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Archive for the ‘genetics’ category: Page 448

Aug 23, 2016

Accessible Synthetic Biology Raises New Concerns for DIY Biological Warfare

Posted by in categories: 3D printing, bioengineering, biotech/medical, genetics, habitats, military

Good; glad they are hearing us. Because it is a huge issue for sure especially with some of the things that I seen some of the researchers proposing to use CRISPR, 3D Printers, etc. to create some bizarre creatures. Example, in March to scientists in the UK wanted to use CRISPR to create a dragon; personally I didn’t expect it to be successful. However, the scientists didn’t consider the fallout to the public if they had actually succeeded.


For a few hundred dollars, anyone can start doing genetic editing in the comfort of their own home.

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Aug 22, 2016

Refining Optogenetic Methods to Map Synaptic Connections in the Brain

Posted by in categories: genetics, neuroscience

Summary: Researchers have optimized optogenetics to map the neural circuits of the rodent brain with single neuron resolution.

Source: Max Planck Florida.

Researchers at the Max Planck Florida Institute for Neuroscience are optimizing optogenetic methods for circuit mapping, enabling measurements of functional synaptic connectivity with single neuron resolution.

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Aug 22, 2016

Changing the Nature of Nature

Posted by in categories: bioengineering, biological, genetics

Alterar a natureza da natureza.

Inovadores estão trabalhando em direção a um mundo no qual a matéria viva é totalmente programável por meio da biologia sintética onde as pessoas já não são apenas consumidores de tecnologia, mas os cidadãos de um mundo tecnológico.

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Aug 20, 2016

Scientists Design Genome For Upgraded E. Coli

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

A team of Harvard Medical School scientists, which includes genetics professor George Church, have designed a bacterial genome that has been rewritten on a massive scale, with changes in more than 62,000 spots.

They haven’t used it to make living E. coli yet, but the findings, reported today in Science, mark progress towards genetically engineered bacteria that could make new materials without risk of exchanging genes with organisms in the wild.

“It‘s an important step forward for demonstrating the malleability of the genetic code and how entirely new types of biological functions and properties can be extracted from organisms through genomes that have been recoded,” Farren Isaacs of Yale University, who has worked with the team in the past, told Nature.

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Aug 19, 2016

Scientists ‘recode’ DNA in step toward lab-made organisms

Posted by in categories: biotech/medical, genetics

Scientists have created a complete E. coli genome with an altered “genetic dictionary,” a significant step toward the project of synthetic life.

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Aug 19, 2016

The Military Is Genetically Modifying Bacteria to Make Even Tinier Computers

Posted by in categories: computing, genetics, military

Geobacter is so common that junior-high students use it in science fairs, but it could also wire the military’s future nanoelectronics.

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Aug 18, 2016

Exclusive: Controversial US scientist creates deadly new flu strain for pandemic research

Posted by in categories: biotech/medical, genetics

The article overplays the alarmist tone a bit, but this is still an idiotic experiment.

If I understand correctly (the reporter didn’t explain it properly), he mutated the virus multiple times, until it no longer matches existing antibodies (i.e. somebody exposed would still become resistant — if they survived — and it is still possible to create new antiviral drugs that can target it); i.e. it is dangerous, but not invincible.

Given how long it takes to make new vaccinations for flue strains (and the cost of distributing them globally), this is still deeply irresponsible.

Continue reading “Exclusive: Controversial US scientist creates deadly new flu strain for pandemic research” »

Aug 18, 2016

Modifying a living genome with genetic equivalent of ‘search and replace’

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

Researchers including George Church have made further progress on the path to fully rewriting the genome of living bacteria. Such a recoded organism, once available, could feature functionality not seen in nature. It could also make the bacteria cultivated in pharmaceutical and other industries immune to viruses, saving billions of dollars of losses due to viral contamination. Finally, the altered genetic information in such an organism wouldn’t be able to contaminate natural cells because of the code’s limitations outside the lab, researchers say, so its creation could stop laboratory engineered organisms from genetically contaminating wildlife. In the DNA of living organisms, the same amino acid can be encoded by multiple codons — DNA “words” of three nucleotide letters. Here, building on previous work that demonstrated it was possible to use the genetic equivalent of “search and replace” in Escherichia coli to substitute a single codon with an alternative, Nili Ostrov, Church and colleagues explored the feasibility of replacing multiple codons, genome-wide. The researchers attempted to reduce the number of codons in the E. coli code from 64 to 57 by exploring how to eradicate more than 60,000 instances of seven different codons. They systematically replaced all 62,214 instances of these seven codons with alternatives. In the recoded E.coli segments that the researchers assembled and tested, 63% of all instances of the seven codons were replaced, the researchers say, and most of the genes impacted by underlying amino acid changes were expressed normally. Though they did not achieve a fully operational 57-codon E. coli, “a functionally altered genome of this scale has not yet been explored,” the authors write. Their results provide critical insights into the next step in the genome rewriting arena — creating a fully recoded organism.

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Aug 18, 2016

Engineers program human cells to store complex histories in their DNA

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

Luv this.


MIT biological engineers have devised a way to record complex histories in the DNA of human cells, allowing them to retrieve “memories” of past events, such as inflammation, by sequencing the DNA.

This analog memory storage system—the first that can record the duration and/or intensity of events in human cells—could also help scientists study how cells differentiate into various tissues during embryonic development, how cells experience environmental conditions, and how they undergo genetic changes that lead to disease.

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Aug 18, 2016

From Sci Fi to reality: Unlocking the secret to growing new limbs

Posted by in categories: biotech/medical, genetics

Many lower organisms retain the miraculous ability to regenerate form and function of almost any tissue after injury. Humans share many of our genes with these organisms, but our capacity for regeneration is limited. Scientists at the MDI Biological Laboratory in Bar Harbor, Maine, are studying the genetics of these organisms to find out how regenerative mechanisms might be activated in humans.

The ability of animals to regenerate body parts has fascinated scientists since the time of Aristotle. But until the advent of sophisticated tools for genetic and computational analysis, scientists had no way of studying the genetic machinery that enables regeneration. Using such tools, scientists at the MDI Biological Laboratory have identified genetic regulators governing regeneration that are common across species.

In a paper published in the journal PLOS ONE, MDI Biological Laboratory scientists Benjamin L. King, Ph.D., and Voot P. Yin, Ph.D., identified these common genetic regulators in three regenerative species: the zebrafish, a common aquarium fish originally from India; the axolotl, a salamander native to the lakes of Mexico; and the bichir, a ray-finned fish from Africa.

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