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Mechanistic insights into cardiovascular toxicity induced by polycyclic aromatic hydrocarbons using Benzo[a]pyrene (BaP) as an example 以苯并[a]芘(BaP)为例,对多环芳烃引起的心血管毒性的机理研究。
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-02 DOI: 10.1016/j.compbiolchem.2026.108877
Haoyue Jia , Hao Zhang , Chengyan Guan , Qiang Wan
Environmental contamination has emerged as a critical global public health challenge. Among persistent organic pollutants, polycyclic aromatic hydrocarbons (PAHs) exhibit concerning bioaccumulation potential in aquatic and terrestrial ecosystems, with demonstrated cardiotoxic effects in humans. Nevertheless, the precise molecular pathogenesis of PAH-mediated cardiovascular damage requires further elucidation. This investigation adopts a multi-modal computational strategy integrating network toxicology with molecular docking to systematically characterize PAH-induced cardiovascular toxicity mechanisms. Comprehensive toxicity profiling was performed through ADMETlab 3.0 and ProTox3.0 platforms, while putative molecular targets were identified via SwissTargetPrediction, ChEMBL, SEA, and CTD repositories. Disease-relevant targets were curated from GeneCards and OMIM databases. Integrated analysis combining Venn diagram, protein-protein interaction (PPI) network, and Cytoscape 3.9.1 visualization identified critical common targets. Functional annotation using Metascape and DAVID elucidated the crucial associated biological processes, cellular compartments, and molecular functions. Pathway enrichment analysis identified dominant signaling pathways, primarily the PI3K-AKT and MAPK cascades, along with those involved in hemodynamic stress/atherogenesis and oncogenic networks. Molecular docking coupled with molecular dynamics simulations further confirmed robust and energetically favorable interactions between PAH compounds and core toxicity targets. Collectively, using BaP as a paradigm, this in-silico study demonstrates an integrative computational workflow to investigate PAH-induced cardiovascular toxicity, proposing candidate molecular targets and pathways, which exemplifies the utility of multi-level bioinformatics in generating hypotheses for toxicological evaluation.
环境污染已成为一项重大的全球公共卫生挑战。在持久性有机污染物中,多环芳烃(PAHs)在水生和陆地生态系统中具有生物蓄积潜力,对人类具有心脏毒性作用。然而,多环芳烃介导的心血管损伤的确切分子发病机制需要进一步阐明。本研究采用网络毒理学与分子对接相结合的多模态计算策略,系统表征多环芳烃诱导的心血管毒性机制。通过ADMETlab 3.0和ProTox3.0平台进行全面的毒性分析,同时通过SwissTargetPrediction、ChEMBL、SEA和CTD库确定可能的分子靶点。从GeneCards和OMIM数据库中筛选疾病相关靶标。结合维恩图、蛋白蛋白相互作用(PPI)网络和Cytoscape 3.9.1可视化的综合分析确定了关键的共同靶点。使用metscape和DAVID的功能注释阐明了关键的相关生物学过程、细胞区室和分子功能。途径富集分析确定了主要的信号通路,主要是PI3K-AKT和MAPK级联,以及参与血流动力学应激/动脉粥样硬化和致癌网络的信号通路。分子对接结合分子动力学模拟进一步证实了多环芳烃化合物与核心毒性靶点之间强大且能量有利的相互作用。总的来说,以BaP为范例,本计算机研究展示了一个综合计算工作流来研究多环芳烃诱导的心血管毒性,提出了候选分子靶点和途径,这体现了多层次生物信息学在产生毒理学评估假设方面的实用性。
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引用次数: 0
Computational identification of potential MMP-2 inhibitors in cancer using machine learning, molecular docking, and dynamics simulations 利用机器学习、分子对接和动力学模拟计算鉴定癌症中潜在的MMP-2抑制剂
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-24 DOI: 10.1016/j.compbiolchem.2026.108919
Sohail Akhtar , Ahmed Ibrahim , Ahmed M.A. Abdalla , Mohammad Aatif , Rohit Kumar Singh Gautam , Mohammad Aslam , Danishuddin
Matrix metalloproteinase-2 (MMP-2) is a zinc-dependent endopeptidase which plays a key role in the extracellular matrix-remodeling and cancer metastasis. Nevertheless, despite the vast number of attempts, MMP-2 selective and low-toxicity development is a problematic area because of the insufficient selectivity and the off-target effect of the previous candidates. This work demonstrated that an integrated machine learning-driven virtual screening pipeline can be used to discover better selectivity, and binding stability novel MMP-2 inhibitors. Various models of classification were trained with the help of a set of different molecular fingerprints, and random Forest and radial-basis-function Support Vector Model of classification showed the best predictive results (AUC > 0.97, MCC > 0.86). These models have been used to filter the Maybridge compound library resulting in the selection of the top-ranked ones. Molecular docking and subsequent ADMET profiling of the shortlisted seven potential compounds yielded a list of 1. Molecular dynamics simulations (100 ns) showed that GK03418 and RH00707 had stable binding conformations similar to that of the reference inhibitor. Free energy landscape mapping and principal component analysis was another method that proved thermodynamic stability of GK03418. The energetics of binding free-energy calculations with MM/PBSA and MM/GBSA showed positive results and the most promising inhibitor was GK03418. In general, this paper provides a computationally sound and scalable structure of the discovery of selective MMP-2 inhibitors that have future anticancer applicability.
