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ID 117543
Title Alternative
結腸上皮細胞のin vitro基底膜形成における近傍線維芽細胞由来IV型コラーゲンの寄与
BM collagen IV deposition by proximal fibroblasts
Author
Tentaku, Aya Tokushima University
Sejima, Kurumi Tokushima University
Nagao, Toshiki Tokushima University
Keywords
Basement membrane
collagen IV
fibroblast
colon epithelium
co-culture
Content Type
Thesis or Dissertation
Description
The basement membrane (BM) underlying epithelial tissue is a thin layer of extracellular matrix that governs tissue integrity and function. Epithelial BMs are generally assembled using BM components secreted from two origins: epithelium and stroma. Although de novo BM formation involves self-assembly processes of large proteins, it remains unclear how stroma-derived macromolecules are transported and assembled, specifically in the BM region. In this study, we established an in vitro co-culture model of BM formation in which DLD-1 human colon epithelial cells were cultured on top of collagen I gel containing human embryonic OUMS-36T-2 fibroblasts as stromal cells. A distinct feature of our system is represented by OUMS-36T-2 cells which are almost exclusively responsible for synthesis of collagen IV, a major BM component. Exploiting this advantage, we found that collagen IV incorporation was significantly impaired in culture conditions where OUMS-36T-2 cells were not allowed to directly contact DLD-1 cells. Soluble collagen IV, once diluted in the culture medium, did not accumulate in the BM region efficiently. Live imaging of fluorescently tagged collagen IV revealed that OUMS-36T-2 cells deposited collagen IV aggregates directly onto the basal surface of DLD-1 cells. Collectively, these results indicate a novel mode of collagen IV deposition in which fibroblasts proximal to epithelial cells exclusively contribute to collagen IV assembly during BM formation.
Journal Title
The FEBS Journal
ISSN
17424658
1742464X
NCID
AA11998513
AA12092067
Publisher
Federation of European Biochemical Societies|Wiley
Volume
289
Issue
23
Start Page
7466
End Page
7485
Published Date
2022-06-22
Remark
内容要旨・審査要旨・論文本文の公開
本論文は,著者Aya Tentakuの学位論文として提出され,学位審査・授与の対象となっている。
Rights
This is the peer reviewed version of the following article: Tentaku, A., Kurisu, S., Sejima, K., Nagao, T., Takahashi, A. and Yonemura, S. (2022), Proximal deposition of collagen IV by fibroblasts contributes to basement membrane formation by colon epithelial cells in vitro. FEBS J., which has been published in final form at https://doi.org/10.1111/febs.16559. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
ETD
MEXT report number
甲第3657号
Diploma Number
甲栄第293号
Granted Date
2022-09-22
Degree Name
Doctor of Nutritional Science
Grantor
Tokushima University
departments
Medical Sciences