The researchers then observed how the frequency of
resistance genes changed over six generations of mosquitoes — a process, biologists refer to as «microevolution.»
Not exact matches
The advent of rice varieties bearing
genes with
resistance to the disease has
changed the perception about the disease: the incorporation of host - plant
resistance genes in rice varieties, their adoption and deployment in the world's main rice - producing environments is probably one of the most significant evidences of the role of plant pathology in agricultural development.
The former target, say, using
gene editing techniques to inactivate HIV receptors and achieve
resistance of blood cells to the virus (which Sangamo BioSciences is working on in clincial trials) is different than helping parents who both carry
genes for Huntington's Disease to have a child that is free of the disease (a
change to the genome that would be passed on to future generations and would likely not be very commonly needed).
The
resistance gene, however, by
changing the shape of the ribosome, succeeds in blocking the drug — but at the cost of slowing down protein output.
Even in the half or so of all diabetes cases that seem to be related to
genes that have programmed a person's cells to need less fuel, exercise and moderate diet
changes can work wonders if the progress of insulin
resistance is noticed soon enough during regular checkups.
A rare, but synonymous, codon in alleles of a drug -
resistance gene can
change translation kinetics and so produce a conformationally distinct protein species.
«Even though the specific molecular
changes that are found in PCB - resistant tomcod and killifish are different, in both species AHR2 seems to be one of the
genes — possibly the major
gene — that is responsible for the
resistance,» Hahn said.
According to a related study, the
genes behind this
resistance are evolving rapidly to keep up with an ever -
changing adversary.
They found that structural
changes crank up the output of one of the
genes by 50-fold, suggesting how such flies attain increased nicotine
resistance.
We concluded that an expanded Revive & Restore, in partnership with biotech organizations, will be able to offer services that include Genetic Insight (DNA sequencing and analysis), Biobanking (tissue collection and cell culturing), Advanced Reproductive Services (cloning and germ - line transmission), and Genome Engineering (CRISPR,
gene - drive, etc.) Applications include restoring genetic diversity, augmenting adaptation to climate
change, conferring
resistance to disease, and extirpating harmful invasive species.
Expert scientific opinion has repeatedly reaffirmed that the presence of antibiotic
resistance genes in GM foods is unable to
change the level of antibiotic
resistance present in gut bacteria (Bennett PM and others 2004, EFSA 2004, Salyers A (n.d.), van den Eede and others 2004).
Our data suggest that
changes in the expression of
genes associated with drug
resistance and cancer cell «stemness», induced by treatment with MIA - 602, lead to a significant reduction in the efflux capacity of drug resistant cells.
«We found that knocking this
gene down resulted in
changes in fatty acid and lipid metabolism that are reminiscent of what we see in insulin
resistance and T2D.»
Therefore, these reference genomes can also enable further studies, such as identifying
gene expression
changes that explain multidrug
resistance and host interaction.
The advent of rice varieties bearing
genes with
resistance to the disease has
changed the perception about the disease: the incorporation of host - plant
resistance genes in rice varieties, their adoption and deployment in the world's main rice - producing environments is probably one of the most significant evidences of the role of plant pathology in agricultural development.
No significant differences were seen between the normoxic and hypoxic anoikis - resistant populations collected from MCF7 cells and a single significant
gene change (PIP) was seen in T47D (Table 1) suggesting that the CSC - enriched population remains virtually unchanged following hypoxic culture and the increase in MFC, HFC, and tumor initiating cells is, therefore, due to expansion of the population, perhaps by increased symmetric self - renewal of the CSC or de-differentiation of early progenitor cells, rather than simply the acquisition of anoikis
resistance in non-CSC.
We are also examining how
gene expression
changes caused by chromatin modifier mutations interact with other commonly mutated pathways in urothelial cancers such as RTK - RAS - RAF and PI3K - AKT - MTOR to influence therapeutic response and
resistance.
A network - based analysis found these
genes were also coupled to that encoding dihydrofolate reductase,
changes to which underlie trimethoprim
resistance.
A
gene screen revealed a number of genetic
changes in the first (daughter) and third (great granddaughter) high - fat mice generations, including several linked to increased breast cancer in women, increased
resistance to treatment, poor prognosis, and impaired anticancer immunity.
A current project that could benefit, for example, is work with collaborators that explores how
gene frequencies
change and how unique genetic events such as the evolution of partial malarial
resistance evolved in inhabitants of the island of Sardinia.
Worse still is when agribusiness and geneticists
change the seeds of grasses, with their genetic manipulations converting, for example, 4 - and - a-half-foot tall traditional wheat into 18 - inch tall high - yield semidwarf strains that now comprise 99 % of all wheat grown worldwide, or insert various
genes for herbicide
resistance, as in genetically modified corn.