4.5 Article

Optimization of decellularized human placental macroporous scaffolds for spermatogonial stem cells homing

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SPRINGER
DOI: 10.1007/s10856-021-06517-7

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  1. Iran National Science Foundation (INSF) [98022911]
  2. Iran University of Medical Sciences (IUMS) [1397-01-30-33110]

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The decellularized scaffold with 0.5%/30 SDS/Triton was found to have minimal negative effects on ECM, making it an excellent platform for tissue engineering applications. Different concentrations and incubation times had varying effects on swelling ratios and cell viability. The colony formation of spermatogonial stem cells was clearly observed within the scaffold.
Decellularized scaffolds have been found to be excellent platforms for tissue engineering applications. The attempts are still being made to optimize a decellularization protocol with successful removal of the cells with minimal damages to extracellular matrix components. We examined twelve decellularization procedures using different concentrations of Sodium dodecyl sulfate and Triton X-100 (alone or in combination), and incubation time points of 15 or 30 min. Then, the potential of the decellularized scaffold as a three-dimensional substrate for colony formation capacity of mouse spermatogonial stem cells was determined. The morphological, degradation, biocompatibility, and swelling properties of the samples were fully characterized. The 0.5%/30 SDS/Triton showed optimal decellularization with minimal negative effects on ECM (P <= 0.05). The swelling ratios increased with the increase of SDS and Triton concentration and incubation time. Only 0.5%/15 and 30 SDS showed a significant decrease in the SSCs viability compared with other groups (P < 0.05). The SSCs colony formation was clearly observed under SEM and H&E stained slides. The cells infiltrated into the subcutaneously implanted scaffold at days 7 and 30 post-implantation with no sign of graft rejection. Our data suggest the %0.5/30 SDS/Triton as an excellent platform for tissue engineering and reproductive biology applications. [GRAPHICS] .

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