In - depth analysis of the human body's microflora has been possible only in the past few years — a by - product of the same
new gene sequencing techniques that have allowed scientists to cheaply and accurately identify the DNA of the human genome.
2D nanoparticles known as nanosilicates can be used to grow bone and cartilage tissue from human mesenchymal stem cells, according to
new gene sequencing experiments by researchers at Texas A&M University in the US.
Scientists who genetically engineer crops are looking to introduce a desirable trait into that crop, and they do so by inserting
a new gene sequence from another species into the target crop's genome.
Not exact matches
That's not to say
gene editing is
new (it isn't), but Crispr simplifies the process by using molecular scissors that can be precisely targeted to snip out aberrant regions of genetic code, which can then be replaced with the correct
sequences.
Synthetic biology is the practice of engineering
gene sequences to create
new biological systems and devices.
With respect to antibiotic resistance, this novelty can be induced and we can trace the novelty to particular mutations arising absent
gene transfer; i.e. the
genes which give rise the resistance were not present prior to the mutation, they are
new sequences and not simply the activation of dormant
genes.
A local philanthropist underwrote purchase of a
new Illumina MiSeq device that facilitates targeted
gene sequencing.
In the
new research, the UB scientists found they could reverse those social deficits with a very low dose of romidepsin, which, they found, restores
gene expression and function using an epigenetic mechanism, where
gene changes are caused by influences other than DNA
sequences.
An international team led by researchers with the Lawrence Berkeley National Laboratory (Berkeley Lab) has developed a
new technique for identifying
gene enhancers —
sequences of DNA that act to amplify the expression of a specific
gene — in the genomes of humans and other mammals.
«Decoding the genome's cryptic language:
New tool to map RNA - DNA interactions could help researchers translate
gene sequences into functions.»
In the
new study, the researchers
sequenced the entire genome of mice that had undergone CRISPR
gene editing in the team's previous study and looked for all mutations, including those that only altered a single nucleotide.
Gene discovery was greatly facilitated by a
new exome
sequencing technology, which analyzes all protein - coding regions of the genome at once.
«
Gene sequencing study reveals unusual mutations in endometriosis: Findings advance search for
new ways to classify aggressive forms of the disease.»
Based on the transcript
sequences, the researchers identified 1,437
new promoters — short DNA
sequences where transcription begins — in or between
genes, on top of the 1,730 promoters they knew of.
The
new analysis, based on data assembled primarily by graduate student Yan - Jie Feng at Sun Yat - Sen University in Guangzhou, China, focused on the
sequences of 95
genes located on chromosomes in the nucleus and how they changed over time.
Although the researchers suspected that having more copies of the
gene sequence might confer a greater degree of resistance, they had no way of testing their suspicions before the
new assay was developed.
The growth of publicly accessible data troves on genome
sequences,
gene activity, and protein structures and interactions has opened
new territory for biologists.
«By inserting the
new sequence into the DNA, perhaps they are altering the
gene in some other way,» he says.
She and her colleagues
sequenced genomic DNA in the tumor samples but did not find any
new driver
gene mutations in the metastatic samples compared to the primary tumor samples, said McDonald, who completed clinical training under Iacobuzio - Donahue at Johns Hopkins.
More than 80 percent of the viral
gene sequences he found were
new to science.
A
new study suggests that epigenetic effects — chemical modifications of the human genome that alter
gene activity without changing the DNA
sequence — may sometimes influence sexual orientation.
But by investigating the DNA
sequence around the resistance
genes, the team figured out how the resistance
genes transfer occurred through a
new mechanism named «carry back,» where the pathogen basically has a primitive form of «sex» with the Actinobacterium and takes up its resistance
genes after it dies.
After his group utilized a
new gene -
sequencing tool, they posted some unpublished genome data online.
New genome -
sequencing research suggests white European people with two copies of variant forms of MC1R, a
gene linked to pale skin and red hair, have faces that appear up to two years older than those who are the same age but don't have both copies.
In a
new study, researchers are taking joint biopsy tissue from patients at the start of a
new therapy and then six weeks later to see if they can find a predictor
gene sequence that will clearly identify which patients respond to a particular therapy.
New, sophisticated
gene sequencing techniques are leading to an increasing understanding of the causes of genetic disease, and can help parents with affected children make informed reproductive choices, the annual conference of the European Society of Human Genetics will hear.
