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Noticiario genética


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Headline (Posted) Abstract
How cytoplasm 'feels' to a cell's components (22 Aug 2017) In a study that may guide drug design, researchers find organelles encounter varying levels of resistance, depending on their size and speed, as they move through a cell's cytoplasm.

Hormonal tug-of-war helps plant roots navigate their journey through the soil (22 Aug 2017) A sophisticated mechanism that allows plant roots to quickly respond to changes in soil conditions has been identified by an international research team.

How humans and their gut microbes may respond to plant hormones (22 Aug 2017)
A bowl of salad contains more than vitamins and minerals. Plant matter also includes remnants of the hormones plants produce to control how they grow, age, and manage water intake. Recently, scientists have reported that our gut microbes and cells may respond to these hormones and even produce similar molecules of their own. Researchers now explore [+]

Cell biology: Molecular volume control and perceiving mechanical stimuli (22 Aug 2017) About two years ago, scientists discovered that a certain class of receptors is capable of perceiving mechanical stimuli. Now they have begun to unravel the molecular mechanisms behind the discovery.

How a bacterium can live on methanol (22 Aug 2017) Researchers have identified all the genes required by a bacterium to use methanol as a food source. The results will help scientists advance the use of this resource in the field of biotechnology.

How plants turn off genes they don't need (21 Aug 2017) New research has identified small sequences in plant DNA that act as signposts for shutting off gene activity, directing the placement of proteins that silence gene expression.

Postnatal identification of Zika virus peptides from saliva (21 Aug 2017)
For the first time, researchers are using proteomics to examine proteins and peptides in saliva in order to accurately detect exposure to Zika virus. With 70 countries and territories reporting evidence of mosquito-borne Zika virus transmission, there is an increased need for a rapid and effective test for the virus. This study offers a new, quicke [+]

Alternative mode of bacterial quorum sensing (21 Aug 2017) Researchers have revealed the existence of a new quorum-sensing molecule that increases the virulence of the pathogenic bacterium Pseudomonas aeruginosa.

Materials scientists probe a protein's role in speeding Ebola's spread (21 Aug 2017) Scientists have pinpointed how a tiny protein seems to make the deadly Ebola virus particularly contagious.

Plants under heat stress must act surprisingly quickly to survive (21 Aug 2017) Heat-stressed plants not only need to produce new proteins to survive the stress, they need to make them right away, explain researchers.

Antarctic salt-loving microbes provide insights into evolution of viruses (21 Aug 2017)
Scientists studying microbes from some of the saltiest lakes in Antarctica have discovered a new way the microbes can share DNA that could help them grow and survive. The research, based on 18 months of water sampling in remote Antarctic locations, could throw light on the evolutionary history of viruses. The team discovered some of the microbes co [+]

Mechanism that impairs production of bovine embryos is revealed (21 Aug 2017) A longstanding obstacle to the market for bovine embryos is about to be removed. Researchers have described a hitherto unknown mechanism of lipid accumulation in oocytes that limits the success of in vitro production of bovine embryos.

How a non-coding RNA encourages cancer growth and metastasis (21 Aug 2017) A pro-tumor environment in the cell can encourage a gene to produce an alternative form of RNA that enables cancer to spread, report researchers.

Novel approach to track HIV infection (19 Aug 2017) Scientists used a novel live-cell fluorescent imaging system that allowed them for the first time to identify individual viral particles associated with HIV infection.

How immature cells grow up to be red blood cells (18 Aug 2017) Researchers have identified the mechanism behind red blood cell specialization and revealed that it is controlled by an enzyme called UBE2O. This finding could spark the development of new treatments for blood disorders and cancers.

Cheesemaking secret unlocked (18 Aug 2017) Researchers say their new knowledge on the inner workings of a bacterium has important implications for Australia's billion dollar cheese industry. The research group has explained the regulation of an enzyme in the bacterium Lactococcus, which is used as a starter culture in cheese production.

How whip-like cell appendages promote bodily fluid flow (18 Aug 2017)
Researchers have revealed that a molecule called Daple is essential for the correct orientation and coordinated beating of cilia on the surface of cells lining ventricles in the brain. Without Daple, the cilia develop a random arrangement and cannot produce a uniform flow of CSF. This in turn leads to a build-up of fluid, which is associated with s [+]

Mitochondria: A map of the cell's powerhouse (18 Aug 2017) Researchers are mapping the distribution of all proteins in mitochondria for the first time.

Histone 1, the guardian of genome stability (18 Aug 2017) Genomic instability is the main risk factor for tumor development in humans. Therefore understanding its origin and and exploring therapeutic targets is paramount. Histone 1 silences a region of the genome that causes irreparable DNA damage when translated and is lethal for the organism.

Gene variant activity is surprisingly variable between tissues (18 Aug 2017) Every tissue has its own pattern of active alleles, a large-scale study has found. Researchers were able to show that the differential allele activity is regulated by tissue-specific, regulatory DNA elements known as enhancers - a process that could also be involved in many diseases.

Gene that makes large, plump tomatoes identified (17 Aug 2017) Farmers can grow big, juicy tomatoes thanks to a mutation in the cell size regulator gene that occurred during the tomato domestication process.

