The candidate's career objective is to conduct clinically relevant basic research as a clinician scientist. As an orthopaedic traumatologist, the long-term goal is to use the knowledge gained from basic research to improve fracture management. Over a 5 year period, the proposed work is intended to provide the tools to become an independent scientific investigator. His interests are in the molecular mechanisms that regulate skeletal repair. Impaired healing, occurring in approximately 560,000 fractures annually in the U.S., is physically disabling and costly. While the molecular and cellular events which occur during repair are poorly understood, there are clear similarities between adult bone healing and fetal bone formation. During development, angiogenesis is an essential, highly regulated process required for osteogenesis: in endochondral ossification, vessels penetrate the avascular hypertrophic cartilage, which then undergoes apoptosis and bone formation; and in intramembranous ossification, capillary formation is closely coordinated with the differentiation of osteoblasts from mesenchymal precursors, which form matrix and mineral. The hypothesis of this research proposal is that angiogenesis mediates the terminal differentiation of chondrocytes and osteoblasts during fracture repair.
The aims of this research proposal are: 1) to determine the spatial and temporal distribution of known angiogenic factors in adult bone repair using murine models which favor endochondral or intramembranous ossification; 2) to determine the extent to which ossification during healing is affected by angiogenesis; and 3) to explore the relation of the determinants of cartilage maturation, cartilage differentiation, and hypertrophic cartilage degradation, to the angiogenic program. The training will include necessary didactic studies in cellular and molecular biology, biochemistry, statistics and the responsible conduct of science. This course work will be supplemented by seminars and conferences, formal presentations at local and national meetings, and supervised preparation of manuscripts and grants. The sponsors and mentors have been chosen for their expertise in areas relevant to the proposed research and their ability to provide guidance on career development. The Department of Orthopaedic Surgery and UCSF are fully committed to the support of junior faculty researchers.
| Lu, Chuanyong; Saless, Neema; Wang, Xiaodong et al. (2013) The role of oxygen during fracture healing. Bone 52:220-9 |
| Ogilvie, Christian M; Lu, Chuanyong; Marcucio, Ralph et al. (2012) Vascular endothelial growth factor improves bone repair in a murine nonunion model. Iowa Orthop J 32:90-4 |
| Lu, Chuanyong; Saless, Neema; Hu, Diane et al. (2011) Mechanical stability affects angiogenesis during early fracture healing. J Orthop Trauma 25:494-9 |
| Lu, Chuanyong; Xing, Zhiqing; Yu, Yan-yiu et al. (2010) Recombinant human bone morphogenetic protein-7 enhances fracture healing in an ischemic environment. J Orthop Res 28:687-96 |
| Lu, Chuanyong; Hansen, Erik; Sapozhnikova, Anna et al. (2008) Effect of age on vascularization during fracture repair. J Orthop Res 26:1384-9 |
| Lu, Chuanyong; Miclau, Theodore; Hu, Diane et al. (2007) Ischemia leads to delayed union during fracture healing: a mouse model. J Orthop Res 25:51-61 |
| Miclau, Theodore; Lu, Chuanyong; Thompson, Zachary et al. (2007) Effects of delayed stabilization on fracture healing. J Orthop Res 25:1552-8 |
| Mullis, Brian H; Copland, Spencer T; Weinhold, Paul S et al. (2006) Effect of COX-2 inhibitors and non-steroidal anti-inflammatory drugs on a mouse fracture model. Injury 37:827-37 |
| Lu, Chuanyong; Marcucio, Ralph; Miclau, Theodore (2006) Assessing angiogenesis during fracture healing. Iowa Orthop J 26:17-26 |
| Lu, Chuanyong; Miclau, Theodore; Hu, Diane et al. (2005) Cellular basis for age-related changes in fracture repair. J Orthop Res 23:1300-7 |
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