Publications by authors named "ChunHou Zheng"

Cell type annotation is a critical step in analyzing single-cell RNA sequencing (scRNA-seq) data. A large number of deep learning (DL)-based methods have been proposed to annotate cell types of scRNA-seq data and have achieved impressive results. However, there are several limitations to these methods.

View Article and Find Full Text PDF
Article Synopsis
  • Peptide detectability is key in understanding protein composition and how well peptides can be identified in samples, affecting proteomics analyses.
  • Current methods are limited by using only one type of data representation, which doesn't capture the complexity of peptides.
  • DeepPD, a new deep learning framework that integrates multiple data features and uses the information bottleneck principle, significantly improves peptide detectability predictions and shows strong performance across various datasets.
View Article and Find Full Text PDF

The acurate segmentation and classification of nuclei in histological images are crucial for the diagnosis and treatment of colorectal cancer. However, the aggregation of nuclei and intra-class variability in histology images present significant challenges for nuclei segmentation and classification. In addition, the imbalance of various nuclei classes exacerbates the difficulty of nuclei classification and segmentation using deep learning models.

View Article and Find Full Text PDF

In recent years, numerous studies have highlighted the pivotal importance of miRNAs in personalized healthcare, showcasing broad application prospects. miRNAs hold significant potential in disease diagnosis, prognosis assessment, and therapeutic target discovery, making them an integral part of precision medicine. They are expected to enable precise disease subtyping and risk prediction, thereby advancing the development of precision medicine.

View Article and Find Full Text PDF

The development of peptide drug is hindered by the risk of amyloidogenic aggregation; if peptides tend to aggregate in this manner, they may be unsuitable for drug design. Computational methods aimed at predicting amyloidogenic sequences often face challenges in extracting high-quality features, and their predictive performance can be enchanced. To surmount these challenges, iAmyP was introduced as a specialized computational tool designed for predicting amyloidogenic hexapeptides.

View Article and Find Full Text PDF
Article Synopsis
  • The gene regulatory network (GRN) is crucial for understanding cellular systems and disease mechanisms, and recent deep learning methods have shown promise in inferring GRNs from single-cell transcriptomic data.
  • A new model, scMGATGRN, has been developed using a multiview graph attention network that integrates local and high-order neighbor information, enhancing the process of inferring GRNs.
  • Comparative experiments revealed that scMGATGRN outperforms ten other methods across various datasets, confirming its effectiveness, and the code is available on GitHub for public use.
View Article and Find Full Text PDF

Recent advancements in spatially transcriptomics (ST) technologies have enabled the comprehensive measurement of gene expression profiles while preserving the spatial information of cells. Combining gene expression profiles and spatial information has been the most commonly used method to identify spatial functional domains and genes. However, most existing spatial domain decipherer methods are more focused on spatially neighboring structures and fail to take into account balancing the self-characteristics and the spatial structure dependency of spots.

View Article and Find Full Text PDF
Article Synopsis
  • The development of single-cell RNA sequencing (scRNA-seq) technology allows researchers to analyze biological processes at the cellular level, focusing on tasks like cell type identification through unsupervised clustering.
  • Despite numerous clustering methods existing, many fail to fully leverage the relationships between cells, leading to less effective clustering outcomes.
  • The proposed scGAMF framework integrates graph autoencoder-based analysis with a multi-level kernel space to improve clustering accuracy by utilizing multiple feature sets and a consensus affinity matrix, demonstrating superior performance in real dataset validations compared to other methods.
View Article and Find Full Text PDF
Article Synopsis
  • Recent advancements in single-cell RNA sequencing (scRNA-seq) now allow for detailed cell characterization, but traditional analysis methods struggle with the data's high dimensions and sparsity.
  • A new framework called MSVGAE, based on variational graph auto-encoders and graph attention networks, is proposed to effectively analyze scRNA-seq data by learning features across different scales and managing uninformative elements.
  • Experimental results from 24 simulated datasets and 8 real-world datasets show that MSVGAE excels in clustering, visualization, and marker gene analysis, demonstrating high accuracy and robustness with sparse data.
View Article and Find Full Text PDF
Article Synopsis
  • Circular RNAs (circRNAs) are important for gene expression, and identifying how they interact with RNA-binding proteins (RBPs) is crucial in biology.
  • Traditional deep learning methods struggle with capturing long-range interactions and utilizing multiple features effectively.
  • The new model, iCRBP-LKHA, uses advanced techniques to improve the identification of circRNA-RBP interactions, outperforming existing methods in various datasets and showing promise for other RNA interactions.
View Article and Find Full Text PDF
Article Synopsis
  • Scientific evidence underscores the importance of miRNA-disease association research for understanding diseases and creating new diagnostics, with bioinformatics focusing on identifying these associations.
  • Advancements in graph neural networks (GNNs) have improved methodologies in this area, although existing methods face challenges with data noise and integrating information.
  • The proposed HGTMDA framework uses random walk with restart-based association masking and an enhanced GCN-Transformer model to effectively identify miRNA-disease associations, demonstrating superior performance in real-world applications, particularly in cancer studies.
View Article and Find Full Text PDF

Since genomics was proposed, the exploration of genes has been the focus of research. The emergence of single-cell RNA sequencing (scRNA-seq) technology makes it possible to explore gene expression at the single-cell level. Due to the limitations of sequencing technology, the data contains a lot of noise.

