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LHRH 激動(dòng)劑用于治療前列腺癌。曲普瑞林減少 LH 和 FSH 的分泌。CAS號(hào)(醋酸曲普瑞林)140194-24-7。
編號(hào):152468
CAS號(hào):57773-63-4/140194-24-7/124508-66-3
單字母:Pyr-HWSYwLRPG-CONH2
LHRH agonist used in the treatment of prostate cancer. Triptorelin decreases the secretion of LH and FSH. CAS-number (triptorelin acetate) 140194-24-7.
很多蛋白在細(xì)胞中非常容易被降解,或被標(biāo)記,進(jìn)而被選擇性地破壞。但含有部分D型氨基酸的多肽則顯示了很強(qiáng)的抵抗蛋白酶降解能力。
DOI | 名稱 | |
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10.1006/gyno.2000.5863 | Luteinizing hormone-releasing hormone agonist triptorelin and antagonist cetrorelix inhibit EGF-induced c-fos expression in human gynecological cancers | 下載 |
10.1530/eje.0.1510141 | Antiproliferative effects of the GnRH antagonist cetrorelix and of GnRH-II on human endometrial and ovarian cancer cells are not mediated through the GnRH type I receptor | 下載 |
10.1158/0008-5472.CAN-06-3222 | Gonadotropin-releasing hormone type II antagonists induce apoptotic cell death in human endometrial and ovarian cancer cells in vitro and in vivo | 下載 |
10.1021/bc500081g | GnRH-Gemcitabine conjugates for the treatment of androgen-independent prostate cancer: pharmacokinetic enhancements combined with targeted drug delivery | 下載 |
10.1136/bmj.291.6506.1387 | Importance of early tumour exacerbation in patients treated with long acting analogues of gonadotrophin releasing hormone for advanced prostatic cancer | 下載 |
10.1016/0196-9781(85)90333-x | Effects of in vivo pretreatment with D-Trp-6-LH-RH on prolactin and LH secretion by pituitary glands in vitro | 下載 |
10.1016/0167-0115(86)90216-8 | Radioimmunoassay of [D-Trp6]-luteinizing hormone-releasing hormone: its application to animal pharmacokinetic studies after single injection and long-acting formulation administration | 下載 |
10.1073/pnas.82.5.1547 | Radioimmunoassay for 6-D-tryptophan analog of luteinizing hormone-releasing hormone: measurement of serum levels after administration of long-acting microcapsule formulations | 下載 |
10.1073/pnas.82.8.2498 | Combination of long-acting microcapsules of the D-tryptophan-6 analog of luteinizing hormone-releasing hormone with chemotherapy: investigation in the rat prostate cancer model | 下載 |
10.1210/endo-116-6-2227 | D-Trp-6-luteinizing hormone-releasing hormone inhibits hyperprolactinemia in female rats | 下載 |
多肽Pyr-His-Trp-Ser-Tyr-DTrp-Leu-Arg-Pro-Gly-NH2的合成步驟:
1、合成MBHA樹脂:取若干克MBHA樹脂(如初始取代度為0.5mmol/g)和1倍樹脂摩爾量的Fmoc-Linker-OH加入到反應(yīng)器中,加入DMF,攪拌使氨基酸完全溶解。再加入樹脂2倍量的DIEPA,攪拌混合均勻。再加入樹脂0.95倍量的HBTU,攪拌混合均勻。反應(yīng)3-4小時(shí)后,用DMF洗滌3次。用2倍樹脂體積的10%乙酸酐/DMF 進(jìn)行封端30分鐘。然后再用DMF洗滌3次,甲醇洗滌2次,DCM洗滌2次,再用甲醇洗滌2次。真空干燥12小時(shí)以上,得到干燥的樹脂{Fmoc-Linker-MHBA Resin},測定取代度。這里測得取代度為 0.3mmol/g。結(jié)構(gòu)如下圖:
