1
|
Moore PK, Anderson KC, McManus SA, Tu TH, King EM, Mould KJ, Redente EF, Henson PM, Janssen WJ, McCubbrey AL. Single-cell RNA sequencing reveals unique monocyte-derived interstitial macrophage subsets during lipopolysaccharide-induced acute lung inflammation. Am J Physiol Lung Cell Mol Physiol 2023; 324:L536-L549. [PMID: 36852927 PMCID: PMC10069979 DOI: 10.1152/ajplung.00223.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 02/22/2023] [Accepted: 02/22/2023] [Indexed: 03/01/2023] Open
Abstract
Interstitial macrophages (IMs) reside in the lung tissue surrounding key structures including airways, vessels, and alveoli. Recent work has described IM heterogeneity during homeostasis, however, there are limited data on IMs during inflammation. We sought to characterize IM origin, subsets, and transcriptomic profiles during homeostasis and lipopolysaccharide (LPS) induced acute lung inflammation. During homeostasis, we used three complementary methods, spectral flow cytometry, single-cell RNA-sequencing, and gene regulatory network enrichment, to demonstrate that IMs can be divided into two core subsets distinguished by surface and transcriptional expression of folate receptor β (Folr2/FRβ). These subsets inhabited distinct niches within the lung interstitium. Within FRβ+ IMs we identified a subpopulation marked by coexpression of LYVE1. During acute LPS-induced inflammation, lung IM numbers expand. Lineage tracing revealed IM expansion was due to recruitment of monocyte-derived IMs. At the peak of inflammation, recruited IMs were comprised two unique subsets defined by expression of genes associated with interferon signaling and glycolytic pathways. As recruited IMs matured, they adopted the overall transcriptional state of FRβ- resident IMs but retained expression in several origin-specific genes, such as IL-1β. FRβ+ IMs were of near-pure resident origin. Taken together our data show that during LPS-induced inflammation, there are distinct populations of IMs that likely have unique functions. FRΒ+ IMs comprise a stable, resident population, whereas FRβ- ΙΜs represent a mixed population of resident and recruited IMs.
Collapse
Affiliation(s)
- Peter K Moore
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
- Department of Medicine, National Jewish Health, Denver, Colorado, United States
| | - Kelsey C Anderson
- Center for Genes, Environment, and Health, National Jewish Health, Denver, Colorado, United States
| | - Shannon A McManus
- Department of Medicine, National Jewish Health, Denver, Colorado, United States
| | - Ting-Hui Tu
- Department of Medicine, National Jewish Health, Denver, Colorado, United States
| | - Emily M King
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
| | - Kara J Mould
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
- Department of Medicine, National Jewish Health, Denver, Colorado, United States
| | - Elizabeth F Redente
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
- Department of Pediatrics, National Jewish Health, Denver, Colorado, United States
| | - Peter M Henson
- Department of Pediatrics, National Jewish Health, Denver, Colorado, United States
- Department of Immunology and Microbiology, University of Colorado, Aurora, Colorado, United States
| | - William J Janssen
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
- Department of Medicine, National Jewish Health, Denver, Colorado, United States
| | - Alexandra L McCubbrey
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
- Department of Medicine, National Jewish Health, Denver, Colorado, United States
| |
Collapse
|
2
|
McCubbrey AL, McManus SA, McClendon JD, Thomas SM, Chatwin HB, Reisz JA, D'Alessandro A, Mould KJ, Bratton DL, Henson PM, Janssen WJ. Polyamine import and accumulation causes immunomodulation in macrophages engulfing apoptotic cells. Cell Rep 2022; 38:110222. [PMID: 35021097 PMCID: PMC8859864 DOI: 10.1016/j.celrep.2021.110222] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 10/26/2021] [Accepted: 12/15/2021] [Indexed: 01/01/2023] Open
Abstract
Phagocytosis of apoptotic cells, termed efferocytosis, is critical for tissue homeostasis and drives anti-inflammatory programming in engulfing macrophages. Here, we assess metabolites in naive and inflammatory macrophages following engulfment of multiple cellular and non-cellular targets. Efferocytosis leads to increases in the arginine-derived polyamines, spermidine and spermine, in vitro and in vivo. Surprisingly, polyamine accumulation after efferocytosis does not arise from retention of apoptotic cell metabolites or de novo synthesis but from enhanced polyamine import that is dependent on Rac1, actin, and PI3 kinase. Blocking polyamine import prevents efferocytosis from suppressing macrophage interleukin (IL)-1β or IL-6. This identifies efferocytosis as a trigger for polyamine import and accumulation, and imported polyamines as mediators of efferocytosis-induced immune reprogramming.
