Polony gels enable amplifiable DNA stamping and spatial transcriptomics of chronic pain.

Polony gels enable amplifiable DNA stamping and spatial transcriptomics of chronic pain.
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DOI:
10.1016/j.cell.2022.10.021
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发表时间:
2022-11-23
期刊:
影响因子:
64.5
通讯作者:
Gu, Liangcai
Gu, Liangcai
中科院分区:
生物学1区
文献类型:
--
作者:
Fu, Xiaonan;Sun, Li;Dong, Runze;Chen, Jane Y.;Silakit, Runglawan;Condon, Logan F.;Lin, Yiing;Lin, Shin;Palmiter, Richard D.;Gu, Liangcai

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Methods for acquiring spatially resolved omics data from complex tissues use barcoded DNA arrays of low- to sub-micrometer features to achieve single-cell resolution. However, fabricating such arrays (randomly assembled beads, DNA nanoballs or clusters) requires sequencing barcodes in each array, limiting cost-effectiveness and throughput. Here, we describe a vastly scalable stamping method to fabricate polony gels, arrays of ~1-micrometer clonal DNA clusters bearing unique barcodes. By enabling repeatable enzymatic replication of barcode patterned gels, this method, compared with the sequencing-dependent array fabrication, reduced cost by at least 35-fold and time to approximately 7 hours. The gel stamping was implemented with a simple robotic arm and off-the-shelf reagents. We leveraged the resolution and RNA capture efficiency of polony gels to develop Pixel-seq, a single-cell spatial transcriptomic assay, and applied it to map the mouse parabrachial nucleus and analyze changes in neuropathic pain-regulated transcriptomes and cell-cell communication after nerve ligation. Polony gels, arrays of micron-scale DNA clusters bearing unique barcodes, enable repeatable, gel-to-gel array replication and in situ capture of tissue RNAs with high resolution and efficiency. Pixel-seq, a polony gel-based, single-cell spatial transcriptomic assay, reveals neuronal and glial heterogeneity and chronic pain-induced changes in the mouse parabrachial nucleus.
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