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Ontology-Based Data Collection for a Hybrid Outbreak Detection Method Using Social Media 利用社交媒体的混合疫情检测方法基于本体的数据收集。
IF 3.7 4区 生物学 Q1 BIOCHEMICAL RESEARCH METHODS Pub Date : 2024-08-13 DOI: 10.1109/TNB.2024.3442912
Ghazaleh Babanejaddehaki;Aijun An;Heidar Davoudi
Given the persistent global challenge presented by rapidly spreading diseases, as evidenced notably by the widespread impact of the COVID-19 pandemic on both human health and economies worldwide, the necessity of developing effective infectious disease prediction models has become of utmost importance. In this context, the utilization of online social media platforms as valuable tools in healthcare settings has gained prominence, offering direct avenues for disseminating critical health information to the public in a timely and accessible manner. Propelled by the ubiquitous accessibility of the internet through computers and mobile devices, these platforms promise to revolutionize traditional detection methods, providing more immediate and reliable epidemiological insights. Leveraging this paradigm shift, our proposed framework harnesses Twitter data associated with infectious disease symptoms, employing ontology to identify and curate relevant tweets. Central to our methodology is a hybrid model that integrates XGBoost and Bidirectional Long Short-Term Memory (BiLSTM) architectures. The integration of XGBoost addresses the challenge of handling small dataset sizes, inherent during outbreaks due to limited time series data. XGBoost serves as a cornerstone for minimizing the loss function and identifying optimal features from our multivariate time series data. Subsequently, the combined dataset, comprising original features and predicted values by XGBoost, is channeled into the BiLSTM for further processing. Through extensive experimentation with a dataset spanning multiple infectious disease outbreaks, our hybrid model demonstrates superior predictive performance compared to state-of-the-art and baseline models. By enhancing forecasting accuracy and outbreak tracking capabilities, our model offers promising prospects for assisting health authorities in mitigating fatalities and proactively preparing for potential outbreaks.
鉴于快速传播的疾病所带来的持续性全球性挑战,特别是 COVID-19 大流行病对全球人类健康和经济造成的广泛影响,开发有效的传染病预测模型已变得极为重要。在此背景下,网络社交媒体平台作为医疗保健领域的重要工具,为及时、便捷地向公众传播重要的健康信息提供了直接途径。在通过电脑和移动设备无处不在地访问互联网的推动下,这些平台有望彻底改变传统的检测方法,提供更即时、更可靠的流行病学见解。利用这一模式转变,我们提出的框架利用与传染病症状相关的 Twitter 数据,采用本体论来识别和整理相关推文。我们方法的核心是一个混合模型,它集成了 XGBoost 和双向长短期记忆(BiLSTM)架构。XGBoost 的集成解决了处理小数据集的难题,这是在爆发期间因时间序列数据有限而固有的问题。XGBoost 是最小化损失函数和从多元时间序列数据中识别最佳特征的基石。随后,由原始特征和 XGBoost 预测值组成的组合数据集被导入 BiLSTM 进行进一步处理。通过对跨越多种传染病爆发的数据集进行广泛实验,我们的混合模型与最先进的模型和基线模型相比,显示出了卓越的预测性能。通过提高预测准确性和疫情跟踪能力,我们的模型有望协助卫生部门减少死亡人数,并为潜在的疫情爆发做好积极准备。
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引用次数: 0
A Controllability Reinforcement Learning Method for Pancreatic Cancer Biomarker Identification 胰腺癌生物标记物识别的可控性强化学习方法
IF 3.7 4区 生物学 Q1 BIOCHEMICAL RESEARCH METHODS Pub Date : 2024-08-12 DOI: 10.1109/TNB.2024.3441689
Yan Wang;Jie Hong;Yuting Lu;Nan Sheng;Yuan Fu;Lili Yang;Lingyu Meng;Lan Huang;Hao Wang
Pancreatic cancer is one of the most malignant cancers with rapid progression and poor prognosis. The use of transcriptional data can be effective in finding new biomarkers for pancreatic cancer. Many network-based methods used to identify cancer biomarkers are proposed, among which the combination of network controllability appears. However, most of the existing methods do not study RNA, rely on priori and mutations information, or can only achieve classification tasks. In this study, we propose a method combined Relational Graph Convolutional Network and Deep Q-Network called RDDriver to identify pancreatic cancer biomarkers based on multi-layer heterogeneous transcriptional regulation network. Firstly, we construct a regulation network containing long non-coding RNA, microRNA, and messenger RNA. Secondly, Relational Graph Convolutional Network is used to learn the node representation. Finally, we use the idea of Deep Q-Network to build a model, which score and prioritize each RNA with the Popov-Belevitch-Hautus criterion. We train RDDriver on three small simulated networks, and calculate the average score after applying the model parameters to the regulation networks separately. To demonstrate the effectiveness of the method, we perform experiments for comparison between RDDriver and other eight methods based on the approximate benchmark of three types cancer drivers RNAs.
