“What if a
cell’s DNA could be edited just like the text of a document so that you could
actually erase letters, you could erase whole sentences, [you could] replace
sentences, and you could do things that would enable scientists to change the
mutations that might cause genetic disease, make changes that allow us to
understand the function of DNA and different kinds of organisms and perhaps,
enable us to really direct the way that organisms are evolving on the planet?”
With this
promising words about future of CRISPR Cas9 technology Jennifer Doudna,
co-inventor of CRISPR Cas9 technology started her keynote address at 2017 South
by Southwest (SXSW) conference.
The whole
invention of CRISPR Cas9 technology is a result of curiosity developed research
project aimed at understanding how bacteria fight viruses. It started as
adaptive immune system in bacteria that could be harnessed into a powerful gene
editing tool that will have profound influence on the world. What started in
academic laboratory and is now adopted by clinicians, scientist, government
regulatory agencies and commercial companies to develop the technology for
human applications for eliminating many genetic diseases. This is a very young technology ( 5 years )which is evolving
very rapidly.
She further
cited many examples where the CRISPR Cas9 technology will find application in animals
and plants. It’s application in plants could change the way we look at GMO foods.
It can be used to create gene drivers that enable us to drive a trait through
population very rapidly. This can be used in near future to create mosquitos
that are resistant to infections, thereby limiting the spread of disease.
It will also
increase our understanding of why certain genetic traits in a population makes
them resistant to develop cancer.
Another
application of the Cas9 technology is using it to create animals that are better
suited for organ donors. In principle, we
can create organ donor pigs that are better suited for human organ replacement.
In humans, one
of the earliest clinical trials regarding the clinical application of using
Cas9 gene editing technology will be to correct the mutation that causes sickle
cell disease and is expected to start in couple of years.
Clinical
trials are already ongoing in China and USA to make changes in immune system of
cancer patients to make their immune cells capable of finding cancer cells and mounting an
immune response in destroying these cells.
All these
are somatic applications of the amazing technology, it can also be used for altering
the germ cells. Germ line editing application of Crispr technology is surrounded
by ethical dilemmas because whatever changes are made will be transferred to coming
generations.
It gives us powers
to make changes to DNA that will be inherited by future generations. We will be
creating traits that we consider enhancement and creating super humans.
Creating Superhumans: From Jennifer Doudna keynote speech. |
At present human
embryo editing, is only allowed for research purpose till 14 days stage of
development and not for clinical use to get pregnant till the ethical and moral
considerations are addressed fully across international borders.
She
concluded her lecture by iterating her interest of developing this technology
further by engaging and educating with public about ethical use of CRISPR for
gene editing for treating genetic diseases and not for some sort of harmful effects.
She invited
the public to visit the website of Innovative Genomic Institute, a partnership
between UC San Francisco and UC Berkeley
which educates the public about coordination between various institution to go forward with application of
this technique in agriculture and responsible use in human beings.
Dr. Jennifer
Doudna, Ph.D. was named one of Time Magazine’s 100 Most Influential People in
2015. She is a professor of molecular
and cell biology and chemistry at the University of California, Berkeley, where
she holds the Li Ka Shing Chancellor’s Chair in Biomedical and Health Sciences
and is a Howard Hughes Medical Institute investigator.
Here is the
full lecture at the SXSW conference,2017.
Beautiful oration byDrJennifer Foundation,crystal clear language,thoughts,study. Really very very impressive and useful speech,technology .Thanks Dr Anjali Vyas.
ReplyDeleteThanks, Dr Pramod Bansod. I appreciate your reading my post. Yes, the talk by Dr. Jennifer Doudna is indeed very impressive and explanative.
Delete