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BRIDGING LINGUISTIC AND CULTURAL DIVIDES IN PSYCHIATRIC GENOMICS RESEARCH: LESSONS FROM UGANDA 在精神疾病基因组学研究中弥合语言和文化鸿沟:乌干达的经验教训
IF 6.1 2区 医学 Q1 CLINICAL NEUROLOGY Pub Date : 2024-10-01 DOI: 10.1016/j.euroneuro.2024.08.101
Allan Kalungi , Segun Fatumo
Psychiatric genomics research tools frequently depend on terminology and notions that are predominantly derived from Western viewpoints, specifically designed for populations speaking English in Europe and the United States of America. Nevertheless, there is an increasing interest in incorporating African populations into genetic studies, as African genetic data possess significant potential for enhancing discovery in psychiatric genetics research. However, this undertaking has unique difficulties, including inefficiently conveying intricate genetic and psychiatric ideas and terminology to participants using their native African languages. The absence of obvious counterparts for terms such as "trauma" or "genome" necessitates the need for unique strategies to overcome linguistic barriers.
In 2011, we established the Uganda Genome Resource (UGR) – a well-characterized genomic database with a range of phenotypes for communicable and non-communicable diseases and risk factors generated from the Uganda General Population Cohort (GPC), a population-based open cohort. The UGR comprises genotype data on ∼5,000 and whole-genome sequence data on ∼2,000 Ugandan GPC individuals from 10 ethno-linguistic groups. We have since extended UGR to include studies focusing primarily on mental health conditions including major depressive disorder, post-traumatic stress disorder, generalized anxiety disorder, alcohol misuse and suicidality, among others.
To mitigate against the barrier poised by research tools which were developed in a foreign language to the participants, first, we engage the service of a professional linguistic translator to ensure accurate translation of all study materials. Additionally, we provide cultural sensitivity training to researchers to ensure respectful and ethical interactions with participants from diverse ethno-linguistic backgrounds. Secondly, following the translated study material, we set up a series of workshop including mental health experts and leading psychiatric geneticists and local scientists to agree on the translated content. Thirdly, we ask an independent local scientist to conduct a reverse translation of the study materials to ensure accuracy and consistency in the translated versions. This thorough process helps to minimize any potential misunderstandings or misinterpretations that may arise during the research study.
精神病基因组学研究工具经常依赖于主要源自西方观点的术语和概念,这些术语和概念是专门为讲英语的欧洲和美国人设计的。尽管如此,人们对将非洲人群纳入遗传学研究的兴趣与日俱增,因为非洲遗传学数据在提高精神病遗传学研究发现方面具有巨大潜力。然而,这项工作有其独特的困难,包括无法有效地用非洲母语向参与者传达复杂的遗传学和精神病学观点和术语。2011 年,我们建立了乌干达基因组资源(UGR)--一个特征明确的基因组数据库,其中包含一系列传染性和非传染性疾病的表型以及风险因素,这些数据来自乌干达普通人群队列(GPC),这是一个基于人群的开放式队列。UGR 包括来自 10 个民族语言群体的 5,000 多名乌干达普通人群的基因型数据和 2,000 多名乌干达普通人群的全基因组序列数据。此后,我们将 UGR 扩展到主要关注精神健康状况的研究,包括重度抑郁障碍、创伤后应激障碍、广泛性焦虑障碍、酒精滥用和自杀倾向等。为了减少以外语开发的研究工具给参与者带来的障碍,首先,我们聘请了专业的语言翻译服务,以确保所有研究材料的准确翻译。此外,我们还为研究人员提供文化敏感性培训,以确保他们与来自不同民族语言背景的参与者进行相互尊重和符合道德规范的互动。其次,在翻译好研究材料后,我们会召开一系列研讨会,包括心理健康专家、知名精神遗传学家和当地科学家,就翻译内容达成一致意见。第三,我们请一位独立的当地科学家对研究材料进行逆向翻译,以确保翻译版本的准确性和一致性。这一彻底的过程有助于最大限度地减少研究过程中可能出现的任何误解或曲解。
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引用次数: 0
UNCOVERING THE GENETIC AND BIOLOGICAL UNDERPINNINGS OF SCHIZOPHRENIA 揭示精神分裂症的基因和生物学基础
IF 6.1 2区 医学 Q1 CLINICAL NEUROLOGY Pub Date : 2024-10-01 DOI: 10.1016/j.euroneuro.2024.08.038
Tao Li (Chair) , Fang Liu (Co-chair) , Zafiris Daskalakis (Discussant)
This symposium will feature cutting-edge research that leverages diverse genomic approaches to elucidate the complex etiology of schizophrenia. The presentations will span large-scale genetic association studies, novel sequencing technologies, and investigations of the gut microbiome - all with the goal of advancing our fundamental understanding of this debilitating psychiatric disorder.
