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Regeneration of Oral Mucosa by Tissue Engineered Oral Mucosa Grafts.

Research Project

Project/Area Number 16390581
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Surgical dentistry
Research InstitutionNiigata University

Principal Investigator

YOSHIZAWA Michiko  Niigata University, Institute of Medicine and Dentistry, Assistant, 医歯学系, 助手 (60303137)

Co-Investigator(Kenkyū-buntansha) ONO Yukiko  Niigata University Medical and Dental Hospital, Assistant, 医歯学総合病院, 助手 (80345511)
TERASHI Hiroto  Kobe University Hospital, Associate Professor, 医学部附属病院, 助教授 (80217421)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥5,900,000 (Direct Cost: ¥5,900,000)
Fiscal Year 2006: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2005: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2004: ¥3,700,000 (Direct Cost: ¥3,700,000)
Keywordsregenerative medicine / oral mucosa / oral keratinocyte / 上皮細胞 / 組織工学
Research Abstract

[Introduction] We have developed an ex vivo produced oral mucosa equivalent (EVPOME) in a serum-free culture system without a feeder layer. EVPOME is composed of a stratified layer of oral keratinocytes seeded onto a human Cadaveric dermis, AlloDerm^<【○!R】>. We had started clinical application of EVPOME since 2000. The healing period and the degree of scar formation seemed to be different depend on the sites of grafting. It is necessary to investigate the mechanism of regeneration of oral mucosa by EVPOME in order to obtain a good healing of oral mucosa. The objective of the present study was to develop the animal model of grafted EVPOME on the dorsum skin and in oral cavity and to evaluate the course after EVPOME grafting histologically. [Materials and Methods] The full thickness defects on the dorsum skin or 5mm^2 defects on the buccal mucosa were created in 4-5 week-old nude mice (BALB/c) and EVPOMEs were grafted on the defect. Grafted EVPOMEs were harvested at 5, 7, 14, 21, and 28 days postgrafting for histological examination. As a control, AlloDerm^<【○!R】> was grafted in those defects. [Results] The epithelial coverage was not seen at day 7 postoperatively in both EVPOME and AlloDerm^<【○!R】> grafting on the dorsum skin in the mice. In intraoral grafting group, epithelium was seen on AlloDerm^<【○!R】> as same as EVPOME cultured in vitro at day 5 postoperatively. A discontinuous basal and suprabasal epithelial layer survived, while the superficial keratinized epithelial layer tended to be peeled off AlloDerm^<【○!R】> at day7 postoperatively. Epithelium was more stratified similar to the adjacent mucosa after dayl4 postoperatively. [Discussion and Conclusion] These results suggested that both of the epithelium and basement membrane in EVPOME survived after intraoral grafting and contributed to regeneration of oral mucosa in nude mice, whereas epithelium of EVPOME was not survived after grafting on the dorsum skin.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (6 results)

All 2007 2006 2005 Other

All Journal Article (6 results)

  • [Journal Article] 培養複合口腔粘膜(EVPOME)の口腔癌治療への応用2007

    • Author(s)
      芳澤享子, 寺師浩人, 他9名
    • Journal Title

      日本再生医療学会雑誌 6(2)

      Pages: 203-208

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Clinical application of Ex Vivo Produced Oral Mucosa Equivalent in the Field of Oral Cancer Treatment.2007

    • Author(s)
      Yoshizawa M, Terashi H, et al.
    • Journal Title

      Regenerative medicine 6(2)

      Pages: 203-208

    • NAID

      40015499384

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 培養複合口腔粘膜の臨床応用2006

    • Author(s)
      寺師浩人, 芳澤享子, 他10名
    • Journal Title

      頭頸部癌 32(3)

      Pages: 276-280

    • NAID

      10018302522

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Clinical application of Ex Vivo Produced Oral Mucosa Equivalent2006

    • Author(s)
      Terashi H, Yoshizawa M, et al.
    • Journal Title

      Japanese Journal of Head and Neck Cancer 32(3)

      Pages: 281-285

    • NAID

      10018302522

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 凍結培養細胞を用いた培養複合口腔粘膜作製に関する基礎的研究2005

    • Author(s)
      小山貴寛, 芳澤享子, 他3名
    • Journal Title

      口腔科学会誌 54(2)

      Pages: 253-263

    • NAID

      10015656677

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 培養複合口腔粘膜(EVPOME)の口腔癌治療への応用

    • Author(s)
      芳澤享子, 寺師浩人, 他9名
    • Journal Title

      日本再生医療学会雑誌 (印刷中)

    • Related Report
      2006 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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