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DeeppestNet: An end-to-end framework for high-performance crop pest recognition DeeppestNet:高效作物病虫害识别的端到端框架
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.2026.108916
K.S. Guruprakash , P. Siva Karthik , A. Ramachandran , K. Gayathri
Accurate and efficient crop-pest identification is essential for sustainable agriculture. However, noisy background regions make it difficult to accurately identify crop pests since they obstruct the feature extraction process. Furthermore, pest recognition remains challenging due to limited data and algorithmic complexity. DeeppestNet, a graph pyramid attention-based Bidirectional Long Short-Term Memory (GPA-BiLSTM) model, is proposed as a solution to this problem. In order to improve the recognition process, the Contrast adaptive limited histogram equalization (CLAHE) approach is first used to increase the image quality. Rich feature maps of fine-grained feature regions are intended to be provided by the adaptive pyramid attention module with a cross stage partial (AP-CSP) backbone network. In order to acquire multi-scale spatial features and improve recognition skills through graphical relations, a multi-level pyramid structure is also provided. Graph-based BiLSTM (G-BiLSTM) is used for the final classification, and the Grey Wolf-Salp Swarm Optimization (GW-SSO) technique is used to improve the accuracy. Robust multi-dimensional structural features are extracted with spatial and temporal dependencies when combining G-BiLSTM with a CNN backbone. Additionally, the integration of GW and SSO improves the performance by assuring high precision, fast convergence and balance exploration, exploitation strategies are achieved. The IP-102 dataset is used to assess the proposed pest detection method utilizing evaluation measures like f-measure, recall, precision, and so on. DeeppestNet has achieved 4.6 % higher accuracy than EfficientNet. The experimental outcomes demonstrate that the proposed method performs better than the greatest advanced Deep Learning (DL) algorithms. The proposed method is accurate, efficient, and computationally efficient in comparison to other methods.
准确、高效的作物病虫害鉴定对可持续农业至关重要。然而,噪声背景区域阻碍了特征提取过程,给作物害虫的准确识别带来了困难。此外,由于有限的数据和算法复杂性,害虫识别仍然具有挑战性。为了解决这一问题,提出了一种基于图金字塔的双向长短期记忆(GPA-BiLSTM)模型。为了改善识别过程,首先采用对比度自适应有限直方图均衡化(CLAHE)方法来提高图像质量。采用跨阶段部分(AP-CSP)骨干网的自适应金字塔注意力模块提供了丰富的细粒度特征区域的特征映射。为了获取多尺度空间特征,通过图形关系提高识别能力,还提供了多层次的金字塔结构。采用基于图的BiLSTM (G-BiLSTM)进行最终分类,并采用灰狼- salp群优化(GW-SSO)技术提高分类精度。将G-BiLSTM与CNN骨干网相结合,提取出具有时空依赖关系的鲁棒多维结构特征。此外,单点阵和单点阵的集成通过保证高精度、快速收敛和平衡探索、开发策略来提高性能。IP-102数据集利用f-measure、召回率、精度等评价指标对提出的害虫检测方法进行评估。DeeppestNet的准确率比EfficientNet高4.6% %。实验结果表明,该方法优于最先进的深度学习(DL)算法。与其他方法相比,该方法具有精度高、效率高、计算效率高等优点。
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引用次数: 0
R-loop-driven molecular subtypes reveal prognostic and immunogenomic features in uterine corpus endometrial carcinoma r -环驱动的分子亚型揭示了子宫体子宫内膜癌的预后和免疫基因组特征
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-02-09 DOI: 10.1016/j.compbiolchem.2026.108947
Hui Liu, Yuanting Lai

Background

R-loops are three-stranded nucleic acid structures implicated in genome instability and cancer progression. However, the prognostic significance and mechanistic role of R-loops in uterine corpus endometrial carcinoma (UCEC) remain poorly understood.

Methods

Transcriptomic, clinical, mutational, and spatial data for UCEC were obtained from The Cancer Genome Atlas (TCGA) and public databases. Multiomics analyses, including prognostic modeling, survival analyses, differential expression analyses, copy number variation (CNV) profiling, somatic mutation comparisons, single-cell transcriptomics, spatial transcriptomics, and immune-related pathway exploration, were conducted to elucidate the biological implications of R-loop genes, matrix-specific CSDE1, and the associated SPP1 pathway. In vivo and in vitro functional experiments were conducted to evaluate the role of CSDE1 in UCEC.

