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Noticiario genética


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Headline (Posted) Abstract
Why are there so many types of lizards? (23 Feb 2018)
Researchers have sequenced the complete genetic code -- the genome -- of several vertebrate species from Panama. They found that changes in genes involved in the interbrain (the site of the pineal gland and other endocrine glands), for color vision, hormones and the colorful dewlap that males bob to attract females, may contribute to the formation [+]

New link between gut bacteria and obesity (23 Feb 2018) Researchers have discovered a new link between gut bacteria and obesity. They found that certain amino acids in our blood can be connected to both obesity and the composition of the gut microbiome.

Mutation explains why some people are more vulnerable to viral brain infection (22 Feb 2018) Scientists identified mutations in a single gene that impair immunity to viruses in a region of the brain called the brain stem.

Sweet, bitter, fat: Genetics play a role in kids' snacking patterns (22 Feb 2018)
The types of snacks a child chooses could be linked to genetics, a new study found. The study investigated whether genetic variants in taste receptors related to sweet, fat and bitter tastes influence the snacks preschoolers choose and found nearly 80 per cent carried at least one of these genotypes that could predispose them to poor snacking habit [+]

New crystal structures reveal mysterious mechanism of gene regulation by the 'magic spot' (22 Feb 2018)
Using an innovative crystallization technique for studying 3D structures of gene transcription machinery, researchers revealed new insights into the long debated action of the 'magic spot' -- a molecule that controls gene expression in E. coli and many other bacteria when the bacteria are stressed. The study contributes to fundamental understanding [+]

DNA gets away: Scientists catch the rogue molecule that can trigger autoimmunity (22 Feb 2018) A research team has discovered the process -- and filmed the actual moment -- that can change the body's response to a dying cell. Importantly, what they call the 'Great Escape' moment may one day prove to be the crucial trigger for autoimmune diseases like arthritis.

Toenail fungus gives up sex to infect human hosts (22 Feb 2018)
The fungus that causes athlete's foot and other skin and toenail infections may have lost its ability to sexually reproduce as it adapted to grow on human hosts. The discovery that this species may be asexual -- and therefore nearly identical at the genetic level -- uncovers potential vulnerabilities that researchers could exploit in designing bett [+]

Scientists gain new insight on how antibodies interact with widespread respiratory virus (22 Feb 2018) Scientists have found and characterized the activity of four antibodies produced by the human immune system that target an important protein found in respiratory syncytial virus (RSV), according to new research.

Loops, loops, and more loops: This is how your DNA gets organized (22 Feb 2018)
A living cell is able to neatly package a big jumble of DNA into chromosomes while preparing for cell division. For over a century, scientists have been puzzled for decades on how the process works. Researchers now managed for the first time to isolate and film the process, and witnessed -- in real time -- how a single protein complex called conden [+]

Scientists create 'Evolutionwatch' for plants (21 Feb 2018) Using a hitchhiking weed, scientists reveal for the first time the mutation rate of a plant growing in the wild.

New interaction mechanism of proteins discovered (21 Feb 2018)
Researchers have discovered a previously unknown way in which proteins interact with one another and cells organize themselves. This new mechanism involves two fully unstructured proteins forming an ultra-high-affinity complex due to their opposite net charge. Proteins usually bind one another as a result of perfectly matching shapes in their three [+]

Cross-bred flies reveal new clues about how proteins are regulated (21 Feb 2018) The investigators used a technique called bottom-up proteomics (sometimes called shotgun proteomics) to reveal which proteins of each species were present in the hybrid flies.

Unexpected discovery about essential enzyme (21 Feb 2018) The enzyme that produces DNA building blocks plays an important role when cells divide. In a new study, researchers have discovered for the first time that the so-called master switch of the enzyme can change locations -- while still performing the same task.

Zika virus could help combat brain cancer (21 Feb 2018) Researchers show that infection by Zika caused death of cells from glioblastoma, the most common and aggressive kind of malignant brain tumor in adults. Scientists foresee the use of genetic engineering to neutralize Zika virus' infectious whilst preserving the viral particles which induce the death of tumoral cells.

