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olivya

铁虫 (小有名气)

[求助] 含有RGD的生物活性材料在多大浓度对细胞相容性最好

本人,最近做一种接枝RGD的生物高分子材料,搜到一些文献说RGD的浓度并不是越大对细胞相容性越好的!但是并未说明什么浓度级别的RGD对细胞最好!找了几天的文献想弄清楚到底多大的RGD浓度铺在材料表面对成骨细胞是最有利的,但是并没什么结果,很多文章都是描述性的,根本没有出现具体RGD的含量或者浓度。有在方面有经验的吗?或者是否手头几篇类似polymer这种级别杂志上的文献,内容关于或谈到具体明确的浓度的RGD材料对细胞的生长最好,以便能做个参考,万分感谢!描述性的,宏观性的伤不起啊
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小硕
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genhunter

至尊木虫 (著名写手)

【答案】应助回帖

★ ★ ★ ★ ★ ★
感谢参与,应助指数 +1
olivya: 金币+5, 是啊!我想找找类似polymer 这种级别的杂志,看别人针对他的那种高分子材料采用了什么级别的浓度,效果如何的文章,一直没找到啊 2016-08-21 09:47:41
markar: 金币+1, 赞下! 2016-09-17 10:58:35
问的问题应该由实验证实,想猜测ᅳ下也应该借鉴自然生物高分子。http://www.doc88.com/p-28276623205.html
另外相容性与未修饰生物高分子材料也有关系吧?
离成功还差一点
2楼2016-08-21 08:56:27
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genhunter

至尊木虫 (著名写手)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
olivya: 金币+15, ★★★很有帮助, 还没来得急细看,先谢过你得帮助了 2016-08-22 23:17:26
markar: 金币+1, 应助指数+1, 很耐心啊! 2016-09-17 10:59:08
有两篇相关所值得细读

1. http://pubs.acs.org/doi/full/10.1021/bm500969d

2. Evaluation of different RGD ligand densities in the development of cell-based drug delivery systems

Article in Journal of Drug Targeting 23(9) · March 2015 with 16 Reads
DOI: 10.3109/1061186X.2015.1020428

1st Ane Garate
10.54 · Arthroscopic Surgery Unit, Vitoria-Gasteiz, Spain

2nd Edorta Santo
22.41 · Universidad del País Vasco / Euskal Herriko Unibertsitatea
+ 1

3rd José Luis Pedraz

Last Gorka Orive
44.16 · Universidad del País Vasco / Euskal Herriko Unibertsitatea
Show more authors
Abstract
The inclusion of the tripeptide Arg-Gly-Asp (RGD) in otherwise inert biomaterials employed for cell encapsulation has been observed to be an effective strategy to provide the immobilized cells with a more suitable microenvironment. The objective of this study was to determine the impact of different RGD densities on the behavior of baby hamster kidney (BHK) fibroblasts able to secrete vascular endothelial growth factor (VEGF) encapsulated in alginate microcapsules. Alginate was modified by varying the concentration of RGD peptides in the coupling reaction. After obtaining four different types of alginate, cells were encapsulated in alginate-poly-l-lysine-alginate (APA) microcapsules. The results obtained after viability, cell proliferation and VEGF secretion assays showed that the inclusion of RGD in alginate enhances the functionality of immobilized cells, obtaining the highest values with the intermediate RGD density. These results put in evidence that alginate modification influences the behavior of immobilized cells but even more that the employed density of the tripeptide is of crucial importance, obtaining in some cases even excessive activity of the encapsulated cells.
离成功还差一点
3楼2016-08-21 10:27:56
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