Results

Elevated R-loop activity was associated with advanced clinical stage, high tumor grade, and poor survival outcomes in patients with UCEC. A robust prognostic model based on R-loop genes achieved high predictive accuracy across multiple datasets. Low-risk patients had higher tumor mutation burdens and distinct mutational profiles, whereas high-risk patients had more chromosomal instability and more CNV events. CSDE1 emerged as the top predictive gene, displaying fibroblast-specific expression and copy number-driven upregulation. Single-cell and spatial transcriptomics revealed that CSDE1⁺ fibroblasts actively communicated with immune cells via the SPP1 pathway and were spatially enriched in malignant, fibroblast-dense regions. High CSDE1 expression correlated with the activation of oncogenic pathways and the suppression of multiple steps in the cancer–immunity cycle. Furthermore, CSDE1 promoted the proliferation and migration of UCEC cells in vitro and in vivo by reducing R-loop accumulation and DNA damage.

Conclusion

R-loop activity and CSDE1 expression define a clinically relevant molecular program in UCEC that integrates genomic instability, immunosuppression, and stromal remodeling. These findings provide a basis for stratified prognosis and potential therapeutic targeting in endometrial cancer, suggesting that CSDE1 may be a promising new therapeutic target for the treatment of UCEC in the future.
dr -环是与基因组不稳定性和癌症进展有关的三链核酸结构。然而,r -环在子宫肌体子宫内膜癌(UCEC)中的预后意义和机制作用仍然知之甚少。方法从癌症基因组图谱(TCGA)和公共数据库中获取UCEC的转录组学、临床、突变和空间数据。通过多组学分析,包括预后建模、生存分析、差异表达分析、拷贝数变异(CNV)分析、体细胞突变比较、单细胞转录组学、空间转录组学和免疫相关途径探索,阐明了R-loop基因、基质特异性CSDE1和相关SPP1途径的生物学意义。通过体内和体外功能实验评价CSDE1在UCEC中的作用。结果在UCEC患者中,r环活性升高与晚期临床分期、高肿瘤分级和较差的生存结果相关。基于R-loop基因的稳健预后模型在多个数据集上实现了高预测精度。低危患者具有更高的肿瘤突变负担和不同的突变谱,而高危患者具有更多的染色体不稳定性和更多的CNV事件。CSDE1成为最重要的预测基因,显示成纤维细胞特异性表达和拷贝数驱动的上调。单细胞和空间转录组学显示,CSDE1 +成纤维细胞通过SPP1途径与免疫细胞积极交流,并在恶性成纤维细胞密集区空间富集。CSDE1的高表达与致癌途径的激活和癌症免疫周期中多个步骤的抑制相关。此外,CSDE1通过减少R-loop积累和DNA损伤,促进UCEC细胞在体外和体内的增殖和迁移。结论r -loop活性和CSDE1表达确定了UCEC中与临床相关的分子程序,该程序整合了基因组不稳定性、免疫抑制和基质重塑。这些发现为子宫内膜癌的分层预后和潜在的治疗靶向提供了基础,提示CSDE1可能是未来治疗UCEC的一个有希望的新治疗靶点。
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引用次数: 0
MYB: A potential therapeutic target in triple-negative breast cancer based on the PI3K/AKT signaling pathway MYB:基于PI3K/AKT信号通路的三阴性乳腺癌的潜在治疗靶点。
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-02-04 DOI: 10.1016/j.compbiolchem.2026.108938
Ziyu Zhuang, Jiayi Hu, Hongbo Yu, Yu Xie

Background

Compared to non-triple-negative breast cancer (Non-TNBC), triple-negative breast cancer (TNBC) exhibits significantly poorer prognosis. Previous research has confirmed that the PI3K/AKT pathway is closely associated with prognosis in breast cancer patients. Yet, it remains unclear whether this pathway is implicated in the prognostic differences observed between TNBC and Non-TNBC.

Methods

After downloading raw transcriptomic datasets from the GEO database and removing batch effects, we performed an integrated analysis to delineate how key genes drive the poor prognosis of TNBC. Functional enrichment, machine-learning-based feature selection, immune-cell infiltration profiling, drug-sensitivity screening, single-cell RNA sequencing and spatial transcriptomics were successively applied. Molecular-docking simulations were finally conducted to evaluate the binding affinity of MYB toward bioactive compounds derived from the Taohong Siwu Decoction.

