But mammals (
including humans and mice) seem to have missed out on this important skill.
In many mammals,
including humans and mice, the PRDM9 protein marks where recombination will take place — the molecular equivalent of the orange flags that utility crews use to mark digging locations.
The new MIT system appears to work for many cell types — so far, the researchers have successfully tested it with more than a dozen types,
including both human and mouse cells.
The result was a highly selective drug they named SBI - 0206965, which successfully killed a number of cancer cell types,
including human and mouse lung cancer cells and human brain cancer cells, some of which were previously shown to be particularly reliant on cellular recycling.
Not exact matches
Several species of mammal,
including mice, rats
and dogs, are able to sniff out disease in
humans and other animals.
So he implanted various
human tumors —
including ovarian, breast, colon, liver,
and brain — into
mice and then injected the animals with antibodies that disable CD47.
This consortium selected 44 separate sections of the genome that
included regions of high to low gene density
and high to low similarity between
mouse and human.
The IGF1 protein is crucial for the growth of mammals,
including mice and humans, so Ostrander's group
and other collaborators began collecting DNA from additional breeds to see if they also shared the same gene variant.
Several species,
including Arabidopsis, rice,
mice and humans, copy a surprising amount of RNA from the «wrong» DNA strand — that is, the strand opposite the one that specifies a protein.
Scientists have assumed these tunes are hardwired in their tiny
mouse brains
and doubted that rodents modify their songs after hearing others — a cognitive feat similar to vocalizations by birds
and some mammals,
including dolphins, bats
and humans.
Chronic treatment with rapamycin has been problematic in both
humans and mice; the drug has the potential to cause deleterious metabolic side effects
including weight gain
and glucose insensitivity.
«These two studies highlight the value of using an integrated multi-systems approach —
including fruit flies,
mice,
and human cells — to discover mechanisms underlying disease processes.»
Like all mammals,
including humans,
mice lose up to a third of their muscle mass
and power as they get older.
When they delivered this virus into the noses of
mice and ferrets, the animals» epithelial cells produced the desired antibodies; they then «challenged» the animals with a range of dangerous influenza viruses that no single vaccine can outwit,
including H5N1, which kills both birds
and humans,
and the H1N1 that caused the infamous 1918 pandemic.
Similar to
humans, the
mice developed tumors at secondary sites
including the liver, lung, peritoneum,
and diaphragm.
The study, conducted in
mice and including analyses of
human cancers, found very high levels of two proteins — dectin - 1
and galectin - 9 — in pancreatic tumors.
For the animal study, the researchers separated 52
mice with colon cancer tumors into three groups,
including a control group
and groups that were fed either the grape compounds or sulindac, an anti-inflammatory drug, which was chosen because a previous study showed it significantly reduced the number of tumors in
humans.
Titze
and his colleagues, Tobias Riede of Midwestern University in Glendale, Arizona
and Ted Mau of the University of Texas Southwestern Medical Center, compiled measurements of larynx characteristics for 16 species,
including humans and animals ranging from
mice to elephants.
She analyzes the comparative histopathology of genetically altered
mice and models of
human diseases,
including cancer, inflammatory disorders,
and microbial infections.
First author Antonio Di Meco
and colleagues used a triple transgenic (3xTg)
mouse model that displays an AD - like phenotype,
including cognitive decline,
and Aβ
and tau neuropathology characteristic of the disease in
humans.
Green fluorescent protein labeling allowed them to see the early development pattern
and show that lncND, which ordinarily is not present in
mice — lncND is present only in some primates
including humans — had a functional effect on development.
(Elephant protein sequences in present databases are incomplete, so other matches for the mastodon turned up among more distantly related mammals,
including dogs, cows,
mice,
and humans.)
Dr. Spangenburg
and colleagues,
including researchers from the University of Maryland School of Medicine, Brigham Young University, Karolinska Institutet in Sweden,
and East Carolina University, found that the BRCA1 protein exists in both
mouse and in
human skeletal muscle.
Not only is genetic modification easier in
mice, but it is likely to become much more feasible in a wide range of other species,
including pigs, fish, monkeys,
and even
humans.
The researchers published their views of nine cell types,
including cancer cells in both
humans and mice, in the December 18, 2014, issue of Cell.
Improvements on this scale happened in all the animals,
including mice with a version of
human Alzheimer's disease, elderly rats
and monkeys with natural degeneration, plus rats
and monkeys given brain lesions similar to those seen in Alzheimer's.
The findings, now published in PLOS Genetics, reveal how
mice can actually mimic
human breast cancer tissue
and its genes, even more so than previously thought, as well as other cancers
including lung, oral
and esophagus.
