|本期目录/Table of Contents|

[1]石 成,吕 中*.氧化铜/蛋白质复合物的过氧化物酶及抗菌活性[J].武汉工程大学学报,2022,44(04):422-427.[doi:10.19843/j.cnki.CN42-1779/TQ.202201010]
 SHI Cheng,Lü Zhong*.Peroxidase and Antibacterial Activities of CuO-Proteincomposite[J].Journal of Wuhan Institute of Technology,2022,44(04):422-427.[doi:10.19843/j.cnki.CN42-1779/TQ.202201010]
点击复制

氧化铜/蛋白质复合物的过氧化物酶及抗菌活性(/HTML)
分享到:

《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
44
期数:
2022年04期
页码:
422-427
栏目:
生物与环境工程
出版日期:
2022-08-31

文章信息/Info

Title:
Peroxidase and Antibacterial Activities of CuO-Proteincomposite
文章编号:
1674 - 2869(2022)04 - 0422 - 06
作者:
石 成吕 中*
武汉工程大学环境生态与生物工程学院,湖北 武汉 430205
Author(s):
SHI ChengLü Zhong*
School of Environmental Ecology and Biological Engineering,Wuhan Institute of Technology,Wuhan 430205,China
关键词:
纳米酶氧化铜/牛血清白蛋白纳米复合物过氧化物酶活性抗菌
Keywords:
nanozymescopper oxide/bovine serum albumin nanocomposite peroxidase activityantibacteria
分类号:
TQ465.91
DOI:
10.19843/j.cnki.CN42-1779/TQ.202201010
文献标志码:
A
摘要:
细菌耐药性的日益严重使得新型抗菌剂的开发迫在眉睫,纳米酶的出现为抗菌剂的研究提供了新方向。利用水热法合成生物相容性好的氧化铜/牛血清白蛋白(CuO-BSA)纳米复合物,利用过氧化氢/3,3’,5,5’-四甲基联苯胺(H2O2/TMB)比色体系研究CuO-BSA复合物的过氧化物酶活性和酶促反应动力学,采用菌落计数法测定CuO-BSA对金黄色葡萄球菌的抗菌活性。结果显示所合成的CuO-BSA复合物具有过氧化物酶活性,在pH为4和温度为55 ℃时表现出最佳酶活性。该复合物对底物TMB和H2O2的米氏常数分别为0.29 mmol/L和43.19 mmol/L,对底物TMB的亲和力超过天然辣根过氧化物酶。CuO-BSA催化H2O2过程中产生了毒性更强的羟基自由基。100 μg/mL的CuO-BSA联合1 mmol/L的H2O2作用时,细菌存活率仅为3.1%。结果表明:本研究所合成的CuO-BSA纳米复合物具有较好的过氧化物酶活性,在抗菌方面具有应用潜能。
Abstract:
The development of new antibacterial agents is urgent due to the increasing drug-resistance of bacteria. The emergence of nanozymes provides a new direction for the research of antibacterial agents. Copper oxide/bovine serum albumin (CuO-BSA) nanocomposite with good biocompatibility was synthesized by hydrothermal method. The peroxidase activity and enzymatic reaction kinetics of CuO-BSA nanocomposite were studied by using hydrogen peroxide/3,3’,5,5’-tetramethylbenzidine (H2O2/TMB) colorimetric system.The antibacterial activity of CuO-BSA against Staphylococcus aureus was determined by the colony counting method. The results show that the synthesized CuO-BSA complex presents a peroxidase activity, and the best enzymatic activity is at pH 4 and 55 ℃. The Michaelis-Menten constants of the complex for the substrates TMB and H2O2 are 0.29 mmol/L and 43.19 mmol/L, respectively. The affinity of the complex for substrate TMB exceeds that of the natural horseradish peroxidase. The more toxic hydroxyl radical is generated during the catalysis of H2O2 by CuO-BSA. After treatment by 100 μg/mL CuO-BSA and 1 mmol/L H2O2, the bacterial survival rate is only 3.1%. The above results indicate that the CuO-BSA nanocomposites synthesized in this study have good peroxidase activity and potential application in the antibacterial field.

参考文献/References:

[1] HOFER U. The cost of antimicrobial resistance[J]. Nature Reviews Microbiology, 2019, 17 (1): 3.

