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第43卷第2期 南京医科大学学报(自然科学版)
2023年2月 Journal of Nanjing Medical University(Natural Sciences) ·207 ·
·基础医学·
QPRT基因功能缺失对肾脏发育的影响
李晨星,周晓燕,张慕玲 *
南京医科大学附属淮安第一医院产前诊断中心,江苏 淮安 223300
[摘 要] 目的:研究喹啉磷酸核糖基转移酶(quinolinic phosphoribosyl transferase,QPRT)基因功能缺失对胚胎肾脏发育的影
+/+
响。方法:通过免疫组化确定 QPRT 在胎鼠肾脏组织的表达;构建 QPRT 基因缺陷型小鼠模型,取 QPRT (WT)型和 QPRT -/-
(KO)型小鼠的血清进行肾功能检测;称重法计算KO及WT组小鼠的体重、肾脏重量及肾脏系数;用HE染色观察小鼠及其子
代肾脏病理组织学变化。结果:在妊娠13 d胎鼠肾脏组织,QPRT 在发育中的输尿管芽中强烈表达。在基因敲除小鼠模型中,
QPRT 小鼠的肾脏系数(肾重/体重)显著低于野生型小鼠(P<0.05),且QPRT 小鼠的尿素氮、血肌酐、尿酸水平高于野生型组
-/-
-/-
(P < 0.05)。肾脏组织HE染色显示QPRT 仔鼠的肾脏实质部位局部呈现蜂窝状囊性扩张;QPRT 仔鼠见肾脏皮质间质局灶
+/-
-/-
性疏松水肿;QPRT 仔鼠肾脏未见明显病理组织学变化。结论:QPRT基因功能缺失可能影响胚胎肾脏发育。
+/+
[关键词] 先天性肾畸形;基因敲除;喹啉磷酸核糖转移酶
[中图分类号] R392.69 [文献标志码] A [文章编号] 1007⁃4368(2023)02⁃207⁃06
doi:10.7655/NYDXBNS20230208
Effects of QPRT gene loss⁃of⁃function on renal development
*
LI Chenxing,ZHOU Xiaoyan,ZHANG Muling
Department of Prenatal Diagnosis Center,the Affiliated Huaian No.1 People’s Hospital of Nanjing Medical
University,Huai’an 223000,China
[Abstract] Objective:To study the effect of functional deletion of quinoline phosphoribosyltransferase(QPRT)gene on fetal kidney
development. Methods:The expression of QPRT in fetal mouse kidney tissue was located by immunohistochemistry. The QPRT gene⁃
+/+ -/-
deficient mouse model was constructed,and the serum of QPRT (WT)and QPRT (KO)mice were collected for renal function
detection. The body weight,kidney weight and kidney coefficient of KO and WT mice were calculated by weighing method,and the
histopathological changes of kidney of mice and their offspring were observed by HE staining. Results:QPRT was strongly expressed
in developing ureteral buds in fetal mouse kidney at 13 days of gestation. The kidney coefficient(kidney weight/body weight)of QPRT -/-
-/-
mice was significantly lower than that of wild⁃type mice,and the levels of urea nitrogen,serum creatinine and uric acid of QPRT mice
were higher than those of wild⁃type mice(P < 0.05). HE staining of kidney tissue showed cellular cystic dilatation in renal parenchyma
of QPRT -/- offspring mice,QPRT +/- mice showed focal loose edema of renal cortex and interstitium;QPRT +/+ mice showed no obvious
histopathological changes in the kidneys. Conclusion:The loss of QPRT gene function may affect fetal kidney development.
[Key words] congenital renal malformation;gene knockout;quinoline phosphoribosyl transferase gene
[J Nanjing Med Univ,2023,43(02):207⁃212]
胎儿肾脏发育不良(renal hypodysplasia,RHD) 是临床常见的胎儿泌尿系统畸形(congenital anoma⁃
lies of the kidney and urinary tract,CAKUT),在活产
[基金项目] 南京医科大学科技发展基金(NMUB2019354);
儿中的发病率为 3‰~7‰,约占儿童慢性肾病和肾
吴阶平医学基金会临床科研专项资助基金(320.6755.15016);
[1]
衰竭病因的 70% ,严重影响患儿远期生活质量。
淮安市自然科学研究计划基金(HAB202108)
其表型主要有3类:①肾脏缺如,由胚胎期肾脏发育
∗
通信作者(Corresponding author),E⁃mail:13915117886@163.
com 未正常启动所致;②肾脏发育异常,肾脏含有未完