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Sommer C, Cohen JN, Dehmel S, Neuhaus V, Schaudien D, Braun A, Sewald K, Rosenblum MD. Interleukin-2-induced skin inflammation. Eur J Immunol 2024; 54:e2350580. [PMID: 38430129 PMCID: PMC11015984 DOI: 10.1002/eji.202350580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 01/09/2024] [Accepted: 01/15/2024] [Indexed: 03/03/2024]
Abstract
Recombinant human IL-2 has been used to treat inflammatory diseases and cancer; however, side effects like skin rashes limit the use of this therapeutic. To identify key molecules and cells inducing this side effect, we characterized IL-2-induced cutaneous immune reactions and investigated the relevance of CD25 (IL-2 receptor α) in the process. We injected IL-2 intradermally into WT mice and observed increases in immune cell subsets in the skin with preferential increases in frequencies of IL-4- and IL-13-producing group 2 innate lymphoid cells and IL-17-producing dermal γδ T cells. This overall led to a shift toward type 2/type 17 immune responses. In addition, using a novel topical genetic deletion approach, we reduced CD25 on skin, specifically on all cutaneous cells, and found that IL-2-dependent effects were reduced, hinting that CD25 - at least partly - induces this skin inflammation. Reduction of CD25 specifically on skin Tregs further augmented IL-2-induced immune cell infiltration, hinting that CD25 on skin Tregs is crucial to restrain IL-2-induced inflammation. Overall, our data support that innate lymphoid immune cells are key cells inducing side effects during IL-2 therapy and underline the significance of CD25 in this process.
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Affiliation(s)
- Charline Sommer
- Fraunhofer Institute for Toxicology and Experimental Medicine ITEM, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Member of the Fraunhofer Cluster of Excellence Immune-Mediated Diseases CIMD, Hannover, Germany
| | - Jarish N Cohen
- Department of Dermatology, University of California, San Francisco, California, USA
- Department of Pathology, University of California, San Francisco, California, USA
| | - Susann Dehmel
- Fraunhofer Institute for Toxicology and Experimental Medicine ITEM, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Member of the Fraunhofer Cluster of Excellence Immune-Mediated Diseases CIMD, Hannover, Germany
| | - Vanessa Neuhaus
- Fraunhofer Institute for Toxicology and Experimental Medicine ITEM, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Member of the Fraunhofer Cluster of Excellence Immune-Mediated Diseases CIMD, Hannover, Germany
| | - Dirk Schaudien
- Fraunhofer Institute for Toxicology and Experimental Medicine ITEM, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Member of the Fraunhofer Cluster of Excellence Immune-Mediated Diseases CIMD, Hannover, Germany
| | - Armin Braun
- Fraunhofer Institute for Toxicology and Experimental Medicine ITEM, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Member of the Fraunhofer Cluster of Excellence Immune-Mediated Diseases CIMD, Hannover, Germany
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Katherina Sewald
- Fraunhofer Institute for Toxicology and Experimental Medicine ITEM, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Member of the Fraunhofer Cluster of Excellence Immune-Mediated Diseases CIMD, Hannover, Germany
| | - Michael D Rosenblum
- Department of Dermatology, University of California, San Francisco, California, USA
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Lowe MM, Cohen JN, Moss MI, Clancy S, Adler JP, Yates AE, Naik HB, Yadav R, Pauli M, Taylor I, McKay A, Harris H, Kim E, Hansen SL, Rosenblum MD, Moreau JM. Tertiary lymphoid structures sustain cutaneous B cell activity in hidradenitis suppurativa. JCI Insight 2024; 9:e169870. [PMID: 38113104 DOI: 10.1172/jci.insight.169870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 12/15/2023] [Indexed: 12/21/2023] Open
Abstract
Hidradenitis suppurativa (HS) is a chronic skin condition affecting approximately 1% of the US population. HS skin lesions are highly inflammatory and characterized by a large immune infiltrate. While B cells and plasma cells comprise a major component of this immune milieu, the biology and the contribution of these cells in HS pathogenesis are unclear. We aimed to investigate the dynamics and microenvironmental interactions of B cells within cutaneous HS lesions. Combining histological analysis, single-cell RNA sequencing, and spatial transcriptomics profiling of HS lesions, we defined the tissue microenvironment relative to B cell activity within this disease. Our findings identified tertiary lymphoid structures (TLSs) within HS lesions and described organized interactions among T cells, B cells, antigen-presenting cells, and skin stroma. We found evidence that B cells within HS TLSs actively underwent maturation, including participation in germinal center reactions and class switch recombination. Moreover, skin stroma and accumulating T cells were primed to support the formation of TLSs and facilitate B cell recruitment during HS. Our data definitively demonstrated the presence of TLSs in lesional HS skin and point to ongoing cutaneous B cell maturation through class switch recombination and affinity maturation during disease progression in this inflamed nonlymphoid tissue.
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Affiliation(s)
- Margaret M Lowe
- Department of Dermatology, University of California, San Francisco (UCSF), San Francisco, California, USA
| | - Jarish N Cohen
- Department of Dermatology, University of California, San Francisco (UCSF), San Francisco, California, USA
| | - Madison I Moss
- Department of Dermatology, University of California, San Francisco (UCSF), San Francisco, California, USA
| | - Sean Clancy
- Department of Dermatology, University of California, San Francisco (UCSF), San Francisco, California, USA
| | - James P Adler
- Bioinformatics and Genomics master's program, University of Oregon, Eugene, Oregon, USA
- Cancer Early Detection Advanced Research Center, Oregon Health & Science University (OHSU), Portland, Oregon, USA
| | - Ashley E Yates
- Department of Dermatology, University of California, San Francisco (UCSF), San Francisco, California, USA
| | - Haley B Naik
- Department of Dermatology, University of California, San Francisco (UCSF), San Francisco, California, USA
| | - Rashi Yadav
- Cancer Early Detection Advanced Research Center, Oregon Health & Science University (OHSU), Portland, Oregon, USA
| | | | - Ian Taylor
- TRex Bio, South San Francisco, California, USA
| | | | - Hobart Harris
- Department of Surgery, UCSF, San Francisco, California, USA
| | - Esther Kim
- Department of Surgery, UCSF, San Francisco, California, USA
| | - Scott L Hansen
- Department of Surgery, UCSF, San Francisco, California, USA
| | - Michael D Rosenblum
- Department of Dermatology, University of California, San Francisco (UCSF), San Francisco, California, USA
| | - Joshua M Moreau
- Cancer Early Detection Advanced Research Center, Oregon Health & Science University (OHSU), Portland, Oregon, USA
- Division of Oncological Sciences
- Department of Dermatology, and
- Department of Cell, Developmental and Cancer Biology, OHSU, Portland, Oregon, USA
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Cohen JN, Gouirand V, Macon CE, Lowe MM, Boothby IC, Moreau JM, Gratz IK, Stoecklinger A, Weaver CT, Sharpe AH, Ricardo-Gonzalez RR, Rosenblum MD. Regulatory T cells in skin mediate immune privilege of the hair follicle stem cell niche. Sci Immunol 2024; 9:eadh0152. [PMID: 38181095 PMCID: PMC11003870 DOI: 10.1126/sciimmunol.adh0152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 11/10/2023] [Indexed: 01/07/2024]
Abstract
Immune tolerance is maintained in lymphoid organs (LOs). Despite the presence of complex immune cell networks in non-LOs, it is unknown whether self-tolerance is maintained in these tissues. We developed a technique to restrict genetic recombination to regulatory T cells (Tregs) only in skin. Selective depletion of skin Tregs resulted in T cell-mediated inflammation of hair follicles (HFs). Suppression did not rely on CTLA-4, but instead on high-affinity interleukin-2 (IL-2) receptor expression by skin Tregs, functioning exclusively in a cell-extrinsic manner. In a novel model of HF stem cell (HFSC)-driven autoimmunity, we reveal that skin Tregs immunologically protect the HFSC niche. Finally, we used spatial transcriptomics to identify aberrant IL-2 signaling at stromal-HF interfaces in a rare form of human alopecia characterized by HFSC destruction and alopecia areata. Collectively, these results reveal the fundamental biology of Tregs in skin uncoupled from the systemic pool and elucidate a mechanism of self-tolerance.
