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Nanomedicine

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Nanomedicine - Medicine of the future Medical application of nanotechnology Nanotechnology: the study of the control of matter at the atomic/molecular level All ... – PowerPoint PPT presentation

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Date added: 5 September 2019
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Title: Nanomedicine


1
Nanomedicine
  • - Medicine of the future

2
  • Medical application of nanotechnology
  • Nanotechnology the study of the control of
    matter at the atomic/molecular level

3
  • All substances (including you and me) are made up
    of atoms
  • If we learn to control those atoms we will
    control the substances.
  • Nanotech deals with substances that are 100 nm or
    smaller
  • DNA diameter 2 nm
  • Smallest bacteria 200 nm

4
The comparable size of 1 nm to 1 m is
5
  • Nanomedicine has the potential to deliver
  • Advanced drug delivery systems
  • New therapies
  • In vivo imaging
  • neuro-electronic interfaces (biosensors)
  • Perhaps even.cell repair machines

6
  • 4 billion dollars are currently being invested
    in research and development of nanomedicine
  • Sales of 7 bill. In 2004
  • 200 companies
  • 130 drug delivery systems are under development

7
Medical Uses
  • 1. Drug delivery
  • Nanoscale particles could improve the
    availability of the drug to cells that most need
    it
  • Targeting is a huge issue 65 billion are lost
    each year due to poor targeting
  • Nanoparticles are easily taken up by cells
    because of their size

8
  • Could allow for lower doses that are much more
    effective because of targeting
  • Less toxic (less side effects)
  • Less costly

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10
  • 2. In vivo imaging
  • Nanodyes provide better contrast for
    MRI/ultrasound
  • Ex. quantum dots (give off light when excited by
    waves) localize to cancer tumors (tumor cells do
    not have good lymphatic drainage) and allow for
    much better imaging
  • Toxic!
  • Could THEY be used to treat tumors????

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15
  • 3. Surgery applications
  • Since quantum dots localize to cancer cells would
    allow much better removal of dangerous tissues.
  • Photodynamic therapy metal nanotubes localized
    to cancer cells could melt them when heated
    using a light source.
  • Noninvasive
  • Not toxic to other tissues, like chemotherapy

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17
  • Flesh welders fix cuts by weldingthem
    together, ex. arteries

18
  • 4. nanorobots
  • Nanosize machines that could be activated by
    light to do things inside our bodies
  • ex. fullerine

19
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