Abstract：
:This work assesses the effect of chemical induction with isopropyl β-D-1-thiogalactopyranoside (IPTG) on the expression of enhanced green fluorescent protein (eGFP) by planktonic and biofilm cells of Escherichia coli JM109(DE3) transformed with a plasmid containing a T7 promoter. It was shown that induction negatively affected the growth and viability of planktonic cultures, and eGFP production did not increase. Heterologous protein production was not limited by gene dosage or by transcriptional activity. Results suggest that plasmid maintenance at high copy number imposes a metabolic burden that precludes high level expression of the heterologous protein. In biofilm cells, the inducer avoided the overall decrease in the amount of expressed eGFP, although this was not correlated with the gene dosage. Higher specific production levels were always attained with biofilm cells and it seems that while induction of biofilm cells shifts their metabolism towards the maintenance of heterologous protein concentration, in planktonic cells the cellular resources are directed towards plasmid replication and growth.
journal_name
Int J Mol Scijournal_title
International journal of molecular sciencesauthors
Gomes L,Monteiro G,Mergulhão Fdoi
10.3390/ijms21020576subject
Has Abstractpub_date
2020-01-16 00:00:00issue
2issn
1422-0067pii
ijms21020576journal_volume
21pub_type
杂志文章abstract：:Wrist osteoarthritis (OA) is one of the most common conditions encountered by hand surgeons with limited efficacy of non-surgical treatments. The purpose of this study is to describe the Platelet-Rich Plasma (PRP) mixed-microfat biological characteristics of an experimental Advanced Therapy Medicinal Product (ATMP) ne...
journal_title：International journal of molecular sciences
pub_type： 临床试验,杂志文章
doi：10.3390/ijms20051111
更新日期：2019-03-05 00:00:00
abstract：:Thyroid cancer incidence has increased worldwide; however, investigations of thyroid cancer-related factors as potential prognosis markers remain insufficient. Secreted proteins from the cancer secretome are regulators of several molecular mechanisms and are, thereby, ideal candidates for potential markers. We aimed t...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21249537
更新日期：2020-12-15 00:00:00
abstract：:Chenopodium quinoa Wild is a "pseudocereal" grain which attracts a lot of attention in the scientific community as it has a positive effect on health. Here, we investigate the presence of biologically active O-prenylated phenylpropanoids in the ethanol extract of commercially available quinoa seeds. We claim that 4'-G...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20133262
更新日期：2019-07-02 00:00:00
abstract：:MicroRNAs (miRNAs) are a class of noncoding small RNAs, which play a crucial role in post-transcriptional gene regulation. Recently, various reports revealed that miRNAs could be transmitted between species to mediate cross-kingdom regulation by integrating into a specific target gene-mediated regulatory pathway to ex...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms19072007
更新日期：2018-07-10 00:00:00
abstract：:Gene fusions have a very important role in the study of cancer development. In this regard, predicting the probability of protein fusion transcripts of developing into a cancer is a very challenging and yet not fully explored research problem. To this date, all the available approaches in literature try to explain the...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20071645
更新日期：2019-04-02 00:00:00
abstract：:The challenge of effectively delivering therapeutic agents to brain has led to an entire field of active research devoted to overcome the blood brain barrier (BBB) and efficiently deliver drugs to brain. This review focusses on exploring the facets of a novel platform designed for the delivery of drugs to brain. The p...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms17060806
更新日期：2016-05-25 00:00:00
abstract：:High-dose human recombinant erythropoietin (rEPO) is a promising potential neuroprotective treatment in preterm and full-term neonates with hypoxic-ischemic encephalopathy (HIE). There are limited data on the pharmacokinetics of high-dose rEPO in neonates. We examined the effects of body weight, gestation age, global ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21093042
更新日期：2020-04-25 00:00:00
abstract：:Aging is a physiologic/pathologic process characterized by a progressive impairment of cellular functions, supported by the alterations of several molecular pathways, leading to an increased cell susceptibility to injury. This deterioration is the primary risk factor for several major human pathologies. Numerous cellu...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms20112774
