El chip de varios órganos - Una plataforma de microfluidos para el largo plazo co-cultivo de múltiples tejidos
April 28th, 2015
32.2K views
Aquí, presentamos un protocolo para cocultivar células primarias, modelos de tejido y biopsias en un chip microfluídico multi-órgano durante un máximo de 28 días. Las células endoteliales microvasculares dérmicas humanas, los agregados hepáticos y las biopsias de piel se combinaron con éxito en una circulación de medios común.
Visión general
Este artículo presenta un protocolo para el cocultivo de células primarias, modelos de tejido y biopsias de punción utilizando un chip multi-orgánico microfluídico durante un máximo de 28 días. Se detalla la combinación exitosa de células endoteliales microvasculares dérmicas humanas, agregados hepáticos y biopsias de piel en una circulación de medios común.
Componentes clave del estudio
Área de la ciencia
- Neurociencia
- Biología celular
- Microfluidos
Fundamentos
- Los sistemas microfluídicos permiten la integración de múltiples sistemas de órganos.
- Las técnicas de cocultivo pueden mejorar el estudio de las interacciones celulares.
- Mantener la viabilidad y funcionalidad celular durante períodos prolongados es crucial.
- Este estudio explora el potencial de un chip multi-orgánico para el cultivo a largo plazo.
Propósito del estudio
- Desarrollar un protocolo confiable para el cocultivo de diferentes tipos de células.
- Investigar las interacciones entre células endoteliales y modelos de tejido.
- Evaluar la viabilidad de las células en un entorno microfluídico a lo largo del tiempo.
Métodos utilizados
- Diseño y fabricación de chips microfluídicos.
- Aislamiento de células endoteliales microvasculares dérmicas humanas primarias.
- Preparación de agregados hepáticos y biopsias de piel.
- Establecimiento de circulación de medios común para el cocultivo.
Resultados principales
- Cocultivo exitoso de células endoteliales, agregados hepáticos y biopsias de piel.
- Las células mantuvieron su viabilidad durante hasta 28 días.
- Observaciones de interacciones celulares en el entorno microfluídico.
- Aplicaciones potenciales en pruebas de medicamentos y modelado de enfermedades.
Conclusiones
- El chip multi-orgánico microfluídico es efectivo para el cocultivo a largo plazo.
- Este enfoque puede facilitar el estudio de interacciones celulares complejas.
- Las investigaciones futuras pueden expandir las aplicaciones de esta tecnología.
Preguntas frecuentes
¿Qué es un chip multi-orgánico microfluídico?
Un chip multi-orgánico microfluídico es un dispositivo que permite el cultivo simultáneo de múltiples tipos de células en un entorno controlado.
¿Cuánto tiempo se pueden cultivar las células en este sistema?
Las células se pueden cultivar hasta por 28 días en el chip multi-orgánico microfluídico.
¿Qué tipos de células se utilizaron en este estudio?
El estudio utilizó células endoteliales microvasculares dérmicas humanas, agregados hepáticos y biopsias de piel.
¿Cuáles son las aplicaciones potenciales de esta investigación?
Las aplicaciones potenciales incluyen pruebas de medicamentos y modelado de enfermedades en un entorno controlado.
¿Cuáles son los beneficios de usar técnicas de cocultivo?
Las técnicas de cocultivo pueden mejorar la comprensión de las interacciones celulares y mejorar la relevancia de los modelos in vitro.
¿Cómo funciona la circulación de medios en el chip?
La circulación de medios permite el intercambio de nutrientes y productos de desecho, apoyando la viabilidad y función celular.
Executive Industry Relevance
Long-term multi-tissue coculture in a microfluidic platform addresses the critical need for predictive preclinical models that better capture organ-organ interactions and chronic substance exposure effects. By enabling stable, near-physiologic fluid flow and repeated dosing over 28 days, the system supports mechanistic de-risking in early discovery and improves translational confidence for hepatotoxicity and dermal safety assessment. This positions the technology as a reusable capability for lead identification and predictive modeling in pharmaceutical R&D pipelines.
Strategic Applications in Biopharma R&D
Early Discovery & Target Validation
- Scientific Value: Enables interrogation of cross-tissue signaling pathways and mechanistic de-risking of compound-induced organ interactions.
- Operational Value: Supports functional validation of targets in a multicellular microenvironment that reflects physiological complexity.