胰腺癌是恶性程度最高的癌症之一,病情发展快,预后差。利用转录数据可以有效地找到胰腺癌的新生物标志物。人们提出了许多基于网络的癌症生物标记物识别方法,其中包括网络可控性组合。然而,现有方法大多不研究 RNA,依赖先验信息和突变信息,或只能完成分类任务。在本研究中,我们提出了一种结合关系图卷积网络和深度 Q 网络的方法,称为 RDDriver,用于识别基于多层异构转录调控网络的胰腺癌生物标记物。首先,我们构建了一个包含长非编码 RNA、microRNA 和信使 RNA 的调控网络。其次,使用关系图卷积网络学习节点表示。最后,我们利用深度 Q 网络的思想建立了一个模型,用 Popov-Belevitch-Hautus 准则对每个 RNA 进行评分和优先排序。我们在三个小型模拟网络上训练 RDDriver,并在将模型参数分别应用于调控网络后计算平均得分。为了证明该方法的有效性,我们以三种癌症驱动 RNA 为近似基准,进行了 RDDriver 与其他八种方法的比较实验。
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引用次数: 0
TC-DTA: Predicting Drug-Target Binding Affinity With Transformer and Convolutional Neural Networks TC-DTA:利用变压器和卷积神经网络预测药物与目标的结合亲和力。
IF 3.7 4区 生物学 Q1 BIOCHEMICAL RESEARCH METHODS Pub Date : 2024-08-12 DOI: 10.1109/TNB.2024.3441590
Xiwei Tang;Yiqiang Zhou;Mengyun Yang;Wenjun Li
Bioinformatics is a rapidly evolving field that applies computational methods to analyze and interpret biological data. A key task in bioinformatics is identifying novel drug-target interactions (DTIs), which plays a crucial role in drug discovery. Most computational approaches treat DTI prediction as a binary classification problem, determining whether drug-target pairs interact. However, with the growing availability of drug-target binding affinity data, this binary task can be reframed as a regression problem focused on drug-target affinity (DTA). DTA quantifies the strength of drug-target binding, offering more detailed insights than DTI and serving as a valuable tool for virtual screening in drug discovery. Accurately predicting compound interactions with targets can accelerate the drug development process. In this study, we introduce a deep learning model named TC-DTA for DTA prediction, leveraging convolutional neural networks (CNN) and the encoder module of the transformer architecture. We begin by extracting raw drug SMILES strings and protein amino acid sequences from the dataset, which are then represented using various encoding methods. Subsequently, we employ CNN and the transformer’s encoder module to extract features from the drug SMILES strings and protein sequences, respectively. Finally, the feature information is concatenated and input into a multi-layer perceptron to predict binding affinity scores. We evaluated our model on two benchmark DTA datasets, Davis and KIBA, comparing it with methods such as KronRLS, SimBoost, and DeepDTA. Our model, TC-DTA, outperformed these baseline methods based on evaluation metrics like Mean Squared Error (MSE), Concordance Index (CI), and Regression towards the Mean Index ( ${r}_{m}^{{2}}$ ). These results highlight the effectiveness of the Transformer’s encoder and CNN in extracting meaningful representations from sequences, thereby enhancing DTA prediction accuracy. This deep learning model can accelerate drug discovery by identifying drug candidates with high binding affinity to specific targets. Compared to traditional methods, machine learning technology offers a more effective and efficient approach to drug discovery.