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Affiliation(s)
- Jarish N. Cohen
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
- Department of Pathology, University of California, San Francisco, San Francisco, CA, USA
| | - Victoire Gouirand
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Courtney E. Macon
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Margaret M. Lowe
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Ian C. Boothby
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
- Medical Scientist Training Program, University of California, San Francisco, CA, USA
| | - Joshua M. Moreau
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Iris K. Gratz
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Angelika Stoecklinger
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
- EB House Austria, Research Program for Molecular Therapy of Genodermatoses, Department of Dermatology, University Hospital of the Paracelsus Medical, University of Salzburg, Salzburg, Austria
| | - Casey T. Weaver
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Arlene H. Sharpe
- Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
- Evergrande Center for Immunological Diseases, Harvard Medical School and Brigham and Women’s Hospital, Boston, MA, USA
- Department of Pathology, Brigham and Women’s Hospital, Boston, MA, USA
| | | | - Michael D. Rosenblum
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
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Wilkerson K, Bradley FE, Lee EY, Cohen JN, Chang AY. Sweet syndrome in a patient with rectal adenocarcinoma and HIV following neoadjuvant chemoradiation. JAAD Case Rep 2024; 43:72-75. [PMID: 38234372 PMCID: PMC10793161 DOI: 10.1016/j.jdcr.2023.11.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024] Open
Affiliation(s)
- Kamina Wilkerson
- School of Medicine, University of California, San Francisco, San Francisco, California
| | - Flora E. Bradley
- Department of Dermatology, University of California, San Francisco, San Francisco, California
| | - Ernest Y. Lee
- Department of Dermatology, University of California, San Francisco, San Francisco, California
| | - Jarish N. Cohen
- Department of Dermatology, University of California, San Francisco, San Francisco, California
| | - Aileen Y. Chang
- Department of Dermatology, University of California, San Francisco, San Francisco, California
- Department of Dermatology, Zuckerberg San Francisco General Hospital and Trauma Center, San Francisco, California
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Black MA, Neumann NM, Krings G, Najjar S, Troxell ML, Wang A, Devine WP, Vohra P, Gasper C, Chen YY, Cohen JN, Bean GR. Genetic and Immunohistochemical Profiling of Mammary Hidradenoma and Comparison to Mucoepidermoid Carcinoma. Mod Pathol 2023; 36:100270. [PMID: 37422157 DOI: 10.1016/j.modpat.2023.100270] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 05/04/2023] [Revised: 06/18/2023] [Accepted: 06/30/2023] [Indexed: 07/10/2023]
Abstract
Mucoepidermoid carcinoma (MEC) is exceedingly rare in the breast, with <45 cases reported in the literature. Although estrogen receptor/progesterone receptor/human epidermal growth factor 2 triple-negative, MEC is characterized as a special subtype of breast carcinoma with significantly better prognosis than conventional basal-type tumors. Cutaneous hidradenoma (HA) is considered a benign adnexal neoplasm showing histomorphologic overlap with MEC. Rare cases of HA have also been reported in the breast, but these are relatively uncharacterized. In this study, we examined the clinicopathologic, immunohistochemical (IHC), and genetic features of 8 breast HAs, in comparison to 3 mammary MECs. All cases were positive for MAML2 break-apart fluorescence in situ hybridization. Eight cases demonstrated a CRTC1::MAML2 fusion, and one MEC harbored a CRTC3::MAML2 fusion; the latter is a novel finding in the breast. Mutational burden was very low, with only one HA exhibiting a MAP3K1 pathogenic alteration. By IHC, both MEC and HA demonstrated cell type-dependent expression of high- and low-molecular-weight keratins and p63, as well as negative to low-positive estrogen receptor and androgen receptor. Smooth muscle myosin and calponin highlighted an in situ component in the 3 cases of MEC; expression of these myoepithelial markers was negative in HAs. Additional distinguishing characteristics included the growth pattern and tumor architecture, the presence of glandular/luminal cells in HA, and overall higher IHC expression of SOX10, S100 protein, MUC4, and mammaglobin in MEC. Morphologic findings were also compared to a series of 27 cutaneous nonmammary HAs. Mucinous and glandular/luminal cells were identified in significantly more mammary HAs than nonmammary lesions. The findings provide insight into the pathogenesis of MAML2-rearranged neoplasms of the breast, underscore the overlapping genetic features of MEC and HA, and highlight similarities to their extramammary counterparts.
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Affiliation(s)
- Margaret A Black
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Neil M Neumann
- Department of Pathology, University of California San Francisco, San Francisco, California
| | - Gregor Krings
- Department of Pathology, University of California San Francisco, San Francisco, California
| | - Saleh Najjar
- Department of Pathology, King Faisal Specialist Hospital & Research Centre, Saudi Arabia
| | - Megan L Troxell
- Department of Pathology, Stanford University School of Medicine, Stanford, California
| | - Aihui Wang
- Department of Pathology, Stanford University School of Medicine, Stanford, California
| | - W Patrick Devine
- Department of Pathology, University of California San Francisco, San Francisco, California
| | - Poonam Vohra
- Department of Pathology, University of California San Francisco, San Francisco, California
| | - Cynthia Gasper
- Department of Pathology, University of California San Francisco, San Francisco, California
| | - Yunn-Yi Chen
- Department of Pathology, University of California San Francisco, San Francisco, California
| | - Jarish N Cohen
- Department of Pathology, University of California San Francisco, San Francisco, California
| | - Gregory R Bean
- Department of Pathology, Stanford University School of Medicine, Stanford, California.
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6
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Lowe MM, Cohen JN, Moss MI, Clancy S, Adler J, Yates A, Naik HB, Pauli M, Taylor I, McKay A, Harris H, Kim E, Hansen SL, Rosenblum MD, Moreau JM. Tertiary Lymphoid Structures Sustain Cutaneous B cell Activity in Hidradenitis Suppurativa. bioRxiv 2023:2023.02.14.528504. [PMID: 36824918 PMCID: PMC9949072 DOI: 10.1101/2023.02.14.528504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Background Hidradenitis suppurativa (HS) skin lesions are highly inflammatory and characterized by a large immune infiltrate. While B cells and plasma cells comprise a major component of this immune milieu the biology and contribution of these cells in HS pathogenesis is unclear. Objective We aimed to investigate the dynamics and microenvironmental interactions of B cells within cutaneous HS lesions. Methods We combined histological analysis, single-cell RNA-sequencing (scRNAseq), and spatial transcriptomic profiling of HS lesions to define the tissue microenvironment relative to B cell activity within this disease. Results Our findings identify tertiary lymphoid structures (TLS) within HS lesions and describe organized interactions between T cells, B cells, antigen presenting cells and skin stroma. We find evidence that B cells within HS TLS actively undergo maturation, including participation in germinal center reactions and class switch recombination. Moreover, skin stroma and accumulating T cells are primed to support the formation of TLS and facilitate B cell recruitment during HS. Conclusion Our data definitively demonstrate the presence of TLS in lesional HS skin and point to ongoing cutaneous B cell maturation through class switch recombination and affinity maturation during disease progression in this inflamed non-lymphoid tissue.
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7
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Ricardo-Gonzalez RR, Kotas ME, O'Leary CE, Singh K, Damsky W, Liao C, Arouge E, Tenvooren I, Marquez DM, Schroeder AW, Cohen JN, Fassett MS, Lee J, Daniel SG, Bittinger K, Díaz RE, Fraser JS, Ali N, Ansel KM, Spitzer MH, Liang HE, Locksley RM. Innate type 2 immunity controls hair follicle commensalism by Demodex mites. Immunity 2022; 55:1891-1908.e12. [PMID: 36044899 PMCID: PMC9561030 DOI: 10.1016/j.immuni.2022.08.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 06/27/2022] [Accepted: 08/02/2022] [Indexed: 01/05/2023]
Abstract
Demodex mites are commensal parasites of hair follicles (HFs). Normally asymptomatic, inflammatory outgrowth of mites can accompany malnutrition, immune dysfunction, and aging, but mechanisms restricting Demodex outgrowth are not defined. Here, we show that control of mite HF colonization in mice required group 2 innate lymphoid cells (ILC2s), interleukin-13 (IL-13), and its receptor, IL-4Ra-IL-13Ra1. HF-associated ILC2s elaborated IL-13 that attenuated HFs and epithelial proliferation at anagen onset; in their absence, Demodex colonization led to increased epithelial proliferation and replacement of gene programs for repair by aberrant inflammation, leading to the loss of barrier function and HF exhaustion. Humans with rhinophymatous acne rosacea, an inflammatory condition associated with Demodex, had increased HF inflammation with decreased type 2 cytokines, consistent with the inverse relationship seen in mice. Our studies uncover a key role for skin ILC2s and IL-13, which comprise an immune checkpoint that sustains cutaneous integrity and restricts pathologic infestation by colonizing HF mites.
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Affiliation(s)
- Roberto R Ricardo-Gonzalez
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA; Department of Microbiology & Immunology, University of California, San Francisco, San Francisco, CA, USA; Chan Zuckerberg Biohub, San Francisco, CA, USA.
| | - Maya E Kotas
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Claire E O'Leary
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Katelyn Singh
- Department of Dermatology, Yale School of Medicine, New Haven, CT, USA
| | - William Damsky
- Department of Dermatology, Yale School of Medicine, New Haven, CT, USA; Department of Pathology, Yale School of Medicine, New Haven, CT, USA
| | - Chang Liao
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Elizabeth Arouge
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Iliana Tenvooren
- Department of Otolaryngology and Microbiology & Immunology, University of California, San Francisco, San Francisco, CA, USA
| | - Diana M Marquez
- Department of Otolaryngology and Microbiology & Immunology, University of California, San Francisco, San Francisco, CA, USA
| | - Andrew W Schroeder
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Jarish N Cohen
- Department of Pathology, University of California, San Francisco, San Francisco, CA, USA
| | - Marlys S Fassett
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA; Department of Microbiology & Immunology, University of California, San Francisco, San Francisco, CA, USA
| | - Jinwoo Lee
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Scott G Daniel
- Division of Gastroenterology, Hepatology, and Nutrition, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Kyle Bittinger
- Division of Gastroenterology, Hepatology, and Nutrition, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Roberto Efraín Díaz
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA; Tetrad Graduate Program, University of California, San Francisco, San Francisco, CA, USA
| | - James S Fraser
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Niwa Ali
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - K Mark Ansel
- Department of Microbiology & Immunology, University of California, San Francisco, San Francisco, CA, USA
| | - Matthew H Spitzer
- Department of Otolaryngology and Microbiology & Immunology, University of California, San Francisco, San Francisco, CA, USA; Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA; Chan Zuckerberg Biohub, San Francisco, CA, USA
| | - Hong-Erh Liang
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Richard M Locksley
- Department of Microbiology & Immunology, University of California, San Francisco, San Francisco, CA, USA; Department of Medicine, University of California, San Francisco, San Francisco, CA, USA; Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, CA, USA.