The symposium will begin with a report on the largest genome-wide association study (GWAS) of schizophrenia conducted in an Eastern Asian population to date. The speaker will present findings on newly identified risk loci that provide insights into the unique genetic architecture of schizophrenia in this understudied ancestral group. Next, researchers will share results from a study utilizing long-read sequencing technology to comprehensively catalog de novo mutations in schizophrenia parent-offspring trios. This high-resolution approach has uncovered rare, disruptive variants missed by short-read sequencing that may confer substantial risk for the disorder. The symposium will also feature an investigation of the gut microbiome and its potential role in schizophrenia pathogenesis. The speaker will discuss metagenomic analyses revealing distinct microbiota signatures associated with the disease state, suggesting gut-brain axis mechanisms worthy of further exploration. Finally, the symposium will conclude with functional experiments probing the biological impact of D2R-DISC1 complex on antipsychotic treatment. The speaker will share findings from a comprehensive investigation using both patient-derived samples and mouse models of schizophrenia. Through a combination of proteomic analyses, pharmacological manipulations, and advanced molecular techniques, the researchers have uncovered novel insights into how the D2R-DISC1 signaling axis contribute to treatment response in schizophrenia.
Collectively, this symposium will showcase innovative genomic and experimental approaches that are revolutionizing our understanding of schizophrenia's complex etiology. The findings presented will inspire new hypotheses and accelerate the translation of genetic discoveries into improved diagnostic tools and targeted therapeutic strategies.
本次研讨会将介绍利用各种基因组学方法阐明精神分裂症复杂病因的前沿研究。演讲内容将涵盖大规模遗传关联研究、新型测序技术和肠道微生物组调查--所有这些研究的目的都是为了增进我们对这种使人衰弱的精神疾病的基本了解。研讨会首先将报告迄今为止在东亚人群中开展的最大规模精神分裂症全基因组关联研究(GWAS)。发言人将介绍新发现的风险基因位点的研究成果,这些研究成果有助于深入了解这一研究不足的祖先群体中精神分裂症的独特遗传结构。接下来,研究人员将分享一项研究的成果,该研究利用长读测序技术对精神分裂症父母-后代三人中的新突变进行了全面编目。这种高分辨率的方法发现了短线程测序所遗漏的罕见的破坏性变异,这些变异可能会导致精神分裂症的重大风险。本次研讨会还将探讨肠道微生物组及其在精神分裂症发病机制中的潜在作用。发言人将讨论元基因组分析揭示的与疾病状态相关的独特微生物群特征,提出值得进一步探索的肠道-大脑轴机制。最后,研讨会将以探究 D2R-DISC1 复合物对抗精神病治疗的生物学影响的功能实验作为结束。演讲者将分享利用患者样本和精神分裂症小鼠模型进行综合研究的结果。通过结合蛋白质组分析、药理学操作和先进的分子技术,研究人员揭示了D2R-DISC1信号轴如何促进精神分裂症治疗反应的新见解。本次研讨会将共同展示创新的基因组学和实验方法,这些方法正在彻底改变我们对精神分裂症复杂病因的认识。本次研讨会将展示创新的基因组学和实验方法,这些方法正在彻底改变我们对精神分裂症复杂病因学的认识。这些发现将启发我们提出新的假设,并加速将基因发现转化为更好的诊断工具和有针对性的治疗策略。
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引用次数: 0
OVER A DECADE OF STUDIES IN BIPOLAR DISORDER HIGH RISK POPULATIONS: WHAT HAVE WE LEARNT AND WHAT ARE THE GAPS? 十多年来对躁狂症高危人群的研究:我们学到了什么,还有哪些不足?
