Government-Owned Inventions; Availability for Licensing, 60863-60865 [E7-21100]
Download as PDF
<![CDATA[
60863
Federal Register / Vol. 72, No. 207 / Friday, October 26, 2007 / Notices
Comments are to be identified with the
docket number found in brackets in the
heading of this document. Received
comments may be seen in the Division
of Dockets Management between 9 a.m.
and 4 p.m., Monday through Friday.
Dated: October 22, 2007.
Jeffrey Shuren,
Assistant Commissioner for Policy.
[FR Doc. E7–21122 Filed 10–25–07; 8:45 am]
BILLING CODE 4160–01–S
DEPARTMENT OF HEALTH AND
HUMAN SERVICES
National Institutes of Health
Submission for OMB Review;
Comment Request; the Multi-Ethnic
Study of Atherosclerosis (MESA) Event
Surveillance
Summary: Under the provisions of
Section 3507(a)(1)(D) of the Paperwork
Reduction Act of 1995, the National
Heart, Lung, and Blood Institute
(NHLBI), the National Institutes of
Health (NIH) has submitted to the Office
of Management and Budget (OMB) a
request for review and approval the
information collection listed below.
This proposed information collection
was previously published in the Federal
Register on August 21, 2007, pages
46640–46641, and allowed 60 days for
public comment. No comments were
received. The purpose of this notice is
to allow an additional 30 days for public
comment. The National Institutes of
Health may not conduct or sponsor, and
the respondent is not required to
respond to, an information collection
that has been extended, revised, or
implemented on or after October 1,
1995, unless it displays a currently valid
OMB control number.
Proposed Collection: Title: The MultiEthnic Study of Atherosclerosis (MESA)
Event Surveillance. Type of Information
Collection Request: Renewal (OMB No.
0925–0493). Need and Use of
Information Collection: This project
identifies and quantifies factors
associated with the presence and
progression of subclinical
cardiovascular disease (CVD)—that is,
atherosclerosis and other forms of CVD
that have not produced signs and
symptoms. The findings provide
important information on subclinical
CVD in individuals of different ethnic
backgrounds and provide information
for studies on new interventions to
prevent CVD. The aspects of the study
that concern direct participant
evaluation received a clinical exemption
from OMB clearance (CE–99–11–08) in
April 2000. OMB clearance is being
sought for the contact of physicians and
participant proxies to obtain
information about clinical CVD events
that participants experience during the
follow-up period. Frequency of
Response: The participants will be
contacted annually. Affected Public:
Individuals or households; Businesses
or other for profit; Small businesses or
organizations. Type of Respondents:
Individuals or households; physicians.
The annual reporting burden is as
follows: Estimated Number of
Respondents: 550; Estimated Number of
Responses per Respondent: 1.0; Average
Burden Hours Per Response: .2; and
Estimated Total Annual Burden Hours
Requested: 36.7. The annualized cost to
respondents is estimated at $5,595,
assuming respondents time at the rate of
$18.65 per hour and physician time at
the rate of $75 per hour. There are no
Capital Costs to report. There are no
Operating or Maintenance Costs to
report.
ESTIMATES OF HOUR BURDEN
Number of
respondents
Type of respondent
Frequency of
response
Average time
per response
(hours)
Annual hour
burden
250
300
1
1
0.20
0.20
16.7
20
Total ........................................................................................................
rmajette on PROD1PC64 with NOTICES
Physicians ......................................................................................................
Proxies ...........................................................................................................
550
1
0.20
36.7
Request for Comments: Written
comments and/or suggestions from the
public and affected agencies should
address one or more of the following
points: (1) Evaluate whether the
proposed collection of information is
necessary for the proper performance of
the function of the agency, including
whether the information will have
practical utility; (2) Evaluate the
accuracy of the agency’s estimate of the
burden of the proposed collection of
information, including the validity of
the methodology and assumptions used;
(3) Enhance the quality, utility, and
clarity of the information to be
collected; and (4) Minimize the burden
of the collection of information on those
who are to respond, including the use
of appropriate automated, electronic,
mechanical, or other technological
collection techniques or other forms of
information technology.
