1
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Gupta S, Yamada E, Nakamura H, Perez P, Pranzatelli TJ, Dominick K, Jang SI, Abed M, Martin D, Burbelo P, Zheng C, French B, Alevizos I, Khavandgar Z, Beach M, Pelayo E, Walitt B, Hasni S, Kaplan MJ, Tandon M, Magone MT, Kleiner DE, Chiorini JA, Baer A, Warner BM. Inhibition of JAK-STAT pathway corrects salivary gland inflammation and interferon driven immune activation in Sjögren's disease. Ann Rheum Dis 2024:ard-2023-224842. [PMID: 38527764 DOI: 10.1136/ard-2023-224842] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 03/13/2024] [Indexed: 03/27/2024]
Abstract
OBJECTIVES Inflammatory cytokines that signal through the Janus kinases-signal transducer and activator of transcription (JAK-STAT) pathway, especially interferons (IFNs), are implicated in Sjögren's disease (SjD). Although inhibition of JAKs is effective in other autoimmune diseases, a systematic investigation of IFN-JAK-STAT signalling and the effect of JAK inhibitor (JAKi) therapy in SjD-affected human tissues has not been fully investigated. METHODS Human minor salivary glands (MSGs) and peripheral blood mononuclear cells (PBMCs) were investigated using bulk or single-cell (sc) RNA sequencing (RNAseq), immunofluorescence (IF) microscopy and flow cytometry. Ex vivo culture assays on PBMCs and primary salivary gland epithelial cell (pSGEC) lines were performed to model changes in target tissues before and after JAKi. RESULTS RNAseq and IF showed activated JAK-STAT pathway in SjD MSGs. Elevated IFN-stimulated gene (ISGs) expression associated with clinical variables (eg, focus scores, anti-SSA positivity). scRNAseq of MSGs exhibited cell type-specific upregulation of JAK-STAT and ISGs; PBMCs showed similar trends, including markedly upregulated ISGs in monocytes. Ex vivo studies showed elevated basal pSTAT levels in SjD MSGs and PBMCs that were corrected with JAKi. SjD-derived pSGECs exhibited higher basal ISG expressions and exaggerated responses to IFN-β, which were normalised by JAKi without cytotoxicity. CONCLUSIONS SjD patients' tissues exhibit increased expression of ISGs and activation of the JAK-STAT pathway in a cell type-dependent manner. JAKi normalises this aberrant signalling at the tissue level and in PBMCs, suggesting a putative viable therapy for SjD, targeting both glandular and extraglandular symptoms. Predicated on these data, a phase Ib/IIa randomised controlled trial to treat SjD with tofacitinib was initiated.
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Affiliation(s)
- Sarthak Gupta
- Lupus Clinical Trials Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Eiko Yamada
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Hiroyuki Nakamura
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Paola Perez
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Thomas Jf Pranzatelli
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Kalie Dominick
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Shyh-Ing Jang
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Mehdi Abed
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Daniel Martin
- Genomics and Computational Biology Core, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Peter Burbelo
- Genomics and Computational Biology Core, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - ChangYu Zheng
- Genomics and Computational Biology Core, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Ben French
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Ilias Alevizos
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Zohreh Khavandgar
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
- NIDCR Sjögren's Disease Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Margaret Beach
- NIDCR Sjögren's Disease Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Eileen Pelayo
- NIDCR Sjögren's Disease Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Brian Walitt
- NIDCR Sjögren's Disease Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Sarfaraz Hasni
- Lupus Clinical Trials Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Mariana J Kaplan
- Lupus Clinical Trials Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Mayank Tandon
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Maria Teresa Magone
- Consult Services Section, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - David E Kleiner
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - John A Chiorini
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Alan Baer
- NIDCR Sjögren's Disease Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
| | - Blake M Warner
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
- NIDCR Sjögren's Disease Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
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2
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Warner B, Pranzatelli T, Perez P, Ku A, Matuck BF, Huynh K, Sakai S, Abed M, Jang SI, Yamada E, Dominick K, Ahmed Z, Oliver A, Wasikowski R, Easter Q, Magone MT, Baer A, Pelayo E, Khavandgar Z, Gupta S, Kleiner D, Lessard C, Farris A, Martin D, Morell R, Zheng C, Rachmaninoff N, Maldonado-Ortiz J, Qu X, Aure M, Dezfulian M, Lake R, Teichmann S, Barber D, Tsoi L, Sowalsky A, Tyc K, Gudjonsson J, Byrd K, Johnson P, Liu J, Chiorini J. GZMK+CD8+ T cells Target a Specific Acinar Cell Type in Sjögren's Disease. Res Sq 2023:rs.3.rs-3601404. [PMID: 38196575 PMCID: PMC10775371 DOI: 10.21203/rs.3.rs-3601404/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Sjögren's Disease (SjD) is a systemic autoimmune disease without a clear etiology or effective therapy. Utilizing unbiased single-cell and spatial transcriptomics to analyze human minor salivary glands in health and disease we developed a comprehensive understanding of the cellular landscape of healthy salivary glands and how that landscape changes in SjD patients. We identified novel seromucous acinar cell types and identified a population of PRR4+CST3+WFDC2- seromucous acinar cells that are particularly targeted in SjD. Notably, GZMK+CD8 T cells, enriched in SjD, exhibited a cytotoxic phenotype and were physically associated with immune-engaged epithelial cells in disease. These findings shed light on the immune response's impact on transitioning acinar cells with high levels of secretion and explain the loss of this specific cell population in SjD. This study explores the complex interplay of varied cell types in the salivary glands and their role in the pathology of Sjögren's Disease.
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Affiliation(s)
- Blake Warner
- National Institute of Dental and Craniofacial Research
| | | | | | - Anson Ku
- Laboratory of Genitourinary Cancer Pathogenesis, Center for Cancer Research, National Cancer Institute
| | | | | | | | - Mehdi Abed
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research
| | | | - Eiko Yamada
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research
| | - Kalie Dominick
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research
| | - Zara Ahmed
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research
| | | | | | | | | | - Alan Baer
- Sjögren's Clinical Investigations Team, National Institute of Dental and Craniofacial Research
| | | | - Zohreh Khavandgar
- Sjögren's Clinical Investigations Team, National Institute of Dental and Craniofacial Research
| | - Sarthak Gupta
- National Institute of Arthritis and Musculoskeletal and Skin Diseases
| | - David Kleiner
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute
| | - Christopher Lessard
- Genes & Human Disease Research Program, Oklahoma Medical Research Foundation
| | - A Farris
- Oklahoma Medical Research Fd. OMRF
| | | | - Robert Morell
- Genomics and Computational Biology Core, National Institutes on Deafness and Other Communication Disorders, NIH
| | - Changyu Zheng
- Genomics and Computational Biology Core, National Institute of Dental and Craniofacial Research
| | | | | | - Xufeng Qu
- Massey Cancer Center, Virginia Commonwealth University
| | - Marit Aure
- Matrix and Morphogenesis Section, National Institute of Dental and Craniofacial Research
| | | | - Ross Lake
- Laboratory of Genitourinary Cancer Pathogenesis (LCGP) Microscopy Core Facility, Center for Cancer Research, National Cancer Institute
| | | | - Daniel Barber
- T-lymphocyte Biology Section, National Institute of Allergy and Infectious Diseases
| | - Lam Tsoi
- Medical University of South Carolina
| | | | - Katarzyna Tyc
- Department of Biostatistics, Virginia Commonwealth University
| | | | - Kevin Byrd
- Lab of Oral & Craniofacial Innovation (LOCI), Department of Innovation & Technology Research, ADA Science & Research Institute
| | - Philip Johnson
- Department of Biology, University of Maryland College Park
| | | | - John Chiorini
- National Institute of Dental and Craniofacial Research
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3
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Gupta S, Yamada E, Nakamura H, Perez P, Pranzatelli TJ, Dominick K, Jang SI, Abed M, Martin D, Burbelo P, Zheng C, French B, Alevizos I, Khavandgar Z, Beach M, Pelayo E, Walitt B, Hasni S, Kaplan MJ, Tandon M, Teresa Magone M, Kleiner DE, Chiorini JA, Baer AN, Warner BM. Inhibition of JAK-STAT pathway corrects salivary gland inflammation and interferon driven immune activation in Sjögren's Disease. medRxiv 2023:2023.08.16.23294130. [PMID: 37662351 PMCID: PMC10473773 DOI: 10.1101/2023.08.16.23294130] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Objectives Inflammatory cytokines that signal through the JAK- STAT pathway, especially interferons (IFNs), are implicated in Sjögren's Disease (SjD). Although inhibition of JAKs is effective in other autoimmune diseases, a systematic investigation of IFN-JAK-STAT signaling and effect of JAK inhibitor (JAKi) therapy in SjD-affected human tissues has not been reported. Methods Human minor salivary glands (MSGs) and peripheral blood mononuclear cells (PBMCs) were investigated using bulk or single cell (sc) RNA sequencing (RNAseq), immunofluorescence microscopy (IF), and flow cytometry. Ex vivo culture assays on PBMCs and primary salivary gland epithelial cell (pSGEC) lines were performed to model changes in target tissues before and after JAKi. Results RNAseq and IF showed activated JAK-STAT pathway in SjD MSGs. Elevated IFN-stimulated gene (ISGs) expression associated with clinical variables (e.g., focus scores, anti-SSA positivity). scRNAseq of MSGs exhibited cell-type specific upregulation of JAK-STAT and ISGs; PBMCs showed similar trends, including markedly upregulated ISGs in monocytes. Ex vivo studies showed elevated basal pSTAT levels in SjD MSGs and PBMCs that were corrected with JAKi. SjD-derived pSGECs exhibited higher basal ISG expressions and exaggerated responses to IFNβ, which were normalized by JAKi without cytotoxicity. Conclusions SjD patients' tissues exhibit increased expression of ISGs and activation of the JAK-STAT pathway in a cell type-dependent manner. JAKi normalizes this aberrant signaling at the tissue level and in PBMCs, suggesting a putative viable therapy for SjD, targeting both glandular and extraglandular symptoms. Predicated on these data, a Phase Ib/IIa randomized controlled trial to treat SjD with tofacitinib was initiated.
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Affiliation(s)
- Sarthak Gupta
- Lupus Clinical Trials Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda MD, USA
| | - Eiko Yamada
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Hiroyuki Nakamura
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Paola Perez
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Thomas J.F. Pranzatelli
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Kalie Dominick
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Shyh-Ing Jang
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Mehdi Abed
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Daniel Martin
- Genomics and Computational Biology Core, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Peter Burbelo
- Genomics and Computational Biology Core, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Changyu Zheng
- Genomics and Computational Biology Core, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Ben French
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Ilias Alevizos
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Zohreh Khavandgar
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
- NIDCR Sjögren’s Disease Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Margaret Beach
- NIDCR Sjögren’s Disease Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Eileen Pelayo
- NIDCR Sjögren’s Disease Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Brian Walitt
- NIDCR Sjögren’s Disease Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Sarfaraz Hasni
- Lupus Clinical Trials Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda MD, USA
| | - Mariana J. Kaplan
- Lupus Clinical Trials Unit, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda MD, USA
- Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda MD, USA
| | - Mayank Tandon
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - M. Teresa Magone
- Consult Services Section, National Eye Institute, National Institutes of Health, Bethesda MD, USA
| | - David E. Kleiner
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda MD, USA
| | - John A. Chiorini
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Alan N. Baer
- NIDCR Sjögren’s Disease Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Blake M. Warner
- Salivary Disorder Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
- NIDCR Sjögren’s Disease Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
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4
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Nakamura H, Tanaka T, Pranzatelli T, Ji Y, Yin H, Perez P, Afione SA, Jang SI, Goldsmith C, Zheng CY, Swaim WD, Warner BM, Hirata N, Noguchi M, Atsumi T, Chiorini JA. Lysosome-associated membrane protein 3 misexpression in salivary glands induces a Sjögren's syndrome-like phenotype in mice. Ann Rheum Dis 2021; 80:1031-1039. [PMID: 33658234 PMCID: PMC8292598 DOI: 10.1136/annrheumdis-2020-219649] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/28/2021] [Accepted: 02/19/2021] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Sjögren's syndrome (SS) is an autoimmune sialadenitis with unknown aetiology. Although extensive research implicated an abnormal immune response associated with lymphocytes, an initiating event mediated by salivary gland epithelial cell (SGEC) abnormalities causing activation is poorly characterised. Transcriptome studies have suggested alternations in lysosomal function are associated with SS, but a cause and effect linkage has not been established. In this study, we demonstrated that altered lysosome activity in SGECs by expression of lysosome-associated membrane protein 3 (LAMP3) can initiate an autoimmune response with autoantibody production and salivary dysfunction similar to SS. METHODS Retroductal cannulation of the submandibular salivary glands with an adeno-associated virus serotype 2 vector encoding LAMP3 was used to establish a model system. Pilocarpine-stimulated salivary flow and the presence of autoantibodies were assessed at several time points post-cannulation. Salivary glands from the mice were evaluated using RNAseq and histologically. RESULTS Following LAMP3 expression, saliva flow was significantly decreased and serum anti-Ro/SSA and La/SSB antibodies could be detected in the treated mice. Mechanistically, LAMP3 expression increased apoptosis in SGECs and decreased protein expression related to saliva secretion. Analysis of RNAseq data suggested altered lysosomal function in the transduced SGECs, and that the cellular changes can chemoattract immune cells into the salivary glands. Immune cells were activated via toll-like receptors by damage-associated molecular patterns released from LAMP3-expressing SGECs. CONCLUSIONS These results show a critical role for lysosomal trafficking in the development of SS and establish a causal relationship between LAMP3 misexpression and the development of SS.
