Since its genome was sequenced in 2002, scientists have identified
a number of genes involved in how the parasite functions inside its host to cause malaria.
In particular, the protein enhances the expression of a well - characterized oncogene called MYC, which in turn regulates a large
number of genes involved in cell proliferation.
This list is fascinating as it includes
a number of genes involved in the development of muscle and bones.
A large
number of genes involved in nervous system development and function were also deregulated.
Not exact matches
Even with the phenotype, perhaps there is a «trade off
involved» in that the same underlying genetic sub-scripts serve other purposes, or perhaps the sheer
numbers of gene - hormonal permutations mean it will always manifest itself due to pure statistics.
For instance, one admits that in much
of evolution (probably all above the bacteria), evolutionary changes
involve enormous
numbers of genes, rather than a selection
of one or two particular
genes (although that occurs in a few instances, possibly, for instance, in industrial melanism).
PRMT1 is
involved in a
number of genetic processes including
gene transcription, DNA repair and signaling.
A
number of individual
genes have been linked to suicide, such as those
involved in the brain's response to mood - lifting serotonin, and a signalling molecule called brain - derived neurotrophic factor (BDNF), which regulates the brain's response to stress.
Comparisons
of the Neandertal genome to the genomes
of five present - day humans from different parts
of the world identify a
number of genomic regions that may have been affected by positive selection in ancestral modern humans, including
genes involved in metabolism and in cognitive and skeletal development.
This study showed the two subtypes have different genetic origins and
involve a dramatically different
number of chromosomal rearrangements, mutations and other
gene variations.
The researchers used their new method to identify a
number of previously unknown
genes that are
involved in B - cell development.
A
number of these
genes are
involved in cancer and developmental abnormalities, he says, and «they may explain how some
of these conditions came to be.»
For the manatee, walrus, dolphin, and killer whale, the return to the sea
involved many evolutionary trade - offs amongst hundreds
of genes: a general loss
of the
number of sensory
genes for smell and taste, new functions for
genes forming skin and connective tissue, and
genes involved in muscle structure and metabolism.
Three simultaneous reports
involving more than 32,000 participants uncovered four new diabetes - associated
gene variants, bringing to 10 the
number of known non-Mendelian genetic risk factors for type 2 diabetes.
A comprehensive genomic analysis
of Wilms tumor — the most common kidney cancer in children — found genetic mutations
involving a large
number of genes that fall into two major categories.
By working closely with the KhoeSan, a group
of populations indigenous to southern Africa, the researchers have found that the genetics
of skin pigmentation become progressively complex as populations reside closer to the equator, with an increasing
number of genes — known and unknown —
involved, each making a smaller overall contribution.
«We were able to show that a significant
number of these adenomas carry a mutation in a
gene that is
involved in controlling cell proliferation and differentiation,» Calebiro further explained.
«We observed that a large
number of genes were
involved in pathways related to wound healing, immunity, and metabolism, and this is consistent with the idea that the earliest stages
of domestication may
involve adapting to highly crowded conditions,» said Mark Christie, lead author
of the study.
«We have also found a
number of gene families that seem to be
involved in the parasitism
of insects by worms and we are excited to continue studying these in future experiments.»
Over the years, a
number of groups have identified
genes which might be
involved with bipolar disorder.
A new genetic analysis reveals that our brawny cousins had a
number of distinct
genes involved in the buildup
of certain types
of fat in their brains and other tissues — a trait shared by today's Europeans, but not Asians.
This
gene, along with a
number of other
genes encoding proteins
involved in nickel homeostasis, has been acquired a long time ago by the bacterium via horizontal
gene transfer.
Both
of the new studies found that copy
number events
involving either duplication or deletion
of the 25 to 30 chromosome - 16
genes — several
of which are known to play a role in the developing brain — appear to cause autism.
A study published online 10 October in Nature Genetics provides the strongest evidence yet for the starting gun theory by showing that mutations in a
gene involved in ensuring proper
numbers of chromosomes result in childhood cancer.
They found over 700
genes which, when inhibited, brought down ENaC activity, including a
number of genes no - one knew were
involved in the process.
The researchers also found that these copy
number variants occurred more frequently in
genes involved in the function
of synapses, the connections between brain cells that transmit chemical messages.
With this approach the authors report a
number of unique RP mutations, a previously undescribed disease
gene called NEK2 that
involves the retinal photoreceptors, and structural DNA rearrangements originating in introns.
Reuters reports that «the activity
of disease - preventing
genes increased while a
number of disease - promoting
genes, including those
involved in prostate cancer and breast cancer, shut down, according to the study published in the journal Proceedings
of the National Academy
of Sciences.»
Study coauthors Rammohan Rao
of the Buck Institute for Research on Aging and Dale Bredesen
of the Buck Institute and UCLA «have provided evidence for a novel — in fact, radical — idea: that ApoE somehow gains access to the nucleosol and acts as a conventional transcription factor, influencing the expression
of a large
number of genes,» Steven Barger, who studies neurodegenerative disease at the University
of Arkansas for Medical Sciences and was not
involved in the study, wrote in an email to The Scientist.
At any given instant it can be argued that the cell is in a «state» defined by its components — their concentrations and locations, the interactions between components — that are modulated in space and time, and the complex circuitry — that
involves a large
number of interacting networks and a snapshot
of the dynamical processes — such as
gene expression, cell cycle, transport
of components, etc..
Similarly, other
genes involved together with DHCR7 in the cholesterol biosynthesis pathway, are also associated with a
number of genetic disorders / syndromes (e.g., Antley - Bixler syndrome — POR
gene), presenting with several common prenatal clinical manifestations (Porter & Herman, 2011).
Called RIDL (for «Release
of Insects with Dominant Lethality»), it
involves releasing large
numbers of male mosquitoes with their
genes adjusted so that when they mate with wild females, the offspring don't survive.
However, they were not designed to delineate regions
of the genome resisting introgression nor investigate the frequency and types
of genes involved in genetic incompatibilities, because they were based on a relatively small
number of loci (less than 50) and the sampling
of the genome was non-random (e.g. overrepresentation
of the X-chromosome or regions near centromeres).
Quantitative analysis
of bristle
number in Drosophila mutants identifies
genes involved in neural development.
By analyzing genome sequence data from human populations, including 1269 individuals from sub-Saharan Africa, we identify a diverse array
of large copy
number variants affecting the host invasion receptor
genes GYPA and GYPB We find that a nearby association with severe malaria is explained by a complex structural rearrangement
involving the loss
of GYPB and gain
of two GYPB - A hybrid
genes, which encode a serologically distinct blood group antigen known as Dantu.
Figure 7 depicts a stationary view
of the KEGG pathways for «Cell Cycle» and «Apoptosis» at three time points; it appears that ES cells (day 0) have higher
numbers of expressed
genes involved in cell cycle (rectangles in red color) compared to differentiated cells (day 10).