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Category: genetics – Page 534

New bioinformatics tool tests methods for finding mutant genes that ‘drive’ cancer

Further progress with cancer this time using genome sequencing.

In their search for new ways to treat cancer, many scientists are using a high-tech process called genome sequencing to hunt for genetic mutations that encourage tumor cells to thrive. To aid in this search, some researchers have developed new bioinformatics methods that each claim to help pinpoint the cancer-friendly mutants.

But a stubborn question remains: Among the numerous new tactics that aim to spotlight the so-called cancer driver genes, which produce the most accurate results?

To help solve this puzzle, a team of Johns Hopkins computational scientists and cancer experts have devised their own bioinformatics software to evaluate how well the current strategies identify cancer-promoting mutations and distinguish them from benign mutations in cancer cells.

Scientists Expand Mice Lifespans

Hype aside demonstration that epigentic reprogramming can reverse some of the aging process is an important step forward for progress. We can expect to see this moving to human trials in the next decade or so making the future an exciting possibility.

Science is increasingly coming to the conclussion that aging is amenable to intervention and that it is a plastic process that we can manipulate. More research in this week shows that aging is indeed elastic and is not a one way process at all. The sooner society accepts what the data from the labs is showing the sooner we can cure age-related diseases for healthier longer lives!

“We did not correct the mutation that causes premature aging in these mice,” lead researcher Juan Carlos Izpisua Belmonte said in a recent statement. “We altered aging by changing the epigenome, suggesting that aging is a plastic process.”

Scientists discover new bone-forming growth factor that reverses osteoporosis in mice

Progress with treating osteoporosis.

A team of scientists at the Children’s Medical Center Research Institute at UT Southwestern (CRI) discovered a new bone-forming growth factor, Osteolectin (Clec11a), which reverses osteoporosis in mice and has implications for regenerative medicine.

Although Osteolectin is known to be made by certain marrow and , CRI researchers are the first to show Osteolectin promotes the formation of new bone from skeletal stem cells in the bone marrow. The study, published in eLife, also found that deletion of Osteolectin in mice causes accelerated bone loss during adulthood and symptoms of , such as reduced bone strength and delayed fracture healing.

“These results demonstrate the important role Osteolectin plays in new bone formation and maintaining adult bone mass. This study opens up the possibility of using this growth factor to treat diseases like osteoporosis,” said Dr. Sean Morrison, who led the team that made the discovery. Dr. Morrison, CRI Director, holds the Mary McDermott Cook Chair in Pediatric Genetics at UT Southwestern Medical Center, and the Kathryne and Gene Bishop Distinguished Chair in Pediatric Research at Children’s Research Institute at UT Southwestern.

Scientists Evidence: Negativity Literally Makes Cancer Grow Inside the Body

We already know that excessive amounts of stress long term can cause certain individuals with certain predisposition cancer genetic mutations can cause cancer such as breast cancer. So, not surprise to see this.

In some situations, people who got hurt, replay the disturbing moment in their heads for many times and for many days. Every repetition you make usually causes more intense feelings making the situation worse.

Thanks to modern medicine, there is now proof that keeping these emotions inside you can have negative effects on your overall health. That’s why we would like to discuss forgiveness.

When it comes to clinical view, forgiveness is a process where a person gives up from the feeling of bitterness and thoughts associated with retribution.

Gene editing takes on new roles

What combinations of mutations help cancer cells survive? Which cells in the brain are involved in the onset of Alzheimer’s? How do immune cells conduct their convoluted decision-making processes? Researchers at the Weizmann Institute of Science have now combined two powerful research tools — CRISPR gene editing and single cell genomic profiling — in a method that may finally help us get answers to these questions and many more.

The new technology enables researchers to manipulate gene functions within single cells, and understand the results of each change in extremely high resolution. A single experiment with this method, say the scientists, may be equal to thousands of experiments conducted using previous approaches, and it may advance the field of genetic engineering for medical applications.

The gene-editing technique CRISPR is already transforming biology research around the world, and its clinical use in humans is just around the corner. CRISPR was first discovered in bacteria as a primitive acquired immune system, which cuts and pastes viral DNA into their own genomes to fight viruses. In recent years, this bacterial system has been adopted by researchers to snip out or insert nearly any gene in any organism or cell, quickly and efficiently. “But CRISPR, on its own, is a blunt research tool, since we often have trouble observing or understanding the outcome of this genomic editing,” says Prof. Ido Amit of the Weizmann Institute of Science’s Immunology Department, who led the study. “Most studies so far have looked for black-or-white types of effects,” adds Dr. Diego Jaitin, of Amit’s lab group, “but the majority of processes in the body are complex and even chaotic.”

Ageing process may be reversible, scientists claim

The team showed that a new form of gene therapy produced a remarkable rejuvenating effect in mice. After six weeks of treatment, the animals looked younger, had straighter spines and better cardiovascular health, healed quicker when injured, and lived 30% longer.

Juan Carlos Izpisua Belmonte, who led the work at the Salk Institute in La Jolla, California, said: “Our study shows that ageing may not have to proceed in one single direction. With careful modulation, ageing might be reversed.”

The genetic techniques used do not lend themselves to immediate use in humans, and the team predict that clinical applications are a decade away. However, the discovery raises the prospect of a new approach to healthcare in which ageing itself is treated, rather than the various diseases associated with it.

Will Gene-Editing Technologies Spark the Next Cold War? They Already Have

Excellent article by Nick Gillespie, Editor-in Chief of Reason. Genetic editing is so far the 21st Century’s most important science—and it’s already being challenged by many as too radical: http://reason.com/blog/2016/12/15/will-gene-editing-technologies-spark-the #transhumanism #CRISPR #Future

The folks behind CRISPR gene editing were runners-up for Time’s Person of the Year. Their creation may win the future for secular China.

Can naked mole rats teach us the secrets to living far longer? Google thinks so

It is looking increasingly likely the mysterious Google Calico have very modest ambitions regarding increased lifespans for humans given the comments made by Dr. Aubrey de Grey and others and the direction they are taking with their research. Modest increases of lifespan over the kind of robust therapies of SENS seems pretty dissapointing.

More about Google Calico and their aim to modestly increase lifespan. People like Dr. Aubrey de Grey and Nathaniel David from rising biotech star Unity.

“To some, Calico’s heavy bet on basic biology is a wrong turn. The company is “my biggest disappointment right now,” says Aubrey de Grey, an influential proponent of attempts to intervene in the aging process and chief science officer of the SENS Research Foundation, a charity an hour’s drive from Calico that promotes rejuvenation technology. It is being driven, he complains, “by the assumption that we still do not understand aging well enough to have a chance to develop therapies.” Indeed, some competitors are far more aggressive in pursuing interventions than Calico is.

They are very committed to these fundamental mechanisms, and bless them for doing that. But we are committed to putting drugs into the clinic and we might do it first,” says Nathaniel David, president and cofounder of Unity Biotechnology. This year, investors put $127 million behind Unity, a startup in San Francisco that’s developing drugs to zap older, “senescent” cells that have stopped dividing. These cells are suspected of releasing cocktails of unhelpful old-age signals, and by killing them, Unity’s drugs could act to rejuvenate tissues. The company plans to start with a modestly ambitious test in arthritic knees. De Grey’s SENS Foundation, for its part, has funded Oisin Biotechnologies, a startup aiming to rid bodies of senescent cells using gene therapy.”