Results

Across 113 algorithm combinations, MYB plays the most critical role in distinguishing TNBC from Non-TNBC. The constructed prognostic model confirms the significant association between MYB expression and patient outcomes. Immune cell infiltration, drug sensitivity, single-cell data analysis and spatial transcriptome revealed the specific mechanisms through which MYB influences patient prognosis. Molecular docking experiments demonstrate strong binding between key components in Taohong Siwu Decoction and MYB.

Conclusion

Based on multi-omics analysis, our findings indicate that the PI3K/AKT pathway is a key factor contributing to the significant prognostic disparity between TNBC and Non-TNBC. Within this pathway, the MYB gene emerges as a potential therapeutic target. This discovery provides a potential basis for future research exploring MYB as a therapeutic target for TNBC patients.
背景:与非三阴性乳腺癌(Non-TNBC)相比,三阴性乳腺癌(TNBC)的预后明显较差。既往研究证实,PI3K/AKT通路与乳腺癌患者预后密切相关。然而,尚不清楚该途径是否与TNBC和非TNBC之间观察到的预后差异有关。方法:在从GEO数据库下载原始转录组数据集并去除批次效应后,我们进行了综合分析,以描述关键基因如何驱动TNBC的不良预后。功能富集、基于机器学习的特征选择、免疫细胞浸润谱、药物敏感性筛选、单细胞RNA测序和空间转录组学相继应用。最后进行了分子对接模拟,以评估MYB对桃红四物汤中生物活性化合物的结合亲和力。结果:在113种算法组合中,MYB在区分TNBC和Non-TNBC中起着最关键的作用。构建的预后模型证实了MYB表达与患者预后之间的显著关联。免疫细胞浸润、药物敏感性、单细胞数据分析和空间转录组揭示了MYB影响患者预后的具体机制。分子对接实验表明桃红四物汤中关键成分与MYB结合较强。结论:基于多组学分析,我们的研究结果表明PI3K/AKT通路是导致TNBC和非TNBC预后显著差异的关键因素。在这一途径中,MYB基因成为一个潜在的治疗靶点。这一发现为未来探索MYB作为TNBC患者治疗靶点的研究提供了潜在的基础。
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引用次数: 0
Predicting curcumin release kinetics from nanocarriers using a physics-informed machine learning framework 使用物理信息机器学习框架预测纳米载体的姜黄素释放动力学
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-14 DOI: 10.1016/j.compbiolchem.2026.108907
Sonia Fathi-karkan , Abbas Rahdar

Background

Curcumin nanoformulations display highly heterogeneous release behaviors, yet the field lacks an integrated framework capable of predicting kinetics across diverse material classes. However, the diffusion parameters governing these systems have remained previously unresolved due to inconsistent experimental conditions and limited datasets.

Aim

Here we establish a physics-informed machine-learning framework that predicts curcumin release kinetics with unprecedented physical consistency across heterogeneous nanocarriers.

Methods

A curated dataset of 75 formulations was encoded using 13 physicochemical descriptors, and release kinetics were parameterized using a two-component diffusion model. A Physics-Informed Neural Network incorporating explicit monotonicity and non-negativity constraints was trained and benchmarked against Random Forest, XGBoost, and a multilayer neural network. External validation used 31 independent formulations.

Results

The model demonstrated 0.92 R², 2.15 MSE, and 98 % physical consistency, exceeding baseline methods by up to 1.6-fold. External validation achieved 0.885 R² and mean absolute errors < 0.08 across release-time distributions. Design-space mapping uncovered previously inaccessible parameter regions associated with rapid, balanced, and sustained-release profiles. Application-specific performance analyses showed 0.87–0.91 R², mean absolute error 2.10–4.30 h, and physical consistency 94–98 %.

