Abstract:
:Multidrug-resistant (MDR) bacterial infection still poses a serious threat to public health, therefore, effective and safe antimicrobial agents are urgently needed. In this study, recombinant bacteriocin BMP32 (BMP32r) prepared by the Escherichia coli expression system had a broad-spectrum antibacterial activity even against some MDR bacteria and its minimum inhibitory concentration ranged from 9.2 to 36.8 mg/L. Furthermore, BMP32r showed good stable performance in heat, pH and storage. Moreover, the scanning electron microscope and transmission electron microscope revealed that BMP32r killed indicator strains through cell wall destruction, pore formation, and the membrane permeability increasing which was proved by propidium iodide uptake investigation. The wound healing of an animal MDR S. aureus infected model was promoted by BMP32r, and the safety was verified by the cytotoxicity assay that the viability of HFF cells remained 87.3% in even when the concentration of BMP32r was as high as 147.2 mg/L. In addition, no abnormalities or damages to major organs was found in vivo assessments after treatment with BMP32r. In conclusion, BMP32r has great potential to be developed as a safe antimicrobial agent to treat MDR bacterial infections.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Qiao Z,Sun H,Zhou Q,Yi L,Wang X,Shan Y,Yi Y,Liu B,Zhou Y,Lü Xdoi
10.1016/j.ijbiomac.2020.07.192subject
Has Abstractpub_date
2020-12-01 00:00:00pages
845-854eissn
0141-8130issn
1879-0003pii
S0141-8130(20)33948-9journal_volume
164pub_type
杂志文章abstract::Thermococcus gammatolerans is anaerobic euryarchaeon which grows optimally at 88 °C and its genome encodes a family B DNA polymerase (Tga PolB). Herein, we cloned the gene of Tga PolB, expressed and purified the gene product, and characterized the enzyme biochemically. The recombinant Tga PolB can efficiently synthesi...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2020.03.204
更新日期:2020-08-01 00:00:00
abstract::Gold nanoparticles (AuNPs) were synthesized by reducing chloroauric acid with nontoxic and biodegradable carboxymethyl chitosan (CMC) as dual roles of reducing agent and stabilizer. Several CMC with different molecular parameters, i.e., degree of substitution (DS), substitution position, degree of deacetylation (DD) a...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.11.006
更新日期:2019-02-01 00:00:00
abstract::Silk is spun from the liquid precursor known as liquid silk secreted from the posterior part and stored in the silk gland lumen with occurrence of many momentary events. The liquid silk in the silk gland is transformed to the spun silk fibre. In this study the elucidation of the protein components of liquid silk from ...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2020.08.232
更新日期:2020-11-15 00:00:00
abstract::Bacillus licheniformis LMG 7559, which is capable of producing extracellular poly gamma- (glutamic acid) (PGA), was provided for the biopolymer synthesis. Using a modified PGA medium for PGA production, the isolated biopolymer, undergone dialysis process mainly for desalination and removal of other impurities. The bac...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2019.10.090
更新日期:2020-03-15 00:00:00
abstract::The pure chitosan nanofibrous membranes with average fiber diameter of 86±18, 114±17,164±28nm were successfully prepared by electrospinning. Batch adsorption experiments of using chitosan nanofibrous membranes as adsorbent to remove acid blue-113 were conducted. The adsorption capacity of 1377mg/g was achieved by the ...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2017.08.072
更新日期:2018-01-01 00:00:00
abstract::Ultraviolet radiation is a risk factor for cataractogenesis. It is believed that enhanced rates of lens opacification and cataract formation are the results of gradual loss of chaperone-like efficiency of α-crystallin upon exposure to UV light. To characterize chaperone-like activity of α-crystallin damaged by UV irra...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2014.10.060
更新日期:2015-02-01 00:00:00
abstract::There is ongoing quest to look for alternate sustainable and renewable biopolymers which can address the existing environmental issues. Bacterial cellulose could be one such option. Several organisms have been reported to produce bacterial cellulose. Among this, acetic acid bacteria (AAB) are reported to be one of the...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2020.04.078
更新日期:2020-08-01 00:00:00
abstract::In the present study, the antioxidant and antibacterial chitosan/tea polyphenols-silver nanoparticles composite film (CS/TP-AgNPs) was developed via a novel one-pot method. The TP was added to the CS film not only as the reducing agent of AgNPs but also as the cross-linking agent and antioxidant. The AgNPs and nanocom...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2019.11.093
