Related Experiment Video
Updated: Jun 21, 2026
09:10
Mesenchymal Stem Cell Regulation of Macrophage Phagocytosis; Quantitation and Imaging
Published on: July 16, 2021
Regulation of macrophage function by sphingosine-1-phosphate
Andreas Weigert1, Nicole Weis, Bernhard Brüne
1Institute of Biochemistry I/ZAFES, Goethe-University Frankfurt am Main, Germany.
Immunobiology
|July 24, 2009
Summary
Sphingosine-1-phosphate (S1P) regulates immune cell functions. The sphingosine kinase/S1P/S1P-receptor pathway in macrophages is crucial for inflammatory diseases like atherosclerosis and cancer.
Area of Science:
- Immunology
- Cell Biology
- Lipid Signaling
Background:
- Sphingosine-1-phosphate (S1P) is a bioactive lipid involved in immune system regulation.
- S1P acts intracellularly or extracellularly via G-protein-coupled receptors (S1P1-5).
- S1P influences macrophage apoptosis, migration, and proliferation.
Purpose of the Study:
- To summarize current knowledge on S1P function in macrophage biology.
- To discuss the role of the sphingosine kinase/S1P/S1P-receptor axis in inflammatory diseases.
Main Methods:
- Literature review and synthesis of existing research.
- Analysis of S1P's impact on macrophage functions.
- Discussion of pathological implications.
Main Results:
- S1P signaling significantly impacts macrophage biology and function.
- The sphingosine kinase/S1P/S1P-receptor pathway is implicated in inflammatory conditions.
- S1P plays a role in the pathogenesis of atherosclerosis, asthma, rheumatoid arthritis, and cancer.
Conclusions:
- The S1P signaling pathway in macrophages is a key player in immune responses.
- Targeting the S1P axis in macrophages offers potential therapeutic strategies for inflammatory diseases.
Related Concept Videos
01:01Regulation of Hematopoietic Stem Cells
All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
01:15Differentiation of Common Myeloid Progenitor Cells
Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
01:45Regulation of Nuclear Protein Sorting
Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...