基质金属蛋白酶-2 (Matrix metalloproteinase-2, MMP-2)是一种锌依赖性内肽酶,在细胞外基质重塑和肿瘤转移中起关键作用。然而,尽管进行了大量的尝试,但由于先前候选物的选择性不足和脱靶效应,MMP-2的选择性和低毒性开发仍然是一个有问题的领域。这项工作表明,一个集成的机器学习驱动的虚拟筛选管道可以用来发现更好的选择性和结合稳定性的新型MMP-2抑制剂。利用一组不同的分子指纹对不同的分类模型进行训练,随机森林和径向基函数支持向量模型的分类预测效果最好(AUC > 0.97, MCC > 0.86)。这些模型被用来过滤Maybridge化合物库,从而选择排名最高的。通过分子对接和随后的ADMET分析,获得了7个候选化合物。分子动力学模拟(100 ns)表明,GK03418和RH00707具有与参考抑制剂相似的稳定结合构象。自由能景观映射和主成分分析是另一种证明GK03418热力学稳定性的方法。MM/PBSA和MM/GBSA结合自由能计算的能量学结果均为阳性,其中最有希望的抑制剂是GK03418。总的来说,本文为发现具有未来抗癌适用性的选择性MMP-2抑制剂提供了一个计算合理且可扩展的结构。
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引用次数: 0
Computational exploration of squalene analog 4,4′diapophytofluene as a potential anti-aging phytotherapeutic 角鲨烯类似物4,4′二叶藻氟烯作为潜在抗衰老植物药物的计算探索。
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-02-08 DOI: 10.1016/j.compbiolchem.2026.108945
Madhurima Dutta , Anjan Hazra , Suparna Mandal Biswas
Cellular senescence is a complex biological process characterized by several unique features including cell-cycle arrest, macromolecular damage, secretory phenotypes (SASPs), and deregulated metabolism. These factors are essential for understanding their impact on aging and diseases. Extensive studies on various biochemical pathways associated with mammalian aging have identified SIRT-1, Bcl-xL, Hsp-90, MDM-2, AMPK and mTOR as some key regulatory proteins. So, preserving the functions of these proteins could potentially decelerate the aging process. A previous study had demonstrated that 4,4′-diapophytofluene (4,4′-DPE), a squalene analog extracted from the pentane fraction of Cocos nucifera leaves was more effective than squalene in suppressing senescence induction in WI38 and HaCaT cells. In the present study, high-throughput virtual screening was performed to evaluate the interaction between 4,4′-DPE and six aforementioned aging regulators, further validating its role as a natural senotherapeutic along with squalene and some well-known anti-aging botanicals (quercetin, curcumin, resveratrol, metformin, and fisetin). In molecular docking studies, 4,4′-DPE revealed stronger binding affinity (ΔG) with SIRT-1, Bcl-xL, Hsp-90, MDM-2, and mTOR, except for AMPK protein, compared to quercetin, curcumin, resveratrol, and fisetin. The MM/PBSA and FEL plots of molecular dynamics simulation of 100 ns production had also highlighted 4,4′-DPE maintained thermodynamically stable and favourable interactions with binding pockets of five proteins, supported by persistent van der Waals and hydrophobic contacts with minimal structural deviations. Furthermore, the ADMET studies confirmed 4,4′-DPE as a clinically safe bioactive compound, facilitating it to become a novel senotherapeutic/anti-aging agent for pharmaceuticals and dermatological products.
