Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Understanding Macrophage Complexity in Metabolic Dysfunction-associated Steatotic Liver Disease: Transitioning from the M1/M2 Paradigm to Spatial Dynamics

Version 1 : Received: 10 April 2024 / Approved: 11 April 2024 / Online: 12 April 2024 (04:44:38 CEST)

How to cite: Ahamed, F.; Eppler, N.; Jones, E.; Zhang, Y. Understanding Macrophage Complexity in Metabolic Dysfunction-associated Steatotic Liver Disease: Transitioning from the M1/M2 Paradigm to Spatial Dynamics. Preprints 2024, 2024040819. https://doi.org/10.20944/preprints202404.0819.v1 Ahamed, F.; Eppler, N.; Jones, E.; Zhang, Y. Understanding Macrophage Complexity in Metabolic Dysfunction-associated Steatotic Liver Disease: Transitioning from the M1/M2 Paradigm to Spatial Dynamics. Preprints 2024, 2024040819. https://doi.org/10.20944/preprints202404.0819.v1

Abstract

Metabolic dysfunction-associated steatotic liver disease (MASLD) encompasses metabolic dysfunction-associated fatty liver (MASL) and metabolic dysfunction-associated steatohepatitis (MASH), with MASH posing a risk of progression to cirrhosis and hepatocellular carcinoma (HCC). The global prevalence of MASLD is estimated at approximately a quarter of the population, with significant healthcare costs and implications for liver transplantation. The pathogenesis of MASLD involves intrahepatic liver cells, extrahepatic components, and immunological aspects, particularly the involvement of macrophages. Hepatic macrophages are a crucial cellular component of the liver and play vital roles in liver function, contributing significantly to tissue homeostasis and swift responses during pathophysiological conditions. Recent advancements in technology have revealed the remarkable heterogeneity and plasticity of hepatic macrophage populations and their activation states in MASLD, challenging traditional classification methods like the M1/M2 paradigm and highlighting the coexistence of harmful and beneficial macrophage phenotypes that are dynamically regulated during MASLD progression. This complexity underscores the importance of considering macrophage heterogeneity in therapeutic targeting strategies, including their distinct ontogeny and functional phenotypes. This review provides an overview of macrophage involvement in MASLD progression, combining traditional paradigms with recent insights from single-cell analysis and spatial dynamics. It also addresses unresolved questions and potential therapeutic targets in this area.

Keywords

macrophages; diversity; Kupffer cell; monocyte-derived macrophage; spatial dynamics; metabolic dysfunction-associated steatotic liver disease (MASLD)

Subject

Medicine and Pharmacology, Gastroenterology and Hepatology

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.