Journal
APPLIED SCIENCES-BASEL
Volume 13, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/app13105862
Keywords
airway epithelium; airway epithelial regeneration; conditioned medium; secretome; tissue engineering; regenerative medicine; preclinical study; mesenchymal stem cell
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In recent years, exploring respiratory therapy guided by cell-secreted substances in vitro has become popular. This review evaluated the efficacy of using conditioned medium (CM) collected in an in vitro respiratory epithelial model. The results showed that differentiated cells from respiratory and non-respiratory systems, such as mesenchymal stem cells (MSC), could improve proliferation, migration, attachment, and protect the respiratory epithelium against cytotoxicity. CM might be a potential regenerative therapy in respiratory illnesses, but further research is needed to justify its use in clinical practice.
Background: The idea of exploring respiratory therapy in vitro predominantly guided by cell-secreted substances has gained ground in recent years. A conditioned medium (CM) consists of protein milieu that contains a diverse spectrum of cytokines, chemokines, angiogenic agents, and growth factors. This review evaluated the efficacy of using CM collected in an in vitro respiratory epithelial model. Methods: Twenty-six papers were included in this review: twenty-one cellular response studies on respiratory secretome application and five studies involving animal research. Results: The CM produced by differentiated cells from respiratory and non-respiratory systems, such as mesenchymal stem cells (MSC), exhibited the similar overall effect of improving proliferation and regeneration. Not only could differentiated cells from respiratory tissues increase proliferation, migration, and attachment, but the CM was also able to protect the respiratory epithelium against cytotoxicity. Most non-respiratory tissue CM was used as a treatment model to determine the effects of the therapy, while only one study used particle-based CM and reported decreased epithelial cell tight junctions, which harmed the epithelial barrier. Conclusion: As it resolves the challenges related to cell development and wound healing while simultaneously generally reducing the danger of immunological compatibility and tumorigenicity, CM might be a potential regenerative therapy in numerous respiratory illnesses. However, additional research is required to justify using CM in respiratory epithelium clinical practice.
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