The current research team, which
includes Dr. Minoda
and Dr. Hiroki Takeda of Kumamoto University,
and several researchers from Keio University, have successfully grafted
human iPS - derived cells into the inner ear of embryonic
mice, a feat with a high level of technical difficulty.
A total of 24 genes
including a gene called Aipl1 — standing for aryl hydrocarbon receptor interacting protein like 1 — have been linked to LCA in
humans and mice.
The DNA of BKV has been discovered in several types of
human cancers
including prostate tumours,
and mouse studies suggest the virus can trigger cancer.
After residing with this pugnacious roommate for ten days, many
mice developed symptoms that resemble depression in
humans,
including anxiety, social avoidance
and difficulty sleeping.
The next steps in this line of research
include tests on whether boosting the effects of FGF21 can help limit or reverse liver damage in
mice and decrease a preference for alcohol in
humans.
Mice that lack the fmr1 gene (
and therefore lack the FMRP protein) show some of the same symptoms of
human FXS,
including seizures, impaired sleep, abnormal social relationships,
and learning defects.
These
mice have their hemoglobin genes removed
and replaced with the mutated
human version, saddling them with many of the same problems as
human sufferers,
including immature, short - lived,
and sickle - shaped red blood cells; anemia; reduced blood flow;
and an enlarged spleen.
«We think that by restoring the natural «microbial identity» of laboratory
mice, we will improve the modeling of complex diseases of free - living mammals, which
includes humans and their diseases,» said Barbara Rehermann, M.D., senior author of the paper.
A total of 24 genes
including a gene called Aipl1 — standing for aryl hydrocarbon receptor interacting protein like 1 - have been linked to LCA in
humans and mice.
Importantly, intraperitoneal inoculation of pancreatic homogenates containing IAPP aggregates into transgenic
mice expressing
human IAPP dramatically accelerates IAPP amyloid deposition, which was accompanied by clinical abnormalities typical of T2D,
including hyperglycemia, impaired glucose tolerance,
and a substantial reduction on β cell number
and mass.
Next steps
include He's collaboration with Piedmont Atlanta Hospital to retrieve T cells, liver cancer cells
and healthy tissue normally removed from patients during surgery, put the
mouse receptor genes on these T cells
and monitor in a dish both how those cells now fight the tumor
and react to healthy
human tissue.
We designed a virtual version of the assay for
human subjects that
includes the visible - target training, hidden - target learning,
and probe trials that are typically administered in the
mouse version.
Experimental models
include yeast, mammalian
and human cell lines, mutant
mouse models
and tumour samples.
More recently, I have demonstrated the feasibility of using fMRI in combination with pharmaco - genetic silencing to dissect the circuital basis of complex behaviors,
and demonstrated for the first time that the
mouse brain contains distributed resting - state functional connectivity networks,
including plausible homologues of the
human default - mode (DMN)
and salience networks.
Corley also leads a $ 1.6 - million project that will be the first attempt to construct a physiologically based pharmacokinetic (PBPK) model for application to multiple species,
including mouse and human.
Cultured
mouse, monkey,
and human pluripotent cells can be driven down a retinal lineage as determined by the expression of marker genes,
including the EFTFs [2]--[4].
We have found that expression of C3 in normal
mouse eyes leads to pathology similar to AMD in
humans,
including the creation of anaphylatoxins
and the MAC.
An international team of scientists,
including four from Brown University, conducted
and analyzed tests using a «knock - in»
mouse carrying a gene for a mutant DNA / RNA binding protein called TDP - 43, which causes a form of inherited ALS in
humans.
The George lab has made seminal contributions to the field
including: discovering a novel population of neurons in the brain of
humans, rats
and mice that are involved in nicotine dependence, identifying neuronal ensembles responsible for nicotine
and alcohol addiction,
and unveiled the cellular
and molecular changes associates with long term use of nicotine, cocaine, methamphetamine
and alcohol use on the brain.
Genetically engineered
mice now act as robust engines for the generation of diverse repertoires of affinity - matured, fully -
human variable regions with intrinsic drug - like properties necessary for successful development
including high potency, specificity, manufacturability, solubility
and low risk of immunogenicity.
Methods: The PNNL mass spectra data used by the team
included samples taken from a diverse set of more than 100 organisms,
including humans, the common house
mouse,
and the metal - reducing bacterium Shewanella oneidensis.
Researchers have produced knockout
mice with characteristics similar to
humans suffering from a wide range of disorders,
including cancer, heart disease, neurological disorders
and even obesity.
«Over the past ten years, several research groups,
including our own, have shown the importance of certain immune cell subsets in preventing or exacerbating heart disease in
mice, but we are just beginning to understand how the metabolism
and function of these immune cells change during cardiovascular disease progression in
humans,» says Hedrick.