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Archive for the ‘biological’ category: Page 2

Dec 12, 2024

‘Unprecedented risk’ to life on Earth: Scientists call for halt on ‘mirror life’ microbe research

Posted by in category: biological

Real life modern Frankenstein.


World-leading scientists have called for a halt on research to create “mirror life” microbes amid concerns that the synthetic organisms would present an “unprecedented risk” to life on Earth.

The international group of Nobel laureates and other experts warn that mirror bacteria, constructed from mirror images of molecules found in nature, could become established in the environment and slip past the immune defences of natural organisms, putting humans, animals and plants at risk of lethal infections.

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Dec 12, 2024

3D printable bioreactor designs to support space nutrition

Posted by in categories: bioengineering, biological, space travel

NASA’s Synthetic Biology Project is collaborating with the GrabCAD community to create innovative 3D-printable bioreactor designs. These bioreactors aim to reduce the mass and volume of supplies needed for extended space missions by enabling in-situ production of essential nutrients through reusable or recyclable solutions.

The project focuses on enhancing BioNutrient Production Packs, which use bio-engineered microorganisms to generate critical nutrients like beta carotene. Crews activate these microorganisms by adding water and growth media to dormant cultures. The existing bioreactors include early polycarbonate Gen-0 models and lightweight Gen-1 soft packs. Both designs allow gas exchange to prevent over-pressurization while ensuring safe nutrient production.

NASA seeks to address key challenges for long-duration missions, including designing bioreactors that are either reusable or recyclable and can be manufactured aboard spacecraft. The bioreactor must safely handle liquid cultures, support gas exchange, and be compatible with additive manufacturing technologies. Reusability designs must consider sterilization challenges, while recyclable designs should use materials that can be reprocessed into new bioreactors.

Dec 11, 2024

Centromeres could be ‘hotspots’ for evolutionary innovation

Posted by in categories: biological, genetics

New research reveals that centromeres, which are responsible for proper cell division, can rapidly reorganize over short time scales. Biologists at the University of Rochester are calling a discovery they made in a mysterious region of the chromosome known as the centromere a potential game-changer in the field of chromosome biology.

“We’re really excited about this work,” says Amanda Larracuente, the Nathaniel and Helen Wisch Professor of Biology, whose lab oversaw the research that led to the findings, which appear in PLOS Biology.

The discovery involves an intricate and seemingly carefully choreographed genetic tug-of-war between elements in the centromere, which is responsible for proper cell division. Instead of storing genes, centromeres anchor proteins that move chromosomes around the cell as it splits. If a centromere fails to function, cells may divide with too few or too many chromosomes.

Dec 10, 2024

Scientists Discover Radio-Like Communication in Ancient Bacteria

Posted by in categories: biological, physics

Cyanobacteria use an AM radio-like principle to coordinate cell division with circadian rhythms, encoding information through pulse amplitude modulation.

Cyanobacteria, an ancient group of photosynthetic bacteria, have been discovered to regulate their genes using the same physics principle used in AM radio transmission.

New research published in Current Biology has found that cyanobacteria use variations in the amplitude (strength) of a pulse to convey information in single cells. The finding sheds light on how biological rhythms work together to regulate cellular processes.

Dec 9, 2024

Scientists Think Earth’s First Life Forms Were Basically Born in a Hot Tub

Posted by in category: biological

Early biology may not have been an ocean exclusive.

Dec 6, 2024

Prof. Carlos Duarte, Ph.D. — Executive Director, Coral Research & Development Accelerator Platform

Posted by in categories: bioengineering, biological, climatology, sustainability

Professor Carlos Duarte, Ph.D. is Distinguished Professor, Marine Science, and Executive Director, Coral Research \& Development Accelerator Platform (CORDAP — https://cordap.org/), Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST — https://www.kaust.edu.sa/en/study/fac…), in Saudi Arabia, as well as Chief Scientist of Oceans2050, OceanUS, and E1Series.

Prior to these roles Professor Duarte was Research Professor with the Spanish National Research Council (CSIC) and Director of the Oceans Institute at The University of Western Australia. He also holds honorary positions at the Arctic Research Center in Aarhus University, Denmark and the Oceans Institute at The University of Western Australia.

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Dec 6, 2024

Primate study sheds light on a neural mechanism that separates signal from noise in the brain

Posted by in categories: biological, robotics/AI

When the brain is observed through imaging, there is a lot of “noise,” which is spontaneous electrical activity that comes from a resting brain. This appears to be different from brain activity that comes from sensory inputs, but just how similar—or different—the noise is from the signal has been a matter of debate.

New research led by a team at the University of Tokyo further untangles the relationship between internally generated noise and stimulus-related patterns in the brain, and finds that the patterns of spontaneous activity and stimulus-evoked response are similar in lower visual areas of the cerebral cortex, but gradually become independent, or “orthogonal,” as one moves from lower to higher visual areas.

The findings not only enhance our understanding of the mechanism that enables the brain to distinguish between signal and noise, but could also provide clues for developing noise-resistant incorporating a mechanism similar to that found in the biological brain. The study is published in the journal Nature Communications.

Dec 6, 2024

Meta-analysis of hunter–gatherer societies shows remarkable physical abilities of both genders

Posted by in category: biological

A trio of archaeologists at the University of Cambridge, in the U.K. conducted a study of hundreds of papers outlining research into hunter–gatherer societies, finding that people in such groups engage in a variety of physical activities. George Brill, Marta Mirazon-Lahr and Mark Dyble published their paper in the journal Proceedings of the Royal Society B: Biological Sciences.

For much of history, male physical and athletic prowess has been considered to be important, while female physical prowess has been mostly overlooked. In this new study, the research team wondered if female physical prowess has also been overlooked in a hunter–gatherer context.

To find out, they conducted a study focusing on research efforts into hunter–gatherer societies—both those in the past and those still in existence today. In all, they looked at more than 900 papers, focusing most specifically on physical or athletic activities of people of both genders.

Dec 6, 2024

A rising danger in the Arctic

Posted by in categories: biological, climatology, sustainability

As climate change melts permafrost, microbes will emerge. The world isn’t paying enough attention to the potential threat they pose.

Dec 6, 2024

Disagreement on foundational principles of biological aging

Posted by in categories: biological, life extension

Abstract. To gain insight into how researchers of aging perceive the process they study, we conducted a survey among experts in the field. While highlighting some common features of aging, the survey exposed broad disagreement on the foundational issues. What is aging? What causes it? When does it begin? What constitutes rejuvenation? Not only was there no consensus on these and other core questions, but none of the questions received a majority opinion—even regarding the need for consensus itself. Despite many researchers believing they understand aging, their understanding diverges considerably. Importantly, as different processes are labeled as “aging” by researchers, different experimental approaches are prioritized. The survey shed light on the need to better define which aging processes this field should target and what its goals are. It also allowed us to categorize contemporary views on aging and rejuvenation, revealing critical, yet largely unanswered, questions that appear disconnected from the current research focus. Finally, we discuss ways to address the disagreement, which we hope will ultimately aid progress in the field.

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