Movement behavior of an anole species surprisingly dynamic (21 Feb 2018)
Anolis lizards have a thing or two to teach humans about love -- or in scientific speak, sexual selection -- at least when it comes to territoriality. Decades of behavioral research on the lizard's mating systems have resulted in near-unanimous agreement among scientists that the males maintain restricted, static territories to defend exclusive mat [+]

Evolution plays many tricks against large-scale bioproduction (21 Feb 2018) Ultra-deep DNA sequencing of thousands of cells uncovers many competing mechanisms of evolution as a threat to efficient scale-up of biobased chemicals production. Evolution plays an underestimated role in bioprocesses and limits yields much more than previously anticipated.

How bacteria manipulate plants (21 Feb 2018) Attack at the protein front: Xanthomonas bacteria cause diseases in tomato and pepper plants and inject harmful proteins into plant cells. Researchers have now discovered how one of these proteins manipulates the nutrient supply and hormonal balance of plants.

New weakness discovered in the sleeping sickness pathogen (21 Feb 2018)
Trypanosomes are single-celled parasites that cause diseases such as human African sleeping sickness and Nagana in animals. But they are also used in basic research as a model system to study fundamental biological questions. Researchers have now investigated how trypanosomes equally distribute their “power plant” to the daughter cells during cell [+]

Scientists poised to win the race against rust disease and beyond (20 Feb 2018) In a race to prevent and control rust disease epidemics, scientists have positioned themselves to better understand how rust fungi infect crops and evolve virulence.

Can you eat cells? Computer model predicts which organisms are capable of phagocytosis (20 Feb 2018)
Researchers have created a computational model capable of predicting whether or not organisms have the ability to 'eat' other cells through a process known as phagocytosis. The model may be a useful tool for large-scale microbe surveys and provides valuable insight into the evolution of complex life on Earth, challenging ideas put forward in recent [+]

Scientists find new antimalarial drug targets (20 Feb 2018)
Researchers have discovered crucial new processes that allow malaria parasites to escape red blood cells and infect other cells, offering potential new treatment targets. The team are already working with pharmaceutical companies to use this knowledge to develop new antimalarial drugs -- a critical step in the battle against drug-resistant malaria. [+]

Extreme-altitude birds evolved same trait via different mutations (20 Feb 2018) All extreme-altitude birds have evolved especially efficient systems for delivering scarce oxygen to their tissues. But a new study has found that these birds often evolved different blueprints for assembling the proteins -- hemoglobins -- that actually capture oxygen in the Himalayas and Andes.

Cracking the genetic code for complex traits in cattle (20 Feb 2018)
The global 1000 Bull Genomes Consortium identified the genetic basis for accurately predicting the complex trait of height across cattle and dairy breeds by pooling large genomic datasets and phenotypes collected from 58,000 cattle. The team validated their findings using the DNA of a wild auroch, the ancient ancestor to all cattle and dairy breeds [+]

In living color: Brightly-colored bacteria could be used to 'grow' paints and coatings (19 Feb 2018) Researchers have unlocked the genetic code behind some of the brightest and most vibrant colors in nature. The article is the first study of the genetics of structural color -- as seen in butterfly wings and peacock feathers -- and paves the way for genetic research in a variety of structurally colored organisms.

Pattern formation: The paradoxical role of turbulence (19 Feb 2018) The formation of self-organizing molecular patterns in cells is a critical component of many biological processes. Researchers have proposed a new theory to explain how such patterns emerge in complex natural systems.

Duplicate genes help animals resolve sexual conflict (19 Feb 2018) Duplicate copies of a gene shared by male and female fruit flies have evolved to resolve competing demands between the sexes. New genetic analysis describes how these copies have evolved separate male- and female-specific functions that are crucial to reproduction and fertility.

How the insulin receptor works (19 Feb 2018)
As we are approaching the 100th anniversary of the discovery of insulin, a wide array of its signaling pathways has been defined. However, the initial step in insulin action, i.e. the engagement with its cell-surface receptor and the resulting conformational change, which propagates across the plasma membrane to the intracellular module, remains po [+]

An enzyme's evolution from changing electric fields and resisting antibiotics (19 Feb 2018) Bacteria can produce enzymes that make them resistant to antibiotics; one example is the TEM beta-lactamase enzyme, which enables bacteria to develop a resistance to beta-lactam antibiotics, such as penicillin and cephalosporins. Researchers are now studying how an enzyme changes and becomes antibiotic-resistant.