IF 6.1 2区 医学 Q1 CLINICAL NEUROLOGY Pub Date : 2024-10-01 DOI: 10.1016/j.euroneuro.2024.08.018
Philip Mitchell (Chair) , John Nurnberger (Co-chair) , Fernando Goes (Discussant)
Bipolar disorder (BD) is a highly familial condition, with a heritability of at least 70%, and with10-15% of first-degree relatives developing this illness. Unlike schizophrenia, there is no distinct prodromal (ultra high-risk) syndrome, making development of early intervention treatment programs difficult. Studies of high-risk young people with a family history of BD provide the potential for identifying clinical and/or biological changes that either predate or occur early in the development of BD, thereby presenting targets for early intervention therapies. This symposium will focus on what has been learnt from over a decade of BD high-risk studies globally, and what remains unknown or uncertain. Speakers will address these issues from both their own cohorts and the field more broadly. This symposium will comprise presentations by:
  • i)
    John Nurnberger - Emeritus Professor, University of Indiana, USA. He led the NIMH Genetics Initiative Bipolar Group. His group has been active in the Bipolar Genome Study Consortium and in the Psychiatric Genomics Consortium. He established the US BD high-risk consortium, with sites at the universities of Indianapolis and Michigan, as well as Johns Hopkins University;
  • ii)
    Janice Fullerton - Principal Research Scientist at Neuroscience Research Australia and Conjoint Associate Professor, University of New South Wales in Sydney, Australia. Jan will present genetics and neuroimaging data from the Australian Bipolar Kids and Sibs high-risk cohort;
  • iii)
    Kathryn Freeman is a Research Assistant on the FORBOW Project, and PhD Student in Medical Neuroscience at Dalhousie University, Canada. Kate will present on bipolar disorder offspring findings from the FORBOW study; and
  • iv)
    Philip Mitchell - Professor of Psychiatry at the University of New South Wales in Sydney who established the Australian Bipolar Kids and Sibs high-risk cohort. He will present findings from the 10-year follow-up of this sample.
躁郁症(BD)是一种高度家族性疾病,遗传率至少为 70%,10%-15% 的一级亲属会患上这种疾病。与精神分裂症不同,躁郁症没有明显的前驱期(超高危)综合征,因此很难制定早期干预治疗方案。对有 BD 家族史的高危青少年进行研究,有可能发现 BD 发病前或发病早期的临床和/或生物学变化,从而为早期干预治疗提供目标。本次研讨会将重点讨论十多年来全球范围内开展的BD高风险研究的成果,以及仍存在的未知或不确定因素。发言者将从各自的队列和更广泛的领域来探讨这些问题。本次研讨会将包括以下演讲:i) John Nurnberger - 美国印第安纳大学名誉教授。他领导了美国国立卫生研究院遗传学计划躁郁症小组。他领导的小组一直活跃在双相情感基因组研究联盟和精神病基因组学联盟中。他建立了美国躁郁症高风险联盟,在印第安纳波利斯大学、密歇根大学和约翰霍普金斯大学设立了研究基地;ii) Janice Fullerton - 澳大利亚神经科学研究中心首席研究科学家,澳大利亚悉尼新南威尔士大学联合副教授。Jan 将介绍澳大利亚躁郁症儿童和兄弟姐妹高危人群的遗传学和神经影像学数据;iii)Kathryn Freeman 是 FORBOW 项目的研究助理,也是加拿大达尔豪西大学医学神经科学专业的博士生。凯特将介绍FORBOW研究中关于双相情感障碍后代的发现;iv)菲利普-米切尔(Philip Mitchell)--悉尼新南威尔士大学精神病学教授,他建立了澳大利亚双相情感障碍儿童和兄弟姐妹高风险队列。他将介绍对该样本进行 10 年跟踪调查的结果。
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引用次数: 0
RESOLVING THE CHALLENGES OF BIG-DATA IMAGING GENETICS ANALYSIS TO UNDERSTAND GENETIC AND ENVIRONMENTAL RISK FACTORS IN PSYCHIATRIC DISORDERS 解决大数据成像遗传学分析的难题,了解精神疾病的遗传和环境风险因素
IF 6.1 2区 医学 Q1 CLINICAL NEUROLOGY Pub Date : 2024-10-01 DOI: 10.1016/j.euroneuro.2024.08.056
Peter Kochunov , Tom Nichols , John Blangero , Sarah Medland , David Glahn , Elliot Hong
Worldwide efforts have led to large and inclusive imaging genetics datasets enabling examination of the contribution of genetic and environmental factors to development, clinical course and treatment effectiveness in psychiatric disorders. These datasets combine high-resolution neuroimaging and genetic data in large and inclusive samples. Classical genetic analyses can help to parse the variance in disorder-related brain patterns into additive genetic, specific SNP, household and environmental causes. Performing these inquiries at full imaging and genetic resolution is a formidable computational task where the computational complexity of classical genetic analyses rises as a square or cube of the sample size. We describe fast, non-iterative simplifications to accelerate classical variance component (VC) methods including heritability, genetic correlation, and genome-wide association in dense and complex empirical pedigrees derived in samples such as UKBB, HCP and ABCD. These approaches linearize computational effort while maintaining approximation fidelity (r∼0.95) with VC results and take advantage of parallel computing provided by central and graphics processing units (CPU and GPU). We show that the new approaches can help to tract the nature vs. nurture interaction in the development of major depressive disorder and psychosis in the longitudinal datasets such as ABCD. We also show how specific genetic risk factors for Alzheimer disease can interact with environment leading to development of brain patterns that are predictive of the risk of development of dementia.
