Anticancer; amylin analog; diabetes

普兰林肽以剂量依赖性方式抑制 HCT-116 和 HT-29 的生长，并且对后者的疗效更强（IC50 值分别为 48.67 和 9.10 μg/mL）[1]。当 HCT-116 和 HT-29 中添加 5、10 和 20 μg/mL 的普兰林肽时，可协同诱导 5-氟尿嘧啶、奥沙利铂或伊立替康的抗增殖作用 [1]。

MTT试验[1]
将HCT-116（野生型p53）和HT-29（突变型p53）细胞以200 μL的培养基密度5×103接种于96孔板中，孵育并贴壁过夜。分别用pramlintide (0-102.4 μg/mL)、5- fu （0-200 μM）、OXA （0-300 μM）或IRN （0-160 μM）单独或联合3种不同浓度的pramlintide(5、10、20 μg/mL)（对应HT-29中的0.5×IC50、IC50和2×IC50）对贴壁细胞进行处理。在培养基中单独生长的细胞（仅用普兰林肽处理）或含有等量DMSO的细胞作为对照（用于其他处理条件）。[1]
将细胞与指定浓度的药物孵育72小时。所有的测量都是一式三份。然后，按照制造商的方案进行细胞增殖试验。简单地说，将MTT染料以0.5 mg/mL的终浓度加入PBS中。37℃孵育3小时，丢弃MTT，每孔加入100 μL DMSO溶解甲醛产物，摇匀5分钟。然后，使用酶联免疫吸附测定板阅读器在570 nm处读取，参考波长为690 nm。细胞活力计算公式为：实验组吸光度/对照组吸光度。IC50值定义为使细胞活力降低50%所需的浓度。使用Compusyn软件1.0进行剂量效应分析和IC50计算。

[1]. Pramlintide, an antidiabetic, is antineoplastic in colorectal cancer and synergizes with conventional chemotherapy. Clin Pharmacol. 2018 Mar 5;10:23-29.

To investigate the synergistic potential of pramlintide with chemotherapy agents in colorectal cancer cell lines, we sought to test three different concentrations of pramlintide that correspond to 0.5×IC50, IC50, and 2×IC50 in each cell line. Nevertheless, due to high concentration requirements in HCT-116 cell lines, the limited amount of the drug available, and to be consistent with the investigated comparisons, we utilized pramlintide at concentrations of 5, 10, and 20 μg/mL, which correspond to 0.5×IC50, IC50, and 2×IC50 in HT-29. We demonstrated for the first time that at low and clinically achievable concentrations, pramlintide could synergistically inhibit colorectal cancer cell proliferation in HCT-116 and HT-29 cell lines when combined with 5-FU, OXA, and IRN in a concentration-dependent manner. These results suggest that pramlintide is a novel potential adjuvant anticancer agent with beneficial role in overcoming resistance to 5-FU, OXA, and IRN. Further in vivo and clinical studies are required to establish pramlintide as a valid chemopreventive and chemotherapeutic agent in colorectal cancer. [1]
Despite the promising results we obtained from this study, there were some limitations. First, the antineoplastic potential of pramlintide was tested only using the short-term MTT assay. Second, we utilized only two representative cell lines to investigate the differential effect of pramlintide based on the p53 status; thus, the difference in the response to pramlintide between HT-29 and HCT-116 could be due to factors other than p53. [1]
Conclusion This study shows for the first time that pramlintide has anticancer activity against colorectal cancer and has a synergistic effect with 5-FU, OXA, and IRN. Future work will more fully explore the antiproliferative mechanisms of pramlintide and the underlying molecular mechanisms of synergism. Moreover, the antineoplastic potential of pramlintide will be analyzed using other long-term assays, such as colony-forming assay, and in vivo models of colorectal cancer. [1]

