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Noticiario genética

            

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Headline (Posted) Abstract
Evolving 'lovesick' organisms found survival in sex (28 Mar 2017) Being 'lovesick' takes on a whole new meaning in a new theory which answers the unsolved fundamental question: why do we have sex?

Discovery of a new regulatory protein provides new tool for stem cell engineering (28 Mar 2017) Bioengineers have discovered a protein that regulates the switch of embryonic stem cells from the least developed 'naïve' state to the more developed 'primed' state. This discovery sheds light on stem cell development at a molecular level.

Mustard seeds without mustard flavor (28 Mar 2017) Researchers have successfully developed a new oilseed crop that is much more resistant to heat, drought and diseases than oilseed rape.

Chlamydia: How bacteria take over control (28 Mar 2017) To survive in human cells, chlamydiae have a lot of tricks in store. Researchers have now discovered that the bacterial pathogens also manipulate the cells' energy suppliers in the process.

Zika virus protein mapped to speed search for cure (27 Mar 2017) A team of scientists has mapped a key protein that causes the Zika virus to reproduce and spread. Results of this study advance efforts to find drugs in fight against the disease, say scientists.

Nanocages dramatically facilitate structure formation of biomolecules (27 Mar 2017) Nano-size space help faster folding of molecules and stabilize the structure, which regulates enzyme reactions.

Cell biology: The quickest route to the tip for protein transport (27 Mar 2017) According to a new theoretical model, in cell protrusions and cargo-transporting motor proteins often get in each other's way. The upshot is that freely diffusing proteins reach the leading edge faster.

Hydrogen production: This is how green algae assemble their enzymes (27 Mar 2017) Researchers have analyzed how green algae manufacture complex components of a hydrogen-producing enzyme. The enzyme, known as the hydrogenase, may be relevant for the biotechnological production of hydrogen.

Nitrogen foraging ability of plants relies on mobile shoot-root hormone signal (27 Mar 2017)
Researchers have discovered the molecular mechanisms underlying the shoot-to-root stage of nitrogen-demand signaling in plants. The team found that genes encoding CEPD polypeptides are switched on in the shoots in response to nitrogen starvation in the roots. These polypeptides then descend into the roots, and activate a nitrate transporter gene on [+]


Unique wheat passes the test (27 Mar 2017) A unique, patented wheat can have significant importance to agriculture, the environment and undernourished people in developing countries. Animal tests recently demonstrated that this special wheat increases P and Ca digestibility.

Amazingly fast, cheap genome sequencing: Zika virus mosquito genome assembled from scratch (24 Mar 2017) A team of scientists has developed a new way to sequence genomes, which can assemble the genome of an organism, entirely from scratch, dramatically cheaper and faster.

Big data approach to predict protein structure (24 Mar 2017)
Nothing works without proteins in the body; they are the molecular all-rounders in our cells. If they do not work properly, severe diseases, such as Alzheimer's, may result. To develop methods to repair malfunctioning proteins, their structure has to be known. Using a big data approach, researchers have now developed a method to predict protein str [+]


Evolutionary advantage of the common periwinkle (24 Mar 2017)
A special kind of small sulfur-rich proteins, the metallothioneins, have an extraordinarily large capability for binding heavy metals. An international team of scientists has now discovered that the marine common periwinkle, which is widely considered a delicacy, contains the largest version of the protein found yet, with one additional cadmium-bin [+]


Novel virus breaks barriers between incompatible fungi (23 Mar 2017) Scientists have identified a virus that can weaken the ability of a fungus to avoid pairing with other incompatible fungi, according to new research published in PLOS Pathogens. By promoting fungal pairing, the virus could aid transmission of additional unrelated viruses between fungi.

Fighting malaria through mathematical analysis of parasite's metabolism (23 Mar 2017) A new mathematical model, based on the deadliest malaria parasite, Plasmodium falciparum, could help develop antimalarials by identifying key metabolic targets, according to a new study.

