Phenome

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  • 文章类型: Journal Article
    由于其各种复杂的表型,在畜牧业地区进行基因组到表型分析是必要的。猪肚是世界范围内肉类的有利部分,包括东亚。先前的研究表明,影响猪肚性状的三个关键转录因子(ZNF444,NFYA和PPARG)包括总体积,总脂肪和肌肉的体积,和相应切片的部分肌肉。然而,除猪肚成分性状外,其他影响每个切片的转录因子基因仍需鉴定。因此,我们旨在从基因组到表型水平分析五花肉成分,以确定关键转录因子基因及其共同相关网络。通过关联权重矩阵针对每个组件特征的节点编号范围为598至3020。以结果为前提,进行了计算机模拟功能方法。每个共关联网络丰富了脂肪形成和骨骼肌增殖的三个关键转录因子,中胚层发育,新陈代谢,和基因转录。这三个关键转录因子及其相关基因可能有助于理解它们对猪肚构建的影响。
    Genome to phenome analysis is necessary in livestock areas because of its various and complex phenotypes. Pork belly is a favorable part of meat worldwide, including East Asia. A previous study has suggested that the three key transcription factors (ZNF444, NFYA and PPARG) affecting pork belly traits include total volume, the volume of total fat and muscle, and component muscles of the corresponding slice. However, other transcription factor genes affecting each slice other than pork belly component traits still needed to be identified. Thus, we aimed to analyze pork belly components at the genome to phenome level for identifying key transcription factor genes and their co-associated networks. The range of node numbers against each component trait via the association weight matrix was from 598 to 3020. Premised on the result, an in silico functional approach was performed. Each co-association network enriched three key transcription factors in adipogenesis and skeletal muscle proliferation, mesoderm development, metabolism, and gene transcription. The three key transcription factors and their related genes may be useful in comprehending their effect of pork belly construction.
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  • 文章类型: Journal Article
    多变量方法联合分析基因组学和表型组学信息的适用性目前受到缺乏可扩展性的限制。以及从生物学角度解释相关发现的困难。为了解决这些限制,我们提出了贝叶斯基因组到表型稀疏回归(G2PSR),一种新的基于稀疏SNP基因约束的多元回归方法。G2PSR的统计框架基于贝叶斯神经网络,对SNP的约束-基因关联是通过整合将变体链接到各自基因的先验知识来整合的,然后在输出层中重建表型数据。通过变异缺失诱导基因的稀疏性来促进可解释性,允许估计与每个基因相关的不确定性,和相关的SNP,在重建任务中。最终,G2PSR旨在防止多重测试校正,并评估SNP的综合效应,从而增加了检测基因组-表型关联的统计能力。在合成和实际数据上证明了G2PSR的有效性,关于基于分组稀疏性约束的最新方法。实际数据的应用包括对阿尔茨海默病神经成像计划数据的成像遗传学分析,将来自3,500多个基因的SNP与临床和多变量脑体积信息相关联。实验结果表明,该方法能够准确选择SNPs与样本比例较大的数据集中的相关基因,从而克服了当前基因组-表型关联方法的主要局限性。
    The applicability of multivariate approaches for the joint analysis of genomics and phenomics information is currently limited by the lack of scalability, and by the difficulty of interpreting the related findings from a biological perspective. To tackle these limitations, we present Bayesian Genome-to-Phenome Sparse Regression (G2PSR), a novel multivariate regression method based on sparse SNP-gene constraints. The statistical framework of G2PSR is based on a Bayesian neural network, were constraints on SNPs-genes associations are integrated by incorporating a priori knowledge linking variants to their respective genes, to then reconstruct the phenotypic data in the output layer. Interpretability is promoted by inducing sparsity on the genes through variational dropout, allowing to estimate the uncertainty associated with each gene, and related SNPs, in the reconstruction task. Ultimately, G2PSR is conceived to prevent multiple testing correction and to assess the combined effect of SNPs, thus increasing the statistical power in detecting genome-to-phenome associations. The effectiveness of G2PSR was demonstrated on synthetic and real data, with respect to state-of-the-art methods based on group-wise sparsity constraints. The application on real data consisted in an imaging-genetics analysis on the Alzheimer\'s Disease Neuroimaging Initiative data, relating SNPs from more than 3,500 genes to clinical and multi-variate brain volumetric information. The experimental results show that our method can provide accurate selection of relevant genes in dataset with large SNPs-to-samples ratio, thus overcoming the main limitations of current genome-to-phenome association methods.