C173H271N51O55S2

4009.44157624245

4007.9451

187887-46-3

Pramlintide;151126-32-8;Pramlintide TFA

118984456

Lys-Cys-Asn-Thr-Ala-Thr-Cys-Ala-Thr-Gln-Arg-Leu-Ala-Asn-Phe-Leu-Val-His-Ser-Ser-Asn-Asn-Phe-Gly-Pro-Ile-Leu-Pro-Pro-Thr-Asn-Val-Gly-Ser-Asn-Thr-Tyr-NH2 (Disulfide bridge:Cys2-Cys7); H-Lys-Cys(1)-Asn-Thr-Ala-Thr-Cys(1)-Ala-Thr-Gln-Arg-Leu-Ala-Asn-Phe-Leu-Val-His-Ser-Ser-Asn-Asn-Phe-Gly-Pro-Ile-Leu-Pro-Pro-Thr-Asn-Val-Gly-Ser-Asn-Thr-Tyr-NH2.CH3CO2H; L-lysyl-L-cysteinyl-L-asparagyl-L-threonyl-L-alanyl-L-threonyl-L-cysteinyl-L-alanyl-L-threonyl-L-glutaminyl-L-arginyl-L-leucyl-L-alanyl-L-asparagyl-L-phenylalanyl-L-leucyl-L-valyl-L-histidyl-L-seryl-L-seryl-L-asparagyl-L-asparagyl-L-phenylalanyl-glycyl-L-prolyl-L-isoleucyl-L-leucyl-L-prolyl-L-prolyl-L-threonyl-L-asparagyl-L-valyl-glycyl-L-seryl-L-asparagyl-L-threonyl-L-tyrosinamide (2->7)-disulfide acetic acid

KCNTATCATQRLANFLVHSSNNFGPILPPTNVGSNTY-NH2 (Disulfide bridge:Cys2-Cys7); KCNTATCATQRLANFLVHSSNNFGPILPPTNVGSNTY

White to off-white solid powder

1780Ų

57

61

110

281

9690

41

S1C[C@@H](C(N[C@@H](C)C(N[C@@H]([C@@H](C)O)C(N[C@@H](CCC(N)=O)C(N[C@H](C(N[C@H](C(N[C@@H](C)C(N[C@@H](CC(N)=O)C(N[C@@H](CC2C=CC=CC=2)C(N[C@@H](CC(C)C)C(N[C@@H](C(C)C)C(N[C@@H](CC2=CNC=N2)C(N[C@@H](CO)C(N[C@@H](CO)C(N[C@@H](CC(N)=O)C(N[C@@H](CC(N)=O)C(N[C@@H](CC2C=CC=CC=2)C(NCC(N2CCC[C@H]2C(N[C@@H]([C@@H](C)CC)C(N[C@@H](CC(C)C)C(N2CCC[C@H]2C(N2CCC[C@H]2C(N[C@H](C(N[C@H](C(N[C@H](C(NCC(N[C@H](C(N[C@H](C(N[C@H](C(N[C@H](C(N)=O)CC2C=CC(=CC=2)O)=O)[C@@H](C)O)=O)CC(N)=O)=O)CO)=O)=O)C(C)C)=O)CC(N)=O)=O)[C@@H](C)O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)=O)CC(C)C)=O)CCCNC(=N)N)=O)=O)=O)=O)NC([C@H]([C@@H](C)O)NC([C@H](C)NC([C@H]([C@@H](C)O)NC([C@H](CC(N)=O)NC([C@H](CS1)NC([C@H](CCCCN)N)=O)=O)=O)=O)=O)=O.OC(C)=O