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Affiliation(s)
- Hiroyuki Nakamura
- AAV Biology Section, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
| | - Tsutomu Tanaka
- AAV Biology Section, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
| | - Thomas Pranzatelli
- AAV Biology Section, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
| | - Youngmi Ji
- AAV Biology Section, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
| | - Hongen Yin
- AAV Biology Section, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
| | - Paola Perez
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
| | - Sandra A Afione
- AAV Biology Section, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
| | - Shyh-Ing Jang
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
| | - Corrine Goldsmith
- AAV Biology Section, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
| | - Chang Yu Zheng
- AAV Biology Section, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
| | - William D Swaim
- AAV Biology Section, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
| | - Blake M Warner
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
| | - Noriyuki Hirata
- Division of Cancer Biology, Hokkaido University, Sapporo, Japan
| | | | - Tatsuya Atsumi
- Department of Rheumatology, Endocrinology and Nephrology, Hokkaido University, Sapporo, Japan
| | - John A Chiorini
- AAV Biology Section, National Institute of Dental and Craniofacial Research, Bethesda, Maryland, USA
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5
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Huang N, Pérez P, Kato T, Mikami Y, Okuda K, Gilmore RC, Conde CD, Gasmi B, Stein S, Beach M, Pelayo E, Maldonado JO, Lafont BA, Jang SI, Nasir N, Padilla RJ, Murrah VA, Maile R, Lovell W, Wallet SM, Bowman NM, Meinig SL, Wolfgang MC, Choudhury SN, Novotny M, Aevermann BD, Scheuermann RH, Cannon G, Anderson CW, Lee RE, Marchesan JT, Bush M, Freire M, Kimple AJ, Herr DL, Rabin J, Grazioli A, Das S, French BN, Pranzatelli T, Chiorini JA, Kleiner DE, Pittaluga S, Hewitt SM, Burbelo PD, Chertow D, Frank K, Lee J, Boucher RC, Teichmann SA, Warner BM, Byrd KM. SARS-CoV-2 infection of the oral cavity and saliva. Nat Med 2021; 27:892-903. [PMID: 33767405 PMCID: PMC8240394 DOI: 10.1038/s41591-021-01296-8] [Citation(s) in RCA: 414] [Impact Index Per Article: 138.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 02/26/2021] [Indexed: 02/01/2023]
Abstract
Despite signs of infection-including taste loss, dry mouth and mucosal lesions such as ulcerations, enanthema and macules-the involvement of the oral cavity in coronavirus disease 2019 (COVID-19) is poorly understood. To address this, we generated and analyzed two single-cell RNA sequencing datasets of the human minor salivary glands and gingiva (9 samples, 13,824 cells), identifying 50 cell clusters. Using integrated cell normalization and annotation, we classified 34 unique cell subpopulations between glands and gingiva. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) viral entry factors such as ACE2 and TMPRSS members were broadly enriched in epithelial cells of the glands and oral mucosae. Using orthogonal RNA and protein expression assessments, we confirmed SARS-CoV-2 infection in the glands and mucosae. Saliva from SARS-CoV-2-infected individuals harbored epithelial cells exhibiting ACE2 and TMPRSS expression and sustained SARS-CoV-2 infection. Acellular and cellular salivary fractions from asymptomatic individuals were found to transmit SARS-CoV-2 ex vivo. Matched nasopharyngeal and saliva samples displayed distinct viral shedding dynamics, and salivary viral burden correlated with COVID-19 symptoms, including taste loss. Upon recovery, this asymptomatic cohort exhibited sustained salivary IgG antibodies against SARS-CoV-2. Collectively, these data show that the oral cavity is an important site for SARS-CoV-2 infection and implicate saliva as a potential route of SARS-CoV-2 transmission.
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Affiliation(s)
- Ni Huang
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK,These authors contributed equally: Ni Huang, Paola Perez, Takafumi Kato, Yu Mikami
| | - Paola Pérez
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA,These authors contributed equally: Ni Huang, Paola Perez, Takafumi Kato, Yu Mikami
| | - Takafumi Kato
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA,These authors contributed equally: Ni Huang, Paola Perez, Takafumi Kato, Yu Mikami
| | - Yu Mikami
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA,These authors contributed equally: Ni Huang, Paola Perez, Takafumi Kato, Yu Mikami
| | - Kenichi Okuda
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Rodney C. Gilmore
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | | | - Billel Gasmi
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA,Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Sydney Stein
- Emerging Pathogens Section, Department of Critical Care Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, MD, USA
| | - Margaret Beach
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Eileen Pelayo
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Jose O. Maldonado
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA,AAV Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Bernard A. Lafont
- SARS-CoV-2 Virology Core, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Shyh-Ing Jang
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Nadia Nasir
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Ricardo J. Padilla
- Division of Diagnostic Sciences, University of North Carolina Adams School of Dentistry, Chapel Hill, NC, USA
| | - Valerie A. Murrah
- Division of Diagnostic Sciences, University of North Carolina Adams School of Dentistry, Chapel Hill, NC, USA
| | - Robert Maile
- Department of Microbiology & Immunology, University of North Carolina School of Medicine, Chapel Hill, NC, USA,Department of Surgery, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - William Lovell
- Division of Oral & Craniofacial Health Sciences, University of North Carolina Adams School of Dentistry, Chapel Hill, NC, USA
| | - Shannon M. Wallet
- Department of Microbiology & Immunology, University of North Carolina School of Medicine, Chapel Hill, NC, USA,Division of Oral & Craniofacial Health Sciences, University of North Carolina Adams School of Dentistry, Chapel Hill, NC, USA
| | - Natalie M. Bowman
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Suzanne L. Meinig
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Matthew C. Wolfgang
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA,Department of Microbiology & Immunology, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Saibyasachi N. Choudhury
- Department of Genomic Medicine and Infectious Disease, J. Craig Venter Institute, La Jolla, CA, USA
| | - Mark Novotny
- Department of Infectious Disease, J. Craig Venter Institute, La Jolla, CA, USA
| | - Brian D. Aevermann
- Department of Infectious Disease, J. Craig Venter Institute, La Jolla, CA, USA
| | - Richard H. Scheuermann
- Department of Informatics, J. Craig Venter Institute, La Jolla, CA, USA,Department of Pathology, University of California San Diego, La Jolla, CA, USA
| | - Gabrielle Cannon
- The Advanced Analytics Core, Center for Gastrointestinal Biology and Disease, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Carlton W. Anderson
- The Advanced Analytics Core, Center for Gastrointestinal Biology and Disease, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Rhianna E. Lee
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA,Department of Cell Biology & Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Julie T. Marchesan
- Division of Comprehensive Oral Health, University of North Carolina Adams School of Dentistry, Chapel Hill, NC, USA
| | - Mandy Bush
- Division of Comprehensive Oral Health, University of North Carolina Adams School of Dentistry, Chapel Hill, NC, USA
| | - Marcelo Freire
- Department of Genomic Medicine and Infectious Disease, J. Craig Venter Institute, La Jolla, CA, USA,Department of Infectious Disease, J. Craig Venter Institute, La Jolla, CA, USA
| | - Adam J. Kimple
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA,Department of Otolaryngology-Head and Neck Surgery, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Daniel L. Herr
- Department of Shock Trauma Critical Care, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Joseph Rabin
- Department of Surgery, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Alison Grazioli
- Kidney Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Sanchita Das
- Division of Microbiology, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD, USA
| | - Benjamin N. French
- AAV Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Thomas Pranzatelli
- AAV Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - John A. Chiorini
- AAV Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - David E. Kleiner
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Stefania Pittaluga
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Stephen M. Hewitt
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Peter D. Burbelo
- AAV Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Daniel Chertow
- Emerging Pathogens Section, Department of Critical Care Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, MD, USA
| | | | | | - Karen Frank
- Division of Microbiology, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD, USA
| | - Janice Lee
- Craniofacial Anomalies & Regeneration Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Richard C. Boucher
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sarah A. Teichmann
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK,Department of Physics, Cavendish Laboratory, Cambridge, UK
| | - Blake M. Warner
- Salivary Disorders Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA,These authors jointly supervised this work: Blake M. Warner, Kevin M. Byrd,Correspondence and requests for materials should be addressed to B.M.W. or K.M.B. ;
| | - Kevin M. Byrd
- Division of Oral & Craniofacial Health Sciences, University of North Carolina Adams School of Dentistry, Chapel Hill, NC, USA,Department of Innovation & Technology Research, ADA Science & Research Institute, Gaithersburg, MD, USA,These authors jointly supervised this work: Blake M. Warner, Kevin M. Byrd,Correspondence and requests for materials should be addressed to B.M.W. or K.M.B. ;
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6
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Di Pasquale G, Perez Riveros P, Tora M, Sheikh T, Son A, Teos L, Grewe B, Swaim WD, Afione S, Zheng C, Jang SI, Shitara A, Alevizos I, Weigert R, Chiorini JA. Transduction of Salivary Gland Acinar Cells with a Novel AAV Vector 44.9. Mol Ther Methods Clin Dev 2020; 19:459-466. [PMID: 33294494 PMCID: PMC7689275 DOI: 10.1016/j.omtm.2020.10.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 10/09/2020] [Indexed: 11/20/2022]
Abstract
The loss of salivary gland function caused by radiation therapy of the head and neck or autoimmune disease such as Sjögren's syndrome is a serious condition that affects a patient's quality of life. Due to the combined exocrine and endocrine functions of the salivary gland, gene transfer to the salivary glands holds the potential for developing therapies for disorders of the salivary gland and the expression of therapeutic proteins via the exocrine pathway to the mouth, upper gastrointestinal tract, or endocrine pathway, systemically, into the blood. Recent clinical success with viral vector-mediated gene transfer for the treatment of irradiation-induced damage to the salivary glands has highlighted the need for the development of novel vectors with acinar cell tropism able to result in stable long-term transduction. Previous studies with adeno-associated virus (AAV) focused on the submandibular gland and reported mostly ductal cell transduction. In this study, we have screened AAV vectors for acinar cell tropism in the parotid gland utilizing membrane-tomato floxed membrane-GFP transgenic mice to screen CRE recombinase encoding AAV vectors of different clades to rapidly identify capsid isolates able to transduce salivary gland acinar cells. We determined that AAVRh10 and a novel isolate found as a contaminant of a laboratory stock of simian adenovirus SV15, AAV44.9, are both able to transduce parotid and sublingual acinar cells. Persistence and localization of transduction of these AAVs were tested using vectors encoding firefly luciferase, which was detected 6 months after vector administration. Most luciferase expression was localized to the salivary gland compared to that of distal organs. Transduction resulted in robust secretion of recombinant protein in both blood and saliva. Transduction was species specific, with AAVRh10 having stronger transduction activity in rats compared with AAV44.9 or AAV2 but weaker in human primary salivary gland cells. This work demonstrates efficient transduction of parotid acinar cells by AAV that resulted in secretion of recombinant protein in both serum and saliva.