更新日期:2020-07-15 00:00:00
abstract::Using samples previously degraded by autohydrolysis, it is possible to obtain valuable low-field 13C-n.m.r. spectra of samples of kappa/iota carrageenans at room temperature. Spectroscopy of samples extracted at different stages of autohydrolysis helps to determine the mechanism of the reaction and the presence of low...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/0141-8130(91)90056-z
更新日期:1991-04-01 00:00:00
abstract::Yeast enolase is stabilized by its natural cofactor Mg(2+). This stabilization is ascribed to the reduced subunit dissociation of the holoprotein. Nevertheless, how Mg(2+) alters the unfolding mechanism has yet to be fully characterized. Here, we investigate the role of Mg(2+) in the denaturation mechanism and unfoldi...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2011.07.021
更新日期:2011-12-01 00:00:00
abstract::To screen effective anti-duck hepatitis A virus (DHAV) drugs, we applied STMP-STPP method to prepare phosphorylated Codonopsis pilosula polysaccharide (pCPPS), the phosphorylation-modified product of Codonopsis pilosula polysaccharide (CPPS). The IR spectrum and field emission scanning electron microscope (FE-SEM) wer...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2016.10.002
更新日期:2017-01-01 00:00:00
abstract::Ultraviolet radiation, an effective sterilizing source, rapidly kills the causative organism (Mycobacterium leprae) of leprosy. But, the reasons behind this quick death are not clearly understood. Also, the impact of UV radiation on the antigen(s) which is/are responsible for the survival of this pathogen is still unk...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.07.151
更新日期:2018-11-01 00:00:00
abstract::Ordered porous sodium alginate/graphene oxide (SAGO) aerogel was fabricated by in situ crosslinking and freeze-drying method. GO, as reinforcing filler, can be easily incorporated with SA matrix by self-assembly via hydrogen bonding interaction. Compared with pure SA aerogel, the as-prepared SAGO exhibited excellent m...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2015.11.061
更新日期:2016-02-01 00:00:00
abstract::Classical lipases are well known for being enzymes hydrolysing triacylglycérols as substrate, except the porcine pancreatic lipase (PPL) which was able to hydrolyze phosphatidylcholine. Amino acid sequence alignments revealed that Valine 260 residue in PPL lid, postulated to be responsible for the PPL phospholipase ac...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2015.08.024
更新日期:2015-11-01 00:00:00
abstract::The holocellulase from Aspergillus niger SH3 was characterized and found to contain 125 proteins including cellulases (26), hemicellulases (21), chitinases (10), esterases (6), amylases (4) and hypothetical protein (32). The crude enzyme was immobilized on five different nanoparticles (NPs) via physical adsorption and...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2016.11.109
更新日期:2017-03-01 00:00:00
abstract::Two guest molecules (eugenol and (-)-menthol) were investigated on inclusion complex formation with water-soluble quaternized β-CD grafted with chitosan (QCD-g-CS). The inclusion complexes were prepared at varying mole ratios between eugenol or (-)-menthol and β-CD (substituted on QCD-g-CS) by a conventional shaking m...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2015.11.006
更新日期:2016-03-01 00:00:00
abstract::In this study, nanofibrous scaffolds were prepared from polyurethane and cellulose acetate using electrospinning. Reduced graphene oxide/silver nanocomposites, rGO/Ag, were also used into the mats due to the strong antibacterial activity of rGO/Ag nanocomposites. In order to prevent the agglomeration of silver nanopar...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2020.02.295
更新日期:2020-06-01 00:00:00
abstract::As a kind of biomass that exists widely in plants, lignin shows much diversity as a functional material. In order to improve the adsorption ability, lignin was chemically modified by 5-sulfosalicylic acid and then used to adsorb methylene blue (MB) and Pb2+ from aqueous solutions. The results showed that the 5-sulfosa...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.10.213
更新日期:2019-02-15 00:00:00
abstract::The study aimed to reveal the different mechanisms of delaying starch digestion by ECG, EGCG and Procyanidin based on the perspective of α-amylase-flavanol interaction and starch-flavanol interaction. The interaction characteristics of flavanols with α-amylase were studied from five aspects: enzyme inhibition, kinetic...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2021.01.070