Direct Comments to OMB: Written
comments and/or suggestions regarding
VerDate Aug<31>2005
15:23 Oct 25, 2007
Jkt 214001
the item(s) contained in this notice,
especially regarding the estimated
public burden and associated response
time, should be directed to the: Office
of Management and Budget, Office of
Regulatory Affairs, New Executive
Office Building, Room 10235,
Washington, DC 20503, Attention: Desk
Officer for NIH. To request more
information on the proposed project or
to obtain a copy of the data collection
plans and instruments, contact: Dr. Jean
Olson, Epidemiology Branch, Division
of Prevention and Population Sciences,
NHLBI, NIH, II Rockledge Centre, 6701
Rockledge Drive, Suite 10018, MSC #
7936, Bethesda, MD, 20892–7936, or
call 301–435–0397 (non-toll-free
number), or e-mail your request,
including your address to:
OlsonJ@nhlbi.nih.gov.
Comments Due Date: Comments
regarding this information collection are
best assured of having their full effect if
PO 00000
Frm 00068
Fmt 4703
Sfmt 4703
received within 30-days of the date of
this publication.
Dated: October 16, 2007.
Mike Lauer,
Director, Division of Prevention and
Population Sciences, NHLBI, National
Institutes of Health.
Dated: October 18, 2007.
Suzanne Freeman,
OMB Clearance Officer, NHLBI, National
Institutes of Health.
[FR Doc. E7–21103 Filed 10–25–07; 8:45 am]
BILLING CODE 4140–01–P
DEPARTMENT OF HEALTH AND
HUMAN SERVICES
National Institutes of Health
Government-Owned Inventions;
Availability for Licensing
National Institutes of Health,
Public Health Service, HHS.
AGENCY:
E:\FR\FM\26OCN1.SGM
26OCN1
60864
ACTION:
Federal Register / Vol. 72, No. 207 / Friday, October 26, 2007 / Notices
Notice.
rmajette on PROD1PC64 with NOTICES
SUMMARY: The inventions listed below
are owned by an agency of the U.S.
Government and are available for
licensing in the U.S. in accordance with
35 U.S.C. 207 to achieve expeditious
commercialization of results of
federally-funded research and
development. Foreign patent
applications are filed on selected
inventions to extend market coverage
for companies and may also be available
for licensing.
ADDRESSES: Licensing information and
copies of the U.S. patent applications
listed below may be obtained by writing
to the indicated licensing contact at the
Office of Technology Transfer, National
Institutes of Health, 6011 Executive
Boulevard, Suite 325, Rockville,
Maryland 20852–3804; telephone: 301/
496–7057; fax: 301/402–0220. A signed
Confidential Disclosure Agreement will
be required to receive copies of the
patent applications.
Cell-Nanofiber Composite Based
Engineered Cartilage
Description of Invention: Available for
licensing and commercial development
is a tissue-engineered cartilage derived
from a cellular composite made from a
biodegradable, biocompatible polymeric
nanofibrous matrix having dispersed
chondrocytes or adult mesenchymal
stem cells. More particularly, tissueengineered cartilage can be prepared
where the cartilage has a biodegradable
and biocompatible nanofibrous polymer
matrix prepared by electrospinning and
a plurality of chondocytes or
mesenchymal stem cells dispersed in
the pores of the matrix. The tissueengineered cartilage possesses
compressive strength properties similar
to natural cartilage.
The electrospinning process is a
simple, economical means to produce
biomaterial matrices or scaffolds of
ultra-fine fibers derived from a variety
of biodegradable polymers (Li WJ, et al.
