There is an abundance of issues that stem straight
from the small gene pools that human beings have manipulated in dogs; 60 percent of golden retrievers will die of cancer before they turn eight.
Not exact matches
Gene therapy has the potential to save lives, but the pool of people who suffer
from the orphan diseases, or conditions that pharmaceutical companies have historically ignored, is relatively
small.
The Chiesi fund will consider a wide range of opportunities,
from traditional
small molecules and biologics, to
gene therapies and cell therapies, to diagnostic and disease management technologies.
Suppose it could be shown
from past letters that my father met my mother because he missed his train, and so caught the one on which he found this beautiful young woman sitting; suppose, further, that a super-computer could show that some of my
genes can be traced back to a
small creature scrabbling about in the Triassic mud.
And thd gods closed their games: But keep in mind there are gods of doping
from using
small doses of, believe it or not, strycnine (Smithsonian's review of Olympic doping) to the latest,
gene manipulation.
This is nature in action and a
small part of the inevitable process that will remove religiousness
from the
gene pool.
Even if Noah impregnated all of them at once, or his sons did their respective wives, and then they all repeated the process 14 years later (give or take) when the 1st offspring became fertile, how could different races with distinct physiological adaptation arise
from such a
small, virtually identical
gene pool 4,000 years ago?
They discovered an orchestrated switching on and off of various
genes as the mammary gland transitions
from secreting
small amounts of immunity - boosting colostrum in the first days after giving birth to the copious production of milk in mature lactation.
The overexpression of an important
gene that regulates energy metabolism can cause a severe shortening of lifespan in male fruit flies but has only a
small negative effect on lifespans of female fruit flies, according to new research
from North Carolina State University.
This pattern of disease susceptibility suggests that Finns ancestral
gene pool was
small and was cut off early on
from the rest of Europes.
We could get radiation - resistance
genes, for example,
from the Bdelloid rotifer, a class of
small invertebrates that live in freshwater pools and survive megadoses of ionizing radiation.
Using computational analytical skills learned
from Gibbs, Ding discovered a
small gene in the virus other scientists had overlooked.
In 2011, Science's editors will be watching a
smaller detector at the Large Hadron Collider called LHCb, which will study B mesons in great detail; new techniques that should lead to the discovery of many more
genes contributing to adaptation; an ignited fusion burn at the National Ignition Facility; broadly neutralizing antibodies, which are capable of disabling a wide range of viral variants; the first plug - in hybrid electric cars whose batteries are charged
from a wall socket go on the market; and the results of the first phase III trial of a malaria vaccine.
L. lugubris also has a
small gene pool: its population consists of clones descended
from four or five interspecies couplings.
Green explains that siRNAs must be encapsulated in particles that are different
from those used to carry DNA because siRNAs are about 250 times
smaller than the DNA molecules usually used for
gene therapy.
Taking their cue
from nature, where structurally well - defined biopolymers are the norm, e.g. in DNA and
genes where slight variations to the order of a
small number of organic molecules gives rise to the diverse spectrum of life, they have developed a self - sorting strategy that regulates the order molecules take when forming long chain polymers.
Dr Clarkson and his team joined up with researchers Dr Andrea Brancale and Dr Andrew Westwell
from the Cardiff University School of Pharmacy and Pharmaceutical Sciences, to develop
small chemical inhibitors of the Bcl3
gene.
Upon sequencing the DNA, they found that DNA fragments containing mutated
genes — markers of tumors — were typically
smaller than healthy versions of the
gene from within the same patient.
In an independent effort, they introduced progressively
smaller pieces of DNA
from the large region known to contain the
gene into embryos of the mutant mice, looking for the
smallest piece that would correct the mutation in adult mice and restore a normal rhythm.
The surprises are apparently far
from over: Another kind of RNA can detect levels of
small molecules that help a cell run smoothly, and switch
genes on or off depending on the cell's needs.
The reduction varied
from 14 percent for a
small error in the
gene to cutting risk by about 50 percent when an entire copy of the
gene was disabled.
In most animals, these HOX
genes are active only in a
small section of the backbone, where ribs sprout
from the spinal column.
With funding
from foreign backers and the Finnish government, the scientists formed a
small company, GeneOS, in Helsinki, where they are working on how the
gene and its protein work.
Instead of using the usual
small set of DNA markers, both teams compared hundreds of
genes from up to 40 spider species to build a family tree that included all the web builders.
And when they sequenced Sputnik's genome, they found its
small ring of DNA contained
genes from three different viral families, including Mamavirus.
From the moment of conception, a father's
genes favor offspring that are large, strong, and aggressive (the better to court the ladies), while the mother's
genes incline toward
smaller progeny that will be less of a burden, making it easier for her to live on and procreate.
