PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Small numbers of cells in a tumor could be key enablers of cancer metastasis

2021-06-16
(Press-News.org) WASHINGTON --Just a small number of cells found in tumors can enable and recruit other types of cells nearby, allowing the cancer to spread to other parts of the body, report END


ELSE PRESS RELEASES FROM THIS DATE:

Natural killers: Using the body's cells to target breast cancer

Natural killers: Using the bodys cells to target breast cancer
2021-06-16
It sounds like a plot from a Quentin Tarantino movie -- something sets off natural killers and sends them on a killing spree. But instead of characters in a movie, these natural killers are part of the human immune system and their targets are breast cancer tumor cells. The triggers are fusion proteins developed by Clemson University researchers that link the two together. "The idea is to use this bifunctional protein to bridge the natural killer cells and breast cancer tumor cells," said Yanzhang (Charlie) Wei, a professor in the College of Science's Department of Biological Sciences. "If the two cells are brought close enough together through this receptor ligand connection, the natural killer cells can release what I call killing machinery to have the tumor cells killed." It's ...

Poison frog tadpoles can survive (almost) anywhere

Poison frog tadpoles can survive (almost) anywhere
2021-06-16
A group of researchers from the University of Jyvaskyla and Stanford University were part of an expedition to French Guiana to study tropical frogs in the Amazon. Various amphibian species of this region use ephemeral pools of water as their nurseries, and display unique preferences for specific physical and chemical characteristics. Despite species-specific preferences, researchers were surprised to find tadpoles of the dyeing poison frog surviving in an incredible range of both chemical (pH 3-8) and vertical (0-20 m in height) deposition sites. This research was published in the journal Ecology and Evolution in June 2021. Neotropical frogs are special because, unlike species in temperate regions, many tropical frogs ...

Measuring the elimination of plastic particles from the body in mice

Measuring the elimination of plastic particles from the body in mice
2021-06-16
Postdoctoral Researcher Outi Keinänen from the University of Helsinki developed a method to radiolabel plastic particles in order to observe their biodistribution on the basis of radioactivity with the help of positron emission tomography (PET). As a radiochemist, Keinänen has in her previous radiopharmaceutical studies utilised PET imaging combined with computed tomography (CT), which produces a very accurate image of the anatomical location of the radioactivity signal. In the recently completed study, radiolabelled plastic particles were fed to mice, and their elimination from the body was followed with PET-CT scans. This was the first time that ...

'Overly stringent' criteria early in the pandemic led to missed diagnoses of COVID-19

2021-06-16
Research published today in the Journal of General Virology has identified missed cases of SARS-CoV-2 by retrospective testing of throat swabs. Researchers at the University of Nottingham screened 1,660 routine diagnostic specimens which had been collected at a Nottingham hospital between 2 January and 11 March 2020 and tested for SARS-CoV-2 by PCR. At this stage of the pandemic, there was very little COVID-19 testing available in hospitals, and to qualify patients had to meet a strict criterion, including recent travel to certain countries in Asia or contact with a known positive case. Three previously unidentified cases of SARS-CoV-2 infection were identified by the retrospective screening, including one from a 75-year-old ...

Quantum-nonlocality at all speeds

Quantum-nonlocality at all speeds
2021-06-16
The phenomenon of quantum nonlocality defies our everyday intuition. It shows the strong correlations between several quantum particles some of which change their state instantaneously when the others are measured, regardless of the distance between them. While this phenomenon has been confirmed for slow moving particles, it has been debated whether nonlocality is preserved when particles move very fast at velocities close to the speed of light, and even more so when those velocities are quantum mechanically indefinite. Now, researchers from the University of Vienna, the Austrian Academy of Sciences and the Perimeter Institute report in the latest issue of Physical Review Letters that ...

Particles with 'eyes' allow a closer look at rotational dynamics

Particles with eyes allow a closer look at rotational dynamics
2021-06-16
Tokyo, Japan - Colloids--mixtures of particles made from one substance, dispersed in another substance--crop up in numerous areas of everyday life, including cosmetics, food and dyes, and form important systems within our bodies. Understanding the behavior of colloids therefore has wide-ranging implications, yet investigating the rotation of spherical particles has been challenging. Now, an international team including researchers from The University of Tokyo Institute of Industrial Science has created particles with an off-center core or "eye" that can be tracked ...