在全球范围内的努力下,我们建立了大型、包容性成像遗传学数据集,从而能够研究遗传和环境因素对精神疾病的发展、临床过程和治疗效果的影响。这些数据集将高分辨率神经成像和遗传数据结合在一起,样本量大且范围广。经典的遗传分析有助于将与失调相关的大脑模式的变异解析为遗传、特定 SNP、家庭和环境因素的叠加。在全成像和遗传分辨率下进行这些研究是一项艰巨的计算任务,经典遗传分析的计算复杂度会随着样本量的平方或立方而上升。我们介绍了快速、非迭代简化方法,以加快经典方差分析方法(VC)的速度,包括遗传率、遗传相关性和全基因组关联,这些方法适用于从 UKBB、HCP 和 ABCD 等样本中获得的密集而复杂的经验谱系。这些方法将计算工作线性化,同时与遗传变异结果保持近似保真度(r∼0.95),并利用中央处理器和图形处理器(CPU 和 GPU)提供的并行计算优势。我们的研究表明,在 ABCD 等纵向数据集中,新方法有助于揭示重度抑郁障碍和精神病发展过程中自然与后天的相互作用。我们还展示了阿尔茨海默病的特定遗传风险因素如何与环境相互作用,从而形成可预测痴呆症发病风险的大脑模式。
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引用次数: 0
STANDARDIZE QC PROCEDURE FOR SCRNA-SEQ 规范 SCNA SEQ 的 QC 程序
IF 6.1 2区 医学 Q1 CLINICAL NEUROLOGY Pub Date : 2024-10-01 DOI: 10.1016/j.euroneuro.2024.08.025
Shansha Peng , Chunyu Liu
Single-cell RNA sequencing (scRNA-seq) has emerged as a pivotal technology for dissecting cellular heterogeneity and function. In an effort to assess the consistency and rigor of quality control (QC) measures across scRNA-seq studies, we systematically reviewed publications from high-impact journals, including Cell, Nature, Science, and their major sister journals. Our analysis revealed a lack of standardization in QC procedures, with significant variability in the parameters employed. Despite general agreement on the necessity of certain QC steps, such as the removal of low-quality cells and the detection of doublets, the specific criteria for these steps were often arbitrarily defined and not universally applied. Notably, the assessment of ambient RNA contamination and the precision of gene expression measurements were frequently overlooked, potentially leading to the inclusion of spurious data in downstream analyses. To address these inconsistencies, we propose a revised set of QC procedures and parameters, which yielded distinct results compared to the original publications when applied to existing datasets. Moreover, we also assessed the performance of the existing data-driven QC tools in distinguishing the low-quality cells from the high-quality cells. Our findings underscore the urgent need for a standardized approach to QC in scRNA-seq to ensure the reliability and reproducibility of biological insights derived from this powerful technology.
单细胞 RNA 测序(scRNA-seq)已成为剖析细胞异质性和功能的关键技术。为了评估scRNA-seq研究中质量控制(QC)措施的一致性和严谨性,我们系统地查阅了《细胞》、《自然》、《科学》等高影响力期刊及其主要姊妹期刊上发表的论文。我们的分析表明,质控程序缺乏标准化,所采用的参数差异很大。尽管大家普遍认为某些质控步骤是必要的,如去除低质量细胞和检测双顶体,但这些步骤的具体标准往往是随意定义的,并没有得到普遍应用。值得注意的是,对环境 RNA 污染和基因表达测量精度的评估经常被忽视,这可能导致下游分析中包含虚假数据。为了解决这些不一致的问题,我们提出了一套经过修订的质量控制程序和参数,在应用于现有数据集时,其结果与原始出版物的结果截然不同。此外,我们还评估了现有数据驱动质控工具在区分低质量细胞和高质量细胞方面的性能。我们的研究结果突出表明,迫切需要一种标准化的方法来对 scRNA-seq 进行质量控制,以确保从这项强大的技术中获得的生物学见解的可靠性和可重复性。
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引用次数: 0
PRECISION AND ACCURACY IN SINGLE-CELL RNA-SEQ 单细胞 rna-seq 的精度和准确性
IF 6.1 2区 医学 Q1 CLINICAL NEUROLOGY Pub Date : 2024-10-01 DOI: 10.1016/j.euroneuro.2024.08.054
Rujia Dai , Ming Zhang , Tianyao Chu , Richard Kopp , Chunling Zhang , Kefu Liu , Yue Wang , Xusheng Wang , Chao Chen , Chunyu Liu
Single-cell/nuclei RNA sequencing (sc/snRNA-seq) is widely used for profiling cell-type gene expression in brain research. An important but frequently underappreciated issue is the data quality in terms of precision and accuracy. We evaluated precision using data from 14 human brain studies with a total of 3,483,905 cells from 297 individuals, with technical replicates based on random grouping of cells of the same type from the same individual. We also evaluated accuracy with sample-matched scRNA-seq and pooled-cell RNA-seq data of cultured mononuclear phagocytes from four species. Low precision and accuracy at the single-cell level across all evaluated data were observed. Cell number was highlighted as a key factor determining the expression precision, accuracy, and reproducibility of differential expression analysis in sc/snRNA-seq. A high missing rate is likely the cause of the quantification quality problem. Downstream analysis results are severely affected by the expression quality issue. Many false findings can be produced when the noises are not properly controlled. This study underscores the necessity of sequencing enough cells per cell type per individual, preferably in the hundreds, to mitigate noise in expression quantification. Pseudo-bulk aggregation of expression data over cells of the same type is required when the high-quality expression quantification is desired.
