Related Experiment Video
Updated: Oct 2, 2025
Proteomic Analysis of Human Macrophage Polarization Under a Low Oxygen Environment
Published on: January 7, 2019
Quantitative Proteomics of Polarised Macrophages Derived from Induced Pluripotent Stem Cells
Gavuthami Murugesan1, Lindsay Davidson2, Linda Jannetti3
1Division of Cell Signalling and Immunology, School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK.
Abstract:
Macrophages (MΦ) are highly heterogenous and versatile innate immune cells involved in homeostatic and immune responses. Activated MΦ can exist in two extreme phenotypes: pro-inflammatory (M1) MΦ and anti-inflammatory (M2) MΦ. These phenotypes can be recapitulated in vitro by using ligands of toll-like receptors (TLRs) and cytokines such as IFNγ and IL-4. In recent years, human induced pluripotent stem cells (iPSC)-derived MΦ have gained major attention, as they are functionally similar to human monocyte-derived MΦ and are receptive to genome editing. In this study, we polarised iPSC-derived MΦ to M1 or M2 and analysed their proteome and secretome profiles using quantitative proteomics. These comprehensive proteomic data sets provide new insights into functions of polarised MΦ.
Insights
This study explores macrophage (MΦ) polarization using human induced pluripotent stem cells (iPSC). Proteomic analysis reveals distinct M1 and M2 macrophage profiles, offering new insights into innate immunity.
Area of Science:
- Immunology
- Cell Biology
- Proteomics
Background:
- Macrophages (MΦ) are key innate immune cells with diverse roles in homeostasis and immunity.
- Activated MΦ exhibit distinct pro-inflammatory (M1) and anti-inflammatory (M2) phenotypes.
- Human induced pluripotent stem cell (iPSC)-derived MΦ offer a valuable model for studying macrophage biology and are amenable to genetic manipulation.
Purpose of the Study:
- To investigate the proteome and secretome profiles of polarized M1 and M2 macrophages derived from human iPSCs.
- To gain deeper insights into the functional differences between M1 and M2 macrophage phenotypes.
Main Methods:
- Polarization of iPSC-derived MΦ into M1 and M2 phenotypes using toll-like receptor (TLR) ligands and cytokines (IFNγ, IL-4).
- Quantitative proteomic analysis of the proteome and secretome of polarized iPSC-derived MΦ.
Main Results:
- Comprehensive proteomic and secretomic datasets were generated for M1 and M2 polarized iPSC-derived MΦ.
- These data provide novel insights into the molecular mechanisms underlying MΦ polarization.
Conclusions:
- iPSC-derived MΦ can be effectively polarized into M1 and M2 phenotypes, mirroring primary human MΦ.
- Quantitative proteomic analysis of these cells reveals distinct molecular signatures for M1 and M2 states.
- The generated proteomic data contribute significantly to understanding macrophage heterogeneity and function in immune responses.
