Organ-on-a-chip device for mimicking the bone marrow microenvironment, and methods for producing the device moulds, for producing the device, for filling the device, and for using the device

The Organ-on-a-chip device addresses the limitations of previous models by integrating distinct bone marrow niches with a horizontal structure, oxygen gradient, and physiological fluid flow, enhancing the accuracy of in vitro studies and therapeutic applications.

WO2026107567A1PCT designated stage Publication Date: 2026-05-28FUNDACAO OSWALDO CRUZ (FIOCRUZ)
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
FUNDACAO OSWALDO CRUZ (FIOCRUZ)
Filing Date
2025-11-19
Publication Date
2026-05-28

AI Technical Summary

Technical Problem

Existing Organ-on-a-chip devices fail to accurately mimic the bone marrow microenvironment, specifically the endosteal, central, and perivascular niches, due to inadequate representation of structural characteristics, oxygen gradients, fluid flow, and shear stresses, leading to discrepancies between in vitro and in vivo cellular behavior.

Method used

A device with distinct culture chambers for each niche, featuring a horizontal structure for continuity, oxygen gradient, and physiological fluid flow, simulating the bone marrow's mechanical properties and topography, allowing for cell migration and substance exchange.

Benefits of technology

The device provides a biomimetic environment that accurately represents bone marrow niches, enabling studies of healthy and pathological conditions, and supports therapeutic protocol development for bone marrow-related diseases.

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Abstract

The present invention relates to an organ-on-a-chip device for mimicking the bone marrow microenvironment (1) comprising: a perivascular region (2) representing the perivascular niche; a central region (3) representing the central niche; an endosteal region (4) representing the endosteal niche; at least one fluid inlet channel (5); at least one channel for injecting cells, fluids and hydrogels (6) for each region (2, 3, 4); at least one containment port (7) to allow independent filling of the at least one channel for injecting cells, fluids and hydrogels (6); and at least one fluid outlet channel (8). The present invention also relates to a method for producing the device moulds using additive manufacturing, a method for producing the device from PDMS using soft lithography, a method for filling the device with hydrogel and performing three-dimensional culture, and use of the device.
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