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Oss-Ronen L, Moskovitz NT, Levi H, Levin L, Cohen I. CASZ1 Regulates Late Epidermal Differentiation. J Invest Dermatol 2024:S0022-202X(24)00363-4. [PMID: 38763175 DOI: 10.1016/j.jid.2024.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 05/21/2024]
Affiliation(s)
- Liat Oss-Ronen
- The Shraga Segal Department of Microbiology, Immunology and Genetics; Faculty of Health Sciences; Ben-Gurion University of the Negev; Beer Sheva 84105; Israel
| | - Nili Tickotsky Moskovitz
- Bioinformatics Core Facility, Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer Sheva 84105; Israel
| | - Hilla Levi
- The Shraga Segal Department of Microbiology, Immunology and Genetics; Faculty of Health Sciences; Ben-Gurion University of the Negev; Beer Sheva 84105; Israel
| | - Liron Levin
- Bioinformatics Core Facility, Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer Sheva 84105; Israel
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology and Genetics; Faculty of Health Sciences; Ben-Gurion University of the Negev; Beer Sheva 84105; Israel.
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Hadar N, Porgador O, Cohen I, Levi H, Dolgin V, Yogev Y, Sued-Hendrickson S, Shelef I, Didkovsky E, Eskin-Schwartz M, Birk OS. Heterozygous THBS2 pathogenic variant causes Ehlers-Danlos syndrome with prominent vascular features in humans and mice. Eur J Hum Genet 2024; 32:550-557. [PMID: 38433265 PMCID: PMC11061164 DOI: 10.1038/s41431-024-01559-1] [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: 09/27/2023] [Revised: 11/17/2023] [Accepted: 01/30/2024] [Indexed: 03/05/2024] Open
Abstract
Ehlers-Danlos syndromes (EDS) are a group of connective tissue disorders caused by mutations in collagen and collagen-interacting genes. We delineate a novel form of EDS with vascular features through clinical and histopathological phenotyping and genetic studies of a three-generation pedigree, displaying an apparently autosomal dominant phenotype of joint hypermobility and frequent joint dislocations, atrophic scarring, prolonged bleeding time and age-related aortic dilatation and rupture. Coagulation tests as well as platelet counts and function were normal. Reticular dermis displayed highly disorganized collagen fibers and transmission electron microscopy (TEM) revealed abnormally shaped fibroblasts and endothelial cells, with high amount and irregular shape of extracellular matrix (ECM) substance, especially near blood vessels. Genetic analysis unraveled a heterozygous mutation in THBS2 (NM_003247.5:c.2686T>C, p.Cys896Arg). We generated CRISPR/Cas9 knock-in (KI) mice, bearing the heterozygous human mutation in the mouse ortholog. The KI mice demonstrated phenotypic traits correlating with those observed in the human subjects, as evidenced by morphologic, histologic, and TEM analyses, in conjunction with bleeding time assays. Our findings delineate a novel form of human EDS with classical-like elements combined with vascular features, caused by a heterozygous THBS2 missense mutation. We further demonstrate a similar phenotype in heterozygous THBS2Cys896Arg KI mice, in line with previous studies in Thbs2 homozygous null-mutant mice. Notably, THBS2 encodes Thrombospondin-2, a secreted homotrimeric matricellular protein that directly binds the ECM-shaping Matrix Metalloproteinase 2 (MMP2), mediating its clearance. THBS2 loss-of-function attenuates MMP2 clearance, enhancing MMP2-mediated proteoglycan cleavage, causing ECM abnormalities similar to those seen in the human and mouse disease we describe.
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Affiliation(s)
- Noam Hadar
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Omri Porgador
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Hilla Levi
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Vadim Dolgin
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Yuval Yogev
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Sufa Sued-Hendrickson
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ilan Shelef
- Department of Radiology, Soroka Medical Center, and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Elena Didkovsky
- Department of Pathology, Rabin Medical Center, Petah-Tikva, and Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Marina Eskin-Schwartz
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel.
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel.
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Krishnamohan M, Kaplanov I, Maudi-Boker S, Yousef M, Machluf-Katz N, Cohen I, Elkabets M, Titus J, Bersudsky M, Apte RN, Voronov E, Braiman A. Tumor Cell-Associated IL-1α Affects Breast Cancer Progression and Metastasis in Mice through Manipulation of the Tumor Immune Microenvironment. Int J Mol Sci 2024; 25:3950. [PMID: 38612760 PMCID: PMC11011794 DOI: 10.3390/ijms25073950] [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: 02/25/2024] [Revised: 03/25/2024] [Accepted: 03/30/2024] [Indexed: 04/14/2024] Open
Abstract
IL-1α is a dual function cytokine that affects inflammatory and immune responses and plays a pivotal role in cancer. The effects of intracellular IL-1α on the development of triple negative breast cancer (TNBC) in mice were assessed using the CRISPR/Cas9 system to suppress IL-1α expression in 4T1 breast cancer cells. Knockout of IL-1α in 4T1 cells modified expression of multiple genes, including downregulation of cytokines and chemokines involved in the recruitment of tumor-associated pro-inflammatory cells. Orthotopical injection of IL-1α knockout (KO) 4T1 cells into BALB/c mice led to a significant decrease in local tumor growth and lung metastases, compared to injection of wild-type 4T1 (4T1/WT) cells. Neutrophils and myeloid-derived suppressor cells were abundant in tumors developing after injection of 4T1/WT cells, whereas more antigen-presenting cells were observed in the tumor microenvironment after injection of IL-1α KO 4T1 cells. This switch correlated with increased infiltration of CD3+CD8+ and NKp46+cells. Engraftment of IL-1α knockout 4T1 cells into immunodeficient NOD.SCID mice resulted in more rapid tumor growth, with increased lung metastasis in comparison to engraftment of 4T1/WT cells. Our results suggest that tumor-associated IL-1α is involved in TNBC progression in mice by modulating the interplay between immunosuppressive pro-inflammatory cells vs. antigen-presenting and cytotoxic cells.
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Affiliation(s)
- Mathumathi Krishnamohan
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (M.K.); (M.E.); (J.T.); (M.B.)
| | - Irena Kaplanov
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (M.K.); (M.E.); (J.T.); (M.B.)
| | - Sapir Maudi-Boker
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (M.K.); (M.E.); (J.T.); (M.B.)
| | - Muhammad Yousef
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (M.K.); (M.E.); (J.T.); (M.B.)
| | - Noy Machluf-Katz
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (M.K.); (M.E.); (J.T.); (M.B.)
| | - Idan Cohen
- Cancer Center, Emek Medical Center, Afula 18101, Israel;
| | - Moshe Elkabets
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (M.K.); (M.E.); (J.T.); (M.B.)
| | - Jaison Titus
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (M.K.); (M.E.); (J.T.); (M.B.)
| | - Marina Bersudsky
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (M.K.); (M.E.); (J.T.); (M.B.)
| | - Ron N. Apte
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (M.K.); (M.E.); (J.T.); (M.B.)
| | - Elena Voronov
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (M.K.); (M.E.); (J.T.); (M.B.)
| | - Alex Braiman
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; (M.K.); (M.E.); (J.T.); (M.B.)
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Schwartz B, Levi H, Menon G, Maria R, Upcher A, Kotlovski Y, Oss-Ronen L, Cohen I. ZNF750 Regulates Skin Barrier Function by Driving Cornified Envelope and Lipid Processing Pathways. J Invest Dermatol 2024; 144:296-306.e3. [PMID: 37660780 DOI: 10.1016/j.jid.2023.08.009] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/02/2023] [Accepted: 08/16/2023] [Indexed: 09/05/2023]
Abstract
The epidermis is a constantly renewing stratified epithelial tissue that provides essential protective barrier functions. The major barrier is located at the outermost layers of the epidermis, formed by terminally differentiated keratinocytes reinforced by proteins of their cornified envelope and sequestered intercellular lipids. Disruptions to epidermal differentiation characterize various skin disorders. ZNF750 is an epithelial transcription factor essential for in vitro keratinocyte differentiation, whose truncating mutation in humans causes autosomal dominant psoriasis-like skin disease. In this study, we utilized an epidermal-specific Znf750 conditional knockout mouse model to uncover the role ZNF750 plays in epidermal development. We show that deletion of Znf750 in the developing skin does not block epidermal differentiation completely, suggesting in vivo compensatory feedback mechanisms, although it does result in impaired barrier function and perinatal lethality. Molecular dissection revealed ultrastructural defects in the differentiated layers of the epidermis, accompanied by alterations in the expression of ZNF750-dependent genes encoding key cornified envelope precursor proteins and lipid-processing enzymes, including gene subsets known to be mutated in human skin diseases involving impaired barrier function. Together, our findings provide molecular insights into the pathogenesis of human skin disease by linking ZNF750 to a subset of epidermal differentiation genes involved in barrier formation pathways.
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Affiliation(s)
- Bar Schwartz
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Hilla Levi
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | | | - Raquel Maria
- Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Alexander Upcher
- Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Yulia Kotlovski
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Liat Oss-Ronen
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.
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Eskin-Schwartz M, Dolgin V, Didkovsky E, Aminov I, Pikovsky A, Hadar N, Kristal E, Ling G, Cohen I, Zilberman U, Birk OS. CLDN1 Arg81His founder variant causes ichthyosis, leukocyte vacuoles, alopecia, and sclerosing cholangitis (ILVASC) syndrome in Moroccan Jews. Clin Genet 2024; 105:44-51. [PMID: 37814412 DOI: 10.1111/cge.14432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 09/17/2023] [Accepted: 09/26/2023] [Indexed: 10/11/2023]
Abstract
Neonatal ichthyosis and sclerosing cholangitis syndrome (NISCH), also known as ichthyosis, leukocyte vacuoles, alopecia, and sclerosing cholangitis (ILVASC), is an extremely rare disease of autosomal recessive inheritance, resulting from loss of function of the tight junction protein claudin-1. Its clinical presentation is highly variable, and is characterized by liver and ectodermal involvement. Although most ILVASC cases described to date were attributed to homozygous truncating variants in CLDN1, a single missense variant CLDN1 p.Arg81His, associated with isolated skin ichthyosis phenotype, has been recently reported in a family of Moroccan Jewish descent. We now describe seven patients with ILVASC, originating from four non consanguineous families of North African Jewish ancestry (including one previously reported family), harboring CLDN1 p.Arg81His variant, and broaden the phenotypic spectrum attributed to this variant to include teeth, hair, and liver/bile duct involvement, characteristic of ILVASC. Furthermore, we provide additional evidence for pathogenicity of the CLDN1 p.Arg81His variant by transmission electron microscopy of the affected skin, revealing distorted tight junction architecture, and show through haplotype analysis in the vicinity of the CLDN1 gene, that this variant represents a founder variant in Jews of Moroccan descent with an estimated carrier frequency of 1:220.
