/ en-us Â鶹ÒùÔº internet news portal provides the latest news on science including: Â鶹ÒùÔºics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. When children lose their baby teeth, there is an adult set already growing beneath the gums, ready to emerge. But if we lose our permanent teeth, there aren't any more waiting in the wings. Right now, the options for replacing these lost teeth are either dentures or titanium implants, neither of which provide the same function and feedback as a real, living tooth. /news/2025-04-pigs-regrow-adult-teeth-humans.html Cell & Microbiology Biotechnology Fri, 25 Apr 2025 17:05:20 EDT news664819509 The sugar glucose, which is the main source of energy in almost every living cell, has been revealed in a Stanford Medicine study to also be a master regulator of tissue differentiation—the process by which stem cells give rise to specialized cells that make up all the body's tissues. /news/2025-03-glucose-life-reveals-role-master.html Cell & Microbiology Molecular & Computational biology Wed, 26 Mar 2025 12:02:00 EDT news662209316 The cells in human bodies are subject to both chemical and mechanical forces. But until recently, scientists have not understood much about how to manipulate the mechanical side of that equation. That's about to change. /news/2025-03-mechanical-encode-function-cells-fibrosis.html Cell & Microbiology Molecular & Computational biology Mon, 24 Mar 2025 14:16:04 EDT news662044561 How does the armored tiling on shark and ray cartilage maintain a continuous covering as the animals' skeletons expand during growth? /news/2025-03-stingrays-reveal-nature-elegant-solution.html Plants & Animals Molecular & Computational biology Tue, 18 Mar 2025 14:36:03 EDT news661527361 Xolography is a novel light printing technique that has been explored for dental products and in-space manufacturing. At Eindhoven University of Technology (TU/e), this technique has now been adapted to 3D print living cells. This research can pave the way for 3D-printed kidneys and muscle tissue. The team pioneered the Xolography-based method to produce tiny structures with features as small as 20 µm—approximately the size of a human cell. /news/2025-02-xolography-based-method-enables-3d.html Cell & Microbiology Biotechnology Thu, 27 Feb 2025 15:55:28 EST news659894124 Apical periodontitis, a chronic and hard-to-treat dental infection, affects more than half of the population worldwide and is the leading cause of tooth loss. Root canal is the standard treatment, but existing approaches to treat the infection have many limitations that can cause complications, leading to treatment failure. /news/2025-02-nanoparticles-treatment-root-canal-infection.html Bio & Medicine Nanomaterials Mon, 24 Feb 2025 12:31:04 EST news659622661 For many years, it was widely believed that fossils no longer contained any original organic molecules as the fossilization process was thought to destroy them. /news/2025-01-discovery-collagen-fossil-bone-insights.html Paleontology & Fossils Fri, 31 Jan 2025 11:38:04 EST news657545882 Hidden within our bones, marrow sustains life by producing billions of blood cells daily, from oxygen-carrying red cells to immune-boosting white cells. This vital function is often disrupted in cancer patients undergoing chemotherapy or radiation, which can damage the marrow and lead to dangerously low white cell counts, leaving patients vulnerable to infection. /news/2025-01-nature-blueprint-scientists-replicate-bone.html Cell & Microbiology Biotechnology Thu, 30 Jan 2025 08:57:07 EST news657449821 As astronauts venture further into space, their exposure to harmful radiation rises. Researchers from Columbia University are simulating the effects of space radiation here on Earth to determine its impact on human physiology using multi-organ tissue chips. Their work documents the differential effects seen in tissues after acute and prolonged radiation exposure and identifies multiple genes of interest that could help inform the development of future radioprotective agents. /news/2024-12-astronaut-chip-multi-tissue-chips.html Biotechnology Wed, 18 Dec 2024 16:17:02 EST news653761015 When a vertebrate embryo develops, a group of cells self-organizes into the neural tube, eventually becoming the brain and the spinal cord. This involves specific signals, but how these signals are interpreted by developing cells remains unclear. A team of researchers at the Institute of Science and Technology Austria (ISTA) now has more insights—thanks to miniature 2D organs and rubbery silicone