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3D co-culture model of endothelial colony-forming cells (ECFCs) reverses late passage adipose-derived stem cell senescence for wound healing.
Stem Cell Research & Therapy ( IF 7.1 ) Pub Date : 2020-08-14 , DOI: 10.1186/s13287-020-01838-w
Wansheng Hu 1 , Shengqian Zhu 1 , Mimi Lalrimawii Fanai 1 , Jing Wang 1 , Junrong Cai 1 , Jingwei Feng 1
Affiliation  

Extensive passage of adipose-derived stem cells (ASCs) in vitro leads to loss of function. Endothelial colony-forming cells (ECFCs) can be isolated from adult peripheral blood. A 3D co-culture system may rescue in vitro ASC senescence. A 3D co-culture model was successfully established using hyaluronic acid (HA) gel and a 10:1 ratio of late-passage ASCs and ECFCs. Cell density and culture conditions were optimized. Stem cell phenotype was characterized by flow cytometry. ELISA was used to measure the trophic effect of angiogenic growth factors and compare the effects of these factors between the 3-D co-culture and single-cell culture. Therapeutic potential of ASC/ECFC 3-D co-cultures was evaluated in a mouse chronic injury model. Following incubation in a HA substrate 3D co-culture system, ASC morphology, phenotype, secretory profile, and differentiation capacity were restored. The ASC/ECFC co-culture increased the secretion of cytokines, such as hepatocyte growth factor, compared with single-cell 3D culture or monolayer culture. Mice radiation-ulcer wounds treated with ASC/ECFC 3-D co-cultures (spheroids) showed epithelialization and improved healing compared with wounds treated with ASCs or ECFCs alone. Further, transplanted ASC/ECFC spheroids exhibited superior angiogenic potential due to the ability of the ASCs to transdifferentiate into pericytes. 3D co-culture of ECFCs and ASCs in vitro restored native ASC properties by reversing cellular senescence and loss of trophic function. Transplant of ASC/ECFC 3D spheroids in vivo demonstrated pro-angiogenic capacity with improved therapeutic potential.

中文翻译:

内皮细胞集落形成细胞(ECFC)的3D共培养模型逆转了晚期脂肪来源的干细胞衰老以促进伤口愈合。

脂肪干细胞(ASCs)在体外大量传代会导致功能丧失。可以从成人外周血中分离出内皮集落形成细胞(ECFC)。3D共培养系统可以挽救体外ASC衰老。使用透明质酸(HA)凝胶和晚传ASC和ECFC的比例为10:1成功建立了3D共培养模型。优化细胞密度和培养条件。通过流式细胞术表征干细胞表型。ELISA用于测量血管生成生长因子的营养作用,并比较这些因素在3-D共培养和单细胞培养之间的作用。在小鼠慢性损伤模型中评估了ASC / ECFC 3-D共培养的治疗潜力。在HA底物3D共培养系统中孵育后,ASC形态,表型,分泌谱,和分化能力得到恢复。与单细胞3D培养或单层培养相比,ASC / ECFC共培养增加了细胞因子(例如肝细胞生长因子)的分泌。与仅使用ASCs或ECFCs进行治疗的伤口相比,使用ASC / ECFC 3-D共培养物(球体)治疗的小鼠放射性溃疡伤口表现出上皮化并改善了愈合。此外,由于ASC能够转分化为周细胞,因此移植的ASC / ECFC球体显示出更高的血管生成潜能。ECFC和ASC的3D共培养在体外通过逆转细胞衰老和营养功能丧失来恢复天然ASC特性。体内ASC / ECFC 3D球体的移植显示了促血管生成的能力,具有更高的治疗潜力。与单细胞3D培养或单层培养相比,ASC / ECFC共培养增加了细胞因子(例如肝细胞生长因子)的分泌。与仅使用ASCs或ECFCs进行治疗的伤口相比,使用ASC / ECFC 3-D共培养物(球体)治疗的小鼠放射性溃疡伤口表现出上皮化并改善了愈合。此外,由于ASC能够转分化为周细胞,因此移植的ASC / ECFC球体显示出更高的血管生成潜能。ECFC和ASC的3D共培养在体外通过逆转细胞衰老和营养功能丧失来恢复天然ASC特性。体内ASC / ECFC 3D球体的移植显示了促血管生成的能力,具有更高的治疗潜力。与单细胞3D培养或单层培养相比,ASC / ECFC共培养增加了细胞因子(例如肝细胞生长因子)的分泌。与单独使用ASCs或ECFCs处理的伤口相比,使用ASC / ECFC 3-D共培养物处理的小鼠放射溃疡伤口显示出上皮化并改善了愈合。此外,由于ASC能够转分化为周细胞,因此移植的ASC / ECFC球体显示出更高的血管生成潜能。ECFC和ASC的3D共培养在体外通过逆转细胞衰老和营养功能丧失来恢复天然ASC特性。体内ASC / ECFC 3D球体的移植显示了促血管生成的能力,具有更高的治疗潜力。与仅使用ASCs或ECFCs进行治疗的伤口相比,使用ASC / ECFC 3-D共培养物(球体)治疗的小鼠放射性溃疡伤口表现出上皮化并改善了愈合。此外,由于ASC能够转分化为周细胞,因此移植的ASC / ECFC球体显示出更高的血管生成潜能。ECFC和ASC的3D共培养在体外通过逆转细胞衰老和营养功能丧失来恢复天然ASC特性。体内ASC / ECFC 3D球体的移植显示了促血管生成的能力,具有更高的治疗潜力。与仅使用ASCs或ECFCs进行治疗的伤口相比,使用ASC / ECFC 3-D共培养物(球体)治疗的小鼠放射性溃疡伤口表现出上皮化并改善了愈合。此外,由于ASC能够转分化为周细胞,因此移植的ASC / ECFC球体显示出更高的血管生成潜能。ECFC和ASC的3D共培养在体外通过逆转细胞衰老和营养功能丧失来恢复天然ASC特性。体内ASC / ECFC 3D球体的移植显示了促血管生成的能力,具有更高的治疗潜力。移植的ASC / ECFC椭球体具有优越的血管生成潜力,这是因为ASC能够分化为周细胞。ECFC和ASC的3D共培养在体外通过逆转细胞衰老和营养功能丧失来恢复天然ASC特性。体内ASC / ECFC 3D球体的移植显示了促血管生成的能力,具有更高的治疗潜力。移植的ASC / ECFC椭球体具有优越的血管生成潜力,这是因为ASC能够分化为周细胞。ECFC和ASC的3D共培养在体外通过逆转细胞衰老和营养功能丧失来恢复天然ASC特性。体内ASC / ECFC 3D球体的移植显示了促血管生成的能力,具有更高的治疗潜力。
更新日期:2020-08-14
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