细胞衰老是一个复杂的生物学过程,具有细胞周期阻滞、大分子损伤、分泌表型(SASPs)和代谢失调等特点。这些因素对于了解它们对衰老和疾病的影响至关重要。对哺乳动物衰老相关的多种生化途径进行了广泛的研究,发现SIRT-1、Bcl-xL、Hsp-90、MDM-2、AMPK和mTOR是一些关键的调控蛋白。因此,保留这些蛋白质的功能可能会潜在地减缓衰老过程。先前的研究表明,从椰子叶的戊烷部分提取的角鲨烯类似物4,4'-二叶藻氟烯(4,4'-DPE)在抑制WI38和HaCaT细胞衰老方面比角鲨烯更有效。在本研究中,通过高通量虚拟筛选来评估4,4'-DPE与上述六种衰老调节因子之间的相互作用,进一步验证了其与角鲨烯和一些著名的抗衰老植物药物(槲皮素、姜黄素、白藜芦醇、二甲双胍和非塞酮)一起作为天然衰老治疗药物的作用。在分子对接研究中,与槲皮素、姜黄素、白藜芦醇和非塞酮相比,4,4'-DPE与SIRT-1、Bcl-xL、Hsp-90、MDM-2和mTOR (AMPK蛋白除外)的结合亲和力更强(ΔG)。100 ns生产过程的分子动力学模拟的MM/PBSA和FEL图也显示,4,4'-DPE在持续的范德华和疏水接触的支持下,与五种蛋白质的结合袋保持了热力学稳定和良好的相互作用。此外,ADMET研究证实4,4'-DPE是一种临床安全的生物活性化合物,有助于其成为药物和皮肤产品的新型老年治疗/抗衰老剂。
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引用次数: 0
A systems biology approach to programmed cell death in prostate cancer: Biomarker discovery and therapeutic potential of DL-PDMP 前列腺癌程序性细胞死亡的系统生物学方法:DL-PDMP的生物标志物发现和治疗潜力
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-16 DOI: 10.1016/j.compbiolchem.2026.108912
Elif Kubat Oktem , Muhammed Yasar Bener , Ummuhan Demir
Prostatic adenocarcinoma (PRAD) is among the most common malignancies in men and is characterized by considerable genetic and epigenetic heterogeneity. Despite advances in diagnosis and treatment, options for advanced and refractory prostate cancer remain limited, which adversely affects patient prognosis. This project aims to identify diagnostic and prognostic biomarkers associated with programmed cell death (PCD) mechanisms in prostate cancer and to reposition existing drugs that target these biomarkers. Using RNA-seq and clinical data from The Cancer Genome Atlas (TCGA), differential gene expression, ROC curve, and survival analyses identified six candidate biomarkers with strong diagnostic and prognostic significance. Three small molecules – DL-PDMP, clobetasol propionate, and metoclopramide hydrochloride – capable of reversing gene expression profiles were selected for in vitro assays in a drug repositioning analysis conducted using the L1000CDS2 platform. Among these, DL-PDMP was prioritized because of its low IC50 value and low toxicity to normal prostate epithelial cells. Furthermore, DL-PDMP has been shown to induce apoptosis and suppress colony formation. These findings suggest that targeting PCD-associated biomarkers is a promising strategy for prostate cancer treatment, making DL-PDMP a strong candidate for further preclinical studies.
