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Liu X, Li Z, Wang HC, Yuan M, Chen J, Huang J, Yu N, Zhou Z, Long X. Single-cell RNA sequencing identifies inherent abnormalities of adipose-derived stem cells from nonlesional sites of patients with localized scleroderma. Cell Mol Biol Lett 2024; 29:115. [PMID: 39215271 PMCID: PMC11363359 DOI: 10.1186/s11658-024-00635-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 08/14/2024] [Indexed: 09/04/2024] Open
Abstract
BACKGROUND Localized scleroderma (LoS) is an autoimmune disorder that primarily affects the skin, and is often treated with autologous fat grafting (AFG). Nevertheless, the retention rate of AFG in patients with LoS is typically low. We hypothesize that the low retention rate may be partially attributed to the inherent abnormalities of adipose-derived stem cells (ASCs) from nonlesional sites of patients with LoS. METHODS We performed a comparative analysis of the single-cell transcriptome of the SVF from nonlesional sites of patients with LoS and healthy donors, including cellular compositional analysis, differential expression analysis, and high-dimensional weighted gene coexpression network analysis. Experimental validation with fluorescence-activated cell sorting and bleomycin-induced skin fibrosis mice models were conducted. RESULTS We found a significant reduction in the relative proportion of CD55high interstitial progenitors in ASCs under the condition of LoS. Differential expression analysis revealed inherent abnormalities of ASCs from patients with LoS, including enhanced fibrogenesis, reduced anti-inflammatory properties, and increased oxidative stress. Compared with CD55low ASCs, CD55high ASCs expressed significantly higher levels of secreted protein genes that had functions related to anti-inflammation and tissue regeneration (such as CD55, MFAP5, and METRNL). Meanwhile, CD55high ASCs expressed significantly lower levels of secreted protein genes that promote inflammation, such as chemokine and complement protein genes. Furthermore, we provided in vivo experimental evidence that CD55high ASCs had superior treatment efficacy compared with CD55low ASCs in bleomycin-induced skin fibrosis mice models. CONCLUSIONS We found that the low retention rate of AFG may be partially ascribed to the reduced pool of interstitial progenitor cells (CD55high) present within the ASC population in patients with LoS. We demonstrated the potential for improving the efficacy of AFG in the treatment of LoS by restoring the pool of interstitial progenitors within ASCs. Our study has significant implications for the field of translational regenerative medicine.
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Affiliation(s)
- Xuanyu Liu
- State Key Laboratory of Cardiovascular Disease, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Center of Laboratory Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - Zhujun Li
- Department of Plastic Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Hayson Chenyu Wang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Meng Yuan
- State Key Laboratory of Cardiovascular Disease, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Center of Laboratory Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - Jie Chen
- Department of Plastic Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Jiuzuo Huang
- Department of Plastic Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Nanze Yu
- Department of Plastic Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China
| | - Zhou Zhou
- State Key Laboratory of Cardiovascular Disease, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Center of Laboratory Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China.
| | - Xiao Long
- Department of Plastic Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, 100730, China.
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Chen H, Sun B, Chang SJ, Yu Z, Qiu Y, Hua C, Lin X. Single-cell sequencing of facial adipose tissue unveils FKBP5 as a therapeutic target for facial infiltrating lipomatosis. Stem Cell Res Ther 2024; 15:209. [PMID: 39020442 PMCID: PMC11256636 DOI: 10.1186/s13287-024-03835-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 07/05/2024] [Indexed: 07/19/2024] Open
Abstract
BACKGROUND Facial infiltrating lipomatosis is characterized by excessive growth of adipose tissue. Its etiology is associated with somatic phosphatidylinositol 3-kinase catalytic subunit alpha (PIK3CA) variants, but the specific mechanisms are not yet fully understood. METHODS We collected facial adipose tissue from both FIL patients and non-FIL individuals, isolated the stromal vascular fraction (SVF) and performed single-cell transcriptome sequencing on these samples. RESULTS We mapped out the cellular landscape within the SVF, with a specific focus on a deeper analysis of fibro-adipogenic precursor cells (FAPs). Our analysis revealed that FAPs from FIL patients (FIL-FAPs) significantly overexpressed FK506 binding protein 51 (FKBP5) compared to FAPs from individuals without FIL. Further experiments indicated that FKBP5 is regulated by the PI3K-AKT signaling pathway. The overactivation of this pathway led to an increase in FKBP5 expression. In vitro experiments demonstrated that FKBP5 promoted adipogenic differentiation of FAPs, a process that could be hindered by FKBP5 knockdown or inhibition. Additionally, in vivo assessments confirmed FKBP5's role in adipogenesis. CONCLUSIONS These insights into the pathogenesis of FIL underscore FKBP5 as a promising target for developing non-surgical interventions to manage the excessive adipose tissue growth in FIL.
