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Book chapter2023Peer reviewed

Isolation of Nuclei Tagged in Specific Cell Types (INTACT) in Arabidopsis

Benstein, R.M.; Schmid, M.; You, Y.


Many functionally distinct plant tissues have relatively low numbers of cells that are embedded within complex tissues. For example, the shoot apical meristem (SAM) consists of a small population of pluripotent stem cells surrounded by developing leaves and/or flowers at the growing tip of the plant. It is technically challenging to collect enough high-quality SAM samples for molecular analyses. Isolation of Nuclei Tagged in specific Cell Types (INTACT) is an easily reproducible method that allows the enrichment of biotin-tagged cell-type-specific nuclei from the total nuclei pool using biotin-streptavidin affinity purification. Here, we provide a detailed INTACT protocol for isolating nuclei from the Arabidopsis SAM. One can also adapt this protocol to isolate nuclei from other tissues and cell types for investigating tissue/cell-type-specific transcriptome and epigenome and their changes during developmental programs at a high spatiotemporal resolution. Furthermore, due to its low cost and simple procedures, INTACT can be conducted in any standard molecular laboratory.


Arabidopsis; Biotinylation; Cell-type-specific promoter; in situ streptavidin histochemistry; INTACT; low-input RT-qPCR; Shoot apical meristem

Published in

Methods in Molecular Biology
2023, Volume: 2686, number: 2686, pages: 313-328 Title: Flower Development : Methods and Protocols
ISBN: 978-1-0716-3298-7, eISBN: 978-1-0716-3299-4
Publisher: Humana Press Inc.

    UKÄ Subject classification

    Cell Biology

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