Novel application of human periodontal ligament stem cells and water-soluble chitin for collagen tissue regeneration: In vitro and in vivo investigations

Im Hee Jung, Jung Chul Park, Jane C. Kim, Dong Won Jeon, Seong Ho Choi, Kyoo Sung Cho, Gun Il Im, Byung Soo Kim, Chang Sung Kim

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Human periodontal ligament stem cells (hPDLSCs) have been proposed as an alternative to conventional cosmetic fillers because they display an innate ability to synthesize collagen. The aims of this study were to determine the effects of water-soluble chitin (WSC) on the proliferation and migration of hPDLSCs, and to quantify collagen synthesis in vitro and in vivo compared with human adipose-derived stem cell (hADSC)s. hPDLSCs were isolated from healthy extracted teeth, and the cell proliferation and cell migration capacities of untreated hPDLSCs (control group) and WSC-treated hPDLSCs (test group) were compared. Insoluble/soluble collagen synthesis were also assessed, and collagen related markers were evaluated including lysyl oxidase (LOX), lysyl oxidase like (LOXL)1, LOXL2, and hydroxyproline. In vivo collagen formation was examined by transplanting hyaluronic acid as a cell carrier into the subcutaneous pockets of immunocompromised mice in the control and test groups; histology and immunohistochemistry analyses were performed 4 (n=4) and 8 (n=4) weeks later. There was a dose-dependent enhancement of hPDLSCs proliferation in the test group, and a concomitant reduction in cell migration. The amount of insoluble collagen formed was greater in the test group than in the control group (p<0.05), whereas soluble collagen formation was significantly reduced in the test group (p<0.05). The histology and immunohistochemistry results revealed that the amount of collagen formed in vivo was greater in WSC-treated hPDLSCs than in the control cells at 4 and 8 weeks (p<0.05), and histometric analysis at 8 weeks revealed that enhancement of collagen formation by hPDLSCs was greater than by hADSCs. These results indicate that WSC modulates the properties of hPDLSCs, rendering them more suitable for cosmetic soft-tissue augmentation.

Original languageEnglish
Pages (from-to)643-653
Number of pages11
JournalTissue Engineering - Part A
Volume18
Issue number5-6
DOIs
Publication statusPublished - 2012 Mar 1

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Biochemistry
  • Biomaterials
  • Biomedical Engineering

Fingerprint Dive into the research topics of 'Novel application of human periodontal ligament stem cells and water-soluble chitin for collagen tissue regeneration: In vitro and in vivo investigations'. Together they form a unique fingerprint.

Cite this