1.一種含有式Ⅰ(SEQ.ID NO:1)結(jié)構(gòu)的非洲爪蟾胰高血糖素樣肽-1(GLP-1)類似物;其特征在于其結(jié)構(gòu)為以下形式:
His-Xaa1-Glu-Gly-Thr-Tyr-Thr-Asn-Asp-Val-Xaa2-Xaa3-Xaa4-Xaa5-Xaa6-Xaa7-Xaa8-Xaa9-Xaa10-Xaa11-Xaa12-Xaa13-Xaa14-Xaa15-Xaa16-Xaa17-Xaa18-Xaa19-Xaa20-Xaa21
(SEQ.ID NO:1)
其中:
Xaa1:Ala,Leu,Val,Met,Ile,Tyr,Phe,Arg,Asn,Lys,Thr,Asp,His,Trp,Gln,Glu,Ser或Gly;
Xaa2:Cys(S-PEG anolog),或Thr;
Xaa3:Cys(S-PEG anolog),或Glu;
Xaa4:Cys(S-PEG anolog),或Tyr;
Xaa5:Cys(S-PEG anolog),或Leu;
Xaa6:Cys(S-PEG anolog),或Glu;
Xaa7:Cys(S-PEG anolog),或Glu;
Xaa8:Cys(S-PEG anolog),或Lys;
Xaa9:Cys(S-PEG anolog),或Ala;
Xaa10:Cys(S-PEG anolog),或Ala;
Xaa11:Cys(S-PEG anolog),或Lys;
Xaa12:Cys(S-PEG anolog),或Glu;
Xaa13:Cys(S-PEG anolog),或Phe;
Xaa14:Cys(S-PEG anolog),或Ile;
Xaa15:Cys(S-PEG anolog),或Glu;
Xaa16:Cys(S-PEG anolog),或Trp;
Xaa17:Cys(S-PEG anolog),或Leu;
Xaa18:Cys(S-PEG anolog),或Ile;
Xaa19:Cys(S-PEG anolog),或Lys;
Xaa20:Cys(S-PEG anolog),或Gly;
Xaa21:Cys(S-PEG anolog)-NH2,或Lys-NH2;
前提是所述序列不是His-Xaa1-Glu-Gly-Thr-Tyr-Thr-Asn-Asp-Val-Thr-Glu-Tyr-Leu-Glu-Glu-Lys-Ala-Ala-Lys-Glu-Phe-Ile-Glu-Trp-Leu-Ile-Lys-Gly-Lys-NH2。
2.根據(jù)權(quán)利要求1所述的肽,其中Cys(S-PEG anolog)選自
這里:n選自30~80。
3.根據(jù)權(quán)利要求2所述的化合物,其中優(yōu)選的S-PEG anolog的分子量為~2000。
4.根據(jù)權(quán)利要求1-3所述的非洲爪蟾胰高血糖素樣肽-1(GLP-1)類似物,優(yōu)選的序列為:
His-Gly-Glu-Gly-Thr-Tyr-Thr-Asn-Asp-Val-Cys(S-PEG anolog)-Glu-Tyr-Leu-Glu-Glu-Lys-Ala-Ala-Lys-Glu-Phe-Ile-Glu-Trp-Leu-Ile-Lys-Gly-Lys-NH2(SEQ.ID NO:2);
His-Gly-Glu-Gly-Thr-Tyr-Thr-Asn-Asp-Val-Thr-Cys(S-PEG anolog)-Tyr-Leu-Glu-Glu-Lys-Ala-Ala-Lys-Glu-Phe-Ile-Glu-Trp-Leu-Ile-Lys-Gly-Lys-NH2(SEQ.ID NO:3);