Peptide targeting senescent cells restores stamina, fur, and kidney function in old mice (23 Mar 2017)
Regular infusions of a peptide that can selectively seek out and destroy broken-down cells that hamper proper tissue renewal, called senescent cells, showed evidence of improving healthspan in naturally aged mice and mice genetically engineered to rapidly age. The proof-of-concept study found that an anti-senescent cell therapy could reverse age-re [+]


Membrane lipids hop in and out of rafts in the blink of an eye (23 Mar 2017) New fluorescent lipids demonstrate how specialized regions in the cell membrane function, explain researchers in a new report.

Designer proteins fold DNA: Biophysicists construct complex hybrid structures using DNA and proteins (23 Mar 2017) Scientists have developed a new method that can be used to construct custom hybrid structures using DNA and proteins. The method opens new opportunities for fundamental research in cell biology and for applications in biotechnology and medicine.

Stress may protect, at least in bacteria (23 Mar 2017) Antibiotics harm bacteria and stress them. Trimethoprim, an antibiotic, inhibits the growth of the bacterium Escherichia coli and induces a stress response. This response also protects the bacterium from subsequent deadly damage from acid. Antibiotics can therefore increase the survival chances of bacteria under certain conditions.

Scientists reveal hidden structures in bacterial DNA (23 Mar 2017) Researchers have described the 3D structure of the genome in the extremely small bacteria Mycoplasma pneumoniae. They discovered previously unknown arrangements of DNA within this tiny bacteria, which are also found in larger cells. Their findings suggest that this type of organization is a universal feature of living cells.

Molecular roadmap of human stem cell states (23 Mar 2017)
Researchers have identified a set of molecular 'flags' that are present on the surface of human stem cells. By recognizing the flags, researchers can now accurately track and investigate stem cells as the cells transition between different states. This approach has revealed new insights into the timing and coordination of the changes in gene activi [+]


New tools to study the origin of embryonic stem cells (23 Mar 2017) Researchers have identified cell surface markers specific for the very earliest stem cells in the human embryo. These cells are thought to possess great potential for replacing damaged tissue but until now have been difficult to distinguish from classical embryonic stem cells.

Predatory bacteria: The new 'living' antibiotic (23 Mar 2017) Antibiotic resistance is one of medicine’s most pressing problems. Now, a team from Korea is tackling this in a unique way: using bacteria to fight bacteria.

Research questions effectiveness of translocation conservation method (22 Mar 2017) A DNA study of endangered greater prairie chickens in Illinois indicates that supplementing the dwindling population with birds from out of state did not improve genetic diversity.

Heart tissue grown on spinach leaves (22 Mar 2017)
Researchers face a fundamental challenge as they seek to scale up human tissue regeneration from small lab samples to full-size tissues and organs: how to establish a vascular system that delivers blood deep into the developing tissue. Researchers have now successfully turned to plants, culturing beating human heart cells on spinach leaves that wer [+]


After the epigenome: The epitranscriptome (22 Mar 2017) A new article explains that RNA also has its own spelling and grammar, just like DNA. These 'epigenetics of RNA' are called epitranscriptome.

New cell membrane fusion model challenges dogma (22 Mar 2017)
Membrane fusion lies at the heart of many cell functions—from the secretion of antibodies to the release of neurotransmitters. For more than two decades, one view of the process by which membrane fusion occurs has been accepted as dogma; now recent studies indicate that fusion is more complex. These discoveries are being regarded by at least one le [+]


Asthma: Researchers discover how exposure to microbes protects against asthma (21 Mar 2017)
The incidence of asthma is increasing steadily. One of the reasons given for this rise is the excessive level of hygiene in our environment. Studies have indeed shown that exposure to a so-called "non-hygienic" environment, rich in microbes, plays a protective role against the development of allergies, including asthma. New research shows that expo [+]


Parsley and other plants lend form to human stem cell scaffolds (21 Mar 2017) Scientists are using the decellularized husks of plants such as parsley, vanilla and orchids to form three-dimensional scaffolds that can then be primed and seeded with human stem cells to optimize their growth in the lab dish and, ultimately, create novel biomedical implants.

