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Published on: May 28, 2015
BMP9 expression in the adult rat brain
Chikara Ogawa1, Sumiko Mikawa2, Yutaro Hayashi3
1Department of Dentistry and Oral and Maxillofacial Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashiku, Hamamatsu, Shizuoka, 431-3192, Japan; Department of Organ & Tissue Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashiku, Hamamatsu, Shizuoka, 431-3192, Japan.
Bone morphogenetic protein 9 (BMP9) is widely expressed in the adult rat central nervous system (CNS). This abundant expression in neurons, oligodendrocytes, and ependymal cells suggests crucial roles in the adult brain.
Area of Science:
- Neuroscience
- Molecular Biology
- Cell Biology
Background:
- Bone morphogenetic protein 9 (BMP9), also known as growth differentiation factor 2 (GDF2), is a member of the transforming growth factor β (TGF β) superfamily.
- BMP9 is known to play critical roles in developmental processes such as angiogenesis, hematopoiesis, hepatogenesis, osteogenesis, and glucose metabolism.
- However, its expression and function within the adult central nervous system (CNS) remain largely uncharacterized.
Purpose of the Study:
- To investigate the expression pattern of BMP9 within the adult rat CNS.
- To determine which cell types in the adult brain express BMP9 protein.
Main Methods:
- Immunohistochemistry was employed to detect BMP9 protein localization in adult rat brain tissue.
- Specific antibodies against BMP9 were used to visualize its presence in different neural and glial cell populations.
Main Results:
- BMP9 was found to be intensely expressed in the majority of neurons and their associated axons throughout the adult CNS.
- Expression of BMP9 protein was also detected in oligodendrocytes, the myelin-producing cells of the CNS.
- Ependymal cells, lining the brain ventricles, were also identified as BMP9-expressing cells.
Conclusions:
- BMP9 exhibits widespread expression across various cell types in the adult rat CNS, including neurons, oligodendrocytes, and ependymal cells.
- The abundant presence of BMP9 in the adult brain strongly suggests significant and previously underappreciated roles in its function.
- Further research is warranted to elucidate the specific functions of BMP9 in the adult central nervous system.
