Fetal Decellularized Nucleus Pulposus Biomaterial for Disc Regeneration
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Solution Overview
Problem
Current treatments for intervertebral disc degeneration, such as spinal fusion and artificial disc implants, compromise spinal motion and face biocompatibility issues, while existing therapies primarily provide structural support or replenish extracellular matrix components rather than promoting intrinsic regeneration of the disc.
Innovation Solution
A biomaterial comprising fetal decellularized nucleus pulposus with elevated collagen type XII and XIV levels, used in pharmaceutical compositions for IVD regeneration, either as an implantable graft or injectable form, including mesenchymal stem cells and exosomes, to stimulate host cells to produce renewed extracellular matrix components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spinal fusion or artificial disc implants are used to relieve mechanical back pain, then pain relief is achieved, but spinal motion is compromised
Solution Approach 1:
The patent employs the host's own NP cells to regenerate the disc tissue, allowing the body to self-repair without external mechanical implants. The fetal decellularized NP scaffold serves as a temporary structure that guides this self-regeneration process, ultimately being replaced by native tissue that restores both pain relief and spinal motion
Solution Approach 2:
The invention changes the approach from mechanical support (implants) to biochemical stimulation (fetal NP extract). By injecting soluble fetal NP extract containing growth factors and ECM components, the treatment transforms the degradation parameters into regeneration parameters, stimulating cells to produce new collagen and proteoglycans while maintaining disc height and motion
2Strength
If exogenous materials or extrinsic cells are used to replenish the NP, then structural support is provided, but intrinsic regeneration of the IVD is not promoted
Solution Approach 1:
The fetal decellularized NP acts as an intermediary between the injected material and the host cells. It contains endogenous growth factors, ECM components, and signaling molecules that mediate the stimulation of host NP cells to produce renewed ECM. This intermediary approach is more effective than direct cell transplantation because it activates the host's own regenerative machinery
Solution Approach 2:
Instead of providing structural support through exogenous scaffolds or cells, the invention inverts the approach by using fetal NP extract to stimulate the host cells to produce their own structural components. The treatment shifts from replacing tissue to activating tissue self-production, leveraging the host's intrinsic regenerative capacity
3Ease of manufacture
If adult NP cells are directly stimulated without fetal material, then treatment is simpler, but regenerative capacity is insufficient due to age-related decline
Solution Approach 1:
The fetal decellularized NP material is prepared in advance with concentrated growth factors, ECM components, and signaling molecules. This preliminary preparation creates a potent regenerative stimulus that, when injected, immediately activates host NP cells. The fetal material serves as a pre-formulated regenerative cocktail that overcomes age-related cellular decline without complicating the injection procedure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The biomaterial effectively stimulates the expression of collagen 2 and aggrecan in host cells, promoting intrinsic regeneration of the intervertebral disc, addressing the limitations of existing treatments by enhancing natural ECM production and providing structural support.
Implementation Method 1
The biomaterial effectively stimulates the expression of collagen 2 and aggrecan in host cells, promoting intrinsic regeneration of the intervertebral disc
Data Source
AI summary
A fetal-origin decellularized nucleus pulposus (NP) allogenic material to regenerate a host's Intervertebral Disc (IVD). The decellularized NP material, obtained from a vertebrate fetus and characterized by comprising high levels of collagen 12 and 14, is used in a pharmacological composition for the treatment of IVD degeneration. The advance is based on the increased ability of the fetal decellularized NP material to stimulate the host constituent cell's to increase the expression of collagen 2 and aggrecan, promoting intrinsic IVD regeneration. A related method includes preparing the pharmaceutical compositions of fetal decellularized material in the form of fragments/microparticles and hydrogel for an injectable mode of administration. The involved material, pharmaceutical compositions and methods may be advantageously used for the prevention and treatment of IVD degeneration and back pain in human and veterinary settings.