Quantum dots illuminate transport within the cell (21 Mar 2017) Biophysicists have developed a strategy for using light-emitting nanocrystals as a marker in living cells. By recording the movements of these quantum dots, they can clarify the structure and dynamics of the cytoskeleton.

Cut the long story short, and stitch it back together (20 Mar 2017) A species of unicellular ciliate has found a special trick to make use of the cellular machinery in seemingly impossible ways. Researchers have for the first time described a mechanism in detail how so called "junk"-DNA is transcribed before being degraded – and this mechanism is remarkably clever.

Team nebulizes aphids to knock down gene expression (20 Mar 2017) Researchers are nebulizing soybean aphids with RNA to speed the process of discovering the function of many mystery genes.

DNA labels predict mortality (20 Mar 2017)
Methyl labels in the DNA regulate the activity of our genes and, thus, have a great influence on health and disease. Scientists have now revealed that an altered methylation status at only 10 specific sites in the genome can indicate that mortality is increased by up to seven times. Smoking has a particularly unfavorable impact on the methylation s [+]


Drosophila effectively models human genes responsible for genetic kidney diseases (17 Mar 2017) The majority of genes associated with nephrotic syndrome (NS) in humans also play pivotal roles in Drosophila renal function, a conservation of function across species that validates transgenic flies as ideal pre-clinical models to improve understanding of human disease, a research team reports.

Study finds link between sugar signaling, regulation of oil production in plants (17 Mar 2017)
Even plants have to live on an energy budget. While they’re known for converting solar energy into chemical energy in the form of sugars, plants have sophisticated biochemical mechanisms for regulating how they spend that energy. Making oils costs a lot. By exploring the details of this delicate energy balance, a group of scientists has identified [+]


First steps in human DNA replication dance captured at atomic resolution (17 Mar 2017) A team has published pictures at very high atomic resolution of the multi-part protein complex that performs the very first step in the incredibly complex genome-replication dance that occurs when one cell becomes two. The images of the human version of this complex, called ORC - for origin recognition complex - show it in its active mode.

How improved valves let grasses 'breathe,' cope with climate change (16 Mar 2017)
New work from a joint team of plant biologists and ecologists has uncovered the factor behind an important innovation that makes grasses -- both the kind that make up native prairies and the kind we've domesticated for crops -- among the most-common and widespread plants on the planet. Their findings may enable the production of plants that perform [+]


Dietary anti-cancer compound may work by influence on cellular genetics (16 Mar 2017) Sulforaphane, a dietary compound from broccoli that's known to help prevent prostate cancer, may work through its influence on long, non-coding RNAs, report scientists. This is another step forward in a compelling new area of study on the underlying genetics of cancer development and progression.

Grasses: The recipe for especially efficient stomata (16 Mar 2017) Scientists have identified a key element underlying the superior function of stomata -- or tiny, gas-exchanging pores -- in grasses, where stomata function more efficiently than they do in other plant types.

New plant research solves a colorful mystery (16 Mar 2017) New research has solved a long-standing mystery by deducing how and why strange yet colorful structures called 'anthocyanic vacuolar inclusions' occur in some plants.

 


  

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

 

 

 

 

Biological Sciences - Genetics: 394 journals. http://journalseek.net/cgi-bin/journalseek/journalsearch.cgi?field=category&query=bio.genet

Linked Journals (345)

 

   Non-Linked Journals (49)


La genética no tiene nada que ver con la avaricia, los negocios, el prejuicio racial. Todos los sistemas operantes en cualquier sociedad son parte de tu educación: los libros que lees, los modelos de conducta que sigues y la gente que admiras (...). Los genes no controlan valores.

Jacque Fresco, fundador de "El Proyecto Venus".

Contribuido por Garazi URIONA EGIA