Enhancement of bone repair with a helper-dependent adenoviral transfer of bone morphogenetic protein-2

2002 ◽  
Vol 297 (3) ◽  
pp. 523-527 ◽  
Author(s):  
Nobuhiro Abe ◽  
Yu-Po Lee ◽  
Makoto Sato ◽  
Xuguang Zhang ◽  
Jing Wu ◽  
...  
2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Shintaro Shoji ◽  
Kentaro Uchida ◽  
Wataru Satio ◽  
Hiroyuki Sekiguchi ◽  
Gen Inoue ◽  
...  

Abstract Background An enzymatic crosslinking strategy using hydrogen peroxide and horseradish peroxidase is receiving increasing attention for application with in situ-formed hydrogels (IFHs). Several studies have reported the application of IFHs in cell delivery and tissue engineering. IFHs may also be ideal carrier materials for bone repair, although their potential as a carrier for bone morphogenetic protein (BMP)-2 has yet to be examined. Here, we examined the effect of an IFH made of hyaluronic acid (IFH-HA) containing BMP-2 in promoting osteogenesis in a mouse refractory fracture model. Methods Immediately following a fracture procedure, animals either received no treatment (control) or an injection of IFH-HA/PBS or IFH-HA containing 2 μg BMP-2 (IFH-HA/BMP-2) into the fracture site (n = 16, each treatment). Results Fracture sites injected with IFH-HA/BMP-2 showed significantly greater bone volume, bone mineral content, and bone union compared with sites receiving no treatment or treated with IFH-HA/PBS alone (each n = 10). Gene expression levels of osteogenic markers, Alpl, Bglap, and Osx, were significantly raised in the IFH-HA/BMP-2 group compared to the IFH-HA/PBS and control groups (each n = 6). Conclusion IFH-HA/BMP-2 may contribute to the treatment of refractory fractures.


2019 ◽  
Vol 20 (24) ◽  
pp. 6137 ◽  
Author(s):  
Guang Yang ◽  
Zhendong Qin ◽  
Hongyan Kou ◽  
Rishen Liang ◽  
Lijuan Zhao ◽  
...  

Intermuscular bones (IBs) are only found in the muscles of fish. Bone morphogenetic protein 2 (bmp2) is considered to be the most active single osteogenesis factor. It promotes cell proliferation and differentiation during bone repair, as well as inducing the formation of bones and cartilages in vivo. However, detailed investigations of this family in fish are incredibly limited. Here, we have used a variety of published and unpublished bmp2 sequences for teleosts and cartilage fish in order to explore and expand our understanding of bmp2 genes in fish. Our results confirmed that teleost genomes contain two or more bmp2 genes, and the diversity of bmp2 genes in vertebrates appears to be as a result of a combination of whole genome duplication (WGD) and gene loss. Differences were also observed in tissue distribution and relative transcription abundance of the bmp2s through a transcriptomic analysis. Our data also indicated that bmp2b may play an important role in the formation of IBs in teleosts. In addition, protein sequence alignments and 3D structural predictions of bmp2a and bmp2b supported their similar roles in fishes. To summarize, our existing work provided novel insights into the bmp2 family genes in fishes through a mixture of comparative genomic and transcriptomic analysis.


2011 ◽  
Vol 27 (5) ◽  
pp. 971-977 ◽  
Author(s):  
Anderson Paim Rosa ◽  
Luiz Gustavo de Sousa ◽  
Simone Cecilio Hallak Regalo ◽  
João Paulo Mardegan Issa ◽  
Ana Paula Amorim Barbosa ◽  
...  

2006 ◽  
Vol 0 (0) ◽  
pp. 060801084750025
Author(s):  
M. Egermann ◽  
A.W. Baltzer ◽  
S. Adamaszek ◽  
C. Evans ◽  
P. Robbins ◽  
...  

2021 ◽  
pp. 1-9
Author(s):  
Shintaro Shoji ◽  
Kentaro Uchida ◽  
Ryo Tazawa ◽  
Wataru Saito ◽  
Akiyoshi Kuroda ◽  
...  

BACKGROUND: An enzymatic crosslinking strategy using hydrogen peroxide and horseradish peroxidase is receiving increasing attention for application with in situ-formed hydrogels (IFHGs). IFHGs may also be ideal carrier materials for bone repair, although their ability to carry bone morphogenetic protein-2 (BMP2) has yet to be examined. OBJECTIVE: We examined the effectiveness of an IFHG made of hyaluronan (IFHG-HA) containing BMP2 for promoting bone formation in a mouse critical size bone defect model. METHODS: C57/BL6J mice received a 2-mm femoral critical-sized bone defect before being randomly assigned to one of the following treatment groups (n = 6): control (no treatment), IFHG-HA only, PBS with BMP2, and IFHG-HA with BMP2. X-ray radiographs were utilized to track new bone formation, and micro-computed tomography and histological examination were performed on new bone formed at the bone defect site two weeks after surgery. RESULTS: Mice treated with PBS with BMP2 and IFHG-HA with BMP2 had greater bone volume (BV) and bone mineral content (BMC) than those receiving control, and successfully achieved consolidation. Mice treated with IFHG-HA with BMP2 had significantly higher BV and BMC than those treated with PBS with BMP2. CONCLUSIONS: IFHG-HA may be an effective carrier for BMP2 to enable delivery for bone defect repair.


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