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首页> 外文期刊>Journal of insect biotechnology and sericology >Co-localization of two alkaline phosphatases at the brush border of the columnar cells in the larval midgut of the silkworm, Bombyx mori
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Co-localization of two alkaline phosphatases at the brush border of the columnar cells in the larval midgut of the silkworm, Bombyx mori

机译：两种碱性磷酸酶在蚕幼虫中肠柱状细胞的刷状边缘共定位，Bombyx mori

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© 2021, Japanese Society of Sericultural Sciences. All rights reserved.Alkaline phosphatases (ALP) can be found widely from bacteria to human, of which common ancestral gene evolved only once in prokaryote, and are thought to play essential roles for the living organisms. But the biologi-cal significance of ALPs is not fully elucidated. In order to clarify the fine characteristic of ALPs in insects, we examined localization of the two isozymes, membrane-bound ALP (mALP) and soluble ALP (sALP), in the larval midgut of the silkworm, Bombyx mori. By immunohistochemical analyses with null mutants, we found the two enzymes are co-localized to the brush border of the columnar cells at the posterior portion of the larval midgut. sALP was detected not only in the cavity of the goblet cell, but also at the brush border of the columnar cells, while mALP was located only to the latter. This coexistence and a tendency of compensation between their doses suggest, at least some functional overlapping of the two ALPs.
机译：© 2021年，日本蚕桑学会。保留所有权利。碱性磷酸酶（ALP）广泛存在于细菌和人类中，其中共同的祖先基因在原核生物中只进化过一次，被认为对生物体起着至关重要的作用。但ALPs的生物学意义尚未完全阐明。为了阐明昆虫中ALPs的精细特征，我们研究了两种同工酶膜结合ALP（mALP）和可溶性ALP（sALP）在家蚕Bombyx mori幼虫中肠的定位。通过对无效突变体的免疫组织化学分析，我们发现这两种酶共定位于幼虫中肠后部柱状细胞的刷状边缘。不仅在杯状细胞的腔中检测到sALP，而且在柱状细胞的刷状边缘检测到sALP，而mALP仅位于后者。这种共存和剂量之间的补偿趋势表明，两种ALP至少在功能上存在一些重叠。

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