J. Biomed. Mater. Res. 2002; 60:613–21).
Nanofibrous scaffolds (NFSs) formed by
electrospinning, by virtue of structural
similarity to natural extracellular matrix
(ECM), may represent promising
structures for tissue engineering
applications. Electrospun threedimensional NFSs are characterized by
high porosity with a wide distribution
of pore diameter, high-surface area to
volume ratio and morphological
similarities to natural collagen fibrils (Li
WJ, et al. J. Biomed. Mater. Res. 2002;
60:613–21). These physical
characteristics promote favorable
biological responses of seeded cells in
vitro and in vivo, including enhanced
VerDate Aug<31>2005
15:23 Oct 25, 2007
Jkt 214001
cell attachment, proliferation,
maintenance of the chondrocytic
phenotype (Li WJ, et al. J. Biomed.
Mater. Res. 2003; 67A: 1105–14), and
support of chondrogenic differentiation
(Li WJ, et al. Biomaterials 2005; 26:599–
609) as well as other connective tissue
linage differentiation (Li WJ, et al.
Biomaterials 2005; 26:5158–5166). The
invention based on cell-nanofiber
composite represents a candidate
engineered tissue for cell-based
approaches to cartilage repair.
Application: Cartilage repair and
methods for making tissue-engineered
cartilage.
Developmental Status:
Electrospinning method is fully
developed and cartilage has been
synthesized.
Inventors: Wan-Ju Li and Rocky Tuan
(NIAMS).
Publications: The invention is further
described in:
1. W–J Li et al. Engineering
controllable anisotropy in electrospun
biodegradable nanofibrous scaffolds for
musculoskeletal tissue engineering. J
Biomech. 2007;40(8):1686–1693. Epub
2006 Oct 23, doi:10.1016/
jbiomech.2006.09.004.
2. W–J Li et al. Fabrication and
characterization of six electrospun
poly(alpha-hydroxy ester)-based fibrous
scaffolds for tissue engineering
applications. Acta Biomater. 2006
Jul;2(4):377–385. Epub 2006 May 6,
doi:10.1016/j.actbio.2006.02.005.
3. CK Kuo et al. Cartilage tissue
engineering: its potential and uses. Curr
Opin Rheumatol. 2006 Jan;18(1):64–73.
Review.
4. W–J Li et al. Multilineage
differentiation of human mesenchymal
stem cells in a three-dimensional
nanofibrous scaffold. Biomaterials. 2005
Sep;26(25):5158–5166.
Patent Status:
U.S. Provisional Application No. 60/
690,998 filed 15 Jun 2005 (HHS
Reference No. E–116–2005/0–US–01).
PCT Application No. PCT/US2006/
0237477 filed 15 Jun 2006 (HHS
Reference No. E–116–2005/0–PCT–02).
Licensing Status: Available for
exclusive or non-exclusive licensing.
Licensing Contact: Peter A. Soukas,
J.D.; 301/435–4646;
soukasp@mail.nih.gov.
Cell-Nanofiber Composite and CellNanofiber Composite Amalgam Based
Engineered Intervertebral Disc
Description of Invention: Diseased or
damaged musculoskeletal tissues are
often replaced by an artificial material,
cadaver tissue or donated, allogenic
tissue. Tissue engineering offers an
attractive alternative whereby a live,
PO 00000
Frm 00069
Fmt 4703
Sfmt 4703
natural tissue is generated from a
construct made up of a patient’s own
cells or an acceptable/compatible cell
source in combination with a
biodegradable scaffold for replacement
of defective tissue.
Degeneration of the intervertebral disc
(IVD) is a common and significant
source of morbidity in our society.
Approximately 8 of 10 adults at some
point in their life will experience an
episode of significant low back pain,
with the majority improving without
any formal treatment. However, for the
subject requiring surgical management
current interventions focus on fusion of
the involved IVD levels, which
eliminates pain but does not attempt to
restore disc function. Approximately
200,000 spinal fusions were performed
in the United States in 2002 to treat pain
associated with lumbar disc
degeneration. Spinal fusion however is
thought to significantly alter the
biomechanics of the disc and lead to
further degeneration, or adjacent
segment disease. Therefore, in the past
decade there has been mounting interest
in the concept of IVD replacement. The
replacement of the IVD holds
tremendous potential as an alternative
to spinal fusion for the treatment of
degenerative disc disease by offering a
safer alternative to current spinal fusion
practices.
