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Updated: Aug 5, 2026
07:23
Culture of Murine Embryonic Metatarsals: A Physiological Model of Endochondral Ossification
Published on: December 3, 2016
Proteomic dynamics in endochondral ossification: insights from antler tip analysis
Xi Xi1, Xinyue Cao1, Yuying Zhou2
1Northeast Asia Research Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, China.
Peerj
|July 31, 2026
Summary
This study reveals key proteins driving antler regeneration, a process mirroring embryonic bone development. Findings illuminate progenitor cell traits and protein dynamics, offering insights for regenerative medicine.
Area of Science:
- Biochemistry
- Developmental Biology
- Proteomics
Background:
- Antler regeneration mimics embryonic skeletal development via endochondral ossification (ECO).
- The molecular control of cell fate and tissue formation in antler growth zones is not well understood.
- The antler growth center contains progenitor cells with multipotent differentiation capacity.
Purpose of the Study:
- To create a comprehensive proteomic map of the sika deer antler growth center.
- To identify proteins regulating endochondral ossification stages in antlers.
- To investigate the characteristics of antler progenitor cells.
Main Methods:
- Proteomic profiling of the sika deer antler growth center using data-independent acquisition (DIA) mass spectrometry.
- Integration of weighted gene co-expression network analysis (WGCNA), Fuzzy C-means clustering, and feature selection for proteome dynamics.
- Gene ontology (GO) enrichment analysis for differentially expressed proteins and reanalysis of transcriptomic data.
Main Results:
- Identification of 8,173 proteins, providing extensive proteomic coverage of the antler growth center.
- Distinct protein expression modules linked to sequential ECO stages, from mesenchymal proliferation to cartilage mineralization.
- Detection of key chondrogenic transcription factors (SOX9, SOX6, RUNX3) and characterization of antler stem cells as a unique MSC population with ESC-like features.
Conclusions:
- A spatially resolved proteomic atlas of the antler growth center was generated.
- Key regulatory proteins governing endochondral ossification stages were identified.
- Insights into progenitor cell biology and protein dynamics offer potential for bone repair and regenerative medicine.
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