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  • 文章类型: Journal Article
    The tree shrew ( Tupaia belangeri) has long been proposed as a suitable alternative to non-human primates (NHPs) in biomedical and laboratory research due to its close evolutionary relationship with primates. In recent years, significant advances have facilitated tree shrew studies, including the determination of the tree shrew genome, genetic manipulation using spermatogonial stem cells, viral vector-mediated gene delivery, and mapping of the tree shrew brain atlas. However, the limited availability of tree shrews globally remains a substantial challenge in the field. Additionally, determining the key questions best answered using tree shrews constitutes another difficulty. Tree shrew models have historically been used to study hepatitis B virus (HBV) and hepatitis C virus (HCV) infection, myopia, and psychosocial stress-induced depression, with more recent studies focusing on developing animal models for infectious and neurodegenerative diseases. Despite these efforts, the impact of tree shrew models has not yet matched that of rodent or NHP models in biomedical research. This review summarizes the prominent advancements in tree shrew research and reflects on the key biological questions addressed using this model. We emphasize that intensive dedication and robust international collaboration are essential for achieving breakthroughs in tree shrew studies. The use of tree shrews as a unique resource is expected to gain considerable attention with the application of advanced techniques and the development of viable animal models, meeting the increasing demands of life science and biomedical research.
    树鼩( Tupaia belangeri)是灵长类动物的近亲,长期以来一直被提议作为生物医学和实验研究中灵长类动物的合适替代品。近年来,树鼩的研究取得了重大进展,如树鼩基因组测定、使用精原干细胞成功实现树鼩基因操作、病毒载体介导的基因传递以及树鼩脑图谱绘制等。然而,全球范围内的实验树鼩供应有限,仍然是该领域面临的重大挑战。此外,确定最适合使用树鼩来研究的关键问题,也是一个困难。树鼩模型在历史上被用于研究乙型肝炎病毒(HBV)和丙型肝炎病毒(HCV)感染、近视和心理社会压力引发的抑郁症,最近的研究重点是开发感染性疾病和神经退行性疾病的树鼩动物模型。尽管有这些努力与成效,树鼩模型在生物医学研究中的影响力,还远未达到啮齿动物或灵长类动物模型的水平。该综述总结了树鼩研究中的重要进展,并对使用树鼩模型解决的关键生物学问题进行了反思。该文强调,为了在树鼩研究中取得突破,需要更广泛和深度的国际合作与投入。随着先进技术的应用和动物模型的开发,树鼩作为一种独特资源,有望受到越来越多的关注,以满足生命科学和生物医学研究中日益增长的需求。.
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  • 文章类型: Letter
    暂无摘要。
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  • 文章类型: Journal Article
    目的:癫痫的病因及诱发因素尚不清楚。全基因组关联研究的结果可用于使用孟德尔随机化(MR)的全表型关联研究,以确定癫痫的潜在危险因素。
    方法:本研究利用双样本MR分析来调查316种表型包括生活方式,环境因素,血液生物标志物,还有更多,与癫痫的发生有因果关系。主要分析采用逆方差加权(IVW)模型,而互补的MR分析方法(MREgger,Wald比率)也被采用。还进行了敏感性分析以评估异质性和多效性。
    结果:在Bonferroni校正(p<1.58×10-4)或错误发现率校正后,没有证据表明所检查的表型与癫痫之间存在统计学上显著的因果关系。MR分析结果表明,过去2周内疲倦或嗜睡的频率(p=0.042),血尿苷(p=0.003),血丙酰肉碱(p=0.041),和游离胆固醇(p=0.044)是癫痫的提示因果风险。生活方式的选择,例如睡眠时间和饮酒,以及包括类固醇激素水平在内的生物标志物,海马体积,杏仁核体积未被确定为发生癫痫的原因因素(p>0.05)。
    结论:我们的研究为癫痫的潜在原因提供了更多的见解,这将作为预防和控制癫痫的证据。在流行病学研究中观察到的关联可能部分归因于共同的生物因素或生活方式混杂因素。
    OBJECTIVE: The causes and triggering factors of epilepsy are still unknown. The results of genome-wide association studies can be utilized for a phenome-wide association study using Mendelian randomization (MR) to identify potential risk factors for epilepsy.