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Affiliation(s)
- Marina Eskin-Schwartz
- Soroka University Medical Center, Genetics Institute, Beer-Sheva, Israel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Vadim Dolgin
- The Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Elena Didkovsky
- Rabin Medical Center, Institute of Pathology, Petah Tiqwa, Israel
| | - Ilana Aminov
- The Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Anna Pikovsky
- Oral Medicine Unit, Department of Oral and Maxillofacial Surgery, Soroka University Medical Center, Beer-Sheva, Israel
| | - Noam Hadar
- The Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Eyal Kristal
- Saban Pediatric Medical Center, Beer-Sheva, Israel
| | - Galina Ling
- Saban Pediatric Medical Center, Beer-Sheva, Israel
- Pediatric Gastroenterology Unit, Beer-Sheva, Israel
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Uri Zilberman
- Pediatric Dental Unit, Barzilai Medical Center, Ashkelon, Israel
| | - Ohad S Birk
- Soroka University Medical Center, Genetics Institute, Beer-Sheva, Israel
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- The Morris Kahn Laboratory of Human Genetics, National Center for Rare Diseases, Faculty of Health Sciences and National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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Hadar N, Schreiber R, Eskin-Schwartz M, Kristal E, Shubinsky G, Ling G, Cohen I, Geylis M, Nahum A, Yogev Y, Birk OS. X-linked C1GALT1C1 mutation causes atypical hemolytic uremic syndrome. Eur J Hum Genet 2023; 31:1101-1107. [PMID: 36599939 PMCID: PMC10545727 DOI: 10.1038/s41431-022-01278-5] [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: 10/13/2022] [Revised: 12/11/2022] [Accepted: 12/15/2022] [Indexed: 01/05/2023] Open
Abstract
Hemolytic-uremic syndrome (HUS), mostly secondary to infectious diseases, is a common cause of acute kidney injury in children. It is characterized by progressive acute kidney failure due to severe thrombotic microangiopathy, associated with nonimmune, Coombs-negative hemolytic anemia and thrombocytopenia. HUS is caused mostly by Shiga toxin-producing E. Coli, and to a lesser extent by Streptococcus pneumonia. In Streptococcus pneumonia HUS (pHUS), bacterial neuraminidase A exposes masked O-glycan sugar residues on erythrocytes, known as the T antigen, triggering a complement cascade causing thrombotic microangiopathy. Atypical HUS (aHUS) is a life-threatening genetic form of the disease, whose molecular mechanism is only partly understood. Through genetic studies, we demonstrate a novel X-linked form of aHUS that is caused by a de-novo missense mutation in C1GALT1C1:c.266 C > T,p.(T89I), encoding a T-synthase chaperone essential for the proper formation and incorporation of the T antigen on erythrocytes. We demonstrate the presence of exposed T antigen on the surface of mutant erythrocytes, causing aHUS in a mechanism similar to that suggested in pHUS. Our findings suggest that both aHUS caused by mutated C1GALT1C1 and pHUS are mediated by the lectin-complement-pathway, not comprehensively studied in aHUS. We thus delineate a shared molecular basis of aHUS and pHUS, highlighting possible therapeutic opportunities.
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Affiliation(s)
- Noam Hadar
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ruth Schreiber
- Pediatric Nephrology Clinic and Pediatric Department A, Soroka University Medical Center, Beer-Sheva, Israel
| | - Marina Eskin-Schwartz
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel
| | - Eyal Kristal
- Pediatric Ambulatory Unit, Soroka University Medical Center, Beer-Sheva, Israel
| | - George Shubinsky
- Flow Cytometry Unit, Soroka University Medical Center, Beer-Sheva, Israel
| | - Galina Ling
- Pediatric Ambulatory Unit, Soroka University Medical Center, Beer-Sheva, Israel
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Michael Geylis
- Pediatric Nephrology Clinic and Pediatric Department A, Soroka University Medical Center, Beer-Sheva, Israel
| | - Amit Nahum
- Pediatric Nephrology Clinic and Pediatric Department A, Soroka University Medical Center, Beer-Sheva, Israel
- The Primary Immunodeficiency Research Laboratory and Pediatric Department A, Soroka University Medical Center, Beer Sheva, Israel
| | - Yuval Yogev
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics at the National Institute of Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.
- Genetics Institute, Soroka University Medical Center, Beer-Sheva, Israel.
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel.
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Cohen I, Campisi-Pfinto S, Rozenberg O, Colodner R, Bar-Sela G. The Humoral Response of Patients With Cancer to Breakthrough COVID-19 Infection or the Fourth BNT162b2 Vaccine Dose. Oncologist 2023; 28:e225-e227. [PMID: 36856804 PMCID: PMC10078898 DOI: 10.1093/oncolo/oyad003] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 06/30/2022] [Accepted: 12/22/2022] [Indexed: 03/02/2023] Open
Abstract
Since January 2022 in Israel, high-risk populations with underlying health conditions were advised to receive a fourth dose of the BNT162b2 vaccine (Pfizer-BioNTech) against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). We monitored vaccine-induced immunity among oncology patients undergoing systemic anti-cancer therapy before and after the 4th-BNT162b2-dose. Three groups of patients were included in the study: those who received 3rd-BNT162b2-dose and had no breakthrough infection (control), those who received 3rd-BNT162b2-dose and had the breakthrough infection, and those who received the 4th-BNT162b2-dose and had no breakthrough infection. Anti-SARS-CoV-2 immunoglobulin-G (IgG) levels of the control group exhibited a rapid decrease over time, whereas IgG titers of patients with breakthrough-infections or patients vaccinated with the 4th-BNT162b2-dose were considerably elevated, consistent with the capacity of the second booster to induce anti-SARS-CoV-2 IgG levels. Additionally, oncology patients' humoral immune response was significantly greater after breakthrough-infection than in response to the 4th dose of BNT162b2.
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Affiliation(s)
- Idan Cohen
- Cancer Center, Emek Medical Center, Afula, Israel
| | | | - Orit Rozenberg
- Emek Medical Center, Clalit Clinical Laboratories, Afula, Israel
| | - Raul Colodner
- Emek Medical Center, Clalit Clinical Laboratories, Afula, Israel
| | - Gil Bar-Sela
- Cancer Center, Emek Medical Center, Afula, Israel.,Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
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Haspel C, Cohen I. The SSSS scheme: a method for calculating multiple scattering of electromagnetic radiation by a collection of sparsely spaced spherical scatterers of Mie-scattering size based on first principles. Appl Opt 2022; 61:8563-8577. [PMID: 36255988 DOI: 10.1364/ao.465701] [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] [Received: 06/01/2022] [Accepted: 08/30/2022] [Indexed: 06/16/2023]
Abstract
We present a method for calculating multiple scattering of electromagnetic radiation by a collection of sparsely spaced spherical scatterers (SSSS) of Mie-scattering size based on first principles rather than radiative transfer theory. In this respect, our methodology is conceptually similar to the superposition T-matrix method. However, our implementation, which we call the SSSS scheme, differs in a number of respects. Overall, the SSSS scheme is simpler, it is better suited numerically to sparse spacing, and the computer memory required is only linearly dependent on the total number of scatterers. We suggest that the SSSS scheme would be particularly useful for examining the effects of different spatial configurations of drops within water clouds in Earth's atmosphere and would also be useful in other fields of research in which the exact configuration of a collection of sparsely spaced Mie-sized scatterers is important.
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Oss-Ronen L, Sarusi T, Cohen I. Histone Mono-Ubiquitination in Transcriptional Regulation and Its Mark on Life: Emerging Roles in Tissue Development and Disease. Cells 2022; 11:cells11152404. [PMID: 35954248 PMCID: PMC9368181 DOI: 10.3390/cells11152404] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/26/2022] [Accepted: 08/02/2022] [Indexed: 02/06/2023] Open
Abstract
Epigenetic regulation plays an essential role in driving precise transcriptional programs during development and homeostasis. Among epigenetic mechanisms, histone mono-ubiquitination has emerged as an important post-transcriptional modification. Two major histone mono-ubiquitination events are the mono-ubiquitination of histone H2A at lysine 119 (H2AK119ub), placed by Polycomb repressive complex 1 (PRC1), and histone H2B lysine 120 mono-ubiquitination (H2BK120ub), placed by the heteromeric RNF20/RNF40 complex. Both of these events play fundamental roles in shaping the chromatin epigenetic landscape and cellular identity. In this review we summarize the current understandings of molecular concepts behind histone mono-ubiquitination, focusing on their recently identified roles in tissue development and pathologies.
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Affiliation(s)
| | | | - Idan Cohen
- Correspondence: ; Tel.: +972-8-6477593; Fax: +972-8-6477626
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Li M, Flora P, Pu H, Bar C, Silva J, Cohen I, Galbo P, Liu H, Yu X, Jin J, Koseki H, D’Orazio J, Zheng D, Ezhkova E. 712 UV-induced reduction in polycomb repression promotes epidermal pigmentation. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Aviram J, Lewitus GM, Vysotski Y, Amna MA, Ouryvaev A, Procaccia S, Cohen I, Leibovici A, Akria L, Goncharov D, Mativ N, Kauffman A, Shai A, Bar-Sela G, Meiri D. The Effectiveness and Safety of Medical Cannabis for Treating Cancer Related Symptoms in Oncology Patients. Front Pain Res (Lausanne) 2022; 3:861037. [PMID: 35669038 PMCID: PMC9163497 DOI: 10.3389/fpain.2022.861037] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [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: 01/24/2022] [Accepted: 04/25/2022] [Indexed: 12/12/2022] Open
Abstract
The use of medical cannabis (MC) to treat cancer-related symptoms is rising. However, there is a lack of long-term trials to assess the benefits and safety of MC treatment in this population. In this work, we followed up prospectively and longitudinally on the effectiveness and safety of MC treatment. Oncology patients reported on multiple symptoms before and after MC treatment initiation at one-, three-, and 6-month follow-ups. Oncologists reported on the patients' disease characteristics. Intention-to-treat models were used to assess changes in outcomes from baseline. MC treatment was initiated by 324 patients and 212, 158 and 126 reported at follow-ups. Most outcome measures improved significantly during MC treatment for most patients (p < 0.005). Specifically, at 6 months, total cancer symptoms burden declined from baseline by a median of 18%, from 122 (82-157) at baseline to 89 (45-138) at endpoint (-18.98; 95%CI= -26.95 to -11.00; p < 0.001). Reported adverse effects were common but mostly non-serious and remained stable during MC treatment. The results of this study suggest that MC treatment is generally safe for oncology patients and can potentially reduce the burden of associated symptoms with no serious MC-related adverse effects.
