Enabling Automated and Reproducible Spatially Resolved Transcriptomics at Scale

Spatial information of tissues is an essential component to reach a holistic overview of gene expression mecha-nisms. The sequencing-based Spatial transcriptomics approach allows to spatially barcode the whole tran-scriptome of tissue sections using microarray glass slides. However, manual preparation of high-quality tissue sequencing libraries is time-consuming and subjected to technical variability. Here, we present an automated adaptation of the 10x Genomics Visium library construction on the widely used Agilent Bravo Liquid Handling Platform. Compared to the manual Visium library preparation, our automated approach reduces hands-on time by over 80% and provides higher throughput and robustness. Our automated Visium library preparation protocol provides a new strategy to standardize spatially resolved transcriptomics analysis of tissues at scale.