更新日期：2019-06-06 00:00:00
abstract：:Benzo[a]pyrene (B[a]P), a polycyclic aromatic hydrocarbon, is a group 1 carcinogen that introduces mutagenic DNA adducts into the genome. In this study, we investigated the molecular mechanisms underlying the involvement of silymarin in the reduction of DNA adduct formation by B[a]P-7,8-dihydrodiol-9,10-epoxide (BPDE)...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21072369
更新日期：2020-03-30 00:00:00
abstract：:Ultraviolet radiation (UV) is a major causative factor of DNA damage, inflammatory responses, reactive oxygen species (ROS) generation and a turnover of various cutaneous lesions resulting in skin photoaging. The purpose of this study is to investigate the protective effect of protocatechuic aldehyde (PA), which is a ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21134619
更新日期：2020-06-29 00:00:00
abstract：BACKGROUND:Gadolinium chloride (GdCl3) has been reported to attenuate liver injury caused by a variety of toxicants. Gap junctional intercellular communication (GJIC) is thought to be essential in controlling liver homeostasis and pathology. Here we evaluate the effects of GdCl3 on functional GJIC and connexin expressi...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20153748
更新日期：2019-07-31 00:00:00
abstract：:The key proteins responsible for hormone synthesis in the thyroid are glycosylated. Oligosaccharides strongly affect the function of glycosylated proteins. Both thyroid-stimulating hormone (TSH) secreted by the pituitary gland and TSH receptors on the surface of thyrocytes contain N-glycans, which are crucial to their...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms19092792
更新日期：2018-09-17 00:00:00
abstract：:Phenolic compounds are responsible of the nutritional and sensory quality of extra-virgin olive oil (EVOO). The composition of phenolic compounds in EVOO is related to the initial content of phenolic compounds in the olive-fruit tissues and the activity of enzymes acting on these compounds during the industrial proces...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms17030337
更新日期：2016-03-04 00:00:00
abstract：:Colorectal cancer (CRC) is a highly prevailing cancer and the fourth leading cause of cancer mortality worldwide. Aberrant expression of antiapoptotic BCL-2 family proteins is closely linked to neoplastic progression and chemoresistance. Obatoclax is a clinically developed drug, which binds antiapoptotic BCL-2, BCL-xL...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21051773
更新日期：2020-03-05 00:00:00
abstract：:Over the years, anthropogenic factors have led to cadmium (Cd) accumulation in the environment causing various health problems in humans. Although Cd is not a Fenton-like metal, it induces oxidative stress in various animal models via indirect mechanisms. The degree of Cd-induced oxidative stress depends on the dose, ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms14036116
更新日期：2013-03-18 00:00:00
abstract：:Barley (Hordeum vulgare L.) is an important cereal crop grown for both the feed and malting industries. The allelic dwarfing gene sdw1/denso has been used throughout the world to develop commercial barley varieties. Proteomic analysis offers a new approach to identify a broad spectrum of genes that are expressed in th...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms130810410
更新日期：2012-01-01 00:00:00
abstract：:In salt-sensitive hypertension, reactive oxygen species (ROS) play a major role in the progression of renal disease partly through the activation of the mineralocorticoid receptor (MR). We have previously demonstrated that urinary vanin-1 is an early biomarker of oxidative renal tubular injury. However, it remains unk...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20184481
更新日期：2019-09-11 00:00:00
abstract：:Antibacterial peptides (APMs) are a new type of antibacterial substance. The relationship between their structure and function remains indistinct; in particular, there is a lack of a definitive and fixed template for designing new antimicrobial peptides. Previous studies have shown that porcine Protegrin-1 (PG-1) exhi...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20163954
更新日期：2019-08-14 00:00:00
abstract：:Molecular imprinted polymers (MIP) are considered one of the most promising selective and novel separation methods for removal phenolic compound in wastewater treatment. MIP are crosslinked polymeric materials that exhibit high binding capacity and selectivity towards a target molecule (template), purposely present du...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms10010354
