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Noticiario genética


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Headline (Posted) Abstract
Encrypted messages in biological processes (20 Jun 2018) RNA modifications can encrypt the RNA code and are responsible for a very sophisticated control of RNA function. A new study shows that modified RNA bases have a great impact on the dynamics of gene expression from DNA to functional RNA.

Long-term estrogen therapy changes microbial activity in the gut (19 Jun 2018) Long-term therapy with estrogen and bazedoxifene alters the microbial composition and activity in the gut, affecting how estrogen is metabolized, a new study in mice found.

Blue gene regulation helps plants respond properly to light (19 Jun 2018) Researchers have discovered a process through which gene expression in plants is regulated by light. The study found that blue light triggers a shift in which portion of a gene is ultimately expressed.

Human immune response in the fruit fly (19 Jun 2018) Researchers have seen how both humans and fruit flies deploy a protein that a plays a critical role in their immune responses to invading bacteria. The discovery gives scientists evolutionary insight and a model organism with which to explore ways to boost the human immune system and create infection-fighting medicines.

Cells can trap viruses in protein cage to stop their spread, study reveals (19 Jun 2018) Researchers have discovered that cells can trap viruses in a protein cage to stop them from spreading to neighboring cells. The study reveals that the vaccinia virus can escape this trap by recruiting additional proteins to dismantle the cage and propel the virus out of the cell.

Factor important for ZIKA Virus host species restriction (18 Jun 2018) In 2013 and 2015, devastating outbreaks of ZIKA captured world attention. The virus is often transmitted from wild animals -- probably non-human primates -- via mosquitos to humans. This is the first comprehensive study to investigate which mammal species may host the ZIKA virus (ZIKV).

22,000-year-old panda from cave in Southern China belongs to distinct, long-lost lineage (18 Jun 2018)
Researchers who've analyzed ancient mitochondrial (mt)DNA isolated from a 22,000-year-old panda found in Cizhutuo Cave in the Guangxi Province of China -- a place where no pandas live today -- have revealed a new lineage of giant panda. The report shows that the ancient panda separated from present-day pandas 144,000 to 227,000 years ago, suggestin [+]

Devastating plant virus is revealed in atomic detail (18 Jun 2018) The complex 3D structure of one of the world's most lethal families of plant viruses has been revealed in unprecedented detail by scientists.

Scientists find potential disease-fighting 'warheads' hidden in bacteria (18 Jun 2018) A new study suggests scientists could build better drugs by learning from bacteria-derived molecules called thiocarboxylic acids.

Critical plant gene takes unexpected detour that could boost biofuel yields (15 Jun 2018)
For decades, biologists have believed a key enzyme in plants had one function -- produce amino acids, which are vital to plant survival and also essential to human diets. But it turns out this enzyme does more than advertised. Researchers ran a series of experiments on poplar plants that consistently revealed mutations in a structure of the life-su [+]

Microbe breaks 'universal' DNA rule by using two different translations (14 Jun 2018) DNA is often referred to as the blueprint for life, however scientists have for the first time discovered a microbe that uses two different translations of the DNA code at random. This unexpected finding breaks what was thought to be a universal rule, since the proteins from this microbe cannot be fully predicted from the DNA sequence.

Scientists have captured the elusive cell that can regenerate an entire flatworm (14 Jun 2018) Researchers have captured the one cell that is capable of regenerating an entire organism.

Non-coding DNA changes the genitals you're born with (14 Jun 2018) Male mice grow ovaries instead of testes if they are missing a small region of DNA that doesn't contain any genes -- a finding that could help explain disorders of sex development in humans, at least half of which have an unknown genetic cause.

Scientists discover biomarker for flu susceptibility (13 Jun 2018) Researchers have found a way to predict whether someone exposed to the flu virus is likely to become ill. They used a computational approach to pinpoint a blood-based genetic biomarker to determine an individual's susceptibility to the disease.

High-protein corn also resistant to parasitic weed (13 Jun 2018)
In sub-Saharan Africa, 20 to 80% of corn yields may be lost because of a semi-parasitic plant, Striga. In areas infested with Striga, farmers may even lose their entire crops. In a new study, researchers from southern Africa identified several varieties of corn resistant or tolerant to Striga. Importantly, these varieties also have improved nutriti [+]

Observing the cell's protein factories during self-assembly (13 Jun 2018) Researchers have produced snapshots of the 'protein factories' of the cell. Their findings could set us on the path towards a new class of antibiotics.

Network biology reveals pathogen targets in the model plant Arabidopsis thaliana (13 Jun 2018)
Using systems biology, researchers successfully identified previously unknown protein targets of plant pathogens in the flowering plant Arabidopsis thaliana, employing some of the same methods used to analyze social networks or biological networks. Their theoretical framework, they say, could help analyze other interactions between species to revea [+]

Simple chemical process that may have led to the origin of life on Earth (13 Jun 2018) Research has shown that reactions of alpha-hydroxy acids, similar to the alpha-amino acids that make up modern proteins, form large polymers easily under conditions presumed prevalent on early Earth. These alpha-hydroxy acid polymers may have aided in the formation of living systems on early Earth.

How 'gatekeepers' to a cell's nucleus let genetic instructions pass through (13 Jun 2018) Researchers have revealed how the human nuclear pore complex is involved in the flow of genetic information.