molds. /news/2024-11-tissue-temporally.html Cell & Microbiology Molecular & Computational biology Wed, 27 Nov 2024 12:30:04 EST news651933001 The efficient use of cellulose—the primary plant scaffold and a major natural building block—could address many issues associated with petroleum-based polymers across various industries. In the search for more sustainable uses of cellulose, Lithuanian scientists have developed a production method for a nanofibrous cellulose matrix, which has the potential to replace non-renewable industrial even in biomedical applications. /news/2024-10-eco-friendly-nanofibrous-cellulose-matrix.html Bio & Medicine Nanomaterials Wed, 30 Oct 2024 15:09:04 EDT news649519741 A recent discovery has found a possible avenue to improve human health by better understanding how to engineer human stem cell differentiation. /news/2024-10-pathway-discovery-faster-reliable-human.html Cell & Microbiology Biotechnology Thu, 10 Oct 2024 16:25:26 EDT news647796322 For centuries, civilizations have used naturally occurring, inorganic materials for their perceived healing properties. Egyptians thought green copper ore helped eye inflammation, the Chinese used cinnabar for heartburn, and Native Americans used clay to reduce soreness and inflammation. /news/2024-05-ancient-medicine-blends-modern-day.html Biotechnology Molecular & Computational biology Thu, 30 May 2024 11:10:48 EDT news636286244 Natural materials like bone, bird feathers and wood have an intelligent approach to physical stress distribution, despite their irregular architectures. However, the relationship between stress modulation and their structures has remained elusive. /news/2024-05-programmable-materials-broken-bones.html Analytical Chemistry Materials Science Tue, 21 May 2024 13:34:41 EDT news635517278 Medical implants could fail less often when coated with a microscopically crinkled, ceramic material designed by researchers at the University of Michigan. The coating is described in a paper published in ACS Applied Materials and Interfaces. /news/2024-04-crinkled-coatings-medical-implants.html Nanomaterials Wed, 24 Apr 2024 11:03:20 EDT news633175396 In a recent study published in Science Advances, researchers from Nanjing Drum Tower Hospital and others have unveiled a promising approach for treating osteoarthritis (OA) using engineered magnesium oxide (MgO) nanoparticles. /news/2024-03-mgo-nanoparticles-path-synergistic-cartilage.html Bio & Medicine Nanomaterials Thu, 14 Mar 2024 13:14:08 EDT news629640846 Fat tissue holds the key to 3D printing layered living skin and potentially hair follicles, according to researchers who recently harnessed fat cells and supporting structures from clinically procured human tissue to precisely correct injuries in rats. The advancement could have implications for reconstructive facial surgery and even hair growth treatments for humans. /news/2024-03-3d-skin-wounds-hair-follicle.html Cell & Microbiology Biotechnology Mon, 04 Mar 2024 06:54:07 EST news628757596 Hydrogels are versatile biomaterials conquering an increasing number of biomedical areas. Consisting of water-swollen molecular networks that can be tailored to mimic the mechanical and chemical features of various organs and tissues, they can interface within the body and on its outer surfaces without causing any damage to even the most delicate parts of the human anatomy. /news/2024-02-scientists-method-bond-hydrogels-polymeric.html Biochemistry Polymers Mon, 19 Feb 2024 15:00:01 EST news627557665 Scientists have combined laser 3D printing technology and an alternate soaking process to construct complex 3D structures that mimic bone microstructure. This is the first demonstration of this fabrication method, and it will lead to the development of 3D cell culture systems that can support bone grafts or create artificial bone marrow. /news/2024-02-team-fabrication-method-3d-mimic.html Biochemistry Polymers Mon, 12 Feb 2024 16:20:04 EST news626977201 Is it possible to grow tissue in the laboratory, for example to replace injured cartilage? At TU Wien (Vienna), an important step has now been taken toward creating replacement tissue in the lab—using a technique that differs significantly from other methods used around the world. The study is published in Acta Biomaterialia. /news/2024-02-approach-artificial-cartilage-3d.html Bio & Medicine Nanomaterials Mon, 12 Feb 2024 10:57:03 EST news626957821 Bone regeneration is a complex process, and existing methods to aid regeneration including transplants and growth factor transmissions