生物信息学是一个发展迅速的领域,涉及应用计算方法分析和解读生物数据。生物信息学的一项重要任务是识别新的药物-靶点相互作用(DTI),这也是药物发现过程的重要组成部分。大多数预测 DTI 的计算方法都将其视为一项二元分类任务,即预测药物靶标对之间是否存在相互作用。近年来,随着药物-靶点结合亲和力数据量的不断增加,这种二元分类任务可以转化为药物-靶点亲和力(DTA)的回归任务,DTA 反映了药物-靶点的结合程度,能提供比 DTI 更详细、更具体的信息,成为虚拟筛选药物发现的重要工具。有效预测化合物与靶点的相互作用有助于加快药物发现过程。在本研究中,我们利用卷积神经网络(CNN)和变压器架构的编码器模块,提出了一种名为 TC-DTA 的深度学习模型,用于预测 DTA。首先,从数据集中提取原始药物 SMILES 字符串和蛋白质氨基酸序列。然后使用不同的编码方法对其进行表示。然后,我们使用 CNN 和变换器的编码器模块分别从药物 SMILES 字符串和蛋白质氨基酸序列中提取特征信息。最后,将获得的特征信息串联起来并输入多层感知器,以预测结合亲和力得分。我们在戴维斯和 KIBA 这两个基准 DTA 数据集上评估了我们的模型,并与 KronRLS、SimBoost 和 DeepDTA 等方法进行了对比。在平均平方误差、一致性指数和 r2m 指数等评估指标上,TC-DTA 均优于这些基准方法。这些结果证明了 Transformer 编码器和 CNN 从序列中提取有意义表征的有效性,从而提高了 DTA 预测的准确性。用于 DTA 预测的深度学习模型可以通过识别与特定靶点具有高结合亲和力的候选药物来加速药物发现。与传统方法相比,使用机器学习技术可以实现更有效、更高效的药物发现过程。
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引用次数: 0
A2HTL: An Automated Hybrid Transformer-Based Learning for Predicting Survival of Esophageal Cancer Using CT Images A2HTL:利用CT图像预测食管癌存活率的基于混合变压器的自动学习方法
IF 3.7 4区 生物学 Q1 BIOCHEMICAL RESEARCH METHODS Pub Date : 2024-08-12 DOI: 10.1109/TNB.2024.3441533
Hailin Yue;Jin Liu;Lina Zhao;Hulin Kuang;Jianhong Cheng;Junjian Li;Mengshen He;Jie Gong;Jianxin Wang
Esophageal cancer is a common malignant tumor, precisely predicting survival of esophageal cancer is crucial for personalized treatment. However, current region of interest (ROI) based methodologies not only necessitate prior medical knowledge for tumor delineation, but may also cause the model to be overly sensitive to ROI. To address these challenges, we develop an automated Hybrid Transformer based learning that integrates a Hybrid Transformer size-aware U-Net with a ranked survival prediction network to enable automatic survival prediction for esophageal cancer. Specifically, we first incorporate the Transformer with shifted windowing multi-head self-attention mechanism (SW-MSA) into the base of the U-Net encoder to capture the long-range dependency in CT images. Furthermore, to alleviate the imbalance between the ROI and the background in CT images, we devise a size-aware coefficient for the segmentation loss. Finally, we also design a ranked pair sorting loss to more comprehensively capture the ranked information inherent in CT images. We evaluate our proposed method on a dataset comprising 759 samples with esophageal cancer. Experimental results demonstrate the superior performance of our proposed method in survival prediction, even without ROI ground truth.
