用多模态模型打通组织空间蛋白、病理图像与临床数据的关联
Linking spatial biology and clinical histology via Haiku

- 构建三模态对比学习模型,对齐空间蛋白、H&E图像和临床信息
- 在生存预测上提升7.91%相对性能,零样本生物标志物推断相关性达0.718
- 可生成反事实分析,揭示肿瘤进展中的分子变化模式,适合临床研究者
整合分子、形态和临床数据对基础与转化医学研究至关重要,但系统性联合建模框架仍有限。我们提出Haiku,一个基于多重免疫荧光(mIF)训练的三模态对比学习模型。其包含来自1,606名患者、11个器官类型的3,218张组织切片的2670万块空间蛋白组学图像,并对齐了匹配的H&E病理图像与临床元数据至共享嵌入空间。Haiku实现三向跨模态检索,在下游分类与临床预测任务中优于单模态基线,支持仅凭临床文本描述进行零样本生物标志物推断。在各项任务中,其跨模态检索(Recall@50最高达0.611,基线接近零)、生存预测(C-index 0.737,相对提升7.91%)及零样本推断(52个生物标志物平均皮尔逊相关系数0.718)均表现优异。此外,我们引入反事实预测框架,固定组织形态仅修改临床信息,揭示乳腺癌分期进展与肺癌生存相关的器官特异性分子变化。在肺腺癌案例中,反事实分析识别出CD8与颗粒酶B升高、PD-L1和Ki67降低的特征,与良好预后报道一致。这些结果为探索性假设生成,而非机制性声明。
原文摘要 · Abstract (English)
Integrating molecular, morphological, and clinical data is essential for basic and translational biomedical research, yet systematic frameworks for jointly modeling these modalities remain limited. Here we present Haiku, a tri-modal contrastive learning model trained on multiplexed immunofluorescence (mIF). It comprises 26.7 million spatial proteomics patches from 3,218 tissue sections across 1,606 patients spanning 11 organ types, with matched hematoxylin and eosin (H&E) histology and clinical metadata aligned in a shared embedding space. Haiku enables three-way cross-modal retrieval, improves downstream classification and clinical prediction tasks over unimodal baselines, and supports zero-shot biomarker inference through fusion retrieval conditioned on clinical metadata-only text descriptions. Across tasks, Haiku outperforms competing approaches, achieving cross-modal retrieval (Recall@50 up to 0.611 versus near-zero baseline), survival prediction (C-index 0.737, +7.91% relative improvement), and zero-shot biomarker inference (mean Pearson correlation 0.718 across 52 biomarkers). Furthermore, we introduce a counterfactual prediction framework in which modifying only clinical metadata while fixing tissue morphology surfaces niche-specific molecular shifts associated with breast cancer stage progression and lung cancer survival outcomes. In a lung adenocarcinoma case study, the counterfactual analysis recovers niche-specific shifts characterized by increased CD8 and granzyme B, reduced PD-L1, and decreased Ki67, broadly consistent with patterns reported for favorable outcomes. We present these counterfactual results as exploratory, hypothesis-generating signals rather than mechanistic claims. These capabilities demonstrate that tri-modal alignment via Haiku enables integrative analysis of spatial biology, bridging molecular measurements with clinical context for biological exploration.
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