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Affiliation(s)
- Giovanni Di Pasquale
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Paola Perez Riveros
- Salivary Gland Biology and Disorder Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Muhibullah Tora
- Intracellular Membrane Trafficking Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Tayyab Sheikh
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Aran Son
- Epithelial Signaling and Transport Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Leyla Teos
- Secretory Physiology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Brigitte Grewe
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - William D. Swaim
- Salivary Gland Biology and Disorder Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Sandra Afione
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Changyu Zheng
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Shyh-Ing Jang
- Salivary Gland Biology and Disorder Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Akiko Shitara
- Intracellular Membrane Trafficking Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ilias Alevizos
- Sjögren’s Syndrome and Salivary Gland Dysfunction Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Roberto Weigert
- Intracellular Membrane Trafficking Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - John A. Chiorini
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
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7
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Tanaka T, Warner BM, Odani T, Ji Y, Mo YQ, Nakamura H, Jang SI, Yin H, Michael DG, Hirata N, Suizu F, Ishigaki S, Oliveira FR, Motta ACF, Ribeiro-Silva A, Rocha EM, Atsumi T, Noguchi M, Chiorini JA. LAMP3 induces apoptosis and autoantigen release in Sjögren's syndrome patients. Sci Rep 2020; 10:15169. [PMID: 32939030 PMCID: PMC7494869 DOI: 10.1038/s41598-020-71669-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 08/10/2020] [Indexed: 12/16/2022] Open
Abstract
Primary Sjögren's syndrome (pSS) is a complex autoimmune disease characterized by dysfunction of secretory epithelia with only palliative therapy. Patients present with a constellation of symptoms, and the diversity of symptomatic presentation has made it difficult to understand the underlying disease mechanisms. In this study, aggregation of unbiased transcriptome profiling data sets of minor salivary gland biopsies from controls and Sjögren's syndrome patients identified increased expression of lysosome-associated membrane protein 3 (LAMP3/CD208/DC-LAMP) in a subset of Sjögren's syndrome cases. Stratification of patients based on their clinical characteristics suggested an association between increased LAMP3 expression and the presence of serum autoantibodies including anti-Ro/SSA, anti-La/SSB, anti-nuclear antibodies. In vitro studies demonstrated that LAMP3 expression induces epithelial cell dysfunction leading to apoptosis. Interestingly, LAMP3 expression resulted in the accumulation and release of intracellular TRIM21 (one component of SSA), La (SSB), and α-fodrin protein, common autoantigens in Sjögren's syndrome, via extracellular vesicles in an apoptosis-independent mechanism. This study defines a clear role for LAMP3 in the initiation of apoptosis and an independent pathway for the extracellular release of known autoantigens leading to the formation of autoantibodies associated with this disease.ClinicalTrials.gov Identifier: NCT00001196, NCT00001390, NCT02327884.
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Affiliation(s)
- Tsutomu Tanaka
- National Institute of Dental and Craniofacial Research, National Institutes of Health, NIH 10 Center Dr., Bethesda, MD, 20892, USA
| | - Blake M Warner
- National Institute of Dental and Craniofacial Research, National Institutes of Health, NIH 10 Center Dr., Bethesda, MD, 20892, USA
| | - Toshio Odani
- National Institute of Dental and Craniofacial Research, National Institutes of Health, NIH 10 Center Dr., Bethesda, MD, 20892, USA
| | - Youngmi Ji
- National Institute of Dental and Craniofacial Research, National Institutes of Health, NIH 10 Center Dr., Bethesda, MD, 20892, USA
| | - Ying-Qian Mo
- National Institute of Dental and Craniofacial Research, National Institutes of Health, NIH 10 Center Dr., Bethesda, MD, 20892, USA
| | - Hiroyuki Nakamura
- National Institute of Dental and Craniofacial Research, National Institutes of Health, NIH 10 Center Dr., Bethesda, MD, 20892, USA
| | - Shyh-Ing Jang
- National Institute of Dental and Craniofacial Research, National Institutes of Health, NIH 10 Center Dr., Bethesda, MD, 20892, USA
| | - Hongen Yin
- National Institute of Dental and Craniofacial Research, National Institutes of Health, NIH 10 Center Dr., Bethesda, MD, 20892, USA
| | - Drew G Michael
- National Institute of Dental and Craniofacial Research, National Institutes of Health, NIH 10 Center Dr., Bethesda, MD, 20892, USA
| | - Noriyuki Hirata
- Division of Cancer Biology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan
| | - Futoshi Suizu
- Division of Cancer Biology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan
| | - Satoko Ishigaki
- Division of Cancer Biology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan
| | - Fabiola Reis Oliveira
- Department of Clinical Medicine, Ribeirão Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Ana Carolina F Motta
- Department of Stomatology, Public Health and Forensic Dentistry, School of Dentistry of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Alfredo Ribeiro-Silva
- Department of Pathology and Legal Medicine, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Eduardo M Rocha
- Department of Ophthalmology, Otorhinolaryngology, Head and Neck Surgery, Ribeirão Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Tatsuya Atsumi
- Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masayuki Noguchi
- Division of Cancer Biology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan
| | - John A Chiorini
- National Institute of Dental and Craniofacial Research, National Institutes of Health, NIH 10 Center Dr., Bethesda, MD, 20892, USA.
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8
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Kang SH, Joo JH, Jang SI, Park EC. Association of exposure to secondhand smoke at home with early age at menarche in South Korea. Public Health 2020; 185:144-149. [PMID: 32622222 DOI: 10.1016/j.puhe.2020.04.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 02/13/2020] [Accepted: 04/30/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The secular trend in age at menarche (AAM) has declined both worldwide and in Korea. Early AAM is associated with the risk of several diseases, reproductive capacity, and psychological problems. We aimed to investigate the relationship between secondhand smoke (SHS) exposure at home and early puberty onset using AAM in Korean adolescents. STUDY DESIGN This is a retrospective cross-sectional study. METHODS This study used data from the Korea Youth Risk Behavior Web-based Survey 2014-2015. We used the mean AAM (12.2 years) as a determinant of early AAM. After the exclusion of girls without menarche or who did not respond, the total population comprised 63,618 participants. We categorized AAM as 'early' and 'average or late.' Adolescents with SHS exposure were assigned to the 'never exposed,' 'light exposure,' and 'heavy exposure' groups. Multiple logistic regression analyses were performed. RESULTS We observed a positive association, approximately 1.12 times, between early AAM and high SHS exposure (odds ratio [OR], 1.12; 95% confidence interval [CI], 1.05-1.19). Girls who started smoking before the age of 12 years (OR, 1.68; 95% CI, 1.41-1.99) showed a stronger association with early AAM than non-smokers. Active smoking showed a stronger association with early AAM. Never smokers with high SHS exposure at home were 1.13 times likelier to have an early AAM (OR, 1.13; 95% CI, 1.05-1.22) than those without SHS exposure. CONCLUSIONS In addition to active smoking, SHS may also be a risk factor for early AAM. Education aimed at active and secondhand smoking prevention is needed to protect children against early AAM.
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Affiliation(s)
- S H Kang
- Department of Public Health, Graduate School, Yonsei University, Seoul, Republic of Korea; Institute of Health Services Research, Yonsei University, Seoul, Republic of Korea
| | - J H Joo
- Department of Public Health, Graduate School, Yonsei University, Seoul, Republic of Korea; Institute of Health Services Research, Yonsei University, Seoul, Republic of Korea
| | - S I Jang
- Institute of Health Services Research, Yonsei University, Seoul, Republic of Korea; Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - E C Park
- Institute of Health Services Research, Yonsei University, Seoul, Republic of Korea; Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
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9
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Cortes-Troncoso J, Jang SI, Perez P, Hidalgo J, Ikeuchi T, Greenwell-Wild T, Warner BM, Moutsopoulos NM, Alevizos I. T cell exosome-derived miR-142-3p impairs glandular cell function in Sjögren's syndrome. JCI Insight 2020; 5:133497. [PMID: 32376798 DOI: 10.1172/jci.insight.133497] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 04/08/2020] [Indexed: 11/17/2022] Open
Abstract
Sjögren's syndrome (SS) is a systemic autoimmune disease that mainly affects exocrine salivary and lacrimal glands. Local inflammation in the glands is thought to trigger glandular dysfunction and symptoms of dryness. However, the mechanisms underlying these processes are incompletely understood. Our work suggests T cell exosome-derived miR-142-3p as a pathogenic driver of immunopathology in SS. We first document miR-142-3p expression in the salivary glands of patients with SS, both in epithelial gland cells and within T cells of the inflammatory infiltrate, but not in healthy volunteers. Next, we show that activated T cells secreted exosomes containing miR-142-3p, which transferred into glandular cells. Finally, we uncover a functional role of miR-142-3p-containing exosomes in glandular cell dysfunction. We find that miR-142-3p targets key elements of intracellular Ca2+ signaling and cAMP production - sarco(endo)plasmic reticulum Ca2+ ATPase 2b (SERCA2B), ryanodine receptor 2 (RyR2), and adenylate cyclase 9 (AC9) - leading to restricted cAMP production, altered calcium signaling, and decreased protein production from salivary gland cells. Our work provides evidence for a functional role of the miR-142-3p in SS pathogenesis and promotes the concept that T cell activation may directly impair epithelial cell function through secretion of miRNA-containing exosomes.
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Affiliation(s)
- Juan Cortes-Troncoso
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit.,Oral Immunity and Inflammation Section, and
| | - Shyh-Ing Jang
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit
| | - Paola Perez
- Adeno-Associated Virus Biology Section, National Institute of Dental and Craniofacial Research (NIDCR), NIH, Bethesda, Maryland, USA
| | - Jorge Hidalgo
- Program of Physiology and Biophysics, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago, Chile
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10
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Abstract
OBJECTIVE Many people experience orthopaedic problems (OPPs), such as knee joint pain, hip joint pain, low back pain, and knee stiffness in their lifetimes. OPPs can impair lower extremity function, cause depression, and worsen quality of life. The aim of this study was to investigate the association between sedentary time (SDT) and OPPs. DESIGN Retrospective cross-sectional study. SETTING This study used data from the 2014-2015 Korea National Health and Nutrition Examination Survey. Survey participants with previous or current osteoarthritis or rheumatoid arthritis, as diagnosed by a doctor, were excluded. OPPs were defined as knee joint pain, hip joint pain, low back pain, and knee stiffness. The cut-off value for SDT was 7.5 hours/day. The study population comprised 3,671 people (1,856 men and 1,815 women), all of whom were ≥50 years-old. Multiple logistic regression analyses were performed. RESULTS A total of 328 men (17.7%) and 519 women (28.6%) had OPPs. Men with SDTs ≥7.5 hours had a greater risk of OPPs than did men with SDTs <7.5 hours (odds ratio [OR], 1.45; 95% confidence interval [CI], 1.08-1.93). A pink-collar job, physical inactivity during leisure time, and passive (e.g. riding in a car or train) versus active (e.g. walking or riding a bicycle) transportation predicted OPPs in men with SDTs ≥7.5 hours. SDT was a risk factor for knee joint pain in men (OR, 1.80; 95% CI, 1.11-2.92) and hip joint pain in women (OR, 2.05; 95% CI, 1.35-3.11). CONCLUSIONS In men, prolonged SDT is a risk factor for OPPs. More physical activity programmes should be launched at the community level for people ≥50 years-old to reduce the occurrence of OPPs.
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Affiliation(s)
- S H Kang
- Sung-In Jang, MD, Department of preventive Medicine and Institute of Health Services Research, Yonsei University College of Medicine, 50 Yonsei-to, Seodaemun-gu, Seoul 03722, Republic of Korea, Tel: +82-2-2228-1863; E-mail: ; Fax: +82-2-392-8133
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11
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Jang SI, Tandon M, Teos L, Zheng C, Warner BM, Alevizos I. Dual function of miR-1248 links interferon induction and calcium signaling defects in Sjögren's syndrome. EBioMedicine 2019; 48:526-538. [PMID: 31597594 PMCID: PMC6838412 DOI: 10.1016/j.ebiom.2019.09.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 09/05/2019] [Accepted: 09/06/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Sjögren's syndrome (SS) is one of the most common autoimmune disorders leading to exocrine gland dysfunction. Both immune-dependent processes - like Type I Interferon (IFN) signaling and immune-independent processes - such as calcium signaling in epithelial cells - contribute to disease pathophysiology. However, a mechanistic link between these processes has not been demonstrated. METHODS Primary human salivary gland cells were used to evaluate the differential expression of miRNAs with smRNA-seq in primary epithelial cells culture and digital PCR was conducted in SS human salivary glands (SG) biopsies to verify the results. With siRNA screening and pull-down assays to establish the role of miRNA in IFN activation. FINDINGS Activation of IFN-β by miR-1248 is through the direct association with both RIG-I and AGO2. Further functional studies establish a unique dual functional role of miR-1248 in phSG cells: i) activation of the RIG-I pathway by acting as ligand of this sensor leading to IFN production and ii) regulation of the expression of mRNAs through the canonical microRNA function. Importantly, ITPR3, a key component of calcium signaling in epithelial cells, that has previously shown to be downregulated in SS SG, was directly targeted and downregulated by miR-1248, inducing the same functional calcium signaling changes as observed in SS SGs. INTERPRETATION Identification of the first endogenous mammalian microRNA that binds to RIG-I inducing IFN production but also demonstrate a novel pathophysiological underlying mechanism in which miR-1248 overexpression links two major pathways associated with SS, namely activation of IFN production with modulation of calcium signaling. Together, these findings suggest a unifying hypothesis for the immune-independent and -dependent processes contributing to the pathogenesis of SS. FUND: This research was supported by the Intramural Research Program of the National Institutes of Health (NIH), National Institute of Dental and Craniofacial Research (NIDCR).
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Affiliation(s)
- Shyh-Ing Jang
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Mayank Tandon
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Leyla Teos
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - ChangYu Zheng
- Molecular Physiology and Therapeutics, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Blake M Warner
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - Ilias Alevizos
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA.