食管癌是一种常见的恶性肿瘤,精确预测食管癌的生存率对个性化治疗至关重要。然而,目前基于兴趣区域(ROI)的方法不仅需要事先掌握肿瘤划分的医学知识,还可能导致模型对 ROI 过度敏感。为了应对这些挑战,我们开发了一种基于混合变形器的自动学习方法,它将混合变形器尺寸感知 U-Net 与排序生存预测网络整合在一起,实现了食管癌的自动生存预测。具体来说,我们首先在 UNet 编码器的基础上加入了带有移位窗口多头自关注机制(SW-MSA)的变换器,以捕捉 CT 图像中的长程依赖性。此外,为了缓解 CT 图像中 ROI 与背景之间的不平衡,我们设计了一个尺寸感知系数来计算分割损失。最后,我们还设计了排序对排序损失,以更全面地捕捉 CT 图像中固有的排序信息。我们在由 759 个食道癌样本组成的数据集上评估了我们提出的方法。实验结果表明,即使在没有 ROI 地面实况的情况下,我们提出的方法在生存预测方面也表现出色。
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引用次数: 0
Influence of Red Blood Cells on Channel Characterization in Cylindrical Vasculature. 红细胞对圆柱形血管中通道特性的影响
IF 3.7 4区 生物学 Q1 BIOCHEMICAL RESEARCH METHODS Pub Date : 2024-08-07 DOI: 10.1109/TNB.2024.3436022
Kathan S Joshi, Dhaval K Patel, Shivam Thakker, Miguel Lopez-Benitez, Janne J Lehtomaki

Molecular communication via diffusion (MCvD) expects Brownian motions of the information molecules to transmit information. However, the signal propagation largely depends on the geometric characteristics of the assumed flow model, i.e., the characteristics of the environment, design, and position of the transmitter and receiver, respectively. These characteristics are assumed to be lucid in many ways by either consideration of one-dimensional diffusion, unbounded environment, or constant drift. In reality, diffusion often occurs in blood-vessel-like channels. To this aim, we try to study the effect of the biological environment on channel performance. The Red-Blood Cells (RBCs) found in blood vessels enforces a higher concentration of molecules towards the vessel walls, leading to better reception. Therefore, in this paper we derive an analytical expression of Channel Impulse Response (CIR) for a dispersion-advection-based regime, contemplating the influence of RBCs in the model and considering a point source transmitter and a realistic design of the receiver.

通过扩散进行的分子通讯(MCvD)希望通过信息分子的布朗运动来传输信息。然而,信号传播在很大程度上取决于假定流动模型的几何特征,即环境特征、设计以及发射器和接收器的位置。通过考虑一维扩散、无边界环境或恒定漂移等多种方式,这些特征被假定为是清晰的。实际上,扩散通常发生在类似血管的通道中。为此,我们尝试研究生物环境对通道性能的影响。血管中的红血细胞(RBC)会使分子向血管壁集中,从而导致更好的接收效果。因此,在本文中,我们推导出了基于色散-平流机制的信道脉冲响应(CIR)的分析表达式,在模型中考虑了红血细胞的影响,并考虑了点源发射器和接收器的实际设计。
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引用次数: 0
Deep Learning for the Accurate Prediction of Triggered Drug Delivery. 深度学习用于触发式给药的精确预测
IF 3.7 4区 生物学 Q1 BIOCHEMICAL RESEARCH METHODS Pub Date : 2024-07-17 DOI: 10.1109/TNB.2024.3426291
Ghaleb A Husseini, Rana Sabouni, Vladimir Puzyrev, Mehdi Ghommem

The need to mitigate the adverse effects of chemotherapy has driven the exploration of innovative drug delivery approaches. One emerging trend in cancer treatment is the utilization of Drug Delivery Systems (DDSs), facilitated by nanotechnology. Nanoparticles, ranging from 1 nm to 1000 nm, act as carriers for chemotherapeutic agents, enabling precise drug delivery. The triggered release of these agents is vital for advancing this novel drug delivery system. Our research investigated this multifaceted delivery capability using liposomes and metal organic frameworks as nanocarriers and utilizing all three targeting techniques: passive, active, and triggered. Liposomes are modified using targeting ligands to render them more targeted toward certain cancers. Moieties are conjugated to the surfaces of these nanocarriers to allow for their binding to receptors overexpressed on cancer cells, thus increasing the accumulation of the agent at the