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8
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Moss MI, Pauli M, Moreau JM, Cohen JN, Rosenblum MD, Lowe MM. Xenograft Skin Model to Manipulate Human Immune Responses In Vivo. J Vis Exp 2022:10.3791/64040. [PMID: 35848826 PMCID: PMC10552904 DOI: 10.3791/64040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The human skin xenograft model, in which human donor skin is transplanted onto an immunodeficient mouse host, is an important option for translational research in skin immunology. Murine and human skin differ substantially in anatomy and immune cell composition. Therefore, traditional mouse models have limitations for dermatological research and drug discovery. However, successful xenotransplants are technically challenging and require optimal specimen and mouse graft site preparation for graft and host survival. The present protocol provides an optimized technique for transplanting human skin onto mice and discusses necessary considerations for downstream experimental aims. This report describes the appropriate preparation of a human donor skin sample, assembly of a surgical setup, mouse and surgical site preparation, skin transplantation, and post-surgical monitoring. Adherence to these methods allows for maintenance of xenografts for over 6 weeks post-surgery. The techniques outlined below allow maximum grafting efficiency due to the development of engineering controls, sterile technique, and pre- and post-surgical conditioning. Appropriate performance of the xenograft model results in long-lived human skin graft samples for experimental characterization of human skin and preclinical testing of compounds in vivo.
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Merana GR, Dwyer LR, Dhariwala MO, Weckel A, Gonzalez JR, Okoro JN, Cohen JN, Tamaki CM, Han J, Tasoff P, Palacios-Calderon Y, Ha CWY, Lynch SV, Segre JA, Kong HH, Kattah MG, Ma A, Scharschmidt TC. Intestinal inflammation alters the antigen-specific immune response to a skin commensal. Cell Rep 2022; 39:110891. [PMID: 35649365 PMCID: PMC9248974 DOI: 10.1016/j.celrep.2022.110891] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 04/08/2022] [Accepted: 05/05/2022] [Indexed: 12/13/2022] Open
Abstract
Resident microbes in skin and gut predominantly impact local immune cell function during homeostasis. However, colitis-associated neutrophilic skin disorders suggest possible breakdown of this compartmentalization with disease. Using a model wherein neonatal skin colonization by Staphylococcus epidermidis facilitates generation of commensal-specific tolerance and CD4+ regulatory T cells (Tregs), we ask whether this response is perturbed by gut inflammation. Chemically induced colitis is accompanied by intestinal expansion of S. epidermidis and reduces gut-draining lymph node (dLN) commensal-specific Tregs. It also results in reduced commensal-specific Tregs in skin and skin-dLNs and increased skin neutrophils. Increased CD4+ circulation between gut and skin dLN suggests that the altered cutaneous response is initiated in the colon, and resistance to colitis-induced effects in Cd4creIl1r1fl/fl mice implicate interleukin (IL)-1 in mediating the altered commensal-specific response. These findings provide mechanistic insight into observed connections between inflammatory skin and intestinal diseases.
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Affiliation(s)
- Geil R Merana
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA; Biomedical Sciences Program, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Laura R Dwyer
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA; Biomedical Sciences Program, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Miqdad O Dhariwala
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Antonin Weckel
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jeanmarie R Gonzalez
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA; Biomedical Sciences Program, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Joy N Okoro
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jarish N Cohen
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA; Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Courtney M Tamaki
- Parnassus Flow Cytometry CoLab, University of California, San Francisco, San Francisco, 94143, USA
| | - Jungmin Han
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Preston Tasoff
- Benioff Center for Microbiome Medicine, Department of Medicine, University of California, San Francisco, CA 94143, USA
| | | | - Connie W Y Ha
- Benioff Center for Microbiome Medicine, Department of Medicine, University of California, San Francisco, CA 94143, USA
| | - Susan V Lynch
- Benioff Center for Microbiome Medicine, Department of Medicine, University of California, San Francisco, CA 94143, USA; Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Julia A Segre
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Heidi H Kong
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Michael G Kattah
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Averil Ma
- Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Tiffany C Scharschmidt
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA.
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10
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Bapat SP, Whitty C, Mowery CT, Liang Y, Yoo A, Jiang Z, Peters MC, Zhang LJ, Vogel I, Zhou C, Nguyen VQ, Li Z, Chang C, Zhu WS, Hastie AT, He H, Ren X, Qiu W, Gayer SG, Liu C, Choi EJ, Fassett M, Cohen JN, Sturgill JL, Crotty Alexander LE, Suh JM, Liddle C, Atkins AR, Yu RT, Downes M, Liu S, Nikolajczyk BS, Lee IK, Guttman-Yassky E, Ansel KM, Woodruff PG, Fahy JV, Sheppard D, Gallo RL, Ye CJ, Evans RM, Zheng Y, Marson A. Obesity alters pathology and treatment response in inflammatory disease. Nature 2022; 604:337-342. [PMID: 35355021 PMCID: PMC9165753 DOI: 10.1038/s41586-022-04536-0] [Citation(s) in RCA: 77] [Impact Index Per Article: 38.5] [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: 03/18/2021] [Accepted: 02/08/2022] [Indexed: 12/17/2022]
Abstract
Decades of work have elucidated cytokine signalling and transcriptional pathways that control T cell differentiation and have led the way to targeted biologic therapies that are effective in a range of autoimmune, allergic and inflammatory diseases. Recent evidence indicates that obesity and metabolic disease can also influence the immune system1-7, although the mechanisms and effects on immunotherapy outcomes remain largely unknown. Here, using two models of atopic dermatitis, we show that lean and obese mice mount markedly different immune responses. Obesity converted the classical type 2 T helper (TH2)-predominant disease associated with atopic dermatitis to a more severe disease with prominent TH17 inflammation. We also observed divergent responses to biologic therapies targeting TH2 cytokines, which robustly protected lean mice but exacerbated disease in obese mice. Single-cell RNA sequencing coupled with genome-wide binding analyses revealed decreased activity of nuclear receptor peroxisome proliferator-activated receptor-γ (PPARγ) in TH2 cells from obese mice relative to lean mice. Conditional ablation of PPARγ in T cells revealed that PPARγ is required to focus the in vivo TH response towards a TH2-predominant state and prevent aberrant non-TH2 inflammation. Treatment of obese mice with a small-molecule PPARγ agonist limited development of TH17 pathology and unlocked therapeutic responsiveness to targeted anti-TH2 biologic therapies. These studies reveal the effects of obesity on immunological disease and suggest a precision medicine approach to target the immune dysregulation caused by obesity.
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Affiliation(s)
- Sagar P Bapat
- NOMIS Center for Immunobiology and Microbial Pathogenesis, The Salk Institute for Biological Studies, La Jolla, CA, USA.
- Gene Expression Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA.
- Medical Scientist Training Program, University of California, San Diego, La Jolla, CA, USA.
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA.
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA.
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA.
| | - Caroline Whitty
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
| | - Cody T Mowery
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
- Medical Scientist Training Program, University of California, San Francisco, CA, USA
| | - Yuqiong Liang
- NOMIS Center for Immunobiology and Microbial Pathogenesis, The Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Arum Yoo
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Zewen Jiang
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Michael C Peters
- Division of Pulmonary, Critical Care, Allergy and Sleep, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Ling-Juan Zhang
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
- Department of Dermatology, University of California, San Diego, La Jolla, CA, USA
| | - Ian Vogel
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
| | - Carmen Zhou
- NOMIS Center for Immunobiology and Microbial Pathogenesis, The Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Vinh Q Nguyen
- Department of Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Zhongmei Li
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Christina Chang
- NOMIS Center for Immunobiology and Microbial Pathogenesis, The Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Wandi S Zhu
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Sandler Asthma Basic Research Center, University of California, San Francisco, San Francisco, CA, USA
| | - Annette T Hastie
- School of Medicine, Wake Forest University, Winston-Salem, NC, USA
| | - Helen He
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Xin Ren
- Lung Biology Center, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Wenli Qiu
- Lung Biology Center, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Sarah G Gayer
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Chang Liu
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Eun Jung Choi
- Department of Biomedical Science, Graduate School, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
| | - Marlys Fassett
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Sandler Asthma Basic Research Center, University of California, San Francisco, San Francisco, CA, USA
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Jarish N Cohen
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
- Department of Pathology, University of California, San Francisco, San Francisco, CA, USA
| | - Jamie L Sturgill
- Department of Internal Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Kentucky, Lexington, KY, USA
| | - Laura E Crotty Alexander
- Pulmonary Critical Care Section, Department of Medicine, Veterans Affairs San Diego Healthcare System, San Diego, CA, USA
- Division of Pulmonary Critical Care and Sleep Medicine, Department of Medicine, University of California, San Diego, CA, USA
| | - Jae Myoung Suh
- Graduate School of Medical Science and Engineering, KAIST, Daejeon, Republic of Korea
| | - Christopher Liddle
- Storr Liver Centre, Westmead Institute for Medical Research and Sydney Medical School, Westmead Hospital, University of Sydney, Westmead, New South Wales, Australia
| | - Annette R Atkins
- Gene Expression Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Ruth T Yu
- Gene Expression Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Michael Downes
- Gene Expression Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Sihao Liu
- Gene Expression Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Barbara S Nikolajczyk
- Department of Pharmacology and Nutritional Sciences and the Barnstable Brown Diabetes and Obesity Research Center, University of Kentucky, Lexington, KY, USA
| | - In-Kyu Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
| | - Emma Guttman-Yassky
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - K Mark Ansel
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Sandler Asthma Basic Research Center, University of California, San Francisco, San Francisco, CA, USA
| | - Prescott G Woodruff
- Medical Scientist Training Program, University of California, San Francisco, CA, USA
| | - John V Fahy
- Medical Scientist Training Program, University of California, San Francisco, CA, USA
| | - Dean Sheppard
- Medical Scientist Training Program, University of California, San Francisco, CA, USA
- Lung Biology Center, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Richard L Gallo
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
| | - Chun Jimmie Ye
- Institute for Human Genetics (IHG), University of California, San Francisco, San Francisco, CA, USA
- Institute for Computational Health Sciences, University of California, San Francisco, San Francisco, CA, USA
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Ronald M Evans
- Gene Expression Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, USA.
