BMP Peptides Enhanced by Protease Cleavage
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Solution Overview
Problem
Current methods for using bone morphogenic proteins (BMPs) are limited in their ability to enhance osteoinductive, chondroinductive, and ligament/tendon differentiating activities, as they often require specific sequences and combinations that are not effectively achieved with existing proteases and growth factor compositions.
Innovation Solution
The development of isolated peptides and fusion proteins with specific amino acid sequences, combined with proteases like collagenase, dispase, and trypsin, to enhance the activity of BMPs, promoting osteogenesis, chondrogenesis, and ligament/tendon genesis by interacting with cellular receptors and signaling pathways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If unmodified BMPs are used, then the treatment is simple, but the osteoinductive, chondroinductive, and ligament/tendon differentiating activities are limited
Solution Approach 1:
The patent applies composite materials by combining BMPs with specific proteases (collagenase, dispase, trypsin) and isolated peptides to create a composite composition that enhances osteoinductive activity. This composite approach allows the proteases to cleave the BMPs at specific sites, generating active fragments that work synergistically to improve differentiation activity while maintaining a manageable composition structure.
Solution Approach 2:
The patent applies segmentation by using proteases to cleave the BMP polypeptide chain into specific fragments or domains. This segmentation releases bioactive peptides from the full-length BMP, creating smaller, more active units that can more effectively interact with cellular receptors and signaling pathways, thereby enhancing the biological activity.
2Reliability
If specific proteases and growth factor compositions are used, then the differentiating activity is enhanced, but the composition complexity increases
Solution Approach 1:
The patent applies universality by selecting proteases (collagenase, dispase, trypsin) that can perform multiple functions: they cleave BMPs at specific sites, generate bioactive fragments, and potentially interact with other components in the composition. These proteases serve as multi-functional catalysts that enhance chondroinductive activity while their established biochemical properties help manage the complexity of the composition.
3Productivity
If truncated BMP peptides are used, then the production efficiency is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent applies parameter changes by modifying the amino acid sequence parameters of BMPs through proteolytic cleavage. The proteases change the peptide chain length and sequence by cleaving at specific amino acid residues, generating truncated peptides with precise N- or C-terminal endings. This parameter change approach allows production of active fragments without requiring de novo synthesis of each precise sequence.
Solution Approach 2:
The patent applies intermediary by using proteases as mediator enzymes that facilitate the precise generation of truncated BMP peptides. Rather than directly synthesizing precise peptide sequences, the proteases act as intermediaries that cleave full-length BMPs at specific sites, indirectly producing the desired truncated peptides with high sequence precision through enzyme-catalyzed specificity.
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 described compositions significantly increase alkaline phosphatase activity and promote cellular differentiation, leading to enhanced osteoinductive, chondroinductive, and ligament/tendon differentiating activities compared to unmodified BMPs, with improved efficacy when used with specific proteases.
Implementation Method 1
The invention relates to compositions including a protease and a growth factor comprising a bone morphogenic protein (BMP) or a variant thereof
Implementation Method 2
promoting osteogenesis, chondrogenesis, and ligament/tendon genesis by interacting with cellular receptors and signaling pathways
Data Source
AI summary
The invention relates to truncated growth factors and variants thereof. The invention also relates to methods of making and using the truncated growth factors. The invention further relates to compositions including a protease and a growth factor comprising a bone morphogenic protein (BMP) or a variant thereof. The invention also relates to methods of using the composition.


