College of Life Science, Northwest University, Xi'an, China.
Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
Front Immunol. 2021 Jun 29;12:700009. doi: 10.3389/fimmu.2021.700009. eCollection 2021.
Macrophages can be polarized into classically activated macrophages (M1) and alternatively activated macrophages (M2) in the immune system, performing pro-inflammatory and anti-inflammatory functions, respectively. Human THP-1 and mouse RAW264.7 cell line models have been widely used in various macrophage-associated studies, while the similarities and differences in protein expression profiles between the two macrophage models are still largely unclear. In this study, the protein expression profiles of M1 and M2 phenotypes from both THP-1 and RAW264.7 macrophages were systematically investigated using mass spectrometry-based proteomics. By quantitatively analyzing more than 5,000 proteins among different types of macrophages (M0, M1 and M2) from both cell lines, we identified a list of proteins that were uniquely up-regulated in each macrophage type and further confirmed 43 proteins that were commonly up-regulated in M1 macrophages of both cell lines. These results revealed considerable divergences of each polarization type between THP-1 and RAW264.7 macrophages. Moreover, the mRNA and protein expression of CMPK2, RSAD2, DDX58, and DHX58 were strongly up-regulated in M1 macrophages for both macrophage models. These data can serve as important resources for further studies of macrophage-associated diseases in experimental pathology using human and mouse cell line models.
巨噬细胞在免疫系统中可以被极化成为经典激活型巨噬细胞(M1)和交替激活型巨噬细胞(M2),分别发挥促炎和抗炎功能。人 THP-1 和小鼠 RAW264.7 细胞系模型已被广泛应用于各种与巨噬细胞相关的研究中,然而,这两种巨噬细胞模型在蛋白表达谱上的相似性和差异性在很大程度上仍不清楚。在这项研究中,我们使用基于质谱的蛋白质组学技术系统地研究了来自 THP-1 和 RAW264.7 巨噬细胞的 M1 和 M2 表型的蛋白表达谱。通过定量分析来自这两种细胞系的不同巨噬细胞类型(M0、M1 和 M2)中的超过 5000 种蛋白质,我们鉴定出了一系列在每种巨噬细胞类型中特异性上调的蛋白质,并进一步确认了在这两种细胞系的 M1 巨噬细胞中共同上调的 43 种蛋白质。这些结果揭示了 THP-1 和 RAW264.7 巨噬细胞之间每种极化类型的显著差异。此外,在两种巨噬细胞模型的 M1 巨噬细胞中,CMPK2、RSAD2、DDX58 和 DHX58 的 mRNA 和蛋白表达均强烈上调。这些数据可以为使用人源和鼠源细胞系模型进行实验病理学中与巨噬细胞相关疾病的进一步研究提供重要资源。