Profiling MicroRNAs with Associated Spatial Dynamics in Acute Tissue Slices.

Journal Article (Journal Article)

MicroRNAs (miRNAs) are suggested to play important roles in the pathogenesis and progress of human diseases with heterogeneous regulation in different types of cells. However, limited technique is available for profiling miRNAs with both expression and spatial dynamics. Here, we describe a platform for multiplexed in situ miRNA profiling in acute tissue slices. The technique uses diamond nanoneedles functionalized with RNA-binding proteins to directly isolate targeted miRNAs from the cytosol of a large population of cells to achieve a quasi-single-cell analysis for a tissue sample. In addition to a quantitative evaluation of the expression level of particular miRNAs, the technique also provides the relative spatial dynamics of the cellular miRNAs in associated cell populations, which was demonstrated to be useful in analyzing the susceptibility and spatial reorganization of different types of cells in the tissues from normal or diseased animals. As a proof-of-concept, in MK-801-induced schizophrenia model, we found that astrocytes, instead of neurons, are more heterogeneously affected in the hippocampus of rats that underwent repeated injection of MK-801, showing an expression fingerprint related to differentially down-regulated miRNA-135a and miRNA-143; the associated astrocyte subpopulation is also more spatially dispersed in the hippocampus, suggesting an astrocyte dysregulation in the induced schizophrenia animals.

Full Text

Duke Authors

Cited Authors

  • Xie, K; Wang, Z; Qi, L; Zhao, X; Wang, Y; Qu, J; Xu, P; Huang, L; Zhang, W; Yang, Y; Wang, X; Shi, P

Published Date

  • March 2021

Published In

Volume / Issue

  • 15 / 3

Start / End Page

  • 4881 - 4892

PubMed ID

  • 33719400

Electronic International Standard Serial Number (EISSN)

  • 1936-086X

International Standard Serial Number (ISSN)

  • 1936-0851

Digital Object Identifier (DOI)

  • 10.1021/acsnano.0c09676

Language

  • eng