Publications by authors named "Zhenao Wu"

The rapid advancement of spatial transcriptomics (ST) sequencing technology has made it possible to capture gene expression with spatial coordinate information at the cellular level. Although many methods in ST data analysis can detect spatially variable genes (SVGs), these methods often fail to identify genes with explicit spatial expression patterns due to the lack of consideration for spatial domains. Considering spatial domains is crucial for identifying SVGs as it focuses the analysis of gene expression changes on biologically relevant regions, aiding in the more accurate identification of SVGs associated with specific cell types.

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Article Synopsis
  • - Cell-cell communication is essential for normal biological functions, development, and immune responses, and advancements in single-cell RNA sequencing and spatial transcriptomics have enhanced analysis in this area, despite challenges like incomplete data.
  • - Current methods often overlook communication across different tissue layers and don’t fully capture the complexity of three-dimensional tissues.
  • - To overcome these limitations, the study introduces VGAE-CCI, a deep learning framework that accurately identifies cell-cell communication in complex tissues, exhibiting superior performance compared to existing methods across several datasets.
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Motivation: Cell clustering is foundational for analyzing the heterogeneity of biological tissues using single-cell sequencing data. With the maturation of single-cell multi-omics sequencing technologies, we can integrate multiple omics data to perform cell clustering, thereby overcoming the limitations of insufficient information from single omics data. Existing methods for cell clustering often only consider the differences in data patterns during the analysis of multi-omics data, but the dependencies between omics features of different cell types also significantly influence cell clustering.

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Single-cell RNA sequencing (scRNA-seq) is widely used to interpret cellular states, detect cell subpopulations, and study disease mechanisms. In scRNA-seq data analysis, cell clustering is a key step that can identify cell types. However, scRNA-seq data are characterized by high dimensionality and significant sparsity, presenting considerable challenges for clustering.

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In the growth and development of multicellular organisms, the immune processes of the immune system and the maintenance of the organism's internal environment, cell communication plays a crucial role. It exerts a significant influence on regulating internal cellular states such as gene expression and cell functionality. Currently, the mainstream methods for studying intercellular communication are focused on exploring the ligand-receptor-transcription factor and ligand-receptor-subunit scales.

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Article Synopsis
  • Tumors are complex and diverse, making it hard to study how cancer cells interact with each other and their environment; researchers are using new techniques like spatial transcriptomics and single-cell sequencing to better understand these systems.
  • Traditional methods for analyzing gene expression in cancer often miss important differences between cell types, as they focus mainly on statistical methods that can overlook significant variations.
  • The proposed GTADC method enhances gene selection accuracy using graph-based deep learning, improving the understanding of spatial relationships in cancer tissues and potentially aiding early cancer detection and diagnosis.
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