Collapse
Affiliation(s)
- Alexandra L McCubbrey
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Denver, CO 80206, USA; Division of Pulmonary Diseases and Critical Care Medicine, Department of Medicine, Aurora, CO 80045, USA.
| | - Shannon A McManus
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Denver, CO 80206, USA
| | - Jazalle D McClendon
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Denver, CO 80206, USA
| | | | - Hope B Chatwin
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Denver, CO 80206, USA
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver - Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver - Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kara J Mould
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Denver, CO 80206, USA; Division of Pulmonary Diseases and Critical Care Medicine, Department of Medicine, Aurora, CO 80045, USA
| | - Donna L Bratton
- Division of Pediatric Allergy and Clinical Immunology, Department of Pediatrics, Denver, CO 80206, USA; Program in Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA
| | - Peter M Henson
- Program in Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA
| | - William J Janssen
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Denver, CO 80206, USA; Division of Pulmonary Diseases and Critical Care Medicine, Department of Medicine, Aurora, CO 80045, USA.
| |
Collapse
|
3
|
Mould KJ, Moore CM, McManus SA, McCubbrey AL, McClendon JD, Griesmer CL, Henson PM, Janssen WJ. Airspace Macrophages and Monocytes Exist in Transcriptionally Distinct Subsets in Healthy Adults. Am J Respir Crit Care Med 2021; 203:946-956. [PMID: 33079572 DOI: 10.1164/rccm.202005-1989oc] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Rationale: Macrophages are the most abundant immune cell in the alveoli and small airways and are traditionally viewed as a homogeneous population during health. Whether distinct subsets of airspace macrophages are present in healthy humans is unknown. Single-cell RNA sequencing allows for examination of transcriptional heterogeneity between cells and between individuals. Understanding the conserved repertoire of airspace macrophages during health is essential to understanding cellular programing during disease.Objectives: We sought to determine the transcriptional heterogeneity of human cells obtained from BAL of healthy adults.Methods: Ten subjects underwent bronchoscopy with BAL. Cells from lavage were subjected to single-cell RNA sequencing. Unique cell populations and putative functions were identified. Transcriptional profiles were compared across individuals.Measurements and Main Results: We identify two novel subgroups of resident airspace macrophages-defined by proinflammatory and metallothionein gene expression profiles. We define subsets of monocyte-like cells and compare them with peripheral blood mononuclear cells. Finally, we compare global macrophage and monocyte programing between males and females.Conclusions: Healthy human airspaces contain multiple populations of myeloid cells that are highly conserved between individuals and between sexes. Resident macrophages make up the largest population and include novel subsets defined by inflammatory and metal-binding profiles. Monocyte-like cells within the airspaces are transcriptionally aligned with circulating blood cells and include a rare population defined by expression of cell-matrix interaction genes. This study is the first to delineate the conserved heterogeneity of airspace immune cells during health and identifies two previously unrecognized macrophage subsets.
Collapse
Affiliation(s)
- Kara J Mould
- Department of Medicine.,Department of Biomedical Research, and
| | - Camille M Moore
- Department of Pediatrics, National Jewish Health, Denver, Colorado.,Department of Medicine, University of Colorado, Aurora, Colorado; and
| | | | | | | | | | - Peter M Henson
- Department of Biomedical Research, and.,Department of Biostatistics and Informatics, University of Colorado, Denver, Colorado
| | | |
Collapse
|
4
|
McManus SA, Topp DA, Hopkins C. Advantages of outpatient breast surgery. Am Surg 1994; 60:967-70. [PMID: 7992976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
This article outlines surgical, financial, and psychosocial advantages of outpatient, definitive breast cancer surgery. The analysis of 118 patients who underwent outpatient breast cancer surgery between January 1991 and December 1993--20 modified radical mastectomy, 90 lumpectomy and axillary dissection or axillary dissection alone, and 8 partial or simple mastectomy--revealed only three patients with minor complications requiring admission. Same-day discharge was safely accomplished by early morning admission and using recovery room time for postoperative education. Outpatient cost was $1572 compared with an average 3-day inpatient cost of $6282, for a potential savings of $4710, or 75%, per patient for modified radical mastectomy. Outpatient cost was $1080 compared with an average 2-day inpatient cost of $4907, for a potential savings of $3827, or 78%, per patient for lumpectomy with axillary node dissection. Patients have indicated a high level of satisfaction with ambulatory surgery and experienced faster healing and recovery at home within the family milieu.
Collapse
Affiliation(s)
- S A McManus
- St. Peter's Medical Center, New Brunswick, New Jersey
| | | | | |
Collapse
|