arXiv Machine Learning

Leveraging Cell-level Spatial Transcriptomics as Weak Supervision for Nuclei Classification

The paper proposes a scalable framework that uses cell-level spatial transcriptomics (ST) as weak supervision for nuclei classification in histopathology images. By converting gene expression profiles into cell-type labels and leveraging nucleus masks from ST data, the method automatically generates image-label pairs without manual annotation. Evaluations on unseen tissues show that this approach achieves segmentation and classification performance comparable to conventional supervised methods while requiring fewer manually annotated datasets.

arXiv Machine Learning
Oct 28

Biology-Guided Context-Aware Residual Propagation for Spatial Gene Expression Prediction from Histology

The paper introduces BCARP, a Biology‑Guided Context‑Aware Residual Propagation framework that predicts spatial gene expression from H&E‑stained histology images. Rather than directly decoding expression from visual features, BCARP treats histology embeddings as morphological priors and iteratively refines spot representations in a transcriptomics‑oriented latent space, integrating nuclei‑guided local context and prototype‑guided global propagation. Evaluations on three spatial transcriptomics datasets and ten HEST‑1k cohorts show that BCARP outperforms existing baselines in mean correlation‑based metrics, demonstrating the effectiveness of biology‑guided local‑global residual propagation for histology‑to‑transcriptomics prediction.

By Vu Van An, Long D. Nguyen, Ho Viet Duc Luong, Binh P. Nguyen
arXiv AI
Oct 1

GATE-ST: Gene-Aware Text-image Encoder for Spatial Transcriptomics

GATE-ST is a gene-aware text-image encoder that enhances spatial transcriptomics predictions by integrating gene descriptions into image-based models. The method encodes gene summaries with a text encoder and fuses these embeddings with image features via cross‑attention, aligning them with morphological cues. Benchmarks show GATE‑ST outperforms random gene embeddings and other image‑text fusion architectures, indicating its potential to improve accuracy while reducing time and cost in spatial gene expression analysis.

By Lucas Ni, Jian Luo, Wentao Huang, Chao Chen