The breakthrough arrived in the form of genetically engineered mice that, thanks to
inserted human genes, made antibodies that were fully human.
To re-engineer them for delivering human genes, scientists «clean out» the harmful parts of the virus,
insert a human gene into the virus» genetic material and then inject the virus into the body.
Not exact matches
In this study, they genetically engineered mice without CIB2, as well as mice in which a
human CIB2
gene mutation had been
inserted.
A few years ago scientists at the Johns Hopkins School of Medicine
inserted the
gene for the
human L - type photopigment into mice.
Smith
inserted the mole rat amino acid triplet into the
human SCN9A
gene, and poured acid over the resulting mutant channel.
Oncologists William Hahn, Robert Weinberg, and colleagues at the Whitehead Institute for Biomedical Research in Cambridge, Massachusetts, mutated the
gene for one part of the enzyme and
inserted it into cultured
human cells from colon, ovary, and breast tumors.
Lindstrom and his colleagues
inserted genes for
human nicotinic receptors into frog eggs and incubated them with levels of nicotine similar to those found in the blood of a
human smoker.
In future experiments, Lahn will
insert the
human ASPM
gene into mice to see what affect it has on brain development.
The researchers
inserted the
genes for the 25 subtypes into
human kidney cells (an easier feat than working with real taste cells).
Before Katlyn showed up at NIH, the doctors there were already well prepared: They had
inserted healthy
human ADA
genes into a modified mouse retrovirus — a type of virus that can enter
human cells and transfer new genetic material right into the DNA strands in their nuclei.
Gene therapy can be used to neutralise harmful
human genes, such as those that cause cancer, or to
insert healthy copies of damaged
genes into people with a genetic disease.
These
genes are fairly common in the
human genome, and more importantly, they are safe places to
insert genetic material.
To expedite the cutting - and - pasting of fragments of DNA, the pioneers of the method
inserted a
human growth hormone
gene alongside other modified DNA.
Taking advantage of this, researchers can
insert therapeutic
genes into a virus, then use the viruses to shuttle the
genes to the appropriate cells or tissues inside a
human body.
To prevent this decline in Area X, White's research team used methods similar to
human gene therapy to
insert a version of FoxP2 in male zebra finches.
A Johns Hopkins University team this week reported
inserting a disrupted
human gene, the schizophrenia risk factor DISC1, into lab mice, causing them to exhibit the brain asymmetry characteristic of schizophrenia as well as agitation in open spaces and trouble finding hidden food — traits reminiscent of the restlessness, impaired sense of smell and depressionlike symptoms schizophrenics suffer, Reuters reports.
After
inserting more than 400
human genes into yeast cells, researchers found that almost half of the
human genes actually worked and kept the yeast alive!
After
inserting the
gene from Neandertals, living
humans, and one 45,000 - year - old
human into animal cells and exposing them to carcinogens, the Neandertal cells were significantly more likely to experience a toxic effect.
Fragments of genetic material called transposons, or «jumping
genes,»
inserted themselves long ago in the
human genome and have been a powerful force in our evolution, Tina Hesman Saey reported in «The difference makers» (SN: 5/27/17, p. 22).
Interestingly, while viruses certainly have the ability to edit
human DNA — most obviously by
inserting their own genetic code into DNA so that the new viruses are built alongside DNA replication — the review article explains that viruses do not necessarily turn off the immune system by editing
genes.
Rewiring
gene activity in
humans happened, in part, when transposons
inserted themselves into the genomes of
human ancestors after the split from chimpanzees, he reported last year in Genome Biology and Evolution.
Scientists often study individual
human genes by
inserting them into yeast cells.
After
inserting more than 400
human genes into yeast cells one at a time, researchers found that almost 50 % of the
genes functioned and enabled the fungi to survive.
The first step was to
insert an artificial chromosome containing the cumbersome
human antibody
gene into the nucleus of a cow cell.
Whereas in the nematode experiment the researchers targeted nanoparticles to temperature - sensitive ion channels that naturally exist in the membranes of the worms» nerve cells, the scientists
inserted the
gene for a heat - activated ion channel called TRPV1 into the
human and rat cells.
CRISPR is conventionally a cut - and - paste tool allowing scientists to chop out unwanted strands of DNA and
insert new
genes, but a large volume of
human diseases are caused by a single point mutation somewhere in a person's DNA.
These cells, first described in
humans in November 2007, are produced by
inserting certain stem - cell - associated
genes into regular adult cells (like skin cells).
Howard Hughes Medical Institute (HHMI) researchers at Yale University have «rescued» fruit flies from cancerous tumors by
inserting a cancer - suppressing
human gene into the insects.
However, advancements in engineering
human stem cells are now allowing researchers to grow mini-organs in labs, and
gene - editing tools can be used to
insert specific mutations into these cells.
Spontaneous expansion of the CAG repeat stretch in the CAG 140 KI mouse model, which carries a chimeric mouse /
human exon 1 containing around 125 CAG repeats and the
human polyproline region
inserted in the murine huntingtin
gene (Menalled et al., 2003, Hickey et al., 2008), has recently led to a new KI line that carries around 190 CAG repeats (CAG 190 KI) in a congenic C57Bl / 6J background.
Researchers have managed to
insert that
gene into mice to make a living, breathing model of a
human disease that mice would otherwise never acquire.
So the scientists
inserted the taste
genes into
human kidney cells that were growing in dishes.
The CAG 140 KI mouse model carries a chimeric mouse /
human exon 1 containing around 125 CAG repeats and the
human polyproline region
inserted in the murine huntingtin
gene.
They
inserted mutated and normal
human FABP7
genes into star - shaped glial cells called astrocytes.
Disturbingly, the only published
human feeding study on GM foods ever conducted verified that the
gene inserted into GM soy transfers into the DNA of our gut bacteria and continues to function.