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Affiliation(s)
- Joshua Aviram
- Faculty of Biology, Biology Department, Technion-Israel Institute of Technology, Haifa, Israel
| | - Gil M. Lewitus
- Faculty of Biology, Biology Department, Technion-Israel Institute of Technology, Haifa, Israel
| | - Yelena Vysotski
- Faculty of Biology, Biology Department, Technion-Israel Institute of Technology, Haifa, Israel
| | | | - Anton Ouryvaev
- Department of Oncology, Galilee Medical Center, Nahariya, Israel
| | - Shiri Procaccia
- Faculty of Biology, Biology Department, Technion-Israel Institute of Technology, Haifa, Israel
| | - Idan Cohen
- Cancer Center, HaEmek Medical Center, Afula, Israel
| | - Anca Leibovici
- Department of Oncology, Galilee Medical Center, Nahariya, Israel
| | - Luiza Akria
- Department of Oncology, Galilee Medical Center, Nahariya, Israel
| | | | - Neomi Mativ
- Department of Oncology, Galilee Medical Center, Nahariya, Israel
| | - Avia Kauffman
- Department of Oncology, Galilee Medical Center, Nahariya, Israel
| | - Ayelet Shai
- Department of Oncology, Galilee Medical Center, Nahariya, Israel
- Azrielly Faculty of Medicine, Bar Ilan University, Zafed, Israel
| | - Gil Bar-Sela
- Cancer Center, HaEmek Medical Center, Afula, Israel
- Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - David Meiri
- Faculty of Biology, Biology Department, Technion-Israel Institute of Technology, Haifa, Israel
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12
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Prasad M, Zorea J, Jagadeeshan S, Shnerb AB, Mathukkada S, Bouaoud J, Michon L, Novoplansky O, Badarni M, Cohen L, Yegodayev KM, Tzadok S, Rotblat B, Brezina L, Mock A, Karabajakian A, Fayette J, Cohen I, Cooks T, Allon I, Dimitstein O, Joshua B, Kong D, Voronov E, Scaltriti M, Carmi Y, Conde-Lopez C, Hess J, Kurth I, Morris LGT, Saintigny P, Elkabets M. MEK1/2 inhibition transiently alters the tumor immune microenvironment to enhance immunotherapy efficacy against head and neck cancer. J Immunother Cancer 2022; 10:jitc-2021-003917. [PMID: 35292516 PMCID: PMC8928405 DOI: 10.1136/jitc-2021-003917] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [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] [Accepted: 02/06/2022] [Indexed: 11/05/2022] Open
Abstract
Background Although the mitogen-activated protein kinases (MAPK) pathway is hyperactive in head and neck cancer (HNC), inhibition of MEK1/2 in HNC patients has not shown clinically meaningful activity. Therefore, we aimed to characterize the effect of MEK1/2 inhibition on the tumor microenvironment (TME) of MAPK-driven HNC, elucidate tumor-host interaction mechanisms facilitating immune escape on treatment, and apply rationale-based therapy combination immunotherapy and MEK1/2 inhibitor to induce tumor clearance. Methods Mouse syngeneic tumors and xenografts experiments were used to analyze tumor growth in vivo. Single-cell cytometry by time of flight, flow cytometry, and tissue stainings were used to profile the TME in response to trametinib (MEK1/2 inhibitor). Co-culture of myeloid-derived suppressor cells (MDSC) with CD8+ T cells was used to measure immune suppression. Overexpression of colony-stimulating factor-1 (CSF-1) in tumor cells was used to show the effect of tumor-derived CSF-1 on sensitivity to trametinib and anti-programmed death- 1 (αPD-1) in mice. In HNC patients, the ratio between CSF-1 and CD8A was measured to test the association with clinical benefit to αPD-1 and αPD-L1 treatment. Results Using preclinical HNC models, we demonstrated that treatment with trametinib delays HNC initiation and progression by reducing tumor cell proliferation and enhancing the antitumor immunity of CD8+ T cells. Activation of CD8+ T cells by supplementation with αPD-1 antibody eliminated tumors and induced an immune memory in the cured mice. Mechanistically, an early response to trametinib treatment sensitized tumors to αPD-1-supplementation by attenuating the expression of tumor-derived CSF-1, which reduced the abundance of two CSF-1R+CD11c+ MDSC populations in the TME. In contrast, prolonged treatment with trametinib abolished the antitumor activity of αPD-1, because tumor cells undergoing the epithelial to mesenchymal transition in response to trametinib restored CSF-1 expression and recreated an immune-suppressive TME. Conclusion Our findings provide the rationale for testing the trametinib/αPD-1 combination in HNC and highlight the importance of sensitizing tumors to αPD-1 by using MEK1/2 to interfere with the tumor–host interaction. Moreover, we describe the concept that treatment of cancer with a targeted therapy transiently induces an immune-active microenvironment, and supplementation of immunotherapy during this time further activates the antitumor machinery to cause tumor elimination.
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Affiliation(s)
- Manu Prasad
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Jonathan Zorea
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Sankar Jagadeeshan
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Avital B Shnerb
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Sooraj Mathukkada
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Jebrane Bouaoud
- Department of Translational Medicine Oncology, Centre Léon Bérard, Lyon 69373, France.,Univ Lyon, Université Claude Bernard Lyon, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France
| | - Lucas Michon
- Univ Lyon, Université Claude Bernard Lyon, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France
| | - Ofra Novoplansky
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Mai Badarni
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Limor Cohen
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ksenia M Yegodayev
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Sapir Tzadok
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Barak Rotblat
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Libor Brezina
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Andreas Mock
- Department of Medical Oncology, Heidelberg University Hospital, Heidelberg, Germany.,Division of Translational Medical Oncology, NCT Heidelberg, German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Andy Karabajakian
- Department of Translational Medicine Oncology, Centre Léon Bérard, Lyon 69373, France.,Univ Lyon, Université Claude Bernard Lyon, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France.,Department of Medical Oncology, Centre Léon Bérard, Lyon 69373, France
| | - Jérôme Fayette
- Department of Translational Medicine Oncology, Centre Léon Bérard, Lyon 69373, France.,Univ Lyon, Université Claude Bernard Lyon, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France.,Department of Medical Oncology, Centre Léon Bérard, Lyon 69373, France
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Tomer Cooks
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Irit Allon
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Institute of Pathology, Barzilai University Medical Center, Ashkelon, Israel
| | - Orr Dimitstein
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Department of Otolaryngology-Head & Neck Surgery, Soroka University Medical Center, Beer-Sheva, Israel
| | - Benzion Joshua
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Department of Otorhinolaryngology and Head & Neck Surgery, Barzilai Medical Center, Ashkelon, Israel
| | - Dexin Kong
- School of Pharmaceutical Sciences, Tianjin Medical University, Tianjin, China
| | - Elena Voronov
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Maurizio Scaltriti
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York City, New York, USA
| | - Yaron Carmi
- Department of Pathology, Tel Aviv University, Tel Aviv, Israel
| | - Cristina Conde-Lopez
- Division of Radiooncology-Radiobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jochen Hess
- Section Experimental and Translational Head and Neck Oncology, Department of Otolaryngology, Head and Neck Surgery, University Hospital Heidelberg, Heidelberg, Germany.,Research Group Molecular Mechanisms of Head and Neck Tumors, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ina Kurth
- Division of Radiooncology-Radiobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Luc G T Morris
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Pierre Saintigny
- Department of Translational Medicine Oncology, Centre Léon Bérard, Lyon 69373, France.,Univ Lyon, Université Claude Bernard Lyon, INSERM 1052, CNRS 5286, Centre Léon Bérard, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France.,Department of Medical Oncology, Centre Léon Bérard, Lyon 69373, France
| | - Moshe Elkabets
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Ben-Gurion University of the Negev, Beer-Sheva, Israel .,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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13
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Khoury M, Cohen I, Bar-Sela G. “The Two Sides of the Same Coin”—Medical Cannabis, Cannabinoids and Immunity: Pros and Cons Explained. Pharmaceutics 2022; 14:pharmaceutics14020389. [PMID: 35214123 PMCID: PMC8877666 DOI: 10.3390/pharmaceutics14020389] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/01/2022] [Accepted: 02/04/2022] [Indexed: 02/01/2023] Open
Abstract
Cannabis, as a natural medicinal remedy, has long been used for palliative treatment to alleviate the side effects caused by diseases. Cannabis-based products isolated from plant extracts exhibit potent immunoregulatory properties, reducing chronic inflammatory processes and providing much needed pain relief. They are a proven effective solution for treatment-based side effects, easing the resulting symptoms of the disease. However, we discuss the fact that cannabis use may promote the progression of a range of malignancies, interfere with anti-cancer immunotherapy, or increase susceptibility to viral infections and transmission. Most cannabis preparations or isolated active components cause an overall potent immunosuppressive impact among users, posing a considerable hazard to patients with suppressed or compromised immune systems. In this review, current knowledge and perceptions of cannabis or cannabinoids and their impact on various immune-system components will be discussed as the “two sides of the same coin” or “double-edged sword”, referring to something that can have both favorable and unfavorable consequences. We propose that much is still unknown about adverse reactions to its use, and its integration with medical treatment should be conducted cautiously with consideration of the individual patient, effector cells, microenvironment, and the immune system.
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Affiliation(s)
- Mona Khoury
- Cancer Center, Emek Medical Center, 21 Yitzhak Rabin Blvd, Afula 1834111, Israel; (M.K.); (I.C.)
- Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 3200002, Israel
| | - Idan Cohen
- Cancer Center, Emek Medical Center, 21 Yitzhak Rabin Blvd, Afula 1834111, Israel; (M.K.); (I.C.)
| | - Gil Bar-Sela
- Cancer Center, Emek Medical Center, 21 Yitzhak Rabin Blvd, Afula 1834111, Israel; (M.K.); (I.C.)
- Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 3200002, Israel
- Oncology & Hematology Division, Emek Medical Center, Yitshak Rabin Boulevard 21, Afula 1834111, Israel
- Correspondence: ; Tel.: +972-4-6495725; Fax: +972-4-6163992
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14
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Li MY, Flora P, Pu H, Bar C, Silva J, Cohen I, Galbo PM, Liu H, Yu X, Jin J, Koseki H, D'Orazio JA, Zheng D, Ezhkova E. UV-induced reduction in Polycomb repression promotes epidermal pigmentation. Dev Cell 2021; 56:2547-2561.e8. [PMID: 34473941 PMCID: PMC8521440 DOI: 10.1016/j.devcel.2021.08.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 03/28/2021] [Revised: 07/08/2021] [Accepted: 08/06/2021] [Indexed: 12/11/2022]
Abstract
Ultraviolet (UV) radiation is a prime environmental stressor that our epidermis is exposed to on a daily basis. To avert UV-induced damage, epidermal stem cells (EpSCs) become pigmented via a process of heterotypic interaction between melanocytes and EpSCs; however, the molecular mechanisms of this interaction are not well understood. In this study, we show that the function of a key chromatin regulator, the Polycomb complex, was reduced upon UV exposure in human and mouse epidermis. Genetic ablation of key Polycomb subunits in murine EpSCs, mimicking depletion upon UV exposure, results in an increased number of epidermal melanocytes and subsequent epidermal pigmentation. Genome-wide transcriptional and chromatin studies show that Polycomb regulates the expression of UV-responsive genes and identifies type II collagen (COL2A1) as a critical secreted regulator of melanogenesis and epidermal pigmentation. Together, our findings show how UV exposure induces Polycomb-mediated changes in EpSCs to affect melanocyte behavior and promote epidermal pigmentation.
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Affiliation(s)
- Meng-Yen Li
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Pooja Flora
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Hong Pu
- The Markey Cancer Center, Department of Toxicology and Cancer Biology, Department of Pediatrics, University of Kentucky College of Medicine, Lexington, KY 40506, USA
| | - Carmit Bar
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Jose Silva
- Department of Pathology, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029, USA
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Phillip M Galbo
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Hequn Liu
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Xufen Yu
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Jian Jin
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Haruhiko Koseki
- Laboratory for Developmental Genetics, RIKEN Center for Integrative Medical Sciences (RIKEN-IMS) 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan; AMED-CREST, 1-7-22 Suehiro-cho Tsurumi-ku, Yokohama 230-0045, Japan
| | - John A D'Orazio
- The Markey Cancer Center, Department of Toxicology and Cancer Biology, Department of Pediatrics, University of Kentucky College of Medicine, Lexington, KY 40506, USA
| | - Deyou Zheng
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA; Departments of Genetics, Neurology, and Neuroscience, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Elena Ezhkova
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA.
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15
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Flora P, Dalal G, Cohen I, Ezhkova E. Polycomb Repressive Complex(es) and Their Role in Adult Stem Cells. Genes (Basel) 2021; 12:1485. [PMID: 34680880 PMCID: PMC8535826 DOI: 10.3390/genes12101485] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/13/2021] [Accepted: 09/22/2021] [Indexed: 12/31/2022] Open
Abstract
Populations of resident stem cells (SCs) are responsible for maintaining, repairing, and regenerating adult tissues. In addition to having the capacity to generate all the differentiated cell types of the tissue, adult SCs undergo long periods of quiescence within the niche to maintain themselves. The process of SC renewal and differentiation is tightly regulated for proper tissue regeneration throughout an organisms' lifetime. Epigenetic regulators, such as the polycomb group (PcG) of proteins have been implicated in modulating gene expression in adult SCs to maintain homeostatic and regenerative balances in adult tissues. In this review, we summarize the recent findings that elucidate the composition and function of the polycomb repressive complex machinery and highlight their role in diverse adult stem cell compartments.
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Affiliation(s)
- Pooja Flora
- Department of Cell, Developmental, and Regenerative Biology, Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA;
| | - Gil Dalal
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel;
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel;
| | - Elena Ezhkova
- Department of Cell, Developmental, and Regenerative Biology, Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA;
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16
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Oss-Ronen L, Cohen I. Epigenetic regulation and signalling pathways in Merkel cell development. Exp Dermatol 2021; 30:1051-1064. [PMID: 34152646 DOI: 10.1111/exd.14415] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 12/04/2020] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 12/20/2022]
Abstract
Merkel cells are specialized epithelial cells connected to afferent nerve endings responsible for light-touch sensations, formed at specific locations in touch-sensitive regions of the mammalian skin. Although Merkel cells are descendants of the epidermal lineage, little is known about the mechanisms responsible for the development of these unique mechanosensory cells. Recent studies have highlighted that the Polycomb group (PcG) of proteins play a significant role in spatiotemporal regulation of Merkel cell formation. In addition, several of the major signalling pathways involved in skin development have been shown to regulate Merkel cell development as well. Here, we summarize the current understandings of the role of developmental regulators in Merkel cell formation, including the interplay between the epigenetic machinery and key signalling pathways, and the lineage-specific transcription factors involved in the regulation of Merkel cell development.
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Affiliation(s)
- Liat Oss-Ronen
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva, Israel
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17
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Cohen I, Bar C, Liu H, Valdes VJ, Zhao D, Galbo PM, Silva JM, Koseki H, Zheng D, Ezhkova E. Polycomb complexes redundantly maintain epidermal stem cell identity during development. Genes Dev 2021; 35:354-366. [PMID: 33602871 PMCID: PMC7919412 DOI: 10.1101/gad.345363.120] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [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: 10/01/2020] [Accepted: 01/04/2021] [Indexed: 12/22/2022]
Abstract
In this study, Cohen et al. sought to understand the functional contribution of PRC1 and PRC2, which largely overlap in their genomic binding and cooperate to establish repressive chromatin domains demarcated by H2AK119ub and H3K27me3, to gene repression. By using the developing murine epidermis as a paradigm, they uncovered a previously unappreciated functional redundancy between Polycomb complexes, and their findings show how PRC1 and PRC2 function as two independent counterparts, providing a repressive safety net that protects and preserves lineage identity. Polycomb repressive complex 1 (PRC1) and PRC2 are critical epigenetic developmental regulators. PRC1 and PRC2 largely overlap in their genomic binding and cooperate to establish repressive chromatin domains demarcated by H2AK119ub and H3K27me3. However, the functional contribution of each complex to gene repression has been a subject of debate, and understanding of its physiological significance requires further studies. Here, using the developing murine epidermis as a paradigm, we uncovered a previously unappreciated functional redundancy between Polycomb complexes. Coablation of PRC1 and PRC2 in embryonic epidermal progenitors resulted in severe defects in epidermal stratification, a phenotype not observed in the single PRC1-null or PRC2-null epidermis. Molecular dissection indicated a loss of epidermal identity that was coupled to a strong derepression of nonlineage transcription factors, otherwise repressed by either PRC1 or PRC2 in the absence of its counterpart. Ectopic expression of subsets of PRC1/2-repressed nonepidermal transcription factors in wild-type epidermal stem cells was sufficient to suppress epidermal identity genes, highlighting the importance of functional redundancy between PRC1 and PRC2. Altogether, our studies show how PRC1 and PRC2 function as two independent counterparts, thereby providing a repressive safety net that protects and preserves lineage identity.
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Affiliation(s)
- Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Carmit Bar
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Hequn Liu
- Department of Genetics, Albert Einstein College of Medicine, Bronx, New York 10461, USA
| | - Victor J Valdes
- Department of Cell Biology and Development, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Dejian Zhao
- Department of Genetics, Albert Einstein College of Medicine, Bronx, New York 10461, USA.,Yale Center for Genome Analysis, Yale University, New Haven, Connecticut 06510, USA.,Department of Genetics, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Phillip M Galbo
- Department of Genetics, Albert Einstein College of Medicine, Bronx, New York 10461, USA
| | - Jose M Silva
- Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Haruhiko Koseki
- Laboratory for Developmental Genetics, RIKEN Center for Integrative Medical Sciences (RIKEN-IMS), Tsurumi-ku, Yokohama 230-0045, Japan.,AMED-CREST, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Deyou Zheng
- Department of Genetics, Albert Einstein College of Medicine, Bronx, New York 10461, USA.,Department of Neurology, Albert Einstein College of Medicine, Bronx, New York 10461, USA.,Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461, USA
| | - Elena Ezhkova
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
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Abu-Amna M, Salti T, Khoury M, Cohen I, Bar-Sela G. Medical Cannabis in Oncology: a Valuable Unappreciated Remedy or an Undesirable Risk? Curr Treat Options Oncol 2021; 22:16. [PMID: 33439370 DOI: 10.1007/s11864-020-00811-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2020] [Indexed: 01/11/2023]
Abstract
OPINION STATEMENT The use of the cannabis plant by cancer patients has been rising significantly in the past few years worldwide, primarily driven by public demand. There is an obvious need for more reliable scientific data, pharmacology information, a better understanding of its mode of action, and available clinical evidence supporting its robust use. Physicians must complete a thorough medical assessment, screening for potential drugs, or treatment contraindications before allowing its consumption. In light of the growing popularity of cannabis usage, it is highly essential that, in the near future, the medical community will be able to provide practical recommendations and explicit guidelines, including doses, and that cannabinoid concentrations in the used products are defined regarding its prescription before any medical procedure involving its usage is authorized. Here, we review and describe the favorable outcomes demonstrating the benefits of cannabis as an adjunctive treatment to conventional medicines for chemotherapy-induced nausea, vomiting, and cancer-related pain (primarily refractory chronic or neuropathic pain). Although not yet substantial enough, the treatment of anorexia, insomnia, depression, and anxiety is also seemingly favorable. To date, reports regarding its anti-neoplastic effects or its potent immunosuppressive properties influencing response to immunotherapy are still very conflicting and controversial. Thus, with the current state of evidence, cannabis use is not advisable as initial treatment, as an adjunct or an advanced line of care. In the coming years, we expect that preclinical data and animal models will shift to the clinical arena, and more patients will be recruited for clinical trials, and their reports will advance the field. Thus, physicians should prescribe cannabis only if careful clarification and consideration is provided together with a follow-up response evaluation.
