Source 1primary paper2026MED
Toolkit/BMP-2_pc
BMP-2_pc
Also known as: recombinant BMP-2 conjugated via a coumarin-based 405 nm-cleavable linker
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
BMP-2_pc is a recombinant BMP-2 construct linked through a coumarin-based 405 nm-photocleavable linker and covalently incorporated into an enzymatically crosslinked collagen-containing hydrogel composite. Blue-light stimulation triggers stepwise release of BMP-2 from the material.
Usefulness & Problems
Why this is useful
This construct provides externally controlled, visible-light-triggered release of BMP-2 from a hydrogel matrix rather than passive diffusion alone. It is useful where temporally staged delivery of an osteogenic growth factor from a biomaterial is desired.
Problem solved
BMP-2_pc addresses the problem of achieving on-demand release of tethered BMP-2 from an enzymatically crosslinked collagen-containing hydrogel while maintaining linker compatibility with the crosslinking chemistry. The reported system specifically enables pulse-wise release under blue-light stimulation.
Problem links
enables externally triggered release of tethered BMP-2
LiteratureIt provides a way to keep BMP-2 immobilized until release is triggered on demand by visible light.
Source:
It provides a way to keep BMP-2 immobilized until release is triggered on demand by visible light.
Published Workflows
Objective: Design a scaffold platform for spatiotemporally controlled osteoinductive signaling by combining enzymatic hydrogel crosslinking, visible-light-triggered BMP-2 release, and porosity-mediated oxygen diffusion for dental pulp stem cell osteogenesis.
Why it works: The abstract presents the workflow as orthogonal control of scaffold formation and growth-factor release: mTG crosslinking forms the matrix without light-initiated polymerization, preserving coumarin integrity, while later blue-light pulses trigger BMP-2 release and alginate leaching improves oxygen transport.
405 nm photocleavage of tethered BMP-2enzymatic crosslinking under physiological conditionsalginate leaching to create microporosityenzymatic hydrogel crosslinkingphototriggered releasestem-cell encapsulationmultimodal material and cell-function characterization
Stages
- 1.Composite hydrogel and photocleavable BMP-2 design(library_design)
This design stage establishes the material architecture intended to avoid photoinitiator-associated toxicity while enabling later light-triggered BMP-2 release.
Selection: Combine enzymatic matrix formation, photocleavable BMP-2 tethering, and sacrificial porogen incorporation to achieve controlled release and oxygen diffusion.
- 2.Cell encapsulation and light-triggering regimen(functional_characterization)
This stage tests whether the designed composite can operate under a defined visible-light stimulation schedule in a relevant stem-cell context.
Selection: Expose encapsulated DPSC composites to daily blue-LED pulses to trigger BMP-2 release during culture.
- 3.Material and biological performance assessment(confirmatory_validation)
This stage confirms whether the composite achieves the coupled material and cell-performance objectives claimed by the design.
Selection: Assess release, porosity, oxygen diffusivity, viability, and osteogenic differentiation to confirm the intended scaffold behavior.
Steps
- 1.Crosslink thiolated marine collagen with microbial transglutaminase under physiological conditionsengineered scaffold matrix
Form the hydrogel network without light-initiated polymerization.
The abstract states this crosslinking mode avoids light-initiated polymerization, reducing risk of radical-initiator-associated toxicity before introducing light-triggered release.
- 2.Conjugate recombinant BMP-2 with a coumarin-based 405 nm-cleavable linker and tether it to the collagen networkphotocleavable growth-factor payload
Install a light-responsive BMP-2 reservoir within the scaffold.
This step creates the releasable BMP-2 component needed before light stimulation can be used to control delivery.
- 3.Incorporate non-crosslinked sodium alginate as a sacrificial porogenporous scaffold component
Create micropores upon alginate diffusion to improve oxygen transport.
The porogen is built into the composite during scaffold preparation so that leaching can later generate the intended porous microenvironment.
- 4.Encapsulate dental pulp stem cells in the compositecell-encapsulation scaffold
Place the engineered scaffold in a relevant osteogenic cell context for testing.
Cells must be present in the scaffold before the light-triggered culture regimen and downstream osteogenic assays can be evaluated.
- 5.Apply daily blue-LED pulses to trigger BMP-2 release during culturelight-responsive scaffold and payload
Trigger stepwise release of tethered BMP-2 in culture.
Light stimulation is applied after scaffold and cell setup because it is the operational trigger for on-demand BMP-2 release.