    METHODS: This study utilizes two-sample MR analysis to investigate whether 316 phenotypes, including lifestyle, environmental factors, blood biomarker, and more, are causally associated with the occurrence of epilepsy. The primary analysis employed the inverse variance weighted (IVW) model, while complementary MR analysis methods (MR Egger, Wald ratio) were also employed. Sensitivity analyses were also conducted to evaluate heterogeneity and pleiotropy.
    RESULTS: There was no evidence of a statistically significant causal association between the examined phenotypes and epilepsy following Bonferroni correction (p < 1.58 × 10-4) or false discovery rate correction. The results of the MR analysis indicate that the frequency of tiredness or lethargy in the last 2 weeks (p = 0.042), blood uridine (p = 0.003), blood propionylcarnitine (p = 0.041), and free cholesterol (p = 0.044) are suggestive causal risks for epilepsy. Lifestyle choices, such as sleep duration and alcohol consumption, as well as biomarkers including steroid hormone levels, hippocampal volume, and amygdala volume were not identified as causal factors for developing epilepsy (p > 0.05).
    CONCLUSIONS: Our study provides additional insights into the underlying causes of epilepsy, which will serve as evidence for the prevention and control of epilepsy. The associations observed in epidemiological studies may be partially attributed to shared biological factors or lifestyle confounders.
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  • 文章类型: Journal Article
    忽视毛竹的表型变异阻碍了其更广泛的利用,尽管它在全球具有很高的经济价值。因此,本研究调查了16个毛竹种群的形态变异。分析显示,茎秆高度从9.67米到17.5米不等,第一分支下的平均高度为4.91m至7.67m。第一分支下的节间总数从17到36不等,节间长度为2.9cm至46.4cm,直径范围从5.10厘米到17.2厘米,壁厚从3.20毫米到33.3毫米,表明种群之间的不同属性。此外,节间直径之间观察到很强的正相关,厚度,长度,和音量。第一分支下的高度变异系数与几个参数呈强正相关,表明它们对总杆高的贡献的可变性。回归分析揭示了培养参数之间的协变模式,突出了它们对茎秆高度和结构特征的影响。直径和厚度都显著影响节间体积和茎高,并且培养参数倾向于一起增加或减少,影响茎秆高度。此外,这项研究还确定了月降水量与节间直径和厚度之间的显着负相关,尤其是在12月和1月,影响原发性增厚生长,因此,节间大小。
    The neglect of Moso bamboo\'s phenotype variations hinders its broader utilization, despite its high economic value globally. Thus, this study investigated the morphological variations of 16 Moso bamboo populations. The analysis revealed the culm heights ranging from 9.67 m to 17.5 m, with average heights under the first branch ranging from 4.91 m to 7.67 m. The total internode numbers under the first branch varied from 17 to 36, with internode lengths spanning 2.9 cm to 46.4 cm, diameters ranging from 5.10 cm to 17.2 cm, and wall thicknesses from 3.20 mm to 33.3 mm, indicating distinct attributes among the populations. Furthermore, strong positive correlations were observed between the internode diameter, thickness, length, and volume. The coefficient of variation of height under the first branch showed strong positive correlations with several parameters, indicating variability in their contribution to the total culm height. A regression analysis revealed patterns of covariation among the culm parameters, highlighting their influence on the culm height and structural characteristics. Both the diameter and thickness significantly contribute to the internode volume and culm height, and the culm parameters tend to either increase or decrease together, influencing the culm height. Moreover, this study also identified a significant negative correlation between monthly precipitation and the internode diameter and thickness, especially during December and January, impacting the primary thickening growth and, consequently, the internode size.