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Affiliation(s)
- Hongrui Chen
- Department of Plastic & Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, P.R. China
| | - Bin Sun
- Department of Plastic & Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, P.R. China
| | - Shih-Jen Chang
- Department of Plastic & Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, P.R. China
| | - Zhang Yu
- Department of Plastic & Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, P.R. China
| | - Yajing Qiu
- Department of Plastic & Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, P.R. China
| | - Chen Hua
- Department of Plastic & Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, P.R. China.
| | - Xiaoxi Lin
- Department of Plastic & Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, P.R. China.
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Liu X, Yuan M, Zhao D, Zeng Q, Li W, Li T, Li Q, Zhuo Y, Luo M, Chen P, Wang L, Feng W, Zhou Z. Single-Nucleus Transcriptomic Atlas of Human Pericoronary Epicardial Adipose Tissue in Normal and Pathological Conditions. Arterioscler Thromb Vasc Biol 2024; 44:1628-1645. [PMID: 38813696 PMCID: PMC11208064 DOI: 10.1161/atvbaha.124.320923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 05/15/2024] [Indexed: 05/31/2024]
Abstract
BACKGROUND Pericoronary epicardial adipose tissue (EAT) is a unique visceral fat depot that surrounds the adventitia of the coronary arteries without any anatomic barrier. Clinical studies have demonstrated the association between EAT volume and increased risks for coronary artery disease (CAD). However, the cellular and molecular mechanisms underlying the association remain elusive. METHODS We performed single-nucleus RNA sequencing on pericoronary EAT samples collected from 3 groups of subjects: patients undergoing coronary bypass surgery for severe CAD (n=8), patients with CAD with concomitant type 2 diabetes (n=8), and patients with valvular diseases but without concomitant CAD and type 2 diabetes as the control group (n=8). Comparative analyses were performed among groups, including cellular compositional analysis, cell type-resolved transcriptomic changes, gene coexpression network analysis, and intercellular communication analysis. Immunofluorescence staining was performed to confirm the presence of CAD-associated subclusters. RESULTS Unsupervised clustering of 73 386 nuclei identified 15 clusters, encompassing all known cell types in the adipose tissue. Distinct subpopulations were identified within primary cell types, including adipocytes, adipose stem and progenitor cells, and macrophages. CD83high macrophages and FOSBhigh adipocytes were significantly expanded in CAD. In comparison to normal controls, both disease groups exhibited dysregulated pathways and altered secretome in the primary cell types. Nevertheless, minimal differences were noted between the disease groups in terms of cellular composition and transcriptome. In addition, our data highlight a potential interplay between dysregulated circadian clock and altered physiological functions in adipocytes of pericoronary EAT. ANXA1 (annexin A1) and SEMA3B (semaphorin 3B) were identified as important adipokines potentially involved in functional changes of pericoronary EAT and CAD pathogenesis. CONCLUSIONS We built a complete single-nucleus transcriptomic atlas of human pericoronary EAT in normal and diseased conditions of CAD. Our study lays the foundation for developing novel therapeutic strategies for treating CAD by targeting and modifying pericoronary EAT functions.
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Affiliation(s)
- Xuanyu Liu
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Center of Laboratory Medicine (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Z.Z.), Fuwai Hospital, Beijing, China
| | - Meng Yuan
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Center of Laboratory Medicine (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Z.Z.), Fuwai Hospital, Beijing, China
| | - Danni Zhao
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Center of Laboratory Medicine (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Z.Z.), Fuwai Hospital, Beijing, China
| | - Qingyi Zeng
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Center of Laboratory Medicine (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Z.Z.), Fuwai Hospital, Beijing, China
| | - Wenke Li
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Center of Laboratory Medicine (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Z.Z.), Fuwai Hospital, Beijing, China
| | - Tianjiao Li
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Center of Laboratory Medicine (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Z.Z.), Fuwai Hospital, Beijing, China
| | - Qi Li
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Department of Cardiac Surgery (Q.L., P.C., L.W., W.F.), Fuwai Hospital, Beijing, China
| | - Yue Zhuo
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Center of Vascular Surgery (Y.Z., M.L.), Fuwai Hospital, Beijing, China
| | - Mingyao Luo
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Center of Vascular Surgery (Y.Z., M.L.), Fuwai Hospital, Beijing, China
- Department of Vascular Surgery, Central-China Subcenter of National Center for Cardiovascular Diseases, Henan Cardiovascular Disease Center, Fuwai Central-China Cardiovascular Hospital, Central China Fuwai Hospital of Zhengzhou University, China (M.L.)
