کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1421495 986414 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In vitro evaluation of elastin-like polypeptide–collagen composite scaffold for bone tissue engineering
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
In vitro evaluation of elastin-like polypeptide–collagen composite scaffold for bone tissue engineering
چکیده انگلیسی

ObjectivesCollagen and elastin are two key structural proteins found in the extra-cellular matrices (ECMs) of most tissues, yet very little is known about the response of bone cells to elastin or its derivatives. Recently, we have designed and characterized a novel class of ECM-based composite scaffolds with collagen and a genetically engineered polymer, elastin-like polypeptide (ELP) and subsequently showed their superior mechanical properties and drug release characteristics compared to collagen scaffolds. The objective of this research was to evaluate osteoblast growth and expression on these composite scaffolds.MethodsA thorough biochemical and morphological characterization was performed on MC3T3-E1 pre-osteoblast cells cultured on collagen and ELP–collagen scaffolds. Cell viability was assessed using a live/dead assay. Total DNA content of all cells present on various surfaces was quantified. Pre-osteoblast differentiation was assessed by measuring the alkaline phosphatase and osteocalcin production. Mineral deposition by the cultured cells was visualized using the Von Kossa stain.ResultsOur results showed that the ELP–collagen scaffolds were suitable substrates for cell culture that allowed MC3T3-E1 pre-osteoblast cell attachment, differentiation, and subsequent mineralization over a period of 3 weeks. The ELP–collagen scaffolds displayed equivalent biocompatibility and cell-interacting properties to those of the neat collagen scaffolds.SignificanceThe novel ELP–collagen composite material may have future implications as a scaffold material for bone tissue engineering applications, for example, the treatment of alveolar bone loss.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dental Materials - Volume 29, Issue 2, February 2013, Pages 211–220
نویسندگان
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