乳糖-N-新四糖

更新时间:2024-01-06 17:54:06

乳糖-N-新四糖结构式
乳糖-N-新四糖结构式
品牌特惠专场
常用名 乳糖-N-新四糖 英文名 Lacto-N-neotetraose
CAS号 13007-32-4 分子量 707.63000
密度 1.72g/cm3 沸点 1173.6ºC at 760mmHg
分子式 C26H45NO21 熔点 N/A
MSDS 中文版 美版 闪点 663.6ºC

 乳糖-N-新四糖用途


乳糖-N-新四糖(LNnT)是一种内源性代谢物。乳糖-N-新四糖可抑制TNF-α诱导的未成熟上皮细胞分泌IL-8。乳糖-N-新四糖具有抗炎活性,可以改善伤口闭合[1][2][4]。

 乳糖-N-新四糖名称

中文名 乳-N-新四糖
英文名 β-D-Gal-(1→4)-β-D-GlcNAc-(1→3)-β-D-Gal-(1→4)-D-Glc
英文别名 更多

 乳糖-N-新四糖生物活性

描述 乳糖-N-新四糖(LNnT)是一种内源性代谢物。乳糖-N-新四糖可抑制TNF-α诱导的未成熟上皮细胞分泌IL-8。乳糖-N-新四糖具有抗炎活性,可以改善伤口闭合[1][2][4]。
相关类别
靶点

Endogenous Metabolite[1], TNFR1[2].

体外研究 乳糖-N-新四糖(5 mg/mL,24 h)诱导T84细胞分泌IL-8[2]。乳糖-N-新四糖(5 mg/mL,24 h)可减少TNF-α诱导的FHs 74 Int细胞IL-8分泌,其减少率为38%[2]。乳糖-N-新四糖以900±660 nM的Kd值结合TNFR1(肿瘤坏死因子受体1)[2]。乳糖-N-新四糖(5 mg/mL,24 h)通过FHs 74 Int细胞中TNFR1外结构域的脱落减轻TNF-α诱导的炎症[2]。
体内研究 乳糖-N-新四糖(100μM,气管内给药24小时)可减少肺炎兔肺部肺炎链球菌的数量[3]。乳糖-N-新四糖(100/200μg,皮内注射,术后第3、7、14和21天)可提高创伤后第7天的伤口闭合率[4]。动物模型:肺炎兔模型[3]剂量:100μM给药:气管内给药24小时结果:激发48小时后肺部细菌负荷下降约2 logs。消除了对照动物在48小时时明显的广泛水肿性右中叶病变。动物模型:对称全厚伤口小鼠剂量:100、200μg给药:术后3、7、14和21天皮内注射。结果:愈合评分、毛囊形成和表皮厚度指数(H&E染色)均较好。
参考文献

[1]. Xiaomin Dong, et al. CRISPRi-Guided Multiplexed Fine-Tuning of Metabolic Flux for Enhanced Lacto- N-neotetraose Production in Bacillus subtilis. J Agric Food Chem. 2020 Feb 26;68(8):2477-2484.

[2]. Lianghui Cheng, et al. The Human Milk Oligosaccharides 3-FL, Lacto-N-Neotetraose, and LDFT Attenuate Tumor Necrosis Factor-α Induced Inflammation in Fetal Intestinal Epithelial Cells In Vitro through Shedding or Interacting with Tumor Necrosis Factor Receptor 1. Mol Nutr Food Res. 2021 Apr;65(7):e2000425.

[3]. I Idänpään-Heikkilä, et al. Oligosaccharides interfere with the establishment and progression of experimental pneumococcal pneumonia. J Infect Dis. 1997 Sep;176(3):704-12.

[4]. Behrouz Farhadihosseinabadi, et al. The in vivo effect of Lacto-N-neotetraose (LNnT) on the expression of type 2 immune response involved genes in the wound healing process. Sci Rep. 2020 Jan 22;10(1):997.

 乳糖-N-新四糖物理化学性质

密度 1.72g/cm3
沸点 1173.6ºC at 760mmHg
分子式 C26H45NO21
分子量 707.63000
闪点 663.6ºC
精确质量 707.24800
PSA 356.70000
蒸汽压 0mmHg at 25°C
折射率 1.668
储存条件 2-8°C

 乳糖-N-新四糖安全信息

危险品运输编码 NONH for all modes of transport
WGK德国 3

 乳糖-N-新四糖文献27

更多文献
Chemo-enzymatic supported synthesis of the 3-sulfated Lewis a pentasaccharide on a multimeric polyethylene glycol.

Carbohydr. Res. 343(5) , 970-6, (2008)

The 3-sulfated Lewis(a) pentasaccharide was synthesized on multimeric-based polyethylene glycol support. Coupling of O-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-(1-->3)-4,6-di-O-acetyl-2-deoxy-...

Enhanced factor H binding to sialylated Gonococci is restricted to the sialylated lacto-N-neotetraose lipooligosaccharide species: implications for serum resistance and evidence for a bifunctional lipooligosaccharide sialyltransferase in Gonococci.

Infect. Immun. 73(11) , 7390-7, (2005)

We isolated serologically identical (by serovar determination and porin variable region [VR] typing) strains of Neisseria gonorrhoeae from an infected male and two of his monogamous female sex partner...

Syntheses of a series of lacto-N-neotetraose clusters using a carbosilane dendrimer scaffold.

Carbohydr. Res. 341(4) , 467-73, (2006)

4-Pentenyl (2,3,4,6-tetra-O-acetyl-beta-d-galactopyranosyl)-(1-->4)-(3,6-di-O-acetyl-2-deoxy-2-phthalimido-beta-d-glucopyranosyl)-(1-->3)-(2,6-di-O-benzoyl-beta-d-galactopyranosyl)-(1-->4)-2,3,6-tri-O...

 乳糖-N-新四糖英文别名

LACTO-N-NEOTETRAOSE
Lacto-N-neo-tetraose
beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-D-Glc
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