| | - Ye Zheng
- NOMIS Center for Immunobiology and Microbial Pathogenesis, The Salk Institute for Biological Studies, La Jolla, CA, USA.
| | - Alexander Marson
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA.
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA.
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA.
- Institute for Human Genetics (IHG), University of California, San Francisco, San Francisco, CA, USA.
- Chan Zuckerberg Biohub, San Francisco, CA, USA.
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, USA.
- Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA.
- UCSF Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA, USA.
- Gladstone-UCSF Institute of Genomic Immunology, San Francisco, CA, USA.
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11
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Neumann NM, LeBoit PE, Cohen JN. Superficial Angiomyxomas Frequently Demonstrate Loss of Protein Kinase A Regulatory Subunit 1 Alpha Expression: Immunohistochemical Analysis of 29 Cases and Cutaneous Myxoid Neoplasms With Histopathologic Overlap. Am J Surg Pathol 2022; 46:226-232. [PMID: 34889853 DOI: 10.1097/pas.0000000000001851] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 11/25/2022]
Abstract
Superficial angiomyxomas (SAMs) are benign cutaneous tumors that arise de novo and in the setting of the Carney complex (CC), an autosomal dominant disease with several cutaneous manifestations including lentigines and pigmented epithelioid melanocytomas. Although most SAM do not pose a diagnostic challenge, a subset can demonstrate histopathologic overlap with other myxoid tumors that arise in the skin and subcutis. Traditional immunohistochemical markers are of limited utility when discriminating SAM from histopathologic mimics. Since protein kinase A regulatory subunit 1 alpha (PRKAR1A) genetic alterations underlie most CC cases, we investigated whether SAM demonstrate loss of PRKAR1A protein expression by immunohistochemistry. In our series, 29 SAM, 26 myxofibrosarcoma, 5 myxoid dermatofibrosarcoma protuberans, 11 superficial acral fibromyxomas, and 18 digital mucous cysts were characterized. Of the 29 SAM examined in this study, 1 was associated with documented CC in a 5-year-old girl. SAM tended to arise in adults (mean 49.7 y; range: 5 to 87 y). Loss of PRKAR1A was seen in 55.2% of cases (16/29) and had a male predilection (87.5%, 12/16). PRKAR1A-inactivated SAM demonstrated significant nuclear enlargement (100%, 16/16 vs. 23.1%, 3/13), multinucleation (81.3%, 13/16 vs. 23.1%, 3/13), and presence of neutrophils (43.8%, 7/16 vs. 0%, 0/13). In contrast, PRKAR1A was retained in all cases of myxofibrosarcoma (100%, 26/26), myxoid dermatofibrosarcoma protuberans (100%, 5/5), superficial acral fibromyxomas (100%, 11/11), and digital mucous cyst (100%, 18/18). Taken together, PRKAR1A loss by immunohistochemistry can be used as an adjunctive assay to support the diagnosis of SAM given the high specificity of this staining pattern compared with histopathologic mimics.
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Affiliation(s)
| | - Philip E LeBoit
- Departments of Pathology
- Dermatology
- Helen K. Diller Cancer Center, University of California, San Francisco, CA
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12
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Rahbar Z, Cohen JN, McCalmont TH, LeBoit PE, Connolly MK, Berger T, Pincus LB. Cicatricial Pemphigoid Brunsting-Perry Variant Masquerading as Neutrophil-Medicated Cicatricial Alopecia. J Cutan Pathol 2021; 49:408-411. [PMID: 34841567 DOI: 10.1111/cup.14177] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/16/2021] [Accepted: 11/22/2021] [Indexed: 11/27/2022]
Abstract
A 72-year-old male presented with scarring alopecia on the scalp vertex, multiple crusted plaques on the hairline, and a history of vesicular eruption on the face. The scalp showed crusted plaques with loss of follicular ostia. No follicular pustules or compound follicles were present. An initial transverse scalp biopsy showed perifollicular neutrophils, lymphocytes, and plasma cells along with dermal fibrosis. Focal epidermal/dermal and follicular/adventitial dermal clefts were apparent but were thought to be secondary to fibrosis, and the biopsy was interpreted to represent a neutrophil-mediated cicatricial alopecia. Concurrently, direct immunofluorescence (DIF) analysis demonstrated linear junctional deposition of IgG and C3. A repeat scalp biopsy revealed more prominent epidermal/dermal clefts, fibrosis, mixed infiltrate with neutrophils, lymphocytes, histiocytes and plasma cells and prominent follicular/adventitial dermal clefts with perifollicular neutrophils. Given the combination of clefts, perijunctional neutrophils, and positive DIF findings, it became clear that this eruption represented the Brunsting-Perry variant of cicatricial pemphigoid. Here, we illustrated that a neutrophil-rich form of cicatricial pemphigoid can masquerade as a neutrophil-mediated scarring alopecia. In evaluating a specimen suspected to be a neutrophil-mediated scarring alopecia, one should be alert to the presence of subepidermal and perifollicular clefting, and consider cicatricial pemphigoid. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ziba Rahbar
- Department of Pathology, Loma Linda University Health, Loma Linda, California
| | - Jarish N Cohen
- Department of Pathology, University of California, San Francisco, California.,Department of Dermatology, University of California, San Francisco, California
| | - Timothy H McCalmont
- Department of Pathology, University of California, San Francisco, California.,Department of Dermatology, University of California, San Francisco, California
| | - Philip E LeBoit
- Department of Pathology, University of California, San Francisco, California.,Department of Dermatology, University of California, San Francisco, California
| | - M Kari Connolly
- Department of Pathology, University of California, San Francisco, California.,Department of Dermatology, University of California, San Francisco, California
| | - Timothy Berger
- Department of Dermatology, University of California, San Francisco, California
| | - Laura B Pincus
- Department of Pathology, University of California, San Francisco, California.,Department of Dermatology, University of California, San Francisco, California
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13
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Boothby IC, Kinet MJ, Boda DP, Kwan EY, Clancy S, Cohen JN, Habrylo I, Lowe MM, Pauli M, Yates AE, Chan JD, Harris HW, Neuhaus IM, McCalmont TH, Molofsky AB, Rosenblum MD. Early-life inflammation primes a T helper 2 cell-fibroblast niche in skin. Nature 2021; 599:667-672. [PMID: 34707292 PMCID: PMC8906225 DOI: 10.1038/s41586-021-04044-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 09/20/2021] [Indexed: 12/18/2022]
Abstract
Inflammation early in life can prime the local immune milieu of peripheral tissues, which can cause lasting changes in immunological tone that confer disease protection or susceptibility1. The cellular and molecular mechanisms that prompt changes in immune tone in many nonlymphoid tissues remain largely unknown. Here we find that time-limited neonatal inflammation induced by a transient reduction in neonatal regulatory T cells causes a dysregulation of subcutaneous tissue in mouse skin. This is accompanied by the selective accumulation of type 2 helper T (TH2) cells within a distinct microanatomical niche. TH2 cells are maintained into adulthood through interactions with a fibroblast population in skin fascia that we refer to as TH2-interacting fascial fibroblasts (TIFFs), which expand in response to TH2 cytokines to form subcutaneous fibrous bands. Activation of the TH2-TIFF niche due to neonatal inflammation primes the skin for altered reparative responses to wounding. Furthermore, we identify fibroblasts in healthy human skin that express the TIFF transcriptional signature and detect these cells at high levels in eosinophilic fasciitis, an orphan disease characterized by inflammation and fibrosis of the skin fascia. Taken together, these data define a previously unidentified TH2 cell niche in skin and functionally characterize a disease-associated fibroblast population. The results also suggest a mechanism of immunological priming whereby inflammation early in life creates networks between adaptive immune cells and stromal cells to establish an immunological set-point in tissues that is maintained throughout life.