Finally, hope for a syphilis vaccine (12 Jun 2018)
Despite efforts to eradicate it, syphilis is on the rise. It is the second leading cause of stillbirth and miscarriage worldwide, and if left untreated it can cause strokes, dementia, and other neurological disease. Until now, most health agencies focused on treating infected people and their sex partners -- but new discoveries may make a vaccine p [+]

Making the oxygen we breathe, a photosynthesis mechanism exposed (11 Jun 2018) Oxygen photosynthesis has to be the greatest giver of life on Earth, and researchers have cracked yet another part of its complex and efficient chemistry. The more we know about it, the better we may be able to tweak photosynthesis, should it come under environmental duress, or should we need to boost crop productivity.

RNA changes aided sunflower's rapid evolutionary transformation, domestication (11 Jun 2018) A new study sheds light on the genetic mechanisms that allowed sunflowers to undergo a relatively rapid evolutionary transition from wild to domesticated in just over 5,000 years.

Researchers discover new type of stem cell state (11 Jun 2018) Biologists have discovered a new type of cell state that could help ensure one always has the ability to generate healthy fat cells.

A 'super' receptor that helps kill HIV infected cells (11 Jun 2018)
Researchers have discovered a unique set of 'super' receptors on immune cells capable of killing HIV across genetically diverse populations, making them a potential candidate for immunotherapy treatments. The researchers studied fifteen unique individuals who all had been infected with HIV, but have immune systems that protect them from AIDs progre [+]

Ten thousand bursting genes (08 Jun 2018) Scientists can now image the activity of 10,421 genes at once within individual cells, using a new technique.

The cartography of the nucleus (08 Jun 2018) A new technique creates maps of the folded structures of DNA, RNA, and proteins within the cellular nucleus, revealing elegant 'hubs' of organization.

How stem cells move (08 Jun 2018) Scientists have shown that human embryonic stem cells move by traveling back and forth in a line, much like ants moving along their trails.

Gene editing just got easier (08 Jun 2018) Researchers have made CRISPR technology more accessible and standardized by simplifying its complex implementation in a way that offers a broad platform for off-the shelf genome engineering.

Improved ape genome assemblies provide new insights into human evolution (07 Jun 2018)
Higher-quality assemblies of great ape genomes have now been generated without guidance of the human reference genome. They provide a clearer view of genetic differences that arose as humans diverged from other primates. The newest investigation offers the most comprehensive catalog of genetic variants that were gained or lost in different ape line [+]

Study identifies cellular 'death code' (07 Jun 2018) Dying cells generally have two options: go quietly, or go out with a bang.

Structural protein found essential to X chromosome inactivation (07 Jun 2018) A research team has identified the essential role of a structural protein in the silencing of the inactive X chromosome, a process that prevents both copies of the same gene from being expressed in female mammals, which carry two copies of the X chromosome.

Algal partner responds to climate-change stresses more strongly than coral host (07 Jun 2018) A new study puts a surprising twist into our understanding of how coral reefs react to ocean warming and acidification and may offer an early warning system for warmth-induced coral bleaching events.

In building the brain, cell pedigree matters (07 Jun 2018)
Research in mice shows that a protein made by the stem cells that give rise to neurons, but not by neurons themselves, is key to brain cells' ability to migrate during development and assume their proper positions This primordial protein acts by clinging onto thousands of sites in the genome, affecting the activity of multiple genes that regulate b [+]

Scientists see inner workings of enzyme telomerase, which plays key roles in aging, cancer (06 Jun 2018) Cancer, diseases related to aging and other illnesses are closely tied to an important enzyme called telomerase. Scientists report the deepest scientific understanding ever of this once-mysterious enzyme, whose core they can now see in near atomic resolution.

Newly discovered regulation process explains plant development (06 Jun 2018) Vascular tissue in plants distributes water and nutrients, thereby ensuring constant growth. Each newly developed cell needs to develop into its respective cell type in the vascular tissue. Botanists have now discovered how these cells know which cell type they should develop into.

Killing bacteria by silencing genes may be alternative to antibiotics (06 Jun 2018) A new approach to killing C. difficile that silences key bacterial genes while sparing other bacteria may provide a new way to treat the most common hospital-acquired bacterial infection in the United States, according to researchers.

Avoiding catastrophe: Yeast study reveals clues to maintaining genome size (06 Jun 2018) Study reveals an unexpected role for a well-known protein machinery in maintaining the correct DNA content with implications for cancer and other diseases.

For flickers, looks can be deceiving (06 Jun 2018) Despite the obvious visual differences between the Red-shafted Flicker of the west and the Yellow-shafted Flicker of the east, scientists have never before found genetic differences between them. A new study uses data from thousands of regions across the genome to distinguish these birds molecularly for the first time.

Simpler model gets to the point with proteins (06 Jun 2018) Researchers introduce a new computational framework to predict the details of protein folding and other dynamic molecular processes.

Dogs prefer to eat fat, and cats surprisingly tend toward carbs (05 Jun 2018) Dogs gravitate toward high-fat food, but cats pounce on carbohydrates with even greater enthusiasm, according to research into the dietary habits of America's two most popular pets.



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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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. 


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Nuestra capacidad de leer esta secuencia de nuestro genoma tiene todos los ingredientes de una paradoja filosófica. ¿Puede un ser inteligente comprender las instrucciones para hacerse a sí mismo?

John Sulston
Contributed by Amaiur Mendizabal Bengoa