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12
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Binmadi NO, Basile JR, Perez P, Gallo A, Tandon M, Elias W, Jang SI, Alevizos I. miRNA expression profile of mucoepidermoid carcinoma. Oral Dis 2018; 24:537-543. [PMID: 29095552 DOI: 10.1111/odi.12800] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 09/21/2017] [Accepted: 10/22/2017] [Indexed: 11/30/2022]
Abstract
OBJECTIVES MicroRNAs (miRNAs) are single-stranded RNAs that have been implicated in cancer initiation and progression and act as tumour suppressors or oncogenes. In this study, miRNA profiling was conducted on the most frequent malignancy of salivary glands, mucoepidermoid carcinoma (MEC), in comparison with normal tissues. MATERIALS AND METHODS The TaqMan Human miRNA Cards Array was used for the miRNA profiling of MEC and normal tissues. To validate the differentially expressed miRNAs in MEC, we used real-time PCR (qRT-PCR). RESULTS miR-302a was the most significantly increased miRNA in cancer tissues (p < .05). Here, we demonstrate that the upregulation of miR-302a expression in SGT cell lines induced cancer cell invasion in vitro. CONCLUSIONS These promising results suggest the need for further studies to establish mir-302a as a marker of invasion and aggressiveness in MEC.
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Affiliation(s)
- N O Binmadi
- Department of Oral Diagnostic Sciences, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - J R Basile
- Department of Oncology and Diagnostic Sciences, University of Maryland Dental School, Baltimore, MD, USA.,Greenebaum Cancer Centre, Baltimore, MD, USA
| | - P Perez
- Molecular Physiology and Therapeutics branch, Sjögren's Syndrome and Salivary Gland Dysfunction Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - A Gallo
- Department of Laboratory Medicine and Advanced Biotechnologies, IRCCS-ISMETT (Istituto Mediterraneo peri Trapiantie Terapie ad alta specializzazione), Palermo, Italy
| | - M Tandon
- Molecular Physiology and Therapeutics branch, Sjögren's Syndrome and Salivary Gland Dysfunction Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - W Elias
- Department of Oral Diagnostic Sciences, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - S I Jang
- Molecular Physiology and Therapeutics branch, Sjögren's Syndrome and Salivary Gland Dysfunction Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - I Alevizos
- Molecular Physiology and Therapeutics branch, Sjögren's Syndrome and Salivary Gland Dysfunction Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
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13
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Jang SI, Ong HL, Liu X, Alevizos I, Ambudkar IS. Up-regulation of Store-operated Ca2+ Entry and Nuclear Factor of Activated T Cells Promote the Acinar Phenotype of the Primary Human Salivary Gland Cells. J Biol Chem 2016; 291:8709-20. [PMID: 26903518 DOI: 10.1074/jbc.m115.701607] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Indexed: 01/12/2023] Open
Abstract
The signaling pathways involved in the generation and maintenance of exocrine gland acinar cells have not yet been established. Primary human salivary gland epithelial cells, derived from salivary gland biopsies, acquired an acinar-like phenotype when the [Ca(2+)] in the serum-free medium (keratinocyte growth medium, KGM) was increased from 0.05 mm (KGM-L) to 1.2 mm (KGM-H). Here we examined the mechanism underlying this Ca(2+)-dependent generation of the acinar cell phenotype. Compared with cells in KGM-L, those in KGM-H display enhancement of Orai1, STIM1, STIM2, and nuclear factor of activated T cells 1 (NFAT1) expression together with an increase in store-operated Ca(2+) entry (SOCE), SOCE-dependent nuclear translocation of pGFP-NFAT1, and NFAT-dependent but not NFκB-dependent gene expression. Importantly, AQP5, an acinar-specific protein critical for function, is up-regulated in KGM-H via SOCE/NFAT-dependent gene expression. We identified critical NFAT binding motifs in the AQP5 promoter that are involved in Ca(2+)-dependent up-regulation of AQP5. These important findings reveal that the Ca(2+)-induced switch of salivary epithelial cells to an acinar-like phenotype involves remodeling of SOCE and NFAT signaling, which together control the expression of proteins critically relevant for acinar cell function. Our data provide a novel strategy for generating and maintaining acinar cells in culture.
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Affiliation(s)
- Shyh-Ing Jang
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, Molecular Physiology and Therapeutics Branch, NIDCR/National Institutes of Health, Bethesda, Maryland 20892
| | | | - Xibao Liu
- From the Secretory and Physiology Section and
| | - Ilias Alevizos
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, Molecular Physiology and Therapeutics Branch, NIDCR/National Institutes of Health, Bethesda, Maryland 20892
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Zheng C, Baum BJ, Liu X, Goldsmith CM, Perez P, Jang SI, Cotrim AP, McCullagh L, Ambudkar IS, Alevizos I. 325. Persistence of hAQP1 Expression in Human Salivary Gland Cells Following AdhAQP1 Transduction Is Associated With a Lack of Methylation of hCMV Promoter. Mol Ther 2015. [DOI: 10.1016/s1525-0016(16)33934-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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15
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Jang SI, Ong HL, Gallo A, Liu X, Illei G, Alevizos I. Establishment of functional acinar-like cultures from human salivary glands. J Dent Res 2014; 94:304-11. [PMID: 25416669 DOI: 10.1177/0022034514559251] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Disorders of human salivary glands resulting from therapeutic radiation treatment for head and neck cancers or from the autoimmune disease Sjögren syndrome (SS) frequently result in the reduction or complete loss of saliva secretion. Such irreversible dysfunction of the salivary glands is due to the impairment of acinar cells, the major glandular cells of protein, salt secretion, and fluid movement. Availability of primary epithelial cells from human salivary gland tissue is critical for studying the underlying mechanisms of these irreversible disorders. We applied 2 culture system techniques on human minor salivary gland epithelial cells (phmSG) and optimized the growth conditions to achieve the maintenance of phmSG in an acinar-like phenotype. These phmSG cells exhibited progenitor cell markers (keratin 5 and nanog) as well as acinar-specific markers-namely, α-amylase, cystatin C, TMEM16A, and NKCC1. Importantly, with an increase of the calcium concentration in the growth medium, these phmSG cells were further promoted to acinar-like cells in vitro, as indicated by an increase in AQP5 expression. In addition, these phmSG cells also demonstrated functional calcium mobilization, formation of epithelial monolayer with high transepithelial electrical resistance (TER), and polarized secretion of α-amylase secretion after β-adrenergic receptor stimulation. Taken together, suitable growth conditions have been established to isolate and support culture of acinar-like cells from the human salivary gland. These primary epithelial cells can be useful for study of molecular mechanisms involved in regulating the function of acinar cells and in the loss of salivary gland function in patients.
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Affiliation(s)
- S I Jang
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - H L Ong
- Secretory and Physiology Section, Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - A Gallo
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - X Liu
- Secretory and Physiology Section, Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - G Illei
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - I Alevizos
- Sjögren's Syndrome and Salivary Gland Dysfunction Unit, Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
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Lee KW, Lillehoj HS, Jang SI, Lee SH, Bautista DA, Siragusa GR. Effect of Bacillus Subtilis-based Direct-fed Microbials on Immune Status in Broiler Chickens Raised on Fresh or Used Litter. Asian-Australas J Anim Sci 2014; 26:1592-7. [PMID: 25049746 PMCID: PMC4093815 DOI: 10.5713/ajas.2013.13178] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 06/18/2013] [Accepted: 05/06/2013] [Indexed: 01/11/2023]
Abstract
Type of dietary direct-fed microbials (DFMs) or poultry litter could directly influence the composition of gut microbiota. Gut microbiota plays an important role in shaping the developing immune system and maintaining the homeostasis of the mature immune system in mammal and chickens. The present study was carried out to investigate the interaction among litter, DFMs and immunity in broiler chickens exposed to a field-simulated environment. Immune status of broiler chickens was assessed by serum antibodies against Eimeria spp. and Clostridium spp. and intestinal cytokine mRNA expression. The current experimental design had a 3 ×2 factorial arrangement of treatments with three types of litter, i.e., fresh litter or used litter that was obtained from a farm with no disease outbreak (used litter) or a farm with history of a gangrenous dermatitis outbreak (GD litter), and two dietary treatments with or without DFMs. It was found that either DFM addition or type of litter significantly affected anticoccidial antibody levels of broiler chickens at d 42. In general, dietary DFMs increased the anticoccidial antibodies in the fresh-litter raised chickens, but lowered the levels in the GD-litter raised chickens. Serum antibodies against Clostridium perfringens α-toxin were significantly (p<0.05) higher in chickens raised on GD litter compared with those raised on fresh litter. Cytokine mRNA expression was significantly (p<0.05) altered by either the type of litter or DFMs. Of interest, dietary DFMs lowered interferon-γ, interleukin 1beta, and CXCLi2 cytokine mRNA expression in chickens raised on fresh litter but increased them in GD-litter raised chickens. In conclusion, dietary DFMs modulate various immune parameters of broiler chickens, but the DFM-mediated effects were dependent upon the type of litter on which chickens were raised.
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Affiliation(s)
- K W Lee
- Animal Biosciences and Biotechnology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, USDA, Beltsville, MD 20705, USA
| | - H S Lillehoj
- Animal Biosciences and Biotechnology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, USDA, Beltsville, MD 20705, USA
| | - S I Jang
- Animal Biosciences and Biotechnology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, USDA, Beltsville, MD 20705, USA
| | - S H Lee
- Animal Biosciences and Biotechnology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, USDA, Beltsville, MD 20705, USA
| | - D A Bautista
- Animal Biosciences and Biotechnology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, USDA, Beltsville, MD 20705, USA
| | - G R Siragusa
- Animal Biosciences and Biotechnology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, USDA, Beltsville, MD 20705, USA
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17
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Lee KW, Lillehoj HS, Lee SH, Jang SI, Park MS, Bautista DA, Ritter GD, Hong YH, Siragusa GR, Lillehoj EP. Effect of dietary antimicrobials on immune status in broiler chickens. Asian-Australas J Anim Sci 2014; 25:382-92. [PMID: 25049577 PMCID: PMC4092964 DOI: 10.5713/ajas.2011.11259] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 11/07/2011] [Accepted: 11/02/2011] [Indexed: 12/16/2022]
Abstract
This study evaluated the effects of dietary anticoccidial drugs plus antibiotic growth promoters (AGPs) on parameters of immunity in commercial broiler chickens. Day-old chicks were raised on used litter from a farm with endemic gangrenous dermatitis to simulate natural pathogen exposure and provided with diets containing decoquinate (DECX) or monensin (COBN) as anticoccidials plus bacitracin methylene disalicylate and roxarsone as AGPs. As a negative control, the chickens were fed with a non-supplemented diet. Immune parameters examined were concanavalin A (ConA)-stimulated spleen cell proliferation, intestine intraepithelial lymphocyte (IEL) and spleen cell subpopulations, and cytokine/chemokine mRNA levels in IELs and spleen cells. ConA-induced proliferation was decreased at 14 d post-hatch in DECX-treated chickens, and increased at 25 and 43 d in COBN-treated animals, compared with untreated controls. In DECX-treated birds, increased percentages of MHC2(+) and CD4(+) IELS were detected at 14 d, but decreased percentages of these cells were seen at 43 d, compared with untreated controls, while increased TCR2(+) IELs were evident at the latter time. Dietary COBN was associated with decreased fractions of MHC2(+) and CD4(+) IELs and reduced percentages of MHC2(+), BU1(+), and TCR1(+) spleen cells compared with controls. The levels of transcripts for interleukin-4 (IL-4), IL-6, IL-17F, IL-13, CXCLi2, interferon-γ (IFN-γ), and transforming growth factorβ4 were elevated in IELs, and those for IL-13, IL-17D, CXCLi2, and IFN-γ were increased in spleen cells, of DECX- and/or COBN-treated chickens compared with untreated controls. By contrast, IL-2 and IL-12 mRNAs in IELs, and IL-4, IL-12, and IL-17F transcripts in spleen cells, were decreased in DECX- and/or COBN-treated chickens compared with controls. These results suggest that DECX or COBN, in combination with bacitracin and roxarsone, modulate the development of the chicken post-hatch immune system.
