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我们报道了大鼠和人类cDNA的鉴定,这些cDNA编码一种含有新颖的六个半胱氨酸免疫球蛋白样结构域和黏蛋白结构域的I型膜蛋白,命名为肾损伤分子-1(KIM-1)。从结构上看,KIM-1是免疫球蛋白基因超家族的成员,与黏膜寻址细胞粘附分子1(MAdCAM-1)最为相似。人类KIM-1与一种新近鉴定为甲型肝炎病毒受体的猴基因(甲型肝炎病毒细胞受体1,HAVcr-1)同源。KIM-1 mRNA和蛋白在正常肾脏中表达水平较低,但在缺血后肾脏中显著升高。原位杂交和免疫组织化学显示,KIM-1在再生近曲小管中增殖的溴脱氧尿苷阳性及去分化的波形蛋白阳性上皮细胞中表达。结构和表达数据表明,KIM-1是上皮细胞黏附分子,在去分化及复制中的细胞中上调。KIM-1可能在恢复缺血后肾脏的形态完整性和功能中发挥重要作用。
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Takaharu Ichimura
Joseph V. Bonventre
Véronique Bailly
Journal of Biological Chemistry
Harvard University
Biogen (United States)
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Ichimura等人(Sun,)研究了这一问题。
www.synapsesocial.com/papers/69ff74e6b124fe58198570a1 — DOI: https://doi.org/10.1074/jbc.273.7.4135
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