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用于可靠保护/回收核酸的APTES锚定层状钛酸盐纳米片的高度稳定纳米容器

Highly Stable Nanocontainer of APTES-Anchored Layered Titanate Nanosheet for Reliable Protection/Recovery of Nucleic Acid.

作者信息

Kim Tae Woo, Kim In Young, Park Dae-Hwan, Choy Jin-Ho, Hwang Seong-Ju

机构信息

Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea.

出版信息

Sci Rep. 2016 Feb 24;6:21993. doi: 10.1038/srep21993.

DOI:10.1038/srep21993
PMID:26906340
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4764942/
Abstract

A universal technology for the encapsulative protection of unstable anionic species by highly stable layered metal oxide has been developed via the surface modification of a metal oxide nanosheet. The surface anchoring of (3-aminopropyl)triethoxysilane (APTES) on exfoliated titanate nanosheet yields a novel cationic metal oxide nanosheet, which can be universally used for the hybridization with various biological and inorganic anions. The encapsulation of deoxyribonucleic acid (DNA) in the cationic APTES-anchored titanate lattice makes possible the reliable long-term protection of DNA against enzymatic, chemical, and UV-vis light corrosions. The encapsulated DNA can be easily released from the titanate lattice via sonication, underscoring the functionality of the cationic APTES-anchored titanate nanosheet as a stable nanocontainer for DNA. The APTES-anchored titanate nanosheet can be also used as an efficient CO2 adsorbent and a versatile host material for various inorganic anions like polyoxometalates, leading to the synthesis of novel intercalative nanohybrids with unexplored properties and useful functionalities.

摘要

通过对金属氧化物纳米片进行表面改性，开发出一种利用高度稳定的层状金属氧化物对不稳定阴离子物种进行封装保护的通用技术。（3-氨丙基）三乙氧基硅烷（APTES）在剥离的钛酸酯纳米片上的表面锚定产生了一种新型阳离子金属氧化物纳米片，它可普遍用于与各种生物和无机阴离子杂交。将脱氧核糖核酸（DNA）封装在阳离子APTES锚定的钛酸酯晶格中，使得可靠地长期保护DNA免受酶、化学和紫外-可见光腐蚀成为可能。封装的DNA可通过超声处理轻松从钛酸酯晶格中释放出来，这突出了阳离子APTES锚定的钛酸酯纳米片作为DNA稳定纳米容器的功能。APTES锚定的钛酸酯纳米片还可用作高效的CO2吸附剂以及用于多金属氧酸盐等各种无机阴离子的通用主体材料，从而合成具有未探索性质和有用功能的新型插层纳米杂化物。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6650/4764942/7b6a1abdf19b/srep21993-f8.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6650/4764942/36db2040e9a7/srep21993-f6.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6650/4764942/7b6a1abdf19b/srep21993-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6650/4764942/8d5519fbab66/srep21993-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6650/4764942/23e833afc26e/srep21993-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6650/4764942/e513e1609ed8/srep21993-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6650/4764942/1ba2d69bc156/srep21993-f4.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6650/4764942/36db2040e9a7/srep21993-f6.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6650/4764942/7b6a1abdf19b/srep21993-f8.jpg

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