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Archive for the ‘nanotechnology’ category: Page 177

Sep 7, 2020

Applications of Inorganic Nanomaterials in Photothermal Therapy Based on Combinational Cancer Treatment

Posted by in categories: biotech/medical, nanotechnology, quantum physics

Methods: In this review, due to their promise, we focus on inorganic nanomaterials [such as hollow mesoporous silica nanoparticles (HMSNs), tungsten sulfide quantum dots (WS2QDs), and gold nanorods (AuNRs)] combining PTT with CHT, RT or IT in one treatment, aiming to provide a comprehensive understanding of PTT-based combinational cancer therapy. Results: This review found much evidence for the use of inorganic nanoparticles for PTT-based combinational cancer therapy. Conclusion: Under synergistic effects, inorganic nanomaterial-based combinational treatments exhibit enhanced therapeutic effects compared to PTT, CHT, RT, IT or PDT alone and should be further investigated in the cancer field.


Applications of inorganic nanomaterials in photothermal therapy based on combinational cancer treatment — pubmed.

Sep 5, 2020

Low-temperature plasma device may lead to more efficient engines

Posted by in categories: biotech/medical, food, nanotechnology

Low-temperature plasmas offer promise for applications in medicine, water purification, agriculture, pollutant removal, nanomaterial synthesis and more. Yet making these plasmas by conventional methods takes several thousand volts of electricity, says David Go, an aerospace and mechanical engineer at the University of Notre Dame. That limits their use outside high-voltage power settings.

In work supported by the U.S. National Science Foundation, Go and a team of researchers conducted research that explores making plasma devices that can be operated without electrical power—they need only human or .

Their paper in Applied Physics Letters introduces a strategy the scientists call “energy-conversion plasma” as an alternative to producing “transient spark” discharges without the need for a very high-voltage power supply.

Sep 4, 2020

Nano particles for healthy tissue

Posted by in categories: biotech/medical, life extension, nanotechnology

“Eat your vitamins” might be replaced with “ingest your ceramic nano-particles” in the future as space research is giving more weight to the idea that nanoscopic particles could help protect cells from common causes of damage.

Oxidative stress occurs in our bodies when cells lose the natural balance of electrons in the molecules that we are made of. This is a common and constant occurrence that is part of our metabolism but also plays a role in the and several pathological conditions, such as heart failure, muscle atrophy and Parkinson’s disease.

The best advice for keeping your body in balance and avoiding oxidative stress is still to have a and eat enough vitamins, but nanoparticles are showing promising results in keeping cells in shape.

Sep 4, 2020

Melittin, a major peptide component of bee venom, and its conjugates in cancer therapy

Posted by in categories: biotech/medical, life extension, nanotechnology

Melittin (MEL), a major peptide component of bee venom, is an attractive candidate for cancer therapy. This agent has shown a variety of anti-cancer effects in preclinical cell culture and animal model systems. Despite a convincing efficacy data against variety of cancers, its applicability to humans has met with challenges due to several issues including its non-specific cytotoxicity, degradation and hemolytic activity. Several optimization approaches including utilization of nanoparticle based delivery of MEL have been utilized to circumvent the issues. Here, we summarize the current understanding of the anticancer effects of bee venom and MEL on different kinds of cancers. Further, we also present the available information for the possible mechanism of action of bee venom and/or MEL.

Keywords: Bee venom, Melittin, Melittin conjugates, Cancer management, Anti-cancer effects.

Cancer is one of the major ailment effecting humankind and remains as one of the leading causes of mortality worldwide. The current available data suggests that over 10 million new patients are diagnosed with the disease every year and over 6 million deaths are associated with it representing roughly 12% of worldwide deaths. Fifteen million new cancer cases are anticipated to be diagnosed in the year 2020 [1] which will potentially increase to over 20 million by 2025 [2] and more in years to come. It is also anticipated that the growth and aging of the population may increase the new cancer cases to 21.7 million with about 13 million cancer deaths by the year 2030 [3].

Sep 2, 2020

Mechano-bactericidal actions of nanostructured surfaces

Posted by in categories: biotech/medical, health, nanotechnology

Antibiotic resistance is a global human health threat, causing routine treatments of bacterial infections to become increasingly difficult. The problem is exacerbated by biofilm formation by bacterial pathogens on the surfaces of indwelling medical and dental devices that facilitate high levels of tolerance to antibiotics. The development of new antibacterial nanostructured surfaces shows excellent prospects for application in medicine as next-generation biomaterials. The physico-mechanical interactions between these nanostructured surfaces and bacteria lead to bacterial killing or prevention of bacterial attachment and subsequent biofilm formation, and thus are promising in circumventing bacterial infections. This Review explores the impact of surface roughness on the nanoscale in preventing bacterial colonization of synthetic materials and categorizes the different mechanisms by which various surface nanopatterns exert the necessary physico-mechanical forces on the bacterial cell membrane that will ultimately result in cell death.