- Department of Vascular Surgery, Fuwai Yunnan Cardiovascular Hospital, Affiliated Cardiovascular Hospital of Kunming Medical University, China (M.L.)
| | - Pengfei Chen
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Department of Cardiac Surgery (Q.L., P.C., L.W., W.F.), Fuwai Hospital, Beijing, China
| | - Liqing Wang
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Department of Cardiac Surgery (Q.L., P.C., L.W., W.F.), Fuwai Hospital, Beijing, China
| | - Wei Feng
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Department of Cardiac Surgery (Q.L., P.C., L.W., W.F.), Fuwai Hospital, Beijing, China
| | - Zhou Zhou
- State Key Laboratory of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Q.L., Y.Z., M.L., P.C., L.W., W.F., Z.Z.)
- Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Center of Laboratory Medicine (X.L., M.Y., D.Z., Q.Z., W.L., T.L., Z.Z.), Fuwai Hospital, Beijing, China
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Kratchmarov R, Djeddi S, Dunlap G, He W, Jia X, Burk CM, Ryan T, McGill A, Allegretti JR, Kataru RP, Mehrara BJ, Taylor EM, Agarwal S, Bhattacharyya N, Bergmark RW, Maxfield AZ, Lee S, Roditi R, Dwyer DF, Boyce JA, Buchheit KM, Laidlaw TM, Shreffler WG, Rao DA, Gutierrez-Arcelus M, Brennan PJ. TCF1-LEF1 co-expression identifies a multipotent progenitor cell (T H2-MPP) across human allergic diseases. Nat Immunol 2024; 25:902-915. [PMID: 38589618 DOI: 10.1038/s41590-024-01803-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 03/06/2024] [Indexed: 04/10/2024]
Abstract
Repetitive exposure to antigen in chronic infection and cancer drives T cell exhaustion, limiting adaptive immunity. In contrast, aberrant, sustained T cell responses can persist over decades in human allergic disease. To understand these divergent outcomes, we employed bioinformatic, immunophenotyping and functional approaches with human diseased tissues, identifying an abundant population of type 2 helper T (TH2) cells with co-expression of TCF7 and LEF1, and features of chronic activation. These cells, which we termed TH2-multipotent progenitors (TH2-MPP) could self-renew and differentiate into cytokine-producing effector cells, regulatory T (Treg) cells and follicular helper T (TFH) cells. Single-cell T-cell-receptor lineage tracing confirmed lineage relationships between TH2-MPP, TH2 effectors, Treg cells and TFH cells. TH2-MPP persisted despite in vivo IL-4 receptor blockade, while thymic stromal lymphopoietin (TSLP) drove selective expansion of progenitor cells and rendered them insensitive to glucocorticoid-induced apoptosis in vitro. Together, our data identify TH2-MPP as an aberrant T cell population with the potential to sustain type 2 inflammation and support the paradigm that chronic T cell responses can be coordinated over time by progenitor cells.