单细胞/核RNA测序(sc/snRNA-seq)被广泛应用于脑科学研究中的细胞型基因表达谱分析。一个重要但经常被忽视的问题是精度和准确性方面的数据质量。我们利用来自 14 项人脑研究的数据评估了精确度,这些数据来自 297 个个体的 3,483,905 个细胞,技术重复是基于来自同一个体的同类型细胞的随机分组。我们还评估了样本匹配的 scRNA-seq 和来自四个物种的培养单核吞噬细胞的集合细胞 RNA-seq 数据的准确性。在所有评估数据中,单细胞水平的精确度和准确度都很低。细胞数量是决定 sc/snRNA-seq 差异表达分析的表达精度、准确性和可重复性的关键因素。高缺失率可能是量化质量问题的原因。下游分析结果会受到表达质量问题的严重影响。如果噪声控制不当,就会产生许多错误的结果。这项研究强调,必须为每个个体的每种细胞类型测序足够多的细胞,最好是数百个,以减少表达定量中的噪声。如果希望获得高质量的表达定量,则需要对同一类型细胞的表达数据进行伪大量聚合。
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引用次数: 0
IDEA COMMITTEE PLENARY PLACEHOLDER 创意委员会全体会议占位符
IF 6.1 2区 医学 Q1 CLINICAL NEUROLOGY Pub Date : 2024-10-01 DOI: 10.1016/j.euroneuro.2024.08.094
Jehannine Austin (Speaker)
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引用次数: 0
HARNESSING GENOMIC DATA FOR PRECISION MEDICINE IN ALZHEIMER'S DISEASE: CHALLENGES AND OPPORTUNITIES 利用基因组数据对阿尔茨海默病进行精准医疗:挑战与机遇
IF 6.1 2区 医学 Q1 CLINICAL NEUROLOGY Pub Date : 2024-10-01 DOI: 10.1016/j.euroneuro.2024.08.055
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引用次数: 0
UNRAVELING THE ROLE OF DE NOVO STRUCTURAL VARIANTS IN SCHIZOPHRENIA THROUGH COMPREHENSIVE WHOLE GENOME SEQUENCING WITH LONG-READ AND SHORT-READ TECHNOLOGIES 利用长线程和短线程技术进行全面的全基因组测序,揭示新结构变异在精神分裂症中的作用
IF 6.1 2区 医学 Q1 CLINICAL NEUROLOGY Pub Date : 2024-10-01 DOI: 10.1016/j.euroneuro.2024.08.040
Yamin Zhang , Tong Li , Shaozhong Yang , Zhi Xie , Tao Li
<div><h3>Backgrounds</h3><div>Genetic liability to schizophrenia involves various types of mutations from across the allele frequency spectrum and distributed across the genome. Findings from studies focusing on different types of mutations in schizophrenia converge partially on the same biological processes, while also providing complementary insights. This underscores the importance of studying the full spectrum of mutation. However, currently widely used genotyping technologies, microarrays and short read sequencing (SRS), have limited ability in detecting medium-sized structural variations (SVs) (e.g. 50-2000bp) compared to long-read sequencing (LRS), which is relatively new and has been rarely applied to genetic studies of schizophrenia so far, suggesting an opportunity to leverage this more comprehensive approach to uncover additional sources of genetic variation that may contribute to the disorder.</div></div><div><h3>Methods</h3><div>Utilizing both 20X LRS and 30X SRS, we performed comprehensive whole-genome analysis on 40 Han Chinese parent-offspring trios. We called single nucleotide variants (SNVs), insertions and deletions (indels), and SVs utilizing multiple algorithms. Our primary focus was on the detection and validation of de novo mutations (DNMs). Comparative analysis between LRS and SRS was conducted to assess their respective abilities in detecting SVs and de novo SVs. Subsequently, we annotated the de novo mutations and delved into their potential mechanisms in schizophrenia through mining public databases and conducting functional experiments. Finally, we compared the diagnostic yield of our approach to previous studies employing whole exome sequencing or whole genome sequencing using SRS.