Sep 1, 2020

Genetic Engineering, No Virus Required

Posted by in categories: bioengineering, biotech/medical, genetics, nanotechnology

Nature has spent millennia honing the virus into a ruthlessly efficient delivery vehicle for nucleic acids. Viruses have even been harnessed for our own delivery purposes. But some applications have had only mixed success. For example, commercial applications of genetic engineering, which require high scalability, low cost, and impeccable safety, remain a challenge.

Although they can easily enter the body and inject their payload into cells, viruses may stimulate a dangerous immune reaction and cause long-term medical complications. In addition, viruses can be expensive and time consuming to cultivate.

Safer and more practical alternatives to viruses are being sought by innovative companies. For example, these companies are developing nonviral gene delivery systems that incorporate nanoparticle formulations, ultrasound, and electric fields. These systems can slip bits of genetic material into cells efficiently and cost-effectively in a range of applications.

Sep 1, 2020

VRK-1 Protein Activation Increased Lifespan of Worms

Posted by in categories: biotech/medical, life extension, nanotechnology, robotics/AI, singularity

Brian Wang is a Futurist Thought Leader and a popular Science blogger with 1 million readers per month. His blog Nextbigfuture.com is ranked #1 Science News Blog. It covers many disruptive technology and trends including Space, Robotics, Artificial Intelligence, Medicine, Anti-aging Biotechnology, and Nanotechnology.

Known for identifying cutting edge technologies, he is currently a Co-Founder of a startup and fundraiser for high potential early-stage companies. He is the Head of Research for Allocations for deep technology investments and an Angel Investor at Space Angels.

A frequent speaker at corporations, he has been a TEDx speaker, a Singularity University speaker and guest at numerous interviews for radio and podcasts. He is open to public speaking and advising engagements.

Sep 1, 2020

A new platform for controlled delivery of key nanoscale drugs and more

Posted by in categories: biotech/medical, nanotechnology

MIT engineers have developed a novel platform for the controlled delivery of certain important drugs, nutrients, and other substances to human cells.


In work that could impact industries from pharmaceuticals to cosmetics, MIT engineers have developed a platform for the controlled delivery of drugs and more to human cells. The simple approach creates capsules containing nanoscale droplets loaded with an active ingredient.

Aug 25, 2020

Nano-diamond self-charging batteries could disrupt energy as we know it

Posted by in categories: information science, nanotechnology, nuclear energy, particle physics, sustainability, transportation

https://youtube.com/watch?v=ksMXbhftBbM

California company NDB says its nano-diamond batteries will absolutely upend the energy equation, acting like tiny nuclear generators. They will blow any energy density comparison out of the water, lasting anywhere from a decade to 28,000 years without ever needing a charge. They will offer higher power density than lithium-ion. They will be nigh-on indestructible and totally safe in an electric car crash. And in some applications, like electric cars, they stand to be considerably cheaper than current lithium-ion packs despite their huge advantages.

The heart of each cell is a small piece of recycled nuclear waste. NDB uses graphite nuclear reactor parts that have absorbed radiation from nuclear fuel rods and have themselves become radioactive. Untreated, it’s high-grade nuclear waste: dangerous, difficult and expensive to store, with a very long half-life.

Continue reading “Nano-diamond self-charging batteries could disrupt energy as we know it” »

Aug 24, 2020

Scientists Develop Nanophotonic 3D Printing for Virtual Reality Screens

Posted by in categories: 3D printing, government, mobile phones, nanotechnology, quantum physics, virtual reality, wearables

In Korea, scientists are turning to better ways for improving our screen time, and this means 3D printing something most of us know little about: quantum dots. Focusing on refining the wonders of virtual reality and other electronic displays even further, researchers from the Nano Hybrid Technology Research Center of Korea Electrotechnology Research Institute (KERI), a government-funded research institute under National Research Council of Science & Technology (NST) of the Ministry of Science and ICT (MSIT), have created nanophotonic 3D printing technology for screens. Meant to be used with virtual reality, as well as TVs, smartphones, and wearables, high resolution is achieved due to a 3D layout expanding the density and quality of the pixels.

Led by Dr. Jaeyeon Pyo and Dr. Seung Kwon Seol, the team has published the results of their research and development in “3D-Printed Quantum Dot Nanopixels.” While pixels are produced to represent data in many electronics, conventionally they are created with 2D patterning. To overcome limitations in brightness and resolution, the scientists elevated this previously strained technology to the next level with 3D printed quantum dots to be contained within polymer nanowires.