کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10228984 | 503 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The influence of substrate stiffness gradients on primary human dermal fibroblasts
ترجمه فارسی عنوان
تاثیر شیب سفتی سوبسترا بر فیبروبلاست های پوستی اولیه
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کلمات کلیدی
سختی سطح، مدول جوان، فیبروبلاست ها، چسبندگی سلولی و تکثیر آن، لایه لایه،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
چکیده انگلیسی
Materials mechanical properties are known to be an important regulator of cellular processes such as proliferation, differentiation and migration, and have seen increasing attention in recent years. At present, there are only few approaches where the mechanical properties of thin films can be controllably varied across an entire surface. In this work, we present a technique for controlled generation of gradients of surface elastic moduli involving a weak polyelectrolyte multilayer (PEM) system of approximately 100Â nm thickness and time dependent immersion in a solution of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) as a crosslinking agent. Uniform surface chemistry across the gradient and wettability was provided by the addition of a 10Â nm thick plasma polymer layer deposited from vapour of either allylamine or acrylic acid. We used the resultant stiffness gradients (0.5-110Â MPa in hydrated state) to investigate the adhesion, morphology and proliferation on human dermal fibroblasts (HDFs). We show that substrate mechanical properties strongly influence HDF cell fate. We also found that in the experimental range of surface properties used in this study, the surface stiffness was a stronger driving force to cells fate compared to chemistry and wettability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomaterials - Volume 34, Issue 21, July 2013, Pages 5070-5077
Journal: Biomaterials - Volume 34, Issue 21, July 2013, Pages 5070-5077
نویسندگان
Isabel Hopp, Andrew Michelmore, Louise E. Smith, David E. Robinson, Akash Bachhuka, Agnieszka Mierczynska, Krasimir Vasilev,