PXD039041-1
PXD039041 is an original dataset announced via ProteomeXchange.
Dataset Summary
| Title | Ovol2 sustains postnatal thymic epithelial cell identity |
| Description | Thymic epithelial cells (TECs) begin to develop embryonically in mice and humans, expand in number through puberty, and then stabilize before declining during early adulthood. We identified a mechanism by which TEC numbers and function are maintained postnatally, discovered through a forward genetic screen for altered immune cell development in mice. A viable missense allele (C120Y) of Ovol2 resulted in lymphopenia, in which T cell development was compromised by loss of medullary TECs and dysfunction of cortical TECs. OVOL2 is an essential regulator of epithelial to mesenchymal transition (EMT), and we show that the epithelial identity of TECs is subverted towards a mesenchymal state in OVOL2-deficient mice. We document global changes in chromatin accessibility correlated with gene expression, particularly affecting genes involved in epithelial and mesenchymal cell proliferation and differentiation. OVOL2 regulates chromatin accessibility by inhibiting the BRAF-HDAC complex. In particular, it disrupts the RCOR1-LSD1 complex by directly binding to the lysine demethylase LSD1, resulting in inhibition of LSD1-mediated H3K4me2 demethylation. Thus, OVOL2 controls the epigenetic landscape of TECs, preventing EMT and enforcing TEC identity to support T cell development in the thymus. |
| HostingRepository | MassIVE |
| AnnounceDate | 2023-10-24 |
| AnnouncementXML | Submission_2023-10-24_09:48:30.402.xml |
| DigitalObjectIdentifier | |
| ReviewLevel | Non peer-reviewed dataset |
| DatasetOrigin | Original dataset |
| RepositorySupport | Unsupported dataset by repository |
| PrimarySubmitter | James Moresco |
| SpeciesList | scientific name: Mus musculus; common name: house mouse; NCBI TaxID: 10090; |
| ModificationList | No PTMs are included in the dataset |
| Instrument | Q Exactive HF; Orbitrap Fusion Lumos |
Dataset History
| Revision | Datetime | Status | ChangeLog Entry |
|---|---|---|---|
| 0 | 2022-12-21 09:13:01 | ID requested | |
| ⏵ 1 | 2023-10-24 09:48:30 | announced |
Publication List
| no publication |
Keyword List
| submitter keyword: OVOL2, TECs, thymus, LSD1/RCOR1 complex |
Contact List
| Jin Huk Choi | |
|---|---|
| contact affiliation | University of Texas Southwestern Medical Center |
| contact email | Jin.Choi@utsouthwestern.edu |
| lab head | |
| James Moresco | |
| contact affiliation | UT Southwestern |
| contact email | james.moresco@utsouthwestern.edu |
| dataset submitter | |
Full Dataset Link List
| MassIVE dataset URI |
| Dataset FTP location NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://massive.ucsd.edu/MSV000090946/ |
to receive all new ProteomeXchange dataset release announcements!