tumor site. A novel class of nanocarriers, namely metal organic frameworks, has emerged, showing promise in cancer treatment. Triggering techniques (both intrinsic and extrinsic) can be used to release therapeutic agents from nanoparticles, thus enhancing the efficacy of drug delivery. In this study, we develop a predictive model combining experimental measurements with deep learning techniques. The model accurately predicts drug release from liposomes and MOFs under various conditions, including low- and high-frequency ultrasound (extrinsic triggering), microwave exposure (extrinsic triggering), ultraviolet light exposure (extrinsic triggering), and different pH levels (intrinsic triggering). The deep learning-based predictions significantly outperform linear predictions, proving the utility of advanced computational methods in drug delivery. Our findings demonstrate the potential of these nanocarriers and highlight the efficacy of deep learning models in predicting drug release behavior, paving the way for enhanced cancer treatment strategies.

减轻化疗不良反应的需求推动了对创新给药方法的探索。癌症治疗的一个新趋势是利用纳米技术的药物输送系统(DDS)。从 1 纳米到 1000 纳米的纳米颗粒可作为化疗药物的载体,实现精确给药。这些药物的触发释放对于推进这种新型给药系统至关重要。我们的研究使用脂质体和金属有机框架作为纳米载体,并利用被动、主动和触发三种靶向技术,对这种多方面的给药能力进行了研究。利用靶向配体对脂质体进行修饰,使其对某些癌症更具靶向性。在这些纳米载体的表面共轭一些配体,使其能够与癌细胞上过度表达的受体结合,从而增加药剂在肿瘤部位的积累。一种新型的纳米载体,即金属有机框架,已经出现,并在癌症治疗中大有可为。触发技术(内在和外在)可用于从纳米颗粒中释放治疗药物,从而提高给药效果。在本研究中,我们结合实验测量和深度学习技术开发了一个预测模型。该模型能准确预测脂质体和 MOFs 在各种条件下的药物释放,包括低频和高频超声(外触发)、微波照射(外触发)、紫外线照射(外触发)和不同 pH 值(内触发)。基于深度学习的预测结果明显优于线性预测结果,证明了先进计算方法在药物输送方面的实用性。我们的研究结果证明了这些纳米载体的潜力,并突出了深度学习模型在预测药物释放行为方面的功效,为增强癌症治疗策略铺平了道路。
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引用次数: 0
High-Risk Sequence Prediction Model in DNA Storage: The LQSF Method. DNA 储存中的高风险序列预测模型:LQSF 方法
IF 3.7 4区 生物学 Q1 BIOCHEMICAL RESEARCH METHODS Pub Date : 2024-07-08 DOI: 10.1109/TNB.2024.3424576
Yitong Ma, Shuai Chen, Xu Qi, Zuhong Lu, Kun Bi

Traditional DNA storage technologies rely on passive filtering methods for error correction during synthesis and sequencing, which result in redundancy and inadequate error correction. Addressing this, the Low Quality Sequence Filter (LQSF) was introduced, an innovative method employing deep learning models to predict high-risk sequences. The LQSF approach leverages a classification model trained on error-prone sequences, enabling efficient pre-sequencing filtration of low-quality sequences and reducing time and resources in subsequent stages. Analysis has demonstrated a clear distinction between high and low-quality sequences, confirming the efficacy of the LQSF method. Extensive training and testing were conducted across various neural networks and test sets. The results showed all models achieving an AUC value above 0.91 on ROC curves and over 0.95 on PR curves across different datasets. Notably, models such as Alexnet, VGG16, and VGG19 achieved a perfect AUC of 1.0 on the Original dataset, highlighting their precision in classification. Further validation using Illumina sequencing data substantiated a strong correlation between model scores and sequence error-proneness, emphasizing the model's applicability. The LQSF method marks a significant advancement in DNA storage technology, introducing active sequence filtering at the encoding stage. This pioneering approach holds substantial promise for future DNA storage research and applications.

