Injection of Porcine Adipose Tissue-Derived Stroma Cells via Waterjet Technology
November 23rd, 2021
1.6K views
We present a method of cell injection via needle free waterjet technology coupled with a sequela of post-delivery investigations in terms of cellular viability, proliferation, and elasticity measurements.
Overview
This article presents a method for cell injection using needle-free waterjet technology. The technique allows for precise delivery of active components, including living cells, into targeted tissues.
Key Study Components
Area of Science
- Neuroscience
- Cell Therapy
- Minimally Invasive Techniques
Background
- Waterjet injections provide a more precise alternative to traditional needle injections.
- The method is applicable in various tissues and is particularly focused on urinary incontinence.
- It has potential applications in regenerating infected muscle tissue after heart attacks.
- The technique is currently limited to experienced researchers and licensed physicians.
Purpose of Study
- To explore the efficacy of waterjet technology for cell therapy.
- To assess cellular viability, proliferation, and elasticity post-injection.
- To develop a minimally invasive method for targeted drug delivery.
Methods Used
- Needle-free waterjet technology for cell injection.
- Preselection of injection pressures for precise localization.
- Post-delivery investigations on cellular outcomes.
- Application in pre-clinical studies.
Main Results
- Demonstrated improved precision in delivering cells compared to traditional methods.
- Showed promising results in cellular viability and proliferation.
- Measured elasticity of cells post-injection.
- Highlighted the need for skilled application in clinical settings.
Conclusions
- Waterjet technology offers a viable alternative for cell injections.
- Further research is needed to optimize the technique for clinical use.
- Potential to significantly impact cell therapy and regenerative medicine.
Frequently Asked Questions
What is waterjet technology?
Waterjet technology uses high-pressure water to deliver substances precisely into targeted tissues without needles.
What are the applications of this technique?
It is primarily focused on cell therapy for urinary incontinence and muscle tissue regeneration.
Who can apply this technique?
Currently, it can only be applied by experienced researchers or licensed physicians in pre-clinical studies.
What are the benefits of using waterjet injections?
Waterjet injections allow for more precise localization and are minimally invasive compared to traditional needle injections.
What outcomes were measured in the study?
The study measured cellular viability, proliferation, and elasticity after injection.
Is this technique ready for routine laboratory use?
No, it is not intended for routine laboratory procedures as it is still under development for clinical purposes.
Executive Industry Relevance
Needle-free waterjet technology enables precise, minimally invasive delivery of stromal cells to urethral tissue, addressing a key challenge in regenerative cell therapy for urinary incontinence. By improving targeting accuracy and reducing procedural variability, this approach supports predictive confidence in preclinical efficacy assessments. The method positions as a translational tool for de-risking cell-based interventions before clinical translation.
Strategic Applications in Biopharma R&D
Early Discovery & Target Validation
- Scientific Value: Enables interrogation of stromal cell engraftment and functional integration in urethral sphincter tissue.
- Operational Value: Provides reproducible cell delivery via pressure-controlled waterjet, reducing variability from manual needle techniques.
Screening & Assay Development
- Scientific Value: Generates quantifiable viability and elasticity readouts via trypan blue exclusion and AFM, supporting assay standardization.
- Operational Value: Facilitates high-consistency cell recovery from tissue or media for downstream functional screening.
Translational & Preclinical Research
- Scientific Value: Supports mechanistic de-risking by linking cell delivery to biomechanical outcomes in disease-relevant urethral tissue.
- Operational Value: Enables continuity from discovery to preclinical validation using porcine models aligned with human anatomy.
Pipeline & Workflow Integration
The waterjet delivery method integrates into the discovery workflow by enabling precise cell deposition for hypothesis testing in urethral regeneration models.
- Discovery Biology: Supports functional validation of stromal cells in urethral sphincter repair models through controlled cell dosing.
- Screening: Enables standardized preparation of cell suspensions for consistent viability and yield measurements post-injection.
- Analytics: Generates elasticity and viability metrics that allow comparative analysis across delivery methods and conditions.
- Translational Research: Uses cadaveric porcine urethra as a disease-relevant system to bridge ex vivo findings to preclinical studies.
- Enterprise Reuse: Positions the waterjet device as a reusable platform for targeted cell delivery across endoscopic-accessible tissues.
Operational & Enterprise Impact
- Scientific Value: Reduces mechanistic ambiguity in cell-tissue interactions by enabling precise, image-guided stromal cell placement.
- Operational Value: Improves reproducibility through pressure-regulated delivery and automated low-pressure cell injection phase.
- Strategic Value: Enhances go/no-go decisions by providing quantitative biomechanical and viability endpoints early in development.
- Portfolio Impact: Supports risk-adjusted prioritization of cell therapy candidates based on delivery fidelity and post-injection functionality.
Implementation Considerations
- Requires expertise in endoscopic-guided tissue handling and waterjet device operation.
- Dependent on access to AFM and fluorescence microscopy for post-injection viability and elasticity assessment.
- Necessitates standardization of cell suspension preparation and staining protocols across laboratories.
- Involves adaptation considerations when transferring protocols from cadaveric to live or diseased tissue models.
- Limited to preclinical and ex vivo applications due to current device constraints and need for skilled operation.
Biopharma FAQs
Why does viability measurement matter for stromal cell delivery via waterjet?
Viability assessment using trypan blue exclusion determines the proportion of live stromal cells after waterjet injection, which is critical for evaluating delivery efficiency and functional potential in urethral tissue engineering.
How does elastic modulus measurement inform stromal cell functionality post-injection?
Atomic force microscopy measures cellular elastic modulus to assess biomechanical changes in stromal cells after delivery, with significant reductions indicating altered mechanobiology that may affect engraftment and tissue integration.
What role does cell yield play in evaluating waterjet delivery efficiency?
Cell yield quantification via hemocytometer counting determines the number of recoverable stromal cells post-injection, enabling assessment of delivery losses and procedural efficiency in tissue or media environments.
Why are replication requirements important for validating waterjet-mediated cell delivery?
Replication across multiple cells and conditions ensures statistical robustness of viability and elasticity measurements, supporting reliable comparisons between waterjet and needle-based delivery methods in preclinical studies.
What statistical analysis is needed to compare delivery methods before implementation?
Comparative statistical analysis of viability and elastic modulus data between waterjet and Williams needle injections is required to determine significant differences and inform method selection for stromal cell delivery in urethral regeneration models.
Chapters in this video
0:04
Introduction
1:13
Preparation of Urethral Tissue Samples for Injections
1:49
Injections of Cells via a Williams Needle in Fluids and Tissue Samples
3:22
Injections of Cells via Waterjet in Fluids and Tissue Samples
4:29
Biomechanical Assessment of Cellular Elasticity by Atomic Force Microscopy (AFM)
5:24
Results: Post-Delivery Investigations
6:12
Conclusion
