期刊
ISCIENCE
卷 23, 期 9, 页码 -出版社
CELL PRESS
DOI: 10.1016/j.isci.2020.101524
关键词
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资金
- National Institutes of Health/National Institute of Dental and Craniofacial Research (NIH/NIDCR) [DE025889, DE027660]
- State University of New York at Buffalo, School of Dental Medicine, Department of Oral Biology training grant (NIH/NIDCR) [DE023526]
Multipotent Delta Np63-positive cells maintain all epithelial cell lineages of the embryonic and adult salivary gland (SG). However, the molecular mechanisms by which Delta Np63 regulates stem/progenitor (SP) cell populations in the SG remains elusive. To understand the role of Delta Np63 in directing cell fate choices in this gland, we have generated Delta Np63- deleted adultmice and primary salivary cell cultures to probe alterations in SP cell differentiation and function. In parallel, we have leveraged RNA-seq and ChIP-seq-based characterization of the Delta Np63-driven cistrome and scRNA-seq analysis to molecularly interrogate altered SG cellular identities and differentiation states dependent on Delta Np63. Our studies reveal that ablation of Delta Np63 results in a loss of the SP cell population and skewed differentiation that is mediated by Follistatin-dependent dysregulated TGF-beta/Activin signaling. These findings offer new revelations into the SP cell gene regulatory networks that are likely to be relevant for normal or diseased SG states.
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