2、脫Fmoc:取1.42g的上述樹脂,用DCM或DMF溶脹20分鐘。用DMF洗滌2遍。加3倍樹脂體積的20%Pip/DMF溶液,鼓氮?dú)?0分鐘,然后2倍樹脂體積的DMF 洗滌5次。得到 H2N-Linker-MBHA Resin 。(此步驟脫除Fmoc基團(tuán),茚三酮檢測為藍(lán)色,Pip為哌啶)。結(jié)構(gòu)圖如下:
3、縮合:取1.28mmol Fmoc-Gly-OH 氨基酸,加入到上述樹脂里,加適當(dāng)DMF溶解氨基酸,再依次加入2.56mmol DIPEA,1.21mmol HBTU。反應(yīng)30分鐘后,取小樣洗滌,茚三酮檢測為無色。用2倍樹脂體積的DMF 洗滌3次樹脂。(洗滌樹脂,去掉殘留溶劑,為下一步反應(yīng)做準(zhǔn)備)。得到Fmoc-Gly-Linker-MBHA Resin。氨基酸:DIPEA:HBTU:樹脂=3:6:2.85:1(摩爾比)。結(jié)構(gòu)圖如下:
4、依次循環(huán)步驟二、步驟三,依次得到
H2N-Gly-Linker-MBHA Resin
Fmoc-Pro-Gly-Linker-MBHA Resin
H2N-Pro-Gly-Linker-MBHA Resin
Fmoc-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
H2N-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
Fmoc-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
H2N-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
Fmoc-DTrp(Boc)-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
H2N-DTrp(Boc)-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
Fmoc-Tyr(tBu)-DTrp(Boc)-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
H2N-Tyr(tBu)-DTrp(Boc)-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
Fmoc-Ser(tBu)-Tyr(tBu)-DTrp(Boc)-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
H2N-Ser(tBu)-Tyr(tBu)-DTrp(Boc)-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
Fmoc-Trp(Boc)-Ser(tBu)-Tyr(tBu)-DTrp(Boc)-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
H2N-Trp(Boc)-Ser(tBu)-Tyr(tBu)-DTrp(Boc)-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
Fmoc-His(Trt)-Trp(Boc)-Ser(tBu)-Tyr(tBu)-DTrp(Boc)-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin
以上中間結(jié)構(gòu),均可在專肽生物多肽計(jì)算器-多肽結(jié)構(gòu)計(jì)算器中,一鍵畫出。
最后再經(jīng)過步驟二得到 H2N-His(Trt)-Trp(Boc)-Ser(tBu)-Tyr(tBu)-DTrp(Boc)-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHA Resin,結(jié)構(gòu)如下:
5、焦谷氨酸反應(yīng)連接:在上述樹脂中,加入適當(dāng)DMF后,再加入1.28mmol 焦谷氨酸到樹脂中,再加入2.56mmol DIPEA、1.21mmol HBTU,鼓氮?dú)夥磻?yīng)30分鐘。用2倍樹脂體積的DMF 洗滌3次樹脂(洗滌樹脂,去掉殘留溶劑,為下一步反應(yīng)做準(zhǔn)備)。 得到Pyr-His(Trt)-Trp(Boc)-Ser(tBu)-Tyr(tBu)-DTrp(Boc)-Leu-Arg(Pbf)-Pro-Gly-Linker-MBHAResin。 結(jié)構(gòu)如下:
5、切割:6倍樹脂體積的切割液(或每1g樹脂加8ml左右的切割液),搖床搖晃 2小時(shí),過濾掉樹脂,用冰無水乙醚沉淀濾液,并用冰無水乙醚洗滌沉淀物3次,最后將沉淀物放真空干燥釜中,常溫干燥24小試,得到粗品Pyr-His-Trp-Ser-Tyr-DTrp-Leu-Arg-Pro-Gly-NH2。結(jié)構(gòu)圖見產(chǎn)品結(jié)構(gòu)圖。
切割液選擇:1)TFA:H2O=95%:5%
2)TFA:H2O:TIS=95%:2.5%:2.5%
3)三氟乙酸:茴香硫醚:1,2-乙二硫醇:苯酚:水=87.5%:5%:2.5%:2.5%:2.5%
(前兩種適合沒有容易氧化的氨基酸,例如Trp、Cys、Met。第三種適合幾乎所有的序列。)
6、純化凍干:使用液相色譜純化,收集目標(biāo)峰液體,進(jìn)行凍干,獲得蓬松的粉末狀固體多肽。不過這時(shí)要取小樣復(fù)測下純度 是否目標(biāo)純度。
7、最后總結(jié):
杭州專肽生物技術(shù)有限公司(ALLPEPTIDE http://amynixphotography.com)主營定制多肽合成業(yè)務(wù),提供各類長肽,短肽,環(huán)肽,提供各類修飾肽,如:熒光標(biāo)記修飾(CY3、CY5、CY5.5、CY7、FAM、FITC、Rhodamine B、TAMRA等),功能基團(tuán)修飾肽(疊氮、炔基、DBCO、DOTA、NOTA等),同位素標(biāo)記肽(N15、C13),訂書肽(Stapled Peptide),脂肪酸修飾肽(Pal、Myr、Ste),磷酸化修飾肽(P-Ser、P-Thr、P-Tyr),環(huán)肽(酰胺鍵環(huán)肽、一對(duì)或者多對(duì)二硫鍵環(huán)),生物素標(biāo)記肽,PEG修飾肽,甲基化修飾肽
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