Nano technology in cancer treatment
A nanometer is a billionth of a meter
It's difficult to imagine anything so small, but think of something only 1/80,000 the width of a human hair Ten hydrogen atoms could be laid side-by- side in a single nanometer.
Nanotechnology is the creation of useful materials, devices, and systems through the manipulation of matter on this miniscule scale
There are many interesting nanodevices being developed that have a potential to improve cancer detection, diagnosis, and treatment
Published on: Mar 3, 2016
Transcripts - Nano technology in cancer treatment
NANO TECHNOLOGY IN
WHAT IS NANO TECHNOLOGY?
• A nanometer is a billionth of a meter
• It's difficult to imagine anything so small, but think of
something only 1/80,000 the width of a human hair
• Ten hydrogen atoms could be laid side-by- side in a single nanometer.
• Nanotechnology is the creation of useful materials, devices, and systems through the
manipulation of matter on this miniscule scale
• There are many interesting nanodevices being developed that have a potential to
improve cancer detection, diagnosis, and treatment
MANUFACTURING NANO DEVICES
There are two basic approaches for
• BOTTOM-UP Approach
• TOP-DOWN Approach
NANO DEVICES ARE SMALL ENOUGH TO ENTER
• Most animal cells are 10,000 to 20,000
nanometers in diameter
• This means that nanoscale devices (less
than 100 nanometers) can enter cells and
the organelles inside them to interact with
DNA and proteins.
• Tools developed through nanotechnology
may be able to detect disease in a very
small amount of cells or tissue.
• They may also be able to enter and monitor
cells within a living body
CANCER DETECTION AND DIAGNOSIS
• Detection of cancer at early stages is a critical
step in improving cancer treatment.
• Currently, detection and diagnosis of cancer
usually depend on changes in cells and tissues
that are detected by a doctors physical touch or
• Instead, scientists would like to make it possible
to detect the earliest molecular changes, long
before a physical exam or imaging technology is
• To do this, they need a new set of tools.
NANOTUBES- MARKING MUTATIONS
• Nanotubes are carbon rods about half the diameter of a
molecule of DNA that not only can detect the presence of
altered genes, but they may help researchers pinpoint the exact
location of those changes
• To prepare DNA for nanotube analysis, scientists must attach a
bulky molecule to regions of the DNA that are associated with
• They can design tags that seek out specfic mutations in the DNA
and bind to them.
• Quantum dots are tiny crystals that glow when they are stimulated by ultraviolet light Quantum dots
are tiny crystals that glow when they are stimulated by ultraviolet light
• By combining different sized quantum dots within a single bead, scientists can create probes that
release distinct colors and intensities of light.
• When the crystals are stimulated by UV light, each bead emits light that serves as a sort of spectral
bar code, identifying a particular region of DNA
QUANTUM DOTS CANCER SIGNATURE
• To detect cancer, scientists can design
quantum dots that bind to sequences of
DNA that are associated with the disease
• When the quantum dots are stimulated
with light, they emit their unique bar
codes, or labels, making the critical,
cancer-associated DNA sequences visible
• This will be important in the detection of
cancer, which results from the
accumulation of many different changes
within a cell.
NANOTECHNOLOGIES IN PATIENT CARE
• Nanotechnologies that will aid in cancer care are in various stages of discovery and development.
• Experts believe that quantum dots, nanopores, and other devices for detection and diagnosis may be
available for clinical use in 5 to 15 years.