Peptide-B12-IF Complex for Oral Delivery Stability
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Solution Overview
Problem
Current methods for delivering peptide drugs orally face challenges such as pre-systemic enzymatic degradation and poor penetration through the intestinal mucosa, leading to low bioavailability and inconvenient administration routes.
Innovation Solution
Conjugating peptides to Vitamin B12 and complexing them with intrinsic factor (IF) to protect against protease degradation, allowing for enhanced gastrointestinal absorption without toxic side effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If peptides are administered orally, then patient acceptability and compliance are improved, but pre-systemic enzymatic degradation occurs leading to low bioavailability
Solution Approach 1:
The patent uses intrinsic factor as an intermediary protein that binds to the peptide drug and protects it from proteolytic degradation in the gastrointestinal tract. This carrier protein facilitates the peptide's survival through the digestive system and enhances its absorption across the intestinal mucosa, thereby resolving the contradiction between oral administration convenience and bioavailability reliability.
2Reliability
If absorption-enhancing excipients are used, then gastrointestinal absorption is improved, but toxic side effects occur
Solution Approach 1:
The patent employs intrinsic factor, a naturally occurring protein in the human body, as the absorption-enhancing agent. This self-service approach utilizes the body's own proteins to facilitate peptide absorption without introducing foreign excipients that cause toxicity. The intrinsic factor binds to the peptide and mediates its absorption across the intestinal mucosa through physiological mechanisms, eliminating toxic side effects while maintaining absorption enhancement.
3Reliability
If peptide drugs are administered by parenteral route, then bioavailability is improved, but administration convenience deteriorates
Solution Approach 1:
The patent employs intrinsic factor as a natural carrier protein that enables oral delivery of peptide drugs with high bioavailability. By binding to the peptide and facilitating its absorption across the intestinal mucosa through physiological mechanisms, intrinsic factor allows patients to self-administer orally rather than requiring parenteral injections, thus improving administration convenience while maintaining reliability.
4Stability of the object's composition
If functional excipients are included in drug delivery systems, then peptide stability is improved, but manufacturing costs increase
Solution Approach 1:
The patent utilizes intrinsic factor, a naturally occurring human protein, to protect peptides from proteolytic degradation. This approach eliminates the need for expensive synthetic stabilizing excipients by employing the body's own proteins. The intrinsic factor binds to the peptide and protects it during gastrointestinal transit, achieving peptide stability through a biologically available, cost-effective mechanism rather than requiring complex and expensive manufacturing processes.
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 peptide-B12-IF complex significantly increases peptide bioavailability by protecting against proteolytic degradation, enabling effective oral delivery and absorption, as demonstrated by improved stability and function against pancreatic and intestinal proteases.
Implementation Method 1
The peptide is conjugated to vitamin B12 and the B12 conjugate is then complexed with intrinsic factor... protects the peptide from protease degradation
Implementation Method 2
enhancing gastrointestinal absorption without toxic side effects... enabling effective oral delivery and absorption
Data Source
AI summary
The present invention relates to the digestion of peptides by pancreatic proteases and, more specifically, to compositions and methods for protecting against protease digestion.