Mosaic pattern of lactase expression by villous enterocytes in human adult-type hypolactasia

Mosaic pattern of lactase expression by villous enterocytes in human adult-type hypolactasia
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人成人型低乳糖酶症中绒毛肠上皮细胞乳糖酶表达的马赛克模式

DOI:
10.1016/0016-5085(91)90203-w
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发表时间:
1991
期刊:
影响因子:
29.4
通讯作者:
S. Auricchio
S. Auricchio
中科院分区:
医学1区
文献类型:
--
作者:
L. Maiuri;V. Raia;J. Potter;D. Swallow;M. Ho;R. Fiocca;G. Finzi;M. Cornaggia;C. Capella;A. Quaroni;S. Auricchio

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免疫组织化学分析乳糖酶蛋白的表达在成人低乳糖已进行使用单克隆抗体。识别乳糖酶蛋白上至少三个不同表位的八种不同抗体都给出了相同的结果。在所有乳糖酶持续性成虫中观察到强烈的刷状缘染色。在9名低乳糖受试者中未检测到任何染色。在剩下的12个个体中,观察到表达的马赛克模式:小块的肠上皮细胞染色强烈,而周围区域则完全没有染色。相反,蔗糖异麦芽糖酶在这些人或其他任何人身上都没有表现出这种镶嵌现象。在12个低乳糖个体中观察到的嵌合现象表明柱状细胞沿着绒毛的分化是不均匀的。此外,在乳糖酶缺乏个体中存在两种乳糖酶蛋白表达模式(即,缺乏蛋白质和镶嵌现象),如果是所测试个体的整个肠长度的特征,则表明在所研究的群体中存在两种成人型乳糖缺乏症的表型。
Immunohistological analysis of the expression of lactase protein in adults with hypolactasia has been carried out using monoclonal antibodies. Eight different antibodies that recognize at least three distinct epitopes on the lactase protein each gave the same result. Strong brush border staining was observed in all the lactase-persistent adults. No staining at all was detected in 9 of the hypolactasic subjects. In the remaining 12 individuals a mosaic pattern of expression was observed: small patches of enterocytes stained strongly, whereas the surrounding areas showed no staining at all. Sucraseisomaltase, in contrast, showed no such mosaicism in these or in any of the other individuals. The mosaicism observed in the 12 hypolactasic individuals suggests that the differentiation of the columnar cells along the villus is not homogeneous. Furthermore, the existence of two patterns of expression of the lactase protein in the lactase-deficient individuals (i.e., absence of protein and mosaicism), if characteristic of the entire length of the intestine of the individuals tested, would suggest the existence of two phenotypes of adult-type hypolactasia in the population studied.
肠隐窝和绒毛细胞中蔗糖酶-异麦芽酶表达的翻译后调节。
DOI: --
发表时间: 1989
期刊: The Journal of biological chemistry
影响因子: --
作者:
Beaulieu,JF;Nichols,B;Quaroni,A
通讯作者: Quaroni,A
人结肠肿瘤细胞系中的隐窝细胞抗原表达:使用一组针对 CaCo-2 腔膜成分的单克隆抗体进行分析。
DOI: 10.1093/jnci/76.4.571
发表时间: 1986
期刊: Journal of the National Cancer Institute
影响因子: --
作者:
Quaroni,A
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含有肠脂肪酸结合蛋白-人生长激素融合基因的转基因小鼠在其小肠中表现出报告基因的正确区域和细胞特异性表达。
DOI: 10.1073/pnas.85.24.9611
发表时间: 1988
影响因子: 11.1
作者:
Sweetser,DA;Hauft,SM;Hoppe,PC;Birkenmeier,EH;Gordon,JI
通讯作者: Gordon,JI
DOI: 10.1073/pnas.86.4.1278
发表时间: 1989
影响因子: 11.1
作者:
Rubin,DC;Ong,DE;Gordon,JI
通讯作者: Gordon,JI