His-Gly-Glu-Gly-Thr-Tyr-Thr-Asn-Asp-Val-Thr-Glu-Cys(S-PEG anolog)-Leu-Glu-Glu-Lys-Ala-Ala-Lys-Glu-Phe-Ile-Glu-Trp-Leu-Ile-Lys-Gly-Lys-NH2(SEQ.ID NO:4);
His-Gly-Glu-Gly-Thr-Tyr-Thr-Asn-Asp-Val-Thr-Glu-Tyr-Cys(S-PEG anolog)-Glu-Glu-Lys-Ala-Ala-Lys-Glu-Phe-Ile-Glu-Trp-Leu-Ile-Lys-Gly-Lys-NH2(SEQ.ID NO:5);
His-Gly-Glu-Gly-Thr-Tyr-Thr-Asn-Asp-Val-Thr-Glu-Tyr-Leu-Glu-Glu-Cys(S-PEG anolog)-Ala-Ala-Lys-Glu-Phe-Ile-Glu-Trp-Leu-Ile-Lys-Gly-Lys-NH2(SEQ.ID NO:6);
His-Gly-Glu-Gly-Thr-Tyr-Thr-Asn-Asp-Val-Thr-Glu-Tyr-Leu-Glu-Glu-Lys-Cys(S-PEG anolog)-Ala-Lys-Glu-Phe-Ile-Glu-Trp-Leu-Ile-Lys-Gly-Lys-NH2(SEQ.ID NO:7);
His-Gly-Glu-Gly-Thr-Tyr-Thr-Asn-Asp-Val-Thr-Glu-Tyr-Leu-Glu-Glu-Lys-Ala-Cys(S-PEG anolog)-Lys-Glu-Phe-Ile-Glu-Trp-Leu-Ile-Lys-Gly-Lys-NH2(SEQ.ID NO:8);
His-Gly-Glu-Gly-Thr-Tyr-Thr-Asn-Asp-Val-Thr-Glu-Tyr-Leu-Glu-Glu-Lys-Ala-Ala-Lys-Glu-Phe-Cys(S-PEG anolog)-Glu-Trp-Leu-Ile-Lys-Gly-Lys-NH2(SEQ.ID NO:9);
His-Gly-Glu-Gly-Thr-Tyr-Thr-Asn-Asp-Val-Thr-Glu-Tyr-Leu-Glu-Glu-Lys-Ala-Ala-Lys-Glu-Phe-I le-Glu-Trp-Cys(S-PEG anolog)-Ile-Lys-Gly-Lys-NH2(SEQ.ID NO:10);
His-Gly-Glu-Gly-Thr-Tyr-Thr-Asn-Asp-Val-Thr-Glu-Tyr-Leu-Glu-Glu-Lys-Ala-Ala-Lys-Glu-Phe-I le-Glu-Trp-Leu-Ile-Lys-Gly-Cys(S-PEG anolog)-NH2(SEQ.ID NO:11)。
5.一種藥物組合物,包括治療有效量的權(quán)利要求1中所述的非洲爪蟾胰高血糖素樣肽-1(GLP-1)類似物或者其藥學(xué)上可接受的鹽和藥學(xué)上可接受的載體或稀釋劑。
6.權(quán)利要求1中所述的非洲爪蟾胰高血糖素樣肽-1(GLP-1)類似物或者其藥學(xué)上可接受的鹽和藥學(xué)上可接受的載體或稀釋劑在制備用于糖尿病和肥胖的藥物中的運(yùn)用。
7.權(quán)利要求1中所述的非洲爪蟾胰高血糖素樣肽-1(GLP-1)類似物的制備方法,包括生物表達(dá)、液相合成和固相合成制備方法。
8.一種非洲爪蟾胰高血糖素樣肽-1(GLP-1)類似物的合成方法,其特征是將mPEG2000-MAL用甲醇/水(v/v=1:1,pH 7.0)溶解,加入等摩爾的半胱氨酸改構(gòu)的非洲爪蟾胰高血糖素樣肽-1(GLP-1)類似物,室溫下攪拌反應(yīng),反應(yīng)結(jié)束后,反應(yīng)液直接進(jìn)制備液相色譜純化,凍干得純品。