Biology News Net
RSS 2.0 Feed
Biotechnology

Category: Biotechnology

The new stem cell-containing bio ink allows 3D printing of living tissue, known as bio-printing.


The system consists of two newly developed programs that automatically identify the 3-D positions of target areas based on the signals from the scintillators (shown as white dots), and determine...
"Clock genes" turn on and off, or "Express", in rhythmic patterns throughout the body to regulate physiological conditions and behaviour. When and how these genes express, especially in tissues outside the brain, is still poorly understood. Until now, scientists have lacked sufficient means to simultaneously monitor gene rhythms in specific tissues in freely moving subjects.

Lychnopholide, a substance isolated from a Brazilian plant, and formulated as part of "nanocapsules" cured more than half of a group of mice that had been infected experimentally with Chagas disease parasites. "Chagas disease affects millions of people, mainly in poor rural areas of 21 Latin American countries," said Marta de Lana, PhD. The research is published in online ahead of print June 20 in Antimicrobial Agents and Chemotherapy, a journal of the American Society for Microbiology.


DNA damage caused by very low-energy electrons and OH-radicals formed upon irradiation of water by ultrashort pulses of very intense laser light.
In a recent development, scientists at the Tata Institute of Fundamental Research report that damage to DNA can be induced by ultrashort pulses of high intensity laser light. Published in Scientific Reports, these findings have important implications in clinical conditions, especially in reducing collateral damage to tissues surrounding the real target of conventional radiotherapy.

As a new tool in CRISPR genome editing, Cpf1 has sparked an explosion of interest for its attributes that differ from Cas9: It requires only a single RNA that CRISPR RNA assembly is simpler; its staggered cleavage patterns may facilitate substituting existing DNA with desired sequences; and it recognizes thymidine-rich DNA sequences, which has been less explored than the guanosine-rich sequences recognized by Cas9. In sum, Cpf1 is expected to broaden the scope of CRISPR genome editing target sites with enhanced efficiency. Despite Cpf1's vast potential as a powerful genome editing tool, little has been demonstrated as to how, specifically, the new tool finds its targets. In a series of two papers published online on June 6 in Nature Biotechnology, researchers at the IBS Center for Genome Editing in South Korea showed Cpf1 as a highly specific programmable tool that is suitable for precision genome editing and reported generation of mutant mice using CRISPR-Cpf1.

Researchers from Bochum have engineered a hydrogen-producing enzyme in the test tube that works as efficiently as the original. The protein - a so-called hydrogenase from green algae - is made up of a protein scaffold and a cofactor. The latter is the reaction centre where the substances that react with each other dock. When the researchers added various chemically synthesised substances to the protein scaffold, the cofactor spontaneously assembled.


This is the herringbone structure of the outer layer (impact region) of the mantis shrimp dactyl club.
The next generation of airplanes, body armor and football helmets crawled out from under a rock--literally.

The use of next-generation gene sequencing in newborns in neonatal intensive care units (NICUs) may improve the diagnosis of rare diseases and deliver results more quickly to anxious families, according to new research in CMAJ (Canadian Medical Association Journal).


Close-up of the MinION handheld DNA sequencer.
A team from the University of Leicester has been awarded a prize for their proposal to crack down on wildlife crime using a portable DNA sequencing device, the MinION - developed by Oxford Nanopore Technologies - to read the 'barcode genes' of animals affected by illegal trafficking.

CRISPRainbow, a new technology using CRISPR/Cas9 developed by scientists at UMass Medical School, allows researchers to tag and track up to seven different genomic locations in live cells. This labeling system, details of which were published in Nature Biotechnology, will be an invaluable tool for studying the structure of the genome in real time.


All the movies, images, emails and other digital data from more than 600 basic smartphones (10,000 gigabytes) can be stored in this faint pink smear of DNA.
Technology companies routinely build sprawling data centers to store all the baby pictures, financial transactions, funny cat videos and email messages its users hoard.

Researchers have developed a new and highly efficient method for gene transfer. The technique, which involves culturing and transfecting cells with genetic material on an array of carbon nanotubes, appears to overcome the limitations of other gene editing technologies.


The University of Georgia and Ben-Gurion University research team site-specifically inserted a small molecule named coralyne into the DNA and were able to create a single-molecule diode
Researchers at the University of Georgia and at Ben-Gurion University in Israel have demonstrated for the first time that nanoscale electronic components can be made from single DNA molecules. Their study, published in the journal Nature Chemistry, represents a promising advance in the search for a replacement for the silicon chip.


Professor Saso Ivanovski.
The discomfort and stigma of loose or missing teeth could be a thing of the past as Griffith University researchers pioneer the use of 3D bioprinting to replace missing teeth and bone.


A new study shows that a hollowed-out version of cowpea mosaic virus could be useful in human therapies.
Viruses aren't always bad. In fact, scientists can harness the capabilities of some viruses for good--modifying the viruses to carry drug molecules, for example.

Researchers have presented one of the first computerised tomography (CT) scans of a mummified individual from southern Africa, and also completed the first successful aDNA (ancient DNA) extraction from such remains. The mummy is estimated to have been about 300 years old.


