We live in a world filled with viruses; they are everywhere that host species exist.
The Human Virome's Permanent Mark
The Human Virome's Permanent Mark
The virome doesn’t get as much love as its charismatic older brother, the microbiome. Studies of the bacteria that live inside us have caught the public imagination, showing that we contain a teeming diversity of critters whose populations affect everything from our diets to our immune systems. Thanks to cheap DNA sequencing, you can send samples of your microbiome to a lab and have a quick census taken; services like American Gut will even give you a colorful chart showing you which bacteria have been found and in what numbers. (Strictly the virome is part of the microbiome, which includes all the viruses, protozoa, and fungi living in one environment ― but bacteria are the stars of the show.)[more inside]
Carl Zimmer writes for The New York Times: How Simple Can Life Get? It's Complicated - "Scientists have long wondered how much further life can be stripped down and still remain alive. Is there a genetic essence of life? The answer seems to be that the true essence of life is not some handful of genes, but coexistence." [more inside]
"Scientists have reconstructed the genome of a man who lived 45,000 years ago, by far the oldest genetic record ever obtained from modern humans. The research, published on Wednesday in the journal Nature, provided new clues to the expansion of modern humans from Africa about 60,000 years ago, when they moved into Europe and Asia. And the genome, extracted from a fossil thighbone found in Siberia, added strong support to a provocative hypothesis: Early humans interbred with Neanderthals."
The Genome Compiler is an IDE for DNA projects for all you DIYbio enthusiasts. Previously. Previously.
Invasive amniocentesis and chorionic villi sampling (CVS) tests are commonly used to determine the chromosomal, structural and genetic abnormalities in fetuses. But could they eventually become obsolete? A Chinese study has found that a complete copy of the fetal genome exists in the mother's blood, suggesting many prenatal diagnoses could potentially be performed noninvasively. [more inside]
"The ability to design and create new forms of life marks a turning-point in the history of our species and our planet." - Freeman Dyson, on the J.C. Venter Institute's creation of a cell controlled by a synthetic genome. We are now in the business of engineering life.
Neandertals are the closest ancestral relatives to modern humans. Today, Nature published a special report on the Neandertal genome, for which a draft sequencing of three billion nucleotides has been completed. This high-throughput sequencing project shows how the genetic relationship between Neandertals and modern Europeans and Asians suggests localized interbreeding between the two species roughly 40-80,000 years ago, complicating the common "out-of-Africa" story of how modern humans originated. Additional research extends this low-coverage, first-pass sequencing with a microarray approach that uncovers specific differences between the human and Neandertal genomes.
Followup to this post: A US District Court has ruled that Myriad Genetic's patents on breast cancer genes BRCA1 and BRCA2, which allow them to hold exclusive rights to a widely used genetic test for inherited breast and ovarian cancer susceptibility, are invalid. Genomics Law Report analyzes the ruling in two posts. The decision is likely to be challenged in a legal appeal — but if upheld, it could have huge implications for the biotechnology industry. [more inside]
Volunteers from the general public working together with researchers to advance personal genomics. 10 volunteers, among them noted author and cognitive psychologist Stephen Pinker, have open sourced (so to speak) their genetic information. [more inside]
Scientists have built the first synthetic genome by stringing together 147 pages of letters representing the building blocks of DNA.
"We are becoming the masters of our own DNA. But does that give us the right to decide that my children should never have been born?" John Sundman is a science fiction novelist and the father of two children with severe medical conditions. In this two-part article he shares his experiences and thoughts on bioethics, the Human Genome Project and whether genetics research is paving the way for a resurgent eugenics movement.
DNA used to ascertain race of unidentified serial killer. Florida company DNAPrint Genomics claims their test can identify the race (ie, African, Caucasian, East Asian or American Indian) of a person from their DNA. CEO Tony Frudakis says that "of over 2,200 blind samples tested, the test is yet to get one wrong."
Genome liberation. "Life science researchers -- even those who work in academic settings -- are finding that corporations are just as eager to patent the tools as they are the data, and in many cases, universities are bending over backward to let the private sector have its way. As a result, a growing number of bioinformatics researchers are beginning to look to the free-software and open-source software movements for inspiration in their quest for bio freedom."
Why Genetic Engineering Is So Dangerous Environmentalist/biologist Barry Commoner's essay in the February issue of Harper's magazine warns about the unknown dangers of genetic engineering. "...billions of transgenic plants are now being grown with only the most rudimentary knowledge about the resulting changes in their composition. Without detailed, ongoing analyses of the transgenic crops, there is no way of knowing what hazardous consequences may arise. But, given the failure of the Central Dogma, there is no assurance that they will not. The genetically engineered crops now being grown represent a huge uncontrolled experiment; its outcome is inherently unpredictable. Our project is designed to help develop effective public understanding of the dangerous implications of this critical predicament." He asserts that the "Central Dogma", the basis for the Human Genome Project, was known to be flawed prior to the inception of the $3 billion program. Should we be amused/impressed or very worried when we read about pig/spinach crosses and the like? Related article here.
Last week I was watching a Nova program on PBS called 'Cracking the Code of Life', which brought to my attention a disturbing fact about the process of mapping the Human Genome; private companies have applied for patents for gene sequences that they've mapped. Many of these patents were applied for before the government began the Human Genome Project. Although the patent office has put these applications on hold until it figures out what to do with them, many drug companies an researchers won't work with a gene sequence if there is a patent application outstanding. You can get involved yourself by petitioning against patents on life.
Soon you can get your own copy of the Human Genome. (Funny, I thought I already had one.)