Genome Engineering; a Group of Technologies Used To Change an Organism's DNA
Genome engineering, also known as genetic editing, gene
manipulation, or genetic engineering, is basically a form of genetic
engineering where DNA is introduced, inserted, deleted, or altered at the
genetic level of an organism. It involves editing and modifying the genetic
material of living organisms. There are various methods to insert, delete, and
modify genetic material in living organisms. In recent years, several approaches
to genome editing have been developed. Genome engineering technologies enable
scientists to make changes in DNA, leading to changes in physical traits. These
technologies act like scissors, cutting DNA at a specific spot.
The process of editing DNA may be done to address specific
needs, such as to create an animal/plant hybrid, repair a disease gene, or add
on to a chromosome. It may also be used to screen thousands of diseases for
genetic disorders. It allows scientists to study how various lifestyle traits
and physical attributes are affected by genetic differences. Scientists use genome
engineering to study human evolution, to discover the role of natural
selection in evolving traits, and to find and develop treatments for inherited
illnesses and conditions. In order to learn more about the benefits of this
method, it is necessary to understand how genetic material is expressed in
living organisms.
Genome engineering were first developed some decades ago. It
can be used to modify DNA sequences to study gene function and regulation of
the genes involved in cancer through the generation of in vitro and in vivo
models. A new technology, CRISPR, allows scientists to edit a cell's DNA, to
destroy cancer cells in mice. The early research done on two type of metastatic
cancer, such as brain and ovarian cancer, has not been tested in humans. The
CRISPR-LNPs system acts as molecular scissors that cut cells' DNA. CRISPR is a
family of DNA sequences found in the genomes of prokaryotic organisms; archaea
and bacteria.
Moreover, CRISPR-based novel diagnostic tools have been used
to reduce the adverse effects of the COVID-19 pandemic. For example, in March
2021, a team of scientists led by Nanyang Technological University (NTU
Singapore) developed a diagnostic test, VaNGuard, that can detect the virus
that causes COVID-19 even after it has gone through mutations. VaNGuard
(Variant Nucleotide Guard) is CRISPR-based technology; detect mutated strains
of SARS-CoV-2, thus increasing the adoption of CRISPR genome engineering in the
diagnostics arena.
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