#telomere

[edofuriki]

Cute Curren Chan | Telomere

[skysv1ew]

[archi-pelago]

time to redesign my ocs from 2014 and fuck with them. whats up its fucking tal and 3in my horrible doomed murderkid and her boyfriend who's a hell robot. this is normal

[a-typical]

Complete Human Genome Sequenced for First Time In Major Breakthrough

The final eight percent of the human genome, which contains immune response genes and the keys to our big brain, has been mapped. x

Scientists have mapped an entire unbroken human genome for the first time, a milestone that completes the groundbreaking work started by the Human Genome Project decades ago, according to a motherlode of new studies published in Science and other journals on Thursday. The final stubborn gaps of the genome, representing about eight percent of this human blueprint, were filled by the Telomere to Telomere (T2T) consortium, an international team consisting of dozens of scientists. The achievement opens the door to a host of new discoveries about the genetic variation between people, the evolution of our species, and the treatment of genetic diseases.

“It turns out that these genes are incredibly important for adaptation,” Eichler said. “They contain immune response genes that help us to adapt and survive infections and plagues and viruses. They contain genes that are important in terms of helping us detoxify agents and they are very important in terms of predicting drug response.”

“But perhaps most interesting to me is they carry genes that make us uniquely human,” he continued. “About half of the genes that are thought to make our bigger brain, compared to the other apes, come specifically from these regions, which were absent in the original Human Genome Project-”

Working with just one version of the genome simplified the process of mapping out the remaining euchromatic genes, though the researchers acknowledged the limitations of working with one specific ancestral heritage. To get a better read on the incredible diversity of humans, the T24 consortium is partnering with the Human Pangenome Reference Consortium to fully map genomes from different lineages that will reveal, in unprecedented detail, how all humans are related to each other.

[citrineburm]

My genomerian, telomere! They appeared on the master post too

They are a part of my au btw

Genomerians were made by the lovely @gamebirb

[didanawisgi]

Abstract

Telomere shortening is one of the main causes for cellular senescence. Caffeine is a natural stimulant most commonly found in coffee and tea. In this study, caffeine was discovered to promote the expression of telomerase reverse transcriptase (TERT) at both mRNA and protein levels, consequently extend telomere length and prevent cellular senescence. Knockdown of TERT eliminated the effect of caffeine on telomere elongation. Moreover, animal studies indicated that caffeine promoted the expression of TERT and extended telomere length in the thymus and spleen of mice treated with caffeine for a long period of eight months. In addition, caffeine restored the decline of organ index and improved the histological structural change of the thymus, spleen and liver of mice due to aging. These results suggest that caffeine promotes the expression of TERT to delay cellular senescence and aging, which help to understand the mechanism for the benefit of caffeine containing foods on health.

[historic-old-guard-lover]

The “Klothos Hormone” Is Real: the Science in The Old Guard Film

Okay, so I did recently go off in a post because my first reaction to science in a film is skepticism. They always screw up the evil scientists by not making them have real science. But the Old Guard is different! They’re the best film ever. They used real science.

I decided to search scientific articles for the term “klothos hormone” to see if it was a real thing, and SciFinder did not disappoint. Take this quote from an abstract of this paper:

Klotho is a transmembrane protein, which can be shed and act as a circulating hormone and is involved in regulating cellular calcium levels and inhibition of the PI3K​/AKT pathway.  As a longevity hormone, it protects normal cells from oxidative stress, and as a tumor suppressor it inhibits growth of cancer cells.

So it turns out that it is a real hormone that is shown to affect aging in mice.

The other scientific aging area mentioned in the movie is telomere extension. Telomeres, the repeating end caps of our chromosomes that help prevent cancer, are considered important to aging. This is why lobsters are essentially immortal: they regenerate their telomeres and cannot die from aging. An example of research on this topic can be found in this article discussing the role of a specific protein in preserving telomere length.

This begs the question: could Dr. Kozack be looking into the intersection of klothos and telomeres? We can answer by asking a related question: is this an area of research? When I search for both “telomere extension” and “klothos” on one of the best scientific databases, there are no results. (the fact that I am head-over-heels for SciFinder and dread loosing it if I ever leave academia is a tale for another time...)

When I broadened my search for any overlap between “telomere” and “klothos”, we did get somewhere. However, there were only 96 results which either means this is a new area for the field of aging research or these are going to be review articles. I started looking at the most recent publications for the answer.

The most recent article (link may be broken, let me know if it is) discusses kidney disease and does not deal with these two as connected research topics. There was another recent article about kidney disease that cited both as distinct concepts. As far as I can tell from my skimming, there is no research where people are looking at the effects of the klothos protein/hormone on telomeres. Does this mean it is an unpromising avenue? Not necessarily, but probably.

This does NOT mean that Kozack is going about the research the right way. There are things called ethics that every scientist in the lab, even undergraduate interns, need to be trained in before they even look at a pipette. Obviously when she asks Nicky whether he thinks she is unethical, she knows this. She knows that she is breaking at least ten rules, spoken and unspoken, by doing what she is doing. This leads me to believe that she is perhaps not as trained as a scientist as she thinks she is, so maybe she is just researching an endless rabbit hole. It brings me great joy to image her throwing away Merrick’s money on a dumb idea she doesn’t know better than to drop. Even when you know your research is promising, having no results after a while can drive any sane scientist mad.

In conclusion, The Old Guard went out there and found real research, gave their evil scientist an (unpromising) research direction, and let her go insane. We can headcannon Dr. Kozack as immoral and unethical, but that lady has a PhD and the writing reflects that. I love this movie.

[dt75artblog]

my current dnd campaign ended today,, it was really fun lol. i intended my character (dragon lady, going crazy duma fireemblem style) to have a depressing drakengard-type ending but instead she joined the royal guard and became a beloved knight? im so proud of her