We believe that our Development Platforms provides
us with a 2 pronged product portfolio that can be used individually or
in multiple combinations.
Dr. Langer’s and Dr. Teng’s polymer based research published in 2002,
signaled the beginning of their search for more effective methods to
treat SCI. Their efforts have since resulted in new fruitful outcomes
that laid down the foundation for the science we are developing today.
To better direct repair following penetrating spinal cord injury (SCI),
we have designed an implant modeled after the intact spinal cord
consisting of a multi-component polymer scaffold. Implantation of the
scaffold into an adult rat model of SCI promoted long-term improvement
in function relative to a lesion-control group. At 70 days post injury,
animals implanted with scaffold-plus-cells exhibited coordinated,
weight-bearing hind limb stepping. Histology and immunocytochemical
analysis suggested that this recovery might be attributable partly to a
reduction in tissue loss from secondary injury processes as well as in
diminished glial scarring. Tract tracing demonstrated corticospinal
tract fibers passing through the injury epicenter to the caudal cord, a
phenomenon not present in untreated groups. Together with evidence of
enhanced local GAP-43 expression not seen in controls, these findings
suggest a possible regeneration component. These results may suggest a
new approach to penetrating SCI and, more broadly, may serve as a
prototype for multidisciplinary strategies against complex neurological
problems including contusion SCI as well.
The abstract of our 2005 research
Novel Polymers for Treatment of Spinal Cord Injury
We have accomplished 5 main goals:
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Demonstrated therapeutic efficacy of using polymer alone to treat penetrating SCI.
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Designed a feasible plan to use the same kind of polymer to treat contusion SCI.
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Cultured human neural stem cells via our novel polymer can augment neural repair potential.
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Implantation our newly devised polymer scaffolds tailored to spinal
cord injury pathology alone or seeded with human neural stem cells can
minimize acute pathology and secondary injury, as well as promote
post-SCI neural survival/ regeneration, leading to functional
improvements.
- Novel combination of our polymer and stem
cell technologies with a recently identified drug which is safe for
humans may further promote neuroplasticity and improve treatment of
experimental spinal cord injury.
2) Tissue engineering that utilizes human neural stem cells for spinal cord injury repair
We
are focused on molecular mechanisms that underlie or enhance
experimental therapeutic strategies of human neural stem cells for the
frequent and challenging issues of experimental spinal cord injury
(SCI) and neurodegenerative diseases that are clinically relevant. In
addition, we have a primary focus on using polymer scaffolds to
potentiate neural stem cell (NSC) mediated repair of the injured spinal
cord through mitigating neurodegeneration and creating regeneration
promoting environment.