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Affiliation(s)
- Ian C. Boothby
- Department of Dermatology, University of California at San Franscisco, San Francisco, CA, USA.,Medical Scientist Training Program, University of California at San Franscisco, San Francisco, CA, USA
| | - Maxime J. Kinet
- Division of Rheumatology, Department of Medicine, University of California at San Franscisco, San Francisco, CA, USA
| | - Devi P. Boda
- Department of Dermatology, University of California at San Franscisco, San Francisco, CA, USA
| | - Elaine Y. Kwan
- Department of Dermatology, University of California at San Franscisco, San Francisco, CA, USA.,California Institute of Regenerative Medicine, San Francisco State University, San Francisco, CA, USA
| | - Sean Clancy
- Department of Dermatology, University of California at San Franscisco, San Francisco, CA, USA
| | - Jarish N. Cohen
- Department of Pathology, University of California at San Franscisco, San Francisco, CA, USA
| | - Ireneusz Habrylo
- Department of Dermatology, University of California at San Franscisco, San Francisco, CA, USA.,Medical Scientist Training Program, University of California at San Franscisco, San Francisco, CA, USA
| | - Margaret M. Lowe
- Department of Dermatology, University of California at San Franscisco, San Francisco, CA, USA
| | - Mariela Pauli
- Department of Dermatology, University of California at San Franscisco, San Francisco, CA, USA
| | - Ashley E. Yates
- Department of Dermatology, University of California at San Franscisco, San Francisco, CA, USA
| | - Jamie D. Chan
- Department of Pathology, University of California at San Franscisco, San Francisco, CA, USA
| | - Hobart W. Harris
- Department of Surgery, University of California at San Franscisco, San Francisco, CA, USA
| | - Isaac M. Neuhaus
- Department of Dermatology, University of California at San Franscisco, San Francisco, CA, USA
| | - Timothy H. McCalmont
- Department of Dermatology, University of California at San Franscisco, San Francisco, CA, USA.,Department of Pathology, University of California at San Franscisco, San Francisco, CA, USA
| | - Ari B. Molofsky
- Department of Laboratory Medicine, University of California at San Franscisco, San Francisco, CA, USA
| | - Michael D. Rosenblum
- Department of Dermatology, University of California at San Franscisco, San Francisco, CA, USA.,Correspondence and requests for materials should be addressed to Michael D. Rosenblum.
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14
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Moreau JM, Dhariwala MO, Gouirand V, Boda DP, Boothby IC, Lowe MM, Cohen JN, Macon CE, Leech JM, Kalekar LA, Scharschmidt TC, Rosenblum MD. Regulatory T cells promote innate inflammation after skin barrier breach via TGF-β activation. Sci Immunol 2021; 6:6/62/eabg2329. [PMID: 34452925 DOI: 10.1126/sciimmunol.abg2329] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 06/08/2021] [Accepted: 07/12/2021] [Indexed: 01/04/2023]
Abstract
Regulatory T cells (Tregs) use multiple mechanisms to attenuate inflammation and prevent autoimmunity. Tregs residing in peripheral (i.e., nonlymphoid) tissues have specialized functions; specifically, skin Tregs promote wound healing, suppress dermal fibrosis, facilitate epidermal regeneration, and augment hair follicle cycling. Here, we demonstrated that skin Tregs were transcriptionally attuned to interact with their tissue environment through increased expression of integrin and TGF-β pathway genes that influence epithelial cell biology. We identified a molecular pathway where skin Tregs license keratinocytes to promote innate inflammation after skin barrier breach. Using a single-cell discovery approach, we identified preferential expression of the integrin αvβ8 on skin Tregs Upon skin injury, Tregs used this integrin to activate latent TGF-β, which acted directly on epithelial cells to promote CXCL5 production and neutrophil recruitment. Induction of this circuit delayed epidermal regeneration but provided protection from Staphylococcus aureus infection across a compromised barrier. Thus, αvβ8-expressing Tregs in the skin, somewhat paradoxical to their canonical immunosuppressive functions, facilitated inflammation acutely after loss of barrier integrity to promote host defense against infection.
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Affiliation(s)
- Joshua M Moreau
- Department of Dermatology, University of California at San Francisco, San Francisco, CA, USA
| | - Miqdad O Dhariwala
- Department of Dermatology, University of California at San Francisco, San Francisco, CA, USA
| | - Victoire Gouirand
- Department of Dermatology, University of California at San Francisco, San Francisco, CA, USA
| | - Devi P Boda
- Department of Dermatology, University of California at San Francisco, San Francisco, CA, USA
| | - Ian C Boothby
- Department of Dermatology, University of California at San Francisco, San Francisco, CA, USA.,Medical Scientist Training Program, University of California at San Francisco, San Francisco, CA
| | - Margaret M Lowe
- Department of Dermatology, University of California at San Francisco, San Francisco, CA, USA
| | - Jarish N Cohen
- Department of Pathology, University of California at San Francisco, San Francisco, CA, 94143, USA
| | - Courtney E Macon
- Department of Dermatology, University of California at San Francisco, San Francisco, CA, USA
| | - John M Leech
- Department of Dermatology, University of California at San Francisco, San Francisco, CA, USA
| | - Lokesh A Kalekar
- Department of Dermatology, University of California at San Francisco, San Francisco, CA, USA
| | - Tiffany C Scharschmidt
- Department of Dermatology, University of California at San Francisco, San Francisco, CA, USA
| | - Michael D Rosenblum
- Department of Dermatology, University of California at San Francisco, San Francisco, CA, USA.
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15
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Affiliation(s)
| | - Iwei Yeh
- Departments of Pathology
- Dermatology
- Clinical Cancer Genomics Laboratory
- Helen Diller Cancer Center, University of California, San Francisco San Francisco, CA
| | | | - Philip E LeBoit
- Departments of Pathology
- Dermatology
- Clinical Cancer Genomics Laboratory
- Helen Diller Cancer Center, University of California, San Francisco San Francisco, CA
| | - Timothy H McCalmont
- Departments of Pathology
- Dermatology
- Clinical Cancer Genomics Laboratory
- Helen Diller Cancer Center, University of California, San Francisco San Francisco, CA
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16
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Boothby IC, Boda DP, Kwan EY, Cohen JN, Habrylo I, Molofsky AB, Rosenblum MD. Early Life Imprinting of a Th2-Stromal Cell Niche in Skin. The Journal of Immunology 2021. [DOI: 10.4049/jimmunol.206.supp.17.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Abstract
Tissue inflammation early in life can be imprinted on the immune system, causing lasting changes in immunologic tone that confer disease protection or susceptibility in adults. The cellular and molecular mechanisms responsible for immune imprinting in many nonlymphoid tissues remain largely unknown. We find that time-limited neonatal inflammation induced by transient reduction of regulatory T cells (Tregs) causes a dramatic dysregulation of skin stromal cells, accompanied by the selective accumulation of Th2 cells within a distinct microanatomic tissue niche. Th2 cells are maintained into adulthood through interactions with a previously uncharacterized stromal population in skin fascia that we refer to as Th2-interacting fascial fibroblasts (TIFFs), which expand following Treg reduction, respond to Th2 cytokines, and produce IL-33. Formation of the Th2-TIFF niche imprints skin with increased reparative capacity after wounding. Taken together, these data define a novel Th2 niche in skin and suggest a mechanism of immunologic imprinting whereby inflammation early in life creates networks between adaptive immune cells and parenchymal cells, establishing an immunological set-point in tissues that is maintained throughout life.