前列腺腺癌(PRAD)是男性最常见的恶性肿瘤之一,其特点是具有相当大的遗传和表观遗传异质性。尽管在诊断和治疗方面取得了进展,但晚期和难治性前列腺癌的选择仍然有限,这对患者的预后产生了不利影响。该项目旨在确定前列腺癌中与程序性细胞死亡(PCD)机制相关的诊断和预后生物标志物,并重新定位针对这些生物标志物的现有药物。利用RNA-seq和来自癌症基因组图谱(TCGA)的临床数据,差异基因表达、ROC曲线和生存分析确定了六个具有强诊断和预后意义的候选生物标志物。在L1000CDS2平台上,选择了三种能够逆转基因表达谱的小分子DL-PDMP、丙酸氯倍他索尔和盐酸甲氧氯普胺进行体外药物重新定位分析。其中,DL-PDMP因其IC50值低、对正常前列腺上皮细胞毒性低而被优先考虑。此外,DL-PDMP已被证明可诱导细胞凋亡并抑制集落形成。这些发现表明,靶向ppd相关生物标志物是一种很有前景的前列腺癌治疗策略,使DL-PDMP成为进一步临床前研究的有力候选者。
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引用次数: 0
Assessing the performance of physics-informed neural networks for tumor growth prediction under noisy and sparse data conditions 在噪声和稀疏数据条件下评估物理信息神经网络用于肿瘤生长预测的性能。
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-20 DOI: 10.1016/j.compbiolchem.2026.108915
Nicolás Murúa , Aníbal Coronel , Gastón Márquez
Cancer presents multiple challenges for its study, which is why mathematical models have become essential tools to understand its dynamics and reduce reliance on costly biological experiments. This investigation explores the use of Physics-Informed Neural Networks (PINNs) to approximate and predict cancer progression based on a simplified ordinary differential system mathematical model, which describes the interactions among tumor, normal, and immune cells. Synthetic data are generated using the implicit Euler method, incorporating noise to simulate real clinical measurements. The study evaluates how the amount of data, temporal spacing, and noise level affect the network’s performance. Results show that having at least 40 days of data enables accurate predictions in most evaluated scenarios. A comparative analysis with a Multi-Layer Perceptron (MLP) and a Least Squares (LS) approach using RK45 demonstrated that the PINN is significantly more robust for learning and predicting future dynamics, especially under limited or noisy data conditions. The inclusion of the physical loss allowed the model to extrapolate beyond the observed domain, although it did not fully compensate for data scarcity. Accurately modeling the immune cell population proved particularly challenging. These findings help identify the limitations and obstacles that such techniques must overcome to be effectively applied in real-world clinical settings, ultimately supporting data-driven medical decision-making through robust, model-based predictions.
癌症的研究面临着多重挑战,这就是为什么数学模型已成为了解其动态和减少对昂贵的生物实验依赖的重要工具。本研究探索了基于简化的常微分系统数学模型的物理信息神经网络(pinn)的使用来近似和预测癌症进展,该模型描述了肿瘤、正常细胞和免疫细胞之间的相互作用。使用隐式欧拉方法生成合成数据,并结合噪声来模拟真实的临床测量。该研究评估了数据量、时间间隔和噪声水平如何影响网络的性能。结果表明,拥有至少40天的数据可以在大多数评估情景中进行准确预测。与多层感知器(MLP)和使用RK45的最小二乘(LS)方法的比较分析表明,PINN在学习和预测未来动态方面具有更强的鲁棒性,特别是在有限或有噪声的数据条件下。包括物理损失允许模型外推超出观测域,尽管它没有完全补偿数据稀缺性。事实证明,准确地模拟免疫细胞群尤其具有挑战性。这些发现有助于确定这些技术必须克服的限制和障碍,以便有效地应用于现实世界的临床环境,最终通过稳健的、基于模型的预测来支持数据驱动的医疗决策。
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引用次数: 0
Boolean network-based identification of optimal drug combinations for prostate cancer 基于布尔网络的前列腺癌最佳药物组合识别。
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-12 DOI: 10.1016/j.compbiolchem.2026.108898
Pranabesh Bhattacharjee , Addanki Pratap Kumar , Aniruddha Datta
Prostate cancer is one of the most common cancers among men in the United States and is a leading cause of cancer-related deaths and the second most common cancer in men worldwide. In this study, we used a Boolean network model to analyze prostate cancer signaling pathways and to identify optimal drug combinations for precision therapy. By integrating publicly available biological signaling pathway data with recent research findings, we developed a comprehensive model that represents protein-protein interactions, gene mutations, and pathway dysregulation. Faults induced by mutations were modeled using the “stuck at 0” or “stuck at 1” fault paradigms, capturing the impact of genetic alterations on pathway behavior. The model was simulated across various drug combinations to determine which therapies could most effectively alleviate the aberrant signaling caused by specific mutations. To quantify therapeutic efficacy, we calculated a Size Difference (SD) score, a metric analogous to Hamming distance, measuring the deviation from normal, for each drug combination and fault scenario. The results revealed that drug combinations involving Berberine, Docetaxel, Olaparib, and Enzalutamide showed promising prediction efficacy (more than 90 %), indicating higher therapeutic potential. A distinguishing feature of this work is that, in addition to the standard prostate cancer drugs, we have included Berberine, a non-toxic natural compound with beneficial effects. These computational findings provide a framework for future experimental and clinical validation, which is necessary to confirm the therapeutic relevance of the predicted drug combinations.