A
new study published in The Journal of Molecular Diagnostics has established that hybrid - capture
sequencing is the method of choice for
sequencing «actionable»
gene mutations across the most common forms of lymphoid cancer.
«Single - nucleus RNA
sequencing, droplet by droplet: DroNc - Seq, technology that merges single - nucleus RNA
sequencing with microfluidics, brings
new scale to
gene expression studies in complex tissues.»
«Harnessing the power of genomic
sequencing augments diagnosis and treatment of lymphoid cancer:
New assay may allow screening for «actionable»
gene mutations in routinely acquired archival biopsies, reports The Journal of Molecular Diagnostics.»
They enable molecular biologists and geneticists to selectively chop DNA into pieces, which can then be assembled into
new versions of the
gene, inserted into the genomes of other organisms, or
sequenced as part of an effort to map an organism's genetic material.
Large - scale methods of probing samples, such as DNA
sequencing, microarrays, and automated
gene - function studies, are filling
new databases to the brim.
Suspecting that the other four carried a
new Ehrlichia species, the researchers
sequenced the bacterial
gene in their blood and compared it to a database containing the
sequences of known infectious bacteria.
For one such project, the team developed a
new software tool called GppFst that allows researchers to differentiate genetic drift — a neutral process whereby
genes and
gene sequences naturally change due to random mating within a population — from genetic variations that are indicative of evolutionary changes caused by natural selection.
Over the longer term, the identification of the coffee tree genome
sequence opens up
new possibilities for varietal improvement, knowledge of the specific functions of the
genes (in particular those specific to coffee trees), the possibility of transferring results to other species, and refining diagnostic tools for the function of the plant.
His laboratory at the NIH is
sequencing 1000
genes each month, but he hopes to produce
sequences of 2000
new genes a week.
«However, our
new approach uses cutting - edge DNA
sequencing technology to precisely measure the effects of thousands of
sequences on
gene activity at the same time.»
A comprehensive DNA
sequencing of pancreatic cancer cases revealed not only a plethora of damaged
genes, but potential diagnostic biomarkers that could help identify those with longer or shorter survival, and provide opportunity for
new therapeutic interventions.
Matches between
new genes from other species, including mammals, and these E. coli
sequences have often helped researchers pin a name and function on their discoveries.
By characterising the DNA
sequence of these individuals, the project gained insight into the contribution of rare variants to a broad range of disease scenarios, and discovered
new genetic variants and
genes underpinning disease risk.
The genome - editing technique known as CRISPR allows scientists to clip a specific DNA
sequence and replace it with a
new one, offering the potential to cure diseases caused by defective
genes.
Just as the Human Genome Initiative in the 1990s
sequenced human DNA for the subsequent identification and analysis of
genes, so too will the Materials Genome Initiative
sequence materials for identifying
new properties for a variety of applications.
The
new research focused on just nine
genes, those most strongly associated with autism in recent
sequencing studies, and investigated their effects using precise maps of
gene expression during human brain development.
To begin to grapple with those questions, the researchers involved in the
new study first selected as «seeds» the nine
genes that have been most strongly tied to ASDs in recent
sequencing research from their labs and others.
They also demonstrated significant advantages of editing
gene regulatory
sequences in their native location to uncover
new functionalities that could lead to a better understanding of how control switches work to turn
genes on and off in the body.
In the
new nomenclature, genetic
sequences are labeled «genseq,» followed by a reliability ranking (e.g., 1 if the
sequence is from a primary type), followed by the name of the
genes from which the
sequences were derived (e.g., genseq - 1 16S, COI).
Although aneuploidy does not bring in
new genetic
sequences, it does make possible another kind of genetic diversity — in which the extra
genes produce extra proteins, resulting in an organism that differs from its parents.
A
New World monkey joins a growing list of primate species with
sequenced genomes, improving genomicists» ability to tell what
genes make primates — and humans — unique.
Sequencing the genome and assessing
gene activity in various tissues in the tsetse fly led to
new insights into its biology and the control of parasitic diseases transmitted by this insect.
COLD SPRING HARBOR,
NEW YORK — Even though a draft
sequence of the human genome is nearing completion, biologists still have widely varied estimates of how many
genes it contains.
In some cases, the missing pieces can be picked up by comparing the
new sequences with known
sequences of
genes from other species.