View Article and Find Full Text PDF

Motivation: In drug development process, a significant portion of budget and research time are dedicated to the lead compound optimization procedure in order to identify potential drugs. This procedure focuses on enhancing the pharmacological and bioactive properties of compounds by optimizing their local substructures. However, due to the vast and discrete chemical structure space and the unpredictable element combinations within this space, the optimization process is inherently complex.

View Article and Find Full Text PDF

Gene regulatory networks (GRNs) are crucial for understanding organismal molecular mechanisms and processes. Construction of GRN in the epithelioma papulosum cyprini (EPC) cells of cyprinid fish by spring viremia of carp virus (SVCV) infection helps understand the immune regulatory mechanisms that enhance the survival capabilities of cyprinid fish. Although many computational methods have been used to infer GRNs, specialized approaches for predicting the GRN of EPC cells following SVCV infection are lacking.

View Article and Find Full Text PDF
Article Synopsis
  • Researchers have been focusing on predicting synergistic drug combinations for cancer treatment using computational models, but many models overlook important interactions between drug pairs and cell lines.
  • To address this limitation, a new multi-modal deep learning framework called MDNNSyn has been developed, utilizing multi-source information and features for predicting drug synergy.
  • When tested against other prediction methods on two datasets, MDNNSyn showed significant improvements in performance, achieving high AUC scores and successfully identifying potential synergistic drug combinations.
View Article and Find Full Text PDF

Inferring gene regulatory network (GRN) is one of the important challenges in systems biology, and many outstanding computational methods have been proposed; however there remains some challenges especially in real datasets. In this study, we propose Directed Graph Convolutional neural network-based method for GRN inference (DGCGRN). To better understand and process the directed graph structure data of GRN, a directed graph convolutional neural network is conducted which retains the structural information of the directed graph while also making full use of neighbor node features.

View Article and Find Full Text PDF

Optimization techniques play a pivotal role in advancing drug development, serving as the foundation of numerous generative methods tailored to efficiently design optimized molecules derived from existing lead compounds. However, existing methods often encounter difficulties in generating diverse, novel, and high-property molecules that simultaneously optimize multiple drug properties. To overcome this bottleneck, we propose a multiobjective molecule optimization framework (MOMO).

View Article and Find Full Text PDF

Recent advancements in spatial transcriptomics (ST) technologies offer unprecedented opportunities to unveil the spatial heterogeneity of gene expression and cell states within tissues. Despite these capabilities of the ST data, accurately dissecting spatiotemporal structures (e.g.

View Article and Find Full Text PDF

Recent methods often introduce attention mechanisms into the skip connections of U-shaped networks to capture features. However, these methods usually overlook spatial information extraction in skip connections and exhibit inefficiency in capturing spatial and channel information. This issue prompts us to reevaluate the design of the skip-connection mechanism and propose a new deep-learning network called the Fusing Spatial and Channel Attention Network, abbreviated as FSCA-Net.

View Article and Find Full Text PDF

Single-cell RNA sequencing (scRNA-seq) is a potent advancement for analyzing gene expression at the individual cell level, allowing for the identification of cellular heterogeneity and subpopulations. However, it suffers from technical limitations that result in sparse and heterogeneous data. Here, we propose scVSC, an unsupervised clustering algorithm built on deep representation neural networks.

View Article and Find Full Text PDF

Computer-aided diagnosis (CAD) plays a crucial role in the clinical application of Alzheimer's disease (AD). In particular, convolutional neural network (CNN)-based methods are highly sensitive to subtle changes caused by brain atrophy in medical images (e.g.

View Article and Find Full Text PDF

Background And Objective: Interleukin-6 (IL-6) is the critical factor of early warning, monitoring, and prognosis in the inflammatory storm of COVID-19 cases. IL-6 inducing peptides, which can induce cytokine IL-6 production, are very important for the development of diagnosis and immunotherapy. Although the existing methods have some success in predicting IL-6 inducing peptides, there is still room for improvement in the performance of these models in practical application.

View Article and Find Full Text PDF

Exploration of the intricate connections between long noncoding RNA (lncRNA) and diseases, referred to as lncRNA-disease associations (LDAs), plays a pivotal and indispensable role in unraveling the underlying molecular mechanisms of diseases and devising practical treatment approaches. It is imperative to employ computational methods for predicting lncRNA-disease associations to circumvent the need for superfluous experimental endeavors. Graph-based learning models have gained substantial popularity in predicting these associations, primarily because of their capacity to leverage node attributes and relationships within the network.

View Article and Find Full Text PDF

The inference of gene regulatory networks (GRNs) from gene expression profiles has been a key issue in systems biology, prompting many researchers to develop diverse computational methods. However, most of these methods do not reconstruct directed GRNs with regulatory types because of the lack of benchmark datasets or defects in the computational methods. Here, we collect benchmark datasets and propose a deep learning-based model, DeepFGRN, for reconstructing fine gene regulatory networks (FGRNs) with both regulation types and directions.

View Article and Find Full Text PDF
Article Synopsis
  • Alzheimer's disease (AD) is complex and difficult to treat, but analyzing varied data types can help in early diagnosis by understanding AD progression.* -
  • The proposed deep self-reconstruction fusion similarity hashing (DS-FSH) method enhances the identification of AD-related biomarkers through multi-modal data analysis and utilizes a deep self-reconstruction model for better data relationships.* -
  • Experiments show DS-FSH performs better than existing classification methods, helping to uncover crucial features related to AD and potentially improving our understanding of its pathogenesis.*
View Article and Find Full Text PDF