Conclusions

This framework resolves key kinetic parameters across diverse nanocarriers with high fidelity and provides a new foundation for data-driven formulation engineering. The approach enables predictive optimization of curcumin delivery systems and opens the door to automated design of controlled-release nanomedicines.
姜黄素纳米配方显示出高度不均匀的释放行为,但该领域缺乏一个能够预测不同材料类别动力学的集成框架。然而,由于不一致的实验条件和有限的数据集,控制这些系统的扩散参数以前仍然没有解决。在这里,我们建立了一个物理信息的机器学习框架,预测姜黄素释放动力学,在异质纳米载体上具有前所未有的物理一致性。方法采用13个理化描述符对75个配方的数据集进行编码,并采用双组分扩散模型对其释放动力学进行参数化。一个包含显式单调性和非负性约束的物理信息神经网络被训练并与随机森林、XGBoost和多层神经网络进行基准测试。外部验证使用了31个独立的配方。结果该模型的R²为0.92 ,MSE为2.15,物理一致性为98 %,比基线方法高出1.6倍。外部验证获得0.885 R²和平均绝对误差<; 0.08跨发布时间分布。设计空间映射揭示了与快速、平衡和持续发布概要文件相关的以前无法访问的参数区域。特定应用程序的性能分析结果为0.87-0.91 R²,平均绝对误差为2.10-4.30 h,物理一致性为94-98 %。结论该框架可高保真地解析不同纳米载体的关键动力学参数,为数据驱动的处方工程提供了新的基础。该方法使姜黄素传递系统的预测优化成为可能,并为控制释放纳米药物的自动化设计打开了大门。
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引用次数: 0
Multiscale computational modeling integrated with in vitro evaluation of green-synthesized 2,3-dihydroquinazolin-4(1 H)-ones targeting U87 glioblastoma cells 结合多尺度计算模型的体外评价绿色合成的靶向U87胶质母细胞瘤细胞的2,3-二氢喹唑啉-4(1 H)-ones
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-28 DOI: 10.1016/j.compbiolchem.2026.108929
Sathiaseelan Perumal , Perumal Muthuraja , Venkatesan Muthukumar , Paramasivam Manisankar , Viswanathan Subramanian
Glioblastoma multiforme (GBM) is a highly aggressive brain tumour with limited therapeutic options, largely owing to the poor blood–brain barrier (BBB) permeability of current drugs. Quinazolinone derivatives represent an important class of heterocycles with diverse pharmacological potential; however, their activity against U87 glioblastoma cells has not been previously reported. In this study, a series of 2,3-dihydroquinazolin-4(1 H)-one derivatives (DHQs) were synthesised through a sustainable PEG-400-mediated multicomponent protocol performed in a sealed tube, providing an efficient and environmentally benign route to access this pharmacologically important scaffold. To identify potential glioblastoma inhibitors, a multiscale computational pipeline integrating DFT descriptors, ADME screening, molecular docking, molecular dynamics (MD) simulations, MM/GBSA, principal component analysis (PCA), and free energy landscape (FEL) calculations was employed. Among the synthesised molecules, compound 1h emerged as the most promising candidate, exhibiting the highest binding affinity towards EGFR (−9.11 kcal mol⁻¹) and favourable CNS-relevant physicochemical properties. MD simulations confirmed the structural stability of the 1h–3POZ complex for over 100 ns, as supported by low RMSD values, restricted residue fluctuations, and a stable free-energy profile. Experimental validation using the MTT assay on U87 glioblastoma cells demonstrated that compound 1h exhibited potent cytotoxicity (IC₅₀ = 16.57 ± 0.90μM), significantly outperforming temozolomide. Overall, this study presents the first integrated green-synthetic and computational-experimental evaluation of DHQs against U87 cells, highlighting compound 1h as a promising lead for glioblastoma drug discovery.
