|
| Status |
Public on Dec 31, 2017 |
| Title |
ChIP-seq for embryonic chicken feather and scale samples |
| Organism |
Gallus gallus |
| Experiment type |
Genome binding/occupancy profiling by high throughput sequencing
|
| Summary |
Feather evolution enabled feathered dinosaurs and early Mesozoic birds to venture into new ecological niches. Studying how feathers and scales are specified provides insight into how a new organ evolves. We use genome-wide analyses to identify feather-associated genes and test their feather-forming ability by expressing them in chicken and alligator scales. Intermediate morphotypes revealed five cardinal morphogenetic events: localized growth zone, follicle invagination, branching, feather keratin differentiation and dermal papilla formation. In contrast to molecules known to induce feathers on scales (retinoic acid, beta-catenin), we identify novel scale-feather converters (Sox2, Zic1, Grem1, Spry2, Sox18) which induce only one or several of the five regulatory modules. Some morphotypes resemble filamentous appendages found in feathered dinosaur fossils, while others demonstrate some characteristics of modern feathers. We propose that at least five morpho-regulatory modules were used to diversify ancient reptile scales. The regulatory combination and hierarchical integration led to extant feather forms.
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| |
|
| Overall design |
H3K27ac ChIP-seq was performed to compare the feather-forming and scale-forming regions. There are 2 replicates for each sample group.
|
| |
|
| Contributor(s) |
Wu P |
| Citation(s) |
29177513 |
| |
| Submission date |
Sep 22, 2016 |
| Last update date |
May 15, 2019 |
| Contact name |
Ping Wu |
| E-mail(s) |
pingwu@usc.edu
|
| Phone |
6264979629
|
| Organization name |
University of Southern California
|
| Department |
Pathology
|
| Street address |
2011 Zonal Ave HMR313A
|
| City |
Los Angeles |
| State/province |
CA |
| ZIP/Postal code |
90033 |
| Country |
USA |
| |
|
| Platforms (1) |
| GPL16133 |
Illumina HiSeq 2000 (Gallus gallus) |
|
| Samples (8)
|
|
| This SubSeries is part of SuperSeries: |
| GSE87250 |
Multiple regulatory modules are required for scale-to-feather conversion |
|
| Relations |
| BioProject |
PRJNA343950 |
| SRA |
SRP090316 |
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