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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Production of interferon-beta by fibroblast cells on membranes prepared with RGD-containing peptides
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Production of interferon-beta by fibroblast cells on membranes prepared with RGD-containing peptides

机译:成纤维细胞在含RGD肽制备的膜上产生干扰素-β

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The production of interferon-beta by NB1-RGB fibroblast cells cultured on protein and peptide membranes prepared from silk fibroin, motif peptides of silk fibroin [(AG)_n] containing arginine- glycine-aspartic acid (RGD) peptide, and Pronectin~(TM) was investigated. The cell density on various protein and peptide membranes was approximately the same, although the production of interferon-beta depended significantly on the membranes where the cells were cultured. The highest production of interferon-beta was observed when the cells were cultured on (AG)_6RGD(AG)_7 membranes prepared with hexafluoroacetone (HFA) as the casting solvent. On RGD-containing peptide membranes more centrally located in the peptides, the cells produced more interferon-beta when the peptide membranes were prepared with HFA as the casting solvent. However, there was no enhanced production of interferon-beta by cells on (AG)_6RGD(AG)_7 membranes prepared with 9 mol/L LiBr or 4.5 mol/L LiClO_4 solution as the casting solvent. Therefore, both the chemical composition and the secondary and higher order structure of the peptide membranes are important for enhanced production of interferon-beta. The blocking of integrin beta _1 on the cells by anti-integrin bet _1 antibody prevented the enhanced production of interferon-beta on (AG)_6RGD(AG)_7 membranes prepared with HFA. We suggest that the cells must bind to the RGD sequence having the appropriate conformation through their integrin beta for enhanced production of interferon-beta.
机译:NB1-RGB成纤维细胞在丝素蛋白,含精氨酸-甘氨酸-天冬氨酸(RGD)肽的丝素蛋白[(AG)_n]的基序肽和Pronectin〜( TM)被调查。尽管干扰素-β的产生显着取决于培养细胞的膜,但各种蛋白质和肽膜上的细胞密度大致相同。当将细胞培养在以六氟丙酮(HFA)作为流延溶剂制备的(AG)_6RGD(AG)_7膜上时,观察到了最高的干扰素-β产生。在以肽为中心的含RGD肽膜上,当使用HFA作为流延溶剂制备肽膜时,细胞产生更多的干扰素-β。但是,在以9 mol / L LiBr或4.5 mol / L LiClO_4溶液为浇铸溶剂制备的(AG)_6RGD(AG)_7膜上,细胞的干扰素-β产量没有增加。因此,肽膜的化学组成以及二级和高级结构对于提高干扰素-β的产生都是重要的。抗整合素bet _1抗体对细胞上整合素β_1的阻止阻止了用HFA制备的(AG)_6RGD(AG)_7膜上干扰素β的产生增加。我们建议细胞必须通过其整联蛋白β结合具有适当构象的RGD序列,以增强干扰素β的产生。

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