跨批次单细胞空间组学数据多粒度聚类方法及系统

By employing a triplet alignment method based on a dual-path parallel graph encoder and online pseudo-label generation, the bottlenecks of multi-scale clustering and cross-batch integration in existing spatial omics methods are overcome. This enables self-driven discovery and robust integration of multi-granularity cellular and tissue structures, improving the reliability of cellular heterogeneity characterization and data integration.

CN122135793BActive Publication Date: 2026-07-17SHANDONG UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV
Filing Date
2026-05-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing spatial omics methods cannot simultaneously reveal macroscopic organizational structure and fine-grained cellular niches in cluster analysis, and fine-grained information is lost during cross-batch integration, resulting in excessive smoothing of biologically significant cellular heterogeneity.

Method used

A dual-path parallel graph encoder is used to model molecular expression and spatial structure separately. Combined with online pseudo-label generation and spatial topology-aware triplet alignment, unsupervised discovery and robust cross-batch integration of multi-granularity cellular tissue structures are achieved.

Benefits of technology

Without external annotation, we achieved multi-scale clustering discovery from coarse-grained tissue domains to fine-grained cellular niches, preserving fine-grained biological heterogeneity within samples and improving the accuracy of cellular heterogeneity characterization and the reliability of cross-batch data integration.

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Abstract

本发明属于空间组学数据分析技术领域,尤其涉及跨批次单细胞空间组学数据多粒度聚类方法及系统。包括获取空间组学原始数据,构建空间邻域图与分子特征相似图;构建双路并行图编码器,对分子特征相似图和空间邻域图进行独立建模,得到两个模态特异的细胞图嵌入,并将细胞图嵌入融合为统一的联合嵌入;逐步细化联合嵌入的几何结构,实现多粒度细胞组织结构的自驱动发现;基于两个模态特异的细胞图嵌入和细化后的联合嵌入,得到包括细胞类型划分、空间域划分和细胞生态位划分的多层次聚类结果。本发明将分子表达与空间结构两类生物学信号分别建模后融合,克服了单视图方法在刻画细胞异质性方面的局限性。
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