Screening & Assay Development
- Scientific Value: Provides a standardized, reproducible platform for quantitative assessment of substance effects across interconnected tissue models.
- Operational Value: Enables scalable, long-term coculture with media perfusion for repeated compound exposure and readout collection.
Translational & Preclinical Research
- Scientific Value: Enhances disease relevance by modeling human liver-skin-vascular interactions in a controlled, perfused system.
- Operational Value: Supports continuity from discovery through preclinical evaluation by maintaining tissue functionality over extended culture periods.
Pipeline & Workflow Integration
The microfluidic multi-organ chip integrates into early discovery workflows by enabling hypothesis testing of organ-specific toxicities and pathway modulation in a human-relevant coculture system.
- Discovery Biology: Facilitates hypothesis testing of inter-organ communication and compound effects on tissue-specific functions.
- Screening: Delivers assay readiness through stable, perfused coculture conditions suitable for compound library screening.
- Analytics: Generates quantitative, time-resolved readouts from multiple tissue compartments to support comparative condition analysis.
- Translational Research: Promotes preclinical continuity by preserving organotypic architecture and function over 28-day culture periods.
- Enterprise Reuse: Offers a reusable perfusion platform adaptable to multiple tissue combinations and compound testing campaigns.
Operational & Enterprise Impact
- Scientific Value: Improves predictive confidence by reducing mechanistic ambiguity in organ-organ crosstalk and substance response.
- Operational Value: Ensures standardization, reproducibility, and scalability of long-term multicellular coculture under controlled flow.
- Strategic Value: Informs better go/no-go decisions by identifying organ-specific liabilities earlier, reducing late-stage attrition risk.
- Portfolio Impact: Enables risk-adjusted prioritization of candidates based on multi-tissue tolerance and functional readouts.
Implementation Considerations
- Requires expertise in microfluidic system operation, primary cell handling, and tissue model preparation.
- Depends on perfusion-compatible instrumentation, sterile fluid handling, and real-time monitoring infrastructure.
- Necessitates cross-team standardization of media formulations, flow rates, and sampling protocols for reproducible results.
- Involves adaptation considerations when integrating diverse primary tissues or biopsies with varying culture requirements.
- Limited by the need for specialized fabrication and validation of chip designs to maintain physiologic shear stress and volume ratios.
Biopharma FAQs
Why is long-term culture important for target validation studies?
Long-term culture enables repeated substance exposure and observation of delayed or cumulative toxic effects, which are critical for validating targets in chronic disease models. The system supports coculture viability for up to 28 days, allowing assessment of sustained target engagement and organ-specific responses over time. This duration improves predictive confidence by mimicking human dosing regimens and revealing late-onset organ interactions not captured in short-term assays.
How does independent variable isolation improve discovery pipeline efficiency?
The microfluidic design allows precise control of fluid flow, media composition, and tissue positioning, enabling isolation of variables such as shear stress or compound concentration. This control reduces confounding factors in coculture experiments, improving data reliability for target validation and lead optimization. By standardizing these parameters, teams can compare conditions across experiments with greater reproducibility and fewer false positives.
What quantitative measurements does the system enable for dependent variables?
The platform supports quantitative readouts such as metabolite secretion, enzyme activity, barrier integrity, and viability markers from each tissue compartment. These measurements allow dose-response modeling and kinetic analysis of substance effects across interconnected tissues. Time-resolved sampling via the perfusion system enables longitudinal tracking of functional changes, supporting mechanistic insight and safety margin estimation.
Why are replication requirements essential for cross-functional collaboration?
Replication ensures that observed tissue responses are consistent and not due to stochastic variability in cell seeding or chip preparation. Standardized protocols for liver aggregate formation, skin biopsy placement, and endothelial seeding allow toxicology, DMPK, and biology teams to generate comparable data. This consistency supports joint interpretation of results and alignment on go/no-go criteria in multidisciplinary project teams.
What statistical analysis capabilities are needed before implementing this system?
Implementation requires the ability to perform longitudinal data analysis, including repeated measures ANOVA or mixed-effects models, to account for temporal correlations in perfusion-based readouts. Teams must also apply correction for multiple comparisons when assessing multiple tissue endpoints or time points. These capabilities ensure that observed differences are statistically robust and not driven by noise, supporting confident decision-making in preclinical evaluation.
