热带病与寄生虫学 ›› 2025, Vol. 23 ›› Issue (4): 245-248.doi: 10.20199/j.issn.1672-2302.2025.04.010

• 实验研究 • 上一篇    下一篇

新疆阿勒泰地区多房棘球蚴人体分离株nad2基因多态性分析

赵江山1(), 郭宝平2, 史光忠1, 亚里昆·买买提依明1, 阿迪力·司马义1, 王蒴1()   

  1. 1.新疆维吾尔自治区疾病预防控制中心新疆乌鲁木齐 830002
    2.新疆医科大学第一附属医院
  • 收稿日期:2025-04-01 出版日期:2025-08-20 发布日期:2025-09-19
  • 通信作者: 王蒴,E-mail: 490467434@qq.com
  • 作者简介:赵江山,男,硕士,高级实验师,研究方向:寄生虫病与布病预防控制。E-mail: zjscdc@163.com
  • 基金资助:
    新疆维吾尔自治区重点研发项目(2022B03013-1)

Polymorphism analysis of nad2 gene of Echinococcus multilocularis larvae isolates from human in Altay Prefecture of Xinjiang

ZHAO Jiangshan1(), GUO Baoping2, SHI Guangzhong1, YALIKUN Maimaitiyiming1, ADILI Simayi1, WANG Shuo1()   

  1. 1. Center for Disease Control and Prevention of Xinjiang Uygur Autonomous Region, Urumqi 830002, Xinjiang Uygur Autonomous Region, China
    2. The First Affiliated Hospital of Xinjiang Medical University
  • Received:2025-04-01 Online:2025-08-20 Published:2025-09-19
  • Contact: WANG Shuo, E-mail: 490467434@qq.com

摘要:

目的 了解新疆阿勒泰地区多房棘球蚴人体分离株的基因型及遗传多样性,为当地多房棘球蚴病的防控提供理论依据。方法 收集2021—2024年新疆医科大学第一附属医院收治的阿勒泰地区多房棘球蚴病患者手术切除的肝脏病灶组织,提取组织DNA,采用PCR法对nad2基因进行扩增、测序。将测序成功的基因序列上传NCBI网站进行Blast比对,运用DnaSP 5软件进行nad2基因多态性分析,应用NetWork 10绘制单倍型网络图,利用MEGA 11软件中的neighbor-joining法建立nad2基因系统进化树。结果 共获得36份肝脏病灶组织,经PCR扩增,36份样本均在882 bp处出现特异性条带,符合预期大小。基因多态性结果显示,nad2基因共有3种单倍型,属于亚洲群,单倍型多样性为0.341,核苷酸多样性为0.000 76,Hap1为主要单倍型(29/36,占80.56%)。系统进化树显示,分离株与中国新疆新源县(KT965464)、哈萨克斯坦(AB461406)、波兰(KY205700)、加拿大(MT429276)、日本北海道(AB461407)和中国四川省(AB461408)等地多房棘球绦虫参考序列具有较近亲缘关系。结论 阿勒泰地区人体感染多房棘球绦虫属于亚洲群,遗传上较为保守,优势单倍型为Hap1。

关键词: 多房棘球蚴, nad2基因, 基因多态性, 新疆阿勒泰地区

Abstract:

Objective To understand the genotype and genetic diversity of Echinococcus multilocularis larvae isolates from human in Altay Prefecture of Xinjiang, and to provide a theoretical basis for the prevention and control of alveolar echinococcosis (AE). Methods The liver lesion tissues were obtained from patients with AE in Altay Prefecture of Xinjiang who were treated in the First Affiliated Hospital of Xinjiang Medical University between 2021 and 2024, and from which the tissue DNA was extracted. The nad2 gene was amplified and sequenced by PCR. The successfully sequenced gene sequence was uploaded to the NCBI website for Blast comparison, the nad2 gene polymorphism was analyzed using DnaSP 5 software, the haplotype network diagram was drawn by NetWork 10, and the nad2 gene phylogenetic tree was established by using the neighbor-joining method in MEGA 11 software. Results A total of 36 liver lesion tissues were obtained. After PCR amplification, specific bands at 882 bp were observed in all 36 samples, which was in line with the expected size. The results of gene polymorphism showed that there were three haplotypes in nad2 gene belong to the Asian clade, with a haplotype diversity of 0.341 and nucleotide diversity of 0.000 76. The Hap1 was the main haplotype (29/36, 80.56%). The systematic evolution tree showed that the isolates have a close kinship with the reference sequences of Echinococcus multilocularis from Xinyuan County of Xinjiang (KT965464), Kazakhstan (AB461406), Poland (KY20700), Canada (MT429276), Hokkaido of Japan (AB461407) and Sichuan (AB461408). Conclusion Human Echinococcus multilocularis isolated from subjects in Altay Prefecture of Xinjiang belongs to Asian clade, and is genetically relatively conserved. The dominant haplotype of it is Hap1.

Key words: Echinococcus multilocularis larvae, Nad2 gene, Gene polymorphism, Altay Prefecture of Xinjiang

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