This graphic depicts a new inhibitor, 6S, locking up an enzyme (red) to block the production of hydrogen sulfide (yellow and white).
Research teams separated by 14 hours and 9,000 miles have collaborated to advance prospective treatment for the world's second-leading cause of death.


Haoquan Wu, Ph.D., left, and Ying Dang, Ph.D., right, have improved the gene editing technology CRISPR and enhanced its ability to target and knockout genes.
Scientists have developed a process that improves the efficiency of CRISPR, an up-and-coming technology used to edit DNA.


Dr. David Gangitano is an associate professor in the Department of Forensic Science at Sam Houston State University.
Sam Houston State University is advancing the field of forensic botany with the publication of two recent studies that use marijuana DNA to link drug supplies and pollen DNA to aid in forensic investigations.

A novel HIV-based lentiviral vector can introduce a gene to pancreatic tumor cells that makes them more sensitive to the chemotherapeutic drug gemcitabine, without integrating into cellular DNA. This integrase-defective lentiviral delivery system greatly reduces the risk of insertional mutagenesis and replication-competent lentivirus production, as describe in a new study published in Human Gene Therapy, a peer-reviewed journal from Mary Ann Liebert, Inc., publishers. The article is available free to read on the Human Gene Therapy website until March 31, 2016.


Japanese bioengineers have tweaked Escherichia coli genes so that they pump out thebaine, a morphine precursor that can be modified to make painkillers.
A common gut microbe could soon be offering us pain relief. Japanese bioengineers have tweaked Escherichia coli genes so that they pump out thebaine, a morphine precursor that can be modified to make painkillers. The genetically modified E. coli produces 300 times more thebaine with minimal risk of unregulated use compared to a recently developed method involving yeast.

Researchers from the General Physics Institute of the Russian Academy of Sciences (GPI RAS) and Moscow Institute of Physics and Technology (MIPT) have developed a new biosensor test system based on magnetic nanoparticles. It is designed to provide highly accurate measurements of the concentration of protein molecules (e.g. markers, which indicate the onset or development of a disease) in various samples, including opaque solutions or strongly coloured liquids.

In a discovery that may lead to ways to prevent frost on airplane parts, condenser coils, and even windshields, a team of researchers led by Virginia Tech has used chemical micropatterns to control the growth of frost caused by condensation.

Bethesda, MD - Genome engineering is a rapidly growing discipline that seeks to develop new technologies for the precise manipulation of genes and genomes in cellula and in vivo. In addition to its utility for advancing our understanding of basic biology, genome engineering has numerous real-world applications, ranging from correction of disease-causing mutations in humans to engineering plants that better provide fuel, food and industrial raw materials. The first clinical trials and patient treatments using genome engineering approaches are now a reality. The scope of this meeting is expansive, encompassing multiple approaches for modifying genomes - from transgenesis and gene targeting to the creation of synthetic genomes. The experimental models featured include bacteria, fungi, model organisms (e.g.-- Drosophila, C. elegans, zebrafish, mice, rats), plants, humans, and animals including livestock. We anticipate that this diversity of approaches and experimental systems will create a stimulating meeting environment that will enable new insights and advance the field.


A transmission electron microscope image of ribbonfish skin shows random arrangements of crystalline quinine embedded in cytoplasm (a). The arrangement of crystal layers reflects light across a broad spectrum.
A nature-inspired method to model the reflection of light from the skin of silvery fish and other organisms may be possible, according to Penn State researchers.


Green spots observed in cells indicate successful insertion of the foreign fluorescent protein gene by the PITCh system.
A streamlined protocol for an alternative gene insertion method using genome editing technologies, the PITCh (Precise Integration into Target Chromosome) system, has been reported in Nature Protocols by Specially Appointed Lecturer Tetsushi Sakuma, Professor Takashi Yamamoto, Specially Appointed Associate Professor Ken-Ichi T Suzuki, and their colleagues at Hiroshima University, Japan.


'Ours is the first rolling DNA motor, making it far faster and more robust,' says Khalid Salaita, the Emory University chemist who led he research.
Physical chemists have devised a rolling DNA-based motor that's 1,000 times faster than any other synthetic DNA motor, giving it potential for real-world applications, such as disease diagnostics. Nature Nanotechnology is publishing the finding.


Slaymaker and Gao et al. used structural knowledge of Cas9 to guide engineering of a highly specific genome editing tool.
Researchers at the Broad Institute of MIT and Harvard and the McGovern Institute for Brain Research at MIT have engineered changes to the revolutionary CRISPR-Cas9 genome editing system that significantly cut down on "off-target" editing errors. The refined technique addresses one of the major technical issues in the use of genome editing.


These are fluorescently labeled polarized Upcyte hepatocytes.
In new research appearing in the prestigious journal Nature Biotechnology, an international research team led by The Hebrew University of Jerusalem describes a new technique for growing human hepatocytes in the laboratory. This groundbreaking development could help advance a variety of liver-related research and applications, from studying drug toxicity to creating bio-artificial liver support for patients awaiting transplantations.

RMIT University in Melbourne has worked with a medical device company and a neurosurgeon to successfully create a 3D printed vertebral cage for a patient with severe back pain.

Return to Biology News Net Homepage