Abstract:
본 발명은 세로토닌 6 수용체 리간드의 고효율 검색방법에 관한 것으로, HA-5-HT 6 R을 안정적으로 발현하는 세포주를 이용한 세로토닌 6 수용체 리간드의 고효율 검색방법에 관한 것이다. 본 발명의 세포주는 HA-5-HT 6 R을 안정적으로 발현함으로써, 5-HT 6 R에 선택적으로 작용하는 리간드의 검색 효율을 증가시키며, 5-HT 6 R과 결합하는 단백질 연구에 유용하게 이용될 수 있다. 이에, 5-HT 6 R이 관련된 우울증과 알츠하이머 등의 뇌질환 및 정신질환 예방과 진단 및 치료제 개발에 유용할 것이다. 세로토닌 6 수용체, HA, 리간드, 우울증, 알츠하이머
Abstract:
PURPOSE: A transformed cell line which expresses human serotonin 6 receptor(5-HT6R) is provided to stably express Myc-5-HT6R on the cell surface and to use in screening human serotonin 6-receptor-specific ligand by fluorescence imaging. CONSTITUTION: A HELA cell line stably expresses Myc-5-HT6R by transducing vector containing Myc-labeled 5-HT6R. The Myc-labeld 5-HT6R gene is a gene of sequence number 1. A HELA cell line is Hela cell(deposit number KCLRF=BR-00200) which stably expresses Myc-5-HT6R. A method for screening 5-HT6R ligand of high efficiency comprises: a step of treating test chemical to a cell line; a step of measuring 5-HT6R activity of the cell line; and a step of selecting test chemical which increases or decreases 5-HT6R in the cell line.
Abstract:
A high-throughput screening(HTS) method for a 5-HT6 receptor ligand s provided to develop a selective controlling material of the 5-HT6 receptor and shorten a target protein identifying period by overcoming the defects of a conventional radio isotope technique or a non-reproducible HTS technique, thereby capable of finding an accurate mechanism of the 5-HT6 receptor and being very useful for preventing and treating brain diseases such as melancholia, cognitive impairment, and Alzheimer's disease. A high-throughput screening method for an active agent of a 5-HT6 receptor such as 5-HT, 5-CT, methoxytryptamine and tryptamine comprises the steps of: (a) transfecting the 5-HT6 receptor and a chimeric G-protein and then selecting a cell line such as HEK293, COS7, CHO-K1 and CHO-G5A and a G-protein for searching an optimum ligand through condition comparison tests; (b) introducing the selected cell line into a 96-well plate under the condition of transfecting the 5-HT6 receptor and the G-protein into DMEM(Dulbecco's modified Eagle's medium) and labeling it with a tracer dye; (c) after preparing a 96-well plate including a 5-HT6 receptor active agent with a concentration capable of activating the 5-HT6 receptor and a 96-well plate only including buffer, obtaining a Z'(signal window) value using a Ca^2+ signal regarding each of the 96-well plate including the 5-HT6 receptor active agent and the 96-well plate including buffer and determining the screening efficiency regarding the 5-HT6 receptor; and (d) after preparing 96-well plates including a 5-HT6 receptor active agent with different concentrations for activating the 5-HT6 receptor and obtaining a Ca^2+ signal in accordance with the 5-HT6 receptor activity through a fluorescent imaging technique, drawing a graph about the reaction regarding the active agent and obtaining an EC50 value of a testing material from the graph to search the active agent of the 5-HT6 receptor.
Abstract:
PURPOSE: A cell line expressing HA-5-HT6R and a method for detecting serotonin 6 receptor ligand are provided to enhance detection efficiency and to diagnose and treat brain diseases such as depression and Alzheimer. CONSTITUTION: A cell line which stably expresses HA-5-HT6R is prepared by transducing a vector containing a 5-HT6R gene construct connected with HA(hemagglutinin) to host cells. The cell line is deposited in a deposit number KCLRF-BP-00187. The host cells are HEK293, COS7, CHO-K1 or CHO-G5A. A method for detecting 5-HT6R ligand at high efficiency comprises: a step of treating a test compound to cell line which stably expressing HA-5-HT6R; a step of measuring 5-HT6R activity of treated cell line; and a step of selecting test compound which increases or decreases 5-HT6R activity in the cell line comparing to untreated cell line.
Abstract:
본 발명은 형광 이미징법을 이용한 5-HT 6 수용체 리간드 고효율 검색방법에 관한 것으로서, 더욱 상세하게는 기존의 방사선 동위원소법이나 재현성이 없는 형광이미징법의 5-HT 6 수용체 리간드 검색방법의 단점을 극복하여 96-웰 플레이트 형태로 형광 이미징법을 이용한 5-HT 6 수용체 리간드 고효율 검색법(high-throughput screening, HTS)과, YTH(yeast two-hybrid) 검색법을 이용한 5-HT 6 수용체에 결합하는 Fyn 단백질 발견을 통한 Fyn 단백질이 5-HT 6 수용체의 기능을 증가시킴을 HTS의 활용법에 관한 것이다. 따라서, 본 발명은 우울증, 인지 기능, 알츠하이머 병 등과 관련된 뇌질환의 예방 및 치료에 유용하다. 5-HT6 수용체, 형광 이미징법, 고효율 검색법, YTH(yeast two-hybrid) 검색법, Fyn 단백질