更新日期:2021-01-15 00:00:00
abstract::In order to maximize value and minimize waste, carboxymethyl cellulose (CMC) and carboxymethyl starch (CMS) was synthesized via solvent method using cassava residue as raw material. The alkalization time, etherification temperature, the amounts of reactants and the alkali boiling pretreatment which influence the carbo...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2019.01.115
更新日期:2019-05-01 00:00:00
abstract::In this study, two sulfated polysaccharides (S-CP1-4 and S-CP1-8) from Cyclocarya paliurus were produced by chlorosulfonic acid-pyridine method. Hydrogen peroxide (H2O2) was used to develop an oxidative stress model in the mouse macrophage cell line RAW264.7. Effects of the two sulfated polysaccharides on H2O2-induced...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2015.06.031
更新日期:2015-09-01 00:00:00
abstract::Calcium alginate hydrogel dressing is an excellent hydrogel dressing because of its excellent absorption characteristics and tear-free pain. However, its application is limited by its poor mechanical properties and non-bacterial properties. Here, we reported a new biomimetic hydrogel dressing with good mechanical prop...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2019.12.046
更新日期:2020-01-15 00:00:00
abstract::Lung cancer, associated with the up-regulated epidermal growth factor receptor (EGFR) led to the development of EGFR targeted anticancer therapeutics. The biopolymeric nanoparticles form an outstanding system for the targeted delivery of therapeutic agents. The present work evaluated the in vitro effects of chitosan c...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2014.06.009
更新日期:2014-08-01 00:00:00
abstract::alpha-helices are the most common secondary structures in observed proteins. However, they are not always found in ideal helical conformation and they often exhibit structural distortions. Quantification of these irregularities become essential in understanding the packing of helices and therefore, their role in the f...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/0141-8130(96)01106-3
更新日期:1996-08-01 00:00:00
abstract::The so-called 'H-fragment' of insulin is an extremely amyloidogenic double chain peptide consisting of the N-terminal parts of A-chain and B-chain linked by a disulfide bond between Cys-7A and Cys-7B. Here, we conduct a detailed investigation of the self-association behavior of H-fragment monomers into amyloid-like fi...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2020.02.153
更新日期:2020-05-01 00:00:00
abstract::Autolytic activities were measured in cell walls prepared from the yeast Saccharomyces exiguus. Walls of yeast cells exhibited higher autolytic activities directed toward glucans at the exponential phase of growth when compared to cells at the stationary phase, while glucanase activities in the soluble extract fractio...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/s0141-8130(97)00034-2
更新日期:1997-08-01 00:00:00
abstract::Thin films of chitosan (CS) coated on glass substrates were used as support for the immobilization of nanostructures TiO2/ZnS via a mild chemical process followed by a hydrothermal treatment at 90 °C. The preparation route involved the coating of the CS film on the glass substrate followed by the deposition of a thin ...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2018.05.141
更新日期:2018-09-01 00:00:00
abstract::In the present study, high-methoxyl pectin (HMP) was extracted from Hylocereus polyrhizus peel's using physico-chemical process. In addition, the hypolipidemic activity of HMP was investigated at different concentration and time corresponding to its adsorption ability. FTIR and contact angle analysis were used to dete...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2019.03.143
更新日期:2019-08-01 00:00:00
abstract::Flammulina velutipes polysaccharides (FVP) can improve gut health through gut microbiota and metabolism regulation. In this study, the 28-days fed experiment was used to investigate gut microbime and metabolic profiling induced by FVP. After treatment, intestinal tissue section showed the higher villus height and vill...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章
doi:10.1016/j.ijbiomac.2020.11.085
更新日期:2021-01-15 00:00:00
abstract::Ionic liquids have shown their potential as a solvent media for many enzymatic reactions as well as protein preservation, because of their unusual characteristics. It is also observed that change in cation or anion alters the physiochemical properties of the ionic liquids, which in turn influence the enzymatic reactio...
journal_title:International journal of biological macromolecules
pub_type: 杂志文章,评审
doi:10.1016/j.ijbiomac.2012.06.020
更新日期:2012-11-01 00:00:00