Scientists initiate first ethical guidelines for organs cultivated in vitro

Organ models, which are cultivated in the laboratory from human stem cells and grow into living tissue, are one of the most important scientific breakthroughs of recent years. Scientists, patients and the wider public have high hopes for this emerging field of research, as so-called "organoids" have a huge potential in terms of research and modern medicine. In-vitro organ models allow complex organ development studies and pathogenetic analyses to be carried out directly in human tissue. New substances and therapies can be tested on human material much more quickly using this technology. Regenerative medical practice could conceivably cultivate the required tissue in the laboratory from the cells of a patient and, lessen dependency on organ donations. The use of organoids could also significantly reduce the need for animal experiments, although biologists believe these cannot be completely eliminated in the foreseeable future.

Organoids -- high hopes and bioethical dilemmas

From an ethical perspective, this new technology raises a whole range of issues. These include important caveats in relation to the use of human embryonic stem cells or the application of gene therapies to prevent or treat diseases. Jürgen Knoblich believes that "the development of organoids is unexplored scientific territory. As a researcher, I am fascinated by the huge potential of this technology. However, I also believe it's my job to actively promote dialogue around responsible research and to engage the wider public in the discussion." In 2013, the stem cell specialist made scientific headlines worldwide with his laboratory-cultivated brain models. In the latest policy statement issued in collaboration with the immunologist and geneticist Hans Clevers and the bioethicist and Member of the Dutch Parliament, Annelien Bredenoord, the researchers also examined for the first time the most important ethical dimensions of organoid research. According to Knoblich, "we hope that our work has created a solid foundation for the establishment of framework conditions for responsible engagement with this new technology."

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