Collagen and heparan sulfate coatings differentially alter cell proliferation and attachment in vitro and in vivo.

Collagen and heparan sulfate coatings differentially alter cell proliferation and attachment in vitro and in vivo.
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胶原蛋白和硫酸乙酰肝素涂层在体外和体内不同地改变细胞增殖和附着。

DOI:
10.1142/s2339547816400033
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Dunn,JamesCY
Dunn,JamesCY
中科院分区:
--
文献类型:
--
作者:
Walthers,ChristopherM;Lyall,ChaseJ;Nazemi,AlirezaK;Rana,PuneetV;Dunn,JamesCY

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组织工程是一个创新的研究领域,应用于治疗肠道疾病。工程平滑肌需要致密的平滑肌组织和强大的血管化来支持收缩。本研究的目的是使用硫酸乙酰肝素(HS)和胶原涂层来增加平滑肌细胞(SMC)与支架的附着,并提高其植入后的存活率。体外培养2、4、6周后,体内培养2、6周后,评价在生物涂层支架上生长的SMC的成熟度和细胞数。还评估了植入物的血管化。胶原包被的支架增加了培养中SMC的附着、生长和成熟。2周后,HS涂层植入物增加了血管生成,与体外生长的HS涂层支架相比,有助于SMC存活和生长的增加。HS的血管生成作用可能对工程化肠平滑肌有用。
Tissue engineering is an innovative field of research applied to treat intestinal diseases. Engineered smooth muscle requires dense smooth muscle tissue and robust vascularization to support contraction. The purpose of this study was to use heparan sulfate (HS) and collagen coatings to increase the attachment of smooth muscle cells (SMCs) to scaffolds and improve their survival after implantation. SMCs grown on biologically coated scaffolds were evaluated for maturity and cell numbers after 2, 4 and 6 weeksin vitroand both 2 and 6 weeksin vivo. Implants were also assessed for vascularization. Collagen-coated scaffolds increased attachment, growth and maturity of SMCs in culture. HS-coated implants increased angiogenesis after 2 weeks, contributing to an increase in SMC survival and growth compared to HS-coated scaffolds grownin vitro. The angiogenic effects of HS may be useful for engineering intestinal smooth muscle.
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