</div></div><div><h3>Results</h3><div>Our analysis identified an average of 71.55 DNMs per proband, including 12 de novo SVs. Notably, four of these de novo SVs were detected by more than three out of four algorithms employed for LRS, whereas none were detected by any of the four algorithms utilized for SRS. In addition, our analysis revealed a 2.8Mb region exclusively accessible via by LRS and not SRS. LRS demonstrated exceptional performance in phasing, while the call sets derived from both LRS and SRS exhibited comparable levels of Mendelian consistency. Of particular interest in our study is a de novo 11kb deletion encompassing the last intron, last exon, and 3’ UTR of PPP3CA. Through experimental investigations, we discovered a significant reduction in PPP3CA protein levels in blood cells from the schizophrenia patient harboring this DNM. Similar reductions in PPP3CA protein levels were also observed in HEK293T cell lines carrying a comparable mutation, indicating that the down regulation of PPP3CA results from the identified de novo SV. Subsequently, in mice model with targeted knockdown of PPP3CA in excitatory neurons within the hippocampus, we observed alterations indicative of schizophrenia-like behavior and impaired cognitive funct
背景精神分裂症的遗传易感性涉及来自等位基因频率谱和分布于整个基因组的各种类型的突变。针对精神分裂症不同类型突变的研究结果部分趋同于相同的生物学过程,同时也提供了互补的见解。这凸显了研究全基因突变谱的重要性。然而,目前广泛使用的基因分型技术--微阵列和短读测序(SRS)--在检测中等大小的结构变异(SVs)(如50-2000bp)方面能力有限。方法利用 20X LRS 和 30X SRS,我们对 40 个汉族亲子三人组进行了全面的全基因组分析。我们利用多种算法调用了单核苷酸变异(SNV)、插入和缺失(indels)以及SV。我们的主要重点是检测和验证从头突变(DNMs)。我们对 LRS 和 SRS 进行了比较分析,以评估它们各自在检测 SV 和从头 SV 方面的能力。随后,我们对从头突变进行了注释,并通过挖掘公共数据库和进行功能实验深入研究了它们在精神分裂症中的潜在机制。最后,我们比较了我们的方法与之前采用全外显子组测序或使用 SRS 进行全基因组测序的研究的诊断率。值得注意的是,在 LRS 采用的四种算法中,有三种以上检测到了其中的四种全新 SV,而在 SRS 采用的四种算法中,没有一种检测到全新 SV。此外,我们的分析还发现了一个 2.8Mb 的区域,该区域只能通过 LRS 访问,而不能通过 SRS 访问。LRS 在分期方面表现出卓越的性能,而从 LRS 和 SRS 得出的调用集则表现出相当水平的孟德尔一致性。在我们的研究中,一个包含 PPP3CA 最后一个内含子、最后一个外显子和 3' UTR 的 11kb 缺失是特别值得关注的。通过实验研究,我们发现携带该 DNM 的精神分裂症患者血细胞中的 PPP3CA 蛋白水平显著降低。在携带类似突变的 HEK293T 细胞系中也观察到了类似的 PPP3CA 蛋白水平的降低,这表明 PPP3CA 的下调是由已发现的新生 SV 引起的。随后,在海马兴奋性神经元中定向敲除 PPP3CA 的小鼠模型中,我们观察到了类似精神分裂症的行为改变和认知功能受损。此外,我们的研究还发现,当采用相同的诊断标准时,诊断率略有提高,这一点在两项比较分析中得到了证实。 结论我们的研究结果表明,在鉴别与精神分裂症相关的风险突变方面,LRS 比 SRS 更具优势。此外,我们的研究还表明 PPP3CA 与精神分裂症的发病机制有关,它在海马区兴奋性神经元中的表达减少,这与精神分裂症样行为和认知功能受损有关。
{"title":"UNRAVELING THE ROLE OF DE NOVO STRUCTURAL VARIANTS IN SCHIZOPHRENIA THROUGH COMPREHENSIVE WHOLE GENOME SEQUENCING WITH LONG-READ AND SHORT-READ TECHNOLOGIES","authors":"Yamin Zhang ,&nbsp;Tong Li ,&nbsp;Shaozhong Yang ,&nbsp;Zhi Xie ,&nbsp;Tao Li","doi":"10.1016/j.euroneuro.2024.08.040","DOIUrl":"10.1016/j.euroneuro.2024.08.040","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Backgrounds&lt;/h3&gt;&lt;div&gt;Genetic liability to schizophrenia involves various types of mutations from across the allele frequency spectrum and distributed across the genome. Findings from studies focusing on different types of mutations in schizophrenia converge partially on the same biological processes, while also providing complementary insights. This underscores the importance of studying the full spectrum of mutation. However, currently widely used genotyping technologies, microarrays and short read sequencing (SRS), have limited ability in detecting medium-sized structural variations (SVs) (e.g. 50-2000bp) compared to long-read sequencing (LRS), which is relatively new and has been rarely applied to genetic studies of schizophrenia so far, suggesting an opportunity to leverage this more comprehensive approach to uncover additional sources of genetic variation that may contribute to the disorder.