シクロスポリン

解説かび由来の環状ペプチドで，免疫抑制作用がある．森北出版「化学辞典（第2版）

用途シクロスポリン（Ciclosporin（INN?BAN（英語版））またはサイクロスポリン（Cyclosporine（USAN）、Cyclosporin（旧BAN））とは、真菌が産生する環状ポリペプチド抗生物質の一つである。D-アミノ酸を1つ含む11のアミノ酸からなる。 Tリンパ球によるインターロイキン-2,4,5,13やインターフェロン-γなどのサイトカイン転写を特異的かつ可逆的に抑制し、ひいてはサイトカイン産生と遊離を抑制する。これはカルシニューリンによる細胞内情報伝達阻害による。臓器移植による拒絶反応の抑制や自己免疫疾患の治療に使用される。

用途11 個のアミノ酸から成る環 状ポリペプチドです、免疫反応を促すヘル パー T 細胞からのインターロイキン 2 の分泌 を阻害して免疫抑制作用を示します。

説明Cyclosporine A is a powerful immunosuppressive drug intended for preventing rejection of kidney, heart, and lung transplants. A new era in the development of immunopharmacology began with the discovery of cyclosporines. Cyclosporines are produced by mycelial mushrooms Tolypocladium inflatum, Tricoderma polysporum, and Cylindrocarpon lucidum, which are found in the ground.Cyclosporine A is the first drug to affect a specific line of protecting cells of the body. Unlike usual cytotoxics, it suppresses T-cells and acts on all cell lines simultaneously. Cyclosporine A significantly eases the ‘reception’ of transplants, and increases the possibility of treating autoimmune system diseases.

使用Cyclosporin A is a hydrophobic cyclic peptide isolated from several fungal species including Cylindrocarpon, Fusarium, Trichoderma and Tolypocladium. Cyclosporin A inhibits T-cell activation and has been marketed since 1983 as an immunosuppressant in post-allogeneic organ transplant. Cyclosporin A acts by binding to the protein, cyclophilin (immunophilin), in T-lymphocytes causing inhibition of calcineurin (protein phosphatase 2B). Cyclosporin A reduces transcription of interleukin 2, and inhibits lymphokine production, interleukin release and NO synthesis induced by interleukin 1α, lipopolysaccharides and TNFα.

一般的な説明White prismatic needles (from acetone) or white powder.

定義ChEBI: A cyclic nonribosomal peptide of eleven amino acids; an immunosuppressant drug widely used in post-allogeneic organ transplant to reduce the activity of the patient's immune system, and therefore the risk of organ rejection. Also causes reversible inhibiti n of immunocompetent lymphocytes in the G0- and G1-phase of the cell cycle.