DTPWZYSUQQHRKD-VIUAGAKSSA-N

InChI=1S/C171H267N51O53S2.C2H4O2/c1-21-81(12)130(163(268)207-110(56-78(6)7)169(274)222-53-33-42-118(222)170(275)221-52-32-41-117(221)160(265)219-135(89(20)230)167(272)206-109(66-125(180)238)151(256)212-128(79(8)9)161(266)186-68-126(239)192-111(70-223)154(259)203-107(64-123(178)236)152(257)218-134(88(19)229)166(271)195-98(136(181)241)57-92-43-45-94(231)46-44-92)214-159(264)116-40-31-51-220(116)127(240)69-187-141(246)101(58-90-34-24-22-25-35-90)199-148(253)105(62-121(176)234)201-149(254)106(63-122(177)235)202-155(260)112(71-224)209-156(261)113(72-225)208-146(251)103(60-93-67-184-75-188-93)205-162(267)129(80(10)11)213-150(255)100(55-77(4)5)198-145(250)102(59-91-36-26-23-27-37-91)200-147(252)104(61-120(175)233)196-137(242)82(13)189-144(249)99(54-76(2)3)197-142(247)96(39-30-50-185-171(182)183)193-143(248)97(47-48-119(174)232)194-165(270)132(86(17)227)215-138(243)83(14)190-157(262)114-73-276-277-74-115(210-140(245)95(173)38-28-29-49-172)158(263)204-108(65-124(179)237)153(258)217-131(85(16)226)164(269)191-84(15)139(244)216-133(87(18)228)168(273)211-114;1-2(3)4/h22-27,34-37,43-46,67,75-89,95-118,128-135,223-231H,21,28-33,38-42,47-66,68-74,172-173H2,1-20H3,(H2,174,232)(H2,175,233)(H2,176,234)(H2,177,235)(H2,178,236)(H2,179,237)(H2,180,238)(H2,181,241)(H,184,188)(H,186,266)(H,187,246)(H,189,249)(H,190,262)(H,191,269)(H,192,239)(H,193,248)(H,194,270)(H,195,271)(H,196,242)(H,197,247)(H,198,250)(H,199,253)(H,200,252)(H,201,254)(H,202,260)(H,203,259)(H,204,263)(H,205,267)(H,206,272)(H,207,268)(H,208,251)(H,209,261)(H,210,245)(H,211,273)(H,212,256)(H,213,255)(H,214,264)(H,215,243)(H,216,244)(H,217,258)(H,218,257)(H,219,265)(H4,182,183,185);1H3,(H,3,4)/t81-,82-,83-,84-,85+,86+,87+,88+,89+,95-,96-,97-,98-,99-,100-,101-,102-,103-,104-,105-,106-,107-,108-,109-,110-,111-,112-,113-,114-,115-,116-,117-,118-,128-,129-,130-,131-,132-,133-,134-,135-;/m0./s1

acetic acid;(2S)-N-[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-4-amino-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-4-amino-1-[[(2S)-4-amino-1-[[(2S)-1-[[2-[(2S)-2-[[(2S,3S)-1-[[(2S)-1-[(2S)-2-[(2S)-2-[[(2S,3R)-1-[[(2S)-4-amino-1-[[(2S)-1-[[2-[[(2S)-1-[[(2S)-4-amino-1-[[(2S,3R)-1-[[(2S)-1-amino-3-(4-hydroxyphenyl)-1-oxopropan-2-yl]amino]-3-hydroxy-1-oxobutan-2-yl]amino]-1,4-dioxobutan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-2-oxoethyl]amino]-3-methyl-1-oxobutan-2-yl]amino]-1,4-dioxobutan-2-yl]amino]-3-hydroxy-1-oxobutan-2-yl]carbamoyl]pyrrolidine-1-carbonyl]pyrrolidin-1-yl]-4-methyl-1-oxopentan-2-yl]amino]-3-methyl-1-oxopentan-2-yl]carbamoyl]pyrrolidin-1-yl]-2-oxoethyl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-1,4-dioxobutan-2-yl]amino]-1,4-dioxobutan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-3-(1H-imidazol-4-yl)-1-oxopropan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-1,4-dioxobutan-2-yl]amino]-1-oxopropan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]-2-[[(2S,3R)-2-[[(2S)-2-[[(4R,7S,10S,13S,16S,19R)-16-(2-amino-2-oxoethyl)-19-[[(2S)-2,6-diaminohexanoyl]amino]-7,13-bis[(1R)-1-hydroxyethyl]-10-methyl-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]amino]propanoyl]amino]-3-hydroxybutanoyl]amino]pentanediamide

187887-46-3; Triproamylin acetate; UNII-JS41L76X7I; Tripro-amylin acetate; Pramlintide acetate anhydrous;

2934.99.9001

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

注意： 请将本产品存放在密封且受保护的环境中，避免吸湿/受潮。

Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

H2O: 50 mg/mL (12.47 mM)

注意: 如下所列的是一些常用的体内动物实验溶解配方，主要用于溶解难溶或不溶于水的产品（水溶度<1 mg/mL）。 建议您先取少量样品进行尝试，如该配方可行，再根据实验需求增加样品量。

