EiF4E and Depression

A recent study about changes in the brain linked to depression paved the way for new therapies. Moreover, the study also revealed why a certain antidepressant drugs stop working in some people.

Scientists from the University of Edinburgh studied mice that were bred to have defects in their ability to activate a certain molecule, called eIF4E. And it turned out that those animals showed signs of depression, reduced levels of hormone serotonin and also disinterest in food.

Treatment with a commonly prescribed antidepressant called fluoxetine failed to produce a response in the mice. This suggests that activation of eIF4E is required for the beneficial antidepressant effects of fluoxetine, which belongs to a category of medicines called selective serotonin re-uptake inhibitors (SSRIs). (sciencedaily.com)

This, however, could help explain why some patients stop responding to SSRIS. Previous studies have shown the effect of eIF4E in regulating protein synthesis in the brain. And the defects of eIF4E are also linked to other neurological conditions. But it is the first time it has been found to be connected with depression.

Those findings, according to the scientists, could help develop novel therapy for depression, which are affecting increasing numbers of people worldwide.

Dr Christos Gkogkas, a Chancellor's Fellow in the University of Edinburgh's Center for Discovery Brain Sciences, stated: “Our investigation uncovers that changed protein synthesis through eIF4E is a key cellular process in the brain that can go amiss in depression. Imperatively it might clarify why a few people with depression wind up resistant to treatment with SSRIs. This information can enable us to plan another generation of antidepressants.”

Collected by Creative BioMart, a provider of quality recombinant proteins, gmp proteins, native proteins, etc. and custom protein services including Protein Function Prediction, Protein Ubiquitinylation, Protein Glycosylation Labeling, etc.

New Findings about IL-33 You May Want to Know

A team of researchers from the French Scientific Research Center and the National Institute of Health and Medical Research discovered that a protein acts like a sensor can detect asthma-inducing allergens in the respiratory tract. Their research, co-led by Corinne Cayrol and Jean-Philippe Girard, was recently published in Nature Immunology and has brought new breakthroughs in the treatment of allergic diseases.

What are the common features of mold, pollen, and wolfberry? Although they belong to three different organisms, they all can cause allergies in susceptible people. Although the composition varies greatly, they all contain enzymes called proteases.

The team found a human protein that reacts with environmental allergens: interleukin-33 (IL-33). When allergens enter the human respiratory tract, they release proteases that activate IL-33 to become extremely active. This triggers an allergic chain reaction.

At the same time, this mechanism has led to allergic reactions to various allergens. IL-33 can detect 14 different allergens, including environmental air (such as pollen, indoor aphids, fungal spores, etc.) and occupational asthma-related (like subtilisin found in detergents) allergens.

These findings are important because they find a direct relationship between genes and the environment. In fact, the gene encoding IL-33 is indeed one of the major genes that cause people to easily develop asthma. In addition, clinical trials targeting IL-33 are ongoing. Inhibiting the production of activated IL-33 after exposure to allergens may be an effective way to control severe allergic reactions in allergic patients.

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The Amaryllidaceae Alkaloid Helps Repress Cancer Cell Growth

Daffodil can quickly cure cancer? Scientists from the Laboratory of RNA Molecular Biology at the Liberal University School of Science and Cancer Research Center in Brussels, Belgium, conducted a preliminary exploration in this direction, and this study was published in Cell's Structure recently.

The study, led by Denis Lafontaine, extracted a natural anticancer compound from daffodil (Amaryllidaceae). They found that the compound is an alkaloid called tennis amine, which binds ribosomes. Ribosomes are nanodevices necessary for the survival of our cells because they synthesize all of our proteins. In order to maintain their own unrestricted growth, cancer cells rely on enhanced protein synthesis, so cancer cells are very sensitive to therapies that inhibit ribosome formation or inhibit ribosomal function.

In the new study, researchers also found that tennis amine can inhibit ribosome-forming proteins and therefore slow cancer cell growth. Peracetamol also inhibits the production of such nanodevices in the nucleus: the pressure on the nucleolus activates the anti-cancer watchdog pathway, leading to increased stability of the p53 protein, thereby eliminating cancer cells.

This study, for the first time, reveals the molecular mechanism of antitumor activity of daffodils, which has been used in folk medicine for hundreds of years. Pedigree is a member of a large group of natural therapeutic molecules: Many of the other alkaloids used in human care are extracted from plants such as morphine (potent analgesics), quinine (anti-malaria drugs), and ephedrine (anti-asthma Medicine) and so on.

In the near future, Denis Lafontaine's team will work with Veronique Mathieu's team to examine the effects of four Amaryllid alkaloids on ribosome formation and function. Their goal is to quickly find the most promising chemical framework, and then further develop anticancer drugs.

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JCI: Histone Protein Modifications May Regulate Human Glomerular Disease

During normal development, histone modifications control the fate of cells, whereas histone modification affects the process of cell dedifferentiation in the event of disease. In a recent study published in the international journals JCI, researchers from Canada decided to find out how dynamic changes in histone modifications can affect adult glomerular podocytes, which are usually at rest.