- 6.Measure release, porosity, oxygen diffusivity, viability, and osteogenic differentiationevaluated scaffold platform
Confirm that the composite achieves controlled release, improved transport properties, cell survival, and osteogenic enhancement.
These readouts are collected after the stimulation regimen because they test whether the engineered design produced the intended material and biological outcomes.
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Architecture: A reusable architecture pattern for arranging parts into an engineered system.
Techniques
No technique tags yet.
Target processes
No target processes tagged yet.
Implementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: sensorswitch architecture: cleavage
The construct uses a coumarin-based linker that is cleavable with 405 nm light and is incorporated into an enzymatically crosslinked collagen-containing hydrogel composite. Microbial transglutaminase was used for crosslinking, and this process was reported to preserve coumarin integrity.
The supplied evidence is limited to linker compatibility during microbial transglutaminase crosslinking and release behavior under blue light. The evidence provided here does not specify molecular construct architecture beyond the coumarin linker, nor does it establish independent replication or broad validation across models.
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
Dental pulp stem cell viability in the composite remained above 90%.
DPSC viability remained >90%.
cell viability 90 %
Dental pulp stem cell viability in the composite remained above 90%.
DPSC viability remained >90%.
cell viability 90 %
Dental pulp stem cell viability in the composite remained above 90%.
DPSC viability remained >90%.
cell viability 90 %
Dental pulp stem cell viability in the composite remained above 90%.
DPSC viability remained >90%.
cell viability 90 %
Dental pulp stem cell viability in the composite remained above 90%.
DPSC viability remained >90%.
cell viability 90 %
Dental pulp stem cell viability in the composite remained above 90%.
DPSC viability remained >90%.
cell viability 90 %
Dental pulp stem cell viability in the composite remained above 90%.
DPSC viability remained >90%.
cell viability 90 %
Microbial transglutaminase crosslinking preserved coumarin integrity.
while mTG crosslinking preserved coumarin integrity
Microbial transglutaminase crosslinking preserved coumarin integrity.
while mTG crosslinking preserved coumarin integrity
Microbial transglutaminase crosslinking preserved coumarin integrity.
while mTG crosslinking preserved coumarin integrity
Microbial transglutaminase crosslinking preserved coumarin integrity.
while mTG crosslinking preserved coumarin integrity
Microbial transglutaminase crosslinking preserved coumarin integrity.
while mTG crosslinking preserved coumarin integrity
Microbial transglutaminase crosslinking preserved coumarin integrity.
while mTG crosslinking preserved coumarin integrity
Microbial transglutaminase crosslinking preserved coumarin integrity.
while mTG crosslinking preserved coumarin integrity
An enzymatically crosslinked marine collagen-alginate hydrogel blend enables visible-light-triggered on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity.
we designed an enzymatically crosslinked marine collagen-alginate hydrogel blend that enables visible-light-triggered, on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity
An enzymatically crosslinked marine collagen-alginate hydrogel blend enables visible-light-triggered on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity.
we designed an enzymatically crosslinked marine collagen-alginate hydrogel blend that enables visible-light-triggered, on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity
An enzymatically crosslinked marine collagen-alginate hydrogel blend enables visible-light-triggered on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity.
we designed an enzymatically crosslinked marine collagen-alginate hydrogel blend that enables visible-light-triggered, on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity
An enzymatically crosslinked marine collagen-alginate hydrogel blend enables visible-light-triggered on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity.
we designed an enzymatically crosslinked marine collagen-alginate hydrogel blend that enables visible-light-triggered, on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity
An enzymatically crosslinked marine collagen-alginate hydrogel blend enables visible-light-triggered on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity.
we designed an enzymatically crosslinked marine collagen-alginate hydrogel blend that enables visible-light-triggered, on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity
An enzymatically crosslinked marine collagen-alginate hydrogel blend enables visible-light-triggered on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity.
we designed an enzymatically crosslinked marine collagen-alginate hydrogel blend that enables visible-light-triggered, on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity
An enzymatically crosslinked marine collagen-alginate hydrogel blend enables visible-light-triggered on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity.
we designed an enzymatically crosslinked marine collagen-alginate hydrogel blend that enables visible-light-triggered, on-demand release of BMP-2 while promoting oxygen diffusion through leachable porosity
Light-pulsed composites increased osteogenic readouts relative to dark controls, including 2.4-fold higher ALP activity and 2.8-fold higher mineral deposition.
Light-pulsed composites exhibited 2.4-fold ALP activity and 2.8-fold higher mineral deposition versus dark controls (p < 0.01).
