Source 1primary paper2026MED
Toolkit/amine functionalized micro- and ultrafiltration membranes
amine functionalized micro- and ultrafiltration membranes
Also known as: amine functionalized membranes, functionalized membranes
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Amine functionalization of the membrane pore with a hydrogel exhibited >70 % retention of 20 nm negatively charged particles even when λ>40 and 80 % retention of DNA and protein when λ>160.
Usefulness & Problems
Why this is useful
This membrane format uses amine-functionalized hydrogel within membrane pores to increase retention of negatively charged particles and biomolecular impurities. The abstract frames it as a way to extend membrane selectivity beyond size exclusion alone.; enhancing selective retention in porous membrane separations; potential impurity retention during AAV purification without compromising vector recovery
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This membrane format uses amine-functionalized hydrogel within membrane pores to increase retention of negatively charged particles and biomolecular impurities. The abstract frames it as a way to extend membrane selectivity beyond size exclusion alone.
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enhancing selective retention in porous membrane separations
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potential impurity retention during AAV purification without compromising vector recovery
Problem solved
It addresses poor selectivity in cases where particles would otherwise transmit through pores because the pore-to-particle size ratio is large. The paper specifically highlights impurity retention relevant to viral vector purification.; improves selectivity when pore-to-particle size ratio is too large for size exclusion alone
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It addresses poor selectivity in cases where particles would otherwise transmit through pores because the pore-to-particle size ratio is large. The paper specifically highlights impurity retention relevant to viral vector purification.
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improves selectivity when pore-to-particle size ratio is too large for size exclusion alone
Problem links
improves selectivity when pore-to-particle size ratio is too large for size exclusion alone
LiteratureIt addresses poor selectivity in cases where particles would otherwise transmit through pores because the pore-to-particle size ratio is large. The paper specifically highlights impurity retention relevant to viral vector purification.
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It addresses poor selectivity in cases where particles would otherwise transmit through pores because the pore-to-particle size ratio is large. The paper specifically highlights impurity retention relevant to viral vector purification.
Published Workflows
Objective: Systematically determine how pore-to-particle size ratio and membrane functionalization govern retention, transmission, and flux behavior in porous membranes, with implications for scalable viral vector purification.
Why it works: The workflow combines a size-ratio framework with controlled experiments and modeling so that size exclusion and interaction-driven retention can be separated and interpreted mechanistically.
size-ratio-governed retention and transmissionelectrostatic interactions introduced by amine-functionalized hydrogel poresliterature data integrationcontrolled filtration experimentsmodeling of flux decline and pore size reduction
Stages
- 1.Literature and framework integration(in_silico_filter)
This stage establishes a unified framework for relating pore size and particle size to retention and transmission across applications.
Selection: literature data organized around pore-to-particle size ratio λ
- 2.Controlled filtration experiments(functional_characterization)
This stage tests how λ and membrane regime affect retention and flux behavior under controlled conditions.
Selection: measure membrane performance using model nanoparticles, proteins, and virus-like particles
- 3.Functionalized membrane characterization(secondary_characterization)
This stage determines whether targeted pore functionalization can expand the functional range of porous membranes beyond size exclusion alone.
Selection: evaluate whether amine-functionalized hydrogel pores enhance retention at λ values where transmission would otherwise dominate
- 4.Model-based validation(confirmatory_validation)
This stage provides additional validation that functionalization increases interactions affecting transport behavior.
Selection: model prediction of flux decline and pore size reduction
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Architecture: A reusable architecture pattern for arranging parts into an engineered system.
Target processes
recombinationselectionImplementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationimplementation constraint: payload burdenoperating role: regulator
It requires a microfiltration or ultrafiltration membrane whose pores are modified with an amine-functionalized hydrogel. Its operation also depends on filtration experiments and conditions where electrostatic interactions matter.; requires amine functionalization of membrane pores with a hydrogel; performance depends on electrostatic interactions
The abstract does not show that this membrane alone solves full AAV purification or establishes direct AAV separation performance experimentally. It also does not specify all manufacturing or reuse constraints.; exact membrane substrate and hydrogel chemistry are not specified in the abstract; AAV application is presented as an implication rather than direct experimental validation in the abstract
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
For AAV purification, conventional microfiltration membranes transmit AAV with minimal selectivity, whereas functionalized membranes may selectively retain impurities without compromising vector recovery.
The study establishes a unified framework based on λ for membrane selection and design and shows that targeted functionalization expands the functional range of porous membranes.
The enhanced retention observed with amine functionalization is attributed to electrostatic interactions.
As λ increases above 1, transmission dominates, but membrane surface modification can dramatically enhance selectivity.
Amine functionalization of membrane pores with a hydrogel enabled greater than 70% retention of 20 nm negatively charged particles even when λ exceeded 40.
retention 70 %
Amine functionalized membrane pores with hydrogel enabled 80% retention of DNA and protein even when λ exceeded 160.
retention 80 %
Approval Evidence
1 source6 linked approval claimsfirst-pass slug amine-functionalized-micro-and-ultrafiltration-membranes
Amine functionalization of the membrane pore with a hydrogel exhibited >70 % retention of 20 nm negatively charged particles even when λ>40 and 80 % retention of DNA and protein when λ>160.
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application implicationsupports
For AAV purification, conventional microfiltration membranes transmit AAV with minimal selectivity, whereas functionalized membranes may selectively retain impurities without compromising vector recovery.
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framework claimsupports
The study establishes a unified framework based on λ for membrane selection and design and shows that targeted functionalization expands the functional range of porous membranes.
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mechanismsupports
The enhanced retention observed with amine functionalization is attributed to electrostatic interactions.
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performance trendsupports
As λ increases above 1, transmission dominates, but membrane surface modification can dramatically enhance selectivity.
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retention performancesupports
Amine functionalization of membrane pores with a hydrogel enabled greater than 70% retention of 20 nm negatively charged particles even when λ exceeded 40.
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retention performancesupports
Amine functionalized membrane pores with hydrogel enabled 80% retention of DNA and protein even when λ exceeded 160.
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Comparisons
Source-stated alternatives
The abstract contrasts these membranes with conventional microfiltration membranes, which transmit AAV with minimal selectivity. It also contrasts functionalization-based selectivity with size-ratio-driven retention alone.
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The abstract contrasts these membranes with conventional microfiltration membranes, which transmit AAV with minimal selectivity. It also contrasts functionalization-based selectivity with size-ratio-driven retention alone.
Source-backed strengths
dramatically enhanced selectivity through membrane surface modification; retains negatively charged particles, DNA, and protein at high λ values
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dramatically enhanced selectivity through membrane surface modification
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retains negatively charged particles, DNA, and protein at high λ values
Compared with cell-free system
amine functionalized micro- and ultrafiltration membranes and cell-free system address a similar problem space because they share recombination, selection.
Shared frame: same top-level item type; shared target processes: recombination, selection
Compared with CheRiff
amine functionalized micro- and ultrafiltration membranes and CheRiff address a similar problem space because they share recombination, selection.
Shared frame: same top-level item type; shared target processes: recombination, selection
Strengths here: looks easier to implement in practice.
Compared with luciferin-luciferase pair
amine functionalized micro- and ultrafiltration membranes and luciferin-luciferase pair address a similar problem space because they share recombination, selection.
Shared frame: same top-level item type; shared target processes: recombination, selection
Strengths here: looks easier to implement in practice.
Ranked Citations
- 1.