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Noticiario genética


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Headline (Posted) Abstract
Protein involved in nematode stress response identified (13 Dec 2018)
When humans experience stress, their inner turmoil may not be apparent to an outside observer. But many animals deal with stressful circumstances -- overcrowded conditions, not enough food -- by completely remodeling their bodies. These stress-induced forms, whether they offer a protective covering or more camouflaged coloration, can better withsta [+]

To repair DNA damage, plants need good contractors (13 Dec 2018)
Researchers report which genes are turned on or off, and in which order, to orchestrate the cellular processes required to protect and repair the genome in response to DNA damage. The research reveals the genetic framework controlling a complex biological process that has broad implications for understanding how plants in particular, and organisms [+]

Novel mechanisms of dengue and Zika virus infections and link to microcephaly (13 Dec 2018) New insights into how dengue and Zika viruses cause disease reveal strategies the viruses use to successfully infect their host and a link to microcephaly.

Drug targets for Ebola, Dengue, and Zika viruses found in lab study (13 Dec 2018)
No drugs are currently available to treat Ebola, Dengue, or Zika viruses, which infect millions of people every year and result in severe illness, birth defects, and even death. Scientists may finally change that. They identified key ways the three viruses hijack the body's cells, and they found at least one potential drug that can disrupt this pro [+]

New techniques better determine how ancient viral DNA influences human genes (13 Dec 2018) New laboratory techniques can identify which of our genes are influenced by DNA snippets that are left behind in our genetic code by viruses.

Tale of two trees: New web tool estimates gene trees with ease (13 Dec 2018) Scientists introduce ORTHOSCOPE, a new web-based tool capable of inferring gene function, estimating gene trees and identifying sets of ancestral genes in just minutes.

Clearest view ever of cell membrane yields unexpected structure, research possibilities (12 Dec 2018) Scientists have gained the clearest view yet of a patch of cell membrane and its components, revealing unexpected structures and opening up new possibilities for pharmaceutical research.

Biologists shed new light on an old question (12 Dec 2018)
For nearly 100 years biologists have argued about how exactly natural selection can possibly work. If nature selects the individuals with the best genes then why aren't all organisms the same? What maintains the genetic variation that natural selection acts upon, the genetic variation that has ultimately led to the spectacular diversity of life on [+]

Rice plants that grow as clones from seed (12 Dec 2018) Plant biologists have discovered a way to make crop plants replicate through seeds as clones. The discovery, long sought by plant breeders and geneticists, could make it easier to propagate high-yielding, disease-resistant or climate-tolerant crops and make them available to the world's farmers.

Researchers reverse engineer way pine trees produce green chemicals worth billions (12 Dec 2018) Researchers have reverse engineered the way a pine tree produces a resin, which could serve as an environmentally friendly alternative to a range of fossil-fuel based products worth billions of dollars.

Transformed: The plant whose sex life fascinated Charles Darwin (11 Dec 2018) Researchers have genetically transformed the Common Primrose (Primula vulgaris) for the first time in a development that could shed light on one of the plant world's most renowned reproductive systems.

New tool for understanding enzymes -- Google (11 Dec 2018) Chemistry professors used the Google algorithm PageRank to identify key amino acids in the regulation of a bacterial enzyme essential for most microorganisms.

Nuclear events make a flower bloom (11 Dec 2018) Researchers report AGAMOUS and CRABS CLAW partner in a feed-forward system to terminate the floral meristem and form the gynoecium in Arabidopsis plants. The findings give new understanding on the epigenetics that determine fruit number and size.

New light on blocking Shiga and ricin toxins -- And on an iconic biological process (10 Dec 2018)
Researchers, setting their sights on Shiga toxin (player in the current E. coli outbreak from romaine lettuce) and ricin (a bioterrorism agent), have now identified potential protective strategies. Their study also sheds new light on glycosylation, the attachment of sugars to large molecules, key to cells' ability to create more diverse molecules b [+]

Scientists to produce anti-cancer drugs in yeast (07 Dec 2018) Nature is so complex that natural molecules used for i.e. cancer treatment still can't be produced by chemical synthesis. Today, major chemical and pharmaceutical companies harvest large amounts of rare plants and seeds in order to extract valuable substances.

Molecular insights into spider silk (07 Dec 2018) Spider silk belongs to the toughest fibers in nature and has astounding properties. Scientists have now discovered new molecular details of self-assembly of a spider silk fiber protein.

Bacterial 'sleeper cells' evade antibiotics and weaken defence against infection (07 Dec 2018) New research unravels how so-called bacterial persister cells manipulate our immune cells, potentially opening new avenues to finding ways of clearing these bacterial cells from the body, and stopping recurrence of the bacterial infection.

News about a plant hormone (07 Dec 2018) The plant hormone jasmonic acid also performs a function that was previously unknown. It ensures that the leaf pores close when leaves are injured. For the plant, this could be an emergency signal.

Engineers repurpose wasp venom as an antibiotic drug (07 Dec 2018) Engineers have repurposed wasp venom as an antibiotic drug that's nontoxic to human cells.

What can a snowflake teach us about how cancer spreads in the body? (06 Dec 2018) What can seashells, lightning and the coastline of Britain teach us about new drugs for cancer? The answer, according to a team of researchers, may revolve around fractals, the infinitely complex patterns found in nature.