One way to control expression, he explains, is through microRNA,
small pieces of noncoding genetic material that control whether a
gene's protein is generated
from the DNA blueprints inside cell nuclei.
Doing the screen involves using short pieces of RNA, called
small hairpin RNAs, which are inserted into the cell and are able to halt messages
from specific
genes, keeping the
genes from making proteins.
The number of
genes differentially expressed in tissue samples
from the two groups turned out to be surprisingly
small — just 14 in all.
To discover those
genes, Esther van der Knaap, a Tanksley alumnus now at The Ohio State University, says she went straight for the heirlooms, which exhibit a range
from the Jersey Devil's
small, chili - pepper shape to plump, cracked beefsteaks known as Radiator Charlie's Mortgage Lifter.
From insects to mammals, a
small set of
genes and proteins controls the orientation of the body's cells and tissues
«Inhibiting RGS1 didn't prevent autoimmune diabetes
from happening, which is slightly disappointing but not surprising because any one of these
genes in humans has a very
small effect on risk,» says Dr. Kissler.
«The chance of the
gene being lost over and over again in the other lineages seems vanishingly
small compared with a single transfer
from a metazoan to a bacteria.»
These
genes exist on plasmids,
small segments of DNA that are capable of moving
from one bacterium to another, potentially spreading antibiotic resistance to other bacterial species.
One effective approach is to deliver drugs made
from small molecules of ribonucleic acid, or RNA, which are used to inhibit
gene expression.
Small RNA molecules originally developed as a tool to study
gene function trigger a mechanism hidden in every cell that forces the cell to commit suicide, reports a new Northwestern Medicine study, the first to identify molecules to trigger a fail - safe mechanism that may protect us
from cancer.
In the early 1980s, genetic engineering had just made the leap
from the laboratory to the boardroom, as corporations made
small fortunes inserting
genes into Escherichia coli to produce insulin, growth hormones, and other valuable molecules.
The team collected two
small skin samples
from each, and then cultured the cells in the lab and inserted the
gene that makes fireflies glow into the
gene that regulates the cells» clock.
What that indicates, Gingeras says, is that the long RNA molecules are being copied
from near the front of a
gene, where they interfere with the
gene's production until they are reduced to
smaller pieces.
Moffitt researchers want to develop a fast, cost - effective blood test that can accurately differentiate low - risk IPMNs that can be monitored
from high - risk IPMNs that need to be surgically removed by studying microRNAs (miRNAs), a class of
small molecules that regulate key
genes involved in the development and progression of cancer.
But because the vinclozolin - induced fertility changes occurred in almost every male rat descended
from a treated mother rather than in a
small percentage of offspring (as is seen in germ line mutations caused by radiation), Skinner suspects an epigenetic mechanism — a change that doesn't mutate the DNA sequence of an animal, but rather affects how
genes are expressed.
Now, researchers report promising results
from two
small gene - therapy studies that mimic this strategy, hinting that the field may be moving closer to a cure that works for the masses.
The study focused on a
small subset of nuclear receptors, a large family of proteins that regulate
gene expression in response to signals
from various binding partners, including steroids and fats.
Other blood disorders that have shown significant benefit
from targeted
gene therapy in
small trials include hemophilia (specifically, factor IX deficiency), severe beta - thalassemia (deficiency for the adult beta - globin
gene) and leukemia, where the patient's immune cells were treated to enable them to recognize cancer cells and destroy them.
But after analyzing the Hofstenia transcriptome, the team determined that the three - banded panther worm and planarians are only very distantly related, a view that had been proposed based on analyses with sequences
from a
small number of
genes.
It was established that the addition or removal of several
small chemical groups to or
from DNA could affect
gene expression.
One surprise in the genetic data is that both populations of Native Americans have a
small admixture of
genes from East Asians and Australo - Melanesians, including Papuans, Solomon Islanders and Southeast Asian hunter gatherers.
They collected
gene expression data
from six genetically diverse breast cancer cell lines, which were each exposed to 109
small - molecule drugs at multiple dosages and time points.
«The catalogue of
genes involved in immune defence responses is well conserved among different bee species regardless of their level of social organisation,» explained Dr. Robert Waterhouse
from the University of Geneva and the SIB Swiss Institute of Bioinformatics, «but it is much
smaller than in solitary insects such as flies and mosquitoes that often live in more pathogen - rich environments.»
There's also a long - term risk
from the
gene therapy that we think is
small, because we've genetically altered the T cells with a viral vector that's actually a modified, non-pathogenic form of HIV, the AIDS virus.