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International Journal of Bioprinting                            Bioprinted plasma biocarriers for MSC delivery





























































            Figure 4. Canonical pathways significantly activated by the secretome (Z-score > 2) of PRP- (A) and FFP-infused biocarriers (B). Abbreviations: FFP, fresh
            frozen plasma; PRP, platelet-rich plasma.

            3.4.1. Paracrine angiogenic activities of BMSCs under   any type of plasma compared to those encapsulated solely
            inflammatory conditions                            in GelMA (p < 0.001 for PRP biocarriers; p = 0.002 for FFP
                    ®
            Using IPA , we predicted and identified differences in   biocarriers).
            angiogenesis between  groups.  Table  2  presents  Z-scores
            for angiogenesis across all experimental conditions. A   3.4.2. Matrigel assays
            Kruskal–Wallis test, followed by Bonferroni adjustment,   To examine how inflammation, i.e., IL-1β exposure,
                                                               influenced angiogenesis, we performed Matrigel assays
            revealed no significant differences in angiogenesis Z-scores
            concerning platelet dose (p = 0.079).              to examine the impact of the secretome released from
                                                               PRP biocarriers on the angiogenic potential of HUVECs
               However, significant differences were noted in the   after  exposure  to  conditioned  media  collected under
            angiogenic behavior of cells within scaffolds infused with   inflammatory conditions (IL-1β, 50 ng/mL).

            Volume 10 Issue 6 (2024)                       307                                doi: 10.36922/ijb.4426
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