更新日期：2009-01-01 00:00:00
abstract：:Previously, we developed a novel microRNA (miRNA) delivery system based on bacteriophage MS2 virus-like particles (MS2 VLPs). In this current study, we used this system to transport miR-146a into human peripheral blood mononuclear cells (PBMCs), and demonstrated the inhibition of osteoclastogenesis in precursors. Two ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms16048337
更新日期：2015-04-14 00:00:00
abstract：:Alzheimer's disease (AD) is characterized by extracellular accumulation of amyloid-β peptide (Aβ), generated by proteolytic processing of the amyloid precursor protein (APP) by β- and γ-secretase. Aβ generation is inhibited when the initial ectodomain shedding is caused by α-secretase, cleaving APP within the Aβ domai...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms14035879
更新日期：2013-03-13 00:00:00
abstract：:Pollination is a crucial stage in plant reproductive process. The self-compatibility (SC) and self-incompatibility (SI) mechanisms determined the plant genetic diversity and species survival. D. chrysanthum is a highly valued ornamental and traditional herbal orchid in Asia but has been declared endangered. The sexual...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms18122496
更新日期：2017-11-23 00:00:00
abstract：:Protein phosphatase 5 (PP5) is a unique member of serine/threonine phosphatases which has been recognized in regulation of diverse cellular processes. A cDNA fragment encoding PP5 (EcPP5) was cloned and characterized from the cantharidin-producing blister beetle, E. chinensis. EcPP5 contains an open reading frame of 1...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms141224501
更新日期：2013-12-16 00:00:00
abstract：:To further investigate the regulation role of two chemokine genes CCL3 and CCL4 in chondrocytes in response to resistin, human primary chondrocytes and T/C-28a2 cells were cultured. The function of resistin on the chemokine genes, and the expression of C/EBPβ, NF-κB isoforms were tested using qPCR. The methods used to...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms151017242
更新日期：2014-09-26 00:00:00
abstract：:Soil salinization, which is primarily due to excessive Na+ levels, is a major abiotic stress adversely affecting plant growth and development. The Na+/H+ antiporter (NHX) is a transmembrane protein mediating the transport of Na+ or K+ and H+ across the membrane to modulate the ionic balance of plants in response to sa...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21207712
更新日期：2020-10-18 00:00:00
abstract：:It is an important but also a challenging analytical problem to understand the chemical composition and structure of prebiotic organic matter that is present in extraterrestrial materials. Its formation, evolution and content in the building blocks ("seeds") for more complex molecules, such as proteins and DNA, are ke...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms17040439
更新日期：2016-03-24 00:00:00
abstract：:Hibiscus aridicola (Malvaceae) is an endangered ornamental shrub endemic to the dry-hot valleys of Jinsha River in southwest China. Only four natural populations of H. aridicola exist in the wild according to our field investigation. It can be inferred that H. aridicola is facing a very high risk of extinction in the ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms12095698
更新日期：2011-01-01 00:00:00
abstract：:Pterosins are abundant in ferns, and pterosin A was considered a novel activator of adenosine monophosphate-activated protein kinase, which is crucial for regulating blood glucose homeostasis. However, the distribution of pterosins in different species of ferns from various places in Taiwan is currently unclear. To ad...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms16022497
更新日期：2015-01-22 00:00:00
abstract：:Molecular defects in type 1 facioscapulohumeral muscular dystrophy (FSHD) are caused by a heterozygous contraction of the D4Z4 repeat array from 1 to 10 repeat units (RUs) on 4q35. This study compared (1) the phenotype and severity of FSHD1 between patients carrying 6-8 vs. 9-10 RUs, (2) the amount of methylation in d...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21062221
更新日期：2020-03-23 00:00:00
abstract：:Seed storability, defined as the ability to remain alive during storage, is an important agronomic and physiological characteristic, but the underlying genetic mechanism remains largely unclear. Here, we report quantitative trait loci (QTLs) analyses for seed storability using a high-density single nucleotide polymorp...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20184442
更新日期：2019-09-09 00:00:00
