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Archive for the ‘genetics’ category: Page 478

Jun 5, 2016

We can now ‘cut and paste’ RNA in addition to DNA, and it could disable viruses

Posted by in categories: bioengineering, biotech/medical, genetics

You’ve probably heard of CRISPR — the gene editing tool that essentially lets scientists cut and paste DNA, removing things like HIV and muscular dystrophy from our cells — and now scientists have discovered a way to edit RNA with just as much precision.

RNA is DNA’s close biological cousin, responsible for translating messages from the nucleus to the rest of the cell, and being able to change it could open up all-new disease-fighting possibilities.

Just like CRISPR/Cas9 editing, the new procedure selectively cuts up RNA, which gives us microscopic control over genetic information, and the researchers behind it say it could open up the method could be used to block viruses and halt disease in its tracks.

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Jun 4, 2016

Scientists to launch 10-year project for creating human genomes

Posted by in categories: biotech/medical, genetics

Hmmmm;


Today a group of 25 scientists officially announced their plan to build a human genome from scratch within the next 10 years. The proposal — called the Human Genome Project-Write — would be, as BuzzFeed News put it, to lay “DNA letters like bricks”.

The group also includes experts from Harvard Medical School, the Massachusetts Institute of Technology, the USA government’s Lawrence Berkeley National Laboratory, Johns Hopkins University School of Medicine, Yale University, the University of Edinburgh, Columbia University, the University of California at Berkeley, the University of Washington, Autodesk Bio/Nano Research Group, Bioeconomy Capital and other institutions, and is led by geneticist Jef Boeke of the New York University Langone Medical Center.

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Jun 4, 2016

The Next Genetics Moonshot: Building a Human Genome from Scratch

Posted by in categories: biotech/medical, genetics

Yes, it’s true that a group of leading geneticists is calling for the construction of a synthetic human genome. That means they want to take 3 billion chemical building blocks and assemble them into one complete package of DNA, encoding all the body parts and life processes that make up a functional human being.”

“But the organizers want to make one thing very clear: ‘We’re not planning to make synthetic people,’ says a somewhat exasperated Jef Boeke, one of the champions of this proposal. ‘We never were.’


The Human Genome Project-Write could bring down the cost of DNA manufacturing.

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Jun 2, 2016

Fully synthetic humans? Proposed project could make it a reality

Posted by in categories: bioengineering, biotech/medical, genetics

A group of scientists on Thursday proposed an ambitious project to create a synthetic human genome, or genetic blueprint, in an endeavour that is bound to raise concerns over the extent to which human life can or should be engineered.

The project, which arose from a meeting of scientists last month at Harvard University, aims to build such a synthetic genome and test it in cells in the laboratory within 10 years. The project was unveiled in the journal Science by the experts involved.

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Jun 2, 2016

Scientists trick body’s viral response to combat cancer

Posted by in categories: biotech/medical, genetics

German researchers on Wednesday presented a Trojan horse method of attacking cancer, sneaking virus impersonators into the human body to unleash an anti-tumour immune offensive.

Tested in only three people so far, the treatment claims to be the latest advance in immunotherapy, which aims to rouse the body’s own immune army against disease.

Made in the lab, this Trojan horse is composed of nanoparticles containing RNA—a form of genetic coding—enclosed by a fatty acid membrane.

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Jun 2, 2016

Ageing breakthrough: Scientists create “hyper-long” telomeres without gene editing

Posted by in categories: bioengineering, biotech/medical, genetics, life extension

Scientists have successfully created mice with significantly longer telomeres than normal, resulting in a drop in molecular ageing, without using genetic manipulation.

Telomeres, which are found at the end of all animals’ chromosomes, are thought to be vital to ending ageing, as their shortening as we age is a key factor in cellular ageing and the onset of age-related disease. However, when they are lengthened beyond normal levels in mice, they have the precise opposite effect, protecting against ageing and related diseases, and increasing lifespan.

The mice, which are chimeras carrying both regular and “hyper-long” telomeres, were created using a technique based on epigenic changes, where embryonic stem cells are expanded in vitro, prompting changes to telomeres.

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Jun 2, 2016

Scientists create mice with hyper-long telomeres without altering the genes

Posted by in categories: biotech/medical, genetics, life extension

The cells with hyper-long telomeres in these mice appear to be perfectly functional. When the tissues were analysed at various moments (0, 1, 6 and 12 months of life), these cells maintained the additional length scale (they shortened over time but at a normal rhythm), accumulated less DNA damage and had a greater capacity to repair any damage. In addition, the animals presented a lower tumour incidence than normal mice.

These results show that pluripotent stem cells that carry hyper-long telomeres can give rise to organisms with telomeres that remain young at the molecular level for longer. According to the authors, this “proof of concept means that it is possible to generate adult tissue with longer telomeres in the absence of genetic modifications”.


The Telomeres and Telomerase Group at the Spanish National Cancer Research Centre (CNIO), in collaboration with the Centre’s Transgenic Mice Core Unit, has succeeded in creating mice in the laboratory with hyper-long telomeres and with reduced molecular ageing, avoiding the use of what to date has been the standard method: genetic manipulation. This new technique based on epigenetic changes that is described today in the pages of Nature Communications, avoids the manipulation of genes in order to delay molecular ageing. The study also underlines the importance of this new strategy in generating embryonic stem cells and iPS cells with long telomeres for use in regenerative medicine.

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Jun 2, 2016

A Sci-fi Cyberpunk Thriller HD: “Temple”

Posted by in categories: biotech/medical, genetics, media & arts

ENJOY!!! 2045 A.D. Cybernetically enhanced beings are in control of society. A new genetic disease is making humans reject their own organs, forcing one man to steal cybernetic implants from others to survive. By director Nguyen-Anh Nguyen.

Temple is a concept for a feature film project, produced by the team of the Akira Project.

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Jun 1, 2016

Genetically modified bacteria converts CO2 into liquid fuels

Posted by in categories: bioengineering, energy, genetics, transportation

Daniel G. Nocera, the Harvard professor who made headlines five years ago when he unveiled an artificial leaf, recently unveiled his latest work: an engineered bacteria that converts hydrogen and carbon dioxide into alcohols and biomass. One can be used directly as fuel to power vehicles that run on conventional fuels, while the other can be burned for energy.

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May 31, 2016

Use of next-generation gene sequencing in NICUs may improve diagnosis of rare diseases

Posted by in categories: biotech/medical, genetics

The use of next-generation gene sequencing in newborns in neonatal intensive care units (NICUs) may improve the diagnosis of rare diseases and deliver results more quickly to anxious families, according to new research in CMAJ (Canadian Medical Association Journal).

“Next-generation sequencing has the potential to transform the practice of clinical genetics rapidly,” writes Dr. David Dyment, Children’s Hospital of Eastern Ontario (CHEO), with coauthors. “In particular, newborns admitted to the NICU with rare and complex diseases may benefit substantially from a timely molecular diagnosis through next-generation sequencing.”

Children with suspected rare genetic diseases usually undergo a battery of tests to determine a molecular diagnosis. Current practice involves testing of specific genes or a panel of genes, and these tests are often done outside the country because of limited availability within Canada. This means it may be months or even years before a diagnosis is made.

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