公开(公告)号：US20190241584A1

公开(公告)日：2019-08-08

申请号：US16318762

申请日：2017-07-18

Applicant: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Linyong Zhu ,  Yi Yang ,  Dasheng Zhang ,  Zengmin Du ,  Bingkun Bao ,  Qiuning Lin ,  Yan Li ,  Xianjun Chen ,  Lipeng Yang ,  Chunyan Bao

IPC: C07D495/04 ,  C07D333/78 ,  C07D495/14 ,  C09B57/00 ,  G01N33/68 ,  C12Q1/68 ,  G01N33/533 ,  C09B23/04 ,  C09B23/01

CPC classification number: C07D495/04 ,  A61K49/00 ,  C07D333/60 ,  C07D333/78 ,  C07D495/14 ,  C09B23/0058 ,  C09B23/0091 ,  C09B23/04 ,  C09B57/00 ,  C09K11/06 ,  C12Q1/68 ,  G01N33/533 ,  G01N33/68

Abstract: Provided are a fluorescent dye and a preparation process and use thereof. The fluorescent dye is able to emit a long wavelength, is sensitive and specific to viscosity, and is used for a wide range of purposes, such as viscosity testing, fluorescent labeling, quantification or detection of proteins, enzymes or nucleic acids. In addition, it can be used as a fluorescent-activated probe.

公开(公告)号：US09606121B2

公开(公告)日：2017-03-28

申请号：US14347575

申请日：2012-09-26

Applicant: East China University of Science and Technology

Inventor： Yi Yang ,  Yuzheng Zhao ,  Jing Jin ,  Qingxun Hu

IPC: G01N33/573 ,  C07K14/195 ,  C07K14/32 ,  G01N33/50 ,  G01N33/58

CPC classification number: G01N33/5735 ,  C07K14/195 ,  C07K14/32 ,  C07K2319/00 ,  C07K2319/60 ,  G01N33/5011 ,  G01N33/582 ,  G01N2500/02 ,  G01N2800/7028

Abstract: The invention relates to a genetically encoded fluorescent sensor for nicotinamide adenine dinucleotide, as well as methods of preparation and uses thereof. In one aspect, this invention relates to a sensor for detecting nicotinamide adenine dinucleotide, particularly, a recombinant fluorescent fusion protein sensor for detecting nicotinamide adenine dinucleotide. In one specific aspect, this invention relates to a recombinant fluorescent fusion protein sensor for detecting reduced nicotinamide adenine dinucleotide (NADH); in another specific aspect, this invention relates to a recombinant fluorescent fusion protein sensor for detecting oxidized nicotinamide adenine dinucleotide (NAD+); in yet another aspect, the invention relates to a recombinant fluorescent fusion protein sensor for detecting the ratio of reduced to oxidized nicotinamide adenine dinucleotide. This invention also relates to the method of preparing the sensors, and uses of the sensors in detecting NADH, NAD+, NADH/NAD+ ratio, screening drugs and measuring NADH metabolism.

公开(公告)号：US20240027344A1

公开(公告)日：2024-01-25

申请号：US16981088

申请日：2019-03-15

Applicant: East China University of Science and Technology

Inventor： Yi Yang ,  Yuzheng Zhao ,  Xie Li ,  Yejun Zou ,  Changcheng Zhang

IPC: G01N21/64

CPC classification number: G01N21/6428

Abstract: The disclosure provides a fluorescent sensor, comprising a) a responsive polypeptide, and b) an optically active polypeptide, wherein the optically active polypeptide is inserted into the responsive polypeptide. The present disclosure also relates to a nucleic acid sequence encoding the fluorescent sensor according to any embodiment, or a complementary sequence thereof. The disclosure also provides an expression vector comprising the nucleic acid sequence or a complementary sequence thereof of the disclosure operably linked to an expression control sequence. The disclosure also provides a cell containing the expression vector of the disclosure. The present disclosure also provides a method for preparing the fluorescent sensor of this disclosure, comprising the following steps: providing a host cell comprising an expression vector that expresses the fluorescent sensor of the disclosure, culturing the host cell under conditions suitable for the expression of the host cell, and separating the fluorescent sensor. The disclosure also provides uses of the fluorescent sensor described in the disclosure or the fluorescent sensor prepared according to the method of the disclosure in detecting BCAAs. In one embodiment, the branched chain amino acids are selected from leucine, isoleucine and valine. The detection can be conducted in vitro, in vivo, in situ, or at subcellular level. The disclosure also provides a kit, comprising the fluorescent sensor described in the disclosure or the fluorescent sensor prepared according to the method of the disclosure.