At the present time, several disc
replacement implants are at different
stages of preclinical and clinical testing.
These disc replacement technologies are
designed to address flexion, extension,
and lateral bending motions; however,
they do little to address compressive
forces and their longevity is limited due
to their inability to biointegrate.
Therefore, a cell-based tissue
engineering approach offers the most
promising alternative to replace the
degenerated IVD. Current treatment for
injuries that penetrate subchondral bone
include subchondral drilling, periosteal
tissue grafting, osteochondral
allografting, chondrogenic cell and
transplantation; but are limited due to
suboptimal integration with host
tissues.
The present invention claims tissue
engineered intervertebral discs
comprising a nanofibrous polymer
hydrogel amalgam having cells
dispersed therein, methods of
fabricating tissue engineered
intervertebral discs by culturing a
mixture of stem cells or intervertebral
disc cells and a electrospun nanofibrous
polymer hydrogel amalgam in a suitable
bioreactor, and methods of treatment
comprising implantation of tissue
engineered intervertebral disc into a
subject.
E:\FR\FM\26OCN1.SGM
26OCN1
Federal Register / Vol. 72, No. 207 / Friday, October 26, 2007 / Notices
rmajette on PROD1PC64 with NOTICES
Application: Intervertebral disc bioconstructs and electrospinning methods
for fabrication of the discs.
Developmental Status: Prototype
devices have been fabricated and
preclinical studies have been
performed.
Inventors: Wan-Ju Li, Leon Nesti,
Rocky Tuan (NIAMS).
Patent Status:
U.S. Provisional Application No. 60/
847,839 filed 27 Sep 2006 (HHS
Reference No. E–309–2006/0–US–01).
U.S. Provisional Application No. 60/
848,284 filed 28 Sep 2006 (HHS
Reference No. E–309–2006/1–US–01).
Licensing Status: Available for
exclusive or non-exclusive licensing.
Licensing Contact: Peter A. Soukas,
J.D.; 301/435–4646;
soukasp@mail.nih.gov.
Bioreactor Device and Method and
System for Fabricating Tissue
Description of Technology: Available
for licensing and commercial
development is a millifluidic bioreactor
system for culturing, testing, and
fabricating natural or engineered cells
and tissues. The system consists of a
millifluidic bioreactor device and
methods for sample culture. Biologic
samples that can be utilized include
cells, scaffolds, tissue explants, and
organoids. The system is microchip
controlled and can be operated in
closed-loop, providing controlled
delivery of medium and biofactors in a
sterile temperature regulated
environment under tabletop or
incubator use. Sample perfusion can be
applied periodically or continuously, in
a bidirectional or unidirectional
manner, and medium re-circulated.
Advantages:
The device is small in size, and of
conventional culture plate format.
Provides the ability to grow larger
biologic samples than microfluidic
systems, while utilizing smaller
medium volumes than conventional
bioreactors. The bioreactor culture
chamber is adapted to contain sample
volumes on a milliliter scale (10 [mu]L
to 1 mL, with a preferred size of 100
[mu]L), significantly larger than
chamber volumes in microfluidic
systems (on the order of 1 [mu]L).
Typical microfluidic systems are
designed to culture cells and not larger
tissue samples.
The integrated medium reservoirs and
bioreactor chamber design provide for,
(1) concentration of biofactors produced
by the biologic sample, and (2) the use
of smaller amounts of exogenous
biofactor supplements in the culture
medium. The local medium volume
(within the vicinity of the sample) is
VerDate Aug<31>2005
15:23 Oct 25, 2007
Jkt 214001
less than twice the sample volume. The
total medium volume utilized is small,
preferably 2 ml, significantly smaller
than conventional bioreactors (typically
using 500–1000 mL).
