Cited by 21Cholesterol and Lipid MetabolismCancer, Lipids, and MetabolismImmune cells in cancer

The Liver X Receptor Is Selectively Modulated to Differentially Alter Female Mammary Metastasis-associated Myeloid Cells

Open access
Ma, Liqian, Vidana Gamage, Hashni Epa, Tiwari, Srishti, Han, Chaeyeon, Henn, Madeline A, Krawczynska, Natalia, Dibaeinia, Payam, Koelwyn, Graeme J +7 more·2022·Endocrinology

Abstract

Dysregulation of cholesterol homeostasis is associated with many diseases such as cardiovascular disease and cancer. Liver X receptors (LXRs) are major upstream regulators of cholesterol homeostasis and are activated by endogenous cholesterol metabolites such as 27-hydroxycholesterol (27HC). LXRs and various LXR ligands such as 27HC have been described to influence several extra-hepatic biological systems. However, disparate reports of LXR function have emerged, especially with respect to immunology and cancer biology. This would suggest that, similar to steroid nuclear receptors, the LXRs can be selectively modulated by different ligands. Here, we use RNA-sequencing of macrophages and single-cell RNA-sequencing of immune cells from metastasis-bearing murine lungs to provide evidence that LXR satisfies the 2 principles of selective nuclear receptor modulation: (1) different LXR ligands result in overlapping but distinct gene expression profiles within the same cell type, and (2) the same LXR ligands differentially regulate gene expression in a highly context-specific manner, depending on the cell or tissue type. The concept that the LXRs can be selectively modulated provides the foundation for developing precision pharmacology LXR ligands that are tailored to promote those activities that are desirable (proimmune), but at the same time minimizing harmful side effects (such as elevated triglyceride levels).

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Crossref · 10.1210/endocr/bqac072

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  • 27-hydroxycholesterol works through liver x receptors in myeloid immune cells to suppress T cell proliferation and function, stimulate secretion of pro-tumor extracellular vesicles, and promote tumor and metastatic growth.

    “An oxysterol metabolite of cholesterol, 27-hydroxycholesterol, was found to work through the liver x receptors in myeloid immune cells to robustly suppress T cell proliferation and function, and stimulate the secretion of pro-tumor extracellular vesicles, ultimately promoting the growth of tumors and metastatic lesions (17, 20–23).”

    From Cholesterol efflux protein, ABCA1, supports anticancer functions of myeloid immune cells (2026) · cites this paper as [23]

    The Abstract says 27HC’s effects on myeloid cells require LXR and impair T-cell expansion and function; it also describes protumoral and prometastatic effects. The cited paper does not report that 27HC stimulates secretion of pro-tumor extracellular vesicles (searched: extracellular vesicles, vesicles, exosomes). (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Treatment of BMDMs with cholesterol is known to impair their support of T cell expansion, in part through conversion to the immune-suppressive 27-hydroxycholesterol and activation of the LXRs.

    “Treatment of BMDMs with cholesterol is known to impair their support of T cell expansion, in part through conversion to the immune-suppressive 27-hydroxycholesterol and activation of the LXRs (22, 23).”

    From Cholesterol efflux protein, ABCA1, supports anticancer functions of myeloid immune cells (2026) · cites this paper as [23]

    The CYP27A1 Inhibitor section states that CYP27A1 converts cholesterol to 27HC and that removing this source of 27HC in BMDMs improved their ability to induce T-cell proliferation. The LXR Ligands section says 27HC suppresses macrophage activation of T cells and that suppression depends on macrophage LXR expression. Our copy does not report that treating BMDMs with cholesterol itself impaired their support of T-cell expansion; page numbers were not available. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

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Research works printed but not linked: 4

  1. Nelson ER, Wardell SE, Jasper JS, et al. 27-Hydroxycholesterol links hypercholesterolemia and breast cancer pathophysiology. Science. 2013;342(6162):1094-1098.
  2. Song C, Liao S. Cholestenoic acid is a naturally occurring li- gand for liver X receptor alpha. Endocrinology. 2000;141(11): 4180-4184.
  3. Ma L, Nelson ER. Oxysterols and nuclear receptors. Mol Cell Endocrinol. 2019;484:42-51. doi:10.1016/j.mce.2019.01.016. Epub 2019 Jan 18. PMID: 30660701. · DOI
  4. Soumian S, Albrecht C, Davies AH, Gibbs RG. ABCA1 and athero- sclerosis. Vasc Med. 2005;10(2):109-119.

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Authors
Ma, L., Vidana Gamage, H. E., Tiwari, S., Han, C., Henn, M. A., Krawczynska, N., Dibaeinia, P., Koelwyn, G. J., Das Gupta, A., Bautista Rivas, R. O., Wright, C. L., Xu, F., Moore, K. J., Sinha, S., & Nelson, E. R.
Affiliations
  • University of Illinois Urbana-Champaign (US)
  • Department of Molecular and Integrative Physiology, University of Illinois Urbana-Champaign , Urbana, IL 61801 , USA
  • NYU Langone Health (US)
Corresponding author
Nelson, Erik R
Venue
Endocrinology
Published
2022-05-15
Volume
163
Issue
7
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W4280503326
Cited by
21
References
60
Citations by year
2026: 5 · 2025: 6 · 2024: 5 · 2023: 2 · 2022: 3
FWCI
3.82
Type
journal article
Language
en
Open access
Locations
  • Endocrinology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Cancer Institute (R01CA234025)
  • National Institutes of Health
  • Department of Defense Breast Cancer Research Program Era of Hope Scholar Award (W81XWH-20-BCRP-EOHS/ BC200206)
  • American Institute for Cancer Research (713063)
  • National Heart, Lung, and Blood Institute (R35HL135799)
  • NIH Chemistry-Biology Interface Training (T32-GM136629)
Topics
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Lipids, and Metabolism
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
Keywords
liver X receptor, 27-hydroxycholesterol, cholesterol homeostasis, breast cancer metastasis, myeloid cells, macrophages, lung metastasis, LXR ligands, precision pharmacology, gene expression profiling, single-cell RNA sequencing
MeSH terms
Liver X Receptors, Animals, Cholesterol, Female, Ligands, Macrophages, Mammary Neoplasms, Experimental, Receptors, Steroid, RNA, Myeloid Cells, Mice, Orphan Nuclear Receptors

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