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Concentrated growth factor regulates the macrophage-mediated immune response
Regenerative Biomaterials ( IF 5.6 ) Pub Date : 2021-08-17 , DOI: 10.1093/rb/rbab049
Haiyun Luo 1 , Wenjing Liu 2 , Yachuan Zhou 3 , Xiao Jiang 4 , Yeungyeung Liu 5 , Qin Yang 1 , Longquan Shao 2
Affiliation  

Concentrated growth factor (CGF) is a promising regenerative material that serves as a scaffold and adjunct growth factor for tissue engineering. The host immune response, particularly macrophage activity, plays a critical role in injury repair and tissue regeneration. However, the biological effect of CGF on the immune response is not clear. To enrich the theoretical groundwork for clinical application, the present study examined the immunoregulatory role of CGF in macrophage functional activities in vitro. The CGF scaffold appeared as a dense fibrin network with multiple embedded leukocytes and platelets, and it was biocompatible with macrophages. Concentrated bioactive factors in the CGF extract enhanced THP-1 monocyte recruitment and promoted the maturation of suspended monocytes into adherent macrophages. CGF extract also promoted THP-1 macrophage polarization toward the M2 phenotype with upregulated CD163 expression, as detected by cell morphology and surface marker expression. A cytokine antibody array showed that CGF extract exerted a regulatory effect on macrophage functional activities by reducing secretion of the inflammatory factor interleukin-1β while inducing expression of the chemokine regulated on activation, normal T cell expressed and secreted. Mechanistically, the AKT signaling pathway was activated, and an AKT inhibitor partially suppressed the immunomodulatory effect of CGF. Our findings reveal that CGF induces a favorable immune response mediated by macrophages, which represents a promising strategy for functional tissue regeneration.

中文翻译:

浓缩生长因子调节巨噬细胞介导的免疫反应

浓缩生长因子(CGF)是一种很有前途的再生材料,可作为组织工程的支架和辅助生长因子。宿主免疫反应,特别是巨噬细胞活性,在损伤修复和组织再生中起关键作用。然而,CGF对免疫反应的生物学作用尚不清楚。为了丰富临床应用的理论基础,本研究检测了 CGF 在体外巨噬细胞功能活动中的免疫调节作用。CGF 支架呈现为密集的纤维蛋白网络,具有多个嵌入的白细胞和血小板,并且与巨噬细胞具有生物相容性。CGF 提取物中浓缩的生物活性因子增强了 THP-1 单核细胞的募集,并促进了悬浮的单核细胞成熟为贴壁巨噬细胞。CGF 提取物还促进 THP-1 巨噬细胞向 M2 表型极化,CD163 表达上调,通过细胞形态和表面标志物表达检测。细胞因子抗体阵列显示,CGF 提取物通过减少炎症因子 IL-1β 的分泌,同时诱导受激活、正常 T 细胞表达和分泌的趋化因子的表达,从而对巨噬细胞的功能活动产生调节作用。从机制上讲,AKT 信号通路被激活,AKT 抑制剂部分抑制了 CGF 的免疫调节作用。我们的研究结果表明,CGF 诱导了由巨噬细胞介导的有利免疫反应,这代表了一种有前途的功能性组织再生策略。通过细胞形态和表面标记表达检测。细胞因子抗体阵列显示,CGF 提取物通过减少炎症因子 IL-1β 的分泌,同时诱导受激活、正常 T 细胞表达和分泌的趋化因子的表达,从而对巨噬细胞的功能活动产生调节作用。从机制上讲,AKT 信号通路被激活,AKT 抑制剂部分抑制了 CGF 的免疫调节作用。我们的研究结果表明,CGF 诱导了由巨噬细胞介导的有利免疫反应,这代表了一种有前途的功能性组织再生策略。通过细胞形态和表面标记表达检测。细胞因子抗体阵列显示,CGF 提取物通过减少炎症因子 IL-1β 的分泌,同时诱导受激活、正常 T 细胞表达和分泌的趋化因子的表达,从而对巨噬细胞的功能活动产生调节作用。从机制上讲,AKT 信号通路被激活,AKT 抑制剂部分抑制了 CGF 的免疫调节作用。我们的研究结果表明,CGF 诱导了由巨噬细胞介导的有利免疫反应,这代表了一种有前途的功能性组织再生策略。细胞因子抗体阵列显示,CGF 提取物通过减少炎症因子 IL-1β 的分泌,同时诱导受激活、正常 T 细胞表达和分泌的趋化因子的表达,从而对巨噬细胞的功能活动产生调节作用。从机制上讲,AKT 信号通路被激活,AKT 抑制剂部分抑制了 CGF 的免疫调节作用。我们的研究结果表明,CGF 诱导了由巨噬细胞介导的有利免疫反应,这代表了一种有前途的功能性组织再生策略。细胞因子抗体阵列显示,CGF 提取物通过减少炎症因子 IL-1β 的分泌,同时诱导受激活、正常 T 细胞表达和分泌的趋化因子的表达,从而对巨噬细胞的功能活动产生调节作用。从机制上讲,AKT 信号通路被激活,AKT 抑制剂部分抑制了 CGF 的免疫调节作用。我们的研究结果表明,CGF 诱导了由巨噬细胞介导的有利免疫反应,这代表了一种有前途的功能性组织再生策略。
更新日期:2021-08-17
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