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| Status |
Public on Apr 22, 2024 |
| Title |
MECHANISMS UNDERLYING THE DIRECT PROGRAMMING OF MOUSE EMBRYONIC FIBROBLASTS TO THYMIC EPITHELIAL CELLS BY FOXN1 [RNA-seq] |
| Organism |
Mus musculus |
| Experiment type |
Expression profiling by high throughput sequencing
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| Summary |
Thymic epithelial cells (TECs) are a critical functional component of the thymus’s ability to generate T cells for the adaptive immune system in vertebrates. However, no in vitro system for studying TEC function exists. Overexpressing the transcription factor FOXN1 initiates transdifferentiation of fibroblasts into TEC-like cells (iTECs) that support T cell differentiation in culture or after transplant. In this study, we characterized iTEC programming at the cellular and molecular level to determine how it proceeds and identified mechanisms that can be targeted for improving this process. These data showed that iTEC programming consisted of discrete gene expression changes that differed early and late in the process, and that iTECs upregulated markers of both cortical and medullary TEC (cTEC and mTEC) lineages. We demonstrated that promoting proliferation enhanced iTEC generation, and that Notch inhibition allowed induction of mTEC differentiation. Finally, we showed that MHCII expression was the major difference between iTECs and fetal TECs. MHCII expression was improved by co-culturing iTECs with fetal double-positive T-cells. This study supports future efforts to improve iTEC generation for both research and translational uses.
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| Overall design |
Programming process including MEF negative control, fetal TEC positive control, iTECs 2, 10 days post-programming. Additionally, we added iTECs 12 days post-reprogramming that are sorted based on an epithelial cell marker (Epcam) expression.
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| Contributor(s) |
Ma Z, Kang SW |
| Citation missing |
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| Submission date |
Apr 17, 2024 |
| Last update date |
Apr 23, 2024 |
| Contact name |
Seung Woo Kang |
| Organization name |
The University of Georgia
|
| Department |
Genetics
|
| Lab |
Manley Lab
|
| Street address |
500 D.W. Brooks Dr.
|
| City |
Athens |
| State/province |
GA |
| ZIP/Postal code |
30602 |
| Country |
USA |
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| Platforms (1) |
| GPL19057 |
Illumina NextSeq 500 (Mus musculus) |
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| Samples (13)
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| Relations |
| BioProject |
PRJNA1101559 |
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