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87616-84-0,生长激素释放肽-6/六肽-2、GHRP-6/Hexapeptide-2,H2N-His-DTrp-Ala-Trp-DPhe-Lys-NH2,H2N-H-DTrp-AW-DPhe-K-NH2,杭州专肽生物的产品

生长激素释放肽-6/六肽-2、GHRP-6/Hexapeptide-2

α-MSH的拮抗剂,降低黑色素的合成,诱导表皮细胞中的黑色素含量减少

编号:160658

CAS号:87616-84-0

单字母:H2N-HwAWfK-CONH2

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  • 编号:160658
    中文名称:生长激素释放肽-6/六肽-2、GHRP-6/Hexapeptide-2
    中文同义词:醋酸生长激素释放肽-6;生长激素释放肽-6;醋酸生长激素释放肽-6GHRP-6ACETATE;醋酸生长激素释放肽-68Chemicalbook7616-84-0;生长激素释放肽-6醋酸生长激素释放肽-6;六肽-2/GHRP-6;六肽-2/GHRP-6/寡肽-24
    英文名:GHRP-6/Hexapeptide-2
    CAS号:87616-84-0
    单字母:H2N-HwAWfK-CONH2
    三字母:H2N

    N端氨基:N-terminal amino group。在肽或多肽链中含有游离a-氨基的氨基酸一端。在表示氨基酸序列时,通常将N端放在肽链的左边。

    -His

    L-组氨酸:histidine。系统命名为(2S)-氨基-3-(4-咪唑基)丙酸。其侧链带有弱碱性的咪唑基,为编码氨基酸。是幼小哺乳动物的必需氨基酸。符号:H,His。

    -DTrp

    D型色氨酸

    -Ala

    丙氨酸:alanine。L-丙氨酸的系统命名为(2S)-氨基丙酸,是编码氨基酸,也叫L-α-丙氨酸。符号:A,Ala。D-丙氨酸存在于多种细菌细胞壁的糖肽中。β-丙氨酸是维生素泛酸和辅酶A的组分。

    -Trp

    L-色氨酸:tryptophan[e]。系统命名为(2S)-氨基-3-(3-吲哚基)丙酸。是编码氨基酸,哺乳动物的必需氨基酸。符号:W,Trp。某些抗菌素中含有 D-色氨酸。

    -DPhe

    D型笨丙氨酸

    -Lys

    L-赖氨酸:lysine。系统命名为(2S)-6-二氨基已酸。是编码氨基酸中的碱性氨基酸,哺乳动物的必需氨基酸。在蛋白质中的赖氨酸可以被修饰为多种形式的衍生物。符号:K,Lys。

    -CONH2

    C端酰胺化

    氨基酸个数:6
    分子式:C46H56N12O6
    平均分子量:873.01
    精确分子量:872.44
    等电点(PI):-
    pH=7.0时的净电荷数:2.21
    酸性基团个数:2.1
    碱性基团个数:疏水
    平均亲水性:-1.2166666666667
    疏水性值:-0.72
    外观与性状:白色粉末状固体
    消光系数:11000
    来源:人工化学合成,仅限科学研究使用,不得用于人体。
    纯度:95%、98%
    储存条件:负80℃至负20℃
    标签:D型氨基酸肽   

  • In search of competitive β-MSH antagonists, the hexapeptide GHRP-6 has been recognized as a selective inhibitor of β-MSH activity in the frog skin bioassay. It is identical in sequence with a growth hormone-releasing peptide analog, (His¹,Lys⁶)-GHRP, which selectively releases GH in vitro and in a wide variety of species in vivo. GHRP-6 also acts as a functional antagonist of somatostatin in the somatotrope cells.

    H-His-D-Trp-Ala-Trp-D-Phe-Lys-NH2 is a potent activator of the human growth hormone receptor, which leads to increased levels of insulin growth factor 1 (IGF1). H-His-D-Trp-Ala-Trp-D-Phe-Lys NH2 causes an increase in locomotor activity and somatotrophs. This peptide has been shown to be effective in treating metabolic disorders such as obesity and diabetes mellitus type 2. It also has antiviral properties that may be useful for the treatment of infectious diseases, such as HIV.

