A team at Brown University found that Opsin3 is a protein closely related to rhodopsin, a protein that enables low-light vision. It regulates the amount of pigment produced in human skin, which is a determining factor in skin color. When humans spend their time in the sun without proper skin protection, the sun’s ultraviolet (UV) radiation sends a signal to the skin that produces more melanin – which prevents…
Author: biomart
The Application in Cancer Diagnosis of Exosomes
As we know, exosomes are small vesicles secreted by cells. Therefore, exosomes have the characteristics of donor cells and have certain cell specificity. In a large number of studies on exosomes in cancer patients, it has been found that exosomes secreted by cancer cells have characteristic molecules that can be used to distinguish other exosomes, and can be used as molecular markers for cancer diagnosis. At present, the common molecular…
Overview of Formation and Function of Exosomes as well as The Important Role in The Occurrence and Deterioration of Cancer
In the early 1980s, researchers discovered exocytosis in normal cells or tumor cells cultured in vitro, and cells secreted vesicle structures with cell membrane characteristics in their culture medium. In 1983, Johnstone found that in vitro cultured sheep stromal erythrocytes excreted small vesicle structures containing transferrin receptors during maturation, they named the small vesicle structure released by the cell as an exosomes. Early detection of exocrine-secreting cells is mainly…
New Study Reveals That Protein TRAIP is The Major Regulator of DNA Cross-linking Repair
In general, there are multiple pathways taken by cells to repair the same DNA damage, and the choice of repair pathway is important for maintaining genomic fidelity. Cross-linking between DNA strands covalently links two DNA strands together, thereby blocking DNA replication and transcription, chemotherapy takes effect by utilizing the cytotoxicity of these crosslinks. In Xenopus laevis egg extracts, the collision of the replication fork with the interstrand crosslinker initiated two…
Summary on The Status Quo and Future Development of Protein Modification Research
Protein post-translational modifications (PTM) include phosphorylation, methylation, acetylation etc. Protein expression is regulated by genomics and epigenetics, and after expression, it needs to be modified to different degrees to perform the required functions. PTM research is crucial. Here, let’s review the significant research in the field of protein modification in 2018. PNAS: Ubiquitin-like protein ubiquilin 2 (UBQLN2) regulates ALS/FTD-linked FUS-RNA complex kinetics and stress granule formation The ubiquitin-like protein…
New Study Reveals the Molecular Mechanism of Transcription Factor ‘Surveying’ The Genome of Cells
Transcription factors (TFs) are specific proteins that regulate gene expression, which can search for and bind specific regions in the entire genome to regulate gene expression. We all know that transcription factors not only bind to specific DNA sequences, but also bind non-specifically to any DNA strand. These non-specific associations can significantly increase the ability of transcription factors to find specific targets. However, researchers are not aware of how the…
New Study Published on Science Discovered A Gene that Can Promote Sleep While Getting Sick
Humans spend nearly a third of their time sleeping, but sleep is still one of the most enduring mysteries in biology. So far, scientists don’t know which genetic or molecular power is driving people to sleep. In a new study, researchers from the University of Pennsylvania’s Perelman School of Medicine discovered that a gene called Nemuri increased the need for sleep by studying more than 12,000 strains of fruit flies….
Revealing the Mechanism of Cancer Cells Spreading Through Hijacking of Immune Cells in vivo
In a new study, researchers from Queen Mary College, University of London, UK, discovered that molecules released from invasive skin cancer reprogram the healthy immune cells to help spread cancer. Targeting these molecules with inhibitory drugs may help prevent this invasive skin cancer from recurring after treatment. The results of the study were published in the Cell, entitled “Regional Activation of Myosin II in Cancer Cells Drives Tumor Progression via…
The Rhomboid Protease Breaks the “Cell Speed Limit” When Through the Cell Membrane
In a new study, researchers from Johns Hopkins University in the United States found that as a special protein that cleaves other proteins, rhomboid proteases can break the “cell speed limit” as they pass through the cell membrane. Rhomboid protease does this by distorting their surroundings, allowing them to slide quickly from one end of the cell membrane to the other. The results of the study were published in the…
New Breakthrough Developed A Technology that can Detect Hundreds of Proteins in A Single Blood Sample
Recently, in a research report published in the international journal Nature Nanotechnology, scientists from McGill University have developed a new technology that can detect hundreds of proteins in a single sample which is expected to be used as a fast, high-capacity and cost-effective tool for hospitals and research laboratories. Proteins in the blood provide researchers and clinicians with vital information that indicates the health of the body. Meanwhile, these…