多形性胶质母细胞瘤(GBM)是一种高度侵袭性的脑肿瘤,治疗选择有限,主要是由于目前药物的血脑屏障(BBB)渗透性差。喹唑啉酮衍生物是一类重要的杂环化合物,具有多种药理潜力;然而,它们对U87胶质母细胞瘤细胞的活性尚未见报道。在这项研究中,一系列2,3-二氢喹唑啉-4(1 H)- 1衍生物(DHQs)通过可持续的peg -400介导的多组分协议在密封管中进行合成,提供了一个有效和环保的途径来获得这种重要的药理学支架。为了识别潜在的胶质母细胞瘤抑制剂,采用了多尺度计算管道,包括DFT描述符、ADME筛选、分子对接、分子动力学(MD)模拟、MM/GBSA、主成分分析(PCA)和自由能景观(FEL)计算。在合成的分子中,化合物1h表现出对EGFR的最高结合亲和力(- 9.11 kcal mol⁻¹)和良好的cns相关的物理化学性质,是最有希望的候选者。MD模拟证实了1h-3POZ配合物在100 ns以上的结构稳定性,RMSD值低,残留波动受限,自由能分布稳定。在U87胶质母细胞瘤细胞上使用MTT检测的实验验证表明,化合物1h具有强效的细胞毒性(IC₅₀= 16.57 ± 0.90μM),显著优于替莫唑胺。总体而言,本研究首次提出了针对U87细胞的dhq的绿色合成和计算实验综合评估,突出了化合物1h作为胶质母细胞瘤药物发现的有希望的先导物。
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引用次数: 0
Dual inhibition of AChE and GSK-3β by flavonoids of Bergenia ciliata: Molecular dynamics insights into anti-Alzheimer’s activity 毛缕草黄酮类化合物对AChE和GSK-3β的双重抑制:抗阿尔茨海默病活性的分子动力学见解
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.2026.108908
James H. Zothantluanga , Bharath Kumar Chagaleti , Dhritiman Roy , Mohnad Abdalla , Amr Ahmed El-Arabey , Nada F. Alahmady , Niraj Kumar Jha
Alzheimer's disease (AD) is one of the most prevalent neurodegenerative disorders and is also responsible for more than half of all dementia cases. In our ongoing efforts to identify promising phytocompounds as potential modulators of AD-related molecular targets, we studied 53 phytocompounds from Bergenia ciliata, a medicinal plant known for its in vivo anti-Alzheimer activity. Acetylcholinesterase (AChE), GSK-3β, and β-site amyloid precursor protein cleaving enzyme (BACE1) were the target proteins. Molecular docking and 100 ns molecular dynamics (MD) simulations revealed that 3-O-galloylcatechin and 3-O-galloylepicatechin showed favorable interactions with AChE and GSK-3β, as they were able to outperform the positive controls in all of the studied parameters. However, the MM-GBSA binding free energy calculations revealed that only 3-O-galloylepicatechin, but not 3-O-galloylcatechin, outperformed the positive control of GSK-3β. Density functional theory (DFT) studies revealed that 3-O-galloylcatechin and 3-O-galloylepicatechin were stable and chemically reactive at the active sites of AChE and GSK-3β. The in-silico findings suggest that the observed in-vivo anti-Alzheimer activity of B. ciliata may be partly associated with the favorable molecular interactions of 3-O-galloylcatechin and 3-O-galloylepicatechin with AChE and GSK-3β. The current findings highlight the structural and mechanistic relevance of B. ciliata phytocompounds in modulating AD–associated targets. Based on the current findings, medicinal plants that contain 3-O-galloylcatechin and 3-O-galloylepicatechin may also be screened for their interactions with AD–related molecular targets.
阿尔茨海默病(AD)是最普遍的神经退行性疾病之一,也是所有痴呆症病例中一半以上的原因。在我们持续努力寻找有希望的植物化合物作为ad相关分子靶点的潜在调节剂的过程中,我们研究了53种植物化合物,这些植物来自于一种以其体内抗阿尔茨海默病活性而闻名的药用植物——毛毛蒿。乙酰胆碱酯酶(AChE)、GSK-3β和β位点淀粉样蛋白前体蛋白切割酶(BACE1)为靶蛋白。分子对接和100 ns分子动力学(MD)模拟表明,3- o -没食子儿茶素和3- o -没食子表儿茶素与AChE和GSK-3β表现出良好的相互作用,在所有研究参数上都优于阳性对照。然而,MM-GBSA结合自由能计算显示,只有3- o没食子表儿茶素优于GSK-3β阳性对照,3- o没食子儿茶素优于GSK-3β。密度泛函理论(DFT)研究表明,3- o -没食子儿茶素和3- o -没食子表儿茶素在AChE和GSK-3β的活性位点具有稳定性和化学活性。实验结果提示,毛纤毛虫体内抗阿尔茨海默病活性可能与3- o -没食子儿茶素和3- o -没食子表儿茶素与乙酰胆碱酯酶和GSK-3β的分子相互作用有关。目前的研究结果强调了纤毛杆菌植物化合物在调节ad相关靶点中的结构和机制相关性。基于目前的研究结果,含有3- o -没食子儿茶素和3- o -没食子表儿茶素的药用植物也可用于筛选它们与ad相关分子靶点的相互作用。
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引用次数: 0
A first passage time study of bacterial eradication under the influence of antibacterial agents 抗菌药物作用下细菌清除的首次通过时间研究
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-08 DOI: 10.1016/j.compbiolchem.2026.108889
Nafisa Siddiqui , Shivangi Chourasia , Aishani Ghosal , Rati Sharma