    很多蛋白在细胞中非常容易被降解,或被标记,进而被选择性地破坏。但含有部分D型氨基酸的多肽则显示了很强的抵抗蛋白酶降解能力。

  • DOI名称
    10.1016/j.cardiores.2003.10.012Growth hormone-releasing peptide can improve left ventricular dysfunction and attenuate dilation in dilated cardiomyopathic hamsters下载
    10.1111/j.1365-2982.2004.00564.xEffect of ghrelin and growth hormone-releasing peptide 6 on septic ileus in mice下载
    10.1016/j.domaniend.2006.11.005Effects of ghrelin and its analogues on chicken ovarian granulosa cells下载
    10.1208/pt0802043Formation of acylated growth hormone-releasing peptide-6 by poly(lactide-co-glycolide) and its biological activity下载
    10.1016/j.ijpharm.2007.06.005In vitro release study of mono-PEGylated growth hormone-releasing peptide-6 from PLGA microspheres下载
    10.1530/EJE-07-0659Association between tumoral GH-releasing peptide receptor type 1a mRNA expression and in vivo response to GH-releasing peptide-6 in ACTH-dependent Cushing's syndrome patients下载
    10.1124/mol.108.049189Overlapping binding site for the endogenous agonist, small-molecule agonists, and ago-allosteric modulators on the ghrelin receptor下载
    10.1530/EJE-09-0459Partial restoration of GH responsiveness to ghrelin in Cushing's disease after 6 months of ketoconazole treatment: comparison with GHRP-6 and GHRH下载
    10.1016/0024-3205(90)90563-7Oral activity of the growth hormone releasing peptide His-D-Trp-Ala-Trp-D-Phe-Lys-NH2 in rats, dogs and monkeys下载
    10.1016/j.mce.2011.02.002Insulin and growth hormone-releasing peptide-6 (GHRP-6) have differential beneficial effects on cell turnover in the pituitary, hypothalamus and cerebellum of streptozotocin (STZ)-induced diabetic rats下载
    10.1016/j.peptides.2011.07.026Molecular identification of ghrelin receptor (GHS-R1a) and its functional role in the gastrointestinal tract of the guinea-pig下载
    10.1210/en.2014-1074The opposing effects of ghrelin on hypothalamic and systemic inflammatory processes are modulated by its acylation status and food intake in male rats下载
    10.1016/0028-3908(89)90129-9Binding of a growth hormone releasing hexapeptide to specific hypothalamic and pituitary binding sites下载
    10.1111/j.1365-2826.2005.01347.xGrowth hormone-releasing peptide-6 increases insulin-like growth factor-I mRNA levels and activates Akt in RCA-6 cells as a model of neuropeptide Y neurones下载
  • 多肽H2N-His-DTrp-Ala-Trp-DPhe-Lys-NH2的合成步骤:

    1、合成MBHA树脂:取若干克的MBHA树脂(如初始取代度为0.5mmol/g)和1倍树脂摩尔量的Fmoc-Linker-OH加入到反应器中,加入DMF,搅拌使氨基酸完全溶解。再加入树脂2倍量的DIEPA,搅拌混合均匀。再加入树脂0.95倍量的HBTU,搅拌混合均匀。反应3-4小时后,用DMF洗涤3次。用2倍树脂体积的10%乙酸酐/DMF 进行封端30分钟。然后再用DMF洗涤3次,甲醇洗涤2次,DCM洗涤2次,再用甲醇洗涤2次。真空干燥12小时以上,得到干燥的树脂{Fmoc-Linker-MHBA Resin},测定取代度。这里测得取代度为 0.3mmol/g。结构如下图:

