Organ on chip device

Organ-on-a-chip device miniaturizes human organs on microchips for drug testing and physiological studies, reducing animal testing.

About this subject

Organ-on-a-chip technology replicates the microarchitecture and functions of human organs on microfluidic devices. Micrometer-sized channels house living cells in an environment that mimics blood flow and mechanical forces of the body. This platform allows real-time observation of physiological responses, such as heart cell contractions or liver metabolism.

Its main application lies in the pharmaceutical industry: testing drug efficacy and toxicity in preclinical phases. Unlike animal models, the chip uses human cells, providing greater accuracy in predicting human reactions. It is also a tool for personalized medicine by testing drugs on cells from specific patients.

In Brazil, research advances at institutions like USP and Fiocruz, focusing on lung models for respiratory diseases and kidney chips for nephrotoxicity assessment. Projects aim to integrate multiple organs on a single chip, simulating systemic interactions.

Historically, the concept emerged in the early 2000s with the work of Donald Ingber at the Wyss Institute. Since then, chips for lung, liver, and intestine have been validated. Companies like Emulate and Mimetas commercialize versions for laboratories, accelerating the replacement of animal testing.

Frequently Asked Questions

What is an organ-on-a-chip?

It is a microfluidic device containing live human cells in channels that mimic the structure and functions of an organ, allowing physiological studies and drug testing.

What are its advantages over animal testing?

It uses human cells, providing more accurate predictions of human responses. It reduces costs, research time, and the use of animals in experiments.

How are these devices fabricated?

Typically by soft lithography using PDMS (polydimethylsiloxane) to create microfluidic channels. Cells are cultured in the channels and stimulated mechanically or chemically.