Provides for real-time monitoring of
sample growth and function in response
to stimuli via an optical port and
embedded sensors. The optical port
provides for microscopy and
spectroscopy measurements using
transmitted, reflected, or emitted (e.g.,
fluorescent, chemiluminescent) light.
The embedded sensors provide for
measurement of culture fluid pressure
and sample pH, oxygen tension, and
temperature.
Capable of providing external
stimulation to the biologic sample,
including mechanical forces (e.g. fluid
shear, hydrostatic pressure, matrix
compression, microgravity via
clinorotation), electrical fields (e.g., AC
currents), and biofactors (e.g., growth
factors, cytokines) while monitoring
their effect in real-time via the
embedded sensors, optical port, and
medium sampling port.
Monitoring of biologic sample
response to external stimulation can be
performed non-invasively and nondestructively through the embedded
sensors, optical port, and medium
sampling port. Testing of tissue
mechanical and electrical properties
(e.g., stiffness, permeability, loss
modulus via stress or creep test,
electrical impedance) can be performed
over time without removing the sample
from the bioreactor device.
The bioreactor sample chamber can be
constructed with multiple levels fed via
separate perfusion circuits, facilitating
the growth and production of
multiphasic tissues.
Application: Cartilage repair and
methods for making tissue-engineered
cartilage.
Development Stage: Electrospinning
method is fully developed and cartilage
has been synthesized.
Inventors: Juan M. Taboas (NIAMS),
Rocky S. Tuan (NIAMS), et al.
Patent Status:
U.S. Provisional Application No. 60/
701,186 filed 20 Jul 2005 (HHS
Reference No. E–042–2005/0–US–01).
PCT Application No. PCT/US2006/
028417 filed 20 Jul 2006, which
published as WO 2007/012071 on 25 Jan
2007 (HHS Reference No. E–042–2005/
0–PCT–02).
Licensing Status: Available for
exclusive or non-exclusive licensing.
Licensing Contact: Peter A. Soukas,
J.D.; 301/435–4646;
soukasp@mail.nih.gov.
PO 00000
Frm 00070
Fmt 4703
Sfmt 4703
60865
Dated: October 22, 2007.
Steven M. Ferguson,
Director, Division of Technology Development
and Transfer, Office of Technology Transfer,
National Institutes of Health.
[FR Doc. E7–21100 Filed 10–25–07; 8:45 am]
BILLING CODE 4140–01–P
DEPARTMENT OF HEALTH AND
HUMAN SERVICES
National Institutes of Health
Public Teleconference Regarding
Licensing and Collaborative Research
Opportunities for: Treatment of
Autoimmune and Allergic Disorders
(NIAID)
National Institutes of Health,
Public Health Service, HHS.
ACTION: Notice.
AGENCY:
Technology Summary
These technologies relate to
compositions and methods useful in
treating autoimmune diseases generally,
and Multiple Sclerosis specifically.
Technology Description
Scientists at the NIH have discovered
a method for the treatment or
prevention of autoimmune diseases,
allergic or atopic disorders, and graft
rejections. This method selectively
induces apoptosis of disease causing T
lymphocytes, while sparing the majority
of T-cells. Cell death is achieved by the
cyclical administration of disease
specific antigens and IL–2.
Further, the NIH scientists have
developed compositions and methods
for clinical assessment, diagnosis and
treatment of Multiple Sclerosis (MS).
The compositions are molecules related
to the human proteolipid protein (PLP),
and the 21.5 kDA fetal isoform of
human myelin basic protein (MBP),
including nucleic acids and
polypeptides. The polypeptides can be
used to assay T-cells for responsiveness
to MBP and PLP epitopes. They are
further useful as therapeutic agents for
treating MS by inducing T-cell
apoptosis. The inventors have
demonstrated that treatment with MP4,
a protein chimera of MBP, and a
modified form of PLP, termed PLP4,
prevented clinical symptoms of MS in
both rodent and non-human primates.
They have also completed primate
toxicity tests demonstrating the
compounds are non-toxic.
