present invention highly pure interleukin-2, and thus has a significant effect on the mass-production of interleukin-2.

Method for producing interleukin-2 protein using methylotrophic yeast

The present disclosure relates to a method for preparing a novel sugar alcohol with a modified, that is, increased or decreased surface area and/or porosity while having flowability as a solid phase, and also to a sugar alcohol prepared by the preparing method or a pharmaceutical composition, a cosmetic composition, a food composition and a feed composition, comprising the sugar alcohol as a carrier. According to the present disclosure, the method for preparing a sugar alcohol comprises: (A) reacting the sugar alcohol in a solid state with a solvent (S), wherein the solid state sugar alcohol is not dissolved by the solvent (S) and is reacted with the solvent (S) as a solid dispersion; and (B) removing the solvent (S) therefrom. The sugar alcohol prepared by the preparing method of the present disclosure has a modified, that is, increased or decreased surface area and/or porosity in comparison with a conventional sugar alcohol. When the sugar alcohol prepared by the preparing method of the present disclosure is used as a carrier, a coating object, etc., or as a component of compositions for drugs, food, cosmetics, feed, etc., a ratio of an active ingredient to the carrier can be modified, so that the sugar alcohol can be used in preparing of formulations or compositions.

Liposome composition using sugar alcohol with modified surface area and/or porosity as carrier and method for preparing same

The present invention relates to an interleukin-2 expression construct for yeast, comprising a methanol oxidase (MOX) promoter; a human serum albumin gene or a fragment thereof; and an interleukin-2 (IL-2) gene, and to a yeast comprising the expression construct. The interleukin-2 expression construct for yeast according to the present invention makes it possible to produce an expressed and secreted fusion protein of human serum albumin (HSA) and interleukin-2 at low costs and easily separate recombinant interleukin-2 from the fusion protein. Thus, the interleukin-2 expression construct for yeast may be effectively used to produce a large amount of recombinant interleukin-2 with high purity.

Interleukin-2 expression construct using human serium albumin

As described herein, an peptide of SEQ ID NO: 1 is modified at the terminal end. Specifically, the carboxyl-group of the leucine at the terminal end of the amino acid sequence FCIGRL (SEQ ID NO: 1) is modified with a &#x2014;CONH. This modified peptide is used as a permeation enhancer to boost the mucous membrane permeation, thereby noticeably increasing the bioavailability of a drug that is administered together with the modified peptide. The drug to be administered with the modified peptide can be cyclosporine A.

Peptide as absorption enhancer and composition containing same

The present invention provides a preparation method for agomelatine-resorcinol and agomelatine-hydroquinone co-crystals using the solvent-antisolvent method that enables a commercial mass production. The co-crystals prepared by the preparation method of the present invention displays high dissolution rate and high stability in acidic-to-neutral media.

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Chungcheongnam-do, South Korea

Keon-Hyoung Song