Studying mitosis' structure to understand the inside of cancer cells (18 Feb 2018)
Cell division is an intricately choreographed ballet of proteins and molecules that divide the cell. During mitosis, microtubule-organizing centers assemble the spindle fibers that separate the copying chromosomes of DNA. While scientists are familiar with MTOCs' existence and the role they play in cell division, their actual physical structure rem [+]

Ras protein's role in spreading cancer (18 Feb 2018)
Protein systems make up the complex signaling pathways that control whether a cell divides or, in some cases, metastasizes. Ras proteins have long been the focus of cancer research because of their role as 'on/off switch' signaling pathways that control cell division and failure to die like healthy cells do. Now, a team of researchers has been able [+]

Using mutant bacteria to study how changes in membrane proteins affect cell functions (18 Feb 2018)

Scientists shed light on biological roots of individuality (16 Feb 2018) A new study illuminates the biology that guides behavior across different stages of life in worms, and suggests how variations in specific neuromodulators in the developing nervous system may lead to occasional variations.

Cells communicate in a dynamic code (16 Feb 2018) Scientists discover an unexpectedly dynamic vocabulary for the language of cellular communication.

New light shed on how plants get their nitrogen fix (16 Feb 2018)
Legumes are widely-consumed plants that use soil bacteria to obtain nitrogen through root nodulation. The process is energetically costly, and so legumes inhibit nodulation when soil nitrate is available. However, the mechanism that drives this inhibition is unknown. Researchers found that NRSYM1 is responsible for inhibiting nodulation in the pres [+]

Plant survival under high salinity: Plant cell wall sensing mechanism (15 Feb 2018) How cells sense their physical state and compensate for cell wall damage is poorly understood. But a new analysis of plants exposed to salt stress offers the first experimental evidence and molecular mechanisms showing how FERONIA is essential for the cellular responses that ensure survival under high salinity.

New CRISPR-Cas9 tool edits both RNA and DNA precisely, U-M team reports (15 Feb 2018) A tool that has already revolutionized disease research may soon get even better, thanks to an accidental discovery in the bacteria that cause many of the worst cases of meningitis.

Working in harmony: New insights into how packages of DNA orchestrate development (15 Feb 2018) New research illuminates aspects of how an early embryo, the product of fertilization of a female egg cell by a male sperm cell, can give rise to all the many cell types of the adult animal.

Scientists improve DNA transfer in gene therapy (15 Feb 2018)
Parkinson's disease, Huntington's disease, cystic fibrosis - these and many other fatal hereditary human diseases are genetically transmitted. Many cancers and cardiovascular diseases are also caused by genetic defects. Gene therapy is a promising possibility for the treatment of these diseases. With the help of genetically modified viruses, DNA is [+]

Cell biology: Scientists fill in a piece of the copper transport puzzle (14 Feb 2018) Researchers have identified the protein that carries copper into mitochondria, where copper is required for the functioning of the cell's energy conversion machinery. The discovery fills in a piece of the puzzle of how copper is distributed and used in the cell.

Study links fox domestication to gene activity in the pituitary gland (14 Feb 2018) A study of foxes offers new insights into the brain changes that occur in wild canids as they become more tame, researchers report. The study links fox domestication to changes in gene activity in the pituitary gland, a brain center that kicks out hormones to regulate various bodily functions, including the stress response.



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)


Blog Genes, genomas y otras genialidades (Prof. Ana Aguirre) Universidad del País Vasco

Este blog surge del interés de la autora por la formación de los estudiantes de Grado y de posgrado del ámbito de las Biociencias. Está concebido como un complemento formativo e informativo para estudiantes universitarios y para cualquier persona interesada por conocer de cerca los avances que suceden en el campo de la Genética, de la Biología Molecular y de otras áreas afines. 


Latest articles from Genetics (from Nature Journals)

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Curso de Genética - Grado Genética de la UAB
Plataforma Web 2.0 para la docencia universitaria
Prof. Antonio Barbadilla





Biological Sciences - Genetics: 394 journals.

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Padre Nuestro del Genetista

ADN nuestro que estás en el núcleo
santificada sea tu secuencia
venga a nosotros tu mensajero
háganse tus proteínas así en el citoplasma
como en el tubo de ensayo
danos nuestro fenotipo de cada día
y perdona nuestros trangénicos, así como
nosotros perdonamos tus mutaciones
No nos dejes caer en la senescencia celular
y líbranos del apoptosis.

Contributed by Laura Bogunyà Julià

"No hay un gen para el espíritu humano"
Jude Law
Gattaca (1997)
Contributed by Cristina Zamarreño Pastor