前列腺癌是美国男性中最常见的癌症之一,是癌症相关死亡的主要原因,也是全球男性中第二大常见癌症。在这项研究中,我们使用布尔网络模型来分析前列腺癌信号通路,并确定精确治疗的最佳药物组合。通过整合公开可用的生物信号通路数据和最近的研究成果,我们开发了一个综合模型,代表蛋白质-蛋白质相互作用,基因突变和通路失调。由突变引起的错误使用“卡在0”或“卡在1”错误范式进行建模,捕捉遗传改变对途径行为的影响。该模型模拟了各种药物组合,以确定哪种疗法可以最有效地减轻由特定突变引起的异常信号。为了量化治疗效果,我们计算了大小差异(SD)评分,这是一种类似于汉明距离的度量,用于测量每种药物组合和故障情况与正常情况的偏差。结果显示,小檗碱、多西他赛、奥拉帕尼和恩扎鲁胺联合用药预测疗效良好(≥90% %),具有较高的治疗潜力。这项工作的一个显著特点是,除了标准的前列腺癌药物外,我们还包括了小檗碱,一种无毒的天然化合物,具有有益的作用。这些计算结果为未来的实验和临床验证提供了一个框架,这对于确认预测药物组合的治疗相关性是必要的。
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引用次数: 0
Ginsenoside Rb1 as a multi-target modulator in heart failure: Mechanistic insights into extracellular remodeling and transcriptional pathways from network pharmacology, molecular dynamics, and binding free energy analyses 人参皂苷Rb1作为心力衰竭的多靶点调节剂:从网络药理学、分子动力学和结合自由能分析中对细胞外重塑和转录途径的机制见解
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-12 DOI: 10.1016/j.compbiolchem.2026.108902
Qiang Yin , Ying Liu , Ibrahim Kehinde , Mahmoud Soliman , Baobao Bai

Background

Heart failure is a leading global health burden, often driven by Angiotensin II (Ang II)–induced processes such as inflammation, fibrosis, and extracellular matrix remodeling. These mechanisms involve multiple protein hubs, making single-target drugs insufficient. Natural products such as Ginsenoside Rb1, a major bioactive constituent of Panax ginseng, have emerged as promising multi-target agents, though their mechanistic roles in cardiovascular protection remain incompletely defined.

Methods

A combined strategy of network pharmacology, protein–protein interaction analysis, molecular docking, molecular dynamics (MD) simulations, and MM/GBSA binding free energy calculations was employed. Hub proteins associated with Ang II–mediated heart failure were identified, followed by docking and MM/GBSA analyses to compare the binding affinity of Rb1 against reference drugs (Losartan, Enalapril, and Carvedilol). Protein–ligand interaction maps, hydrophobicity profiling, and electrostatic potential (ESP) analyses were used to elucidate binding mechanisms.

Results

Five hub proteins—MMP9, FN1, JUN, FGF2, and STAT3—were identified as central to Ang II–driven remodeling, inflammation, and transcriptional regulation. MM/GBSA analyses revealed consistently favorable ΔGbind values for Rb1, including −36.40 kcal/mol (FN1), −35.30 kcal/mol (STAT3), and −33.70 kcal/mol (JUN), which were comparable to or exceeded those of the reference drugs. In contrast, Rb1 showed moderate affinity at MMP9 (−31.80 kcal/mol) and FGF2 (−30.70 kcal/mol). Interaction plots demonstrated that the amphipathic nature of Rb1, with a bulky hydrophobic backbone and multiple polar hydroxyl groups, enabled multidentate hydrogen bonding, van der Waals stabilization, and π-alkyl interactions across diverse binding pockets. Hydrophobicity and ESP mapping further confirmed that Rb1 adapts effectively to both hydrophobic and polar microenvironments, explaining its broader multi-target binding capacity compared to the more structurally restricted reference drugs.

