Page 7 - 《南京医科大学学报(自然科学版)》2025年第9期
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第45卷第9期 南京医科大学学报(自然科学版)
2025年9月 Journal of Nanjing Medical University(Natural Sciences) ·1219 ·
·专题研究:肿瘤·
PARP1在K192位点的乳酸化抑制卵巢癌细胞的迁移和增殖
苏 宁 ,曹 颖 ,张淑平 ,吴少君 ,孙鸿展 ,唐雪俊 ,袁冬兰 ,张 东 ,杨莉莉 ,应小燕 2*
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南京医科大学生殖医学与子代健康全国重点实验室,江苏 南京 211166;南京医科大学第二附属医院妇科,江苏 南京
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210029;连云港市妇幼保健院妇科,江苏 连云港 222000;南京医科大学附属泰州人民医院妇科,江苏 泰州 225300
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[摘 要] 目的:卵巢癌(ovarian cancer,OC)在全球女性癌症中排名前列。许多研究在多个遗传调控水平上探究了OC的发
生和进展。但很少有研究探讨翻译后修饰(post⁃translation modification,PTM)对OC进展的影响,而这对发现新的治疗靶点至
关重要。本研究拟通过系统鉴定 OC 进展的关键 PTM 类型,探讨并评估其在治疗靶点的转化潜力。方法:首先,利用多种泛
PTM抗体来比较临床女性正常卵巢组织和OC组织之间的泛PTM水平。在鉴定出乳酸化为差异最显著的PTM后,选择代表性
的样品进行无标记质谱分析,以识别特定的乳酸化位点。随后用野生型(wild type,WT)PARP1⁃EGFP⁃STREPⅡ或其K192A突
变体转染A2780卵巢癌细胞,检测与增殖(克隆形成实验)、ROS水平和迁移(细胞划痕实验)相关的各种细胞指标。结果:临床
OC样本中的泛乳酸化水平显著上调,其中PARP1在K192位点的乳酸化是变化最为显著的PTM之一。PARP1⁃WT的过表达能
显著抑制OC细胞系A2780的生长和迁移活性,而K192A突变体则失去了这种抑制作用。此外,PARP1⁃WT过表达可显著下调
ERK1/2信号通路的磷酸化水平。结论:本研究发现并证实了OC中存在PARP1的新型PTM形式——乳酸化修饰,K192位点的
乳酸化通过ERK1/2途径调节OC细胞的生长和迁移。
[关键词] PARP1;乳酸化;迁移;增殖;卵巢癌细胞
[中图分类号] R737.31 [文献标志码] A [文章编号] 1007⁃4368(2025)09⁃1219⁃11
doi:10.7655/NYDXBNSN241251
Lactylation of PARP1 at K192 inhibits the migration and proliferation of ovarian cancer
cells
SU Ning ,CAO Ying ,ZHANG Shuping ,WU Shaojun ,SUN Hongzhan ,TANG Xuejun ,YUAN Donglan ,
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ZHANG Dong ,YANG Lili ,YING Xiaoyan 2*
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State Key Laboratory of Reproductive Medicine and Offspring Health,Nanjing Medical University,Nanjing 211166;
Department of Gynecology,the Second Affiliated Hospital of Nanjing Medical University,Nanjing 210029;
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3 Department of Gynecology,Lianyungang Maternal and Child Health Hospital,Lianyungang 222000;Department of
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Gynecology,Taizhou People’s Hospital Affiliated to Nanjing Medical University,Taizhou 225300,China
[Abstract] Objective:Ovarian cancer(OC)ranks among the leading causes of mortality among the female cancers worldwide.
Numerous studies have explored the development and progression of OC at multiple genetic regulatory levels. However,relatively few
studies have explored the impact of post⁃translational modifications(PTM)on OC progression,which is essential for uncovering new
therapeutic targets. This study aimed to systematically identify the key PTM types involved in OCprogression,and to explore and
evaluate their translational potential as therapeutic targets. Methods:First,we utilized multiple general PTM antibodies to compare
gross PTM levels between normal ovarian and OC tissues from clinical females. After identifying lactylation as the PTM with the most
significant differences,we selected representative samples for label⁃free mass spectrometry to identify specific lactylation sites. Next,
we transfected A2780(OC)cells with either wild ⁃ type(WT)or mutant(K192A[Q])poly(ADP ⁃ ribose)polymerase 1(PARP1)
conjugated to enhanced green fluorescent protein(EGFP)with a Strep Ⅱ peptide tag and assessed various cellular indexes related to
cell proliferation(clonogenicity assay),migration(scratch wound healing assay),and reactive oxygen species levels. Results:Pan⁃
[基金项目] 国家自然科学基金(32070840,32370912);江苏省妇幼健康重点学科基金(FXK201712)
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通信作者(Corresponding author),E⁃mail:xiaoyanying_cool@163.com(ORCID:0000⁃0003⁃0326⁃4987);elevenfox007@njmu.edu.cn
(ORCID:0009⁃0001⁃1584⁃2417);dong.ray.zhang@njmu.edu.cn(ORCID:0000⁃0002⁃0257⁃4441)