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Affiliation(s)
- Radomir Kratchmarov
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Sarah Djeddi
- Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Garrett Dunlap
- Division of Rheumatology, Inflammation, Immunity, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Wenqin He
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Xiaojiong Jia
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Caitlin M Burk
- Center for Immunology and Inflammatory Diseases and Food Allergy Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Tessa Ryan
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Alanna McGill
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jessica R Allegretti
- Division of Gastroenterology, Hepatology and Endoscopy, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Raghu P Kataru
- Plastic and Reconstructive Surgery Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Babak J Mehrara
- Plastic and Reconstructive Surgery Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Erin M Taylor
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard University, Boston, MA, USA
| | - Shailesh Agarwal
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard University, Boston, MA, USA
| | - Neil Bhattacharyya
- Massachusetts Eye & Ear Institute, Harvard Medical School, Boston, MA, USA
| | - Regan W Bergmark
- Division of Otolaryngology Head and Neck Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Center for Surgery and Public Health, Brigham and Women's Hospital, Boston, MA, USA
| | - Alice Z Maxfield
- Division of Otolaryngology Head and Neck Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Stella Lee
- Division of Otolaryngology Head and Neck Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Rachel Roditi
- Division of Otolaryngology Head and Neck Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Daniel F Dwyer
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Joshua A Boyce
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kathleen M Buchheit
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Tanya M Laidlaw
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Wayne G Shreffler
- Center for Immunology and Inflammatory Diseases and Food Allergy Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Deepak A Rao
- Division of Rheumatology, Inflammation, Immunity, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Maria Gutierrez-Arcelus
- Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Patrick J Brennan
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
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Bowman C, Rockson SG. The Role of Inflammation in Lymphedema: A Narrative Review of Pathogenesis and Opportunities for Therapeutic Intervention. Int J Mol Sci 2024; 25:3907. [PMID: 38612716 PMCID: PMC11011271 DOI: 10.3390/ijms25073907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 03/20/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Lymphedema is a chronic and progressive disease of the lymphatic system characterized by inflammation, increased adipose deposition, and tissue fibrosis. Despite early hypotheses identifying lymphedema as a disease of mechanical lymphatic disruption alone, the progressive inflammatory nature underlying this condition is now well-established. In this review, we provide an overview of the various inflammatory mechanisms that characterize lymphedema development and progression. These mechanisms contribute to the acute and chronic phases of lymphedema, which manifest clinically as inflammation, fibrosis, and adiposity. Furthermore, we highlight the interplay between current therapeutic modalities and the underlying inflammatory microenvironment, as well as opportunities for future therapeutic development.
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Affiliation(s)
- Catharine Bowman
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA;
- Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Stanley G. Rockson
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA;
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Chen Z, Ghavimi SAA, Wu M, McNamara J, Barreiro O, Maridas D, Kratchmarov R, Siegel A, Djeddi S, Gutierrez-Arcelus M, Brennan PJ, Padera TP, von Andrian U, Mehrara B, Greene AK, Kahn CR, Orgill DP, Sinha I, Rosen V, Agarwal S. PPARγ agonist treatment reduces fibroadipose tissue in secondary lymphedema by exhausting fibroadipogenic PDGFRα+ mesenchymal cells. JCI Insight 2023; 8:e165324. [PMID: 38131378 PMCID: PMC10807713 DOI: 10.1172/jci.insight.165324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 11/10/2023] [Indexed: 12/23/2023] Open
Abstract
Secondary lymphedema occurs in up to 20% of patients after lymphadenectomy performed for the surgical management of tumors involving the breast, prostate, uterus, and skin. Patients develop progressive edema of the affected extremity due to retention of protein-rich lymphatic fluid. Despite compression therapy, patients progress to chronic lymphedema in which noncompressible fibrosis and adipose tissue are deposited within the extremity. The presence of fibrosis led to our hypothesis that rosiglitazone, a PPARγ agonist that inhibits fibrosis, would reduce fibrosis in a mouse model of secondary lymphedema after hind limb lymphadenectomy. In vivo, rosiglitazone reduced fibrosis in the hind limb after lymphadenectomy. Our findings verified that rosiglitazone reestablished the adipogenic features of TGF-β1-treated mesenchymal cells in vitro. Despite this, rosiglitazone led to a reduction in adipose tissue deposition. Single-cell RNA-Seq data obtained from human tissues and flow cytometric and histological evaluation of mouse tissues demonstrated increased presence of PDGFRα+ cells in lymphedema; human tissue analysis verified these cells have the capacity for adipogenic and fibrogenic differentiation. Upon treatment with rosiglitazone, we noted a reduction in the overall quantity of PDGFRα+ cells and LipidTOX+ cells. Our findings provide a framework for treating secondary lymphedema as a condition of fibrosis and adipose tissue deposition, both of which, paradoxically, can be prevented with a pro-adipogenic agent.