Conclusion

This study highlights Ginsenoside Rb1 as a promising polypharmacological candidate for heart failure, showing strong and adaptable binding to multiple Ang II–related targets.
心衰是全球主要的健康负担,通常由血管紧张素II (Ang II)诱导的炎症、纤维化和细胞外基质重塑等过程驱动。这些机制涉及多个蛋白质枢纽,使得单靶点药物不足。天然产物,如人参皂苷Rb1,是人参的主要生物活性成分,已成为有希望的多靶点药物,尽管其在心血管保护中的机制作用尚未完全确定。方法采用网络药理学、蛋白相互作用分析、分子对接、分子动力学模拟和MM/GBSA结合自由能计算相结合的策略。确定了与Ang ii介导的心力衰竭相关的枢纽蛋白,随后进行对接和MM/GBSA分析,比较Rb1对参比药物(氯沙坦、依那普立和卡维地洛)的结合亲和力。蛋白质-配体相互作用图、疏水性分析和静电电位(ESP)分析用于阐明结合机制。结果5个中心蛋白——mmp9、FN1、JUN、FGF2和stat3被确定为Ang ii驱动的重塑、炎症和转录调控的核心。MM/GBSA分析显示,Rb1的ΔGbind值一致有利,包括−36.40 kcal/mol (FN1),−35.30 kcal/mol (STAT3)和−33.70 kcal/mol (JUN),与参考药物相当或超过参考药物。相比之下,Rb1对MMP9(−31.80 kcal/mol)和FGF2(−30.70 kcal/mol)具有中等亲和力。相互作用图表明,Rb1具有两亲性,具有庞大的疏水主链和多个极性羟基,可实现多齿氢键、范德华稳定和π-烷基相互作用。疏水性和ESP图谱进一步证实了Rb1对疏水性和极性微环境的有效适应,这解释了与结构受限的参考药物相比,Rb1具有更广泛的多靶点结合能力。结论:人参皂苷Rb1是一种有前景的治疗心力衰竭的多药理学候选药物,与多种Ang ii相关靶点具有很强的适应性结合。
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引用次数: 0
Thyroid hormone signaling causally influences pancreatic disease risk: Evidence from Mendelian randomization and multi-omics integration 甲状腺激素信号对胰腺疾病风险有因果影响:来自孟德尔随机化和多组学整合的证据
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-15 DOI: 10.1016/j.compbiolchem.2026.108897
Xuejiao Wu , Zilin Yang
The relationship between thyroid function and pancreatic disease has been observed clinically, yet causality remains unestablished. We applied bidirectional Mendelian randomization using genetic instruments from genome-wide association studies encompassing over 500,000 individuals to determine causal relationships. We demonstrate that genetic liability to hypothyroidism substantially protects against acute pancreatitis (odds ratio 0.37, 95 % CI 0.17–0.80). Genetically elevated basal metabolic rate increases acute pancreatitis risk (OR 1.16) while decreasing chronic pancreatitis risk (OR 0.77), revealing divergent pathophysiological mechanisms. No causal relationship exists between thyroid function and pancreatic cancer. To elucidate underlying mechanisms, we performed multi-omics analysis including bulk RNA sequencing from 172 pancreatic adenocarcinomas, single-cell RNA sequencing from acute pancreatitis (32,830 cells), chronic pancreatitis (30,426 cells), and pancreatic cancer (95,751 cells), and GeoMx spatial transcriptomics (253 regions). High metabolic gene expression predicts favorable cancer survival (hazard ratio 0.52, P = 0.0015). Single-cell analysis reveals myeloid-specific metabolic gene downregulation in chronic pancreatitis and 31-fold upregulation of the thyroid hormone-inactivating enzyme DIO3 in tumor epithelial cells. Spatial transcriptomics demonstrates that PPARGC1A downregulation occurs in preneoplastic lesions before malignant transformation. These findings establish thyroid function as a causal determinant of pancreatitis susceptibility, identify cell type-specific mechanisms including local thyroid hormone inactivation and metabolic reprogramming, and demonstrate that patient-derived organoids better preserve prognostically favorable metabolic phenotypes than cell lines. Thyroid function represents a potentially modifiable risk factor for inflammatory pancreatic disease.
