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Gene & Protein in Disease                                             β-cell regeneration and stem cell niche



                                                               engineering and regeneration. In coculture settings, stem
                                                               cells exhibit the ability to support tissue homeostasis,
                                                               repair, metabolism, and growth, while also serving as
                                                               targets for differentiation into various cell types.  The
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                                                               development  of  complex  tissues  or  organs  hinges  on
                                                               their integration into coculture systems, employing both
                                                               direct and indirect coculture approaches to elucidate
                                                               cellular events in tissue engineering.  This review
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                                                               discusses the benefits of stem cell co-culture techniques
                                                               in tissue engineering and regenerative medicine, with a
                                                               particular focus on various tissues, including orthopedic
                                                               soft tissues, vasculature, bone, heart, lung, nerve, kidney,
                                                               and liver. Despite recent exciting discoveries, a decade
                                                               of experimental and clinical studies has shown that the
                                                               routine use of stem cells to repair solid organs is not
                                                               imminent amidst the promise of their medicinal uses in
                                                               cell-based tissue regeneration, drug testing, and basic
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                                                               research.  Biologists only partially comprehend the
                                                               mechanisms  governing  cell  differentiation,  with  only
            Figure 4. An organoid kidney was created using a human pluripotent stem   certain extrinsic and intrinsic components mapped,
            cell line. Immunofluorescence allows for the observation of differentiated   and less known about the intricate interactions of these
            nephrons. Reprinted with permission from Drawnel et al. 16  elements in various differentiation processes.  Current
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            Abbreviations: BNP: Brain natriuretic peptide; iPS: induced pluripotent   research focuses on discovering soluble ligands that
            stem cell.
                                                               regulate and modulate signaling pathways, despite
                                                               limited knowledge about the impact of the physical
            cellular metabolism within the graft.  Niche control is   and structural microenvironment (Figure  7). Offering
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            vital for processes that result in organogenesis and tissue   effective ways to examine organoids at the single-cell
            homeostasis. The application of engineering principles   level is a way to advance the genesis of organoids with
            has significantly improved the general success of stem   substantially improved accuracy.
            cell research. However, numerous significant challenges
            persist, including understanding the long-term impacts   The  emerging  techniques  in  organoid  engineering
            concerning systems biology (Figure  6). Understanding   represent a significant stride forward in our comprehension
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            biomimetics has substantially facilitated the development   of the stem cell niche.  Employing organoids to answer
            of designs for materials and devices, refining the   important  issues  about  developmental  and  regenerative
            architecture of matrices and scaffolds, and integrating   biology necessitates their integration into investigative
            compatible biological and physical constituents. 22  endeavors. These novel tools streamline the exploration
                                                               of fundamental ideas in stem cell biology, including
              Regenerative medicine encompasses developments   the influence of the stem cell niche on cellular plasticity
            in stem cell biology, molecular biology, engineering,   and  how  its  physical  characteristics  govern  stem  cell
            and clinical methodologies. Stem cells are crucial   self-organization,  subsequently  affecting  stem  cell  fate.
            for therapeutic use in regenerative medicine, with   Scaffolds designed for tissue engineering modify the
            engineering concepts driving stem cell-based applications   physical, chemical, and biological milieu surrounding
            aimed at improving human health. Various engineering   a cell population. Moreover, novel biological and
            methodologies are geared toward the development    chemical biology tools  facilitate  the  examination of
            of regenerative and preventative medicine to address   stem cell populations. The publication  Genomics and
            diverse illnesses and disorders. The rapid expansion of   Proteomics: Principles, Technologies, and Applications by
            stem cell research and its clinical applications calls for   Apple Academic Press discusses the use of genomes and
            novel engineering ideas and biomaterials.  The use of   proteomics  in  stem  cell  studies.   These  technologies
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            stem cells in regenerative medicine primarily relies on   furnish a precise diagnostic fingerprint of the cellular state.
            engineering concepts such as biomaterials, microfluidics,   High-throughput molecular profiling, primarily employing
            and nanotechnology.  Technological advancements    RNA sequencing (RNA-seq) and metabolomics, has led to
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            focus on creating functional niches for cells, with   the development of complex analytic algorithms, thereby
            stem cells emerging as promising candidates in tissue   enabling fundamental discoveries in stem cell biology


            Volume 3 Issue 2 (2024)                         6                               doi: 10.36922/gpd.2996
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