face limitations such as the high cost. But recently, a piezoelectric material that can promote the growth of bone tissue has been developed. /news/2024-02-bone-bandage-material-bones.html Analytical Chemistry Materials Science Thu, 01 Feb 2024 09:38:59 EST news626002736 Most people can relate to having a laptop charger break right where the flexible cable meets the solid adapter. This is just one example of how difficult it is to effectively interface hard and soft materials. Using a unique 3D printing process, TU Delft researchers produced hybrid multi-material interfaces that reached a remarkable closeness to nature's design of bone–tendon connections. Their research findings, recently published in Nature Communications, have numerous potential applications. /news/2023-12-optimization-hardsoft-material-interfaces-3d.html Polymers Materials Science Tue, 12 Dec 2023 10:59:42 EST news621601180 Using lasers rather than scalpels and saws has many benefits in surgery. Yet they are only used in isolated cases. But that could be about to change: laser systems are getting smarter and better all the time, as a research team from the University of Basel demonstrates. /news/2023-12-bone-smart-lasers.html Optics & Photonics Tue, 05 Dec 2023 14:28:15 EST news621008892 There are young children celebrating the holidays this year with their families, thanks to the 3D-printed medical devices created in the lab of Georgia Tech researcher Scott Hollister. For more than 10 years, Hollister and his collaborators have developed lifesaving, patient-specific airway splints for babies with rare birth defects. /news/2023-11-architected-auxetics-flexibility-3d.html Polymers Analytical Chemistry Thu, 30 Nov 2023 11:58:48 EST news620567925 Researchers at PSI and ETH Zurich have taken connective tissue cells that have been mechanically reprogrammed to resemble stem cells and transplanted them into damaged skin. In their laboratory experiment, they were able to show that this can promote wound healing. /news/2023-11-reprogramming-tissue-mechanically-wound.html Cell & Microbiology Biotechnology Tue, 28 Nov 2023 10:43:17 EST news620390592 A research group from the University of Turku and Turku Bioscience Center together with Misvik Biology Ltd in Finland have developed a new method for studying how cancer cells function in softer and stiffer tissue environments. This insight challenges the existing paradigm, opening up new possibilities for research in cancer biology and tissue engineering. The results of the study have been published in PNAS. /news/2023-10-secrets-cell-behavior-soft-substrates.html Cell & Microbiology Biotechnology Wed, 18 Oct 2023 10:31:03 EDT news616843861 A tiny molecular structure that looks like a bubble may be able to significantly improve medical imaging, according to a Penn State research team. Called gas vesicles (GVs), these structures are naturally produced by certain microorganisms and are responsible for controlling the microorganism's buoyancy in water. Researchers can genetically engineer human cells to produce these gas vesicles, resulting in an ultrasound contrast medium capable of revealing deep tissue structures at the resolution of a single cell. /news/2023-09-approach-cells-enable-molecular-medical.html Biotechnology Molecular & Computational biology Tue, 19 Sep 2023 06:19:00 EDT news614322952 A study published in npj Microgravity, finds an engineered compound given to mice aboard the International Space Station (ISS) largely prevented the bone loss associated with time spent in space. /news/2023-09-compound-bone-loss-space.html Space Exploration Mon, 18 Sep 2023 10:32:54 EDT news614251970 A team of bioengineers and biomedical scientists from the University of Sydney and the Children's Medical Research Institute (CMRI) at Westmead have used 3D photolithographic printing to create a complex environment for assembling tissue that mimics the architecture of an organ. /news/2023-08-method-future-3d-human-tissues.html Biotechnology Fri, 11 Aug 2023 06:43:15 EDT news610954988 In a step forward in the development of genetic medicines, researchers at Children's Hospital of Philadelphia (CHOP) and the Perelman School of Medicine at the University of Pennsylvania have developed a proof-of-concept model for delivering gene editing tools to treat blood disorders, allowing for the modification of diseased blood cells directly within the body. /news/2023-07-scientists-vivo-rna-based-gene-blood.html Biotechnology Molecular & Computational biology Thu, 27 Jul 2023 14:00:01 EDT news609672100