    2、脱Fmoc:取2.83g的上述树脂,用DCM或DMF溶胀20分钟。用DMF洗涤2遍。加3倍树脂体积的20%Pip/DMF溶液,鼓氮气30分钟,然后2倍树脂体积的DMF 洗涤5次。得到 H2N-Linker-MBHA Resin 。(此步骤脱除Fmoc基团,茚三酮检测为蓝色,Pip为哌啶)。结构图如下:

    3、缩合:取2.55mmol Fmoc-Lys(Boc)-OH 氨基酸,加入到上述树脂里,加适当DMF溶解氨基酸,再依次加入5.09mmol DIPEA,2.42mmol HBTU。反应30分钟后,取小样洗涤,茚三酮检测为无色。用2倍树脂体积的DMF 洗涤3次树脂。(洗涤树脂,去掉残留溶剂,为下一步反应做准备)。得到Fmoc-Lys(Boc)-Linker-MBHA Resin。氨基酸:DIPEA:HBTU:树脂=3:6:2.85:1(摩尔比)。结构图如下:

    4、依次循环步骤二、步骤三,依次得到

    H2N-Lys(Boc)-Linker-MBHA Resin

    Fmoc-DPhe-Lys(Boc)-Linker-MBHA Resin

    H2N-DPhe-Lys(Boc)-Linker-MBHA Resin

    Fmoc-Trp(Boc)-DPhe-Lys(Boc)-Linker-MBHA Resin

    H2N-Trp(Boc)-DPhe-Lys(Boc)-Linker-MBHA Resin

    Fmoc-Ala-Trp(Boc)-DPhe-Lys(Boc)-Linker-MBHA Resin

    H2N-Ala-Trp(Boc)-DPhe-Lys(Boc)-Linker-MBHA Resin

    Fmoc-DTrp(Boc)-Ala-Trp(Boc)-DPhe-Lys(Boc)-Linker-MBHA Resin

    H2N-DTrp(Boc)-Ala-Trp(Boc)-DPhe-Lys(Boc)-Linker-MBHA Resin

    Fmoc-His(Trt)-DTrp(Boc)-Ala-Trp(Boc)-DPhe-Lys(Boc)-Linker-MBHA Resin

    以上中间结构,均可在专肽生物多肽计算器-多肽结构计算器中,一键画出。

    最后再经过步骤二得到 H2N-His(Trt)-DTrp(Boc)-Ala-Trp(Boc)-DPhe-Lys(Boc)-Linker-MBHA Resin,结构如下:

    5、切割:6倍树脂体积的切割液(或每1g树脂加8ml左右的切割液),摇床摇晃 2小时,过滤掉树脂,用冰无水乙醚沉淀滤液,并用冰无水乙醚洗涤沉淀物3次,最后将沉淀物放真空干燥釜中,常温干燥24小试,得到粗品H2N-His-DTrp-Ala-Trp-DPhe-Lys-NH2。结构图见产品结构图。

    切割液选择: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%

    (前两种适合没有容易氧化的氨基酸,例如Trp、Cys、Met。第三种适合几乎所有的序列。)

    6、纯化冻干:使用液相色谱纯化,收集目标峰液体,进行冻干,获得蓬松的粉末状固体多肽。不过这时要取小样复测下纯度 是否目标纯度。

    7、最后总结:

    杭州专肽生物技术有限公司(ALLPEPTIDE https://www.allpeptide.com)主营定制多肽合成业务,提供各类长肽,短肽,环肽,提供各类修饰肽,如:荧光标记修饰(CY3、CY5、CY5.5、CY7、FAM、FITC、Rhodamine B、TAMRA等),功能基团修饰肽(叠氮、炔基、DBCO、DOTA、NOTA等),同位素标记肽(N15、C13),订书肽(Stapled Peptide),脂肪酸修饰肽(Pal、Myr、Ste),磷酸化修饰肽(P-Ser、P-Thr、P-Tyr),环肽(酰胺键环肽、一对或者多对二硫键环),生物素标记肽,PEG修饰肽,甲基化修饰肽等。

    以上所有内容,为专肽生物原创内容,请勿发布到其他网站上。

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