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Affiliation(s)
- Ziyu Chen
- Department of Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
- Department of Bone and Joint Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong, China
| | - Soheila Ali Akbari Ghavimi
- Department of Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Mengfan Wu
- Department of Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | | | | | - David Maridas
- Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Radomir Kratchmarov
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Ashley Siegel
- Department of Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Sarah Djeddi
- Boston Children’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Maria Gutierrez-Arcelus
- Boston Children’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Patrick J. Brennan
- Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Timothy P. Padera
- Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | | | - Babak Mehrara
- Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Arin K. Greene
- Boston Children’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - C. Ronald Kahn
- Joslin Diabetes Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Dennis P. Orgill
- Department of Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Indranil Sinha
- Department of Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Vicki Rosen
- Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Shailesh Agarwal
- Department of Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
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Hwang N, Kang D, Shin SJ, Yoon BK, Chun J, Kim JW, Fang S. Creeping fat exhibits distinct Inflammation-specific adipogenic preadipocytes in Crohn's disease. Front Immunol 2023; 14:1198905. [PMID: 38111581 PMCID: PMC10725931 DOI: 10.3389/fimmu.2023.1198905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 11/17/2023] [Indexed: 12/20/2023] Open
Abstract
Creeping fat (CrF) is an extraintestinal manifestation observed in patients with Crohn's disease (CD). It is characterized by the accumulation of mesenteric adipose tissue (MAT) that wraps around the intestinal wall. Although the role of CrF in CD is still debated, multiple studies have highlighted a correlation between CrF and inflammation, as well as fibrostenosais of the intestine, which contributes to the worsening of CD symptoms. However, the mechanism underlying the potential role of CrF in the development of Crohn's fibrosis remains an enigma. This study aimed to analyze CrF comprehensively using single-cell RNA sequencing analysis. The data was compared with transcriptomic data from adipose tissue in other disease conditions, such as ulcerative colitis, lymphedema, and obesity. Our analysis classified two lineages of preadipocyte (PAC) clusters responsible for adipogenesis and fibrosis in CrF. Committed PACs in CrF showed increased cytokine expression in response to bacterial stimuli, potentially worsening inflammation in patients with CD. We also observed an increase in fibrotic activity in PAC clusters in CrF. Co-analyzing the data from patients with lymphedema, we found that pro-fibrotic PACs featured upregulated pentraxin-3 expression, suggesting a potential target for the treatment of fibrosis in CrF. Furthermore, PACs in CrF exhibited a distinct increase in cell-to-cell communication via cytokines related to inflammation and fibrosis, such as CCL, LIGHT, PDGF, MIF, and SEMA3. Interestingly, these interactions also increased in PACs of the lymphedema, whereas the increased MIF signal of PACs was found to be a distinct characteristic of CrF. In immune cell clusters in CrF, we observed high immune activity of pro-inflammatory macrophages, antigen-presenting macrophages, B cells, and IgG+ plasma cells. Finally, we have demonstrated elevated IgG+ plasma cell infiltration and increased pentraxin-3 protein levels in the fibrotic regions of CrF in CD patients when compared to MAT from both UC patients and healthy individuals. These findings provide new insights into the transcriptomic features related to the inflammation of cells in CrF and suggest potential targets for attenuating fibrosis in CD.
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Affiliation(s)
- Nahee Hwang
- Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, Seoul, Republic of Korea
- Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
- Chronic Intractable Disease for Systems Medicine Research Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Dongwoo Kang
- Department of Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Su-Jin Shin
- Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Bo Kyung Yoon
- Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, Seoul, Republic of Korea
- Chronic Intractable Disease for Systems Medicine Research Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jaeyoung Chun
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jae-woo Kim
- Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, Seoul, Republic of Korea
- Chronic Intractable Disease for Systems Medicine Research Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sungsoon Fang
- Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
- Chronic Intractable Disease for Systems Medicine Research Center, Yonsei University College of Medicine, Seoul, Republic of Korea
- Department of Biomedical Sciences, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
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Avtanski D, Hadzi-Petrushev N, Josifovska S, Mladenov M, Reddy V. Emerging technologies in adipose tissue research. Adipocyte 2023; 12:2248673. [PMID: 37599422 PMCID: PMC10443968 DOI: 10.1080/21623945.2023.2248673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 08/03/2023] [Accepted: 08/07/2023] [Indexed: 08/22/2023] Open
Abstract
Technologies are transforming the understanding of adipose tissue as a complex and dynamic tissue that plays a critical role in energy homoeostasis and metabolic health. This mini-review provides a brief overview of the potential impact of novel technologies in biomedical research and aims to identify areas where these technologies can make the most significant contribution to adipose tissue research. It discusses the impact of cutting-edge technologies such as single-cell sequencing, multi-omics analyses, spatial transcriptomics, live imaging, 3D tissue engineering, microbiome analysis, in vivo imaging, and artificial intelligence/machine learning. As these technologies continue to evolve, we can expect them to play an increasingly important role in advancing our understanding of adipose tissue and improving the treatment of related diseases.
