Sulphate groups are involved in the antigenicity of keratan sulphate and mask i antigen expression on their poly-N-acetyllactosamine backbones. An immunochemical and chromatographic study of keratan sulphate oligosaccharides after desulphation or nitrosation.

Sulphate groups are involved in the antigenicity of keratan sulphate and mask i antigen expression on their poly-N-acetyllactosamine backbones. An immunochemical and chromatographic study of keratan sulphate oligosaccharides after desulphation or nitrosation.
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硫酸基团参与硫酸角质素的抗原性并掩盖其聚-N-乙酰基乳糖胺主链上的抗原表达。

DOI:
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发表时间:
1986
期刊:
European Journal of Biochemistry
影响因子:
--
通讯作者:
T. Feizi
T. Feizi
中科院分区:
--
文献类型:
--
作者:
P. Tang;P. Scudder;H. Mehmet;E. Hounsell;T. Feizi

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建立了用内切-半乳糖苷酶处理从角膜硫酸角蛋白中提取的六糖、八糖、十糖和更大寡糖的脱硫条件。采用新型微免疫化学方法与低聚糖-脂偶联物(新糖脂)进行色谱结合、塑料板结合或结合抑制试验,比较了脱硫低聚糖与天然低聚糖的抗原性。结果清楚地表明,硫酸盐残基是三种针对硫酸角蛋白聚糖、5-D-4、1-B-4和MZ15的单克隆抗体识别的抗原决定因子的必要成分,但它们掩盖了这种糖胺聚糖的线性多乙酰乳胺骨架的i抗原活性。对硫酸角蛋白衍生的脱硫线性六糖、八糖和十糖进行免疫化学处理前后的免疫化学分析表明,与一种抗i抗体Den反应时,i抗原结构的非还原性β -半乳糖残基必须位于末端位置,但与另一种抗i抗体Tho反应时,此外,与在非还原端具有n-乙酰氨基葡萄糖残基的i抗原结构具有一定的反应性。与抗体5-D-4反应良好的少量硫酸角蛋白寡糖(一种十二糖)在脱硫或亚硝化后的色谱特性,为角膜硫酸角蛋白中可能存在n -硫酸氨基葡萄糖残基提供了第一个证据。
Conditions were established for desulphation of hexa-, octa-, deca- and larger oligosaccharides derived from corneal keratan sulphate after treatment with endo-beta-galactosidase. The antigenicities of the desulphated oligosaccharides were compared with those of the native oligosaccharides in chromatogram binding, plastic-plate binding or inhibition of binding assays using a novel microimmunochemical approach with oligosaccharide-lipid conjugates (neoglycolipids). The results clearly show that sulphate residues are essential components of the antigenic determinant(s) recognised by three monoclonal antibodies to keratan sulphate, 5-D-4, 1-B-4 and MZ15, but they mask the i antigen activity of the linear poly-(N-acetyllactosamine) backbones of this glycosaminoglycan. Immunochemical assays, before and after beta-N-acetylglucosaminidase treatment of desulphated linear hexa-, octa- and decasaccharides derived from keratan sulphate, indicate that for reaction with one anti-i antibody, Den, there is an absolute requirement for the non-reducing beta-galactosyl residue of the i antigen structure to be in the terminal position, but with a second anti-i antibody, Tho, there is in addition some reactivity with the i antigen structure having an N-acetylglucosamine residue at the non-reducing end. The chromatographic properties after desulphation or nitrosation of a minor keratan sulphate oligosaccharide (a dodecasaccharide), which reacts especially well with antibody 5-D-4, have provided the first evidence for the presence of glucosamine residues that may be N-sulphated in corneal keratan sulphate.
单克隆抗体识别的人骨髓细胞碳水化合物抗原的鞘糖脂载体。
DOI: 10.1016/0167-4889(85)90106-5
发表时间: 1985
期刊: Biochimica et biophysica acta
影响因子: --
作者:
Uemura,K;Macher,BA;DeGregorio,M;Scudder,P;Buehler,J;Knapp,W;Feizi,T
通讯作者: Feizi,T
支链乳糖胺聚糖的结构,是从成人红细胞中分离出来的带 3 的碳水化合物部分。
DOI: --
发表时间: 1984
期刊: The Journal of biological chemistry
影响因子: --
作者:
Fukuda,M;Dell,A;Oates,JE;Fukuda,MN
通讯作者: Fukuda,MN
DOI: 10.1016/0006-291x(85)91158-1
发表时间: 1985
影响因子: 3.1
作者:
Tang,PW;Gool,HC;Hardy,M;Lee,YC;Feizi,T
通讯作者: Feizi,T
兔角膜基质硫酸蛋白角质素的单克隆抗体。
DOI: 10.3109/02713688508999966
发表时间: 1985
影响因子: 2
作者:
SundarRaj,N;Willson,J;Gregory,JD;Damle,SP
通讯作者: Damle,SP
DOI: --
发表时间: 1983
期刊: The Journal of biological chemistry
影响因子: --
作者:
Caterson,B;Christner,JE;Baker,JR
通讯作者: Baker,JR