What sets primates apart from other mammals? (06 Dec 2018) Researchers have discovered information about a gene that sets primates -- great apes and humans -- apart from other mammals, through the study of a rare developmental brain disorder.

Parrot genome analysis reveals insights into longevity, cognition (06 Dec 2018) Parrots are famously talkative, and a blue-fronted Amazon parrot named Moises -- or at least its genome -- is telling scientists volumes about the longevity and highly developed cognitive abilities that give parrots so much in common with humans. Perhaps someday, it will also provide clues about how parrots learn to vocalize so well.

Small molecules come into focus (05 Dec 2018)
Many biologically important small molecules, like hormones and amino acids, are too small to be measured by conventional detection methods. Researchers have created a new type of immuno-assay that is capable of detecting small molecules with 50-fold greater sensitivity than conventional detection methods, and can be easily integrated into existing [+]

Memory B cells in the lung may be important for more effective influenza vaccinations (05 Dec 2018)
Using a mouse model of influenza and experiments that included parabiosis, researchers definitively showed that lung-resident memory B cells establish themselves in the lung soon after influenza infection. Those lung memory B cells responded more quickly to produce antibodies against influenza after a second infection, as compared to the response b [+]

Sea invertebrate sheds light on evolution of human blood, immune systems (05 Dec 2018) Botryllus schlosseri, a marine invertebrate that lives in underwater colonies resembling fuzzy pinheads clinging to rocks, has a blood-forming system with uncanny similarities to that of humans, according to scientists.

A microbe's membrane helps it survive extreme environments (05 Dec 2018) Within harsh environments like hot springs, volcanic craters and deep-sea hydrothermal vents -- uninhabitable by most life forms -- microscopic organisms are thriving. How? It's all in how they wrap themselves.

30 years of experimental evolution results in a new sex chromosome (05 Dec 2018) Researchers report new findings of an experimental evolutionary project that ran for 30 years on the genomic mechanisms of sex determination in swordtail fish.

Tuberculosis survives by using host system against itself, study finds (05 Dec 2018) Scientists have discovered that the pathogen Mycobacterium tuberculosis (MTB) releases RNA into infected cells.

Enhancing our vision of the past (05 Dec 2018) Scientists have advanced our understanding of how ancient animals saw the world by combining the study of fossils and genetics.

A bacterial protein is found to promote cancer (04 Dec 2018) Researchers have discovered that DnaK, a protein of the bacterium mycoplasma, interferes with the mycoplasma-infected cell's ability to respond to and repair DNA damage, a known origin of cancer.

Inactivating genes can boost crop genetic diversity (04 Dec 2018) Researchers recently showed that inactivating a gene, RECQ4, leads to a three-fold increase in recombination in crops such as rice, pea and tomato. The discovery could speed up plant breeding and development of varieties better suited to specific environmental conditions.

Novel approach improves understanding of the formation of new neurons in the mammalian adult brain (04 Dec 2018) A team of researchers has developed a powerful new approach to understand the formation of new neurons in the mammalian adult brain.

Dynamics of chromatin during organ and tissue regeneration (04 Dec 2018) The researchers, who conducted the analysis with Drosphila melanogaster, discovered a group of genes involved in regeneration and which are kept in different species.

New technique to identify phloem cells aids in the fight against citrus greening (04 Dec 2018)
Phloem diseases, including the economically devastating citrus greening, are particularly difficult to study because phloem cells -- essential for plant nutrient transport -- are difficult to access and isolate. Researchers have developed a technique to identify phloem cells using fluorescent microscopy and organelle-specific dyes that is applicabl [+]

Life has a new ingredient (03 Dec 2018)
Our prehistoric Earth, bombarded with asteroids and lightening, rife with bubbling geothermal pools, may not seem hospitable today. But somewhere in the chemical chaos of our early planet, life did form. How? For decades, scientists have created miniature replicas of infant Earth in the lab in order to hunt for life's essential ingredients. Now, on [+]

Plant cells inherit knowledge of where's up and where's down from mother cell (03 Dec 2018) Knowing which way is up and which way is down is important for all living beings. For plants, which grow roots into the soil and flowers above ground, getting this polarization wrong would cause a whole host of problems. How polarity is reestablished after cell division was unknown -- until now.

A new approach to studying the flu (03 Dec 2018) A clever repurposing of a biological tool gives researchers new clues as to how the flu remains so successful.

First jellyfish genome reveals ancient beginnings of complex body plan (03 Dec 2018) The first in-depth look at the genome of a jellyfish -- the moon jelly Aurelia aurita -- shows that early jellyfish recycled existing genes to gain the ability to morph from polyp to medusa.

In death, Lonesome George reveals why giant tortoises live so long (03 Dec 2018) Genetic analysis of DNA from Lonesome George and samples from other giant tortoises of the Galapagos -- which can live more than 100 years in captivity -- found they possessed a number of gene variants linked to DNA repair, immune response, and cancer suppression not possessed by shorter-lived vertebrates.

Nanoscale tweezers can perform single-molecule 'biopsies' on individual cells (03 Dec 2018) Using electrical impulses, the 'tweezers' can extract single DNA, proteins and organelles from living cells without destroying them.



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. 


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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