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Methods&lt;/h3&gt;&lt;div&gt;Utilizing both 20X LRS and 30X SRS, we performed comprehensive whole-genome analysis on 40 Han Chinese parent-offspring trios. We called single nucleotide variants (SNVs), insertions and deletions (indels), and SVs utilizing multiple algorithms. Our primary focus was on the detection and validation of de novo mutations (DNMs). Comparative analysis between LRS and SRS was conducted to assess their respective abilities in detecting SVs and de novo SVs. Subsequently, we annotated the de novo mutations and delved into their potential mechanisms in schizophrenia through mining public databases and conducting functional experiments. Finally, we compared the diagnostic yield of our approach to previous studies employing whole exome sequencing or whole genome sequencing using SRS.&lt;/div&gt;&lt;/div&gt;&lt;div&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;div&gt;Our analysis identified an average of 71.55 DNMs per proband, including 12 de novo SVs. Notably, four of these de novo SVs were detected by more than three out of four algorithms employed for LRS, whereas none were detected by any of the four algorithms utilized for SRS. In addition, our analysis revealed a 2.8Mb region exclusively accessible via by LRS and not SRS. LRS demonstrated exceptional performance in phasing, while the call sets derived from both LRS and SRS exhibited comparable levels of Mendelian consistency. Of particular interest in our study is a de novo 11kb deletion encompassing the last intron, last exon, and 3’ UTR of PPP3CA. Through experimental investigations, we discovered a significant reduction in PPP3CA protein levels in blood cells from the schizophrenia patient harboring this DNM. Similar reductions in PPP3CA protein levels were also observed in HEK293T cell lines carrying a comparable mutation, indicating that the down regulation of PPP3CA results from the identified de novo SV. Subsequently, in mice model with targeted knockdown of PPP3CA in excitatory neurons within the hippocampus, we observed alterations indicative of schizophrenia-like behavior and impaired cognitive funct","PeriodicalId":12049,"journal":{"name":"European Neuropsychopharmacology","volume":"87 ","pages":"Pages 13-14"},"PeriodicalIF":6.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
WHEN YOU ASSUME: RESULTS AND REFLECTIONS FROM STUDIES ON PUBLIC UNDERSTANDING OF GENETICS 当你假设时:关于公众对遗传学理解的研究结果与思考
IF 6.1 2区 医学 Q1 CLINICAL NEUROLOGY Pub Date : 2024-10-01 DOI: 10.1016/j.euroneuro.2024.08.102
José J. Morosoli , Lucia Colodro-Conde , Fiona K. Barlow , Sarah E. Medland
<div><div>From my perspective, science communication goes beyond the mere transmission of information from experts to non-experts. Science communication is dynamic and influenced by personal characteristics and sociopolitical context. As scientists, we not only need to know our audience but also understand ourselves better. The main topics of this presentation are (i) literacy and the use of jargon when talking about genetics; and (ii) specific cognitive biases in how we process information about genetics, including how personal values and experiences can influence how we understand scientific information.