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Elavl1 is dispensable for appendicular skeletal development
1Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Harvard University, Boston, USA.
Biorxiv : the Preprint Server for Biology
|October 10, 2024
Summary
The RNA-binding protein Elavl1/HuR is essential for embryonic development, but its absence in mouse limb bud mesenchyme did not affect limb skeletal development. This suggests Elavl1/HuR is dispensable for limb development.
Area of Science:
- Developmental Biology
- Molecular Biology
- Genetics
Background:
- Elavl1/HuR is a crucial RNA-binding protein involved in various developmental processes.
- Complete loss of Elavl1/HuR leads to embryonic lethality due to defects in placental branching, embryonic growth, and progenitor cell loss.
Purpose of the Study:
- To investigate the specific roles of Elavl1/HuR during embryonic limb development.
- To determine if Elavl1/HuR is essential for limb skeletal patterning, morphogenesis, and maturation.
Main Methods:
- Conditional knockout of Elavl1 in mouse limb bud mesenchyme.
- Analysis of embryonic and postnatal limb skeletal development, including patterning, morphogenesis, and maturation.
- Comparison of skeletal elements in control and Elavl1 conditional knockout mice.
Main Results:
- Deletion of Elavl1 in limb bud mesenchyme did not result in any observable abnormalities during embryonic limb development.
- Pre- and postnatal limb skeleton development, including skeletal patterning, morphogenesis, and maturation, were normal in knockout animals.
- No significant differences were found in skeletal elements of the stylopod, zeugopod, and autopod between control and Elavl1 conditional knockout mice.
Conclusions:
- Elavl1/HuR function is dispensable during embryonic limb development.
- There is a differential dependency on Elavl1/HuR across different stem cell lineages.
- The study highlights tissue-specific roles and susceptibility to the loss of Elavl1/HuR.
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