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Micronized acellular dermal matrix as an efficient expansion substrate and delivery vehicle of adipose-derived stem cells for vocal fold regeneration

Authors

  • Qiang Liang MD,

    1. Xijing Hospital,Fourth Military Medical University, Xi'an, Shaanxi, China
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    • Qiang Liang, MD, and Shiyu Liu, PhD, contributed equally to this article.

  • Shiyu Liu PhD,

    1. Research and Development Center for Tissue Engineering, Fourth Military Medical University, Xi'an, Shaanxi, China
    2. Department of Oral Histology and Pathology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
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    • Qiang Liang, MD, and Shiyu Liu, PhD, contributed equally to this article.

  • Peng Han MD,

    1. Xijing Hospital,Fourth Military Medical University, Xi'an, Shaanxi, China
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  • Xiaofeng Li MD,

    1. Department of Otolaryngology and Institute of Traditional Chinese Medicine, Fourth Military Medical University, Xi'an, Shaanxi, China
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  • Xiaobing Li MD,

    1. Department of Otolaryngology and Institute of Traditional Chinese Medicine, Fourth Military Medical University, Xi'an, Shaanxi, China
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  • Yu Zhao MD,

    1. Xijing Hospital,Fourth Military Medical University, Xi'an, Shaanxi, China
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  • Yuanyuan Liang MD,

    1. Xijing Hospital,Fourth Military Medical University, Xi'an, Shaanxi, China
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  • Zhihong Deng PhD,

    Corresponding author
    1. Xijing Hospital,Fourth Military Medical University, Xi'an, Shaanxi, China
    • Department of Otolaryngology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
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  • Yan Jin PhD

    Corresponding author
    1. Research and Development Center for Tissue Engineering, Fourth Military Medical University, Xi'an, Shaanxi, China
    2. Department of Oral Histology and Pathology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
    • Department of Oral Histology and Pathology, School of Stomatology, Fourth Military Medical University, Xi'an 710032, China
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  • This work was performed at the Research and Development Center for Tissue Engineering, Fourth Military Medical University, Xi'an, Shaanxi, China.

  • This study was supported by the funding support from the Nature Science Foundation of China (30973285). The authors have no other funding, financial relationships, or conflicts of interest to disclose.

Abstract

Objectives/Hypothesis:

Cell therapy has been shown to prevent vocal fold scarring and atrophy. However, problems that include the expansion of large numbers of cells in vitro and the poor survival of transplanted cells in vivo must be solved. The aim of this study was to use micronized acellular dermal matrix (MADM) as an expansion substrate of rabbit allogeneic adipose-derived stem cells (ADSCs) and to apply the combination of the matrix and cells, ADSC-MADM, to vocal fold regeneration.

Study Design:

Animal experiment.

Methods:

The proliferation of ADSCs that were cultured on the MADM was evaluated using 3-(4,5-dimethylthizazol-2-yl)-5-(3-carboxymethoxy-phenyl)-2-(4-sulfonyl)-2H-tetrazolium, and a rabbit acute vocal fold injury model was established by laser injury. Eighteen New Zealand white rabbits were randomly divided into three groups, which were injected with ADSC-MADM, ADSCs, and MADM, respectively. Morphological analysis was performed by laryngoscope, and histological analyses were indicated by hematoxylin and eosin staining, van Gieson staining, and immunofluorescence. Additionally, the in vivo survival of the ADSCs was determined by CM-Dil cell labeling.

Results:

When compared with a two-dimensional culture, the MADM significantly promoted proliferation of ADSCs. Morphological and histological analyses indicated that, when compared to only using of MAMD or the nontreatment sample, the use of ADSC-MADM or only using ADSCs successfully prevent scarring and atrophy. Moreover, ADSC-MADM exhibited a better therapeutic effect than when only using ADSCs, which was probably due to the MADM significantly enhancing the survival of transplanted ADSCs.

Conclusions:

MADM could be used as an efficient expansion substrate and delivery vehicle for ADSCs in vocal fold regeneration. Laryngoscope, 2012

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