Worm atlas profiles gene readouts in every cell type in the animal (17 Aug 2017)
A worm atlas has been built that profiles gene readouts for every kind of cell in the animal. This is the first time this type of comprehensive profiling for a multi-cellular organism has been created. The study was conducted at a larval stage of the roundworm C. elegans. The resource should have many uses, such as for studies on how genetic instru [+]

Super-photostable fluorescent labeling agent for super-resolution microscopy (17 Aug 2017)
Chemists have developed a super-photostable fluorescent dye, PhoxBright 430 (PB430), to visualize cellular ultrastructure by super resolution microscopy. The exceptional photostability of this new dye enables continuous STED imaging and together with its ability to fluorescently label proteins, PB430 demonstrates its use in the 3D construction and [+]

Bacteria stab amoebae with micro-daggers (17 Aug 2017) Researchers have discovered a type of bacteria that uses tiny daggers to prevent itself from being eaten by amoebae. The scientists also resolved the three-dimensional structure of the mechanism that allows the micro-daggers to be shot quickly.

Peroxisomes identified as 'fighters' in the battle against bacterial infections (17 Aug 2017) Peroxisomes are required for cells in the innate immune response to bacteria and fungi. Now scientists have found that peroxisomes are necessary for proper functioning of the innate immune system, the body's first line of defense against microorganisms.

Olfactory receptors that enable ants to smell and recognize workers, males, and their queen identified (17 Aug 2017)
To reign supreme in a colony, queen ants exude a special scent, or pheromone, on the waxy surface of their body that suppresses ovary development in their sisters, rendering the latter reproductively inactive workers that find food, nurse the young and protect the colony. Now, researchers have begun to unravel the molecular mechanisms behind how an [+]

Are stem cells the link between bacteria and cancer? (17 Aug 2017) A new mechanism of stomach gland regeneration reveals impact of Helicobacter pylori infection.

Study shows response to phytase varies among canola meal varieties (16 Aug 2017)
Canola meal, which is included in diets fed to pigs as a protein source, is also relatively high in phosphorus. However, most of the phosphorus in canola meal is bound to phytic acid, and microbial phytase is often added to diets to help make more phosphorus available to pigs. New research shows that not all kinds of canola meal respond equally to [+]

Problems with DNA replication can cause epigenetic changes that may be inherited for several generations (16 Aug 2017)
Scientists reveal that a fault in the process that copies DNA during cell division can cause epigenetic changes that may be inherited for up-to five generations. They also identified the cause of these epigenetic changes, which is related to the loss of a molecular mechanism in charge of silencing genes. Their results will change the way we think a [+]

Using barcodes to trace cell development (16 Aug 2017)
There are various concepts about how blood cells develop. However, they are based almost exclusively on experiments that solely reflect snapshots. Scientists now present a novel technique that captures the process in a dynamic way. Using a 'random generator,' the researchers label hematopoietic stem cells with genetic barcodes that enable them to t [+]

Modern genetic sequencing tools give clearer picture of how corals are related (16 Aug 2017) As corals face threats from ocean warming, a new study uses the latest genetic-sequencing tools to help unravel the relationships between three similar-looking corals.

Understanding how fish grow their hearts could help humans, professor finds (16 Aug 2017)
A protein that enables fish to change the size of their hearts based on the temperature of the water has now been identified by researchers. Understanding how fish are able to naturally add and remove collagen could lead to the development of treatment modalities for humans that enables a more controlled way for the heart to repair itself after a h [+]

New plant discovered in Shetland (16 Aug 2017) Scientists have discovered a new type of plant growing in Shetland -- with its evolution only having occurred in the last 200 years.

Understanding antibiotic resistance (15 Aug 2017)
Researchers have uncovered new insights into how bacteria respond to stress. When deprived of nutrients, strains of the bacterium Streptococcus pneumoniae mount a coordinated defense. When exposed to antibiotics, the bacterial response is highly disorganized, revealing the bacteria are far less familiar with antibiotics and do not recognize how to [+]

Gene that controls immune response to chronic viral infections identified (15 Aug 2017) A gene that helps some people and animals fend off persistent viral infections has now been discovered by a team of scientists.

How a nutrient, glutamine, can control gene programs in cells (15 Aug 2017)
Researchers show that an intracellular metabolite of glutamine, alpha-ketoglutarate, plays a role in regulating cellular differentiation programs by changing the DNA-binding patterns of the transcription factor CTCF and by altering genome interactions. As an added level of gene program control complexity, they have found that the genome's context n [+]

The lining of our intestines uses business process for fast digestion (15 Aug 2017) Every time we swallow food, cells that line the intestines must step up their activity in a sudden and dramatic manner. According to a new study, they rise to the challenge in the most economic fashion.

Epigenetic drugs show promise as antivirals (15 Aug 2017) Some epigenetic pharmaceuticals have the potential to be used as broad spectrum antivirals, according to a new study. The study demonstrated that histone methyltransferases EZH2/1 inhibitors, which are being used in cancer clinical trials, have activity against a variety of viruses, including herpes simplex virus (HSV).

'Acidic patch' regulates access to genetic information (15 Aug 2017) Researchers have uncovered new details about the way in which DNA, which is tightly packed into the cell's nucleus, is unwound so that it can be read and transcribed into proteins.

How head-on collisions of DNA protein machines stop replication (15 Aug 2017)
Head-on collisions between the protein machines that crawl along chromosomes can disrupt DNA replication and boost gene mutation rates. This may be one of the ways bacteria control their evolution by accelerating mutations in key genes when coping with new conditions. Some mutations may help bacteria survive hostile environments, resist antibiotics [+]



Noticias sobre Genética | EL PAÍS


Genética cotidiana (Prof. José Luis Micol Molina) 

Selección de noticias sobre genética aparecida en medios de comunicación español, y se añade un breve comentario. Se incluye un enlace a la noticia en español y cuando es posible, otro al artículo científico original en inglés. (Prof. José Luis Micol Molina, Catedrático de Genética, Universidad Miguel Hernández)


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