</div><div>The talk will be structured in two sections: The first section synthesises our previous work on public understanding of genetics. First, I will discuss a survey study on genetic literacy and public attitudes towards genetic testing in mental health. In this study, we surveyed families that had previously participated in genetic research studies at QIMR Berghofer, Australia (N=3,974), and the general population from the U.K. (N=501) and the U.S. (N=500). Results showed a high interest in psychiatric genetic testing, but the potential for negative impact of such information is also high, with more than a third of the participants showing serious concerns relating to learning about personal genetic predisposition. Concerns were mitigated by higher levels of genetic literacy, leading to less worry about coping with learning about a high genetic predisposition for several mental health problems and less prejudice against people with a high genetic predisposition. Second, I will discuss our recent review on online media articles covering genome-wide association studies (GWAS). We show that we might be missing a major opportunity for increasing general knowledge about genetic findings. Indeed, ∼95% of the news sites and blogs on GWAS used a language too complex to be understood by most adults. Most news articles used the terms ‘RNA’, ‘risk’, ‘gene’, ‘genome’, and ‘DNA’, while the terms ‘marker, ‘polymorphism’, or ‘allele’, rarely appeared. To contextualise these results, I will present new data from our survey showing the results from a modified version of the Rapid Estimate of Adult Literacy in Genetics (REAL-G), which evaluates how familiar the public is with the terms ‘genetics’, ‘chromosome’, ‘susceptibility’, ‘mutation’, ‘genetic variant’, ‘heredity’, and ‘polygenic’. I will briefly touch on the concept of ‘framing’, or how interpretation of information can be influenced by the presence or absence of certain words or images. For example, media on GWAS tends to focus on ‘risk’ (mentioned in 63.7% of articles) versus ‘susceptibility’ (12.2%) or ‘protect’ (11.3%) – the stem of words such as ‘protective’.</div><div>In the second section, I will discuss previous research on genetic determinism as a cognitive bias, as well as the role of motivated cognition. That is, we are not passive or even objective recipients of scientific information, b
在我看来,科学传播不仅仅是专家向非专家传递信息。科学传播是动态的,受到个人特点和社会政治背景的影响。作为科学家,我们不仅要了解受众,还要更好地了解自己。本讲座的主要议题是:(i) 在谈论遗传学时的读写能力和行话的使用;(ii) 我们在处理遗传学信息时的特定认知偏差,包括个人价值观和经历如何影响我们对科学信息的理解:第一部分总结了我们之前在公众理解遗传学方面所做的工作。首先,我将讨论一项关于遗传学知识和公众对精神健康基因检测态度的调查研究。在这项研究中,我们调查了曾参与澳大利亚 QIMR Berghofer 遗传学研究的家庭(样本数=3974),以及英国(样本数=501)和美国(样本数=500)的普通人群。结果显示,人们对精神疾病基因检测的兴趣很高,但此类信息可能带来的负面影响也很大,超过三分之一的参与者对了解个人基因倾向表示严重担忧。较高的遗传知识水平减轻了人们的担忧,从而减少了人们对了解几种精神健康问题的高遗传倾向的担忧,也减少了人们对高遗传倾向者的偏见。其次,我将讨论我们最近对涉及全基因组关联研究(GWAS)的网络媒体文章进行的审查。我们的研究表明,我们可能错失了一个提高人们对基因研究结果的普遍认识的重要机会。事实上,95% 有关全基因组关联研究的新闻网站和博客所使用的语言过于复杂,大多数成年人都无法理解。大多数新闻文章使用了 "RNA"、"风险"、"基因"、"基因组 "和 "DNA "等术语,而 "标记"、"多态性 "或 "等位基因 "等术语则很少出现。为了说明这些结果的来龙去脉,我将介绍我们调查中的新数据,这些数据显示了 "遗传学成人识字率快速评估"(REAL-G)的修改版结果,该结果评估了公众对 "遗传学"、"染色体"、"易感性"、"突变"、"遗传变异"、"遗传 "和 "多基因 "等术语的熟悉程度。我将简要谈谈 "框架 "的概念,即信息的解读如何受到某些词语或图像存在与否的影响。例如,关于全球基因组研究的媒体倾向于关注 "风险"(63.7%的文章提到),而不是 "易感性"(12.2%)或 "保护"(11.3%)--"保护 "等词的词干。也就是说,我们不是被动甚至客观地接受科学信息,而是有策略地选择与我们的目标相一致的事实,或忽略特别具有威胁性的信息。我将从当前公众对气候变化态度研究的角度来阐述这项工作,这可以说是近来科学传播研究中最多产的学科。在演讲的最后,我将提及该领域的一些良好实践范例,包括QIMR Berghofer研究所重新联系土著居民和托雷斯海峡岛民的磋商过程。
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引用次数: 0
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European Neuropsychopharmacology
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