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Affiliation(s)
- K W Lee
- Lasher Poultry Diagnostic Laboratory, University of Delaware, Georgetown, DE 16483, USA
| | - H S Lillehoj
- Lasher Poultry Diagnostic Laboratory, University of Delaware, Georgetown, DE 16483, USA
| | - S H Lee
- Lasher Poultry Diagnostic Laboratory, University of Delaware, Georgetown, DE 16483, USA
| | - S I Jang
- Lasher Poultry Diagnostic Laboratory, University of Delaware, Georgetown, DE 16483, USA
| | - M S Park
- Lasher Poultry Diagnostic Laboratory, University of Delaware, Georgetown, DE 16483, USA
| | - D A Bautista
- Lasher Poultry Diagnostic Laboratory, University of Delaware, Georgetown, DE 16483, USA
| | - G D Ritter
- Mountaire Farms Inc., Millsboro, DE 19966, USA
| | - Y H Hong
- Department of Animal Science and Technology, Chung-Ang University, Anseong 456-756, Korea
| | - G R Siragusa
- Danisco, W227 N752 Westmound Drive, Waukesha, WI 53186, USA
| | - E P Lillehoj
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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Lee SH, Lillehoj HS, Jang SI, Jeong MS, Xu SZ, Kim JB, Park HJ, Kim HR, Lillehoj EP, Bravo DM. Effects of in ovo injection with selenium on immune and antioxidant responses during experimental necrotic enteritis in broiler chickens. Poult Sci 2014; 93:1113-21. [PMID: 24795303 DOI: 10.3382/ps.2013-03770] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
This study was conducted to investigate the effects of in ovo injection of Se on modulating the immune system and antioxidant responses in broiler chickens with experimental necrotic enteritis. Broiler eggs were injected at 18 d of embryo age with either 100 μL of PBS alone or sodium selenite (Na2SeO3) in PBS, providing 0 (SS0), 10 (SS10), or 20 (SS20) μg of Se/egg. At 14 d posthatch, PBS-treated and uninfected chickens were kept as the control group, whereas the remaining chickens were orally infected with 1.0 × 10(4) sporulated oocysts of Eimeria maxima (SS0, SS10, SS20). At 18 d posthatch, E. maxima-infected chickens were orally infected with 1.0 × 10(9) cfu of Clostridium perfringens. Infected control SS0 group showed significantly decreased BW compared with the uninfected control. However, SS20 group showed significantly increased BW compared with the infected control SS0 group, whereas the BW were similar among uninfected control and infected SS10 and SS20 groups. The SS10 group showed significantly lower intestinal lesions compared with the SS0 group, and oocyst production was decreased in both SS10 and SS20 groups. Serum malondialdehyde level and catalase activity were also decreased in both SS10 and SS20 groups, whereas the superoxide dismutase level was significantly lower in the SS10 group compared with the SS0 group. The SS20 group showed significantly higher levels of transcripts for IL-1β and IL-6 in intestine, and SS10 and SS20 groups had higher levels of transcripts for IL-8 and inducible nitric oxide synthase expression and decreased glutathione peroxidase 7 mRNA levels compared with the SS0 group. The SS10 and SS20 groups also showed increased serum antibody levels to C. perfringens α-toxin and NetB toxin compared with the SS0 group. These collective results suggest that the injection of Se into the amniotic cavity of developing eggs may be beneficial for enhancing immune and antioxidant responses in the hatched chickens exposed to the necrotic enteritis-causing pathogens.
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Affiliation(s)
- S H Lee
- Animal Biosciences and Biotechnology Laboratory, Beltsville Agricultural Research Center, USDA-ARS, Beltsville, MD 20705
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Han JW, Jang SI, Ma DW, Yoon SO, Lee DK. Invaginated ampulla of Vater in synchronous malignant intraductal papillary mucinous neoplasm of the pancreas and common bile duct cancer. Endoscopy 2013; 45 Suppl 2 UCTN:E25-6. [PMID: 23468151 DOI: 10.1055/s-0032-1326106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- J W Han
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Perez P, Jang SI, Alevizos I. Emerging landscape of non-coding RNAs in oral health and disease. Oral Dis 2013; 20:226-35. [PMID: 23781896 DOI: 10.1111/odi.12142] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 05/08/2013] [Accepted: 05/09/2013] [Indexed: 12/20/2022]
Abstract
The world of non-coding RNAs has only recently started being discovered. For the past 40 years, coding genes, mRNA, and proteins have been the center of cellular and molecular biology, and pathologic alterations were attributed to either the aberration of gene sequence or altered promoter activity. It was only after the completion of the human genome sequence that the scientific community started seriously wondering why only a very small portion of the genome corresponded to protein-coding genes. New technologies such as the whole-genome and whole-transcriptome sequencing demonstrated that at least 90% of the genome is actively transcribed. The identification and cataloguing of multiple kinds of non-coding RNA (ncRNA) have exponentially increased, and it is now widely accepted that ncRNAs play major biological roles in cellular physiology, development, metabolism, and are also implicated in a variety of diseases. The aim of this review is to describe the two major classes (long and short forms) of non-coding RNAs and describe their subclasses in terms of function and their relevance and potential in oral diseases.
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Affiliation(s)
- P Perez
- Sjögren's Clinic, Molecular Physiology & Therapeutics, National Institute of Dental and Craniofacial Research, Bethesda, MD, USA
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21
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Zhou H, Hasni SA, Perez P, Tandon M, Jang SI, Zheng C, Kopp JB, Austin H, Balow JE, Alevizos I, Illei GG. miR-150 promotes renal fibrosis in lupus nephritis by downregulating SOCS1. J Am Soc Nephrol 2013; 24:1073-87. [PMID: 23723424 DOI: 10.1681/asn.2012080849] [Citation(s) in RCA: 121] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
MicroRNAs (miRs) seem to mediate renal fibrosis in several renal diseases, with some miRs having profibrotic effects and others having opposing effects. Although differential expression of certain miRs has been described in lupus nephritis, it is unknown whether miRs contribute to fibrosis or could serve as biomarkers of specific histologic manifestations of lupus nephritis. Here, we compared miR expression in kidney biopsies from patients with lupus nephritis and identified miR-150 as the most differentially expressed miR in kidneys with high chronicity (chronicity index [CI] ≥ 4); miR-150 positively correlated with chronicity scores and the expression of profibrotic proteins. Overexpression of miR-150 significantly reduced expression of the antifibrotic protein suppressor of cytokine signaling 1 (SOCS1) and upregulated profibrotic proteins in both proximal tubular and mesangial cells. Directly targeting SOCS1 with a small interfering RNA produced similar results. Furthermore, TGF-β1 induced miR-150 expression, decreased SOCS1, and increased profibrotic proteins in proximal tubular cells and podocytes; a miR-150 inhibitor reversed these changes, suggesting that the profibrotic effects of TGF-β1 are, at least in part, mediated by miR-150. Consistent with these in vitro observations, biopsies with high miR-150 and high CI exhibited substantial expression of TGF-β1, reduced SOCS1, and an increase in profibrotic proteins. In summary, miR-150 is a promising quantitative renal biomarker of kidney injury in lupus nephritis. Our results suggest that miR-150 promotes renal fibrosis by increasing profibrotic molecules through downregulation of SOCS1.
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Affiliation(s)
- Hua Zhou
- Sjögren's Syndrome Clinic, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland 20892-1190, USA
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Ong HL, Jang SI, Ambudkar IS. Distinct contributions of Orai1 and TRPC1 to agonist-induced [Ca(2+)](i) signals determine specificity of Ca(2+)-dependent gene expression. PLoS One 2012; 7:e47146. [PMID: 23115638 PMCID: PMC3480383 DOI: 10.1371/journal.pone.0047146] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 09/10/2012] [Indexed: 12/30/2022] Open
Abstract
Regulation of critical cellular functions, including Ca2+-dependent gene expression, is determined by the temporal and spatial aspects of agonist-induced Ca2+ signals. Stimulation of cells with physiological concentrations of agonists trigger increases [Ca2+]i due to intracellular Ca2+ release and Ca2+ influx. While Orai1-STIM1 channels account for agonist-stimulated [Ca2+]i increase as well as activation of NFAT in cells such as lymphocytes, RBL and mast cells, both Orai1-STIM1 and TRPC1-STIM1 channels contribute to [Ca2+]i increases in human submandibular gland (HSG) cells. However, only Orai1-mediated Ca2+ entry regulates the activation of NFAT in HSG cells. Since both TRPC1 and Orai1 are activated following internal Ca2+ store depletion in these cells, it is not clear how the cells decode individual Ca2+ signals generated by the two channels for the regulation of specific cellular functions. Here we have examined the contributions of Orai1 and TRPC1 to carbachol (CCh)-induced [Ca2+]i signals and activation of NFAT in single cells. We report that Orai1-mediated Ca2+ entry generates [Ca2+]i oscillations at different [CCh], ranging from very low to high. In contrast, TRPC1-mediated Ca2+ entry generates sustained [Ca2+]i elevation at high [CCh] and contributes to frequency of [Ca2+]i oscillations at lower [agonist]. More importantly, the two channels are coupled to activation of distinct Ca2+ dependent gene expression pathways, consistent with the different patterns of [Ca2+]i signals mediated by them. Nuclear translocation of NFAT and NFAT-dependent gene expression display “all-or-none” activation that is exclusively driven by local [Ca2+]i generated by Orai1, independent of global [Ca2+]i changes or TRPC1-mediated Ca2+ entry. In contrast, Ca2+ entry via TRPC1 primarily regulates NFκB-mediated gene expression. Together, these findings reveal that Orai1 and TRPC1 mediate distinct local and global Ca2+ signals following agonist stimulation of cells, which determine the functional specificity of the channels in activating different Ca2+-dependent gene expression pathways.
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Affiliation(s)
- Hwei Ling Ong
- Secretory Physiology Section, Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Shyh-Ing Jang
- Secretory Physiology Section, Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Indu Suresh Ambudkar
- Secretory Physiology Section, Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail:
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23
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Jang SI, Kim JH, Kim M, Yang S, Jo EA, Lee JW, Na K, Kim JM, Jeong S, Lee DH, Lee DK. Porcine feasibility and safety study of a new paclitaxel-eluting biliary stent with a Pluronic-containing membrane. Endoscopy 2012; 44:825-31. [PMID: 22752887 DOI: 10.1055/s-0032-1309881] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND STUDY AIM Metal stents for malignant biliary obstruction are susceptible to occlusion by tumor ingrowth or overgrowth. Therefore, we previously reported our use of a metal stent covered with a paclitaxel-incorporated membrane giving an antitumor effect to prevent occlusion from tumor ingrowth. We have also developed a new generation of paclitaxel-eluting biliary stent using a membrane containing Pluronic F-127 for effective drug delivery. The aim of this study was to investigate the safety and efficacy of drug delivery for this newly developed stent in the biliary tract. METHODS Metal stents were coated with paclitaxel and various concentrations of Pluronic F-127 in phosphate-buffered saline solution. Stents containing varying concentrations were placed in the bile ducts of eight pigs divided as follows: group I, 0% Pluronic + 0% paclitaxel; group II, 0% Pluronic + 10% paclitaxel; group III, 10% Pluronic + 10% paclitaxel; group IV, 20% Pluronic + 10% paclitaxel. The histology of the porcine bile duct and the amount of paclitaxel in the porcine serum were examined. The amount of paclitaxel released was also measured in vitro. RESULTS Histologic changes in the porcine biliary epithelium were acceptable in terms of safety, based on inflammatory cell infiltration and fibrotic reaction. No significant differences in histology were observed between the groups. In the porcine serum analysis, released paclitaxel was detected for 28 days with the 10% Pluronic concentration (group III). However, released paclitaxel was observed for only 7 days in groups II and IV. In the in vitro experiments, long-lasting release of paclitaxel was also noted from the stent with 10% Pluronic. CONCLUSIONS The new paclitaxel-eluting stent with 10% Pluronic F-127 is safe and provides enhanced local drug delivery.
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Affiliation(s)
- S I Jang
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Lee KW, Lillehoj HS, Park MS, Jang SI, Ritter GD, Hong YH, Jeong W, Jeoung HY, An DJ, Lillehoj EP. Clostridium perfringens alpha-toxin and NetB toxin antibodies and their possible role in protection against necrotic enteritis and gangrenous dermatitis in broiler chickens. Avian Dis 2012; 56:230-3. [PMID: 22545552 DOI: 10.1637/9847-070711-resnote.1] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Necrotic enteritis (NE) and gangrenous dermatitis (GD) are important infectious diseases of poultry. Although NE and GD share a common pathogen, Clostridium perfringens, they differ in other important aspects such as clinical signs, pathologic symptoms, and age of onset. The primary virulence factors of C perfringens are its four major toxins (alpha, beta, epsilon, iota) and the newly described NE B-like (NetB) toxin. While neutralizing antibodies against some C perfingens toxins are associated with protection against infection in mammals, the serologic responses of NE- and GD-afflicted birds to these toxins have not been evaluated. Therefore, we measured serum antibody levels to C perfringens alpha-toxin and NetB toxin in commercial birds from field outbreaks of NE and GD using recombinant toxin-based enzyme-linked immunosorbent assay (ELISA). Initially, we used this ELISA system to detect antibody titers against C perfringens alpha-toxin and NetB toxin that were increased in birds experimentally coinfected with Eimeria maxima and C perfringens compared with uninfected controls. Next, we applied this ELISA to field serum samples from flock-mated birds with or without clinical signs of NE or GD. The results showed that the levels of antibodies against both toxins were significantly higher in apparently healthy chickens compared to birds with clinical signs of NE or GD, suggesting that these antitoxin antibodies may play a role in protection against NE and GD.
