Takeda Chemical Industries, Inc.

Takeda Pharmaceutical Company Limited

Yoshio Taniyama

Ryuichi Tozawa

Ryuji M Marumoto

Naoki Yamamoto

Eiji Sunahara

Mitsugu Nakata

Tomoko Satomi

Yoshitaka Yasuhara

Shunbun Kita

Takumi Hamana

The present invention relates to non-human animal embryonic stem cells in which a lecithin:cholesterol acyltransferase-like lysophospholipase endogenous gene is inactivated; non-human animals deficient in expression of LLPL gene; methods of screening for prophylactics and/or therapeutic drug using the cells or the animals; and prophylactics and/or therapeutic drug obtainable by the screening. The non-human animal ES cells of the invention in which their LLPL gene is inactivated are very useful in creating non-human animals deficient in expression of LLPL gene. The LLPL expression deficient non-human animals of the invention can be disease models for such diseases caused by insufficiency of the biological activities of LLPL since the animals lack various biological activities inducible by LLPL. Therefore, the animals of the invention are useful in screening for prophylactics and/or therapeutic drug for various diseases resulting from LLPL deficiency, as well as in elucidating the causes of LLPL-related diseases and examining therapeutic methods for such diseases. The screening methods of the invention are capable of efficiently screening for prophylactics and/or therapeutic drug for various diseases resulting from LLPL deficiency.

Animal with gene hypoexpression

The present invention provides novel esterase proteins, Specifically, the present invention provides proteins having the same or substantially the same amino acid sequence as the amino acid sequence represented by SEQ ID NO: 1 or SEQ ID NO: 7, or salts thereof; their partial peptides or salts thereof: DNAs encoding the proteins; recombinant vectors containing the DNAs; transformants, a method of manufacturing the proteins; pharmaceuticals comprising the proteins or DNAs; antibodies to the proteins; a method of screening compounds or salts thereof having an activity of promoting the esterase activity of the proteins; the compounds obtained by the screening; and pharmaceuticals comprising the said compounds; etc.

Isolated human protein having esterase activity and DNA encoding the same

This invention relates to a novel protein having a lecithin-cholesterol acyltransferase-like activity, etc. or its salt, a precursor protein of the protein or its salt, a partial peptide of the protein or its salt; a DNA coding for the protein; a recombinant vector; a transformant; a method for producing the protein, a pharmaceutical composition comprising the protein, the partial peptide or its salt; and an antibody to the protein or the partial peptide. The protein, the partial peptide or its salt, and the DNA are useful as an agent for treating or preventing arteriosclerosis, atherosclerosis, hyperlipidemia, hypercalorism, obesity or hypertriglyceridemia. The antibody can be used in assay of the protein, the partial peptide or its salt. The protein, the partial peptide or its salt is useful as a reagent for the screening for candidate medical compounds.

Murine lecithin-cholesterol acyltransferase protein

It is intended to construct a screening method, etc. for searching for compounds which are capable of binding to apolipoprotein A-I and thus promote or inhibit the binding of a cubulin fragment to apolipoprotein A-I, and provide preventives or remedies containing compounds obtained by the above screening method, etc. These compounds, etc. are usable in preventives and remedies for various diseases in which cubulin participates and the like.

Polypeptide and its DNA

Lecithin-cholesterol acyltransferase protein

A compound of the formula: ##STR1## wherein R is a hydroxyl group which may be protected and Y is a purine base which may be protected, and the saltts thereof, which are useful as an antiviral agent.

Growing community of inventors

Tsukuba, Japan

Yoshio Taniyama