Studies concerning bacterial eradication have become important in the light of growing antibiotic resistance observed around the world. Hence, it is important to develop and optimize new strategies and discover alternatives for treatment against drug resistant bacteria. Considering this, we apply the method of first passage time (FPT) to theoretically scrutinize the bacterial population dynamics in the presence of antibacterial agents. First, we demonstrate that the extinction time for bacterial population in the presence of antibiotics can be lowered by reducing the growth rate of bacteria. Next, we examine the antibacterial role of silver nano-particles (AgNPs) against the pathogenic bacteria Escherichia coli. We find that in comparison to antibiotics, the same concentration of AgNPs require more time for complete clearance of the bacterial population. Therefore, in order to reduce this extinction time, we investigate the combined effect of AgNP and Ampicillin. Our results suggest that AgNP combined with Ampicillin can be a substitute in tackling resistance against E. coli.
鉴于世界各地观察到的日益增长的抗生素耐药性,有关细菌根除的研究变得重要。因此,开发和优化新策略并发现治疗耐药细菌的替代方法非常重要。考虑到这一点,我们应用首次通过时间(FPT)的方法来理论上审查细菌种群动态在抗菌剂的存在。首先,我们证明了抗生素可以通过降低细菌的生长速度来降低细菌种群的灭绝时间。接下来,我们研究了银纳米颗粒(AgNPs)对致病菌大肠杆菌的抗菌作用。我们发现,与抗生素相比,相同浓度的AgNPs需要更多的时间来完全清除细菌群。因此,为了缩短这种消失时间,我们研究AgNP和氨苄西林的联合作用。我们的结果表明AgNP联合氨苄西林可以作为解决大肠杆菌耐药性的替代品。
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引用次数: 0
Computational network pharmacology and bioassays to unveil the antidiabetic mechanism of Mukia maderasapatana-mediated selenium nanoparticles 计算网络药理学和生物测定揭示了Mukia maderasapatana介导的硒纳米颗粒的降糖机制
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-14 DOI: 10.1016/j.compbiolchem.2026.108901
R. Sowmya, S. Karthick Raja Namasivayam, G.S. Amrish Varshan, Krithika Shree Sivasuriyan
Diabetes mellitus remains a major global health challenge, necessitating the development of alternative therapeutic strategies with improved efficacy and safety. The present proof-of-concept study reports, a comparative evaluation of Mukia maderasapatana-mediated biogenic selenium nanoparticles (SeNPs), chemically synthesized SeNPs, and a chitosan–starch–selenium nanocomposite (SeNC) for antidiabetic potential. Biogenic SeNPs were successfully synthesized and stabilized by phytochemicals from M. maderasapatana, resulting in smaller particle size and greater colloidal stability compared to chemogenic formulations. In vitro assays demonstrated that biogenic SeNPs exhibited markedly greater inhibitory activity against α-amylase (IC₅₀: 60 µg/mL) and α-glucosidase (IC₅₀: 80 µg/mL) compared to chemogenic SeNPs and SeNC (IC₅₀: 120 µg/mL for both enzymes). Strong antioxidant activity was also observed, with biogenic SeNPs showing the highest DPPH and ABTS radical scavenging effects (up to 87 % inhibition at 140 µg/mL). Molecular docking identified chitosan, squalene, and dihydroxanthin as the most potent ligands, displaying high binding affinities across key diabetic targets, including α-amylase (−11.0 kcal/mol), α-glucosidase (−12.2 kcal/mol), glycogen phosphorylase (−11.7 kcal/mol), and PTP1B (−12.1 kcal/mol). Organ-specific docking further confirmed favorable safety profiles with strong yet non-toxic binding to CYP3A4, HSA, CA-II, and PPAR-γ. Collectively, these findings highlight Mukia-derived biogenic SeNPs as a promising therapeutic candidate with enhanced enzyme inhibitory, antioxidant, and molecular-targeting capabilities, establishing a foundational proof-of-concept for their development as antidiabetic nanomedicine.
