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      干貨!AOM/DSS結(jié)直腸癌模型

      AOM/DSS模型是目前使用最廣泛的UC化學(xué)誘導(dǎo)模型,臨床癥狀學(xué)、形態(tài)學(xué)及病理學(xué)觀察證明,該模型與人類潰瘍性結(jié)腸炎癌變過(guò)程極為相似。AOM60751ES引起鳥(niǎo)嘌呤O6甲基化是誘導(dǎo)基因突變損傷最主要的原因,基因突變使細(xì)胞過(guò)度增殖,形成特異性的大腸腫瘤。DSS的致炎機(jī)制尚未闡明,可能與DSS的負(fù)電荷影響 DNA 合成、抑制上皮細(xì)胞增生、破壞腸黏膜屏障、導(dǎo)致巨噬細(xì)胞功能障礙及腸道菌群失調(diào)有關(guān)。


       1.png

      1.來(lái)源pixabay

       

      作用機(jī)制

      偶氮甲烷(AOM)能誘導(dǎo)DNA產(chǎn)生O6-甲基鳥(niǎo)嘌加合物,導(dǎo)致G→A轉(zhuǎn)化。

       

       

      實(shí)驗(yàn)動(dòng)物

       BALB/c小鼠(7周齡,雄性)

       

       

      實(shí)驗(yàn)材料

      DSS(Yeasen#60316ES,MW36000-50000)、AOM

       

       

      實(shí)驗(yàn)前準(zhǔn)備

      DSS配制:使用無(wú)菌水配制濃度1-3% DSS溶液,儲(chǔ)存在4℃?zhèn)溆谩?/span>

      AOM配制:用無(wú)菌水溶解AOM配制10 mg/mL的儲(chǔ)存液,分裝后放到-20℃保存,避免反復(fù)凍融。使用之前,融化分裝母液并用無(wú)菌生理鹽水1:10倍稀釋。

       

       

      實(shí)驗(yàn)步驟

      1.第1天稱重并標(biāo)記小鼠,實(shí)驗(yàn)組小鼠腹腔注射偶氮甲烷 AOM(10 mg/kg);
      2.用常規(guī)飲用水喂食一周;
      3.用2.5%濃度DSS替換飲用水喂食一周;
      4.用常規(guī)飲用水喂食2周;
      5.步驟3和步驟4重復(fù)3次。 

      2.png 

      2.AOM/DSS結(jié)直腸癌造模步驟

       

      結(jié)果分析

       

      3.png

      3.(A)AOM/DSS 誘導(dǎo)的結(jié)直腸癌示意圖, (B)小鼠體重、(C)腹瀉評(píng)分、(D)出血評(píng)分和(E) 代表性全結(jié)腸和結(jié)腸癌數(shù)的變化。

       

      4.png 

      4.結(jié)腸切片HE染色結(jié)果

       

       

      參考文獻(xiàn)

      [1] Jia-Rong Huang, Sheng-Te Wang,Meng-Ning Wei,et al.Piperlongumine Alleviates Mouse Colitis and Colitis-Associated Colorectal Cancer[J].Frontiers in Pharmacology.2020.11:586885.(IF=5.988,DSS yeasen 60316ES)

       

       

      翌圣DSS產(chǎn)品優(yōu)勢(shì)

       

      翌圣生物提供高品質(zhì)DSS(Cat.NO:60316ES,MW:36000~50000),具有以下優(yōu)勢(shì):

      1. 高純度(>98%),硫含量17-19%,游離硫<0.2%,大量數(shù)據(jù)文獻(xiàn)支持,廣泛應(yīng)用于UC模型的構(gòu)建。

      2. 多種屬動(dòng)物中均可造模:小鼠、大鼠、斑馬魚、豬、果蠅;

      3. 癥狀表現(xiàn)與人UC極度相似:可用于研究急、慢性結(jié)腸炎的發(fā)生發(fā)展機(jī)制,也可用于藥物的藥效研究。

      4. 簡(jiǎn)單易行,成模率高,重復(fù)性強(qiáng)

      5. 聯(lián)合氧化偶氮甲烷 (azoxymethane, AOM)用藥,可用于誘發(fā)結(jié)腸炎相關(guān)性癌癥 (colitis associated cancer, CAC) 動(dòng)物模型,成功模擬IBD誘發(fā)CAC的過(guò)程。