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Affiliation(s)
- Mahmoud Abu-Amna
- Cancer Center, Emek Medical Center, 21 Yitzhak Rabin Blvd, 1834111, Afula, Israel
| | - Talal Salti
- Cancer Center, Emek Medical Center, 21 Yitzhak Rabin Blvd, 1834111, Afula, Israel.,Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, 320002, Haifa, Israel
| | - Mona Khoury
- Cancer Center, Emek Medical Center, 21 Yitzhak Rabin Blvd, 1834111, Afula, Israel.,Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, 320002, Haifa, Israel
| | - Idan Cohen
- Cancer Center, Emek Medical Center, 21 Yitzhak Rabin Blvd, 1834111, Afula, Israel
| | - Gil Bar-Sela
- Cancer Center, Emek Medical Center, 21 Yitzhak Rabin Blvd, 1834111, Afula, Israel. .,Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, 320002, Haifa, Israel.
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Aviram J, Lewitus GM, Vysotski Y, Uribayev A, Procaccia S, Cohen I, Leibovici A, Abo-Amna M, Akria L, Goncharov D, Mativ N, Kauffman A, Shai A, Hazan O, Bar-Sela G, Meiri D. Short-Term Medical Cannabis Treatment Regimens Produced Beneficial Effects among Palliative Cancer Patients. Pharmaceuticals (Basel) 2020; 13:ph13120435. [PMID: 33265945 PMCID: PMC7761379 DOI: 10.3390/ph13120435] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 11/14/2020] [Revised: 11/25/2020] [Accepted: 11/27/2020] [Indexed: 12/14/2022] Open
Abstract
In the last decade the use of medical cannabis (MC) for palliative cancer treatment has risen. However, the choice between products is arbitrary and most patients are using Tetrahydrocannabinol (THC)-dominant cannabis products. In this study, we aimed to assess the short-term outcomes of MC treatment prescribed by oncologists in relation to the type of cannabis they receive. A comparative analysis was used to assess the differences in treatment effectiveness and safety between THC-dominant (n = 56, 52%), cannabidiol (CBD)-dominant (n = 19, 18%), and mixed (n = 33, 30%) MC treatments. Oncology patients (n = 108) reported on multiple symptoms in baseline questionnaires, initiated MC treatment, and completed a one-month follow-up. Most parameters improved significantly from baseline, including pain intensity, affective and sensory pain, sleep quality and duration, cancer distress, and both physical and psychological symptom burden. There was no significant difference between the three MC treatments in the MC-related safety profile. Generally, there were no differences between the three MC treatments in pain intensity and in most secondary outcomes. Unexpectedly, CBD-dominant oil treatments were similar to THC-dominant treatments in their beneficial effects for most secondary outcomes. THC-dominant treatments showed significant superiority in their beneficial effect only in sleep duration compared to CBD-dominant treatments. This work provides evidence that, though patients usually consume THC-dominant products, caregivers should also consider CBD-dominant products as a useful treatment for cancer-related symptoms.
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Affiliation(s)
- Joshua Aviram
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel; (J.A.); (G.M.L.); (Y.V.); (S.P.); (O.H.)
| | - Gil M. Lewitus
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel; (J.A.); (G.M.L.); (Y.V.); (S.P.); (O.H.)
| | - Yelena Vysotski
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel; (J.A.); (G.M.L.); (Y.V.); (S.P.); (O.H.)
| | - Anton Uribayev
- Department of Oncology, Galilee Medical Center, Nahariya 22100, Israel; (A.U.); (A.L.); (L.A.); (D.G.); (N.M.); (A.K.); (A.S.)
| | - Shiri Procaccia
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel; (J.A.); (G.M.L.); (Y.V.); (S.P.); (O.H.)
| | - Idan Cohen
- Cancer Center, Emek Medical Center, Afula 18101, Israel; (I.C.); (M.A.-A.)
| | - Anca Leibovici
- Department of Oncology, Galilee Medical Center, Nahariya 22100, Israel; (A.U.); (A.L.); (L.A.); (D.G.); (N.M.); (A.K.); (A.S.)
| | - Mahmud Abo-Amna
- Cancer Center, Emek Medical Center, Afula 18101, Israel; (I.C.); (M.A.-A.)
| | - Luiza Akria
- Department of Oncology, Galilee Medical Center, Nahariya 22100, Israel; (A.U.); (A.L.); (L.A.); (D.G.); (N.M.); (A.K.); (A.S.)
| | - Dmitry Goncharov
- Department of Oncology, Galilee Medical Center, Nahariya 22100, Israel; (A.U.); (A.L.); (L.A.); (D.G.); (N.M.); (A.K.); (A.S.)
| | - Neomi Mativ
- Department of Oncology, Galilee Medical Center, Nahariya 22100, Israel; (A.U.); (A.L.); (L.A.); (D.G.); (N.M.); (A.K.); (A.S.)
| | - Avia Kauffman
- Department of Oncology, Galilee Medical Center, Nahariya 22100, Israel; (A.U.); (A.L.); (L.A.); (D.G.); (N.M.); (A.K.); (A.S.)
| | - Ayelet Shai
- Department of Oncology, Galilee Medical Center, Nahariya 22100, Israel; (A.U.); (A.L.); (L.A.); (D.G.); (N.M.); (A.K.); (A.S.)
| | - Or Hazan
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel; (J.A.); (G.M.L.); (Y.V.); (S.P.); (O.H.)
| | - Gil Bar-Sela
- Cancer Center, Emek Medical Center, Afula 18101, Israel; (I.C.); (M.A.-A.)
- Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 32000, Israel
- Correspondence: (G.B.-S.); (D.M.); Tel.: +972-4-6495723 (G.B.-S.); +972-77-8871680 or +972-525330031 (D.M.)
| | - David Meiri
- Faculty of Biology, Technion-Israel Institute of Technology, Haifa 32000, Israel; (J.A.); (G.M.L.); (Y.V.); (S.P.); (O.H.)
- Correspondence: (G.B.-S.); (D.M.); Tel.: +972-4-6495723 (G.B.-S.); +972-77-8871680 or +972-525330031 (D.M.)
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Bar-Sela G, Cohen I, Avisar A, Loven D, Aharon A. Circulating blood extracellular vesicles as a tool to assess endothelial injury and chemotherapy toxicity in adjuvant cancer patients. PLoS One 2020; 15:e0240994. [PMID: 33108394 PMCID: PMC7591065 DOI: 10.1371/journal.pone.0240994] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 03/09/2020] [Accepted: 10/06/2020] [Indexed: 01/08/2023] Open
Abstract
Extracellular vesicles (EVs) are subcellular membrane blebs that include exosomes and microparticles, which represent a potential source for cancer biomarker discovery. We assess EVs characteristics as a tool to evaluate the endothelial and anti-tumor treatment injury during adjuvant chemotherapy in breast (BC) and colon cancer (CC) patients. Blood samples were taken from 29 BC and 25 CC patients before and after chemotherapy, as well as from healthy control donors (HC). Circulating blood EVs were isolated and characterized by size/concentration, membrane antigens for cell origin, thrombogenicity, and protein content. We observed higher EVs concentration and particle size in CC patients after chemotherapy compared with HC. Higher levels of endothelial EVs (CD144-positive) and vascular endothelial growth factor receptor 1 (VEGFR1), apparently as an indication of endothelial dysfunction, were found in all cancer patients, regardless of a given treatment, compared to HC. Levels of EVs labeled CD62E, CD34+41-, the lymphocyte markers CD11+ and CD-14+, Annexin-V, and the coagulation proteins TF and TFPI, however, sometimes demonstrate significant differences between patients, although HC did not show significant differences between patients pre- and post-chemotherapy. Most importantly, increasing levels of EVs encapsulated Angiostatin were found in patients with CC, while chemotherapy treatment leads to its notable rise in circulating blood EVs. Our results demonstrate the potential of EVs encapsulated Angiostatin as a tool to evaluate endothelial damage during adjuvant chemotherapy in BC and CC patients.
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Affiliation(s)
- Gil Bar-Sela
- Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
- Cancer Center, Emek Medical Center, Afula, Israel
| | - Idan Cohen
- Cancer Center, Emek Medical Center, Afula, Israel
| | | | - David Loven
- Cancer Center, Emek Medical Center, Afula, Israel
| | - Anat Aharon
- Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
- Hematology and Bone Marrow Transplantation, Sourasky Medical Center, Tel Aviv, Israel
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21
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Bar C, Cohen I, Zhao D, Pothula V, Litskevitch A, Koseki H, Zheng D, Ezhkova E. Polycomb Repressive Complex 1 Controls Maintenance of Fungiform Papillae by Repressing Sonic Hedgehog Expression. Cell Rep 2020; 28:257-266.e5. [PMID: 31269445 PMCID: PMC6921245 DOI: 10.1016/j.celrep.2019.06.011] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 04/22/2019] [Accepted: 06/03/2019] [Indexed: 12/28/2022] Open
Abstract
How tissue patterns are formed and maintained are fundamental questions. The murine tongue epithelium, a paradigm for tissue patterning, consists of an array of specialized fungiform papillae structures that harbor taste cells. The formation of fungiform papillae is preceded by pronounced spatial changes in gene expression, in which taste cell genes such as Shh, initially diffused in lingual epithelial progenitors, become restricted to taste cells when their specification progresses. However, the requirement of spatial restriction of taste cell gene expression for patterning and formation of fungiform papillae is unknown. Here, we show that a chromatin regulator, Polycomb repressive complex (PRC) 1, is required for proper maintenance of fungiform papillae by repressing Shh and preventing ectopic SHH signaling in non-taste cells. Ablation of SHH signaling in PRC1-null non-taste cells rescues the maintenance of taste cells. Altogether, our studies exemplify how epigenetic regulation establishes spatial gene expression patterns necessary for specialized niche structures. Formation and maintenance of patterns are critical for tissue development. Bar et al. show that PRC1, an epigenetic regulator, is critical for lingual papillae development. Specifically, PRC1 regulates maintenance of the developing fungiform papillae, harboring taste cells, by repressing Shh expression in the non-gustatory epithelium surrounding taste cells.
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Affiliation(s)
- Carmit Bar
- Black Family Stem Cell Institute, The Tisch Cancer Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Idan Cohen
- Black Family Stem Cell Institute, The Tisch Cancer Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Dejian Zhao
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Venu Pothula
- Black Family Stem Cell Institute, The Tisch Cancer Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Anna Litskevitch
- Department of Molecular & Cell Biology, University of California, Berkeley, 142 Life Sciences Addition, Berkeley, CA 94720, USA
| | - Haruhiko Koseki
- Laboratory for Developmental Genetics, RIKEN Center for Integrative Medical Sciences (RIKEN-IMS), 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan; AMED-CREST, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Deyou Zheng
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA; Department of Neurology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA; Department of Neuroscience, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Elena Ezhkova
- Black Family Stem Cell Institute, The Tisch Cancer Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA.