[2] 马璐璐, 吴杰, 吕中. 纳米氧化铜与庆大霉素协同抗MRSA作用的研究[J].武汉工程大学学报, 2016, 38 (3): 226-230.
[3] 孙宇君, 吕中. 季铵盐类聚合物增强纳米抗菌材料性能的研究进展[J].武汉工程大学学报,2021,43 (1): 12-20.
[4] TAUBES G. The bacteria fight back[J]. Science, 2008, 321 (5887): 356-361.
[5] LIANG M M, YAN X Y. Nanozymes: from new concepts, mechanisms, and standards to applications[J]. Accounts of Chemical Research, 2019, 52 (8): 2190-2200.
[6] LI D D, GUO Q Q, DING L M, et al. Bimetallic CuCo2S4 nanozymes with enhanced peroxidase activity at neutral pH for combating burn infections[J]. ChemBioChem, 2020, 21 (18): 2620-2627.
[7] CAO C Y, ZHANG T B, YANG N, et al. POD nanozyme optimized by charge separation engineering for light/pH activated bacteria catalytic/photodynamic therapy[J]. Signal Transduction and Targeted Therapy, 2022, 7 (1): 86:1-9.
[8] WU R F, CHONG Y, FANG G,et al. Synthesis of Pt hollow nanodendrites with enhanced peroxidase-like activity against bacterial infections: implication for wound healing[J]. Advanced Functional Materials, 2018, 28 (28): 1801484:1-11.
[9] WANG Y, CHEN C, ZHANG D, et al. Bifunc-tionalized novel Co-V MMO nanowires: intrinsic oxidase and peroxidase like catalytic activities for antibacterial application[J]. Applied Catalysis B: Environmental, 2020, 261: 118256:1-11.
[10] NAZ S, AKHTAR J, CHAUDHARY M F, et al. Low-temperature synthesis of hierarchical structures of copper oxide and their superior biological activity[J]. IET Nanobiotechnology,2018,12(7): 968-972.
[11] CHEN W, CHEN J, LIU A L, et al. Peroxidase-like activity of cupric oxide nanoparticle[J]. ChemCatChem, 2011, 3 (7): 1151-1154.
[12] LIU Y J, ZHU G X, BAO C L, et al. Intrinsic peroxidase-like activity of porous CuO micro-/nanostructures with clean surface[J]. Chinese Journal of Chemistry, 2014, 32 (2): 151-156.
[13] CHEN M M, DING Y N, GAO Y, et al. N,N′-di-caboxy methyl perylene diimide (PDI) functionalized CuO nanocomposites with enhanced peroxidase-like activity and their application in visual biosensing of H2O2 and glucose[J]. RSC Advances, 2017, 7 (41): 25220-25228.
[14] HU C Y, YANG D P, XU K, et al. Ag@BSA core/shell microspheres as an electrochemical interface for sensitive detection of urinary retinal-binding protein[J]. Analytical Chemistry, 2012, 84 (23): 10324-10331.
[15] SUN Z C, YAO J J, WANG J D, et al. Room-temperature harvesting oxidase-mimicking enzymes with exogenous ROS generation in one step[J]. Inorganic Chemistry, 2022, 61 (2): 1169-1177.
[16] LIU Y L, ZHAO X J, YANG X X, et al. A nanosized metal-organic framework of Fe-MIL-88NH2 as a novel peroxidase mimic used for colorimetric detection of glucose[J]. Analyst, 2013, 138 (16): 4526-4531.
[17] 张艳. 氧化钼纳米抑菌材料设计及应用研究[D]. 青岛:青岛大学, 2021.
[18] GAO L Z, ZHUANG J, NIE L, et al. Intrinsic peroxidase-like activity of ferromagnetic nanoparticles[J]. Natute Nanotechnology,2007,2(9):577-583.
[19] CAI Q, LU S K, LIAO F, et al. Catalytic degradation of dye molecules and in situ SERS monitoring by peroxidase-like Au/CuS composite[J]. Nanoscale, 2014,6 (14): 8117-8123.
[20] LI T, LI J W, PANG Q, et al. Construction of microreactors for cascade reaction and their potential applications as antibacterial agents[J]. ACS Applied Materials & Interfaces, 2019, 11 (7): 6789-6795.
[21] MIAO H, ZHONG D, ZHOU Z N, et al. Papain-templated Cu nanoclusters: assaying and exhibiting dramatically antibacterial activity cooperating with H2O2 [J]. Nanoscale, 2015, 7 (45): 19066-19072.

相似文献/References:

备注/Memo

备注/Memo:
收稿日期:2022-01-23
基金项目:国家自然科学基金(21371139)
作者简介:石 成,硕士研究生。E-mail:[email protected]
*通讯作者:吕 中,博士,教授。E-mail:[email protected]
引文格式:石成,吕中. 氧化铜/蛋白质复合物的过氧化物酶及抗菌活性[J]. 武汉工程大学学报,2022,44(4):422-427.

更新日期/Last Update: 2022-08-25