Biomaterial mediated epithelial-mesenchymal interaction of salivary tissue under serum free condition.
Many organs develop from epithelial-mesenchymal interactions such that in order to regenerate these organs, it might be a preferable strategy to recapitulate this process. However, in the current culture system designed for tissue interaction, the supplement of serum is required. The aim of this study is to explore the possibility of reproducing epithelial-mesenchymal interaction and ensuing morphogenesis in a serum-free condition. In accordance with the previous studies, by using a standard model of murine fetal submandibular gland (SMG), the tissue interaction and the morphogenesis were largely dependent on serum. Nonetheless, when tissue recombinants were cultivated on polyvinylidene fluoride (PVDF), but not on other biomaterials, the serum-deprived effect could be rescued. On PVDF, SMG tissue recombinant was able to increase epithelial size, de novo synthesize basement membrane, and develop new branches without serum. Although the gene expression levels of selected morphogens were not significantly altered, the precise localization of morphogenetic-decisive extracellular matrix such as type III collagen and the superior adsorbing capacity of essential diffusible factors like fibroblast growth factor 7 (FGF7) might account for PVDF effect. Accordingly, the result demonstrates that it is possible to establish a serum-free system that is competent in facilitating epithelial-mesenchymal interaction of salivary tissue. With PVDF, the crosstalk between SMG epithelia and mesenchyme could be sustained without serum.
Department of Otolaryngology, National Taiwan University Hospital and College of Medicine, #1, Sec.1 Jen-Ai Road, National Taiwan University, Taipei, Taiwan. yangtl@ntu.edu.tw
Tsung-Lin
TL
Yang
Ya-Chuan
YC
Hsiao
Sung-Jan
SJ
Lin
Hao-Wei
HW
Lee
Pei-Jen
PJ
Lou
Jenq-Yuh
JY
Ko
Tai-Horng
TH
Young
D000327:Adsorption / Q000187:drug effects; D000818:Animals; D001485:Basement Membrane / Q000166:cytology / Q000187:drug effects / Q000648:ultrastructure; D001672:Biocompatible Materials / Q000494:pharmacology*; D016895:Culture Media, Serum-Free; D004848:Epithelium / Q000187:drug effects* / Q000378:metabolism*; D005109:Extracellular Matrix / Q000187:drug effects / Q000378:metabolism; D051523:Fibroblast Growth Factor 7 / Q000378:metabolism; D005786:Gene Expression Regulation / Q000187:drug effects; D008648:Mesoderm / Q000187:drug effects* / Q000378:metabolism*; D051379:Mice; D009024:Morphogenesis / Q000187:drug effects; D009924:Organ Culture Techniques; D011145:Polyvinyls / Q000494:pharmacology; D012469:Salivary Glands / Q000166:cytology / Q000196:embryology / Q000378:metabolism* / Q000648:ultrastructure; D023822:Tissue Engineering; D005465:Fluorocarbon Polymers
D001672:Biocompatible Materials; D016895:Culture Media, Serum-Free; D051523:Fibroblast Growth Factor 7; D011145:Polyvinyls; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers