kindlin-1在人牙龈上皮的分布特点及其临床意义

目的 探讨kindlin-1在人健康牙龈上皮与慢性炎症性牙龈上皮分布特点的差异,从而建立kindlin-1与牙周疾病的临床相关性.方法 应用免疫组织化学和免疫印迹法,分别检测10例正常牙龈上皮以及8例慢性炎症性牙龈上皮中kindlin-1的分布.结果 免疫组织化学结果显示,kindlin-1在正常牙龈上皮中主要分布于基底层细胞与上层颗粒层细胞,且在颗粒层细胞胞质中表达呈强阳性,而在基底上层细胞核内散在出现弱阳性表达;同时,kindlin-1在牙龈沟内上皮的表达明显高于游离龈上皮(P＜0.05);慢性炎症性牙龈上皮中kindlin-1较正常牙龈上皮分布更加广泛,表达也增强(P＜0.05).免疫印迹的结果进一步证实慢性炎症性牙龈的kindlin-1表达较正常牙龈上皮更加强烈(P＜0.05).结论 indlin-1在人牙龈上皮中的分布和表达与牙龈上皮分化和炎症状态均密切相关.

Mutations of integrin-interacting protein Kindlin-1 cause Kindler Syndrome and deregulation of Kindlin-1 is implicated in human cancers. The Kindlin-1-related diseases are confined in limited tissue types. However , Kindlin-1 tissue distribution and the dogma that governs Kindlin-1 expression in normal human body are elusive. This study examined Kindlin-1 expression in normal human adult organs, human and mouse embryonic or-gans by immunohistochemical analyses. We identified a general principle that the level of Kindlin-1 expression in tissues is tightly correlated with the corresponding germ layers from which these tissues are originated. We com-pared the expression of Kindlin-1 with Kindlin-2 and found that Kindlin-1 is highly expressed in epithelial tissues derived from ectoderm and endoderm, whereas Kindlin-2 is mainly expressed in mesoderm-derived tissues. Like-wise, Kindlin-1 was also found highly expressed in endoderm/ectoderm-derived tissues in human and mouse em-bryos. Our findings indicate that Kindlin-1 may play an importance role in the development of endoderm/ectoderm related tissues.

Kindlin-1在肝细胞性肝癌中的表达作用及其临床意义

目的 检测黏着斑蛋白(Kindlin-1)在肝细胞性肝癌(简称肝癌)中的表达,探讨其在肝癌转移中的临床意义.方法 收集58例肝癌组织和癌旁组织及7例正常肝组织,采用免疫组化染色、Western blot法和实时定量PCR(qRTPCR)法检测Kindlin-1的表达,分析Kindlin-1表达与肝癌临床病理特征之间的关系.结果 免疫组化染色显示Kindlin-1主要表达在细胞质中.肝癌组织中Kindlin-1阳性表达率为55％,显著高于癌旁组织的10％和正常肝组织的0％(x2=26.456、5.560,P＜0.05).Kindlin-1表达水平与肝癌大小和有无转移相关(x2=7.857、4.076,P＜0.05),而与患者性别、年龄、肿瘤有无包膜、Edmondson分级、血清甲胎蛋白(AFP)水平及乙肝表面抗原(HBsAg)等临床病理特征无明显关系.Western blot法和qRT-PCR检测结果显示肝癌组织中Kindlin-1相对含量显著高于癌旁组织和正常肝组织(P＜0.01).结论 Kindlin-1在肝癌组织中的表达高于癌旁组织及正常肝组织,且与肝癌大小和有无转移相关,提示Kindlin-1可能参与了肝癌的转移,可能作为肝癌转移的预测指标之一.