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17
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Dhariwala MO, Karthikeyan D, Vasquez KS, Farhat S, Weckel A, Taravati K, Leitner EG, Clancy S, Pauli M, Piper ML, Cohen JN, Ashouri JF, Lowe MM, Rosenblum MD, Scharschmidt TC. Developing Human Skin Contains Lymphocytes Demonstrating a Memory Signature. Cell Rep Med 2020; 1:100132. [PMID: 33294857 PMCID: PMC7691438 DOI: 10.1016/j.xcrm.2020.100132] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 03/19/2020] [Revised: 08/20/2020] [Accepted: 10/13/2020] [Indexed: 12/17/2022]
Abstract
Lymphocytes in barrier tissues play critical roles in host defense and homeostasis. These cells take up residence in tissues during defined developmental windows, when they may demonstrate distinct phenotypes and functions. Here, we utilized mass and flow cytometry to elucidate early features of human skin immunity. Although most conventional αβ T (Tconv) cells in fetal skin have a naive, proliferative phenotype, a subset of CD4+ Tconv and CD8+ cells demonstrate memory-like features and a propensity for interferon (IFN)γ production. Skin regulatory T cells dynamically accumulate over the second trimester in temporal and regional association with hair follicle development. These fetal skin regulatory T cells (Tregs) demonstrate an effector memory phenotype while differing from their adult counterparts in expression of key effector molecules. Thus, we identify features of prenatal skin lymphocytes that may have key implications for understanding antigen and allergen encounters in utero and in infancy. CyTOF reveals a complex lymphocyte landscape in developing human skin Developing skin contains CD45RO+ conventional T cells with propensity to produce IFNγ Regulatory T cells (Tregs) in skin before birth display effector memory properties Skin Tregs increase in conjunction with initial hair follicle morphogenesis
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Affiliation(s)
- Miqdad O Dhariwala
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Dhuvarakesh Karthikeyan
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Kimberly S Vasquez
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Sepideh Farhat
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Antonin Weckel
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Keyon Taravati
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Elizabeth G Leitner
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Sean Clancy
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Mariela Pauli
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Merisa L Piper
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jarish N Cohen
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA.,Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Judith F Ashouri
- Rosalind Russell and Ephraim P. Engleman Rheumatology Research Center, Division of Rheumatology, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Margaret M Lowe
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Michael D Rosenblum
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Tiffany C Scharschmidt
- Department of Dermatology, University of California, San Francisco, San Francisco, CA 94143, USA
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Kalekar LA, Cohen JN, Prevel N, Sandoval PM, Mathur AN, Moreau JM, Lowe MM, Nosbaum A, Wolters PJ, Haemel A, Boin F, Rosenblum MD. Regulatory T cells in skin are uniquely poised to suppress profibrotic immune responses. Sci Immunol 2020; 4:4/39/eaaw2910. [PMID: 31492709 DOI: 10.1126/sciimmunol.aaw2910] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 08/09/2019] [Indexed: 12/13/2022]
Abstract
At the center of fibrosing diseases is the aberrant activation of tissue fibroblasts. The cellular and molecular mechanisms of how the immune system augments fibroblast activation have been described; however, little is known about how the immune system controls fibroblast function in tissues. Here, we identify regulatory T cells (Tregs) as important regulators of fibroblast activation in skin. Bulk cell and single-cell analysis of Tregs in murine skin and lungs revealed that Tregs in skin are transcriptionally distinct and skewed toward T helper 2 (TH2) differentiation. When compared with Tregs in lung, skin Tregs preferentially expressed high levels of GATA3, the master TH2 transcription factor. Genes regulated by GATA3 were highly enriched in skin "TH2 Treg" subsets. In functional experiments, Treg depletion resulted in a preferential increase in TH2 cytokine production in skin. Both acute depletion and chronic reduction of Tregs resulted in spontaneous skin fibroblast activation, profibrotic gene expression, and dermal fibrosis, all of which were exacerbated in a bleomycin-induced murine model of skin sclerosis. Lineage-specific deletion of Gata3 in Tregs resulted in an exacerbation of TH2 cytokine secretion that was preferential to skin, resulting in enhanced fibroblast activation and dermal fibrosis. Together, we demonstrate that Tregs play a critical role in regulating fibroblast activation in skin and do so by expressing a unique tissue-restricted transcriptional program that is mediated, at least in part, by GATA3.
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Affiliation(s)
- Lokesh A Kalekar
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Jarish N Cohen
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Nicolas Prevel
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | | | - Anubhav N Mathur
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Joshua M Moreau
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Margaret M Lowe
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Audrey Nosbaum
- Department of Allergy and Clinical Immunology, Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon, Lyon, France
| | - Paul J Wolters
- Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Anna Haemel
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Francesco Boin
- Department of Rheumatology, University of California, San Francisco, San Francisco, CA, USA
| | - Michael D Rosenblum
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA.
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19
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Boothby IC, Cohen JN, Rosenblum MD. Regulatory T cells in skin injury: At the crossroads of tolerance and tissue repair. Sci Immunol 2020; 5:eaaz9631. [PMID: 32358172 PMCID: PMC7274208 DOI: 10.1126/sciimmunol.aaz9631] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [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: 02/20/2020] [Accepted: 04/08/2020] [Indexed: 12/21/2022]
Abstract
Skin injury is a highly inflammatory process that is carefully regulated to mitigate tissue damage and allow for proper barrier repair. Regulatory T cells (Tregs) are crucial coordinators of the immune response to injury in several organs. Here, we review the emerging role of Tregs in facilitating skin repair after injury. We focus on recently discovered interactions between lymphocytes and nonhematopoietic cells during wound healing and discuss how these interactions are regulated both by "classical" suppressive mechanisms of Tregs and by "nonclassical" reparative Treg functions.
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Affiliation(s)
- Ian C Boothby
- Department of Dermatology, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143, USA
- Medical Scientist Training Program, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143, USA
| | - Jarish N Cohen
- Department of Pathology, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143, USA
| | - Michael D Rosenblum
- Department of Dermatology, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143, USA.
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20
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Cohen JN, Bowman S, Laszik ZG, North JP. Clinicopathologic overlap of psoriasis, eczema, and psoriasiform dermatoses: A retrospective study of T helper type 2 and 17 subsets, interleukin 36, and β-defensin 2 in spongiotic psoriasiform dermatitis, sebopsoriasis, and tumor necrosis factor α inhibitor-associated dermatitis. J Am Acad Dermatol 2019; 82:430-439. [PMID: 31859047 DOI: 10.1016/j.jaad.2019.08.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [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: 10/22/2018] [Revised: 07/24/2019] [Accepted: 08/07/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND T helper (Th) type 17 and Th2 cells mediate psoriasis and eczema, respectively. Some dermatoses exhibit overlapping clinicopathologic features, and their immunopathology is relatively unexplored. OBJECTIVE To determine whether Th17 and Th2 subsets and interleukin (IL) 36 and β-defensin 2 (BD-2) markers of IL-17 signaling expression can discriminate between biopsy samples of psoriasis and eczematous/spongiotic dermatitis and to use those markers to immunophenotype cases with clinicopathologic overlap. METHODS A retrospective study was performed on biopsy samples of psoriasis, eczema/spongiotic dermatitis, sebopsoriasis, tumor necrosis factor α inhibitor-associated psoriasiform dermatitis, and ambiguous cases diagnosed as spongiotic psoriasiform dermatitis. Dual CD4/GATA3 and CD4/RORC, IL-36, and BD-2 immunohistochemistry was performed. RESULTS IL-36 and BD-2 were strongly expressed in biopsy samples of psoriasis compared with eczema/spongiotic dermatitis. No significant differences were observed in the percentages of Th2 and Th17 cells between disease types. Strong expression of IL-36 and BD-2 was observed in a subset of spongiotic psoriasiform dermatitis, sebopsoriasis, and tumor necrosis factor α inhibitor-associated psoriasiform dermatitis biopsy samples. LIMITATIONS This was an exploratory study with a small sample size. No multiple testing adjustment was done. Clinical follow-up was limited. CONCLUSIONS In cases with clinicopathologic overlap between psoriasis and spongiotic dermatitis, IL-36, and to a lesser extent BD-2, may be used to assess for a psoriasis-like/IL-17 phenotype, which could inform therapeutic clinical decisions.
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Affiliation(s)
- Jarish N Cohen
- Department of Pathology, University of California, San Francisco, CA; Department of Dermatology, University of California, San Francisco, CA; UCSF Dermatopathology Service, University of California, San Francisco, CA
| | - Sarah Bowman
- Department of Pathology, University of California, San Francisco, CA; UCSF Dermatopathology Service, University of California, San Francisco, CA
| | - Zoltan G Laszik
- Department of Pathology, University of California, San Francisco, CA; UCSF Dermatopathology Service, University of California, San Francisco, CA
| | - Jeffrey P North
- Department of Pathology, University of California, San Francisco, CA; Department of Dermatology, University of California, San Francisco, CA; UCSF Dermatopathology Service, University of California, San Francisco, CA.
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21
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Cohen JN, Yeh I, Jordan RC, Wolsky RJ, Horvai AE, McCalmont TH, LeBoit PE. Cutaneous Non-Neural Granular Cell Tumors Harbor Recurrent ALK Gene Fusions. Am J Surg Pathol 2019; 42:1133-1142. [PMID: 30001233 DOI: 10.1097/pas.0000000000001122] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Non-neural granular cell tumor (NNGCT; also known as primitive polypoid granular cell tumor) is a rare neoplasm composed of large ovoid cells with abundant granular cytoplasm, variable nuclear pleomorphism, and the potential for regional lymph node spread. In contrast to conventional granular cell tumor (GCT), NNGCT lacks S100 expression and can exhibit greater nuclear atypia and mitotic activity. Therefore, we investigated clinicopathologic features of 12 NNGCT, and also used next-generation sequencing to identify potential driver events in a subset of NNGCT and 6 GCT. NNGCT demonstrated mild-to-moderate nuclear pleomorphism, variable mitotic activity (0 to 10/10 high-power fields), and were S100. Genetic analysis of 5 cutaneous NNGCT revealed gene fusions involving the anaplastic lymphoma kinase gene (ALK) in 3 cases (60%). Specifically, an interstitial deletion of chromosome 2 resulting in an in-frame fusion of dyanactin 1 (DCTN1) to ALK was identified in 2 cases, and a translocation resulting in a fusion between sequestosome 1 (SQSTM1) on chromosome 5 and ALK was identified in one case. Two of 6 GCT (33%) showed gains of chromosome 7. No other molecular or chromosomal alterations were detected in NNGCT and GCT. ALK immunohistochemistry revealed weak-to-moderate positivity in 4/9 cutaneous NNCGT (44%) including all 3 tumors with ALK fusions. Three oral NNGCT lacked ALK expression. NNGCT with ALK immunostaining did not have morphologic features distinguishing them from those without ALK staining. Our results demonstrate that a subset of NNGCT harbor ALK fusions, suggest that NNGCT are molecularly diverse, and further substantiate NNGCT as distinct from GCT.
