Downregulation and CpG island hypermethylation of NES1/hK10 gene in the pathogenesis of human

The normal epithelial cell-specific-1(NES1)/Kallikrein 10 gene is proposed to be a novel putative tumor suppressor gene in several malignant diseases.The role of NES1 gene in gastric cancer has not been fully understood.Our study revealed that CpG island hypermethylation plays an important role in the downregulation of NES1 mRNA expression in gastric cancer.In situ hybridization showed that loss or reduction of NES1 mRNA expression is associated with differentiation level during tumor progression suggesting that NES1 inactivation might contribute to the malignant progression of human gastric cancers.

己糖激酶缺乏症1例报告并文献复习

目的探讨己糖激酶缺乏症的临床特点及基因变化。方法回顾分析1例己糖激酶缺乏症患儿的临床资料,并进行相关文献复习。结果男性患儿,6个月,临床表现为新生儿期高胆红素血症、非球形红细胞溶血性贫血、网织红细胞升高等。基因检查发现HK1存在2个杂合突变位点c.995+5G>A(内含子12)和c.2216G>C(外显子20);患儿父母均为复合杂合突变,c.995+5G>A来自父亲,c.2216G>C来自母亲。文献检索已有报道的32例患者,多表现为出生时贫血、新生儿黄疸及肝脾肿大,基因检测以HK1基因外显子和内含子核苷酸点突变为主。结论本例患儿为中国首例经基因检测确诊的已糖激酶缺乏症。临床疑似己糖激酶缺乏症时,应尽早进行基因检测。