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Affiliation(s)
- Dimiter Avtanski
- Friedman Diabetes Institute, Lenox Hill Hospital, New York, NY, USA
- Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Nikola Hadzi-Petrushev
- Faculty of Natural Sciences and Mathematics, Institute of Biology, “Ss. Cyril and Methodius” University, Skopje, North Macedonia
| | - Slavica Josifovska
- Faculty of Natural Sciences and Mathematics, Institute of Biology, “Ss. Cyril and Methodius” University, Skopje, North Macedonia
| | - Mitko Mladenov
- Faculty of Natural Sciences and Mathematics, Institute of Biology, “Ss. Cyril and Methodius” University, Skopje, North Macedonia
| | - Varun Reddy
- New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY, USA
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Fu M, Shu S, Peng Z, Liu X, Chen X, Zeng Z, Yang Y, Cui H, Zhao R, Wang X, Du L, Wu M, Feng W, Song J. Single-Cell RNA Sequencing of Coronary Perivascular Adipose Tissue From End-Stage Heart Failure Patients Identifies SPP1+ Macrophage Subpopulation as a Target for Alleviating Fibrosis. Arterioscler Thromb Vasc Biol 2023; 43:2143-2164. [PMID: 37706320 PMCID: PMC10597444 DOI: 10.1161/atvbaha.123.319828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 08/29/2023] [Indexed: 09/15/2023]
Abstract
BACKGROUND Perivascular adipose tissue (PVAT) is vital for vascular homeostasis, and PVAT dysfunction is associated with increased atherosclerotic plaque burden. But the mechanisms underlining coronary PVAT dysfunction in coronary atherosclerosis remain elusive. METHODS We performed single-cell RNA sequencing of the stromal vascular fraction of coronary PVAT from 3 groups of heart transplant recipients with end-stage heart failure, including 3 patients with nonobstructive coronary atherosclerosis, 3 patients with obstructive coronary artery atherosclerosis, and 4 nonatherosclerosis control subjects. Bioinformatics was used to annotate the cellular populations, depict the cellular developmental trajectories and interactions, and explore the differences among 3 groups of coronary PVAT at the cellular and molecular levels. Pathological staining, quantitative real-time polymerase chain reaction, and in vitro studies were performed to validate the key findings. RESULTS Ten cell types were identified among 67 936 cells from human coronary PVAT. Several cellular subpopulations, including SPP1+ (secreted phosphoprotein 1) macrophages and profibrotic fibroadipogenic progenitor cells, were accumulated in PVAT surrounding atherosclerotic coronary arteries compared with nonatherosclerosis coronary arteries. The fibrosis percentage was increased in PVAT surrounding atherosclerotic coronary arteries, and it was positively associated with the grade of coronary artery stenosis. Cellular interaction analysis suggested OPN (osteopontin) secreted by SPP1+ macrophages interacted with CD44 (cluster of differentiation 44)/integrin on fibroadipogenic progenitor cells. Strikingly, correlation analyses uncovered that higher level of SPP1 in PVAT correlates with a more severe fibrosis degree and a higher coronary stenosis grade. In vitro studies showed that conditioned medium from atherosclerotic coronary PVAT promoted the migration and proliferation of fibroadipogenic progenitor cells, while such effect was prevented by blocking CD44 or integrin. CONCLUSIONS SPP1+ macrophages accumulated in the PVAT surrounding atherosclerotic coronary arteries, and they promoted the migration and proliferation of fibroadipogenic progenitor cells via OPN-CD44/integrin interaction and thus aggravated the fibrosis of coronary PVAT, which was positively correlated to the coronary stenosis burden. Therefore, SPP1+ macrophages in coronary PVAT may participate in the progression of coronary atherosclerosis.
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Affiliation(s)
- Mengxia Fu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases (M.F., S.S., X.L., X.C., Z.Z., Y.Y., H.C., R.Z., X.W., W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Galactophore Department, Galactophore Center, Beijing Shijitan Hospital (M.F., M.W.), Capital Medical University, China
| | - Songren Shu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases (M.F., S.S., X.L., X.C., Z.Z., Y.Y., H.C., R.Z., X.W., W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- The Cardiomyopathy Research Group at Fuwai Hospital, China (S.S., X.L., X.C., H.C., R.Z., X.W., J.S.)
| | - Zhiming Peng
- Department of Orthopedics, Peking Union Medical College Hospital (Z.P.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaorui Liu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases (M.F., S.S., X.L., X.C., Z.Z., Y.Y., H.C., R.Z., X.W., W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- The Cardiomyopathy Research Group at Fuwai Hospital, China (S.S., X.L., X.C., H.C., R.Z., X.W., J.S.)
| | - Xiao Chen
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases (M.F., S.S., X.L., X.C., Z.Z., Y.Y., H.C., R.Z., X.W., W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- The Cardiomyopathy Research Group at Fuwai Hospital, China (S.S., X.L., X.C., H.C., R.Z., X.W., J.S.)