To do this, the researchers altered the inhibitory effect of H3K27me3 in podocytes and performed a series of analyzes. Adriamycin nephrotoxicity test and subtotal nephrectomy both showed that the level of H3K27me3 decreased after the removal of methyltransferase EZH2 with histone methylation in podocytes and the mice were susceptible to glomerular diseases. The researchers found that in podocytes H3K27me3 aggregates in the promoter region of Notch ligand Jag1, and inhibition of Jag1 by EZH2 knockdown or knockdown of EZH2 expression can promote podocyte dedifferentiation. In contrast, inhibition of the demethylase Jmjd3 and UTX increased the level of H3K27me3, decreased adriamycin nephrotoxicity experiments, subtotal nephrectomy, and diabetic-induced glomerular disease. In addition, the researchers analyzed glomerular podocytes in patients with focal segmental glomerulosclerosis and diabetic nephropathy and found that glomerular podocytes in these patients exhibited levels of H3K27me3 Decline and UTX levels increase. Similar to this observation, inhibition of Jmjd3 and UTX slows the progression of nephropathy in a mouse model of glomerular damage.

Collectively, these results indicate that chromatin modifications are not as stable as they appear to be at rest, and also undergo dynamic regulation, whereas epigenetic reprogramming or results that may improve glomerular disease.

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Creative BioMart to Expand Its Protein Glycosylation Labeling Service Capacity to Meet Rising Demands

Creative BioMart, a global leader in the supply of high quality protein products and efficient protein manufacturing techniques, today announced a major expansion of its Protein Glycosylation Labeling Service capacities as a response to rising customer needs and market demands for characterizing glycan structure and monitoring glycan profiles.

With years of experience accumulated, Creative BioMart provides accurate solutions for characterizing glycan structure and monitoring glycan profiles using mAb-Glyco Chip technology, LC/MS, liquid chromatography systems, and electrophoresis. Services in Creative BioMart include: Annotate N-linked glycosylation, Annotate O-linked glycosylation, Annotate C-linked glycosylation, Annotate glycationn, Glycan staining or labeling, Glycoprotein purification or enrichment and Glycoproteome and Glycome Analysis by Mass Spectrometry.

As Lectins can be used to detect and analyze glycoprotein function, Creative BioMart also provides services utilizing lectins, which include Glycoprotein identification, Glycoprotein purification/enrichment, Characterization of cell surface glycoconjugates, Glycosylation mutant generation, as well as Gtf and glycosidase activity analysis.

“With the customers’ needs for Protein Glycosylation Labeling increased, we are quite pleased to develop more qualified offerings concerning this with our current services quality assured. We must work hard for early results. Guaranteed by our advanced techniques, we do believe the day is no faraway to come.” Commented the chief marketing staff in Creative BioMart.

To know more detailed information about Protein Glycosylation Labeling Service in Creative BioMart, you can visit http://www.creativebiomart.net/Protein-Glycosylation-Labeling-Service.htm.

About Creative BioMart

Starting from a small supplier of proteins and enzymes for academic institutes and biotech companies, Creative BioMart has always been focusing on developing high quality protein products including recombinant proteins, GMP proteins, native proteins, etc. and efficient protein manufacturing techniques. Over the past decade, our products and services are proved to have served our customers well and our brand has become one of the most trustworthy in the market.

Engineered Proteins Created to Treat Obesity

According to the material provided by American Association for the Advancement of Science, Scientists here have created engineered proteins that brought down body weight, bloodstream insulin, and cholesterol levels in obese mice, rats and primates. These findings, to some extent, pave the way for earnestly required alternatives to bariatric surgery for treating obesity in humans-the rates of which have almost tripled worldwide since 1975.

In view of the perception that obese mice, rats, and humans all had raised serum concentrations of a protein named GDF15 in contrast with learn controls, Yumei Xiong and partners set out to create treatments got from the molecule. In various mouse models of diet-induced and genetic obesity, conveyance of the GDF15 gene reduced body weights, food intake, and serum insulin levels in the animals.

Since GDF15 has a short plasma half-life and is hard to deliver in substantial quantities, the researchers produced two distinctive fusion proteins that were more stable in the circulation and prompted higher yields. Both fusion proteins adequately diminished body weights for obese mice and cynomolgus monkeys.

What’s more interesting is that, Xiong, together with her colleagues, additionally demonstrated that the GDF15 regimen changed food preferences in mice—driving the animals to pick lower calorie chow when offered a decision between standard food and an additional condensed-milk diet.

The authors established that GDF15 enacted a population of nerve cells called AP neurons that make up a portion of the gut-brain axis, yet take not of that further investigations to identify the protein’s cellular receptor are required as potential therapeutics advance toward the clinic.

As a quality protein products supplier, Creative  BioMart not only provides GDF15 proteins, but also GDF11 proteins, and other protein products and protein-related services to assist scientists with their research.

Assay Kits Supplier—Creative BioMart

Assay kits, used in life science research, drug discovery & development as well as environmental monitoring in a broad range of applications such as studying disease pathways, or finding potential drug candidates or evaluating biopharmaceutical production processes.

With years of experience and expertise, Creative BioMart now offers thousands of assay kits in a variety of formats, including enzyme activity, inhibitor screening, epigenitic, apoptosis, cell damage, cell proliferation and cytotoxicity, cell signing, metabolism and other detections that have been exhaustively tested for superior quality.

These assays are regarded quite useful tools for the measuring of enzyme activity, monitoring of signal pathway activity, detecting and quantifying of cellular processes, for example cell death, cell viability/proliferation, or metabolic reaction to study changes in gene expression and to screen small molecule inhibitors.

Assay kits in Creative BioMart are ready-to-use and provide all reagents in necessity, directions, plates and analysis protocols to help its customers to quickly get exact and reproducible outcomes. With Creative BioMart’s assay kits, customers can get profoundly sensitive, precise, and precise results over a wide dynamic range with quick and efficient processing.

Assay kits in Creative BioMart include but not limited to: activity kits, metabolism kits, epigenetic kits, cellular kits, signaling kits, detection kits, etc.

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