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  • 文章类型: Journal Article
    对创伤后应激障碍(PTSD)的脆弱性和韧性的区别尚不清楚。利用创伤经历报告,遗传数据,和电子健康记录(EHR),我们调查并预测了英国生物库(UKB)和美国研究计划(AoU)中PTSD脆弱性和弹性的临床合并症(共表型),分别。在60,354名创伤暴露的UKB参与者中,我们根据PTSD症状定义了PTSD脆弱性和弹性,创伤负担,和多基因风险评分。进行了基于EHR的表型全关联研究(PheWAS),以剖析PTSD脆弱性和弹性的共表型。重要的诊断终点作为权重,产生表型风险评分(PheRS),以在多达95,761名AoU参与者中进行PTSD脆弱性和弹性PheRS的PheWAS。基于EHR的PheWAS显示了与PTSD脆弱性呈正相关的三种重要表型(最高关联“睡眠障碍”)和与PTSD韧性呈负相关的五种结果(最高关联“肠易激综合征”)。在AoU队列中,PheRS分析显示,脆弱性和复原力之间存在部分反比关系,具有明显的共病关联。虽然PheRS脆弱性关联与多种表型有关,PheRS弹性与眼部状况呈负相关。我们的研究揭示了创伤后应激障碍脆弱性和复原力的表型差异,强调这些概念不仅仅是PTSD的不存在和存在。
    What distinguishes vulnerability and resilience to posttraumatic stress disorder (PTSD) remains unclear. Levering traumatic experiences reporting, genetic data, and electronic health records (EHR), we investigated and predicted the clinical comorbidities (co-phenome) of PTSD vulnerability and resilience in the UK Biobank (UKB) and All of Us Research Program (AoU), respectively. In 60,354 trauma-exposed UKB participants, we defined PTSD vulnerability and resilience considering PTSD symptoms, trauma burden, and polygenic risk scores. EHR-based phenome-wide association studies (PheWAS) were conducted to dissect the co-phenomes of PTSD vulnerability and resilience. Significant diagnostic endpoints were applied as weights, yielding a phenotypic risk score (PheRS) to conduct PheWAS of PTSD vulnerability and resilience PheRS in up to 95,761 AoU participants. EHR-based PheWAS revealed three significant phenotypes positively associated with PTSD vulnerability (top association \"Sleep disorders\") and five outcomes inversely associated with PTSD resilience (top association \"Irritable Bowel Syndrome\"). In the AoU cohort, PheRS analysis showed a partial inverse relationship between vulnerability and resilience with distinct comorbid associations. While PheRSvulnerability associations were linked to multiple phenotypes, PheRSresilience showed inverse relationships with eye conditions. Our study unveils phenotypic differences in PTSD vulnerability and resilience, highlighting that these concepts are not simply the absence and presence of PTSD.
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  • 文章类型: Journal Article
    目的:针对使用电子健康记录(EHR)关联的生物库数据进行的常用分析,提出使用权重降低选择偏倚的建议。
    方法:我们将诊断(ICD代码)数据映射到具有不同招募策略的3个与EHR相关的生物库的标准化密码:我们所有人(AOU;n=244.071),密歇根基因组学计划(MGI;n=81.243),和英国生物银行(UKB;n=401.167)。使用2019年全国健康访谈调查数据,我们构建了AOU和MGI的选择权重,以更多地代表美国成年人口。我们使用先前为UKB开发的权重来表示符合UKB资格的人群。我们进行了4次常见分析,比较了未加权和加权结果。
    结果:对于AOU和MGI,加权后估计的phecode患病率下降(加权-未加权中位数phecode患病率比率[MPR]:0.82和0.61),而UKB估计值增加(MPR:1.06)。加权影响最小的潜在表型维度估计。比较结直肠癌的加权和未加权的全表型关联研究,最强的联系保持不变,在重大点击中具有相当大的重叠。加权影响性别和结直肠癌的估计对数比值比,使其与基于国家注册登记的估计更接近。
    结论:加权对维度估计和大规模假设检验的影响有限,但影响患病率和关联估计。当对估计效应大小感兴趣时,来自非目标关联分析的特定信号应进行加权分析.