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注射用配方1: DMSO : Tween 80： Saline = 10 : 5 : 85 (如： 100 μL DMSO → 50 μL Tween 80 → 850 μL Saline)
*生理盐水/Saline的制备：将0.9g氯化钠/NaCl溶解在100 mL ddH ₂ O中，得到澄清溶液。
注射用配方 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (如： 100 μL DMSO → 400 μL PEG300 → 50 μL Tween 80 → 450 μL Saline)
注射用配方 3: DMSO : Corn oil = 10 : 90 (如： 100 μL DMSO → 900 μL Corn oil)
示例: 以注射用配方 3 (DMSO : Corn oil = 10 : 90) 为例说明, 如果要配制 1 mL 2.5 mg/mL的工作液, 您可以取 100 μL 25 mg/mL 澄清的 DMSO 储备液，加到 900 μL Corn oil/玉米油中, 混合均匀。

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注射用配方 4: DMSO : 20% SBE-β-CD in Saline = 10 : 90 [如：100 μL DMSO → 900 μL (20% SBE-β-CD in Saline)]
*20% SBE-β-CD in Saline的制备（4°C，储存1周）：将2g SBE-β-CD (磺丁基-β-环糊精) 溶解于10mL生理盐水中，得到澄清溶液。
注射用配方 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (如： 500 μL 2-Hydroxypropyl-β-cyclodextrin (羟丙基环胡精)→ 500 μL Saline)
注射用配方 6: DMSO : PEG300 : Castor oil : Saline = 5 : 10 : 20 : 65 (如： 50 μL DMSO → 100 μL PEG300 → 200 μL Castor oil → 650 μL Saline)
注射用配方 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (如： 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline)
注射用配方 8: 溶解于Cremophor/Ethanol (50 : 50), 然后用生理盐水稀释。
注射用配方 9: EtOH : Corn oil = 10 : 90 (如： 100 μL EtOH → 900 μL Corn oil)
注射用配方 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (如： 100 μL EtOH → 400 μL PEG300 → 50 μL Tween 80 → 450 μL Saline)

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口服配方 1: 悬浮于0.5% CMC Na (羧甲基纤维素钠)
口服配方 2: 悬浮于0.5% Carboxymethyl cellulose (羧甲基纤维素)
示例: 以口服配方 1 (悬浮于 0.5% CMC Na)为例说明, 如果要配制 100 mL 2.5 mg/mL 的工作液, 您可以先取0.5g CMC Na并将其溶解于100mL ddH2O中，得到0.5%CMC-Na澄清溶液；然后将250 mg待测化合物加到100 mL前述 0.5%CMC Na溶液中，得到悬浮液。

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口服配方 3: 溶解于 PEG400 (聚乙二醇400)
口服配方 4: 悬浮于0.2% Carboxymethyl cellulose (羧甲基纤维素)
口服配方 5: 溶解于0.25% Tween 80 and 0.5% Carboxymethyl cellulose (羧甲基纤维素)
口服配方 6: 做成粉末与食物混合

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注意: 以上为较为常见方法，仅供参考， InvivoChem并未独立验证这些配方的准确性。具体溶剂的选择首先应参照文献已报道溶解方法、配方或剂型，对于某些尚未有文献报道溶解方法的化合物，需通过前期实验来确定（建议先取少量样品进行尝试），包括产品的溶解情况、梯度设置、动物的耐受性等。

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请根据您的实验动物和给药方式选择适当的溶解配方/方案：
1、请先配制澄清的储备液(如：用DMSO配置50 或 100 mg/mL母液(储备液));
2、取适量母液，按从左到右的顺序依次添加助溶剂，澄清后再加入下一助溶剂。以 下列配方为例说明 (注意此配方只用于说明，并不一定代表此产品 的实际溶解配方):
10% DMSO → 40% PEG300 → 5% Tween-80 → 45% ddH2O (或 saline);
假设最终工作液的体积为 1 mL, 浓度为5 mg/mL: 取 100 μL 50 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀/澄清；向上述体系中加入50 μL Tween-80，混合均匀/澄清；然后继续加入450 μL ddH2O (或 saline)定容至 1 mL；
3、溶剂前显示的百分比是指该溶剂在最终溶液/工作液中的体积所占比例;
4、 如产品在配制过程中出现沉淀/析出，可通过加热(≤50℃)或超声的方式助溶;
5、为保证最佳实验结果，工作液请现配现用！
6、如不确定怎么将母液配置成体内动物实验的工作液，请查看说明书或联系我们;
7、 以上所有助溶剂都可在 Invivochem.cn网站购买。