糖尿病仍然是一个主要的全球健康挑战,需要发展具有更高疗效和安全性的替代治疗策略。目前的概念验证研究报告,比较了Mukia maderasapatana介导的生物源硒纳米颗粒(SeNPs)、化学合成的SeNPs和壳聚糖-淀粉-硒纳米复合材料(SeNC)的抗糖尿病潜力。利用植物化学物质成功合成了具有生物源性的SeNPs,与化学制剂相比,SeNPs的粒径更小,胶体稳定性更高。体外分析表明,与化学SeNPs和SeNC (IC₅₀:120 μ g/mL)相比,生物源SeNPs对α-淀粉酶(IC₅₀:60 μ g/mL)和α-葡萄糖苷酶(IC₅₀:80 μ g/mL)表现出明显更大的抑制活性。SeNPs还具有很强的抗氧化活性,生物源性SeNPs显示出最高的DPPH和ABTS自由基清除作用(在140 µg/mL时抑制率高达87% %)。分子对接发现,壳聚糖、角鲨烯和二羟基黄嘌呤是最有效的配体,在糖尿病的关键靶标上表现出很高的结合亲和力,包括α-淀粉酶(- 11.0 kcal/mol)、α-葡萄糖苷酶(- 12.2 kcal/mol)、糖原磷酸化酶(- 11.7 kcal/mol)和PTP1B(- 12.1 kcal/mol)。器官特异性对接进一步证实了良好的安全性,与CYP3A4、HSA、CA-II和PPAR-γ具有强而无毒的结合。总的来说,这些发现突出了木香树衍生的生物源性SeNPs作为一种有希望的治疗候选药物,具有增强的酶抑制、抗氧化和分子靶向能力,为其作为抗糖尿病纳米药物的发展建立了基础的概念证明。
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引用次数: 0
Evaluation of lawsone as a potential inhibitor of Staphylococcus aureus efflux pump mediated drugs resistance: An in-vitro and in-silico study 评估lawsone作为金黄色葡萄球菌外排泵介导的耐药性的潜在抑制剂:一项体外和计算机研究。
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.2026.108922
Bochra Kouidhi , Ehab Mostafa Mohamed Ali , Tarek Zmantar , Sihem Bayar , Abdelsattar M. Omar , Salman Bakr Hosawi , Hisham N. Altayeb , Imran Kazmi , Mustafa Zeyadi , Kamel Chaieb
Staphylococcus aureus (S. aureus) is a causative agent of a wide range of infections such as staphylococcal scalded skin syndrome, toxic shock syndrome, necrotizing pneumonia, endocarditis, and osteomyelitis, posing a significant challenge in clinical management. This study explores the antibacterial potential of lawsone on S. aureus using experimental and computational methods. The minimum inhibitory concentration (MIC) of lawsone (alone and in combination with erythromycin, tetracycline, norfloxacin and ciprofloxacin) on 8 clinical multi-drug resistant S. aureus was evaluated in vitro. The ability of lawsone to modulate antibiotic susceptibility was also determined. Molecular docking was carried out to investigate the binding affinities between lawsone and five efflux pumps (EPP) (NorA, NorB, MsrA, SepA, and MefA) and a ribosomal protection protein (TetM) implicated in S. aureus drug resistance. Furthermore, molecular dynamics simulations (MDS) were performed to assess the stability of the protein-ligand complexes throughout the 100 ns simulation period. In addition, the physicochemical properties, drug-likeness, and toxicity of the lawsone were predicted. Lawsone showed synergistic effects with erythromycin, tetracycline, norfloxacin, and ciprofloxacin, as indicated by the modulation factors (MF) ranging from 2 to > 16. Notably, the strain SA383 showed MF values of > 8 for two antibiotics (ciprofloxacin and erythromycin), and > 16 for norfloxacin. Molecular docking revealed strong binding affinities between lawsone and the evaluated S. aureus drug resistant proteins. The MDS confirmed the stability of the lawsone-protein complexes over 100 ns simulation period, supporting its potential as an efflux pump inhibitor (EPI). ADMET profiling of lawsone demonstrated favorable drug-likeness, pharmacokinetics, and low toxicity. Lawsone does not inhibit major cytochrome P450 enzymes. Toxicity predictions also showed no significant risks of carcinogenicity or immunotoxicity, but potential mutagenicity and nephrotoxicity which require further study. Lawsone also exhibits no predicted activity on androgen receptors, aromatase, or GABA receptors, indicating minimal hormonal disruption. These findings highlight lawsone as a promising candidate for the development of a new EPI candidate, particularly against antibiotic-resistant S. aureus.
