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Tissue-engineered vascular grafts allow neovessel formation by recruiting adjacent vascular tissue.

机译:组织工程化的血管移植物可通过募集邻近的血管组织来形成新血管。

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摘要

Hypothesis: Tissue Engineered Vascular Grafts (TEVGs) constructed by seeding cells autologous bone marrow-derived mononuclear cells onto dissolvable scaffolding aid in the recruitment of cells from either the host's bone marrow or neighboring vasculature to form the graft neotissue.;Methods: RT-PCR was performed on explanted grafts to detect presence of seeded cells. FISH for Y chromosome was performed on female mice with male bone marrow transplant along with female mice with implanted male-composite TEVG.;Results: The seeded cells on implanted TEVGs decrease precipitously from 4.37% to 0.02% from 6hr to 14 days. At 6 months post implantation composite graft TEVGs displayed a high percentage of Y chromosome-positive cells adjacent to male inferior vena cava tissue. Explanted grafts from female mice following male bone marrow transplant revealed no neotissue positive for Y chromosome.;Discussion: TEVGs derive their neotissue from adjacent vasculature following implantation that is mechanistically aided by the presence of seeded bone marrow-derived mononuclear cells.
机译:假设:通过将细胞自体骨髓来源的单核细胞播种到可溶性支架上而构建的组织工程血管移植物(TEVG),可从宿主的骨髓或邻近脉管系统募集细胞以形成移植物新组织。方法:RT-PCR对移植的移植物进行检测,以检测种子细胞的存在。对雄性骨髓移植的雌性小鼠和雄性复合TEVG的雌性小鼠进行Y染色体FISH分析。结果:从6小时到14天,植入的TEVG的种子细胞从4.37%急剧减少至0.02%。植入后6个月,复合移植物TEVGs显示出较高百分比的Y染色体阳性细胞与男性下腔静脉组织相邻。雄性骨髓移植后从雌性小鼠中移植的移植物未显示出Y染色体阳性的新组织。

著录项

  • 作者

    Shoffner, Adam.;

  • 作者单位

    Yale University.;

  • 授予单位 Yale University.;
  • 学科 Health Sciences Medicine and Surgery.
  • 学位 M.D.
  • 年度 2012
  • 页码 43 p.
  • 总页数 43
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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