More recent research on the epigenetic modification
of gene expression by early maternal care in animals suggests the possibility of similar processes affecting human development.
Intracellular uptake and inhibition
of gene expression by PNAs and PNA - peptide conjugates.
His lab is interested in the regulation
of gene expression by mRNA processing in C. elegans and human cells.
EPFL biologists and geneticists have uncovered how the circadian clock orchestrates the 24 - hour cycle
of gene expression by regulating the structure of chromatin, the tightly wound DNA - protein complex of the cell.
Not exact matches
Taylor and colleagues made this discovery
by exposing fetal mice to BPA during pregnancy and examining
gene expression and DNA in the uteruses
of female fetuses.
Results showed that BPA exposure permanently affected the uterus
by decreasing regulation
of gene expression.
The resulting transcriptional profiles cluster not
by postpartum day, but
by milk Na: K ratio, indicating that women sampled during similar postpartum time frames could be at markedly different stages
of gene expression.
The shared patterns
of gene expression in the limbs and phallus are generated in part
by a common set
of noncoding DNA, also called «elements» or «enhancers,» which act to control
gene expression in both
of these structures, argues a study published October 1 in Developmental Cell.
Scientists at Southern Methodist University, led
by Professor and Chair
of Biological Sciences Santosh D'Mello, have used RNA - Seq to conduct transcriptome profiling
of gene expression changes in dying neurons.
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.
«Autism's social deficits are reversed
by an anti-cancer drug: Using an epigenetic mechanism, romidepsin restored
gene expression and alleviated social deficits in animal models
of autism.»
A protein called peroxisome proliferator — activated receptor g co-activator 1 - alpha (PGC1 - alpha) regulates the
expression of many
genes identified
by the researchers.
Volatile release stimulated
by volicitin may also depend on the octadecanoid pathway, raising the possibility
of cross talk between this molecule and the wound - induced
expression of defense
genes.
A team
of researchers from BWH has tackled this problem
by comprehensively analyzing
gene expression and protein distribution in human aortic valves obtained from valve replacement surgery.
Messenger RNA (mRNA) serves as an important intermediary during
gene expression,
by relating the genetic information
of DNA to the molecular mechanisms involved in manufacturing proteins.
A single miRNA can ramp down
expression of multiple
genes — but the number
of genes affected
by known miRNAs hasn't been determined.
This image shows the metabolic
expression of a
gene identified
by scientists from EPFL in Lausanne and ETH Zürich as being a key player in the development
of type 2 diabetes.
By identifying
gene expression signatures common to sight, touch and hearing, neuroscientists at the University
of Geneva (UNIGE), Switzerland, discovered a sensory «lingua franca» which facilitates the brain's interpretation and integration
of sensory input.
A team
of scientists led
by the University
of Birmingham has shown how a common mRNA modification, N6 - methyladenosine (m6A), regulates
gene expression to determine the sex
of fruit flies.
The overlap in
gene expression changes when neural progenitor cells are infected
by African or Asian strains
of Zika virus.
RNAScope ISH was developed
by Advanced Cell Diagnostics (ACD) Inc., initially for studies
of gene expression in animal (and especially human) tissues.
By blocking the
expression of a certain
gene in patients, University
of Montreal researchers have contributed to the demonstration
of great decreases in the concentration
of triglycerides in their blood, even in various severe forms
of hypertriglyceridemia and regardless
of the base values or the treatment the patient usually receives.
Among the historical figures bound
by the thematic thread
of dna in journalist Sam Kean's new book are Charles Hapsburg, whose weak chin was the result
of royal inbreeding, and a group
of Arctic explorers who were poisoned
by the Vitamin A in polar bear liver, which threw off their
gene expression.
The two - step process
of TILT — getting sick upon toxicant exposure and failing to get well — may be driven
by epigenetic changes, which occur when the environment alters the
expression of genes without changing the core DNA code itself.
By tracking activity in almost all the
genes of a free - living archaeon — which, like a bacterium, is a prokaryote — Bonneau was recently able to piece together how the
genes affected one another's
expression, enabling him to map the organism's «control circuit» as if it were a machine.
