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Noticiario genética


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Headline (Posted) Abstract
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.

Not in the DNA: Epigenetics discovered in single-celled archaea (03 Dec 2018)
Researchers have reported the first experimental evidence of epigenetics in the single-celled organisms known as archaea. The simplicity of archaea -- combined with the fact that their cells resemble eukaryotes' in some important ways -- may allow researchers to investigate epigenetic questions in humans much faster and more easily than was possibl [+]

Light-induced changes in photosensory proteins (03 Dec 2018) Researchers have been able to demonstrate how, on a molecular level, a specific protein allows light signals to be converted into cellular information. Their findings have broadened our understanding of the way how plants and bacteria adapt to changes in light conditions, which regulate essential processes, such as photosynthesis.

Researchers alleviate Schizophrenia symptoms in new mouse models (30 Nov 2018)
Does all the tinkering in young mice hamper their brain development, causing schizophrenia-like symptoms? Or, do their brain cells develop normally, but in adulthood struggle to communicate? Researchers need to know whether to focus their efforts on brain cell development or communication, or both, because the answer to these questions implies diff [+]

New research questions fish stocking obligations (30 Nov 2018) Fish stocking as a fisheries compensation method in hydropower operations no longer meets latest legal and scientific requirements, according to a new study. The study focuses on ecological flows from the viewpoints of law and biology.

Focus on resistance to HIV offers insight into how to fight the virus (30 Nov 2018) Of the 40 million people around the world infected with HIV, less than one per cent have immune systems strong enough to suppress the virus for extended periods of time. These special immune systems are known as "elite controllers." But how do they actually fight HIV? Scientists now think they've found an important clue.

New tools illuminate mechanisms behind overlooked cellular components' critical roles (29 Nov 2018) Creating new tools that harness light to probe the mysteries of cellular behavior, researchers have made discoveries about the formation of cellular components called membraneless organelles and the key role these organelles play in cells.

Soil compound fights chronic wasting disease (29 Nov 2018) A major compound in soil organic matter degrades chronic wasting disease prions and decreases infectivity in mice, according to a new study.

How viruses hijack part of your immune system and use it against you (29 Nov 2018) An enzyme intended to prevent autoimmune disease can be hijacked and used by some viruses to avoid immune detection. There's also good news. The same team also defined how much viral genetic material is needed to reverse the process and instead activate the immune system against the virus.

Shape-shifting protein protects bacteria from invaders (29 Nov 2018) Researchers have discovered how bacteria manage to destroy enemy DNA, while keeping their own genetic material safe.

New research could fine-tune the gene scissors CRISPR (29 Nov 2018) When researchers and doctors use the tool CRISPR to correct genetic errors, it may have side effects on the human genome. Now, researchers have learned how the molecular machinery behind CRISPR works and thus expect to be able to fine-tune CRISPR and remove the undesired effects.

Curry spice boosts exercise performance in mice with heart failure (29 Nov 2018) New research suggests that curcumin, a main ingredient in curry, may improve exercise intolerance related to heart failure.

HIV in liver cells found to be inactive, narrowing potential treatment targets (29 Nov 2018)
In a proof-of-principle study, researchers revealed that certain immune system cells found in the human liver, called liver macrophages, contain only inert HIV and aren't likely to reproduce infection on their own in HIV-infected people on long-term antiretroviral therapy (ART). ART is a regimen containing combinations of HIV-targeting drugs that p [+]

New study reveals common table salt may have been crucial for the origins of life (29 Nov 2018)
It remains unknown how life began on Earth. It is believed that simple molecules in the early environment became complexified by the input of ambient energy. Researchers found that compounds useful for the synthesis of RNA are produced with the help of sodium chloride - table salt. This work may provide insight on how RNA arose abiotically on early [+]

The protein that spurs dormant bacteria into reproduction (28 Nov 2018) Whether dormant bacteria begin to reproduce is no accident. Rather, they are simply waiting for a clear signal from a single protein in the cell interior. Researchers have now deciphered the molecular mechanisms behind this.



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