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Category: bioengineering – Page 43

Researchers develop artificial cell environment to promote nerve regeneration

Injuries in the central nervous system heal poorly because cavities scar. Researchers hope to remedy this problem by filling the cavities in such a way that stem cells feel comfortable in them.

Researchers from Bochum and Dortmund have created an artificial cell environment that could promote the regeneration of nerves. Usually, injuries to the brain or spinal cord don’t heal easily due to the formation of fluid-filled cavities and scars that prevent tissue regeneration. One starting point for medical research is therefore to fill the cavities with a substance that offers neural stem cells optimal conditions for proliferation and differentiation. The team from Ruhr University Bochum and TU Dortmund University, both in Germany, showed that positively charged hydrogels can promote the survival and growth of stem cells.

Dr. Kristin Glotzbach and Professor Andreas Faissner from the Department of Cell Morphology and Molecular Neurobiology in Bochum cooperated with Professor Ralf Weberskirch and Dr. Nils Stamm from the Faculty of Chemistry and Chemical Biology at TU Dortmund University. The team describes the findings in the American Chemical Society Journal Biomaterials Science and Engineering from January 16, 2024.

Self-propelling nanobots shrink bladder tumours in mice by 90%

Imagine an army of self-propelling, radioisotope-covered particles 2,500 to 10,000 times smaller than a speck of dust that, upon injection into the body, search for and attach themselves to cancerous tumours, destroying them. Sounds like science fiction? Not so for mice with bladder cancer.

Researchers in Spain report that nanoparticles containing radioactive iodine and which propel themselves upon reaction with urea have the ability to distinguish cancerous bladder tumours from healthy tissue. These “nanobots” penetrate the tumour’s extracellular matrix and accumulate within it, enabling the radionuclide therapy to reach its precise target. In a study conducted at the Institute for Bioengineering of Catalonia (IBEC) in Barcelona, mice receiving a single dose of this treatment had a 90% reduction in the size of bladder tumours compared with untreated animals.

This novel approach may one day revolutionize the treatment of bladder cancer. Bladder cancer is the tenth most common cancer in the world, with over 600,000 new cases diagnosed in 2022 and more than 220,000 deaths globally, according to the World Health Organization’s Global Cancer Observatory.

Junk DNA in birds may hold key to safe, efficient gene therapy

The recent approval of a CRISPR-Cas9 therapy for sickle cell disease demonstrates that gene editing tools can do a superb job of knocking out genes to cure hereditary disease. But it’s still not possible to insert whole genes into the human genome to substitute for defective or deleterious genes.

A new technique that employs a retrotransposon from birds to insert genes into the genome holds more promise for , since it inserts genes into a “safe harbor” in the human genome where the insertion won’t disrupt essential genes or lead to cancer.

Retrotransposons, or retroelements, are pieces of DNA that, when transcribed to RNA, code for enzymes that copy RNA back into DNA in the genome—a self-serving cycle that clutters the genome with retrotransposon DNA. About 40% of the human genome is made up of this “selfish” new DNA, though most of the genes are disabled, so-called junk DNA.

Genetically Altering Living Organisms

Genetic Engineering and DNA alteration is an emerging technology with huge ramifications in the future, including potentially altering the DNA of adult humans, not just embryos or plants \& animals.
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Credits:
DNA Manipulation in Living Subjects (original title)
Genetically Altering Living Organisms.
Episode 227; Feb 27, 2020

Writers:
Isaac Arthur.

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20 Emerging Technologies That Will Change The World

This video explores 20 emerging technologies and their future. Watch this next video about the 10 stages of AI: • The 10 Stages of Artificial Intelligence.
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💡 Future Business Tech explores the future of technology and the world.

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• Genetic Engineering.

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This video explores 20 emerging technologies and their future. Other related terms: ai, artificial intelligence, future business tech, future technology, future tech, future business technologies, future technologies, artificial general intelligence, artificial superintelligence, superintelligence, future city, radical life extension, crisp, quantum computer, neuralink, humanoid robot, generative ai, starlink, nanotechnology, smart cities, mixed reality, autonomous vehicles, blockchain, lab grown meat, smart home, fusion power, space tourism, artificial wombs, etc.

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CRISPR-COPIES: New Tool Accelerates and Optimizes Genome Editing

CRISPR/Cas systems have undergone tremendous advancement in the past decade. These precise genome editing tools have applications ranging from transgenic crop development to gene therapy and beyond. And with their recent development of CRISPR-COPIES, researchers at the Center for Advanced Bioenergy and Bioproducts Innovation (CABBI) are further improving CRISPR’s versatility and ease of use.

“CRISPR-COPIES is a tool that can quickly identify appropriate chromosomal integration sites for genetic engineering in any organism,” said Huimin Zhao, CABBI Conversion Theme Leader and Steven L. Miller Chair of Chemical and Biomolecular Engineering (ChBE) at the University of Illinois. “It will accelerate our work in the metabolic engineering of non-model yeasts for cost-effective production of chemicals and biofuels.”

Gene editing has revolutionized scientists’ capabilities in understanding and manipulating genetic information. This form of genetic engineering allows researchers to introduce new traits into an organism, such as resistance to pests or the ability to produce a valuable biochemical.

CRISPR gene editing gets a revolutionary upgrade with new tool

In the realm of scientific innovation, the past decade has seen the CRISPR/Cas systems emerge as a groundbreaking tool in genome editing, boasting applications that span from enhancing crop yields to pioneering gene therapy.

The recent advent of CRISPR-COPIES by the Center for Advanced Bioenergy and Bioproducts Innovation (CABBI) marks a significant leap forward, refining CRISPR’s flexibility and user-friendliness.

CRISPR-COPIES represents a cutting-edge solution designed to swiftly pinpoint ideal chromosomal sites for genetic modification across any species.

Debate simmers over when doctors should declare brain death

Benjamin Franklin famously wrote: “In this world nothing can be said to be certain, except death and taxes.” While that may still be true, there’s a controversy simmering today about one of the ways doctors declare people to be dead.

Bioethicists, doctors and lawyers are weighing whether to redefine how someone should be declared dead. A change in criteria for brain death could have wide-ranging implications for patients’ care.