Novel application of these methods
described in these technologies include:
Infusion of autoimmune disease
antigen peptides reduces the severity of
allergic diseases.
E:\FR\FM\26OCN1.SGM
26OCN1
]]>Agencies
[Federal Register Volume 72, Number 207 (Friday, October 26, 2007)]
[Notices]
[Pages 60863-60865]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-21100]
-----------------------------------------------------------------------
DEPARTMENT OF HEALTH AND HUMAN SERVICES
National Institutes of Health
Government-Owned Inventions; Availability for Licensing
AGENCY: National Institutes of Health, Public Health Service, HHS.
[[Page 60864]]
ACTION: Notice.
-----------------------------------------------------------------------
SUMMARY: The inventions listed below are owned by an agency of the U.S.
Government and are available for licensing in the U.S. in accordance
with 35 U.S.C. 207 to achieve expeditious commercialization of results
of federally-funded research and development. Foreign patent
applications are filed on selected inventions to extend market coverage
for companies and may also be available for licensing.
ADDRESSES: Licensing information and copies of the U.S. patent
applications listed below may be obtained by writing to the indicated
licensing contact at the Office of Technology Transfer, National
Institutes of Health, 6011 Executive Boulevard, Suite 325, Rockville,
Maryland 20852-3804; telephone: 301/496-7057; fax: 301/402-0220. A
signed Confidential Disclosure Agreement will be required to receive
copies of the patent applications.
Cell-Nanofiber Composite Based Engineered Cartilage
Description of Invention: Available for licensing and commercial
development is a tissue-engineered cartilage derived from a cellular
composite made from a biodegradable, biocompatible polymeric
nanofibrous matrix having dispersed chondrocytes or adult mesenchymal
stem cells. More particularly, tissue-engineered cartilage can be
prepared where the cartilage has a biodegradable and biocompatible
nanofibrous polymer matrix prepared by electrospinning and a plurality
of chondocytes or mesenchymal stem cells dispersed in the pores of the
matrix. The tissue-engineered cartilage possesses compressive strength
properties similar to natural cartilage.
The electrospinning process is a simple, economical means to
produce biomaterial matrices or scaffolds of ultra-fine fibers derived
from a variety of biodegradable polymers (Li WJ, et al. J. Biomed.
Mater. Res. 2002; 60:613-21). Nanofibrous scaffolds (NFSs) formed by
electrospinning, by virtue of structural similarity to natural
extracellular matrix (ECM), may represent promising structures for
tissue engineering applications. Electrospun three-dimensional NFSs are
characterized by high porosity with a wide distribution of pore
diameter, high-surface area to volume ratio and morphological
similarities to natural collagen fibrils (Li WJ, et al. J. Biomed.
Mater. Res. 2002; 60:613-21). These physical characteristics promote
favorable biological responses of seeded cells in vitro and in vivo,
including enhanced cell attachment, proliferation, maintenance of the
chondrocytic phenotype (Li WJ, et al. J. Biomed. Mater. Res. 2003; 67A:
1105-14), and support of chondrogenic differentiation (Li WJ, et al.
Biomaterials 2005; 26:599-609) as well as other connective tissue
linage differentiation (Li WJ, et al. Biomaterials 2005; 26:5158-5166).
The invention based on cell-nanofiber composite represents a candidate
engineered tissue for cell-based approaches to cartilage repair.
Application: Cartilage repair and methods for making tissue-
engineered cartilage.
Developmental Status: Electrospinning method is fully developed and
cartilage has been synthesized.
Inventors: Wan-Ju Li and Rocky Tuan (NIAMS).
Publications: The invention is further described in:
1. W-J Li et al. Engineering controllable anisotropy in electrospun
biodegradable nanofibrous scaffolds for musculoskeletal tissue
engineering. J Biomech. 2007;40(8):1686-1693. Epub 2006 Oct 23,
doi:10.1016/jbiomech.2006.09.004.
2. W-J Li et al. Fabrication and characterization of six
electrospun poly(alpha-hydroxy ester)-based fibrous scaffolds for
tissue engineering applications. Acta Biomater. 2006 Jul;2(4):377-385.