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Affiliation(s)
- K W Lee
- Animal Parasitic Diseases Laboratory, Animal and Natural Resources Institute, Agricultural Research Service, USDA, Beltsville, MD 20705, USA
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Lee KW, Lillehoj HS, Lee SH, Jang SI, Ritter GD, Bautista DA, Lillehoj EP. Impact of fresh or used litter on the posthatch immune system of commercial broilers. Avian Dis 2012; 55:539-44. [PMID: 22312971 DOI: 10.1637/9695-022511-reg.1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This study was carried out to investigate the effects of exposure of growing broiler chickens of commercial origin to used poultry litter on intestinal and systemic immune responses. The litter types evaluated were fresh wood shavings or used litter obtained from commercial poultry farms with or without a history of gangrenous dermatitis (GD). Immune parameters measured were serum nitric oxide (NO) levels, serum antibody titers against Eimeria or Clostridium perfringens, mitogen-induced spleen cell proliferation, and intestinal intraepithelial lymphocyte or splenic lymphocyte subpopulations. At 43 days posthatch, birds raised on used litter from a GD farm had higher serum NO levels and greater Eimeria or C. perfringens antibody levels compared with chickens raised on fresh litter or used, non-GD litter. Birds raised on non-GD and GD used litter had greater spleen cell mitogenic responses compared with chickens raised on fresh litter. Finally, spleen and intestinal lymphocyte subpopulations were increased or decreased depending on the litter type and the surface marker analyzed. Although it is likely that the presence of Eimeria oocysts and endemic viruses varies qualitatively and quantitatively between flocks and, by extension, varies between different used litter types, we believe that these data provide evidence that exposure of growing chicks to used poultry litter stimulates humoral and cell-mediated immune responses, presumably due to contact with contaminating enteric pathogens.
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Affiliation(s)
- K W Lee
- Animal Parasitic Diseases Laboratory, Animal and Natural Resources Institute, United States Department of Agriculture, Agricultural Research Service, Beltsville, MD 20705, USA
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Lee SH, Lillehoj HS, Hong YH, Jang SI, Lillehoj EP, Ionescu C, Mazuranok L, Bravo D. In vitro effects of plant and mushroom extracts on immunological function of chicken lymphocytes and macrophages. Br Poult Sci 2010; 51:213-21. [PMID: 20461582 DOI: 10.1080/00071661003745844] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
1. The present study was conducted to examine the effects of organic extracts from milk thistle (Silybum marianum), turmeric (Curcuma longa), reishi mushroom (Ganoderma lucidum), and shiitake mushroom (Lentinus edodes) on innate immunity and tumor cell viability. 2. Innate immunity was measured by lymphocyte proliferation and nitric oxide production by macrophages, and the inhibitory effect on tumor cell growth was assessed using a non-radioactive assay. For measuring the cytokine levels in the HD11 macrophages which were treated with extracts of turmeric or shiitake mushroom, the levels of mRNAs for interferon-alpha (IFN- alpha), interleukin-1beta (IL-1beta), IL-6, IL-12, IL-15, IL-18, and tumor necrosis factor superfamily 15 (TNFSF15) were quantified by real time RT-PCR. 3. In vitro culture of chicken spleen lymphocytes with extracts of milk thistle, turmeric, and shiitake and reishi mushrooms induced significantly higher cell proliferation compared with the untreated control cells. Stimulation of macrophages with extracts of milk thistle and shiitake and reishi mushrooms, but not turmeric, resulted in robust nitric oxide production to levels that were similar with those induced by recombinant chicken interferon-gamma. All extracts uniformly inhibited the growth of chicken tumor cells in vitro at the concentration of 6.3 through 100 microg/ml. Finally, the levels of mRNAs encoding IL-1beta, IL-6, IL-12, IL-18, and TNFSF15 were enhanced in macrophages that were treated with extracts of turmeric or shiitake mushroom compared with the untreated control. 4. These results document the immunologically-based enhancement of innate immunity in chickens by extracts of plants and mushrooms with known medicinal properties in vitro. In vivo studies are being planned to delineate the cellular and molecular mechanisms responsible for their mechanism of action.
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Affiliation(s)
- S H Lee
- Animal Parasitic Diseases Laboratory, Animal and Natural Resources Institute, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, MD 20705, USA
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Lee KW, Lee SH, Lillehoj HS, Li GX, Jang SI, Babu US, Park MS, Kim DK, Lillehoj EP, Neumann AP, Rehberger TG, Siragusa GR. Effects of direct-fed microbials on growth performance, gut morphometry, and immune characteristics in broiler chickens. Poult Sci 2010; 89:203-16. [PMID: 20075271 DOI: 10.3382/ps.2009-00418] [Citation(s) in RCA: 147] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This study was conducted to compare growth performance, gut morphometry, and parameters of local and systemic immunity in broiler chickens fed for 22 consecutive days with a diet supplemented with Bacillus spp. as direct-fed microbials (DFM), a commercial product incorporating 3 DFM, or a nonsupplemented diet. Direct-fed microbials did not significantly modify BW gain and most failed to affect serum antibody levels in response to immunization with a recombinant Eimeria protein. However, altered intestinal morphometric measurements were readily apparent in DFM-fed chickens as revealed by increased villus height and crypt depth compared with non-DFM-fed controls. In addition, serum levels of alpha-1-acid glycoprotein as an inflammatory marker were reduced in DFM-fed birds, whereas splenic lymphocyte proliferation, intestine intraepithelial lymphocyte subpopulations, and cytokine mRNA levels in intraepithelial lymphocytes were increased, decreased, or unchanged compared with controls depending on the DFM used. These results provide a rational scientific basis for future studies to investigate DFM as immunomodulating agents to enhance host protective immunity against enteric pathogens in broiler chickens.
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Affiliation(s)
- K W Lee
- Animal Parasitic Diseases Laboratory, Animal and Natural Resources Institute, Agricultural Research Service, USDA, Beltsville, MD 20705, USA
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Abstract
Mutation of human SOS1 is responsible for hereditary gingival fibromatosis type 1, a benign overgrowth condition of the gingiva. Here, we investigated molecular mechanisms responsible for the increased rate of cell proliferation in gingival fibroblasts caused by mutant SOS1 in vitro. Using ectopic expression of wild-type and mutant SOS1 constructs, we found that truncated SOS1 could localize to the plasma membrane, without growth factor stimuli, leading to sustained activation of Ras/MAPK signaling. Additionally, we observed an increase in the magnitude and duration of ERK signaling in hereditary gingival fibromatosis gingival fibroblasts that was associated with phosphorylation of retinoblastoma tumor suppressor protein and the up-regulation of cell cycle regulators, including cyclins C, D, and E and the E2F/DP transcription factors. These factors promote cell cycle progression from G(1) to S phase, and their up-regulation may underlie the increased gingival fibroblast proliferation observed. Selective depletion of wild-type and mutant SOS1 through small interfering RNA demonstrates the link between mutation of SOS1, ERK signaling, cell proliferation rate, and the expression levels of Egr-1 and proliferating cell nuclear antigen. These findings elucidate the mechanisms for gingival overgrowth mediated by SOS1 gene mutation in humans.
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Affiliation(s)
- Shyh-Ing Jang
- Section of Human and Craniofacial Genetics, National Institute of Dental and Craniofacial Research, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
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29
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Abstract
Although non-syndromic hereditary gingival fibromatosis (HGF) is genetically heterogeneous, etiologic mutations have been identified only in the Son of Sevenless-1 gene (SOS1). To test evidence of increased cell proliferation, we studied histological, morphological, and proliferation characteristics in monolayer and three-dimensional cultures of fibroblasts with the SOS1 g.126,142-126,143insC mutation. Histological assessment of HGF gingiva indicated increased numbers of fibroblasts (30%) and increased collagen (10%). Cell proliferation studies demonstrated increased growth rates and 5-bromo-2-deoxyuridine incorporation for HGF fibroblasts. Flow cytometry showed greater proportions of HGF fibroblasts in the G2/M phase. Attachment of HGF fibroblasts to different extracellular matrix surfaces demonstrated increased formation of protrusions with lamellipodia. HGF fibroblasts in three-dimensional culture showed greater cell proliferation, higher cell density, and alteration of surrounding collagen matrix. These findings revealed that increased fibroblast numbers and collagen matrix changes are associated with mutation of the SOS1 gene in vitro and in vivo.
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Affiliation(s)
- E J Lee
- Human Craniofacial Genetics Section, NIDCR, National Institutes of Health, DHHS, Building 10, Room 5-2523, 10 Center Drive, Bethesda, MD 20892, USA
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30
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Boeshans KM, Liu F, Peng G, Idler W, Jang SI, Marekov L, Black L, Ahvazi B. Purification, crystallization and preliminary X-ray diffraction analysis of the phage T4 vertex protein gp24 and its mutant forms. Protein Expr Purif 2006; 49:235-43. [PMID: 16884923 DOI: 10.1016/j.pep.2006.05.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2006] [Revised: 05/01/2006] [Accepted: 05/09/2006] [Indexed: 11/21/2022]
Abstract
The study of bacteriophage T4 assembly has revealed regulatory mechanisms pertinent not only to viruses but also to macromolecular complexes. The capsid of bacteriophage T4 is composed of the major capsid protein gp23, and a minor capsid protein gp24, which is arranged as pentamers at the vertices of the capsid. In this study the T4 capsid protein gp24 and its mutant forms were overexpressed and purified to homogeneity. The overexpression from plasmid vectors of all the constructs in Escherichia coli yields biologically active protein in vivo as determined by assembly of active virus following infection with inactivated gene 24 mutant viruses. The gp24 mutant was subjected to surface entropy reduction by mutagenesis and reductive alkylation in order to improve its crystallization properties and diffraction quality. To determine if surface mutagenesis targeting would result in diffractable crystals, two glutamate to alanine mutations (E89A,E90A) were introduced. We report here the biochemical observations and consequent mutagenesis experiment that resulted in improvements in the stability, crystallizability and crystal quality of gp24 without affecting the overall folding. Rational modification of the protein surface to achieve crystallization appears promising for improving crystallization behavior and crystal diffracting qualities. The crystal of gp24(E89A,E90A) diffracted to 2.6A resolution compared to wild-type gp24 at 3.80A resolution under the same experimental conditions. Surface mutation proved to be a better method than reductive methylation for improving diffraction quality of the gp24 crystals.
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Affiliation(s)
- Karen M Boeshans
- X-ray Crystallography Facility/Office of Science and Technology, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892-8024, USA
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31
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Kim SM, Kim R, Ryu JH, Jho EH, Song KJ, Jang SI, Kee SH. Multinuclear giant cell formation is enhanced by down-regulation of Wnt signaling in gastric cancer cell line, AGS. Exp Cell Res 2005; 308:18-28. [PMID: 15878526 DOI: 10.1016/j.yexcr.2005.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2004] [Revised: 03/24/2005] [Accepted: 04/04/2005] [Indexed: 11/29/2022]
Abstract
AGS cells, which were derived from malignant gastric adenocarcinoma tissue, lack E-cadherin-mediated cell adhesion but have a high level of nuclear beta-catenin, which suggests altered Wnt signal. In addition, approximately 5% of AGS cells form multinuclear giant cells in the routine culture conditions, while taxol treatment causes most AGS cells to become giant cells. The observation of reduced nuclear beta-catenin levels in giant cells induced by taxol treatment prompted us to investigate the relationship between Wnt signaling and giant cell formation. After overnight serum starvation, the shape of AGS cells became flattened, and this morphological change was accompanied by decrease in Myc expression and an increase in the giant cell population. Lithium chloride treatment, which inhibits GSK3beta activity, reversed these serum starvation effects, which suggests an inverse relationship between Wnt signaling and giant cell formation. Furthermore, the down-regulation of Wnt signaling caused by the over-expression of ICAT, E-cadherin, and Axin enhanced giant cell formation. Therefore, down-regulation of Wnt signaling may be related to giant cell formation, which is considered to be a survival mechanism against induced cell death.
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Affiliation(s)
- Shi-Mun Kim
- Laboratory of Epithelial Cell Biology, Department of Microbiology, College of Medicine, Korea University, 126-1, Anam-5-ga, Sungbuk-gu, Seoul 136-705, Republic of Korea
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32
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Jang SI, Kalinin A, Takahashi K, Marekov LN, Steinert PM. Characterization of human epiplakin: RNAi-mediated epiplakin depletion leads to the disruption of keratin and vimentin IF networks. J Cell Sci 2005; 118:781-93. [PMID: 15671067 DOI: 10.1242/jcs.01647] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Epiplakin is a member of the plakin family with multiple copies of the plakin repeat domain (PRD). We studied the subcellular distribution and interactions of human epiplakin by immunostaining, overlay assays and RNAi knockdown. Epiplakin decorated the keratin intermediate filaments (IF) network and partially that of vimentin. In the binding assays, the repeat unit (PRD plus linker) showed strong binding and preferentially associated with assembled IF over keratin monomers. Epiplakin knockdown revealed disruption of IF networks in simple epithelial but not in epidermal cells. In rescue experiments, the repeat unit was necessary to prevent the collapse of IF networks in transient knockdown; however, it could only partially restore the keratin but not the vimentin IF network in stably knocked down HeLa cells. We suggest that epiplakin is a cytolinker involved in maintaining the integrity of IF networks in simple epithelial cells. Furthermore, we observed an increase of epiplakin expression in keratinocytes after the calcium switch, suggesting the involvement of epiplakin in the process of keratinocyte differentiation.