金黄色葡萄球菌(S. aureus)是一种广泛感染的病原体,如葡萄球菌烫伤皮肤综合征、中毒性休克综合征、坏死性肺炎、心内膜炎和骨髓炎,对临床管理提出了重大挑战。本研究采用实验和计算相结合的方法探讨了lawsone对金黄色葡萄球菌的抑菌潜力。测定劳索酮(单用及联用红霉素、四环素、诺氟沙星、环丙沙星)对8种临床多重耐药金黄色葡萄球菌的最低抑菌浓度(MIC)。还确定了lawsone调节抗生素敏感性的能力。通过分子对接研究lawsone与5种外排泵(NorA、NorB、MsrA、SepA和MefA)以及与葡萄球菌耐药相关的核糖体保护蛋白(TetM)之间的结合亲和力。此外,进行分子动力学模拟(MDS)来评估整个100 ns模拟周期内蛋白质-配体复合物的稳定性。并对其理化性质、药物相似性和毒性进行了预测。Lawsone与红霉素、四环素、诺氟沙星、环丙沙星具有协同作用,调节因子(MF)范围为2 ~ 0 16。值得注意的是,菌株SA383对两种抗生素(环丙沙星和红霉素)的MF值为> 8,对诺氟沙星的MF值为> 16。分子对接显示lawsone与评估的金黄色葡萄球菌耐药蛋白之间具有很强的结合亲和力。MDS证实了lawson -protein复合物在100 ns模拟周期内的稳定性,支持其作为外排泵抑制剂(EPI)的潜力。lawsone的ADMET分析显示出良好的药物相似性、药代动力学和低毒性。Lawsone不抑制主要的细胞色素P450酶。毒性预测也显示没有显著的致癌性或免疫毒性风险,但潜在的致突变性和肾毒性需要进一步研究。Lawsone对雄激素受体、芳香化酶或GABA受体也没有预测的活性,表明激素干扰最小。这些发现突出了lawsone作为开发新的EPI候选物的前景,特别是针对耐抗生素金黄色葡萄球菌。
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引用次数: 0
Developing a trustworthy and explainable framework for classifying skin lesions through transfer learning and attention mechanisms 通过迁移学习和注意机制建立可信赖和可解释的皮肤损伤分类框架
IF 3.1 4区 生物学 Q2 BIOLOGY Pub Date : 2026-06-01 Epub Date: 2026-01-19 DOI: 10.1016/j.compbiolchem.2026.108914
Ali M. Duhaim , Noor S. Baqer , Mohammed A. Fadhel
Detection of high precision skin lesions, especially melanoma, are still a major challenge in medical imagination due to their close visual equality and lack of reliably labeled datasets. In this study, we introduce a deep learning sketch aimed at balancing clinical accuracy with clinical interpretation. The workflow starts with a series of preprosaresing steps: removing hair from dermoscopic images, correction with the cow and separating the wound area using a U-NET segmentation model. On top of that, a skilled-B4 network was properly set and increased with a competition block meditation module (CBAM) to focus the model on clinically important properties. In order to further strengthen performance, this spine was integrated into a dress with its –201 and Renex −50, where predictions are added through a soft poll. The model output was interpreted by the use of character comb and lime, which provides visual clarification of areas affecting the final decision. The training was held on him10000 datasets and valid against ISIC-2019 and pH, which demonstrated the contour's ability to generalize in different wound categories. The model reached 98.95 % accuracy, 98.7 % balanced accuracy and 99.6 % sensitivity to melanoma, improvement in recent benchmarks. By combining efficiency, interpretation and design of privacy and inconvenience, the framework gives a realistic step towards safe and reliable integration of AI units into dermatology practice.
高精度皮肤病变的检测,特别是黑色素瘤,仍然是医学想象中的一个主要挑战,因为它们的视觉接近平等,缺乏可靠的标记数据集。在本研究中,我们引入了一种深度学习草图,旨在平衡临床准确性和临床解释。工作流程从一系列预处理步骤开始:从皮肤镜图像中去除毛发,用牛进行校正,并使用U-NET分割模型分离伤口区域。最重要的是,适当设置熟练的b4网络,并通过竞争块冥想模块(CBAM)增加,以使模型专注于临床重要的特性。为了进一步加强性能,这条脊柱被整合到一件带有-201和Renex - 50的连衣裙中,其中通过软投票添加了预测。通过使用字符梳和石灰来解释模型输出,这为影响最终决策的区域提供了视觉上的澄清。在him10000个数据集上进行了训练,并在ISIC-2019和pH下有效,这证明了轮廓线在不同伤口类别中的泛化能力。该模型的准确率达到98.95 %,平衡准确率达到98.7 %,对黑色素瘤的敏感性达到99.6 %,比最近的基准有所提高。通过结合效率、隐私和不便的解释和设计,该框架为将人工智能设备安全可靠地整合到皮肤科实践中迈出了现实的一步。
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