硫酸葡聚糖钠盐（Dextran sulfate，DSS）是葡聚糖的聚阴离子衍生物，由葡聚糖和氯磺酸的酯化反应形成。其中含硫量 约为 17%，相当于葡聚糖分子的每个葡萄糖残糖中平均含1.9个硫酸基团。

DSS具有几个特点：

1）聚阴离子复合物，可溶 于水，形成无色水溶液；

2）纯度高，且具有良好的稳定性；

3）可被自然降解。

炎症性肠炎（IBD）是一种慢性、易复发的胃肠道感染，会提升肠道肿瘤发生的危险性，主要包括 UC 和克罗恩病(Crohn disease, CD)。自 1985年首次报道采用葡聚糖硫酸钠(dextran sulphate sodium, DSS)制备出仓鼠溃疡性结肠炎模型以来，已有大量研究证明 DSS 结肠炎模型与人类溃疡性结肠炎相似。DSS结肠炎模型的组织学特点、临床表现、发病部位和细胞因子增殖情况都与人类溃疡性结肠炎(ulcerative colitis, UC)极为相似。该模型的造模条件和操作方法简单，造价便宜，重复性好，便于掌握和推广；可根据实验目的调整 DSS 浓度和给药时间，建立急性、慢性和急慢性交替性模型。

产品性质

溶解方法

溶于水（100 mg/ml 澄清或者轻微模糊的黄色溶液）。具体使用浓度需根据造模类型，参考相关文献或通过预实验摸索确定。

运输与保存方法

室温运输与保存，有效期2年。

注意事项

1）为了您的安全和健康，请穿实验服并戴一次性手套操作。

2）本产品仅用于科研用途，禁止用于人身上。

3）DSS是葡聚糖聚合物，分子量是平均分子量，每个批次之间会存在分子量的差异，而分子量对结肠炎造模有影响。通常批次间比较稳定，但少部分也会存在差异。建议客户根据实验需求，购买足够的同一批次的产品，或者使用批次之前进行预实验。

相关产品推荐：

客户发表文献（不完全统计）

[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] Lingjun Tong, Haining Hao, Zhe Zhang,et al.Milk-derived extracellular vesicles alleviate ulcerative colitis by regulating the gut immunity and reshaping the gut microbiota[J].Theranostics.2021; 11(17): 8570-8586 IF=11.556

[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

[4] Jingjing Gan, Yuxiao Liu, Lingyu Sun,et al.Orally administrated nucleotide-delivery particles from microfluidics for inflammatory bowel disease treatment[J].Applied Materials Today.2021 Dec;25:101231 IF=10.041

[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] 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

[7] 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

[8] 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

[9] Mengmeng Xu, Ying Kong, Nannan Chen,et al.Identification of Immune-Related Gene Signature and Prediction of CeRNA Network in Active Ulcerative Colitis[J].Frontiers in Immunology.2022; 13: 855645. IF=7.561

[10] 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

HB221107

客户使用该产品发表的科研文献（不完全统计：部分）

2022

Mengmeng Xu, Ying Kong, Nannan Chen,et al.Identification of Immune-Related Gene Signature and Prediction of CeRNA Network in Active Ulcerative Colitis[J].Frontiers in Immunology.2022; 13: 855645. IF=7.561

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

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

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

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] Lingjun Tong, Haining Hao, Zhe Zhang,et al.Milk-derived extracellular vesicles alleviate ulcerative colitis by regulating the gut immunity and reshaping the gut microbiota[J].Theranostics.2021; 11(17): 8570-8586 IF=11.556

[3] Jingjing Gan, Yuxiao Liu, Lingyu Sun,et al.Orally administrated nucleotide-delivery particles from microfluidics for inflammatory bowel disease treatment[J].Applied Materials Today.2021 Dec;25:101231 IF=10.041

[4] 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

[5] 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

[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

水、瓶口堵塞等情况。

Q：为什么只有这个分子量的试剂可以造模？

A：DSS是一种常用于诱导结肠炎模型的化学物质。然而，不同分子量的DSS可能会产生不同的效果，因此只有特定分子量范围内的DSS适用于结肠炎模型。影响DSS适用性的关键因素是其溶解度和肠道渗透性。较低分子量的DSS溶解度较高，并且更容易通过肠道黏膜渗透，因此可以更好地模拟结肠炎的病理过程。较高分子量的DSS溶解度较低，并且渗透性较差，很难通过肠道黏膜进入肠壁，因此对于诱导结肠炎模型来说效果较差。因此，当选择适用于结肠炎模型的DSS时，需要考虑其分子量，以确保其溶解度和肠道渗透性与所需的病理模型相匹配。最适合结肠炎模型的DSS分子量可能因具体研究需求而不同，需要根据相关文献和实验经验来选择合适的DSS。

Q：为什么造模选择60316JP这个产品，而其他的葡聚糖硫酸钠不可以用？

A：通常肠炎造模使用的是 36-50KD，小分子量的 DSS 致炎效果差，大分子量的 DSS 肠道不吸收。

Q: 从DSS诱导小鼠的粪便样本中提取DNA，结肠组织中提取的RNA中会有DSS残留，会抑制下游PCR，RT-PCR实验，如何处理？

A：精胺可以去除DSS对PCR的抑制。

   参考文献：Journal of Microbiological Methods ，2018 Jan, 144: 1-7

Q：急性结肠没有变短，盲肠变大是什么原因呢？

A：慢性的变短很明显，急性的不是很明显，会变的比较脆，透明，充血等。主要看HE切片结果。急性结肠炎是结肠黏膜的急性炎症反应，盲肠变大可能是由于炎症引起的充血和水肿所致