Lifeboat Foundation

Government representatives from nearly 170 countries will this month consider whether to temporarily ban the release of organisms carrying gene drives — a controversial technology that can quickly propagate a chosen gene throughout a population. The technique has the potential to eradicate disease, control pests and alter entire ecosystems, but with unpredictable consequences — leading some groups to call for a global moratorium on its field applications.

Research is moving fast on the divisive genetic technology, which could help to eradicate diseases but also risks altering ecosystems in unpredictable ways.

Canadian scientists have identified microscopic creatures that are so unlike anything seen before, they had to create an entirely new branch on the evolutionary tree of life to slot them in.

A new paper published this week in Nature offers the first genetic analysis of hemimastigotes—a rare and poorly understood group of single-celled microorganisms. Biologists have known about these wee beasties for well over a century, but only now can hemimastigotes be officially slotted into the evolutionary tree of life, a process more formally known as phylogeny. And by doing so, scientists have stumbled upon a completely new branch on the tree of life—one dating back billions of years.

More information on the search for natural senolytics (that clear the senescent cells and potentially make us younger)- on ficetin, found in abundance for example in strawberries, a newly published study and discussion in the blog of Josh Mitteldorf. But we still would have to consume around 20 kg strawberries for two consecutive days to reach the dose used in the happy longer living mice!

Senolytic drugs have been the most promising near-term anti-aging therapy since the ground-breaking paper by van Deursen of Mayo Clinic published in 2011 . The body accumulates senescent cells as we age, damaged cells that send out signal molecules that in turn modify our biochemistry in a toxic, pro-inflammatory direction. Though the number of such cells is small, the damage they do is great. Van Deursen showed that just getting rid of these cells could increase lifespan of mice by ~25%. But he did it with a trick, using genetically engineered mice in which the senescent cells had a built-in self-destruct switch.

After that, the race was on to find chemical agents that would do the same thing without the genetically engineered self-destruct. They must selectively kill senescent cells, while leaving all other cells unharmed. It’s a tall order, because even a little residual toxicity to normal cells can be quite damaging. Before last week, the two best candidates were FOXO4-DRI and a combination of quercetin with dasatinib .

Continue reading “Fisetin—a new senolytic” »

Thirteen years later, home DNA test kits have opened the floodgates for people who were born from sperm or egg donations to reveal the identities of their donors.

Donors used to be guaranteed anonymity, but things have changed, according to genetic genealogist CeCe Moore, founder of DNADetectives.

“It would be naive to think that a person could donate sperm or eggs and stay anonymous,” said Moore. “It isn’t going to happen.”

Continue reading “Home DNA tests mean sperm, egg donors can no longer hide their identities” »

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About 15 years ago, UNC Lineberger’s Dale Ramsden, Ph.D., was looking through a textbook with one of his students when they stumbled upon a scientific mystery.

A small line in the book indicated that a protein that helps repair major breaks in our genetic code did so by adding DNA, or deoxyribonucleic acid, as expected. However, there were hints that it could also add RNA, or ribonucleic acid, at least in a test tube. It seemed unlikely that this would occur during repair of DNA in living cells, since RNA is normally used only as a messenger to carry information from the genetic code to make proteins.

Continue reading “By solving a mystery of gene repair, scientists uncover an exception to biology’s rules” »

Two different marketplaces for genetic data, Nebula and EncrypGen, recently launched with the promise of better protections for their users.

Canadian researchers have discovered a new kind of organism that’s so different from other living things that it doesn’t fit into the plant kingdom, the animal kingdom, or any other kingdom used to classify known organisms.

Two species of the microscopic organisms, called hemimastigotes, were found in dirt collected on a whim during a hike in Nova Scotia by Dalhousie University graduate student Yana Eglit.

A genetic analysis shows they’re more different from other organisms than animals and fungi (which are in different kingdoms) are from each other, representing a completely new part of the tree of life, Eglit and her colleagues report this week in the journal Nature.

Continue reading “Organisms found on hike in the woods are like no other life on Earth News” »

The largest-ever study of genetics and sexual orientation offers a theory about the longevity of genes that influence homosexuality.

“We’re going to get these massive pools of sequenced genomic data,” Metzl said. “The real gold will come from comparing people’s sequenced genomes to their electronic health records, and ultimately their life records.” Getting people comfortable with allowing open access to their data will be another matter; Metzl mentioned that Luna DNA and others have strategies to help people get comfortable with giving consent to their private information. But this is where China’s lack of privacy protection could end up being a significant advantage.

To compare genotypes and phenotypes at scale—first millions, then hundreds of millions, then eventually billions, Metzl said—we’re going to need AI and big data analytic tools, and algorithms far beyond what we have now. These tools will let us move from precision medicine to predictive medicine, knowing precisely when and where different diseases are going to occur and shutting them down before they start.

But, Metzl said, “As we unlock the genetics of ourselves, it’s not going to be about just healthcare. It’s ultimately going to be about who and what we are as humans. It’s going to be about identity.”

Continue reading “Designer Babies, and Their Babies: How AI and Genomics Will Impact Reproduction” »