What are genes and
genetic disorders?
Genes are the
basic unit of DNA (deoxyribonucleic acid). Genes are the functional unit of
heredity, which is passed by our parents to us. Every one of
us has around 30,000 to 40,000 genes which are responsible to find out different
things like the colour of our eyes or hair and also the ability of clotting of
our blood (hemophilic). A unique protein is being created by genes, which is
used for cellular function; this is the actually the appearance of genes which
has its effects. If the genes have some defects it could not create protein and
when this happens the trouble arises.
Every one of us got some defective genes from our parents; some of the
genes that we received have two copies; one from our father and the other one
from our mother and most of the time these defective genes has no affect on us.
But if we received the same defective genes from both parents the genetic
disorders might get itself revealed.
There are many disorders in our body that is not hereditary, but it has
some connections regarding our genes. The
reason for these complicated disorders is environmental issues and multiple
gene mutations. These disorders involved diseases like diabetes, Cancer and
heart disease. These kinds of disorders has more affect on people rather than
monogenic disorders(a genetic disease
that is controlled by one pair of genes – like Thalassaemia, Haemophilia). These complicated disorders make it very challenging to treat them.
Gene Therapy
This is the most
wonderful breakthrough in field of Health that is you can alter defective genes
by replacing or removing the abnormal genes or even introducing new normal
genes to prevent or treat yourself with the disease. Researchers are correcting
the defective genes by adding normal genes to the genome and also replacing the
defective ones.
To carry out these
procedures the researchers must know the actual location of these specific
genes and should be aware when, how and why these genes do these functions so
that they can find a new way bring the new information to genome. Bringing the
genes to their desired location is done by a carrier molecule called vector. Viruses
are the most common vectors which have the capability to deliver foreign
geneses to the cells. Because of the alteration of these viral vectors they
will not cause illness. There is another type of vector that is called
non-viral vectors.
Some commonly used
vectors in gene therapy are:
Viral Vectors
- Herpes simplex viruses
- Adeno virus
- Adeno-associated viral
Non- Viral Vectors
- Naked DNA
- Liposome
Now come to the
topic which is can we treat Cancer and Mesothelioma with it?
The primary
objective of gene therapy is to eliminate the root cause of the disease.
Basically the genes carry the instructions about making the proteins and other
building blocks necessary for cell to function. If the instructions of genes
are missing or it is incorrect a person may be lacking a healthy cell. The
researchers don’t deal with the effects of defective genes instead they try to
deliver the proper instructions to your cell by avoiding negative effects.
Obviously the
primary goal of gene therapy is to deal with genetic disorders. In earlier time
it was thought that the genes are fixed it could not be altered or changed
throughout our life. Our DNA can be damaged by smoking, chemicals or sun and
results in to mutations that cause defective hereditary behavior. A person
initially which can’t be seen for gene therapy certainly is a target like a
Mesothelioma patient.
Mesothelioma is
complicated disorder. This disorder is a result of mutation of genes due to
environmental cause like exposure of Asbestos and can also be inherited genetic
mutations. For developing Mesothelioma smoking of cigarettes further reveal the
complex nature of complicated disorders. The great thing of gene therapy not
only Mesothelioma other cancers can also be treated along with diseases like
diabetes and diseases related to heart.
To prevent cancer
this is a tremendous breakthrough as it can save lives and give hope to us to
live a better and a healthy life!
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