Toggle light / dark theme

With advances in genomics research, personalized medicine, and sequencing-based technologies, there is a necessity for purification of high-quality genomic DNA from large volumes of blood. The rapidly growing landscape of biorepositories that store large amounts of DNA from an enormous number of biospecimens further fuels this need to find optimized solutions for reliable purification of DNA. The information derived from the purified DNA is crucial to health science research and facilitates drug discovery, biomarker discovery, clinical implementation projects, etc. For the success of these analyses and to derive relevant information, DNA extraction is the most critical step and must meet the criteria of extraction speed, yield and quality, as well as reproducibility. Many nucleic acid purification kits and automation workflows for processing blood samples in the volume range of 100–250 μL exist, but not many convenient, automated options exist for volumes as high as 2 mL without sample splitting. To fill this opening, Omega Bio-tek has developed a semi-automated solution on the MagBinder® Fit24 to extract DNA from large volumes of fresh or frozen blood. Here, we provide background information on biobanks, as well as present the solution Omega Bio-tek has developed for DNA extraction from large volumes of whole blood.

A biobank is a specialized repository that systematically collects, processes, stores, and manages biological samples for use in medical research and treatments. The primary purpose of a biobank is to provide a centralized and organized resource of high-quality biological materials, such as blood or tissue, along with relevant clinical and demographic data1. These invaluable assets are at the center of advancements in cancer treatments, biomarker discovery, and understanding genetic factors for disease. At a high level, biobanks can be classified by two categories1:

It’s long been assumed that as cells divide in the human body, the genome is faithfully replicated in the resulting daughter cells. While errors are known to arise, there is machinery in the cell that can detect these genetic errors, and can often repair them. When mutations remain in the genome, it raises the risk that disease will arise.

But the human genome is made up of about 6 billion bases, and the human body contains billions, even trillions of cells. And it seems that errors and variations in the genome could actually arise far more often than we knew, according to a new study reported in Nature Genetics that analyzed blood stem cells. The research used advanced sequencing techniques to show that humans are made up of cells whose genomes may be far more heterogeneous that assumed. And these variations between cells are not always small. The research determined that about one out of every forty blood stem cells in healthy people carry major chromosomal alterations in their DNA. These chromosomal changes included copy number variations and rearrangements, but did not seem to cause any deleterious effect.

Fewer miniature black holes found:


Researchers at the University of Tokyo have found that the universe contains far fewer miniature black holes than previously thought, potentially shaking up current theories about dark matter.

Using advanced quantum field theory, typically reserved for subatomic particles, they applied this understanding to the early universe. They discovered new insights into primordial black holes (PBHs), which have been a strong contender for dark matter. Upcoming observations could soon confirm their surprising findings.

Awkward.


“The prevalence and harms of online misinformation is a perennial concern for internet platforms, institutions and society at large,” reads the paper. “The rise of generative AI-based tools, which provide widely-accessible methods for synthesizing realistic audio, images, video and human-like text, have amplified these concerns.”

The study, first caught by former Googler Alexios Mantzarlis and flagged in the newsletter Faked Up, focused on media-based misinformation, or bad information propagated through visual mediums like images and videos. To narrow the scope of the research, the study focused on media that was fact-checked by the service ClaimReview, ultimately examining a total of 135,838 fact-check-tagged pieces of online media.

As the researchers write in the paper, AI is effective for producing realistic synthetic content quickly and easily, at “a scale previously impossible without an enormous amount of manual labor.” The availability of AI tools, per the researchers’ findings, has led to hockey stick-like growth in AI-generated media online since 2023. Meanwhile, other types of content manipulation decreased in popularity, though “the rise” of AI media “did not produce a bump in the overall proportion” of image-dependant misinformation claims.

People battling advanced colon cancers might have a new treatment option that could extend their survival, a new trial finds.

A combination of two experimental immunotherapy drugs plus standard chemotherapy led to a median 19.7 month survival for patients, compared to the median 9.5 months observed among folks who only got a targeted therapy called regorafenib.

“These results pave the way for further exploration of this promising treatment approach,” said study first author Dr. Zev Wainberg. He co-directs the UCLA Health GI Oncology Program, and is a researcher at the UCLA Health Jonsson Comprehensive Cancer Center.

Oncologists base prognosis, the predicted long-term outcome of an individual’s cancer, on the chances of recovery versus the chances of experiencing a recurrence or failure to respond to interventions. A clear understanding of prognosis can significantly influence treatment planning, lifestyle, and overall quality of life of a cancer patient. Thus, ongoing research to uncover, validate, and optimize the predictive accuracy of prognostic factors, modifiable or non-modifiable characteristics that help estimate prognosis, has significant value to areas of cancer treatment and care.

A meta-analysis recently published in the International Journal of Gynecological Cancer evaluated the value of different prognostic factors for epithelial ovarian cancer, an aggressive and deadly cancer occurring in the tissue lining women’s ovaries.

Epithelial ovarian cancer represents a highly fatal disease, with an estimated 19,680 new cases and 12,740 deaths in the United States in 2024. Diagnosis of ovarian cancer remains challenging, and as a result, most women with ovarian cancer have advanced-stage disease. Once advanced, ovarian cancer may spread into the peritoneum, the tissue lining the abdominal wall and pelvic cavity, making it difficult to identify small lesions and fully assess the condition.

Want to go on an unforgettable trip? Abstract Submission closing soon! Exciting news from SnT, Interdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg! We are thrilled to announce the 1st European Interstellar Symposium in collaboration with esteemed partners like the Interstellar Research Group, Initiative & Institute for Interstellar Studies, Breakthrough Prize Foundation, and Luxembourg Space Agency. This interdisciplinary symposium will delve into the profound questions surrounding interstellar travel, exploring topics such as human and robotic exploration, propulsion, exoplanet research, life support systems, and ethics. Join us to discuss how these insights will impact near-term applications on Earth and in space, covering technologies like optical communications, ultra-lightweight materials, and artificial intelligence. Don’t miss this opportunity to connect with a community of experts and enthusiasts, all united in a common goal. Check out the “Call for Papers” link in the comment section to secure your spot! Image credit: Maciej Rębisz, Science Now Studio #interstellar #conference #Luxembourg #exoplanet

From Google, Johns Hopskins, & Oxford LLMs achieve adult human performance on higher-order theory of mind tasks.

From google, johns hopskins, & oxford.

LLMs achieve adult human performance on higher-order theory of mind tasks https://huggingface.co/papers/2405.

This paper examines the extent to which large language models (LLMs) have developed higher-order theory of mind (ToM); the human ability to…