The importance of three-dimensional (3D) models in pharmacological tests and personalized therapies is significant. These models allow us to gain insight into the cell response during drug absorption, distribution, metabolism, and elimination in an organ-like system and are suitable for toxicological testing. In personalized and regenerative medicine, the precise characterization of artificial tissues or drug metabolism processes is more than crucial to gain the safest and the most effective treatment for the patients. Using these 3D cell cultures derived directly from patient, such as spheroids, organoids, and bioprinted structures, allows for testing drugs before administration to the patient. These methods allow us to select the most appropriate drug for the patient. Moreover, they provide chance for better recovery of patients, since time is not wasted during therapy switching. These models could be used in applied and basic research as well, because their response to treatments is quite similar to that of the native tissue. Furthermore, they may replace animal models in the future because these methods are cheaper and can avoid interspecies differences. This review puts a spotlight on this dynamically evolving area and its application in toxicological testing.

Összefoglaló. A bőrpótlóknak mind a klinikumban, mind a gyógyszerkutatásokban kiemelt szerepük van. Ezek a kezdetleges mesterséges bőrszövetek segíthetik a bőr regenerálódását, modellezhetik a főbb funkciókat, de megvannak a korlátaik is, mechanikailag sérülékenyek, és nem tartósak. A legtöbb bőrpótló vagy acelluláris, vagy csak egy-két sejttípust tartalmaz. Az eredeti bőrrel megegyező szerkezetű, teljesen funkcionális mesterséges bőrszövet a mai napig nem létezik. A háromdimenziós szövetnyomtatás megoldást kínálhat erre a problémára is, hiszen a bőrszövet minden sejtes eleme felhasználható, megfelelő hidrogélek és biotinták segítségével pedig olyan komplex struktúrák hozhatók létre, amelyek képesek a bőr teljes funkcionális repertoárját biztosítani. Ez nemcsak klinikai szempontból kiemelt jelentőségű, hanem a preklinikai kísérletek esetében kiválthatja az állatmodelleket és számos toxikológiai vizsgálatot is. Orv Hetil. 2022; 163(10): 375–385. Summary. Skin substitutes have a prominent role in therapeutic applications and drug research. These simple artificial skin tissues can support skin regeneration, in vitro they can model the main functions of the skin but they also have limitations such as being mechanically vulnerable and not durable enough. Most skin substitutes are either acellular or contain only one or two cell types. Fully functional artificial skin substitute with the same structure as the original skin has not been produced to this day. Three-dimensional tissue bioprinting can also offer a solution to this problem, as all cellular elements of skin tissue can be used, and with the help of appropriate hydrogels and bioinks, complex structures can be created that can provide a complete functional repertoire of the skin. It is important not just in the clinical therapeutic use, but it can also trigger the replacement of animal models and a number of toxicological studies in preclinical trials. Orv Hetil. 2022; 163(10): 375–385.

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