      5.png 

      建模效率與進(jìn)口產(chǎn)品一致,產(chǎn)品價(jià)格低至進(jìn)口價(jià)格的1/3,大量現(xiàn)貨庫(kù)存。

       

      產(chǎn)品訂購(gòu)

      貨號(hào)

      產(chǎn)品名稱

      規(guī)格

      應(yīng)用場(chǎng)景

      60316ES

      ColitCare® Dextran Sulfate Sodium SaltDSS

      結(jié)腸炎建模用葡聚糖硫酸鈉鹽 MW : 3600050000

      25 g/100 g/500 g/1000 g

      常被用于誘導(dǎo)結(jié)腸炎模型。

      60751ES

      Azoxymethane 偶氮甲烷(AOM) |CAS 25843-45-2

      1 mg/5 mg/10 mg

      (液體:135 mM in Water)

      與葡聚糖硫酸鈉鹽DSS 一起用于結(jié)直腸癌的小鼠模型創(chuàng)建。

      60736ES

      Low Density Lipoprotein Cholesterol Content Assay kit 低密度脂蛋白膽固醇(LDL-C)含量檢測(cè)試劑盒(微量法)

      96T

      測(cè)定低密度脂蛋白膽固醇含量。

      60737ES

      High Density Lipoprotein Cholesterol Content Assay Kit 高密度脂蛋白膽固醇(HDL-C)含量檢測(cè)試劑盒(微量法)

      96T

      測(cè)定高密度脂蛋白膽固醇含量。

      61220ES

      FITC-Dextran (MW 4000) FITC標(biāo)記葡聚糖(MW 4000)

      5 mg/10 mg/50 mg

      評(píng)估腸的滲透性。

      61223ES

      FITC-Dextran (MW 40000) FITC標(biāo)記葡聚糖(MW 40000)

      5 mg/10 mg/50 mg

      評(píng)估腸的滲透性。

      18820ES

      MolPure® Stool DNA Kit 糞便DNA提取試劑盒

      5 T/50 T/200 T

      能高效獲得優(yōu)質(zhì)的糞便DNA,有利于后續(xù)對(duì)腸道微生物的研究。

      60524ES

      Hematoxylin and Eosin Staining Kit 蘇木素伊紅(H&E)染色試劑盒

      2×100 mL

      用于免疫組化中組織切片,血涂片,骨髓切片的染色。

      60403ES

      Urine Fecal Occult Blood Test Kit 尿糞隱血檢測(cè)試劑盒(聯(lián)苯胺法)

      100T

      對(duì)慢性消化道出血,如:消化性潰瘍等的研究篩選均具有重要價(jià)值。

      60534ES

      AB-PAS染色液

      6×50 mL/6×100 mL

      可鑒別同一組織中的中性黏蛋白和酸性黏蛋白。

      41403ES

      PBS(1×)細(xì)胞培養(yǎng)級(jí)

      500 mL

      最常用的緩沖溶液。


      點(diǎn)擊產(chǎn)品名稱查看詳情
       

      產(chǎn)品已發(fā)表文章(部分)

      向下滑動(dòng)查看

      2022

      [1] Lujuan Xing, Lijuan Fu, Songmin Cao,et al.The Anti-Inflammatory Effect of Bovine Bone-Gelatin-Derived Peptides in LPS-Induced RAW264.7 Macrophages Cells and Dextran Sulfate Sodium-Induced C57BL/6 Mice[J]. Nutrients 2022, 14, 1479. IF=5.717

      [2] Lei-NingChen,TaoJing,Zi-BinLin,et al.Metabolomic and transcriptomic responses of mouse testis to the dextran sulfate sodium induced colitis[J].Reproductive Toxicology.2022, Pages 35-42.IF=3.143

      [3] YuangengLi,PingYu,WenwenFu,et al.Polysaccharides from Panax ginseng C. A. Meyer alleviated DSS-induced IBD by inhibiting JAK2/STAT1/NLPR3 inflammasome signalling pathway in mice[J].Journal of Functional Foods.2022, 105013. IF=4.451

      [4] Wang S,  Huang J,  Tan KS, et al.Isosteviol Sodium Ameliorates Dextran Sodium Sulfate-Induced Chronic Colitis through the Regulation of Metabolic Profiling, Macrophage Polarization, and NF-B Pathway[J].Oxidative Medicine and Cellular Longevity. 2022,4636618. IF=5.076