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22
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Salti T, Khazim K, Haddad R, Campisi-Pinto S, Bar-Sela G, Cohen I. Glucose Induces IL-1α-Dependent Inflammation and Extracellular Matrix Proteins Expression and Deposition in Renal Tubular Epithelial Cells in Diabetic Kidney Disease. Front Immunol 2020; 11:1270. [PMID: 32733443 PMCID: PMC7358427 DOI: 10.3389/fimmu.2020.01270] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 09/21/2019] [Accepted: 05/19/2020] [Indexed: 12/13/2022] Open
Abstract
Diabetes mellitus is linked with metabolic stress that induces cellular damage and can provoke renal inflammation and fibrotic responses that eventually lead to chronic kidney disease. Because the inflammasome, interleukin 1 (IL-1), IL-1α/IL-β, and IL-1R are central elements of kidney inflammation and pharmacological IL-1R antagonist (IL-1Ra) was shown to prevent or even reverse diabetic nephropathy (DN) in animal models, we explored the intrinsic expression of IL-1 molecules in kidney tissue of DN patients as regulators of renal inflammation. We used biopsies taken from DN patients and controls and show a high level of IL-1α expression in renal tubular epithelial cells, whereas both IL-1 agonistic molecules (i.e., IL-1α and IL-1β) were devoid of the glomeruli. Human proximal tubular kidney HK-2 cells exposed to high glucose (HG) gradually increase the expression of IL-1α but not IL-1β and induce the expression and deposition of extracellular matrix (ECM) proteins. We further demonstrate that in vitro ectopic addition of recombinant IL-1α in low glucose concentration leads to a similar effect as in HG, while supplementing excess amounts of IL-1Ra in HG significantly attenuates the ECM protein overexpression and deposition. Accordingly, inhibition of IL-1α cleaving protease calpain, but not caspapse-1, also strongly reduces ECM protein production by HK-2 cells. Collectively, we demonstrate that IL-1α and not IL-1β, released from renal tubular cells is the key inflammatory molecule responsible for the renal inflammation in DN. Our result suggests that the clinical use of IL-1Ra in DN should be promoted over the individual neutralization of IL-1α or IL-1β in order to achieve better blocking of IL-1R signaling.
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Affiliation(s)
- Talal Salti
- Galilee Medical Center, Research Institute, Nahariya, Israel
| | - Khaled Khazim
- Galilee Medical Center, Research Institute, Nahariya, Israel.,Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel.,Department of Nephrology and Hypertension, Galilee Medical Center, Nahariya, Israel
| | - Rami Haddad
- Galilee Medical Center, Research Institute, Nahariya, Israel
| | | | - Gil Bar-Sela
- Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.,Cancer Center, Emek Medical Center, Afula, Israel
| | - Idan Cohen
- Cancer Center, Emek Medical Center, Afula, Israel
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23
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Cohen I, Bar C, Ezhkova E. Activity of PRC1 and Histone H2AK119 Monoubiquitination: Revising Popular Misconceptions. Bioessays 2020; 42:e1900192. [PMID: 32196702 PMCID: PMC7585675 DOI: 10.1002/bies.201900192] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/12/2020] [Indexed: 12/21/2022]
Abstract
Polycomb group proteins are evolutionary conserved chromatin-modifying complexes, essential for the regulation of developmental and cell-identity genes. Polycomb-mediated transcriptional regulation is provided by two multi-protein complexes known as Polycomb repressive complex 1 (PRC1) and 2 (PRC2). Recent studies positioned PRC1 as a foremost executer of Polycomb-mediated transcriptional control. Mammalian PRC1 complexes can form multiple sub-complexes that vary in their core and accessory subunit composition, leading to fascinating and diverse transcriptional regulatory mechanisms employed by PRC1 complexes. These mechanisms include PRC1-catalytic activity toward monoubiquitination of histone H2AK119, a well-established hallmark of PRC1 complexes, whose importance has been long debated. In this review, the central roles that PRC1-catalytic activity plays in transcriptional repression are emphasized and the recent evidence supporting a role for PRC1 complexes in gene activation is discussed.
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Affiliation(s)
- Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology and Genetics; Faculty of Health Science; Ben-Gurion University of the Negev; Beer Sheva 84105; Israel
- These authors contributed equally to this work
| | - Carmit Bar
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology; Icahn School of Medicine at Mount Sinai; 1 Gustave L. Levy Place, New York, NY 10029; USA
- These authors contributed equally to this work
| | - Elena Ezhkova
- The Shraga Segal Department of Microbiology, Immunology and Genetics; Faculty of Health Science; Ben-Gurion University of the Negev; Beer Sheva 84105; Israel
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Irwin R, Feeney E, Secchieri C, Galesso D, Cohen I, Oliviero F, Ramonda R, Bonassar L. Distinct tribological endotypes of pathological human synovial fluid reveal characteristic biomarkers and variation in efficacy of viscosupplementation at reducing local strains in articular cartilage. Osteoarthritis Cartilage 2020; 28:492-501. [PMID: 32105835 PMCID: PMC7707424 DOI: 10.1016/j.joca.2020.02.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 02/03/2020] [Accepted: 02/06/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Viscosupplementation has been used for decades to treat mild to moderate osteoarthritis, yet it is unknown if the lubricating function of different pathological synovial fluids (SF) vary, or if they respond differentially to viscosupplementation. The objectives of this study were to (i) evaluate the friction coefficients and induced shear strains in articular cartilage when lubricated with pathological SF, (ii) identify the effect of hyaluronic acid (HA) supplementation on friction coefficients and shear strains, and (iii) identify SF biomarkers that correlate with lubricating function. METHOD Human pathological SF was grouped by white blood cell count (inflammatory: >2000 cells/mm3, n = 6; non-inflammatory: <2000 cells/mm3, n = 6). Compositional analyses for lubricin and cytokines were performed. Friction coefficients and local tissue shear strain measurements were coupled using new, microscale rheological analyses by lubricating neonatal bovine cartilage explants with SF alone and in a 1:1 ratio with HA (Hymovis®). RESULTS Friction coefficients were not significantly different between the inflammatory and non-inflammatory pathologies (p = 0.09), and were poorly correlated with peak tissue strains at the cartilage articular surface (R2 = 0.34). A subset of inflammatory SF samples induced higher tissue strains, and HA supplementation was most effective at lowering friction and tissue strains in this inflammatory subset. Across all pathologies there were clear relationships between polymorphonuclear neutrophil (PMN), IL-8, and lubricin concentrations with cartilage tissue strains. CONCLUSION These results suggest that pathological SF is characterized by distinct tribological endotypes where SF lubricating behaviors are differentially modified by viscosupplementation and are identifiable by biomarkers.
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Affiliation(s)
- R.M. Irwin
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
| | - E. Feeney
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
| | | | | | - I. Cohen
- Department of Physics, Cornell University, Ithaca, NY, USA
| | - F. Oliviero
- Rheumatology Unit, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - R. Ramonda
- Rheumatology Unit, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - L.J. Bonassar
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA,Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, USA,Address correspondence and reprint requests to: L.J. Bonassar, Department of Biomedical Engineering, Cornell University, 237 Tower Road, Ithaca, NY, 14853, USA. Tel.: 607-255-9381. (L.J. Bonassar)
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25
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Tau N, Cohen I, Barash Y, Klang E. Free abdominal gas on computed tomography in the emergency department: aetiologies and association between amount of free gas and mortality. Ann R Coll Surg Engl 2020; 102:581-589. [PMID: 32233866 DOI: 10.1308/rcsann.2020.0057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
INTRODUCTION Free abdominal gas is an important finding with major clinical implications. However, data on the aetiologies and prognosis of patients with free gas are scarce. Our primary aim was to describe the sources of free abdominal gas on emergency department (ED) computed tomography (CT). The secondary aim was to evaluate the association between the amount of free gas and all-cause mortality. METHODS All patients who underwent CT in the ED between February 2012 and February 2019 with free abdominal gas were included in the study. A scoring system was used to assess the amount of free gas: small - gas bubbles; medium - any gas pocket ≤2cm in diameter; large - any gas pocket >2cm. Data were collected from laboratory and clinical assessment regarding the source of free gas and all-cause mortality. RESULTS A total of 372 patients had free abdominal gas. Colonic diverticulitis was the most common aetiology among those with a small or medium amount of free gas (81/250 [32.4%] and 12/71 [16.9%] respectively). For patients with a large amount of gas, peptic disease was the most common aetiology (11/51 [21.6%]). Three-quarters of the patients (280/372, 75.2%) had the source of free gas identified during ED admission. Ninety-day mortality rates were 7.2%, 9.9% and 21.6% for patients with small, medium and large amounts of gas respectively (p=0.007). CONCLUSIONS Colonic diverticulitis was the most common source of free abdominal gas and peptic disease was the most common cause of a large amount of free gas. Mortality rates correlated with the amount of gas and were significantly higher in patients with a large amount.
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Affiliation(s)
- N Tau
- Sheba Medical Center, Ramat Gan, , Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - I Cohen
- Sheba Medical Center, Ramat Gan, , Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Y Barash
- Sheba Medical Center, Ramat Gan, , Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - E Klang
- Sheba Medical Center, Ramat Gan, , Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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26
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Perez Y, Menascu S, Cohen I, Kadir R, Basha O, Shorer Z, Romi H, Meiri G, Rabinski T, Ofir R, Yeger-Lotem E, Birk OS. RSRC1 mutation affects intellect and behaviour through aberrant splicing and transcription, downregulating IGFBP3. Brain 2019. [PMID: 29522154 DOI: 10.1093/brain/awy045] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
RSRC1, whose polymorphism is associated with altered brain function in schizophrenia, is a member of the serine and arginine rich-related protein family. Through homozygosity mapping and whole exome sequencing we show that RSRC1 mutation causes an autosomal recessive syndrome of intellectual disability, aberrant behaviour, hypotonia and mild facial dysmorphism with normal brain MRI. Further, we show that RSRC1 is ubiquitously expressed, and that the RSRC1 mutation triggers nonsense-mediated mRNA decay of the RSRC1 transcript in patients' fibroblasts. Short hairpin RNA (shRNA)-mediated lentiviral silencing and overexpression of RSRC1 in SH-SY5Y cells demonstrated that RSRC1 has a role in alternative splicing and transcription regulation. Transcriptome profiling of RSRC1-silenced cells unravelled specific differentially expressed genes previously associated with intellectual disability, hypotonia and schizophrenia, relevant to the disease phenotype. Protein-protein interaction network modelling suggested possible intermediate interactions by which RSRC1 affects gene-specific differential expression. Patient-derived induced pluripotent stem cells, differentiated into neural progenitor cells, showed expression dynamics similar to the RSRC1-silenced SH-SY5Y model. Notably, patient neural progenitor cells had 9.6-fold downregulated expression of IGFBP3, whose brain expression is affected by MECP2, aberrant in Rett syndrome. Interestingly, Igfbp3-null mice have behavioural impairment, abnormal synaptic function and monoaminergic neurotransmission, likely correlating with the disease phenotype.