ALP activity fold change 2.4 foldmineral deposition fold change 2.8 foldp value 0.01
Light-pulsed composites increased osteogenic readouts relative to dark controls, including 2.4-fold higher ALP activity and 2.8-fold higher mineral deposition.
Light-pulsed composites exhibited 2.4-fold ALP activity and 2.8-fold higher mineral deposition versus dark controls (p < 0.01).
ALP activity fold change 2.4 foldmineral deposition fold change 2.8 foldp value 0.01
Light-pulsed composites increased osteogenic readouts relative to dark controls, including 2.4-fold higher ALP activity and 2.8-fold higher mineral deposition.
Light-pulsed composites exhibited 2.4-fold ALP activity and 2.8-fold higher mineral deposition versus dark controls (p < 0.01).
ALP activity fold change 2.4 foldmineral deposition fold change 2.8 foldp value 0.01
Light-pulsed composites increased osteogenic readouts relative to dark controls, including 2.4-fold higher ALP activity and 2.8-fold higher mineral deposition.
Light-pulsed composites exhibited 2.4-fold ALP activity and 2.8-fold higher mineral deposition versus dark controls (p < 0.01).
ALP activity fold change 2.4 foldmineral deposition fold change 2.8 foldp value 0.01
Light-pulsed composites increased osteogenic readouts relative to dark controls, including 2.4-fold higher ALP activity and 2.8-fold higher mineral deposition.
Light-pulsed composites exhibited 2.4-fold ALP activity and 2.8-fold higher mineral deposition versus dark controls (p < 0.01).
ALP activity fold change 2.4 foldmineral deposition fold change 2.8 foldp value 0.01
Light-pulsed composites increased osteogenic readouts relative to dark controls, including 2.4-fold higher ALP activity and 2.8-fold higher mineral deposition.
Light-pulsed composites exhibited 2.4-fold ALP activity and 2.8-fold higher mineral deposition versus dark controls (p < 0.01).
ALP activity fold change 2.4 foldmineral deposition fold change 2.8 foldp value 0.01
Light-pulsed composites increased osteogenic readouts relative to dark controls, including 2.4-fold higher ALP activity and 2.8-fold higher mineral deposition.
Light-pulsed composites exhibited 2.4-fold ALP activity and 2.8-fold higher mineral deposition versus dark controls (p < 0.01).
ALP activity fold change 2.4 foldmineral deposition fold change 2.8 foldp value 0.01
Alginate leaching generated interconnected microporosity with 20-60 micrometer pores and increased oxygen diffusion coefficient by 42% b1 9%.
Alginate leaching generated an interconnected microporosity (20-60 b5m pores) and increased oxygen diffusion coefficient by 42% b1 9%.
oxygen diffusion coefficient increase 42 %pore size 20-60 b5m
Alginate leaching generated interconnected microporosity with 20-60 micrometer pores and increased oxygen diffusion coefficient by 42% b1 9%.
Alginate leaching generated an interconnected microporosity (20-60 b5m pores) and increased oxygen diffusion coefficient by 42% b1 9%.
oxygen diffusion coefficient increase 42 %pore size 20-60 b5m
Alginate leaching generated interconnected microporosity with 20-60 micrometer pores and increased oxygen diffusion coefficient by 42% b1 9%.
Alginate leaching generated an interconnected microporosity (20-60 b5m pores) and increased oxygen diffusion coefficient by 42% b1 9%.
oxygen diffusion coefficient increase 42 %pore size 20-60 b5m
Alginate leaching generated interconnected microporosity with 20-60 micrometer pores and increased oxygen diffusion coefficient by 42% b1 9%.
Alginate leaching generated an interconnected microporosity (20-60 b5m pores) and increased oxygen diffusion coefficient by 42% b1 9%.
oxygen diffusion coefficient increase 42 %pore size 20-60 b5m
Alginate leaching generated interconnected microporosity with 20-60 micrometer pores and increased oxygen diffusion coefficient by 42% b1 9%.
Alginate leaching generated an interconnected microporosity (20-60 b5m pores) and increased oxygen diffusion coefficient by 42% b1 9%.
oxygen diffusion coefficient increase 42 %pore size 20-60 b5m
Alginate leaching generated interconnected microporosity with 20-60 micrometer pores and increased oxygen diffusion coefficient by 42% b1 9%.