      [5] Chenglu Sun, Jingpeng Hao,Hong Qin,et al.Endometrial Regenerative Cell-Derived Conditioned Medium Alleviates Experimental Colitis.Stem Cells Int 2022;2022 IF=3.869

       

      2021

      [1] Li Zhao, Fei Wang , Zhengwei Cai,et al.Improving drug utilization platform with injectable mucoadhesive hydrogel for treating ulcerative colitis[J].Chemical Engineering Journal.424(2021)130464. IF=16.744

      [2] Hao H,  Zhang X,  Tong L,  Liu Q,et al.Lactobacillus plantarumEffect of Extracellular Vesicles Derived From  Q7 on Gut Microbiota and Ulcerative Colitis in Mice[J].Frontiers in Immunology.2021.777147 .IF=7.561

      [3] Lingjun Tong, Xinyi Zhang , Haining Hao,et al.Lactobacillus rhamnosus GG Derived Extracellular Vesicles Modulate Gut Microbiota and Attenuate Inflammatory in DSS-Induced Colitis Mice[J].Nutrients.2021, 13, 3319. IF=5.717

      [4] Zhipeng Gu , Yujie Zhu, Fengfeng Mei,et al.Tilapia head glycolipids protect mice against dextran sulfate sodium-induced colitis by ameliorating the gut barrier and suppressing NF-kappa B signaling pathway[J].International Immunopharmacology.96 (2021) 107802. IF=3.943

      [5] JialiDong,YuanLi,HuiwenXiao,et al.Oral microbiota affects the efficacy and prognosis of radiotherapy for colorectal cancer in mouse models[J].Cell reports.2021, 109886.IF=9.423

      [6] Yaohua Fan,Yanqun Fan,Kunfeng Liu,et al.Edible Bird’s Nest Ameliorates Dextran Sulfate Sodium-Induced Ulcerative Colitis in C57BL/6J Mice by Restoring the Th17/Treg Cell Balance[J].Frontiers in Pharmacology.2021.632602.IF=7.561

       

      2020

      [1] Jia-Rong Huang, Sheng-Te Wang, Meng-Ning Wei,et al.Piperlongumine Alleviates Mouse Colitis and Colitis-Associated Colorectal Cancer[J].Frontiers in Pharmacology.2020.586885. IF=7.561

      [2] Gao X, Fan W, Tan L, et al. Soy isoflavones ameliorate experimental colitis by targeting ERα/NLRP3 inflammasome pathways[J]. The Journal of Nutritional Biochemistry, 2020, 83.IF=6.048

      [3] Li, Y., Dong, J., Xiao, H., Zhang, S., Wang, B., Cui, M., & Fan, S. Gut commensal derived-valeric acid protects against radiation injuries. Gut Microbes,.2020 .1–18.IF=10.245

       

      BEFORE 2020

      [1] Oehlers SH, Flores MV, Hall CJ, Crosier KE, Crosier PS. Retinoic acid suppresses intestinal mucus production and exacerbates experimental enterocolitis. Dis Model Mech. 2012 Jul;5(4):457-67.IF=4.973

      [2] Kim CJ, Kovacs-Nolan JA, Yang C, Archbold T, Fan MZ, Mine Y. l-Tryptophan exhibits therapeutic function in a porcine model of dextran sodium sulfate (DSS)-induced colitis. J Nutr Biochem . 2010 Jun;21(6):468-75.IF=6.048

      [3] Karpowicz , P., Perez, J. & Perrimon , N.,. The Hippo tumor suppressor pathway regulates intestinal stem cell regeneration. Development (Cambridge, England), 2010,137(24), pp.4135–4145.IF=6.868

      [4] Fan H, Chen W, Zhu J, et al. Toosendanin alleviates dextran sulfate sodium-induced colitis by inhibiting M1 macrophage polarization and regulating NLRP3 inflflammasome and Nrf2/HO-1 signaling[J]. International immunopharmacology, 2019, 76: 105909.IF=3.943

       


       

       

       

       

      往期精彩

       

       

      1.不同分子量葡聚糖硫酸鈉選購(gòu)指南:高品質(zhì)DSS葡聚糖硫酸鈉鹽

      2.DSS結(jié)腸炎造模整體解決方案:Dextran Sulfate Sodium Salt(DSS) 潰瘍性結(jié)腸炎模型的建立 (yeasen.com)

       

       
       

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