传统的 DNA 存储技术依赖被动过滤方法在合成和测序过程中进行纠错,这导致了冗余和不充分的纠错。针对这一问题,推出了低质量序列过滤器(LQSF),这是一种采用深度学习模型预测高风险序列的创新方法。LQSF 方法利用在易出错序列上训练的分类模型,实现了对低质量序列的高效预序列过滤,减少了后续阶段的时间和资源。分析表明,高质量和低质量序列之间有明显的区别,证实了 LQSF 方法的有效性。对各种神经网络和测试集进行了广泛的训练和测试。结果显示,在不同数据集上,所有模型的 ROC 曲线 AUC 值均超过 0.91,PR 曲线 AUC 值均超过 0.95。值得注意的是,Alexnet、VGG16 和 VGG19 等模型在原始数据集上的 AUC 值达到了完美的 1.0,突出了它们的分类精度。使用 Illumina 测序数据进行的进一步验证证实了模型得分与序列错误率之间的强相关性,强调了模型的适用性。LQSF 方法标志着 DNA 储存技术的重大进步,它在编码阶段引入了主动序列过滤技术。这种开创性的方法为未来的 DNA 存储研究和应用带来了巨大的希望。
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引用次数: 0
3D Printed Interdigitated Electrodes for Cardiac Biomarker Detection. 用于心脏生物标记检测的三维打印交织电极
IF 3.7 4区 生物学 Q1 BIOCHEMICAL RESEARCH METHODS Pub Date : 2024-07-04 DOI: 10.1109/TNB.2024.3423020
Parvathy Nair, Khairunnisa Amreen, R N Ponnalagu, Sanket Goel

The identification of biomarkers has significant benefits for early disease diagnosis and treatment. Hence, there is an increasing demand for low-cost, disposable point-of-care diagnostic devices for rapid and specific biomarker detection, with good sensitivity and range. Interdigitated electrodes (IDEs) are among the most widely used transducers, especially in chemical and biological sensors, because of their high sensitivity, low cost, and straightforward manufacturing procedure. In this work, a simple 3D printed IDE structure has been developed for cardiac troponin I detection to indicate the risk of acute myocardial infarction (AMI). IDEs have been fabricated using 3D printing technique and the electrically conductive composite polylactic acid (PLA) filament being utilized for the fabrication of electrodes. The demonstrated cardiac troponin I sensor has a calculated quantification limit and detection limit of 0.233 ng ml-1 and 76.97 pg ml-1, respectively which are clinically significant ranges for AMI identification. Electrochemical analytical techniques, such as electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV), were carried out for the detection of analyte concentration. Furthermore, using this fabrication methodology IDEs can be fabricated for under US$ 0.4 which can be utilized to detect several other biomarkers.