The direct methylation
of the DNA changes the
gene expression permanently if it takes place in the control regions
of genes (so - called CpG islands), that have been made accessible
by the modification
of the histones.
In a new study published in Physiological Genomics, a team
of U.S. researchers tracked in detail how this extreme makeover is controlled
by changes in
gene expression.
By day 34
of development, however, the pattern
of gene expression was much more similar to control cows derived from artificial insemination, suggesting that these surviving clones were able to implant in the uterus and begin to form a placenta.
This means that
gene expression can be measured
by the amount
of each unique type
of mRNA found in a blood sample.
The Epstein - Barr virus, which infects some 90 %
of Americans, may cause changes in
gene expression that dramatically increase a person's chance
of getting lupus and six other autoimmune disorders, a new study
by Harley, now a rheumatologist at the Cincinnati Children's Hospital Medical Center in Ohio, and colleagues shows.
Four days later, the livers
of the non-supressed mice had readjusted to a normal daily rhythm, as revealed
by the daily rise and fall
of liver -
gene expression.
An additional study, currently available at bioRxiv, led
by the researchers from the CRG and Cold Spring Harbour Laboratory, highlights the fact that a substantial part
of human and mice
genes have maintained an essentially constant
expression throughout evolution, in tissues and various organs.
Sure enough, plant root cells that harbor fungal arbuscules increase their
expression of genes involved in producing such lipids
by 3000-fold.
They did this
by testing tissue concentrations
of fatty acids in liver, muscle and brain tissue, along with the
expression of genes involved in regulating EPA status and its physiological benefits.
«This could mean that the reversal or suppression
of pathological
gene expression by beta blockers is somehow protective against heart failure, but it's something we would need to look into further to understand how individual
genes function in the heart.»
«It is exciting to find a correlation between brain circuitry and
gene expression by combining high quality data from these two large - scale projects,» says David Van Essen, Ph.D., professor at Washington University in St. Louis and a leader
of the Human Connectome Project.
W: We should have
gene expression and big projects organized
by the National Institutes
of Health, and they're not doing anything.
Despite the anatomical complexity
of the brain and the complexity
of the human genome, most
of the patterns
of gene usage across all 20,000
genes could be characterized
by just 32
expression patterns.
Then they compared the
expression of thousands
of genes in two samples
by measuring levels
of messenger RNA.
An antisense - based treatment called nusinersen, which removes a roadblock in the
expression of the second SMN
gene, was recently approved
by the FDA.
By examining
gene expression patterns, the new study found that parrot brains are structured differently than the brains
of songbirds and hummingbirds, which also exhibit vocal learning.
Investigators at Duke University, led
by Erica Davis, PhD, a co-senior author
of the report, blocked the
gene's
expression in zebrafish, which resulted in abnormal facial cartilage, smaller eyes and structural abnormalities
of neurons involved in the development
of reproductive organs.
FA is caused
by reduced
expression of a mitochondrial protein called frataxin (FXN) due to a two mutated or abnormal copies
of the FXN
gene.
«The number
of protein functions that are currently targeted
by drugs is incredibly small compared to the total number
of protein interactions that could be targeted for therapeutic benefit,» says Geoffrey Wahl, a professor in Salk's
Gene Expression Laboratory.
A decade
of post-genomic biology has also focused new attention on the regions outside protein - coding
genes, many
of which are likely to have key functions, through regulating the
expression of protein - coding
genes and
by making a slew
of non-coding RNA molecules.
A new study from the Institute
of Food Research has uncovered a mechanism
by which Salmonella bacteria organise the
expression of genes required for infection.
Another version, the CTC - iChip, rapidly isolates CTCs in a way that does not rely on preidentified tumor antigens, allowing capture
of cells with
gene expression patterns that may be missed
by the antibodies used in the HBCTC - Chip.
The once - disparate fields
of psychiatry and molecular genetics have been merged
by physician - scientists who study the correlation between
gene expression, transcription, and human behaviors.
It's not clear, for example, if the process
of analyzing
gene expression from a tumor biopsy to decide on a course
of treatment can be protected
by a patent.