Biologically Active Complex Preparation at Moderate Temperature
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Solution Overview
Problem
Existing methods for preparing biologically active complexes, such as HAMLET and BAMLET, rely heavily on the presence of specific salt mixtures like phosphate buffered saline (PBS), which can impact the activity of the product, and often require high temperatures that may denature proteins, complicating their preparation and handling.
Innovation Solution
A method involving the dissolution of a polypeptide element and oleic acid in an aqueous solvent with a specific salt balance, including sodium or potassium chloride and disodium or mono-potassium phosphate, at moderate temperatures up to 50°C, facilitates the formation of biologically active complexes without extensive heating, allowing for easier preparation and handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high temperatures are used to prepare biologically active complexes, then dissolution and complex formation are enhanced, but protein denaturation occurs compromising therapeutic activity
Solution Approach 1:
The patent changes the ionic composition parameters of the aqueous solvent by using specific salt ratios (e.g., NaCl:phosphate ratios) and concentrations to enable complex formation at lower temperatures (below 40°C), thereby maintaining protein stability while achieving adequate dissolution and complex formation efficiency
Solution Approach 2:
The patent introduces specific salt mixtures as intermediary substances that facilitate protein dissolution and complex formation at reduced temperatures. The salts act as mediators between the hydrophobic protein/lipid components and the aqueous environment, enabling the reaction to proceed without high temperature denaturation
2Stability of the object's composition
If specific salt mixtures like PBS are used to prepare complexes, then complex stability is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent simplifies the salt mixture composition by defining specific NaCl and phosphate concentrations and ratios that achieve adequate complex stability without requiring the full complexity of standard PBS formulations, thereby reducing manufacturing steps and cost while maintaining acceptable stability
Solution Approach 2:
The patent uses a simplified partial salt mixture that provides the essential ionic strength and buffering capacity needed for complex stability without including all components of complete PBS formulations, achieving sufficient stability with reduced complexity
3Ease of manufacture
If extensive heating is applied during preparation, then dissolution of components is enhanced, but handling and storage difficulty increase due to denaturation
Solution Approach 1:
The patent changes the chemical environment parameters by optimizing salt concentrations and ratios to enable adequate dissolution of polypeptide and oleic acid at lower temperatures, producing complexes that are easier to handle and store without denaturation-related complications
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 method enables the formation of biologically active complexes that exhibit a clear dose-dependent response, maintaining therapeutic activity, particularly in selectively killing tumor cells, with improved stability and ease of formulation into pharmaceutical compositions.
Implementation Method 1
dissolving a polypeptide element and oleic acid in an aqueous solvent with a specific salt balance
Data Source
AI summary
The invention provides a method for preparing a biologically active complex, said method comprising dissolving a mixture of a polypeptide element, such as alphalactalbumin or fragments thereof, in powder form and oleic acid or a pharmaceutically acceptable salt thereof also in solid form, in an aqueous solvent comprising a mixture of at least two and preferably three salts, wherein the method is carried out at moderate temperatures. The preparation does not require extensive heating and so is simple and efficient to carry out.