生物标记物的鉴定对疾病的早期诊断和治疗有重大好处。因此,对快速、特异、灵敏度高、范围广的生物标记物检测所需的低成本、一次性护理点诊断设备的需求与日俱增。插入式电极(IDE)因其灵敏度高、成本低和制造过程简单而成为应用最广泛的传感器之一,尤其是在化学和生物传感器中。在这项工作中,开发了一种简单的三维打印 IDE 结构,用于检测心肌肌钙蛋白 I,以提示急性心肌梗死(AMI)的风险。IDE 采用三维打印技术制造,电极的制造使用了导电复合材料聚乳酸(PLA)长丝。经计算,该心肌肌钙蛋白 I 传感器的定量限和检测限分别为 0.233 纳克/毫升-1 和 76.97 皮克/毫升-1,这两个数值对于急性心肌梗死的鉴定具有重要的临床意义。为检测分析物浓度,还采用了电化学阻抗光谱法(EIS)和循环伏安法(CV)等电化学分析技术。此外,利用这种制造方法可以制造出 IDE,价格低于 0.4 美元,可用于检测其他几种生物标记物。
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引用次数: 0
A Thermal Study of Terahertz Induced Protein Interactions. 太赫兹诱导蛋白质相互作用的热学研究
IF 3.7 4区 生物学 Q1 BIOCHEMICAL RESEARCH METHODS Pub Date : 2024-07-02 DOI: 10.1109/TNB.2024.3422280
Hadeel Elayan, Samar Elmaadawy, Andrew W Eckford, Raviraj Adve, Josep Jornet

Proteins can be regarded as thermal nanosensors in an intra-body network. Upon being stimulated by Terahertz (THz) frequencies that match their vibrational modes, protein molecules experience resonant absorption and dissipate their energy as heat, undergoing a thermal process. This paper aims to analyze the effect of THz signaling on the protein heat dissipation mechanism. We therefore deploy a mathematical framework based on the heat diffusion model to characterize how proteins absorb THz-electromagnetic (EM) energy from the stimulating EM fields and subsequently release this energy as heat to their immediate surroundings. We also conduct a parametric study to explain the impact of the signal power, pulse duration, and inter-particle distance on the protein thermal analysis. In addition, we demonstrate the relationship between the change in temperature and the opening probability of thermally-gated ion channels. Our results indicate that a controlled temperature change can be achieved in an intra-body environment by exciting protein particles at their resonant frequencies. We further verify our results numerically using COMSOL Multiphysics® and introduce an experimental framework that assesses the effects of THz radiation on protein particles. We conclude that under controlled heating, protein molecules can serve as hotspots that impact thermally-gated ion channels. Through the presented work, we infer that the heating process can be engineered on different time and length scales by controlling the THz-EM signal input.

蛋白质可被视为体内网络中的热纳米传感器。当受到与其振动模式相匹配的太赫兹(THz)频率刺激时,蛋白质分子会发生共振吸收,并将能量以热量的形式耗散,从而经历一个热过程。本文旨在分析太赫兹信号对蛋白质散热机制的影响。因此,我们采用了一个基于热扩散模型的数学框架,来描述蛋白质如何从刺激电磁场中吸收太赫兹电磁(EM)能量,并随后将这些能量以热量的形式释放到其周围环境中。我们还进行了参数研究,以解释信号功率、脉冲持续时间和粒子间距离对蛋白质热分析的影响。此外,我们还证明了温度变化与热门控离子通道开启概率之间的关系。我们的研究结果表明,在体内环境中,通过激发蛋白质粒子的共振频率,可以实现可控的温度变化。我们使用 COMSOL Multiphysics® 进一步对结果进行了数值验证,并引入了一个实验框架来评估太赫兹辐射对蛋白质颗粒的影响。我们的结论是,在受控加热条件下,蛋白质分子可作为热点影响热门控离子通道。通过所介绍的工作,我们推断出可以通过控制太赫兹电磁信号输入,在不同的时间和长度尺度上设计加热过程。
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引用次数: 0
IEEE Transactions on NanoBioscience Information for Authors 电气和电子工程师学会《纳米生物科学学报》为作者提供的信息
IF 3.7 4区 生物学 Q1 BIOCHEMICAL RESEARCH METHODS Pub Date : 2024-07-01 DOI: 10.1109/TNB.2024.3415195
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引用次数: 0
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