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Affiliation(s)
| | - Iwei Yeh
- Dermatopathology.,Clinical Cancer Genomics Laboratory.,Helen Diller Cancer Center, University of California, San Francisco
| | - Richard C Jordan
- Dermatopathology.,Helen Diller Cancer Center, University of California, San Francisco.,Orofacial Sciences, Pathology & Radiation Oncology
| | - Rebecca J Wolsky
- Departments of Pathology.,Department of Pathology, Zuckerberg San Francisco General Hospital, San Francisco, CA
| | | | - Timothy H McCalmont
- Departments of Pathology.,Dermatopathology.,Helen Diller Cancer Center, University of California, San Francisco
| | - Philip E LeBoit
- Departments of Pathology.,Dermatopathology.,Helen Diller Cancer Center, University of California, San Francisco
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22
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Cohen JN, Rosenblum MD. Y'all comeback now. Sci Immunol 2019; 4:4/35/eaax8197. [PMID: 32619187 DOI: 10.1126/sciimmunol.aax8197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Keratinocytes regulate circulating CD8+ T cell memory after cutaneous infection.
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Affiliation(s)
- Jarish N Cohen
- Department of Dermatology, University of California, San Francisco, CA 94143, USA. Department of Pathology, University of California, San Francisco, CA 94143, USA.
| | - Michael D Rosenblum
- Department of Dermatology, University of California, San Francisco, CA 94143, USA. Department of Pathology, University of California, San Francisco, CA 94143, USA.
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23
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Mathur AN, Zirak B, Boothby IC, Tan M, Cohen JN, Mauro TM, Mehta P, Lowe MM, Abbas AK, Ali N, Rosenblum MD. Treg-Cell Control of a CXCL5-IL-17 Inflammatory Axis Promotes Hair-Follicle-Stem-Cell Differentiation During Skin-Barrier Repair. Immunity 2019; 50:655-667.e4. [PMID: 30893588 PMCID: PMC6507428 DOI: 10.1016/j.immuni.2019.02.013] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 11/16/2018] [Accepted: 02/14/2019] [Indexed: 12/11/2022]
Abstract
Restoration of barrier-tissue integrity after injury is dependent on the function of immune cells and stem cells (SCs) residing in the tissue. In response to skin injury, hair-follicle stem cells (HFSCs), normally poised for hair generation, are recruited to the site of injury and differentiate into cells that repair damaged epithelium. We used a SC fate-mapping approach to examine the contribution of regulatory T (Treg) cells to epidermal-barrier repair after injury. Depletion of Treg cells impaired skin-barrier regeneration and was associated with a Th17 inflammatory response and failed HFSC differentiation. In this setting, damaged epithelial cells preferentially expressed the neutrophil chemoattractant CXCL5, and blockade of CXCL5 or neutrophil depletion restored barrier function and SC differentiation after epidermal injury. Thus, Treg-cell regulation of localized inflammation enables HFSC differentiation and, thereby, skin-barrier regeneration, with implications for the maintenance and repair of other barrier tissues.
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Affiliation(s)
- Anubhav N Mathur
- Department of Dermatology, University of California, San Francisco, CA, USA
| | - Bahar Zirak
- Department of Dermatology, University of California, San Francisco, CA, USA
| | - Ian C Boothby
- Department of Dermatology, University of California, San Francisco, CA, USA
| | - Madge Tan
- Department of Dermatology, University of California, San Francisco, CA, USA
| | - Jarish N Cohen
- Department of Dermatology, University of California, San Francisco, CA, USA
| | - Thea M Mauro
- Department of Dermatology, University of California, San Francisco, CA, USA
| | - Pooja Mehta
- Department of Dermatology, University of California, San Francisco, CA, USA
| | - Margaret M Lowe
- Department of Dermatology, University of California, San Francisco, CA, USA
| | - Abul K Abbas
- Department of Pathology, University of California, San Francisco, CA, USA
| | - Niwa Ali
- Department of Dermatology, University of California, San Francisco, CA, USA
| | - Michael D Rosenblum
- Department of Dermatology, University of California, San Francisco, CA, USA.
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24
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Cohen JN, Sabnis AJ, Krings G, Cho SJ, Horvai AE, Davis JL. EWSR1-NFATC2 gene fusion in a soft tissue tumor with epithelioid round cell morphology and abundant stroma: a case report and review of the literature. Hum Pathol 2018; 81:281-290. [PMID: 29626598 DOI: 10.1016/j.humpath.2018.03.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 03/06/2018] [Accepted: 03/16/2018] [Indexed: 12/28/2022]
Abstract
Mesenchymal round cell tumors are a diverse group of neoplasms defined by primitive, often high-grade cytomorphology. The most common molecular alterations detected in these tumors are gene rearrangements involving EWSR1 to one of many fusion partners. Rare EWSR1-NFATC2 gene rearrangements, corresponding to a t(20;22) gene translocation, have been described in mesenchymal tumors with clear round cell morphology and a predilection for the skeleton. We present a case of a tumor harboring the EWSR1-NFATC2 gene fusion arising in the subcutaneous tissue of a young woman. The tumor exhibited corded and trabecular architecture of epithelioid cells within abundant myxoid and fibrous stroma. The cells showed strong immunoreactivity for NKX2.2, variable CD99, keratin, and epithelial membrane antigen, but were negative for S100 and myoepithelial markers. Importantly, similar to previously reported cases, the clinical course was more indolent than that of Ewing sarcoma. This case highlights the distinctive clinicopathological characteristics of EWSR1-NFATC2 gene fusion-associated neoplasms that distinguish them from Ewing sarcoma.
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Affiliation(s)
- Jarish N Cohen
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94158
| | - Amit J Sabnis
- Department of Pediatrics, Division of Hematology-Oncology, University of California, San Francisco, San Francisco, CA 94158
| | - Gregor Krings
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94158; Clinical Cancer Genomics Laboratory, University of California, San Francisco, San Francisco, CA 94158
| | - Soo-Jin Cho
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94158
| | - Andrew E Horvai
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94158
| | - Jessica L Davis
- Department of Pathology, University of California, San Francisco, San Francisco, CA 94158; Department of Pathology, Oregon Health & Science University, Portland, OR 97239.
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25
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Cohen JN, Tewalt EF, Rouhani SJ, Buonomo EL, Bruce AN, Xu X, Bekiranov S, Fu YX, Engelhard VH. Tolerogenic properties of lymphatic endothelial cells are controlled by the lymph node microenvironment. PLoS One 2014; 9:e87740. [PMID: 24503860 PMCID: PMC3913631 DOI: 10.1371/journal.pone.0087740] [Citation(s) in RCA: 64] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Accepted: 12/13/2013] [Indexed: 12/04/2022] Open
Abstract
Peripheral self-tolerance eliminates lymphocytes specific for tissue-specific antigens not encountered in the thymus. Recently, we demonstrated that lymphatic endothelial cells in mice directly express peripheral tissue antigens, including tyrosinase, and induce deletion of specific CD8 T cells via Programmed Death Ligand-1 (PD-L1). Here, we demonstrate that high-level expression of peripheral tissue antigens and PD-L1 is confined to lymphatic endothelial cells in lymph nodes, as opposed to tissue (diaphragm and colon) lymphatics. Lymphatic endothelial cells in the lymph node medullary sinus express the highest levels of peripheral tissue antigens and PD-L1, and are the only subpopulation that expresses tyrosinase epitope. The representation of lymphatic endothelial cells in the medullary sinus expressing high-level PD-L1, which is necessary for normal CD8 T cell deletion kinetics, is controlled by lymphotoxin-β receptor signaling and B cells. Lymphatic endothelial cells from neonatal mice do not express high-level PD-L1 or present tyrosinase epitope. This work uncovers a critical role for the lymph node microenvironment in endowing lymphatic endothelial cells with potent tolerogenic properties.
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Affiliation(s)
- Jarish N. Cohen
- Department of Microbiology, Immunology, and Cancer Biology and Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Eric F. Tewalt
- Department of Microbiology, Immunology, and Cancer Biology and Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Sherin J. Rouhani
- Department of Microbiology, Immunology, and Cancer Biology and Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Erica L. Buonomo
- Department of Microbiology, Immunology, and Cancer Biology and Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Amber N. Bruce
- Department of Microbiology, Immunology, and Cancer Biology and Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Xiaojiang Xu
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Stefan Bekiranov
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Yang-Xin Fu
- Department of Pathology, University of Chicago, Chicago, Illinois, United States of America
| | - Victor H. Engelhard
- Department of Microbiology, Immunology, and Cancer Biology and Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
- * E-mail:
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26
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Tewalt EF, Cohen JN, Rouhani SJ, Engelhard VH. Lymphatic endothelial cells - key players in regulation of tolerance and immunity. Front Immunol 2012; 3:305. [PMID: 23060883 PMCID: PMC3460259 DOI: 10.3389/fimmu.2012.00305] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Accepted: 09/14/2012] [Indexed: 01/11/2023] Open
Abstract
The lymphatic vasculature provides routes for dendritic cell and lymphocyte migration into and out of lymph nodes. Lymphatic endothelial cells (LEC) control these processes by expression of CCL21, sphingosine-1-phosphate, and adhesion molecules. LEC express MHC-I and MHC-II, but not costimulatory molecules, and present antigen on MHC-I via both direct and cross-presentation. Whether LEC present to CD4 T cells on MHC-II is unknown. Interestingly, LEC express antigens otherwise restricted to a small number of peripheral tissues in an autoimmune regulatory element-independent manner. Direct presentation of peripheral tissue antigens (PTA) to CD8 T cells results in abortive proliferation and deletion, due to both a lack of costimulation and active PD-L1 engagement. Autoimmunity develops when deletion is subverted, suggesting that LEC presentation of PTA could lead to human disease if PD-1 signaling were impaired by genetic polymorphisms, or aberrant costimulation occurred during inflammation. The expression of additional inhibitory molecules, which are not involved in LEC-mediated deletion, suggests that LEC may have additional immunoregulatory roles. LEC express receptors for several immunomodulatory molecules whose engagement alters their phenotype and function. In this review we describe the role of LEC in distinct anatomical locations in controlling immune cell trafficking, as well as their emerging role in the regulation of T cell tolerance and immunity.
