title: Enhanced insulin production from murine islet beta cells incubated on poly(3-hydroxybutyrate-co-3-hydroxyhexanoate).
abstract: Islet transplantation represents an important alternative for the treatment of diabetes. However, the selection of suitable materials is critical for the success of such an implantation application. In this study, cellular migration, aggregation, and insulin production of a murine islet beta-cell line, NIT-1 cells on microbially produced polyesters poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx), poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3HB4HB) or polylactic acid (PLA) films were investigated. Spherical islet-like structures were only detected on PHBHHx films after 48 h cultivation. To understand the mechanism underlying the formation of cell aggregates, NIT-1-GFP, a stable transfectant of the green fluorescent protein was used in a time-lapse imaging study. Cell aggregation began on PHBHHx at 2 h, and became obvious at 4 h. Furthermore, cells on PHBHHx displayed higher metabolic activities measured by MTT assay than that on tissue culture plate. More importantly, insulin gene expression as well as extracellular secretion was upregulated after growth on PHBHHx for 72 h. Thus, PHBHHx can be a strong candidate for islet transplantation.
authors.affiliation: Multidisciplinary Research Center, Shantou University, Shantou, Guangdong 515063, China.
authors.forename: Xiao-Di
authors.initials: XD
authors.lastname: Yang
authors.forename: Hong-Ming
authors.initials: HM
authors.lastname: Li
authors.forename: Miao
authors.initials: M
authors.lastname: Chen
authors.forename: Xiang-Hui
authors.initials: XH
authors.lastname: Zou
authors.forename: Lin-Yun
authors.initials: LY
authors.lastname: Zhu
authors.forename: Chi-ju
authors.initials: CJ
authors.lastname: Wei
authors.forename: Guo-Qiang
authors.initials: GQ
authors.lastname: Chen
mesh_terms: D020155:3-Hydroxybutyric Acid; D000818:Animals; D001672:Biocompatible Materials; D002208:Caproates; D002460:Cell Line; D002465:Cell Movement / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D018274:Electroporation; D049452:Green Fluorescent Proteins / Q000378:metabolism; D007150:Immunohistochemistry; D007328:Insulin / Q000096:biosynthesis* / Q000235:genetics; D050417:Insulin-Secreting Cells / Q000378:metabolism*; D016381:Islets of Langerhans Transplantation; D051379:Mice; D020133:Reverse Transcriptase Polymerase Chain Reaction; D000094122:Polyhydroxybutyrates
chemical_list: D020155:3-Hydroxybutyric Acid; D001672:Biocompatible Materials; D002208:Caproates; D049452:Green Fluorescent Proteins; D007328:Insulin; C115940:poly(3-hydroxybutyrate-co-3-hydroxyhexanoate); D000094122:Polyhydroxybutyrates