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Protein - Europe PMC

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Last Updated: 24 July 2022

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Development of a GFP biosensor reporter for the unfolded protein response-signaling pathway in plants: incorporation of the bZIP60 intron into the GFP gene.

When plants are exposed to stressful environments, it is vital to determine the release of the unfolded protein response in plants. The small cytoplasmically spliced intron from the bZIP60 locus was integrated into the 5' end of the GFP gene, resulting in the 35S: the bZIP60 intron:GFP construct. However, when UPR is enabled, the IRE1 kinase/ribonuclease splices this intron from the GFP mRNA and its translation proceeds, resulting in GFP fluorescence. Protoplasts from WT and PDI9 overexpressor plants treated with DTT exhibited significant increased GFP fluorescence relative to untreated protoplasts, indicating that the bZIP60 intron was spliced from the GFP mRNA in reaction to UPR activation. RT-PCR also reported the increased induction of PDI9 and bZIP60 mRNA levels in DTT-treated protoplasts relative to controls, which was explained by PCR.

Source link: https://europepmc.org/article/MED/35856340


PEGylation improves the therapeutic potential of dimerized translationally controlled tumor protein blocking peptide in ovalbumin-induced mouse model of airway inflammation.

A variety of allergic reactions are observed in mouse models, as well as the fact that dTCTP-binding peptide 2 attenuates allergic inflammation by targeting dTCTP. PEG-dTBP2 reduced proinflammatory cytokine IL-8 secretion in human bronchial cells by ten to 15% and increased plasma half-life by about 2. 5-fold in mice compared to unmodified dTBP2. Compared to dTBP2, this report found that PEG-dTBP2 has higher inhibitory activity against ovalbumin-induced airway inflammation in mice. PEG-dTBP2, when given first at 1 mg/kg, significantly reduced the migration of inflammatory cells and cytokines in the bronchoalveolar lavage fluids, as well as OVA-specific IgE levels in serum. In addition, the severity of goblet cell hyperplasia and mucus secretion in the PEG-dTBP2 group was significantly reduced in comparison to the control group. PEG-dTBP2 has been cited as a potential candidate drug for relieving allergic inflammation in these studies, according to these results.

Source link: https://europepmc.org/article/MED/35850571


Fatty acid binding protein 5 promotes the proliferation, migration, and invasion of hepatocellular carcinoma cells by degradation of Krüppel-like factor 9 mediated by miR-889-5p via cAMP-response element binding protein.

In several human malignancies, mounting evidence has shown that fatty acid binding protein 5 is commonly upregulated. However, the mechanisms relating to FABP5's involvement in hepatocellular carcinoma remain uncertain. In this research, we established the involvement of FABP5 and its downstream signaling molecules in HCC progression. In HCC, we first reported that FABP5 expression was banned. FABP5, according to a Mechanistic inquiry, could enhance cAMP-response element bind protein phosphorylation. A FABP5/CREB/MiR-889-5p/KLF9 axis for HCC progression has been established, according to our research, and we propose that blocking this primary signaling pathway may be a promising treatment option for HCC treatment.

Source link: https://europepmc.org/article/MED/35816613


Creutzfeldt-Jakob disease after COVID-19: infection-induced prion protein misfolding? A case report.

Creutzfeldt-Jakob disease is a rare, fatal disease with rapid progressive neurological deficits owing to the accumulation of a misfolded form of prion protein. Coronavirus disease 2019 is primarily respiratory disease caused by the acute respiratory syndrome coronavirus 2 (SARS2); many other medical disorders have been reported since COVID-19. We chronicle a young patient with CJD two months after mild COVID-19.

Source link: https://europepmc.org/article/MED/35786166


Value of combined detection of serum amyloid A, C-reactive protein and procalcitonin in differential diagnosis of respiratory tract infection in children of China.

The healthy subjects control group was selected at the same time as 100 healthy children admitted to the hospital for physical examination during the same period. Conclusions The serum SAA, PCT, and CRP values in the bacterial infection group and healthy children were higher than those in the non-bacterial infection group and healthy children, and the differences were statistically significant. The bacterial infection group's positive detection rates and combined detection rates of serum SAA, PCT, and CRP were higher than those in the non-bacterial infection group and the healthy subject's control group. Following traditional antibiotic therapy, serum SAA, PCT, and CR levels in children with bacterial infection were markedly reduced.

