申请人:SPOFA, spojene podniky pro zdravotnickouvyrobu
公开号:US04711952A1
公开(公告)日:1987-12-08
Novel peptide analogs of the serum thymic factor are disclosed, structurally modified, in comparison with the natural substance, both in their N-terminal and C-terminal parts and inside the amino-acid sequence, corresponding to the general formula I A-Gly-Gly-Ser-Asn-B-C-NH-R (I), in which A is pGlu, Gln, Ala-Lys-Ser-Gln, pGlu-Ala-Lys-Ser-Gln or Gln-Ala-Lys-Ser-Gln, B and C are Gly, Phe, Leu, Ala or a direct bond, and R is H, an alkyl with 1 to 6 carbon atoms or a 2-phenylethyl. Depending upon their chemical structure, the subject thymic factor analogs possess either agonistic (immunostimulative) or antagonistic (immunosuppressory) properties.
本发明揭示了血清胸腺因子的新型肽类类似物,与天然物相比,在其N末端、C末端和氨基酸序列内部进行了结构修改,其通用公式为I A-Gly-Gly-Ser-Asn-B-C-NH-R(I),其中A为pGlu,Gln,Ala-Lys-Ser-Gln,pGlu-Ala-Lys-Ser-Gln或Gln-Ala-Lys-Ser-Gln,B和C为Gly,Phe,Leu,Ala或直接键,R为H,具有1至6个碳原子的烷基或2-苯乙基。根据它们的化学结构,该胸腺因子类似物具有激动(免疫刺激)或拮抗(免疫抑制)的性质。