甲状腺功能与胰腺疾病之间的关系已在临床上观察到,但因果关系仍未确定。我们采用双向孟德尔随机化方法,使用来自涵盖50多万个体的全基因组关联研究的遗传工具来确定因果关系。我们证明,甲状腺功能减退的遗传倾向在很大程度上保护了急性胰腺炎(优势比0.37,95 % CI 0.17-0.80)。遗传基础代谢率升高会增加急性胰腺炎风险(OR 1.16),而降低慢性胰腺炎风险(OR 0.77),揭示不同的病理生理机制。甲状腺功能与胰腺癌之间不存在因果关系。为了阐明潜在的机制,我们进行了多组学分析,包括172个胰腺腺癌的大量RNA测序,急性胰腺炎(32,830个细胞),慢性胰腺炎(30,426个细胞)和胰腺癌(95,751个细胞)的单细胞RNA测序,以及GeoMx空间转录组学(253个区域)。高代谢基因表达预示有利的癌症生存(风险比0.52,P = 0.0015)。单细胞分析显示,慢性胰腺炎患者骨髓特异性代谢基因下调,肿瘤上皮细胞中甲状腺激素失活酶DIO3上调31倍。空间转录组学表明,PPARGC1A下调发生在恶性转化前的肿瘤前病变。这些发现确立了甲状腺功能是胰腺炎易感性的因果决定因素,确定了细胞类型特异性机制,包括局部甲状腺激素失活和代谢重编程,并证明患者来源的类器官比细胞系更好地保留了预后有利的代谢表型。甲状腺功能是炎症性胰腺疾病的一个潜在可改变的危险因素。
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引用次数: 0
DisSubFormer: A subgraph transformer model for disease subgraph representation and comorbidity prediction DisSubFormer:一个用于疾病子图表示和共病预测的子图转换器模型。
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-02-03 DOI: 10.1016/j.compbiolchem.2026.108935
Ashwag Altayyar, Li Liao
Disease comorbidity—the co-occurrence of multiple diseases in the same individual—is increasingly prevalent and poses major clinical and biological challenges. Computational approaches for studying disease relationships and predicting comorbidity have evolved from overlap-based similarity measures to molecular network modeling and graph deep learning. However, existing methods often (i) learn global or subgraph-based disease embeddings without modeling the topology of fragmented disease subgraphs in a comorbidity-adaptive manner, or (ii) incorporate Gene Ontology (GO) information in ways that underutilize GO’s hierarchical ancestry and deeper functional abstractions. In this work, we propose DisSubFormer, a subgraph Transformer model for disease subgraph representation learning and comorbidity prediction. We first learn unified protein representations by integrating structural patterns from a PPI network with GO-aware functional information, explicitly incorporating GO’s hierarchical ancestry. We next sample biologically informed anchor patches in a property-aware manner to prioritize disease-relevant regions of the PPI network, replacing full-graph attention with subgraph-to-subgraph attention between disease subgraphs and these anchor patches to improve scalability and relevance. Specifically, DisSubFormer introduces a learnable multi-head attention mechanism where each head attends over a distinct anchor-patch type, with head-specific relational terms to capture complementary positional, neighborhood, and structural properties within fragmented disease subgraphs for comorbidity prediction. Experiments on a benchmark comorbidity dataset demonstrate that DisSubFormer consistently outperforms state-of-the-art methods, achieving an AUROC of 0.97.
