Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/107415
Title: A transduced living hyaline cartilage graft releasing transgenic stromal cell-derived factor-1 inducing endogenous stem cell homing in vivo
Authors: Leong, Wenyan
Su, Kai
Fang, Yu
Wang, Dong-An
Zhang, Feng
Keywords: DRNTU::Engineering::Bioengineering
Issue Date: 2013
Source: Zhang, F., Leong, W., Su, K., Fang, Y., & Wang, D.-A. (2013). A transduced living hyaline cartilage graft releasing transgenic stromal cell-derived factor-1 inducing endogenous stem cell homing in vivo. Tissue engineering part A, 19(9-10), 1091-1099.
Series/Report no.: Tissue engineering part A
Abstract: Stromal cell-derived factor-1 (SDF-1), also known as a homing factor, is a potent chemokine that activates and directs mobilization, migration, and retention of certain cell species via systemic circulation. The responding homing cells largely consist of activated stem cells, so that, in case of tissue lesions, such SDF-1-induced cell migration may execute recruitment of endogenous stem cells to perform autoreparation and compensatory regeneration in situ. In this study, a recombinant adenoviral vector carrying SDF-1 transgene was constructed and applied to transduce a novel scaffold-free living hyaline cartilage graft (SDF-t-LhCG). As an engineered transgenic living tissue, SDF-t-LhCG is capable of continuously producing and releasing SDF-1 in vitro and in vivo. The in vitro trials were examined with ELISA, while the in vivo trials were subsequently performed via a subcutaneous implantation of SDF-t-LhCG in a nude mouse model, followed by series of biochemical and biological analyses. The results indicate that transgenic SDF-1 enhanced the presence of this chemokine in mouse's circulation system; in consequence, SDF-1-induced activation and recruitment of endogenous stem cells were also augmented in both peripheral blood and SDF-t-LhCG implant per se. These results were obtained via flow cytometry analyses on mouse blood samples and implanted SDF-t-LhCG samples, indicating an upregulation of the CXCR4+(SDF-1 receptor) cell population, accompanied by upregulation of the CD34+, CD44+, and Sca-1+ cell populations as well as a downregulation of the CD11b+ cell population. With the supply of SDF-1-recruited endogenous stem cells, enhanced chondrogenesis was observed in SDF-t-LhCG implants in situ.
URI: https://hdl.handle.net/10356/107415
http://hdl.handle.net/10220/18040
DOI: 10.1089/ten.tea.2012.0441
Rights: © 2013 Mary Ann Liebert, Inc. This paper was published in Tissue Engineering - Part A and is made available as an electronic reprint (preprint) with permission of Mary Ann Liebert, Inc. The paper can be found at the following official DOI: [http://dx.doi.org/ 10.1089/ten.tea.2012.0441]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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