Ajinomoto Co., Ltd.

Other

Kazuo Sugamura

Toshikazu Takeshita

Junji Hamuro

Toshiro Shimamura

Manabu Suzuki

Hironobu Asao

Masataka Nakamura

Harumi Nakazawa

Yuka Kanayama

The present invention relates to an IL-2 receptor .gamma. chain molecule, a DNA-sequence encoding the IL-2 receptor .gamma. chain molecule, a vector possessing said DNA-sequence, a cell transformed with said vector, a method for the production of an IL-2 receptor .gamma. chain molecule by culturing of said cell, an immune response regulatory agent comprising an IL-2 receptor .gamma. chain molecule and an antibody to an IL-2 receptor .gamma. chain molecule.

Human IL-2 receptor .gamma.-chain molecule antibody

A polypeptide which specifically binds to the .gamma.-chain of the human interleukin-2 receptor and selectively inhibits the binding of the .gamma.-chain of human interleukin-2 receptor to the .beta.-chain of the same is provided. The polypeptide has an activity of blocking the human interleukin-2 response. Also provided are an immunosuppressant containing the polypeptide, a DNA gene coding for the polypeptide, a recombinant DNA having the gene, a transformant having the recombinant DNA, and a method for producing the intended polypeptide by incubating the transformant. The novel polypeptide can be used independently, or with substances capable of inhibiting the binding of interleukin-2 to the interleukin-2 receptor, as a medicine for preventing the rejection of grafts after transplantation and also for curing inflammatory diseases such as allergic diseases and autoimmune diseases.

.gamma.-chain humaninterleukin-2 receptor polypeptide and method of

The present invention relates to an IL-2 receptor .gamma. chain molecule, a DNA-sequence encoding the IL-2 receptor .gamma. chain molecule, a vector possessing said DNA-sequence, a cell transformed with said vector, a method for the production of an IL-2 receptor .gamma. chain molecule by culturing of said cell, an immune response regulatory agent comprising an Il-2 receptor .gamma. chain molecule and an antibody to an IL-2 receptor .gamma. chain molecule. Both the Il-2 receptor .gamma. chain molecule and the antibody to the IL-2 receptor .gamma. chain molecule are very useful immune response regulatory agents.

Human IL-2 receptor .gamma. chain molecule

Monoclonal antibodies which bind the gamma chain of human interleukin-2

Growing community of inventors

Sendai, Japan

Toshikazu Takeshita