    结论:与EHR相关的生物样本银行应报告招募和选择机制,并提供确定目标人群的选择权重。研究人员应该考虑他们的预期期望,指定源和目标人群,并相应地对与EHR相关的生物样本库进行加权分析。
    OBJECTIVE: To develop recommendations regarding the use of weights to reduce selection bias for commonly performed analyses using electronic health record (EHR)-linked biobank data.
    METHODS: We mapped diagnosis (ICD code) data to standardized phecodes from 3 EHR-linked biobanks with varying recruitment strategies: All of Us (AOU; n = 244 071), Michigan Genomics Initiative (MGI; n = 81 243), and UK Biobank (UKB; n = 401 167). Using 2019 National Health Interview Survey data, we constructed selection weights for AOU and MGI to represent the US adult population more. We used weights previously developed for UKB to represent the UKB-eligible population. We conducted 4 common analyses comparing unweighted and weighted results.
    RESULTS: For AOU and MGI, estimated phecode prevalences decreased after weighting (weighted-unweighted median phecode prevalence ratio [MPR]: 0.82 and 0.61), while UKB estimates increased (MPR: 1.06). Weighting minimally impacted latent phenome dimensionality estimation. Comparing weighted versus unweighted phenome-wide association study for colorectal cancer, the strongest associations remained unaltered, with considerable overlap in significant hits. Weighting affected the estimated log-odds ratio for sex and colorectal cancer to align more closely with national registry-based estimates.
    CONCLUSIONS: Weighting had a limited impact on dimensionality estimation and large-scale hypothesis testing but impacted prevalence and association estimation. When interested in estimating effect size, specific signals from untargeted association analyses should be followed up by weighted analysis.
    CONCLUSIONS: EHR-linked biobanks should report recruitment and selection mechanisms and provide selection weights with defined target populations. Researchers should consider their intended estimands, specify source and target populations, and weight EHR-linked biobank analyses accordingly.
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  • 文章类型: Journal Article
    背景:已经对亚洲人群进行了全表型关联研究(PheWASs),包括韩国人,但许多是基于芯片或外显子组基因分型数据。此类研究在全基因组关联分析方面存在局限性,这使得具有基因组到表型组关联信息与尽可能大的全基因组和匹配的表型组数据,以进行进一步的人口基因组研究和开发基于人口基因组学的医疗保健服务至关重要。
    结果:这里,我们提供了4,157个全基因组序列(Korea4K)和107个健康检查参数,作为韩国基因组计划的最大基因组资源。它涵盖了韩国人等位基因频率>0.001的大多数变体,这表明它足以覆盖大多数常见和罕见的遗传变异与韩国人常见的表型。Korea4K提供45,537,252个变体,其中一半不存在于Korea1K(1,094个样本)。我们还确定了Korea1K数据集未发现的1,356个新的基因型-表型关联。现象组学分析进一步揭示了24个显著的遗传相关性,14个多效性协会,和基于孟德尔随机化的37个性状的127个因果关系。此外,Korea4K估算参考小组,迄今为止最大的韩国变体参考,在所有等位基因频率类别中,Korea1K均表现出优异的归因性能。
    结论:总的来说,Korea4K不仅提供了最大的韩国基因组数据,还提供了相应的健康检查参数和新的基因组-表型关联。大规模的病理全基因组组学数据将成为基因组-表型水平关联研究的有力集合,以发现因果标记,用于未来研究中的健康状况的预测和诊断。
    Phenome-wide association studies (PheWASs) have been conducted on Asian populations, including Koreans, but many were based on chip or exome genotyping data. Such studies have limitations regarding whole genome-wide association analysis, making it crucial to have genome-to-phenome association information with the largest possible whole genome and matched phenome data to conduct further population-genome studies and develop health care services based on population genomics.
