Researchers use 3D bioprinting to create eyetissue naturemethods
reached full maturity on day 42. Tissue analyses and genetic and functional testing showed that the printed tissue looked and behaved similarly to native outer blood-retina barrier. Under induced stress, printed tissue exhibited patterns of early AMD such as drusen deposits underneath the RPE and progression to late dry stage AMD, where tissue degradation was observed. Low oxygen induced wet AMD-like appearance, with hyperproliferation of choroidal vessels that migrated into the sub-RPE zone.
Co-author Marc Ferrer, Ph.D., director of the 3D Tissue Bioprinting Laboratory at NIH's National Center for Advancing Translational Sciences, and his team provided expertise for the biofabrication of the outer blood-retina barrier tissues"in-a-well," along with analytical measurements to enable drug screening.
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