| | - Zhiwei Zeng
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases (M.F., S.S., X.L., X.C., Z.Z., Y.Y., H.C., R.Z., X.W., W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yicheng Yang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases (M.F., S.S., X.L., X.C., Z.Z., Y.Y., H.C., R.Z., X.W., W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hao Cui
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases (M.F., S.S., X.L., X.C., Z.Z., Y.Y., H.C., R.Z., X.W., W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- The Cardiomyopathy Research Group at Fuwai Hospital, China (S.S., X.L., X.C., H.C., R.Z., X.W., J.S.)
| | - Ruojin Zhao
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases (M.F., S.S., X.L., X.C., Z.Z., Y.Y., H.C., R.Z., X.W., W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- The Cardiomyopathy Research Group at Fuwai Hospital, China (S.S., X.L., X.C., H.C., R.Z., X.W., J.S.)
| | - Xiaohu Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases (M.F., S.S., X.L., X.C., Z.Z., Y.Y., H.C., R.Z., X.W., W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- The Cardiomyopathy Research Group at Fuwai Hospital, China (S.S., X.L., X.C., H.C., R.Z., X.W., J.S.)
| | - Leilei Du
- Laboratory of Cardiovascular Science, Beijing Clinical Research Institute, Beijing Friendship Hospital (L.D.), Capital Medical University, China
| | - Min Wu
- Galactophore Department, Galactophore Center, Beijing Shijitan Hospital (M.F., M.W.), Capital Medical University, China
| | - Wei Feng
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases (M.F., S.S., X.L., X.C., Z.Z., Y.Y., H.C., R.Z., X.W., W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases (W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiangping Song
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases (M.F., S.S., X.L., X.C., Z.Z., Y.Y., H.C., R.Z., X.W., W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases (W.F., J.S.), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- The Cardiomyopathy Research Group at Fuwai Hospital, China (S.S., X.L., X.C., H.C., R.Z., X.W., J.S.)
- Shenzhen Key Laboratory of Cardiovascular Disease, Fuwai Hospital Chinese Academy of Medical Sciences, China (J.S.)
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10
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Fu A, Liu C. Analysis of CD4 + T-helper-associated hub gene signature and immune dysregulation via RNA-sequencing data in a mouse tail model of lymphedema. Gland Surg 2023; 12:1141-1157. [PMID: 37842538 PMCID: PMC10570970 DOI: 10.21037/gs-23-48] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 09/02/2023] [Indexed: 10/17/2023]
Abstract
Background T-helper cells play an essential role in the progression of lymphedema. This study aimed to explore the biological significance of T-helper cell-associated genes (THAGs) in a mouse tail model of lymphedema by RNA-sequencing (RNA-seq) data. Methods The expression profiles of a murine model of secondary lymphedema were obtained from European Nucleotide Archive (ENA) database. Differentially expressed genes (DEGs) were screened and the enrichment analysis of DEGs was conducted. THAGs were constructed by crossing the T-helper-related gene sets obtained from Molecular Signatures Database with DEGs. Protein-protein interaction (PPI) network analysis was utilized to establish T-helper-associated hub genes (THAHGs). Single-sample gene set enrichment analysis (ssGSEA) was employed to decipher differences in immune cell infiltration. The correlation between THAHGs and immune infiltration was calculated by Pearson correlation analysis. Receiver operating characteristic (ROC) curves of THAHGs were drawn to evaluate their diagnostic properties. Additionally, potential drugs and upstream transcription factors (TFs) were predicted based on THAHGs. Results Enrichment analysis showed that lymphedematous tissue presented higher activation of biological process (BP) of T-helper 1 (Th1), T-helper 2 (Th2), T-helper 17 (Th17). The immune infiltration analysis further calculated that the relative immune abundance of follicular B cells, memory B cells, M1 macrophage, and CD4+ Tm cells was significantly elevated while the relative immune abundance of neutrophils and plasma cells were down-regulated in lymphedema. We established a list of THAHGs consisting of eight hub genes, compassing Cd4, Foxp3, Irf4, Ccr6, Il12rb1, Batf, Il1b, Cd74. THAHGs were shown to be significantly interrelated and related to immune infiltration by Pearson correlation analysis. ROC curves showcased that the area under curve (AUC) values of THAHGs were larger than 0.70. Gata3 was the most potential TF and thalidomide might be the immunoregulatory drug for lymphedema based on THAHGs. Conclusions Biological pathways associated with T-helpers were significantly enriched in mouse lymphedema tissue. The relative immune infiltration abundance of M1 macrophage, CD4+ Tm cells, and T-helper cells was higher in the lymphedema group. Besides, we identified the THAHGs containing eight genes, namely, Cd4, Foxp3, Irf4, Ccr6, Il12rb1, Batf, Il1b, and Cd74. The THAHGs were closely correlated with immune infiltration results and with good diagnostic properties.