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Affiliation(s)
- Yonatan Perez
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Shay Menascu
- Multiple Sclerosis Center, Sheba Medical Center, Tel Hashomer, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Idan Cohen
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University of the Negev, Beer Sheva 84105, Israel.,Department of Developmental and Regenerative Biology, Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Rotem Kadir
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Omer Basha
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University of the Negev, Beer Sheva 84105, Israel.,Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Zamir Shorer
- Pediatric Neurology unit, Division of Pediatrics, Soroka University Medical Center, Faculty of Health Sciences, Ben Gurion University of the Negev, Beer Sheva 84101, Israel
| | - Hila Romi
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University of the Negev, Beer Sheva 84105, Israel.,Genetics Institute, Soroka University Medical Center, Ben Gurion University of the Negev, Beer Sheva 84101, Israel
| | - Gal Meiri
- Pre-School Psychiatry Unit, Soroka University Medical Center, Beer Sheva 84101, Israel
| | - Tatiana Rabinski
- Regenerative Medicine and Stem Cell Research Center, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Rivka Ofir
- Regenerative Medicine and Stem Cell Research Center, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Esti Yeger-Lotem
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University of the Negev, Beer Sheva 84105, Israel.,Genetics Institute, Soroka University Medical Center, Ben Gurion University of the Negev, Beer Sheva 84101, Israel
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Litmanovich A, Khazim K, Hassan K, Cohen I, Salti T, Kristal B. FP717DECIPHERING NEUTROPHIL DYSFUNCTION IN HEMODIALYSIS PATIENTS. Nephrol Dial Transplant 2019. [DOI: 10.1093/ndt/gfz106.fp717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - Khaled Khazim
- Bar Ilan University, School Of Medicine, Safed, Israel
| | | | - Idan Cohen
- Galilee Medical Center, Nahariya, Israel
| | - Talal Salti
- Bar Ilan University, School Of Medicine, Safed, Israel
| | - Batya Kristal
- Bar Ilan University, School Of Medicine, Safed, Israel
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28
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Miroshnikova YA, Cohen I, Ezhkova E, Wickström SA. Epigenetic gene regulation, chromatin structure, and force-induced chromatin remodelling in epidermal development and homeostasis. Curr Opin Genet Dev 2019; 55:46-51. [PMID: 31112907 DOI: 10.1016/j.gde.2019.04.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 04/05/2019] [Accepted: 04/15/2019] [Indexed: 01/14/2023]
Abstract
The skin epidermis is a constantly renewing stratified epithelium that provides essential protective barrier functions throughout life. Epidermal stratification is governed by a step-wise differentiation program that requires precise spatiotemporal control of gene expression. How epidermal self-renewal and differentiation are regulated remains a fundamental open question. Cell-intrinsic and cell-extrinsic mechanisms that modify chromatin structure and interactions have been identified as key regulators of epidermal differentiation and stratification. Here, we will review the recent advances in our understanding of how chromatin modifiers, tissue-specific transcription factors, and force-induced nuclear remodeling processes function to shape chromatin and to control epidermal tissue development and homeostasis.
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Affiliation(s)
- Yekaterina A Miroshnikova
- Helsinki Institute of Life Science, University of Helsinki, Biomedicum Helsinki, Haartmaninkatu 8, 00290, Finland; Wihuri Research Institute, University of Helsinki, Finland; Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Finland; Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Idan Cohen
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Elena Ezhkova
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA.
| | - Sara A Wickström
- Helsinki Institute of Life Science, University of Helsinki, Biomedicum Helsinki, Haartmaninkatu 8, 00290, Finland; Wihuri Research Institute, University of Helsinki, Finland; Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, Finland; Max Planck Institute for Biology of Ageing, Cologne, Germany.
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29
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Nguyen M, Cohen I, Valdes J, Xu Z, Bar C, Dauber K, Tsai P, Zhao D, Zheng D, Hsu Y, Chen T, Ezhkova E. 869 The specification of Merkel cell in the back skin and glabrous paw skin is controlled by FGFR2-meditated signaling. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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Cohen I, Zhao D, Menon G, Nakayama M, Koseki H, Zheng D, Ezhkova E. 287 Polycomb repressive complex 1 (PRC1) preserves epidermal tissue integrity independently of PRC2. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.363] [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: 11/16/2022]
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31
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Nguyen MB, Valdes VJ, Cohen I, Pothula V, Zhao D, Zheng D, Ezhkova E. Dissection of Merkel cell formation in hairy and glabrous skin reveals a common requirement for FGFR2-mediated signalling. Exp Dermatol 2019; 28:374-382. [PMID: 30758073 DOI: 10.1111/exd.13901] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 02/04/2019] [Accepted: 02/05/2019] [Indexed: 12/30/2022]
Abstract
Merkel cells are mechanosensory cells involved in tactile discrimination. Merkel cells have been primarily studied in the murine back skin, where they are found in specialized structures called touch domes located around primary hair follicles. Yet, little is known about the morphogenesis of Merkel cells in areas of the skin devoid of hair, such as the glabrous paw skin. Here, we describe Merkel cell formation in the glabrous paw skin during embryogenesis. We first found in the glabrous paw skin that Merkel cells were specified at E15.5, 24 hours later, compared to in the back skin. Additionally, by performing lineage-tracing experiments, we found that unlike in the back skin, SOX9(+) cells do not give rise to Merkel cells in the glabrous paw skin. Finally, we compared the transcriptomes of Merkel cells in the back and the glabrous paw skin and showed that they are similar. Genetic and transcriptome studies showed that the formation of Merkel cells in both regions was controlled by similar regulators. Among them was FGFR2, an upstream factor of MAPK signalling that was reported to have a critical function in Merkel cell formation in the back skin. Here, we showed that FGFR2 is also required for Merkel cell development in the glabrous paw skin. Taken together, our results demonstrate that Merkel cells in the murine back skin and glabrous paw skin are similar, and even though their formation is controlled by a common genetic programme, their precursor cells might differ.
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Affiliation(s)
- Minh Binh Nguyen
- Department of Cell, Developmental, and Regenerative Biology, Black Family Stem Cell Institute, The Tisch Cancer Institute, New York City, New York.,Icahn School of Medicine at Mount Sinai, New York City, New York
| | - Victor Julian Valdes
- Department of Cell, Developmental, and Regenerative Biology, Black Family Stem Cell Institute, The Tisch Cancer Institute, New York City, New York.,Icahn School of Medicine at Mount Sinai, New York City, New York
| | - Idan Cohen
- Department of Cell, Developmental, and Regenerative Biology, Black Family Stem Cell Institute, The Tisch Cancer Institute, New York City, New York.,Icahn School of Medicine at Mount Sinai, New York City, New York
| | - Venu Pothula
- Department of Cell, Developmental, and Regenerative Biology, Black Family Stem Cell Institute, The Tisch Cancer Institute, New York City, New York.,Icahn School of Medicine at Mount Sinai, New York City, New York
| | - Dejian Zhao
- Department of Genetics, Albert Einstein College of Medicine, Bronx, New York
| | - Deyou Zheng
- Departments of Genetics, Neurology, and Neuroscience, Albert Einstein College of Medicine, Bronx, New York
| | - Elena Ezhkova
- Department of Cell, Developmental, and Regenerative Biology, Black Family Stem Cell Institute, The Tisch Cancer Institute, New York City, New York.,Icahn School of Medicine at Mount Sinai, New York City, New York
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32
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Torbert RB, Burch JL, Phan TD, Hesse M, Argall MR, Shuster J, Ergun RE, Alm L, Nakamura R, Genestreti KJ, Gershman DJ, Paterson WR, Turner DL, Cohen I, Giles BL, Pollock CJ, Wang S, Chen LJ, Stawarz JE, Eastwood JP, Hwang KJ, Farrugia C, Dors I, Vaith H, Mouikis C, Ardakani A, Mauk BH, Fuselier SA, Russell CT, Strangeway RJ, Moore TE, Drake JF, Shay MA, Khotyaintsev YV, Lindqvist PA, Baumjohann W, Wilder FD, Ahmadi N, Dorelli JC, Avanov LA, Oka M, Baker DN, Fennell JF, Blake JB, Jaynes AN, Le Contel O, Petrinec SM, Lavraud B, Saito Y. Electron-scale dynamics of the diffusion region during symmetric magnetic reconnection in space. Science 2018; 362:1391-1395. [PMID: 30442767 DOI: 10.1126/science.aat2998] [Citation(s) in RCA: 158] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 11/06/2018] [Indexed: 11/02/2022]
Abstract
Magnetic reconnection is an energy conversion process that occurs in many astrophysical contexts including Earth's magnetosphere, where the process can be investigated in situ by spacecraft. On 11 July 2017, the four Magnetospheric Multiscale spacecraft encountered a reconnection site in Earth's magnetotail, where reconnection involves symmetric inflow conditions. The electron-scale plasma measurements revealed (i) super-Alfvénic electron jets reaching 15,000 kilometers per second; (ii) electron meandering motion and acceleration by the electric field, producing multiple crescent-shaped structures in the velocity distributions; and (iii) the spatial dimensions of the electron diffusion region with an aspect ratio of 0.1 to 0.2, consistent with fast reconnection. The well-structured multiple layers of electron populations indicate that the dominant electron dynamics are mostly laminar, despite the presence of turbulence near the reconnection site.
