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São Paulo Research Foundation (FAPESP)
Post-doctoral Fellowships in Oral and Maxillofacial Surgery
São Paulo Research Foundation (FAPESP)
FAPESP funded by taxpayers in the state of São Paulo, with the mission to support research projects in institutions of higher education and research in all fields of knowledge.
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JOB DETAILS
Published: 7 days ago
Application deadline: Jan 23
Location: São Paulo/SP, Brazil
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Post-doctoral Fellowships in Oral and Maxillofacial Surgery

Nº: 2559

Field of knowledge: Dentistry

FAPESP process: 2017/12622-7

Project title: Cell therapy: potential of mesenchymal stem cells, vegf-a and bmp-9 to regenerate bone tissue

Working area: Oral and Maxillofacial Surgery

Number of places: 2

Start: 2019-03-01

Principal investigator: Adalberto Luiz Rosa

Unit/Instituition: Faculdade de Odontologia de Ribeirão Preto

Deadline for submissions: 2019-01-23

Publishing date: 2018-12-06

Locale: Av. do Café, s/n, Ribeirão Preto

E-mail for proposal submission: adalrosa@forp.usp.br

Summary

The Bone Research Lab from School of Dentistry of Ribeirão Preto, University of São Paulo – Ribeirão Preto, SP, Brazil, is taking applications for 02 postdoctoral research positions to join a thematic project supported by FAPESP for 02 years.

The highly motivated candidate must have taken a PhD degree in Dentistry in the past 02 years and should be interested in working with cell therapy to regenerate bone tissue. The candidate must have proficiency, preferentially demonstrated by published articles, in cell culture with emphasis in primary culture of mesenchymal stem cells and their osteoblastic differentiation, cell transfection, CRISPR, real-time PCR, Western blot, animal surgery (rat and mouse), microtomographic analysis and histological analysis of non-decalcified tissues. Excellent oral and written communication skills are required.

Each one of the 02 selected candidates will work on subprojects 1 and 2, respectively, which are described below in the Project Abstract.

Please, e-mail your application by January 23rd, 2019, including cover letter, CV and 02 recommendation letters to Professor Adalberto Luiz Rosa (adalrosa@forp.usp.br).

Of the projects

Bone tissue has high capacity of regeneration, but in several situations the extent of the injury overcomes its regenerative potential. In this scenario, therapies based on the use of mesenchymal stem cells (MSCs) have aroused the attention of many researchers for being a promising alternative compared with the available treatments. However, many molecular, cellular and tissue characteristics remain unmet in the literature to make cell therapy an effective treatment for bone repair both in healthy and systemic compromised patients by pathologies such as osteoporosis, diabetes and hypertension.

In keeping with this, this research project consists of three subprojects that aim to: (1) evaluate the potential of MSCs harvested from either bone marrow (BM-MSCs) or adipose tissue (AT-MSCs) combined with vascular endothelial growth factor A (VEGF-A) and/or bone morphogenetic protein 9 (BMP-9) to repair bone defects; (2) evaluate the potential of these MSCs genetically edited to overexpress VEGF-A and/or BMP-9 to repair bone defects; and (3)evaluate the effect of BM-MSCs harvested from healthy rats on the osteogenic potential of BM-MSCs harvested from osteoporotic, diabetic and hypertensive rats. To develop subprojects 1 and 2, BM-MSCs and AT-MSCs will be treated with VEGF-A and/or BMP-9 or genetically edited by clustered regularly interspaced short palindromic repeats (CRISPR-Cas9) to overexpress VEGF-A and/or BMP-9. Those cells will be evaluated in vitro to assess their angiogenic and osteogenic potentials as well as their large scale genomic and proteomic profile. For bone repair, BM-MSCs and AT-MSCs either combined with VEGF-A and/or BMP-9 or edited to overexpress these factors will be directly injected into rat bone calvarial defects. To evaluate the presence of cells in the defects, Luc-expressing cells will be tracked by bioluminescent imaging. Up to 4 weeks, vasculogenesis and bone formation will be evaluated by in vivo micro-CT. After 4 weeks, the animals will be euthanized and the harvested calvaria evaluated by histological analysis. 

In the subproject 3, the effect of BM-MSCs harvested from healthy rats on the osteoblastic differentiation of BM-MSCs from osteoporotic, diabetic and hypertensive rats will be evaluated using an indirect co-culture model. These studies are the first step aiming to apply these cell therapies to regenerate bone defects in the presence of such pathologies.

This opportunity is open to candidates of any nationalities. The selected candidate will receive a FAPESP’s Post-Doctoral fellowship in the amount of R$ 7,373.10 monthly and a research contingency fund, equivalent to 15% of the annual value of the fellowship which should be spent in items directly related to the research activity.

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