疾病合并症——同一个体同时出现多种疾病——越来越普遍,并带来了重大的临床和生物学挑战。研究疾病关系和预测共病的计算方法已经从基于重叠的相似性度量发展到分子网络建模和图深度学习。然而,现有的方法通常(i)学习全局或基于子图的疾病嵌入,而没有以共病自适应的方式对碎片化疾病子图的拓扑进行建模,或者(ii)以未充分利用GO的层次祖先和更深的功能抽象的方式合并基因本体(GO)信息。在这项工作中,我们提出了DisSubFormer,一个用于疾病子图表示学习和共病预测的子图转换器模型。我们首先通过整合来自PPI网络的结构模式和氧化石墨烯感知功能信息来学习统一的蛋白质表示,明确地结合氧化石墨烯的等级祖先。接下来,我们以一种属性感知的方式对生物学信息锚定补丁进行采样,优先考虑PPI网络中与疾病相关的区域,用疾病子图和锚定补丁之间的子图对子图的关注取代全图关注,以提高可扩展性和相关性。具体来说,DisSubFormer引入了一种可学习的多头注意机制,其中每个头部都关注一个不同的锚点补丁类型,使用特定于头部的关系术语来捕获碎片化疾病子图中互补的位置、邻域和结构属性,以预测共病。在一个基准共病数据集上的实验表明,DisSubFormer始终优于最先进的方法,达到了0.97的AUROC。
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引用次数: 0
Chronic kidney disease detection using XceptionNet with Harmonic Addax Optimization 基于谐波Addax优化的XceptionNet慢性肾脏疾病检测
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-22 DOI: 10.1016/j.compbiolchem.2026.108921
Suruchi Gaurav Dedgaonkar , Geeta S Navale , Priya Shelke , Amol Vishwanath Dhumane
Chronic Kidney Disease (CKD) refers to a persistent and progressive impairment of kidney function occurring over a prolonged duration. Impaired kidney filtration can lead to the accumulation of waste products and excess fluid in the bloodstream, contributing to the development of secondary medical conditions. CKD leads to high blood pressure, glomerulonephritis, diabetes, and polycystic kidney disease. However, early detection of CKD is significant for decreasing complications and preventing kidney failure. However, generalization and class imbalance issues complicate the detection process. In order to improve CKD detection and resolve current limitations, an optimized deep learning approach is presented in this paper. This paper proposes a CKD detection framework that integrates XceptionNet with the Harmonic Addax Optimization Algorithm (HAOA). First, the chronic kidney dataset is provided as input and undergoes sigmoid normalization to ensure proper data scaling and structural consistency. Next, feature fusion is performed by a Deep Belief Network (DBN) with a Soergel metric. Then, data augmentation is performed utilizing the Synthetic Minority Overlapping Technique (SMOTE). At last, CKD detection is done using Xception with HAOA. Here, HAOA is developed by combining Harmonic analysis and the Addax Optimization Algorithm (AOA). The performance of the proposed Xception with the HAOA method is analyzed by the CKD dataset 1, CKD dataset 2, and the Risk Factor Prediction of CKD Dataset. It also achieves a good True Positive Rate (TPR) value of 94.679 %, True Negative Rate (TNR) of 92.777 %, and accuracy of 93.667 %, a precision of 92.258 %, and an F1-score of 93.453 %. The proposed model serves as an effective tool for early CKD diagnosis, reducing the risk of kidney failure and improving potential outcomes.
慢性肾脏疾病(CKD)是指一种持续和进行性肾功能损害发生在一个较长的时间。肾脏滤过功能受损可导致废物积累和血液中液体过多,从而导致继发性疾病的发展。慢性肾病会导致高血压、肾小球肾炎、糖尿病和多囊肾病。然而,早期发现CKD对于减少并发症和预防肾衰竭具有重要意义。然而,泛化和类不平衡问题使检测过程复杂化。为了改进CKD检测并解决当前的局限性,本文提出了一种优化的深度学习方法。本文提出了一种将XceptionNet与谐波Addax优化算法(HAOA)相结合的CKD检测框架。首先,将慢性肾脏数据集作为输入,并进行s形归一化,以确保适当的数据缩放和结构一致性。其次,采用基于Soergel度量的深度信念网络(DBN)进行特征融合。然后,利用合成少数重叠技术(SMOTE)进行数据增强。最后,利用Xception和HAOA实现CKD检测。本文将谐波分析与Addax优化算法(AOA)相结合,开发了HAOA。通过CKD数据集1、CKD数据集2和CKD数据集的风险因素预测分析了HAOA方法的异常性能。真阳性率(TPR)为94.679 %,真阴性率(TNR)为92.777 %,准确率为93.667 %,精密度为92.258 %,f1评分为93.453 %。该模型可作为早期CKD诊断的有效工具,降低肾衰竭的风险并改善潜在的预后。
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Computational Biology and Chemistry
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