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Affiliation(s)
- Eric F Tewalt
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia School of Medicine Charlottesville, VA, USA ; Carter Immunology Center, University of Virginia School of Medicine Charlottesville, VA, USA
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27
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Cohen JN, Guidi CJ, Tewalt EF, Qiao H, Rouhani SJ, Ruddell A, Farr AG, Tung KS, Engelhard VH. Lymph node-resident lymphatic endothelial cells mediate peripheral tolerance via Aire-independent direct antigen presentation. J Exp Med 2010; 207:681-8. [PMID: 20308365 PMCID: PMC2856027 DOI: 10.1084/jem.20092465] [Citation(s) in RCA: 268] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Accepted: 02/22/2010] [Indexed: 12/15/2022] Open
Abstract
Peripheral immune tolerance is generally thought to result from cross-presentation of tissue-derived proteins by quiescent tissue-resident dendritic cells to self-reactive T cells that have escaped thymic negative selection, leading to anergy or deletion. Recently, we and others have implicated the lymph node (LN) stroma in mediating CD8 T cell peripheral tolerance. We demonstrate that LN-resident lymphatic endothelial cells express multiple peripheral tissue antigens (PTAs) independent of the autoimmune regulator (Aire). They directly present an epitope derived from one of these, the melanocyte-specific protein tyrosinase, to tyrosinase-specific CD8 T cells, leading to their deletion. We also show that other LN stromal subpopulations express distinct PTAs by mechanisms that vary in their Aire dependence. These results establish lymphatic endothelial cells, and potentially other LN-resident cells, as systemic mediators of peripheral immune tolerance.
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MESH Headings
- Animals
- Antigen Presentation/immunology
- Antigens, Neoplasm/genetics
- Autoantigens/genetics
- Autoantigens/immunology
- Autoantigens/metabolism
- Cell Proliferation
- Endothelial Cells/cytology
- Endothelial Cells/immunology
- Endothelial Cells/metabolism
- Epitopes, T-Lymphocyte/immunology
- Epitopes, T-Lymphocyte/metabolism
- Gene Expression/genetics
- Gene Expression/immunology
- Glutamate Decarboxylase/genetics
- Histocompatibility Antigens Class I/genetics
- Histocompatibility Antigens Class I/immunology
- Histocompatibility Antigens Class I/metabolism
- Immune Tolerance/immunology
- Immunophenotyping
- Lymph Nodes/cytology
- Lymph Nodes/immunology
- Lymphocyte Activation/immunology
- MART-1 Antigen
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/metabolism
- Mice
- Mice, Inbred BALB C
- Mice, Knockout
- Mice, Transgenic
- Monophenol Monooxygenase/genetics
- Monophenol Monooxygenase/immunology
- Monophenol Monooxygenase/metabolism
- Neoplasm Proteins/genetics
- Platelet Endothelial Cell Adhesion Molecule-1/metabolism
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell/immunology
- Stromal Cells/cytology
- Stromal Cells/immunology
- Stromal Cells/metabolism
- T-Lymphocytes/cytology
- T-Lymphocytes/immunology
- Transcription Factors/genetics
- AIRE Protein
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Affiliation(s)
- Jarish N Cohen
- Department of Microbiology and Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
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Mason NJ, Coughlin CM, Cohen JN, Colligon TA, Clifford CA, Zurbriggen A, Sorenmo KU, Vonderheide RH. RNA-loaded CD40-activated B cells stimulate antigen-specific T cell responses in dogs with spontaneous lymphoma. Vet Immunol Immunopathol 2009. [DOI: 10.1016/j.vetimm.2008.10.278] [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: 11/29/2022]
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Coughlin CM, Fleming MD, Carroll RG, Pawel BR, Hogarty MD, Shan X, Vance BA, Cohen JN, Jairaj S, Lord EM, Wexler MH, Danet-Desnoyers GAH, Pinkus JL, Pinkus GS, Maris JM, Grupp SA, Vonderheide RH. Immunosurveillance and Survivin-Specific T-Cell Immunity in Children With High-Risk Neuroblastoma. J Clin Oncol 2006; 24:5725-34. [PMID: 17179106 DOI: 10.1200/jco.2005.05.3314] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [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: 02/05/2023] Open
Abstract
PurposeTumor immunosurveillance influences oncogenesis and tumor growth, but it remains controversial whether clinical failure of immunosurveillance is a result of lymphocyte dysfunction or tumor escape. In this study, our goal was to characterize the physiology of tumor immunosurveillance in children with high-risk neuroblastoma (HR-NBL).Patients and MethodsImmunohistopathologic studies were carried out on 26 tumor samples from a cohort of HR-NBL patients diagnosed at Children's Hospital of Philadelphia for the 2-year period from May 2003 to May 2005. Blood from nine HLA-A2+patients in this cohort was analyzed for T cells specific for the antiapoptotic protein survivin.ResultsSurvivin protein was expressed by 26 of 26 tumors. In HLA-A2+patients, circulating cytotoxic T lymphocytes (CTLs) specific for survivin were detected by peptide/major histocompatibility complex tetramer analysis in the blood of eight of nine children with HR-NBL at the time of diagnosis. Rather than being selectively rendered anergic in vivo, circulating survivin-specific CTLs were highly functional as shown by cytotoxicity and interferon gamma enzyme-linked immunospot assays in six of nine patients. Survivin-specific CD107a mobilization by T cells was found in five of five patients. By immunohistochemistry, tumor-infiltrating T cells were few or absent in 26 of 26 tumors.ConclusionChildren with HR-NBL harbor robust cellular immune responses to the universal tumor antigen survivin at the time of diagnosis, but intratumoral T cells are strikingly rare, suggesting a failure of cellular immunosurveillance. Efforts to develop novel therapies that increase T-cell trafficking into tumor nests are warranted.
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Affiliation(s)
- Christina M Coughlin
- Abramson Family Cancer Research Institute, Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA
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30
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Abstract
Recent studies have demonstrated a critical role for the oocyte in proliferation and differentiation of granulosa cells and expansion of the cumulus oophorus in vitro. The purpose of this study was to determine if steroid production by cumulus granulosa cells was also modulated by oocytes. Mouse oocyte-cumulus cell complexes (intact) and complexes from which the oocytes were removed microsurgically (oocytectomized; OOX) were cultured for 24 h in the presence or absence of follicle-stimulating hormone (FSH; 150 ng/ml), testosterone (T; 5 x 10(-7) M) or both. Oocytectomy had no effect on the ability of cumulus cells to produce progesterone or estradiol in control cultures or in response to T. However, OOX complexes produced 17- and 36-fold more progesterone than intact complexes when cultured in the presence of FSH or FSH+T, respectively. Oocyte-conditioned medium (maximum 1 oocyte/2 microliters) had no effect on progesterone production by intact cumulus complexes, but reduced the progesterone production by OOX complexes by 75%. This inhibition was directly proportional to the number of oocytes used to condition the medium. Oocytectomy caused a slight decrease (29%) in estradiol production by complexes in the presence of FSH and T; however, OOX complexes in oocyte-conditioned medium produced almost twice as much estradiol as complexes in unconditioned medium. These results indicate that mouse oocytes secrete a factor(s) that inhibits progesterone and stimulates estradiol production by cumulus granulosa cells.
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Affiliation(s)
- B C Vanderhyden
- Department of Medicine, University of Ottawa, Ontario, Canada
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31
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Hornstein MD, Cohen JN, Thomas PP, Gleason RE, Friedman AJ, Mutter GL. The effect of consecutive day inseminations on semen characteristics in an intrauterine insemination program. Fertil Steril 1992; 58:433-5. [PMID: 1633917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This study demonstrates a statistically significant decrease in semen volume, sperm concentration, and sperm motility in samples obtained on the 2nd day of consecutive day inseminations in an IUI program. This diminution in semen characteristics persists despite sperm washing. The effects of a second ejaculation on semen parameters in oligospermic and asthenospermic men were mixed. Thus, in general, sperm-washing procedures cannot overcome the natural reduction in semen quality produced by frequent ejaculations. Clinicians may wish to use this information in timing IUI cycle inseminations.
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Affiliation(s)
- M D Hornstein
- Department of Obstetrics and Gynecology, Brigham and Women's Hospital, Boston, Massachusetts 02115
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