Source link: https://europepmc.org/article/MED/35775463


Slow alignment of GMO allergenicity regulations with science on protein digestibility.

The latest research on food allergy provides evidence for the dual allergen allergic response hypothesis, where sensitization to allergenic proteins is favored by dermal and inhalation exposures, and allergen exposure leads to allergies, and allergen tolerance is favored by gut exposures. Regulators and risk assessors have been asked to consider digestively stable proteins as a point of higher allergenic risk in lieu of decreasing gut exposure.

Source link: https://europepmc.org/article/MED/35762305


Orange protein, phytoene synthase regulator, has protein disulfide reductase activity.

Using dieosin glutathione disulfide as a substrate, we here attempted to determine enzymatic characteristics of OR, i. e. protein disulfide reductase activity of the Arabidopsis thaliana OR protein. 1. 2 u00d7 10 3 M -1 sec -1 u00d7 10 3 M -1 u00d7 10 3 M -1 s -1 -1. The AtOR portion with just the zinc -finger motif was found to be PDR active, with a reported K m of 12,632 nM, K cat of 11. 85 min -1, and K cat K m -1. We investigated the kinetic parameters of a fusion protein composed of the N-terminal region and AtTOR's Zn-finger motif in order to determine the presence of the N-terminal area of AtOR's N-terminal area. As a result, the fusion protein had lower K-m and K cat catalytic efficiencies as well as higher catalytic performance than that of just the Zn-finger motif portion, meaning that the N-terminal region of AtTOR might be more critical for substrate affinity and catalytic efficiency of PDR activity.

Source link: https://europepmc.org/article/MED/35699140


From the Wuhan-Hu-1 strain to the XD and XE variants: is targeting the SARS-CoV-2 spike protein still a pharmaceutically relevant option against COVID-19?

The SARS-CoV-2 genome has undergone several mutations since the discovery of the COVID-19 pandemic in December 2019. We explore the XE's latest news, Spike protein and the Mpro of the recently released SARS-CoV-2 variant XE's most recent news, as well as the closely related XD and XF ones, focusing on their effect on current treatments against COVID-19 and the design of new ones in this article.

Source link: https://europepmc.org/article/MED/35695095


Orally delivered rutin in lipid-based nano-formulation exerts strong antithrombotic effects by protein disulfide isomerase inhibition.

Protein disulfide isomerase plays a key role in the initial stage of thrombus formation, according to mounting evidence, encouraging the study of PDI inhibitors as novel anti-thrombotics. After oral gavage, NanoR provided increased solubility and dissolution of rutin, resulting in faster T max and higher C max. NanoR significantly reduced thrombin production and clot formation in mouse plasma, according to Ex vivo experiments. NanoR exhibited significant antithrombotic activity in direct current-induced arterial thrombosis model and ferric chloride-induced microvascular thrombosis model, in comparison to NaR. According to tail bleeding assay, global coagulation studies, and histological evaluation, NanoR also demonstrated good safety results according to tail bleeding assay, global coagulation tests, and histological analysis. Overall, our latest findings indicated that NanoR is a promising antithrombotic therapy with the potential for clinical translation.

Source link: https://europepmc.org/article/MED/35674505


Camel milk protein hydrosylate alleviates hepatic steatosis and hypertension in high fructose-fed rats.

In traditional medicine, Context Camel milk is used to treat diabetes mellitus hypertension and other metabolic disorders. This research compared the effects of intact camel milk protein extract to the ones afforded by camel milk protein hydrolysate's antisteatotic and antihypertensive effects in high fructose-fed rats to that of the intact camel milk protein hydrolysate. Material and methods Adult male Wistar rats were divided into six groups as 1 control, 2 ICM 1000 mg/kg, 3 CMH 15% in drinking water, 4 HF 15%, 5 HF 15%, 6 HF 15% + CMH 1000 mg/kg, 3 CMH 1000 mg/kg, 4 HF 15%, 4 HF 15%, and 6 HF 10% + CMH 1000 mg/kg, 3 CMH 1000 mg/kg, 5 HF 15%, and 6 HF 15% + CMH 1000 mg/kg In addition, both ICM and CMH reduced hepatic fat deposition in the hepatocytes and minimized hepatocyte damage. Discussion and conclusions The results of this research show that the use of CMH in a large population and clinical study to treat metabolic steatosis and hypertension are both beneficial.

Source link: https://europepmc.org/article/MED/35672152

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions