Assessment of transfection by using cyanophycin and polyethylenimine cross-link with different cross-linking reagents

碩士 === 國立臺灣科技大學 === 化學工程系 === 101 === Cyanopycin can be produced by recombinant Escherichia coli. It is a biodegradable polymer that consists of aspartic acid, arginine and lysine. The primary amine of lysine is easier to be chemically modified than the functional groups of arginine. In this study,...

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Main Authors: Wen-hsuan Chen, 陳文玄
Other Authors: Wen-chi Tseng
Format: Others
Language:zh-TW
Published: 2013
Online Access:http://ndltd.ncl.edu.tw/handle/32007716219036990631
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spelling ndltd-TW-101NTUS53421212016-03-21T04:28:04Z http://ndltd.ncl.edu.tw/handle/32007716219036990631 Assessment of transfection by using cyanophycin and polyethylenimine cross-link with different cross-linking reagents 不同交聯劑對藍藻蛋白與聚乙烯亞胺接合物轉染效率之評估 Wen-hsuan Chen 陳文玄 碩士 國立臺灣科技大學 化學工程系 101 Cyanopycin can be produced by recombinant Escherichia coli. It is a biodegradable polymer that consists of aspartic acid, arginine and lysine. The primary amine of lysine is easier to be chemically modified than the functional groups of arginine. In this study, we utilized the primary amine of lysine and low molecular weight polyethylenimine (PEI) to be cross-linked by different cross-linking reagents (glutaraldehyde, glucose, and genipin). The cross-linking reagents can react with primary amines. We expect that the cross-linked products can be used to transfect cells effectively. By DNA electrophoresis, we found that the cross-linked products by glutaraldehyde, glucose, and genipin have the ability to encapsulate DNA. We further transfected mammalian cell to examine the expression of green fluorescent protein. The results of transfection of Chinese Hamster Ovary (CHO) cells were observed under a fluorescent microscope. The cross-linked products by glucose resulted in a higher expression level of green fluorescent protein in comparisons with the other products by glutaraldehyde and genipin. However, the transfection efficiencies of those cross-linked products are not as good as that of high molecular weight PEI. The MTT assay was used to investigate the cellular viability after transfection. The results also showed that the cross-linked products by glucose are nontoxic. Wen-chi Tseng 曾文祺 2013 學位論文 ; thesis 77 zh-TW
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language zh-TW
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sources NDLTD
description 碩士 === 國立臺灣科技大學 === 化學工程系 === 101 === Cyanopycin can be produced by recombinant Escherichia coli. It is a biodegradable polymer that consists of aspartic acid, arginine and lysine. The primary amine of lysine is easier to be chemically modified than the functional groups of arginine. In this study, we utilized the primary amine of lysine and low molecular weight polyethylenimine (PEI) to be cross-linked by different cross-linking reagents (glutaraldehyde, glucose, and genipin). The cross-linking reagents can react with primary amines. We expect that the cross-linked products can be used to transfect cells effectively. By DNA electrophoresis, we found that the cross-linked products by glutaraldehyde, glucose, and genipin have the ability to encapsulate DNA. We further transfected mammalian cell to examine the expression of green fluorescent protein. The results of transfection of Chinese Hamster Ovary (CHO) cells were observed under a fluorescent microscope. The cross-linked products by glucose resulted in a higher expression level of green fluorescent protein in comparisons with the other products by glutaraldehyde and genipin. However, the transfection efficiencies of those cross-linked products are not as good as that of high molecular weight PEI. The MTT assay was used to investigate the cellular viability after transfection. The results also showed that the cross-linked products by glucose are nontoxic.
author2 Wen-chi Tseng
author_facet Wen-chi Tseng
Wen-hsuan Chen
陳文玄
author Wen-hsuan Chen
陳文玄
spellingShingle Wen-hsuan Chen
陳文玄
Assessment of transfection by using cyanophycin and polyethylenimine cross-link with different cross-linking reagents
author_sort Wen-hsuan Chen
title Assessment of transfection by using cyanophycin and polyethylenimine cross-link with different cross-linking reagents
title_short Assessment of transfection by using cyanophycin and polyethylenimine cross-link with different cross-linking reagents
title_full Assessment of transfection by using cyanophycin and polyethylenimine cross-link with different cross-linking reagents
title_fullStr Assessment of transfection by using cyanophycin and polyethylenimine cross-link with different cross-linking reagents
title_full_unstemmed Assessment of transfection by using cyanophycin and polyethylenimine cross-link with different cross-linking reagents
title_sort assessment of transfection by using cyanophycin and polyethylenimine cross-link with different cross-linking reagents
publishDate 2013
url http://ndltd.ncl.edu.tw/handle/32007716219036990631
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