Alginate leaching generated an interconnected microporosity (20-60 b5m pores) and increased oxygen diffusion coefficient by 42% b1 9%.
oxygen diffusion coefficient increase 42 %pore size 20-60 b5m
Alginate leaching generated interconnected microporosity with 20-60 micrometer pores and increased oxygen diffusion coefficient by 42% b1 9%.
Alginate leaching generated an interconnected microporosity (20-60 b5m pores) and increased oxygen diffusion coefficient by 42% b1 9%.
oxygen diffusion coefficient increase 42 %pore size 20-60 b5m
Blue-light stimulation induced stepwise BMP-2 release from the composite, with about 23% release per pulse and 60% cumulative release at 72 hours.
Blue-light stimulation induced stepwise BMP-2 release (23% per pulse; 60% cumulative at 72 h)
BMP-2 release per pulse 23 %cumulative BMP-2 release 60 %
Blue-light stimulation induced stepwise BMP-2 release from the composite, with about 23% release per pulse and 60% cumulative release at 72 hours.
Blue-light stimulation induced stepwise BMP-2 release (23% per pulse; 60% cumulative at 72 h)
BMP-2 release per pulse 23 %cumulative BMP-2 release 60 %
Blue-light stimulation induced stepwise BMP-2 release from the composite, with about 23% release per pulse and 60% cumulative release at 72 hours.
Blue-light stimulation induced stepwise BMP-2 release (23% per pulse; 60% cumulative at 72 h)
BMP-2 release per pulse 23 %cumulative BMP-2 release 60 %
Blue-light stimulation induced stepwise BMP-2 release from the composite, with about 23% release per pulse and 60% cumulative release at 72 hours.
Blue-light stimulation induced stepwise BMP-2 release (23% per pulse; 60% cumulative at 72 h)
BMP-2 release per pulse 23 %cumulative BMP-2 release 60 %
Blue-light stimulation induced stepwise BMP-2 release from the composite, with about 23% release per pulse and 60% cumulative release at 72 hours.
Blue-light stimulation induced stepwise BMP-2 release (23% per pulse; 60% cumulative at 72 h)
BMP-2 release per pulse 23 %cumulative BMP-2 release 60 %
Blue-light stimulation induced stepwise BMP-2 release from the composite, with about 23% release per pulse and 60% cumulative release at 72 hours.
Blue-light stimulation induced stepwise BMP-2 release (23% per pulse; 60% cumulative at 72 h)
BMP-2 release per pulse 23 %cumulative BMP-2 release 60 %
Blue-light stimulation induced stepwise BMP-2 release from the composite, with about 23% release per pulse and 60% cumulative release at 72 hours.
Blue-light stimulation induced stepwise BMP-2 release (23% per pulse; 60% cumulative at 72 h)
BMP-2 release per pulse 23 %cumulative BMP-2 release 60 %
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
The orthogonally crosslinked marine collagen-alginate composite supports visible-light-controlled BMP-2 delivery and oxygen-enhanced osteogenesis without photoinitiator toxicity.
Approval Evidence
1 source2 linked approval claimsfirst-pass slug bmp-2-pc
Recombinant BMP-2 was conjugated via a coumarin-based 405 nm-cleavable linker (BMP-2_pc) and covalently tethered to the collagen network.
Source:
compatibility resultsupports
Microbial transglutaminase crosslinking preserved coumarin integrity.
while mTG crosslinking preserved coumarin integrity
Source:
mechanistic resultsupports
Blue-light stimulation induced stepwise BMP-2 release from the composite, with about 23% release per pulse and 60% cumulative release at 72 hours.
Blue-light stimulation induced stepwise BMP-2 release (23% per pulse; 60% cumulative at 72 h)
Source:
Comparisons
Source-backed strengths
Microbial transglutaminase crosslinking was reported to preserve coumarin integrity, supporting compatibility between the photocleavable linker and enzymatic network formation. Blue-light stimulation produced stepwise BMP-2 release, with about 23% release per pulse and 60% cumulative release at 72 hours.
Compared with FnoCas12aKD2P
BMP-2_pc and FnoCas12aKD2P address a similar problem space.
Shared frame: same top-level item type; shared mechanisms: photocleavage
Compared with NP-cIPTG
BMP-2_pc and NP-cIPTG address a similar problem space.
Shared frame: same top-level item type; shared mechanisms: photocleavage
Relative tradeoffs: appears more independently replicated.
BMP-2_pc and randomly attached cage compounds on silencing oligonucleotides address a similar problem space.
Shared frame: same top-level item type; shared mechanisms: photocleavage
Strengths here: looks easier to implement in practice.
Ranked Citations
- 1.