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Global Translational Medicine                                               Stem cells in aortic aneurysm




            Table 2. (Continued)
            Cell type  Delivery  Injection time  Number of  AA model  Total time  Efficiency          References
                                           cells
                                                                          microRNA-147 during the initiation and
                                                                          development of AAA
            BM-MSC   IV injection  Week 0,1,2,3  1×10 /every  Ang II-infusion   4 weeks  Multiple intravenous administrations   [106]
                                              6
                                           time     mice AA model         of BM-MSCs were effective to inhibit
                                                                          the inflammatory reactions in Ang
                                                                          II-induced AA in apoE  mice
                                                                                         -/-
            MSCs-CM IV injection  Day 0,3,6,9,12  /  Ang II-induced   14 days  MSCs-CM regulates the polarization   [60]
                                                    mice model            of M1/M2 macrophages to effectively
                                                                          alleviate Ang II‐induced AA growth
            BM-MSC   IV injection  Day 0   1×10 6   Ang II-infusion   2 weeks  BM-MSCs regress AA via regulation of   [107]
                                                    mouse model           the NF-κB, Smad3 and Akt signaling
                                                                          pathways
            BM-MSC   Catheter  14 days after   /    The xenograft AAA  7 days  Cell therapy reconstructs the mechanical   [108]
                               xenograft            rat model             properties of the damaged abdominal
                               implantation                               aorta by improving tissue stiffness,
                                                                          stabilizes the geometry of AAA and
                                                                          reduces pressure changes in the artery
                                                                          wall
            ADSC-exos IV injection  Every 3 days  100 μg/every  Ang II-infusion   28 days  MiR-17-5p-rich ADSC-exos constraining   [68]
                                           time     mouse AAA model       AAA progression and inflammatory
                                                                          cytokines release, via the TXNIP-NLRP3
                                                                          signaling pathway
            Human    Tail vein   Day 1     A total of   Elastase-inducing   14 days  MSCs significantly reduce AAA   [61]
            Placental   injection          1×10 6   mice AAA model        formation by immunomodulating
            MSC                                                           IL-17-mediated inflammatory processes
            AA: Aortic aneurysm; TAA: Thoracic aortic aneurysms; AAA: Abdominal aortic aneurysm; MSC: Mesenchymal stem cell; BM-MSC: Bone
            marrow-derived MSC; UC-MSCs: Umbilical cord mesenchymal stem cells; ADSC: Adipose tissue-derived stromal cells; Muse
            cells: Multilineage-differentiating stress-enduring cells; EV: Extracellular vesicles; MSCs-CM: MSC–derived conditioned medium;
            ADSC-exos: ADSC-derived exosomes; IV: Intravenous; Ang Ⅱ: Angiotensin II; HMGB1: High mobility group box 1; VSMC: Vascular smooth muscle
            cells; EC: Endothelial cells; MMP: Matrix metalloproteinase; TNF-α: Tumor necrosis factor-α; ASC: Adipose tissue-derived stromal cells; RCP: A
            recombinant collagen-based patch; IGF-1: Insulin-like growth factor-1; TIMP-2: Tissue inhibitor of metalloproteinase-2; apoE : Apolipoprotein
                                                                                             -/-
            E-deficient; NF-κB: Nuclear factor kapp B; Smad: Sma- and Mad-related proteins; Akt: Protein kinase; miR-17-5p: microRNA-17-5p;
            TXNIP: Thioredoxin-interacting protein; NLRP3: NOD-like receptor thermal protein domain associated protein 3; IL-17: Interleukin-17
            preserving elastin in the aortic wall. It can reduce MMPs   can also significantly attenuate the development of AAA
            and inflammatory cytokine levels , for example, reducing   in  mice  by  inhibiting  AAA  formation  and  inhibiting
                                      [85]
            MCP-1, TNF-α, IL-6, and MMP-2/9 but increasing TIMP-  inflammation and promoting ECM synthesis .
                                                                                                   [91]
            1/2 . In terms of the delivery mode, the safety and   Muse cells were injected intravenously in a mouse AA
              [86]
            feasibility of the NOGA (a company in USA) system for   model, and then they were found selectively migrated
            intravascular delivery of MSCs to the aortic wall in a AAA   and integrated into the AA tissue. Subsequently, Muse
            porcine model have been confirmed . MSCs not only   cells can spontaneously differentiate into VSMCs and
                                          [87]
            inhibit inflammation but also act on damaged VSMCs.   endothelial cells while retaining elastic fibers  and
                                                                                                       [92]
            Studies have shown that intravenous administration of   inhibiting inflammation . Muse cells are characterized
                                                                                   [93]
            human umbilical cord MSCs can maintain or restore   by significantly reducing the diameter of AA compared to
                                                 [88]
            the VSMC contractile phenotype in AAA . VSMCs
            generated by MSC can stimulate the synthesis of aneurysm   non-Muse cells. Hence, muse cell is a promising cell type
                                                               for AA treatment.
            VSMCs to compensate for dead VSMCs and provide elastic
            power for aneurysm VSMCs . For example, the use of   Recently, ADSC has also been studied in the field of
                                   [89]
            PDGF  +  TGFβ1-induced BM-MSC or ADSC-derived      treatment of AA. ADSCs have the characteristics of easy
            VSMCs in tissue sites affected by vascular diseases such   culture and expansion, pluripotency and differentiation ability,
            as AAA can achieve complete autologous therapy .   and the ability to produce trophic factors. Hence, ADSC has
                                                        [90]
            Mesenchymal stem cell-derived exosomes (MSC-exs)   the potential for clinical application in the treatment of AA .
                                                                                                           [94]
            Volume 2 Issue 1 (2023)                         11                     https://doi.org/10.36922/gtm.v2i1.241
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