Suppr超能文献

对来自不同种族和起源的患有卡波氏肉瘤疱疹病毒(KSHV)相关疾病的个体的 KSHV 基因组进行测序,表明存在多种感染、新的多态性和低宿主内变异。

Sequencing of Kaposi's Sarcoma Herpesvirus (KSHV) genomes from persons of diverse ethnicities and provenances with KSHV-associated diseases demonstrate multiple infections, novel polymorphisms, and low intra-host variance.

机构信息

Viral Oncology Section, AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Frederick, Maryland, United States of America.

Retroviral Evolution Section, AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Frederick, Maryland, United States of America.

出版信息

PLoS Pathog. 2024 Jul 15;20(7):e1012338. doi: 10.1371/journal.ppat.1012338. eCollection 2024 Jul.

Abstract

Recently published near full-length KSHV genomes from a Cameroon Kaposi sarcoma case-control study showed strong evidence of viral recombination and mixed infections, but no sequence variations associated with disease. Using the same methodology, an additional 102 KSHV genomes from 76 individuals with KSHV-associated diseases have been sequenced. Diagnoses comprise all KSHV-associated diseases (KAD): Kaposi sarcoma (KS), primary effusion lymphoma (PEL), KSHV-associated large cell lymphoma (KSHV-LCL), a type of multicentric Castleman disease (KSHV-MCD), and KSHV inflammatory cytokine syndrome (KICS). Participants originated from 22 different countries, providing the opportunity to obtain new near full-length sequences of a wide diversity of KSHV genomes. These include near full-length sequence of genomes with KSHV K1 subtypes A, B, C, and F as well as subtype E, for which no full sequence was previously available. High levels of recombination were observed. Fourteen individuals (18%) showed evidence of infection with multiple KSHV variants (from two to four unique genomes). Twenty-six comparisons of sequences, obtained from various sampling sites including PBMC, tissue biopsies, oral fluids, and effusions in the same participants, identified near complete genome conservation between different biological compartments. Polymorphisms were identified in coding and non-coding regions, including indels in the K3 and K15 genes and sequence inversions here reported for the first time. One such polymorphism in KSHV ORF46, specific to the KSHV K1 subtype E2, encoded a mutation in the leucine loop extension of the uracil DNA glycosylase that results in alteration of biochemical functions of this protein. This confirms that KSHV sequence variations can have functional consequences warranting further investigation. This study represents the largest and most diverse analysis of KSHV genome sequences to date among individuals with KAD and provides important new information on global KSHV genomics.

摘要

最近发表的喀麦隆卡波氏肉瘤病例对照研究的近乎完整的 KSHV 基因组显示出强烈的病毒重组和混合感染证据,但没有与疾病相关的序列变异。使用相同的方法,对 76 名患有 KSHV 相关疾病的个体的另外 102 个 KSHV 基因组进行了测序。诊断包括所有 KSHV 相关疾病 (KAD):卡波氏肉瘤 (KS)、原发性渗出性淋巴瘤 (PEL)、KSHV 相关大细胞淋巴瘤 (KSHV-LCL)、一种多中心性 Castleman 病 (KSHV-MCD) 和 KSHV 炎症细胞因子综合征 (KICS)。参与者来自 22 个不同的国家,有机会获得广泛多样性的 KSHV 基因组的新近乎完整序列。这些包括 KSHV K1 亚型 A、B、C 和 F 以及以前没有完整序列的亚型 E 的近乎完整序列。观察到高水平的重组。14 名个体 (18%) 有证据表明感染了多种 KSHV 变体 (从两种到四种独特的基因组)。在来自同一参与者的 PBMC、组织活检、口腔液和渗出液等各种采样部位进行的 26 次序列比较中,发现不同生物隔室之间的近乎完整基因组保守性。在编码和非编码区域中鉴定出多态性,包括 K3 和 K15 基因中的插入缺失和此处首次报道的序列反转。KSHV ORF46 中的一个多态性,特定于 KSHV K1 亚型 E2,编码尿嘧啶 DNA 糖基化酶的亮氨酸环延伸中的突变,导致该蛋白的生化功能改变。这证实了 KSHV 序列变异可能具有功能后果,值得进一步研究。本研究代表了迄今为止 KAD 个体中 KSHV 基因组序列的最大和最多样化分析,并提供了有关全球 KSHV 基因组学的重要新信息。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6b31/11271956/846aaf858b14/ppat.1012338.g001.jpg

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验