CNIO researchers find molecular switch that allows organisms to adapt to fasting conditions

CNIO researchers find molecular switch that allows organisms to adapt to fasting conditions
2021-06-16
Getting energy and nutrients from the environment - that is, eating - is such an important function that it has been regulated through sophisticated mechanisms over hundreds of millions of years. Some of these mechanisms are only now beginning to be unravelled. A group at the Spanish National Cancer Research Centre (CNIO) has found one of their key components - a switch that controls the ability of organisms to adapt to low cellular nutrient levels. The protein involved is RagA, which is part of the mTOR molecular pathway, whose importance in metabolic activity regulation has been known for decades now. CNIO researchers have found that if RagA is continuously activated, cells do not know that there are no sufficient nutrients and so ...

A backdoor in mobile phone encryption from the 90s still exists

A backdoor in mobile phone encryption from the 90s still exists
2021-06-16
The encryption algorithm GEA-1 was implemented in mobile phones in the 1990s to encrypt data connections. Since then, it has been kept secret. Now, a research team from Ruhr-Universität Bochum (RUB), together with colleagues from France and Norway, has analysed the algorithm and has come to the following conclusion: GEA-1 is so easy to break that it must be a deliberately weak encryption that was built in as a backdoor. Although the vulnerability is still present in many modern mobile phones, it no longer poses any significant threat to users, according to the researchers. Backdoors not useful according to researchers "Even though intelligence services and ministers of the interior understandably want such backdoors ...

Bacteria used to clean diesel-polluted soil in Greenland

Bacteria used to clean diesel-polluted soil in Greenland
2021-06-16
ENVIRONMENT Diesel-polluted soil from now defunct military outposts in Greenland can be remediated using naturally occurring soil bacteria according to an extensive five-year experiment in Mestersvig, East Greenland, to which the University of Copenhagen has contributed. Mothballed military outposts and stacks of rusting oil drums aren't an unusual sight in Greenland. Indeed, there are about 30 abandoned military installations in Greenland where diesel, once used to keep generators and other machinery running, may have seeped into the ground. This is the case with Station 9117 Mestersvig, an abandoned military airfield ...

How long-known genes continue to surprise researchers

2021-06-16
These findings were published in the journal Cellular and Molecular Life Sciences on 8 June 2021. Huge splicing diversity in the brain The human genome was sequenced around 20 years ago. Since then, the sequence information encoding our proteins is known - at least in principle. However, this information is not continuously stored in the individual genes, but is divided into smaller coding sections. These coding sections, also known as exons, are assembled in a process called splicing. Depending on the gene, different exon combinations are possible, which is why they are referred to as different or ...

LAST 30 PRESS RELEASES:

Scientists trace origins of now extinct plant population from volcanically active Nishinoshima

AI algorithm based on routine mammogram + age can predict women’s major cardiovascular disease risk

New hurdle seen to prostate screening: primary-care docs

MSU researchers explore how virtual sports aid mental health

Working together, cells extend their senses

Cheese fungi help unlock secrets of evolution

Researchers find brain region that fuels compulsive drinking

Mental health effects of exposure to firearm violence persist long after direct exposure

Research identifies immune response that controls Oropouche infection and prevents neurological damage

University of Cincinnati, Kent State University awarded $3M by NSF to share research resources

Ancient DNA reveals deeply complex Mastodon family and repeated migrations driven by climate change

Measuring the quantum W state

Researchers find a way to use antibodies to direct T cells to kill Cytomegalovirus-infected cells

Engineers create mini microscope for real-time brain imaging

Funding for training and research in biological complexity

The Journal of Nuclear Medicine Ahead-of-Print Tip Sheet: September 12, 2025

ISSCR statement on the scientific and therapeutic value of human fetal tissue research

Novel PET tracer detects synaptic changes in spinal cord and brain after spinal cord injury

Wiley advances Knowitall Solutions with new trendfinder application for user-friendly chemometric analysis and additional enhancements to analytical workflows

Benchmark study tracks trends in dog behavior

OpenAI, DeepSeek, and Google vary widely in identifying hate speech

Research spotlight: Study identifies a surprising new treatment target for chronic limb threatening ischemia

Childhood loneliness and cognitive decline and dementia risk in middle-aged and older adults

Parental diseases of despair and suicidal events in their children

Acupuncture for chronic low back pain in older adults

Acupuncture treatment improves disabling effects of chronic low back pain in older adults

How interstellar objects similar to 3I/ATLAS could jump-start planet formation around infant stars

Rented e-bicycles more dangerous than e-scooters in cities

Ditches as waterways: Managing ‘ditch-scapes’ to strengthen communities and the environment

In-situ molecular passivation enables pure-blue perovskite LEDs via vacuum thermal evaporation

[Press-News.org] Small numbers of cells in a tumor could be key enablers of cancer metastasis