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Affiliation(s)
- Ao Fu
- Department of Oncoplastic and Reconstructive Breast Surgery, Plastic Surgery Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Chunjun Liu
- Department of Oncoplastic and Reconstructive Breast Surgery, Plastic Surgery Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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11
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Liu X, Yin K, Chen L, Chen W, Li W, Zhang T, Sun Y, Yuan M, Wang H, Song Y, Wang S, Hu S, Zhou Z. Lineage-specific regulatory changes in hypertrophic cardiomyopathy unraveled by single-nucleus RNA-seq and spatial transcriptomics. Cell Discov 2023; 9:6. [PMID: 36646705 PMCID: PMC9842679 DOI: 10.1038/s41421-022-00490-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 10/29/2022] [Indexed: 01/18/2023] Open
Abstract
Hypertrophic cardiomyopathy (HCM) is the most common cardiac genetic disorder characterized by cardiomyocyte hypertrophy and cardiac fibrosis. Pathological cardiac remodeling in the myocardium of HCM patients may progress to heart failure. An in-depth elucidation of the lineage-specific changes in pathological cardiac remodeling of HCM is pivotal for the development of therapies to mitigate the progression. Here, we performed single-nucleus RNA-seq of the cardiac tissues from HCM patients or healthy donors and conducted spatial transcriptomic assays on tissue sections from patients. Unbiased clustering of 55,122 nuclei from HCM and healthy conditions revealed 9 cell lineages and 28 clusters. Lineage-specific changes in gene expression, subpopulation composition, and intercellular communication in HCM were discovered through comparative analyses. According to the results of pseudotime ordering, differential expression analysis, and differential regulatory network analysis, potential key genes during the transition towards a failing state of cardiomyocytes such as FGF12, IL31RA, and CREB5 were identified. Transcriptomic dynamics underlying cardiac fibroblast activation were also uncovered, and potential key genes involved in cardiac fibrosis were obtained such as AEBP1, RUNX1, MEOX1, LEF1, and NRXN3. Using the spatial transcriptomic data, spatial activity patterns of the candidate genes, pathways, and subpopulations were confirmed on patient tissue sections. Moreover, we showed experimental evidence that in vitro knockdown of AEBP1 could promote the activation of human cardiac fibroblasts, and overexpression of AEBP1 could attenuate the TGFβ-induced activation. Our study provided a comprehensive analysis of the lineage-specific regulatory changes in HCM, which laid the foundation for targeted drug development in HCM.
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Affiliation(s)
- Xuanyu Liu
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China
- Center of Laboratory Medicine, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Beijing, China
| | - Kunlun Yin
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China
- Center of Laboratory Medicine, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Beijing, China
| | - Liang Chen
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China
- Department of Cardiovascular Surgery, Fuwai Hospital, Beijing, China
| | - Wen Chen
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China
- Center of Laboratory Medicine, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Beijing, China
| | - Wenke Li
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China
- Center of Laboratory Medicine, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Beijing, China
| | - Taojun Zhang
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China
- Center of Laboratory Medicine, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Beijing, China
| | - Yang Sun
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China
- Center of Laboratory Medicine, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Beijing, China
- Department of Pathology, Fuwai Hospital, Beijing, China
| | - Meng Yuan
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China
- Center of Laboratory Medicine, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Beijing, China
| | - Hongyue Wang
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China
- Center of Laboratory Medicine, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Beijing, China
- Department of Pathology, Fuwai Hospital, Beijing, China
| | - Yunhu Song
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China
- Department of Cardiovascular Surgery, Fuwai Hospital, Beijing, China
| | - Shuiyun Wang
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China.
- Department of Cardiovascular Surgery, Fuwai Hospital, Beijing, China.
| | - Shengshou Hu
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China.
- Department of Cardiovascular Surgery, Fuwai Hospital, Beijing, China.
| | - Zhou Zhou
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, the Chinese Academy of Medical Sciences, Beijing, China.
- Center of Laboratory Medicine, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Beijing, China.
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Blei F. Update August 2022. Lymphat Res Biol 2022; 20:443-464. [PMID: 35993922 DOI: 10.1089/lrb.2022.29127.fb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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