    Here, we present 4,157 whole genome sequences (Korea4K) coupled with 107 health check-up parameters as the largest genomic resource of the Korean Genome Project. It encompasses most of the variants with allele frequency >0.001 in Koreans, indicating that it sufficiently covered most of the common and rare genetic variants with commonly measured phenotypes for Koreans. Korea4K provides 45,537,252 variants, and half of them were not present in Korea1K (1,094 samples). We also identified 1,356 new genotype-phenotype associations that were not found by the Korea1K dataset. Phenomics analyses further revealed 24 significant genetic correlations, 14 pleiotropic associations, and 127 causal relationships based on Mendelian randomization among 37 traits. In addition, the Korea4K imputation reference panel, the largest Korean variants reference to date, showed a superior imputation performance to Korea1K across all allele frequency categories.
    Collectively, Korea4K provides not only the largest Korean genome data but also corresponding health check-up parameters and novel genome-phenome associations. The large-scale pathological whole genome-wide omics data will become a powerful set for genome-phenome level association studies to discover causal markers for the prediction and diagnosis of health conditions in future studies.
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  • 文章类型: Preprint
    通过加权电子健康记录(EHR)链接的生物库数据来探索选择偏差调整的作用,以进行常用分析。
    我们将诊断(ICD代码)数据从三个与EHR相关的生物库(具有不同的招募策略)映射到标准化的密码:我们所有人(AOU;n=244,071),密歇根基因组学倡议(MGI;n=81,243),和英国生物银行(UKB;n=401,167)。使用2019年全国健康访谈调查数据,我们构建了AOU和MGI的选择权重,以便更能代表美国成年人口。我们使用先前为UKB开发的权重来表示符合UKB资格的人群。我们进行了四个常见的描述性和分析任务,比较了未加权和加权结果。
    对于AOU和MGI,加权后估计的phecode患病率下降(加权-未加权中位数phecode患病率比率[MPR]:0.82和0.61),而UKB的估计增加(MPR:1.06)。加权影响最小的潜在表型维度估计。比较结直肠癌的加权和未加权PheWAS,最强的关联保持不变,并且在显著命中中存在大量重叠.加权影响性别和结直肠癌的估计对数比值比,使其与基于国家注册登记的估计更接近。
    加权对维度估计和大规模假设检验的影响有限,但对患病率和关联估计的影响更大。当特定信号对效应大小估计感兴趣时,非目标关联分析的结果应进行加权分析。
    与EHR相关的生物银行应报告招募和选择机制,并提供具有确定目标人群的选择权重。研究人员应该考虑他们的预期期望,指定源和目标人群,并相应地对与EHR相关的生物样本库进行加权分析。
    UNASSIGNED: To explore the role of selection bias adjustment by weighting electronic health record (EHR)-linked biobank data for commonly performed analyses.
    UNASSIGNED: We mapped diagnosis (ICD code) data to standardized phecodes from three EHR-linked biobanks with varying recruitment strategies: All of Us (AOU; n=244,071), Michigan Genomics Initiative (MGI; n=81,243), and UK Biobank (UKB; n=401,167). Using 2019 National Health Interview Survey data, we constructed selection weights for AOU and MGI to be more representative of the US adult population. We used weights previously developed for UKB to represent the UKB-eligible population. We conducted four common descriptive and analytic tasks comparing unweighted and weighted results.
    UNASSIGNED: For AOU and MGI, estimated phecode prevalences decreased after weighting (weighted-unweighted median phecode prevalence ratio [MPR]: 0.82 and 0.61), while UKB\'s estimates increased (MPR: 1.06). Weighting minimally impacted latent phenome dimensionality estimation. Comparing weighted versus unweighted PheWAS for colorectal cancer, the strongest associations remained unaltered and there was large overlap in significant hits. Weighting affected the estimated log-odds ratio for sex and colorectal cancer to align more closely with national registry-based estimates.
    UNASSIGNED: Weighting had limited impact on dimensionality estimation and large-scale hypothesis testing but impacted prevalence and association estimation more. Results from untargeted association analyses should be followed by weighted analysis when effect size estimation is of interest for specific signals.
    UNASSIGNED: EHR-linked biobanks should report recruitment and selection mechanisms and provide selection weights with defined target populations. Researchers should consider their intended estimands, specify source and target populations, and weight EHR-linked biobank analyses accordingly.
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