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Affiliation(s)
- Shyh-Ing Jang
- Laboratory of Skin Biology, NIAMS, National Institutes of Health, Bethesda, MD 20892-8023, USA
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33
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Yun YG, Oh H, Oh GS, Pae HO, Choi BM, Kwon JW, Kwon TO, Jang SI, Chung HT. In Vitro Cytotoxicity of Mokko Lactone in Human Leukemia HL‐60 Cells: Induction of Apoptotic Cell Death by Mitochondrial Membrane Potential Collapse. Immunopharmacol Immunotoxicol 2004; 26:343-53. [PMID: 15518169 DOI: 10.1081/iph-200026863] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We studied the effect of mokko lactone (ML) isolated from the roots of Saussurea lappa (Compositae), a plant that is used for medicinal purposes in Korea, on the induction of apoptosis in human leukemia HL-60 cells. ML was cytotoxic to HL-60 cells, and this cytotoxic effect of ML appears to be attributable to its induction of apoptotic cell death, as ML induced nuclear morphologic changes and internucleosomal DNA fragmentation and increased the proportion of Annexin V-positive cells and the activity of caspase-3. Further studies revealed that the induction of apoptosis by ML was associated with the loss of mitochondrial membrane potential. Collectively, our results suggest that apoptosis induced by ML in HL-60 cells was executed by a collapse of mitochondrial membrane potential followed by the activation of caspase-3. This is the first report on the mechanism of apoptosis-inducing effect of ML.
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Affiliation(s)
- Y G Yun
- Department of Prescription, Wonkwang University School of Oriental Medicine, Iksan, Chonbuk, South Korea
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Jang SI, Kim HJ, Hwang KM, Jekal SJ, Pae HO, Choi BM, Yun YG, Kwon TO, Chung HT, Kim YC. Hepatoprotective effect of baicalin, a major flavone from Scutellaria radix, on acetaminophen-induced liver injury in mice. Immunopharmacol Immunotoxicol 2004; 25:585-94. [PMID: 14686800 DOI: 10.1081/iph-120026443] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The protective effects of baicalin (BA), a major flavone from Scutellaria radix, on acetaminophen (AP)-induced hepatotoxicity and the possible mechanism(s) of its protective action were investigated in mice. Treatment with BA (300 mg/kg, p.o.) 0.5 h after AP administration significantly prevented an increase in plasma alanine aminotransferase and aspartate aminotransferase activities and AP-induced hepatic necrosis, and also reduced AP-induced mortality from 43% to 0%. In addition, oral treatment with BA significantly prevented AP-induced depletion of glutathione (GSH) contents. However, BA treatment, by itself, did not affect hepatic GSH contents. The effect of BA on the cytochrome P450 2E1 (CYP2E1), the major isozyme involved in AP bioactivation, was investigated. Oral treatment of mice with BA resulted in a significant decrease in AP-induced CYP2E1 activity together with its inhibition of AP-induced CYP2EI expression. These results show that the hepatoprotective effects of BA against AP overdose may be due to its ability to block the bioactivation of AP by inhibiting CYP2E1 expression.
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Affiliation(s)
- S I Jang
- Department of Microbiology and Immunology, Wonkwang University, School of Medicine, Iksan, Chonbug, Republic of Korea
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35
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Pae HO, Oh GS, Choi BM, Shin S, Chai KY, Oh H, Kim JM, Kim HJ, Jang SI, Chung HT. Inhibitory effects of the stem bark of Catalpa ovata G. Don. (Bignoniaceae) on the productions of tumor necrosis factor-alpha and nitric oxide by the lipopolisaccharide-stimulated RAW 264.7 macrophages. J Ethnopharmacol 2003; 88:287-291. [PMID: 12963157 DOI: 10.1016/s0378-8741(03)00228-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In order to validate the use of the stem bark of Catalpa ovata G. Don. (Bignoniaceae) as an anti-inflammatory drug in the traditional Korean medicine, we have investigated the effects of the methanol extract of this folk medicine on the productions of tumor necrosis factor-alpha (TNF-alpha) and nitric oxide (NO) on RAW 264.7 macrophages activated with the endotoxin lipopolysaccharide. The extract inhibited the productions of TNF-alpha and NO with significant decreases in mRNA levels of TNF-alpha and inducible NO synthase, suggesting that the stem bark of Catalpa ovata may have therapeutic potential in the control of inflammatory disorders.
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Affiliation(s)
- H O Pae
- Medicinal Resources Research Center, Wonkwang University, Chonbuk 570-749, South Korea
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36
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Kwak HJ, Pae HO, Oh GS, Choi BM, Jang SI, Jung S, Chung HT. Molsidomine ameliorates experimental allergic encephalomyelitis in Lewis rats. Immunopharmacol Immunotoxicol 2003; 25:41-52. [PMID: 12675198 DOI: 10.1081/iph-120018282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Experimental allergic encephalomyelitis (EAE) is an autoimmune CD4+ T cell-mediated disease of the central nervous system (CNS). Nitric oxide (NO) plays an important role in preventing the development of EAE. Molsidomine (Mol) is a drug used for the treatment of coronary artery disease. Its therapeutic effects are the consequences of NO formation. In this study, we investigated the effects of Mol on EAE development in myelin basic protein (MBP)-immunized Lewis rats. All rats immunized with MBP developed typical clinical signs of acute EAE. In the EAE rats receiving Mol, the severity of clinical signs and the infiltration of inflammatory cells in CNS were clearly reduced. Furthermore, Mol administration significantly reduced the production of interferon-gamma, a Th1 inflammatory cytokine, but increased the production of interleukin-10, a Th2 anti-inflammatory cytokine. Our findings suggest that the administration of the exogenous NO donor Mol is of considerable benefit in limiting the development of EAE and other Th1 cell-mediated inflammatory diseases.
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Affiliation(s)
- H J Kwak
- Department of Microbiology and Immunology, Wonkwang University School of Medicine and Medicinal Resources Research Center of Wonkwang University, Iksan, Korea
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37
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Abstract
The suprabasin gene is a novel gene expressed in mouse and human differentiating keratinocytes. We identified a partial cDNA encoding suprabasin using a suppression subtractive hybridization method between the proliferative basal and differentiating suprabasal populations of the mouse epidermis. A 3' gene-specific probe hybridized to transcripts of 0.7- and 2.2-kb pairs on Northern blots with specific detection in differentiated keratinocytes of stratified epithelia. The mouse gene was mapped to chromosome 7 by fluorescence in situ hybridization. This region is syntenic to human chromosome band 19q13.1, which contained the only region in the data bases with homology to the mouse suprabasin sequence. During embryonic mouse development, suprabasin mRNA was detected at day 15.5, coinciding with epidermal stratification. Suprabasin was detected in the suprabasal layers of the epithelia in the tongue, stomach, and epidermis. Differentiation of cultured primary epidermal keratinocytes with 0.12 mm Ca(2+) or 12-O-tetradecanoylphorbol-13-acetate treatment resulted in the induction of suprabasin. The 2.2-kb cDNA transcript encodes a protein of 72 kDa with a predicted isoelectric point of 6.85. The translated sequence has an amino-terminal domain, a central domain composed of repeats rich in glycine and alanine, and a carboxyl-terminal domain. The alternatively spliced 0.7-kb transcript encodes a smaller protein that shares the NH(2)- and COOH-terminal regions but lacks the repeat domain region. Cross-linking experiments indicate that suprabasin is a substrate for transglutaminase 2 and 3 activity. Altogether, these results indicate that the suprabasin protein potentially plays a role in the process of epidermal differentiation.
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MESH Headings
- Amino Acid Sequence
- Animals
- Antigens, Differentiation/chemistry
- Antigens, Differentiation/genetics
- Antigens, Differentiation/metabolism
- Base Sequence
- Cell Differentiation/physiology
- Cells, Cultured
- Chromosomes, Human, Pair 7
- Culture Media, Serum-Free
- Embryo, Mammalian/anatomy & histology
- Embryo, Mammalian/physiology
- Epidermal Cells
- Epidermis/chemistry
- Epidermis/physiology
- GTP-Binding Proteins/metabolism
- Green Fluorescent Proteins
- Humans
- In Situ Hybridization
- In Situ Hybridization, Fluorescence
- Keratinocytes/cytology
- Keratinocytes/metabolism
- Luminescent Proteins/genetics
- Luminescent Proteins/metabolism
- Mice
- Molecular Sequence Data
- Protein Glutamine gamma Glutamyltransferase 2
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/metabolism
- Sequence Alignment
- Transglutaminases/metabolism
- Tripartite Motif Proteins
- Ubiquitin-Protein Ligases/genetics
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Affiliation(s)
| | | | - Shyh-Ing Jang
- Laboratory of Skin Biology, NIAMS, National Institutes of Health, Bethesda, Maryland 20892
| | - Maria I. Morasso
- From the Developmental Skin Biology Unit of the
- ¶ To whom correspondence should be addressed: Developmental Skin Biology Unit, Bldg. 50, Rm. 1525, NIAMS, National Institutes of Health, Bethesda, MD 20892. Tel.: 301-402-2888; Fax: 301-435-7910; E-mail:
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Jang SI, Steinert PM. Loricrin expression in cultured human keratinocytes is controlled by a complex interplay between transcription factors of the Sp1, CREB, AP1, and AP2 families. J Biol Chem 2002; 277:42268-79. [PMID: 12200429 DOI: 10.1074/jbc.m205593200] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The major protein component of the cornified cell envelope barrier structure of the epidermis is loricrin, and it is expressed late during terminal differentiation in epidermal keratinocytes. We have previously shown that an AP1 site located in the proximal promoter region (position -55) is essential for human loricrin promoter activity (Rossi, A., Jang, S-I., Ceci, R., Steinert, P. M., and Markova, N. G. (1998) J. Invest. Dermatol. 110, 34-40). In this study we show that its regulation requires complex cooperative and competitive interactions between multiple transcription factors in keratinocytes located in different compartments of the epidermis. We show that as few as 154 base pairs of 5'-upstream sequences from the cap site can direct the keratinocyte-specific expression in cultured keratinocytes. Mutation and DNA-protein analyses show that Sp1, c-Jun, an unidentified regulator, and the co-activator p300/CREB-binding protein up-regulate whereas Sp3, CREB-1/CREMalpha/ATF-1, Jun B, and an AP2-like protein (termed the keratinocyte-specific repressor-1 (KSR-1)) suppress loricrin promoter activity. We show that CREB protein can compete with c-Jun for the AP1 site and repress loricrin promoter activity. We show here that the protein kinase A pathway can activate loricrin expression by manipulation of the Sp1, Sp3, and KSR-1 levels in the nucleus. Thus, in undifferentiated cells, loricrin expression is suppressed by Jun B, Sp3, and KSR-1 proteins. But in advanced differentiated cells, levels of Sp3, KSR-1, and CREB proteins are lower; the unidentified regulator protein can bind; Sp1 and c-Jun are increased; and then p300/CBP is recruited. Together, these events allow loricrin transcription to proceed. Indeed, the synergistic effects of the Sp1, c-Jun, and p300 factors indicate that p300/CBP might act as bridge to form an active transcription complex.
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Affiliation(s)
- Shyh-Ing Jang
- Laboratory of Skin Biology, NIAMS, National Institutes of Health, Bethesda, Maryland 20892-8023, USA.
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Kee SH, Jang SI, Ahvazi B, Larsen M, Yamada KM, Steinert PM. Cell-cell adhesion and RhoA-mediated actin polymerization are independent phenomena in microtubule disrupted keratinocytes. J Invest Dermatol 2002; 119:440-8. [PMID: 12190868 DOI: 10.1046/j.1523-1747.2002.01826.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
E-cadherin-mediated adherens junction formation and maintenance are thought to involve actin filament rearrangements through the action of small GTPases. Recently, we demonstrated that microtubule disruption in normal human epidermal keratinocytes grown in low calcium media conditions induces cell-cell adhesion by redistribution of endogenous E-cadherin, and it promotes stress fiber formation. This actin rearrangement was apparently mediated by RhoA activation. This model system therefore provides a tool with which to dissect relationships between cell-cell adhesion and Rho-mediated stress fiber formation. In this study, we have demonstrated in normal human epidermal keratinocytes that disruption of actin structures including stress fibers does not interfere with E-cadherin redistribution during microtubule-induced cell-cell adhesion. Moreover, this cell-cell adhesion could not be blocked by RhoA inactivation at the level for inhibition of stress fiber formation. Additionally, in the immortalized HaCaT keratinocyte cell line, which does not undergo cell-cell adhesion after microtubule disruption in low calcium conditions, expression of dominant-active RhoA could induce stress fiber formation without inducing adhesion. On the other hand, a variant of the HaCaT cell line, HC-R1, showed microtubule-disruption-induced cell-cell adhesion without stress fiber formation. Together, our results suggest that, in keratinocytes, the process of cell adhesion can occur independently of RhoA-mediated stress fiber formation.