Epub 2006 May 6, doi:10.1016/j.actbio.2006.02.005.
3. CK Kuo et al. Cartilage tissue engineering: its potential and
uses. Curr Opin Rheumatol. 2006 Jan;18(1):64-73. Review.
4. W-J Li et al. Multilineage differentiation of human mesenchymal
stem cells in a three-dimensional nanofibrous scaffold. Biomaterials.
2005 Sep;26(25):5158-5166.
Patent Status:
U.S. Provisional Application No. 60/690,998 filed 15 Jun 2005 (HHS
Reference No. E-116-2005/0-US-01).
PCT Application No. PCT/US2006/0237477 filed 15 Jun 2006 (HHS
Reference No. E-116-2005/0-PCT-02).
Licensing Status: Available for exclusive or non-exclusive
licensing.
Licensing Contact: Peter A. Soukas, J.D.; 301/435-4646;
soukasp@mail.nih.gov.
Cell-Nanofiber Composite and Cell-Nanofiber Composite Amalgam Based
Engineered Intervertebral Disc
Description of Invention: Diseased or damaged musculoskeletal
tissues are often replaced by an artificial material, cadaver tissue or
donated, allogenic tissue. Tissue engineering offers an attractive
alternative whereby a live, natural tissue is generated from a
construct made up of a patient's own cells or an acceptable/compatible
cell source in combination with a biodegradable scaffold for
replacement of defective tissue.
Degeneration of the intervertebral disc (IVD) is a common and
significant source of morbidity in our society. Approximately 8 of 10
adults at some point in their life will experience an episode of
significant low back pain, with the majority improving without any
formal treatment. However, for the subject requiring surgical
management current interventions focus on fusion of the involved IVD
levels, which eliminates pain but does not attempt to restore disc
function. Approximately 200,000 spinal fusions were performed in the
United States in 2002 to treat pain associated with lumbar disc
degeneration. Spinal fusion however is thought to significantly alter
the biomechanics of the disc and lead to further degeneration, or
adjacent segment disease. Therefore, in the past decade there has been
mounting interest in the concept of IVD replacement. The replacement of
the IVD holds tremendous potential as an alternative to spinal fusion
for the treatment of degenerative disc disease by offering a safer
alternative to current spinal fusion practices.
At the present time, several disc replacement implants are at
different stages of preclinical and clinical testing. These disc
replacement technologies are designed to address flexion, extension,
and lateral bending motions; however, they do little to address
compressive forces and their longevity is limited due to their
inability to biointegrate. Therefore, a cell-based tissue engineering
approach offers the most promising alternative to replace the
degenerated IVD. Current treatment for injuries that penetrate
subchondral bone include subchondral drilling, periosteal tissue
grafting, osteochondral allografting, chondrogenic cell and
transplantation; but are limited due to suboptimal integration with
host tissues.
The present invention claims tissue engineered intervertebral discs
comprising a nanofibrous polymer hydrogel amalgam having cells
dispersed therein, methods of fabricating tissue engineered
intervertebral discs by culturing a mixture of stem cells or
intervertebral disc cells and a electrospun nanofibrous polymer
hydrogel amalgam in a suitable bioreactor, and methods of treatment
comprising implantation of tissue engineered intervertebral disc into a
subject.
[[Page 60865]]
Application: Intervertebral disc bio-constructs and electrospinning
methods for fabrication of the discs.
Developmental Status: Prototype devices have been fabricated and
preclinical studies have been performed.
Inventors: Wan-Ju Li, Leon Nesti, Rocky Tuan (NIAMS).
Patent Status:
U.S. Provisional Application No. 60/847,839 filed 27 Sep 2006 (HHS
Reference No. E-309-2006/0-US-01).
U.S. Provisional Application No. 60/848,284 filed 28 Sep 2006 (HHS
Reference No. E-309-2006/1-US-01).
Licensing Status: Available for exclusive or non-exclusive
licensing.
