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Gene & Protein in Disease                                              Stem cell-based antimicrobial therapy



            influenced by the conditions and protocols employed   The implementation of safety testing is imperative for
            for their expansion. Variations in culture media, growth   reducing the likelihood of unfavorable occurrences linked
            factors, and cell density may lead to variations in the   to stem cell therapy. Similarly, efficacy testing is essential
            proliferation and differentiation potential of stem cells.   to assess the potency of stem cell-derived antimicrobial
            The transportation of stem cells to the location of infection   interventions. The assessment of safety for antimicrobial
            is a crucial factor to be taken into account in stem cell-  therapies that utilize stem cells entails the examination
            oriented treatments for combating microbial infections.   of potential hazards arising from the transplantation of
            The selection of the mode of administration may impact   stem cells . The aforementioned hazards encompass the
                                                                       [61]
            the feasibility and efficacy of stem cells. An instance of stem   possibility of immunological rejection, neoplastic growth,
            cell accumulation in the lungs can be observed following   and dissemination of pathogenic microorganisms.
            intravenous injection, whereas stem cell retention at the
            injection site can be observed following direct injection .   Autologous transplantation, which utilizes the patient’s
                                                        [52]
            The implementation of standardized protocols for the   own tissues, or allogeneic transplantation, which involves
            isolation, expansion, and delivery of stem cells can   obtaining stem cells from a donor with a matching genetic
            promote uniformity in stem cell quality and effectiveness   profile, may  be utilized to reduce  the risk  of immune
            across diverse laboratory and clinical environments. The   rejection. In addition, it is possible to manipulate stem
            facilitation of the development and testing of stem cell-  cells  to  express  immunosuppressive  agents,  thereby
            based therapies for antimicrobial treatment can enhance   reducing the likelihood of immune rejection. To reduce
            the translational potential of stem cell research into clinical   the probability of tumorigenesis, it is essential to screen
            practice. Furthermore, the implementation of uniform   stem cells for mutations or chromosomal aberrations that
                                                                                                      [62]
            procedures can contribute to safeguarding the well-being   may increase the likelihood of tumorigenesis . Stem
            of patients undergoing stem cell treatments, through the   cells can also be manipulated to express tumor suppressor
            reduction of potential harmful incidents and the assurance   genes or other components that lessen the likelihood of
            of consistent clinical results.                    tumor development. Screening stem cells for potential
                                                               infectious agents and cultivating and storing them in a
              Table 2 provides a clear overview of the challenges   sterile environment are necessary to lower the risk of
            associated with achieving consistent AMP production   infectious agent transmission. Analyzing stem cell-based
            by MSCs, highlighting the complexities and factors that   antimicrobial therapies’ capacity to control infections and
            researchers need to address for the successful implementation   encourage tissue regeneration is necessary to evaluate their
            of this therapeutic approach. Preclinical investigations   effectiveness . To complete this endeavor, preclinical
                                                                         [63]
            have demonstrated the potential of antimicrobial therapies   animal models and clinical trials on humans can be utilized.
            based  on  stem  cells .  However,  the  implementation  of
                            [60]
            these therapies in clinical settings necessitates meticulous   The efficacy of stem cell-based antimicrobial therapies
            examination to  ascertain  their  safety  and effectiveness.   in controlling infections, reducing inflammation, and

            Table 2. Discussion of challenges in consistent antimicrobial peptides production by mesenchymal stem cells

            Challenges in consistent AMP   Description and explanation                         References
            production by MSCs
            Complexities in genetic engineering   Genetic modification of MSCs to produce synthetic AMPs requires   Herrmann
                                         sophisticated techniques to ensure reliable and efficient production  et al., 2021 [53]
            Variability in MSC responses  MSCs derived from different sources or individuals might exhibit varying   Dunn et al., 2021 [54]
                                         production capabilities, affecting treatment consistency
            Regulation of AMP expression  Achieving precise control over the levels and timing of synthetic AMP   Zhang et al., 2022 [55]
                                         expression by MSCs is challenging, influencing treatment efficacy.
            Long-term stability of AMP production  Ensuring sustained AMP production over extended periods without   Teixeira et al., 2020 [56]
                                         diminishing efficacy remains a technical hurdle
            Immune response to engineered MSCs  The introduction of genetically modified cells could trigger an immune   Gao et al., 2022 [57]
                                         response, potentially impacting treatment safety and effectiveness
            Optimization of synthetic AMP design  Designing synthetic AMPs that are both effective against a range of pathogens   Chen et al., 2022 [58]
                                         and compatible with MSC production processes is an intricate process
            Microenvironment influence   The local microenvironment at the infection site can impact MSC behavior   Zhang et al., 2022 [59]
                                         and AMP production, affecting treatment consistency
            Abbreviations: AMP: Antimicrobial peptide; MSC: Mesenchymal stem cells.


            Volume 2 Issue 4 (2023)                         7                        https://doi.org/10.36922/gpd.1230
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