Kowa Company Limited

Yushi Saino

Akio Iwasaki

Hiroshi Nakao

Takao Nagoya

Takeshi Doi

Masao Ohkuchi

Makoto Suda

Shigeru Kimura

Masahiro Maki

Hideo Tani

A polypeptide having a specific amino acid sequence is described. Also described are a novel DNA coding the polypeptide, a recombinant plasmid containing the DNA, a transformant containing the recombinant plasmid, an anticoagulant containing the polypeptide as an effective ingredient, and a process for the production of the polypeptide.

Nucleic acids encoding human placental coagulation inhibitor (PCI)

Therapeutic agent for skin or corneal disease

Thrombin-binding substances capable of promoting anti-thrombin III activity and inhibiting platelet aggregation, and by themselves possessing anti-thrombin activity are disclosed. The thrombin-binding substances are useful as an effective component of anticoagulant agents, and can be produced inexpensively on a large scale.

DNA encoding a human thrombomodulin having a modified glycosaminoglycan

A monoclonal antibody specific to a human placenta-derived coagulation inhibitor is disclosed. The antibody is produced by culturing a hybridoma which secretes it. A human placenta-derived coagulation inhibitor can be purified by using the monoclonal antibody as an immunoadsorbent. The human placenta-derived coagulation inhibitor can be immunologically assayed by using the monoclonal antibodies.

Placenta-derived coagulation inhibitor

Recombinant thrombin-binding substances, derived from thrombomodulin by modification of the c-terminal glycosaminoglycan (GAG) binding site and capable of promoting anti-thrombin III activity and inhibiting platelet aggregation, and by themselves possessing anti-thrombin activity are disclosed. The thrombin-binding substances are useful as an effective component of anticoagulant agents, and can be produced inexpensively in a large scale.

Human urinary thrombomodulin with a modified glycosaminoglycan (GAG)

Anti-PCI monoclonal antibody

A polypeptide having an amino acid sequence as shown in FIG. 1 and its preparation method are disclosed. A DNA fragment capable of coding CPBII polypeptide (human placenta-derived coagulation inhibitor) is first obtained from the human placental cDNA library by using a CPBII-specific antibody as a probe. Then, microorganism cells are transformed by the use of a recombinant plasmid incorporated with the DNA fragment, allowing the resultant transformant to express the CPBII gene, to finally obtain a CPBII-like polypeptide. The polypeptide of this invention exhibits strong anticoagulation activities, and useful for an active component of anticoagulation medicines and preventin in vivo blood coagulation.

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Tokyo, Japan

Yushi Saino