Single cell analysis reveals immune cell-adipocyte crosstalk regulating the transcription of thermogenic adipocytes

Abstract

Immune cells are vital constituents of the adipose microenvironment that influence both local and systemic lipid metabolism. Mice lacking IL10 have enhanced thermogenesis, but the roles of specific cell types in the metabolic response to IL10 remain to be defined. We demonstrate here that selective loss of IL10 receptor a in adipocytes recapitulates the beneficial effects of global IL10 deletion, and that local crosstalk between IL10-producing immune cells and adipocytes is a determinant of thermogenesis and systemic energy balance. Single Nuclei Adipocyte RNA-sequencing (SNAP-seq) of subcutaneous adipose tissue defined a metabolically-active mature adipocyte subtype characterized by robust expression of genes involved in thermogenesis whose transcriptome was selectively responsive to IL10Ra deletion. Furthermore, single-cell transcriptomic analysis of adipose stromal populations identified lymphocytes as a key source of IL10 production in response to thermogenic stimuli. These findings implicate adaptive immune cell-adipocyte communication in the maintenance of adipose subtype identity and function.

Data availability

Sequencing data have been deposited to GEO.

The following data sets were generated

Article and author information

Author details

  1. Prashant Rajbhandari

    Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, United States
    For correspondence
    prashant.rajbhandari@gmail.com
    Competing interests
    No competing interests declared.
  2. Douglas Arneson

    Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, United States
    Competing interests
    No competing interests declared.
  3. Sydney K Hart

    Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, United States
    Competing interests
    No competing interests declared.
  4. In Sook Ahn

    Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, United States
    Competing interests
    No competing interests declared.
  5. Graciel Diamante

    Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, United States
    Competing interests
    No competing interests declared.
  6. Luis C Santos

    Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, United States
    Competing interests
    No competing interests declared.
  7. Nima Zaghari

    Bioinformatics Interdepartmental Program, University of California, Los Angeles, Los Angeles, United States
    Competing interests
    No competing interests declared.
  8. An-Chieh Feng

    Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, United States
    Competing interests
    No competing interests declared.
  9. Brandon J Thomas

    Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, United States
    Competing interests
    No competing interests declared.
  10. Laurent Vergnes

    Department of Human Genetics, University of California, Los Angeles, Los Angeles, United States
    Competing interests
    No competing interests declared.
  11. Stephen D Lee

    Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, United States
    Competing interests
    No competing interests declared.
  12. Abha K Rajbhandari

    Department of Psychiatry and Neuroscience, Icahn School of Medicine at Mount Sinai, New York, United States
    Competing interests
    No competing interests declared.
  13. Karen Reue

    Molecular Biology Institute, University of California, Los Angeles, Los Angeles, United States
    Competing interests
    No competing interests declared.
  14. Stephen T Smale

    Molecular Biology Institute, University of California, Los Angeles, Los Angeles, United States
    Competing interests
    No competing interests declared.
  15. Xia Yang

    Molecular Biology Institute, University of California, Los Angeles, Los Angeles, United States
    Competing interests
    No competing interests declared.
  16. Peter Tontonoz

    Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, United States
    For correspondence
    ptontonoz@mednet.ucla.edu
    Competing interests
    Peter Tontonoz, Reviewing editor, eLife.
    ORCID icon "This ORCID iD identifies the author of this article:" 0000-0003-1259-0477

Funding

National Institutes of Health (K99 DK114571)

  • Prashant Rajbhandari

National Institutes of Health (DK063491)

  • Peter Tontonoz

National Institutes of Health (DK120851)

  • Peter Tontonoz

The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.

Reviewing Editor

  1. Michael Czech, University of Massachusetts Medical School, United States

Ethics

Animal experimentation: This study was performed in strict accordance with the recommendations in the Guide for the Care and Use of Laboratory Animals of the National Institutes of Health. All of the animals were handled according to approved institutional animal care and use committee (IACUC) protocol (99-131) of the University of California, Los Angeles.

Version history

  1. Received: June 19, 2019
  2. Accepted: October 22, 2019
  3. Accepted Manuscript published: October 23, 2019 (version 1)
  4. Version of Record published: November 7, 2019 (version 2)

Copyright

© 2019, Rajbhandari et al.

This article is distributed under the terms of the Creative Commons Attribution License permitting unrestricted use and redistribution provided that the original author and source are credited.

Metrics

  • 14,113
    Page views
  • 1,924
    Downloads
  • 100
    Citations

Article citation count generated by polling the highest count across the following sources: Scopus, Crossref, PubMed Central.

Download links

A two-part list of links to download the article, or parts of the article, in various formats.

Downloads (link to download the article as PDF)

Open citations (links to open the citations from this article in various online reference manager services)

Cite this article (links to download the citations from this article in formats compatible with various reference manager tools)

  1. Prashant Rajbhandari
  2. Douglas Arneson
  3. Sydney K Hart
  4. In Sook Ahn
  5. Graciel Diamante
  6. Luis C Santos
  7. Nima Zaghari
  8. An-Chieh Feng
  9. Brandon J Thomas
  10. Laurent Vergnes
  11. Stephen D Lee
  12. Abha K Rajbhandari
  13. Karen Reue
  14. Stephen T Smale
  15. Xia Yang
  16. Peter Tontonoz
(2019)
Single cell analysis reveals immune cell-adipocyte crosstalk regulating the transcription of thermogenic adipocytes
eLife 8:e49501.
https://doi.org/10.7554/eLife.49501

Share this article

https://doi.org/10.7554/eLife.49501

Further reading

    1. Cell Biology
    Wan-ping Yang, Mei-qi Li ... Qian-qian Luo
    Research Article

    High-altitude polycythemia (HAPC) affects individuals living at high altitudes, characterized by increased red blood cells (RBCs) production in response to hypoxic conditions. The exact mechanisms behind HAPC are not fully understood. We utilized a mouse model exposed to hypobaric hypoxia (HH), replicating the environmental conditions experienced at 6000 m above sea level, coupled with in vitro analysis of primary splenic macrophages under 1% O2 to investigate these mechanisms. Our findings indicate that HH significantly boosts erythropoiesis, leading to erythrocytosis and splenic changes, including initial contraction to splenomegaly over 14 days. A notable decrease in red pulp macrophages (RPMs) in the spleen, essential for RBCs processing, was observed, correlating with increased iron release and signs of ferroptosis. Prolonged exposure to hypoxia further exacerbated these effects, mirrored in human peripheral blood mononuclear cells. Single-cell sequencing showed a marked reduction in macrophage populations, affecting the spleen’s ability to clear RBCs and contributing to splenomegaly. Our findings suggest splenic ferroptosis contributes to decreased RPMs, affecting erythrophagocytosis and potentially fostering continuous RBCs production in HAPC. These insights could guide the development of targeted therapies for HAPC, emphasizing the importance of splenic macrophages in disease pathology.

    1. Cell Biology
    Jurgen Denecke
    Insight

    Mapping proteins in and associated with the Golgi apparatus reveals how this cellular compartment emerges in budding yeast and progresses over time.