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Fluorescence microscopy data on expression of Paired Box Transcription Factor 7 in skeletal muscle of APOBEC2
Hideaki Ohtsubo1, Yusuke Sato1,2, Yuji Matsuyoshi1
1Department of Animal and Marine Bioresource Sciences, Graduate School of Agriculture, Kyushu University, Hakozaki, Fukuoka 812-8581, Japan.
Abstract:
The data presented in this article are related to the research articles entitled "APOBEC2 negatively regulates myoblast differentiation in muscle regeneration" and "Data supporting possible implication of APOBEC2 in self-renewal functions of myogenic stem satellite cells: toward understanding the negative regulation of myoblast differentiation" (Ohtsubo et al., 2017a, 2017b) [1,2]. This article provides in vivo phenotypical data to show that Paired Box Transcription Factor 7 (Pax7)-positive cell number (per myofiber) is significantly lower in APOBEC2 (a member of apoB mRNA editing enzyme, catalytic polypeptide-like family)-knockout muscle than the control wild-type tissue at the same age of 8-wk-old in mice. The emerging results support an essential role for APOBEC2 in the self-renewal functions of myogenic stem satellite cells, namely the re-establishment of quiescent status after activation and proliferation of myoblasts.
Insights
APOBEC2 plays a crucial role in muscle regeneration by supporting the self-renewal of myogenic stem satellite cells. Its absence reduces the number of Pax7-positive cells, impacting muscle repair.
Area of Science:
- Muscle regeneration
- Cellular biology
- Biochemistry
Background:
- Myoblast differentiation is key to muscle regeneration.
- Myogenic stem satellite cells are crucial for muscle repair and self-renewal.
- APOBEC2's role in this process requires further elucidation.
Purpose of the Study:
- To investigate the in vivo role of APOBEC2 in muscle regeneration.
- To determine APOBEC2's effect on myogenic stem satellite cell self-renewal.
- To understand APOBEC2's regulation of myoblast differentiation.
Main Methods:
- In vivo phenotypic analysis in mice.
- Comparison of APOBEC2-knockout and wild-type muscle tissues.
- Quantification of Paired Box Transcription Factor 7 (Pax7)-positive cells per myofiber.
Main Results:
- APOBEC2-knockout muscle showed a significantly lower number of Pax7-positive cells compared to wild-type.
- This reduction was observed in 8-week-old mice.
- Data suggest APOBEC2 is essential for maintaining the quiescent state of satellite cells post-activation.
Conclusions:
- APOBEC2 is vital for the self-renewal of myogenic stem satellite cells.
- APOBEC2 negatively regulates myoblast differentiation.
- The findings highlight APOBEC2's importance in muscle regeneration and stem cell function.
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