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Affiliation(s)
- Sun-Ho Kee
- Laboratory of Skin Biology, National Institute of Arthritis, Musculoskeletal and Skin Diseases, Bethesda, Maryland 20892-8023, USA
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40
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An SJ, Pae HO, Oh GS, Choi BM, Jeong S, Jang SI, Oh H, Kwon TO, Song CE, Chung HT. Inhibition of TNF-alpha, IL-1beta, and IL-6 productions and NF-kappa B activation in lipopolysaccharide-activated RAW 264.7 macrophages by catalposide, an iridoid glycoside isolated from Catalpa ovata G. Don (Bignoniaceae). Int Immunopharmacol 2002; 2:1173-81. [PMID: 12349954 DOI: 10.1016/s1567-5769(02)00085-1] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Catalposide, the major iridoid glycoside isolated from the stem bark of Catalpa ovata G. Don (Bignoniaceae), was found to inhibit the productions of tumor necrosis factor-alpha (TNF-alpha), interleukin-1beta (IL-1beta), and interleukin-6 (IL-6), and the activation of nuclear factor kappaB (NF-kappaB) in RAW 264.7 macrophages activated with lipopolysaccharide (LPS). Catalposide also inhibited the expressions of TNF-alpha, IL-1beta, and IL-6 genes and the nuclear translocation of p65 subunit of NF-kappaB in LPS-activated RAW 264.7 cells. Flow cytometric analysis revealed that catalposide suppressed the binding of FITC-conjugated LPS to CD14 on the surface of cells, probably resulting in the inhibitory effects on TNF-alpha, IL-1beta, and IL-6 productions and NF-kappaB activation. These findings suggest that catalposide could be an attractive candidate for adjunctive therapy in gram-negative bacterial infections.
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Affiliation(s)
- S J An
- Medicinal Resources Research Center of Wonkwang University, Iksan, Chunbug, South Korea
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41
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Wu KC, Bryan JT, Morasso MI, Jang SI, Lee JH, Yang JM, Marekov LN, Parry DA, Steinert PM. Coiled-coil trigger motifs in the 1B and 2B rod domain segments are required for the stability of keratin intermediate filaments. Mol Biol Cell 2000; 11:3539-58. [PMID: 11029054 PMCID: PMC15012 DOI: 10.1091/mbc.11.10.3539] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Many alpha-helical proteins that form two-chain coiled coils possess a 13-residue trigger motif that seems to be required for the stability of the coiled coil. However, as currently defined, the motif is absent from intermediate filament (IF) protein chains, which nevertheless form segmented two-chain coiled coils. In the present work, we have searched for and identified two regions in IF chains that are essential for the stability necessary for the formation of coiled-coil molecules and thus may function as trigger motifs. We made a series of point substitutions with the keratin 5/keratin 14 IF system. Combinations of the wild-type and mutant chains were assembled in vitro and in vivo, and the stabilities of two-chain (one-molecule) and two-molecule assemblies were examined with use of a urea disassembly assay. Our new data document that there is a region located between residues 100 and 113 of the 2B rod domain segment that is absolutely required for molecular stability and IF assembly. This potential trigger motif differs slightly from the consensus in having an Asp residue at position 4 (instead of a Glu) and a Thr residue at position 9 (instead of a charged residue), but there is an absolute requirement for a Glu residue at position 6. Because these 13 residues are highly conserved, it seems possible that this motif functions in all IF chains. Likewise, by testing keratin IF with substitutions in both chains, we identified a second potential trigger motif between residues 79 and 91 of the 1B rod domain segment, which may also be conserved in all IF chains. However, we were unable to find a trigger motif in the 1A rod domain segment. In addition, many other point substitutions had little detectable effect on IF assembly, except for the conserved Lys-23 residue of the 2B rod domain segment. Cross-linking and modeling studies revealed that Lys-23 may lie very close to Glu-106 when two molecules are aligned in the A(22) mode. Thus, the Glu-106 residue may have a dual role in IF structure: it may participate in trigger formation to afford special stability to the two-chain coiled-coil molecule, and it may participate in stabilization of the two-molecule hierarchical stage of IF structure.
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Affiliation(s)
- K C Wu
- Laboratory of Skin Biology, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA
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Jang SI, Karaman-Jurukovska N, Morasso MI, Steinert PM, Markova NG. Complex interactions between epidermal POU domain and activator protein 1 transcription factors regulate the expression of the profilaggrin gene in normal human epidermal keratinocytes. J Biol Chem 2000; 275:15295-304. [PMID: 10809764 DOI: 10.1074/jbc.275.20.15295] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The human profilaggrin gene is expressed in the granular layer during the late stages of the epidermal differentiation. The proximal promoter region of the gene confers high levels of keratinocyte-specific transcription via interactions with c-Jun/c-Fos heterodimers. Here we provide evidence for another level of complexity in the regulation of the profilaggrin promoter activity. The POU domain proteins Oct1, Skn1a/i, and Oct6, which are abundantly expressed in the epidermal cells, act to both stimulate and repress transcription in a general and a cell type-specific mode. While binding to specific recognition elements within the promoter region, they exert their effects by either stimulating or antagonizing the c-Jun-dependent activity of the promoter. The response of the promoter to forced expression of the POU domain proteins reflects the effect of these transcription factors on the endogenous profilaggrin mRNA synthesis and suggests that the latter requires a fine balance in the amounts and the activities of the individual activator protein 1 and POU domain proteins.
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Affiliation(s)
- S I Jang
- Laboratory of Skin Biology, NIAMS, National Institutes of Health, Bethesda, Maryland 20892, USA
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Steinert PM, Chou YH, Prahlad V, Parry DA, Marekov LN, Wu KC, Jang SI, Goldman RD. A high molecular weight intermediate filament-associated protein in BHK-21 cells is nestin, a type VI intermediate filament protein. Limited co-assembly in vitro to form heteropolymers with type III vimentin and type IV alpha-internexin. J Biol Chem 1999; 274:9881-90. [PMID: 10092680 DOI: 10.1074/jbc.274.14.9881] [Citation(s) in RCA: 159] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
BHK-21 fibroblasts contain type III vimentin/desmin intermediate filament (IF) proteins that typically co-isolate and co-cycle in in vitro experiments with certain high molecular weight proteins. Here, we report purification of one of these and demonstrate that it is in fact the type VI IF protein nestin. Nestin is expressed in several fibroblastic but not epithelioid cell lines. We show that nestin forms homodimers and homotetramers but does not form IF by itself in vitro. In mixtures, nestin preferentially co-assembles with purified vimentin or the type IV IF protein alpha-internexin to form heterodimer coiled-coil molecules. These molecules may co-assemble into 10 nm IF provided that the total amount of nestin does not exceed about 25%. However, nestin does not dimerize with types I/II keratin IF chains. The bulk of the nestin protein consists of a long carboxyl-terminal tail composed of various highly charged peptide repeats. By analogy with the larger neurofilament chains, we postulate that these sequences serve as cross-bridgers or spacers between IF and/or other cytoskeletal constituents. In this way, we propose that direct incorporation of modest amounts of nestin into the backbone of cytoplasmic types III and IV IFs affords a simple yet flexible method for the regulation of their dynamic supramolecular organization and function in cells.
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Affiliation(s)
- P M Steinert
- Laboratory of Skin Biology, NIAMS, National Institutes of Health, Bethesda, Maryland 20892-2752, USA.
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Abstract
PCR-based methods and mobility shift competition assays were used to determine the basic biochemical features of the homeodomain transcription factor Distal-less 3 (Dlx3), including an optimal DNA binding site, the binding constant and dissociation rates of this protein. Expression of Dlx3 protein in either HeLa cells or Xenopus embryos resulted in strong activation of a model target gene construct containing three tandem copies of the Dlx3 binding site upstream from the TATA element. In addition, deletion analysis revealed that transcriptional activation by Dlx3 depends on two subdomains located on either side of the homeobox: removal of either subdomain resulted in complete loss of Dlx3 function. These observations provide new insight regarding the function of Dlx3 in vertebrate development and tissue differentiation and also suggest a mechanism for the dominant inheritance pattern of a hereditary disease resulting from mutation of the DLX3 gene in human.
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Affiliation(s)
- J A Feledy
- Laboratory of Molecular Genetics, NICHD and Laboratory of Skin Biology, NIAMS, National Institutes of Health, Bethesda, MD 20892, USA
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Lee JH, Whang KU, Wu K, Steinert PM, Jang SI. Repression of transglutaminase 3 gene expression by a single-stranded DNA binding protein. J Dermatol Sci 1998. [DOI: 10.1016/s0923-1811(98)83800-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Morasso MI, Jang SI, Dlugosz AA. Control of terminal epidermal differentiation by Dlx3. J Dermatol Sci 1998. [DOI: 10.1016/s0923-1811(98)83432-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wu K, Andreoli JM, Coticchia CM, Markova NG, Steinert PM, Jang SI. Analysis of the control of expression and tissue specificity of the human trichohyalin gene. J Dermatol Sci 1998. [DOI: 10.1016/s0923-1811(98)83795-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Jang SI, Rossi A, Ceci R, Markova NG, Steinert PM. Positive and negative elements control the expression of the human Loricrin gene promoter. J Dermatol Sci 1998. [DOI: 10.1016/s0923-1811(98)83124-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Rossi A, Jang SI, Ceci R, Steinert PM, Markova NG. Effect of AP1 transcription factors on the regulation of transcription in normal human epidermal keratinocytes. J Invest Dermatol 1998; 110:34-40. [PMID: 9424084 DOI: 10.1046/j.1523-1747.1998.00071.x] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The conversion of basal keratinocytes to spinous and granular cells is accompanied by the synthesis of a series of epidermal proteins in a differentiation-specific pattern. The transcription of several of these epidermal marker genes is regulated by activator protein 1 (AP1) interactions at their promoter regions. In the epidermis the various AP1 transcription factors are not present uniformly but appear to have a differentiation-specific distribution. We have explored whether the AP1 regulated expression of the keratin 5, transglutaminase 1, involucrin, and loricrin genes reflects the distribution of the AP1 factors in the epidermis. We have found that c-jun and junD activate and junB downregulates the transcription of both basal and suprabasal genes. The effect of c-jun is exerted through interactions with c-fos at the AP1 motifs in the target promoters, whereas both junB and junD act independently of the binding at the AP1 sites. Thus c-jun and junD act as general positive regulators whereas junB acts as a general suppressor of epidermal-specific genes. Therefore, the differentiation specificity of the AP1 regulation must be determined not only by the formation of distinct DNA/AP1 complexes but also by interactions involving other transcriptional regulators and/or distal regulatory elements.
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Affiliation(s)
- A Rossi
- Department of Experimental Medicine, University of Tor Vergata, Rome, Italy
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Andreoli JM, Jang SI, Chung E, Coticchia CM, Steinert PM, Markova NG. The expression of a novel, epithelium-specific ets transcription factor is restricted to the most differentiated layers in the epidermis. Nucleic Acids Res 1997; 25:4287-95. [PMID: 9336459 PMCID: PMC147045 DOI: 10.1093/nar/25.21.4287] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Ets proteins have been implicated in the regulation of gene expression during a variety of biological processes, including growth control, differentiation, development and transformation. More than 35 related proteins containing the 'ets domain' have now been found which specifically interact with DNA sequences encompassing the core tetranucleotide GGAA. Although ets responsive genes have been identified in the epidermis, little is known about their distribution and function in this tissue. We have now demonstrated that epidermis and cultured epidermal keratinocytes synthesize numerous ets proteins. The expression of some of these proteins is regulated as a function of differentiation. Among these is a novel ets transcription factor with a dual DNA-binding specificity, which we have called jen. The expression of jen is not only epithelial specific, but it is the only ets protein so far described, and one of the very few transcription factors whose expression is restricted to the most differentiated epidermal layers. We show that two epidermal marker genes whose expression coincides with that of jen are transregulated by this protein in a complex mode which involves interactions with other transcriptional regulators such as Sp1 and AP1.
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Affiliation(s)
- J M Andreoli
- Laboratory of Skin Biology, NIAMS, NIH, Bethesda, MD 20892-2752, USA
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