Licensing Contact: Peter A. Soukas, J.D.; 301/435-4646;
soukasp@mail.nih.gov.
Bioreactor Device and Method and System for Fabricating Tissue
Description of Technology: Available for licensing and commercial
development is a millifluidic bioreactor system for culturing, testing,
and fabricating natural or engineered cells and tissues. The system
consists of a millifluidic bioreactor device and methods for sample
culture. Biologic samples that can be utilized include cells,
scaffolds, tissue explants, and organoids. The system is microchip
controlled and can be operated in closed-loop, providing controlled
delivery of medium and biofactors in a sterile temperature regulated
environment under tabletop or incubator use. Sample perfusion can be
applied periodically or continuously, in a bidirectional or
unidirectional manner, and medium re-circulated.
Advantages:
The device is small in size, and of conventional culture plate
format.
Provides the ability to grow larger biologic samples than
microfluidic systems, while utilizing smaller medium volumes than
conventional bioreactors. The bioreactor culture chamber is adapted to
contain sample volumes on a milliliter scale (10 [mu]L to 1 mL, with a
preferred size of 100 [mu]L), significantly larger than chamber volumes
in microfluidic systems (on the order of 1 [mu]L). Typical microfluidic
systems are designed to culture cells and not larger tissue samples.
The integrated medium reservoirs and bioreactor chamber design
provide for, (1) concentration of biofactors produced by the biologic
sample, and (2) the use of smaller amounts of exogenous biofactor
supplements in the culture medium. The local medium volume (within the
vicinity of the sample) is less than twice the sample volume. The total
medium volume utilized is small, preferably 2 ml, significantly smaller
than conventional bioreactors (typically using 500-1000 mL).
Provides for real-time monitoring of sample growth and function in
response to stimuli via an optical port and embedded sensors. The
optical port provides for microscopy and spectroscopy measurements
using transmitted, reflected, or emitted (e.g., fluorescent,
chemiluminescent) light. The embedded sensors provide for measurement
of culture fluid pressure and sample pH, oxygen tension, and
temperature.
Capable of providing external stimulation to the biologic sample,
including mechanical forces (e.g. fluid shear, hydrostatic pressure,
matrix compression, microgravity via clinorotation), electrical fields
(e.g., AC currents), and biofactors (e.g., growth factors, cytokines)
while monitoring their effect in real-time via the embedded sensors,
optical port, and medium sampling port.
Monitoring of biologic sample response to external stimulation can
be performed non-invasively and non-destructively through the embedded
sensors, optical port, and medium sampling port. Testing of tissue
mechanical and electrical properties (e.g., stiffness, permeability,
loss modulus via stress or creep test, electrical impedance) can be
performed over time without removing the sample from the bioreactor
device.
The bioreactor sample chamber can be constructed with multiple
levels fed via separate perfusion circuits, facilitating the growth and
production of multiphasic tissues.
Application: Cartilage repair and methods for making tissue-
engineered cartilage.
Development Stage: Electrospinning method is fully developed and
cartilage has been synthesized.
Inventors: Juan M. Taboas (NIAMS), Rocky S. Tuan (NIAMS), et al.
Patent Status:
U.S. Provisional Application No. 60/701,186 filed 20 Jul 2005 (HHS
Reference No. E-042-2005/0-US-01).
PCT Application No. PCT/US2006/028417 filed 20 Jul 2006, which
published as WO 2007/012071 on 25 Jan 2007 (HHS Reference No. E-042-
2005/0-PCT-02).
Licensing Status: Available for exclusive or non-exclusive
licensing.
Licensing Contact: Peter A. Soukas, J.D.; 301/435-4646;
soukasp@mail.nih.gov.
Dated: October 22, 2007.
Steven M. Ferguson,
Director, Division of Technology Development and Transfer, Office of
Technology Transfer, National Institutes of Health.
[FR Doc. E7-21100 Filed 10-25-07; 8:45 am]
BILLING CODE 4140-01-P