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Affiliation(s)
- R B Torbert
- University of New Hampshire, Durham, NH, USA. .,Southwest Research Institute (SwRI), San Antonio, TX, USA
| | - J L Burch
- Southwest Research Institute (SwRI), San Antonio, TX, USA
| | - T D Phan
- University of California, Berkeley, CA, USA
| | - M Hesse
- Southwest Research Institute (SwRI), San Antonio, TX, USA.,University of Bergen, Bergen, Norway
| | - M R Argall
- University of New Hampshire, Durham, NH, USA
| | - J Shuster
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - R E Ergun
- University of Colorado Laboratory for Atmospheric and Space Physics, Boulder, CO, USA
| | - L Alm
- Swedish Institute of Space Physics, Uppsala, Sweden
| | - R Nakamura
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - K J Genestreti
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - D J Gershman
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - W R Paterson
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - D L Turner
- Aerospace Corporation, El Segundo, CA, USA
| | - I Cohen
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA
| | - B L Giles
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - C J Pollock
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - S Wang
- University of Maryland, College Park, MD, USA
| | - L-J Chen
- NASA Goddard Space Flight Center, Greenbelt, MD, USA.,University of Maryland, College Park, MD, USA
| | - J E Stawarz
- Blackett Laboratory, Imperial College London, London, UK
| | - J P Eastwood
- Blackett Laboratory, Imperial College London, London, UK
| | - K J Hwang
- Southwest Research Institute (SwRI), San Antonio, TX, USA
| | - C Farrugia
- University of New Hampshire, Durham, NH, USA
| | - I Dors
- University of New Hampshire, Durham, NH, USA
| | - H Vaith
- University of New Hampshire, Durham, NH, USA
| | - C Mouikis
- University of New Hampshire, Durham, NH, USA
| | - A Ardakani
- University of New Hampshire, Durham, NH, USA
| | - B H Mauk
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD, USA
| | - S A Fuselier
- Southwest Research Institute (SwRI), San Antonio, TX, USA.,University of Texas, San Antonio, TX, USA
| | - C T Russell
- University of California, Los Angeles, CA, USA
| | | | - T E Moore
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - J F Drake
- University of Maryland, College Park, MD, USA
| | - M A Shay
- University of Delaware, Newark, DE, USA
| | | | | | - W Baumjohann
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - F D Wilder
- University of Colorado Laboratory for Atmospheric and Space Physics, Boulder, CO, USA
| | - N Ahmadi
- University of Colorado Laboratory for Atmospheric and Space Physics, Boulder, CO, USA
| | - J C Dorelli
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - L A Avanov
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - M Oka
- University of California, Berkeley, CA, USA
| | - D N Baker
- University of Colorado Laboratory for Atmospheric and Space Physics, Boulder, CO, USA
| | | | - J B Blake
- Aerospace Corporation, El Segundo, CA, USA
| | | | - O Le Contel
- Laboratoire de Physique des Plasmas, CNRS/Ecole Polytechnique/Sorbonne Université/Univ. Paris Sud/Observatoire de Paris, Paris, France
| | - S M Petrinec
- Lockheed Martin Advanced Technology Center, Palo Alto, CA, USA
| | - B Lavraud
- Institut de Recherche en Astrophysique et Planétologie, CNRS, Centre National d'Etudes Spatiales, Université de Toulouse, Toulouse, France
| | - Y Saito
- Institute for Space and Astronautical Sciences, Sagamihara, Japan
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33
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Cohen I, Zhao D, Menon G, Nakayama M, Koseki H, Zheng D, Ezhkova E. PRC1 preserves epidermal tissue integrity independently of PRC2. Genes Dev 2018; 33:55-60. [PMID: 30567998 PMCID: PMC6317312 DOI: 10.1101/gad.319939.118] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 11/05/2018] [Indexed: 12/21/2022]
Abstract
Cohen et al. show that, despite extensive genomic cobinding, PRC1 is essential for epidermal integrity, whereas PRC2 is dispensable. Polycomb-repressive complex 1 (PRC1) and PRC2 are critical chromatin regulators of gene expression and tissue development. Here, we show that despite extensive genomic cobinding, PRC1 is essential for epidermal integrity, whereas PRC2 is dispensable. Loss of PRC1 resulted in blistering skin, reminiscent of human skin fragility syndromes. Conversely, PRC1 does not restrict epidermal stratification during skin morphogenesis, whereas PRC2 does. Molecular dissection demonstrated that PRC1 functions with PRC2 to silence/dampen expression of adhesion genes. In contrast, PRC1 promotes expression of critical epidermal adhesion genes independently of PRC2-mediated H3K27me3. Together, we demonstrate a functional link between epigenetic regulation and skin diseases.
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Affiliation(s)
- Idan Cohen
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
| | - Dejian Zhao
- Department of Genetics, Albert Einstein College of Medicine, Bronx, New York 10461, USA
| | - Gopinathan Menon
- California Academy of Sciences, San Francisco, California 94118, USA
| | - Manabu Nakayama
- Department of Frontier Research and Development, Kazusa DNA Research Institute, Kisarazu, Chiba 292-0818, Japan
| | - Haruhiko Koseki
- Laboratory for Developmental Genetics, RIKEN Center for Integrative Medical Sciences (RIKEN-IMS) Tsurumi-ku, Yokohama 230-0045, Japan.,Advanced Research and Development Programs for Medical Innovation (AMED-CREST), Tsurumi-ku, Yokohama 230-0045, Japan
| | - Deyou Zheng
- Department of Genetics, Albert Einstein College of Medicine, Bronx, New York 10461, USA.,Department of Neurology, Albert Einstein College of Medicine, Bronx, New York 10461, USA.,Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461, USA
| | - Elena Ezhkova
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, New York 10029, USA
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34
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Bellabah A, Benkirane A, Ibrahimi A, Nakhli A, Sair A, Nakhli A, Essaid A, Blel A, Ibrahimi A, Lahchaichi A, Ben Slama A, Ouni A, Amouri A, Jemaa A, Cherif A, Khsiba A, Hssine A, Djobbi A, Guedich A, Laabidi A, Mensi A, Ouakaa A, Sriha A, Choukri A, Green A, Belkhamsa A, Hammami A, Bourigua A, Filali A, Belabeh A, Ouakaa A, Sentissi A, Ait Errami A, Nadi A, Filankembo A, Lamine A, Badre W, Ben Kaab B, Ben Slimane B, S B, Hasnaoui B, Bouchabou B, Bouguerra C, Baccouche C, Ayadi C, Bennasrallah C, Benajah D, Gargouri D, Zehi D, Issaoui D, Cherif D, Ben Ghachem D, Trad D, Bouaiti E, Boutouria E, Bel Hadj Mabrouk E, Chalbi E, Aait E, Bouhamou F, Haddad F, Lairani F, Saffar F, Torjmen F, Haj Kacem F, Hamdane F, Chabib FZ, Elrhaoussi FZ, Moumayez FZ, Loukil F, Ahmed Djouldé Diallo F, Aissaoui F, Ajana F, Chabib F, Hamdoun F, Moumayez F, Hamdane F, Haddad F, Bennani Kella G, Bennani G, Abid H, Cheikhani H, Ouazzani H, Romdhane H, Seddik H, Sghir H, Debbabi H, Ben Jeddi H, Garraoui H, Letaief H, Kchir H, Elloumi H, Hammami H, Jaziri H, Ben Abdallah H, Chaabouni H, Ben Romdhane H, Yacoub H, Ben Jeddi H, Elloumi H, Gdoura H, Kchir H, Sahli H, Loghmari H, Bouguerra H, Maghrebi H, Ben Nejma H, Jlassi H, Elloumi H, Fourati H, Alaoui H, Ismail H, Benelbarhdadi I, Cohen I, Errabih I, Koti I, Doghri I, Cohen I, Elhidaoui I, Haraki I, Cheikh I, Abdelaali I, Jemni I, Bouennene I, Akoch I, H I, Boubaker J, Krati K, Eljery K, Temani K, Bellil K, Chabbouh K, Boughoula K, Ouazzani L, Ben Yaghlene L, Kallel L, A L, Hamzaoui L, Chtourou L, Ben Farhat L, Bouabid L, Mnif L, Mouelhi L, Safer L, Zouiten Mekki L, Bourehma M, El Akbari M, El Khayari M, Elyousfi M, Firwana M, Lahlali M, Tahiri M, Mestouri M, Abdelwahed M, Ben Hamida M, Ben Chaabane M, Moalla M, Yakoubi M, Sabbah M, Serghini M, Amri M, Ben Abbes M, Ben Cheikh M, Ghribi M, Hafi M, El Khayari M, Ben Abdelwahed M, Ksiaa M, Essid M, Zakhama M, Yousfi M, Sabbah M, Ayari M, Belhadj M, Cheickh M, Kacem M, Horma Alaoui M, Abid M, Bennour MA, Ghanem M, Loghmari MH, Douggui MH, Azouz MM, Abdelli MN, Boudabous M, Feki M, Fekih M, Kacem M, Mahmoudi M, Boudabbous M, Figuigui M, Medhioub M, Safer M, Azzouz M, Yakoubi M, Abbes M, Amri M, El Abkari M, Aqodad N, Azib N, Bellil N, Benhoumane N, Benzoubbeir N, Elkhabiz N, Hemdani N, Lahmidani N, Abdelli N, Ben Chaabane N, Tahri N, Azib N, Benhoummane N, Ben Jaafar N, Ben Mustapha N, Maamouri N, Elkhabiz N, Bellil N, Hannachi N, Hemdani N, Ben Alaya N, Bibani N, Trad N, Elleuch N, Lahmidani N, Kharmach O, Bahri O, Bousnina O, Gharbi O, Kharmach O, Benjira R, Ennaifer R, Dabbèche R, Jouini R, Zgolli R, Baklouti R, Bouali Mohamed R, Marouani R, Kallel R, Ennaifer R, Berrag S, El Yazal S, Jiddi S, Mechhour S, Morabit S, Oubaha S, Sentissi S, Bouaziz S, Soua S, Hachicha S, Elaboudi S, Ajmi S, Mallat S, Bouchoucha S, Mrabti S, Ben Slama S, Hamdi S, Laabidi S, Ayadi S, Hidri S, Bizid S, Ben Hamida S, Zertiti S, Ben Amor S, Nsibi S, Bellakhal S, Bahja S, Jomni T, Hliwa W, Rebai W, Ben Mansour W, Ben Othmen W, Dhouib W, Hammoumi W, Zaatour W, Bouhlel W, Feki W, Triki W, Said Y, Zaimi Y, Gorgi Y, Bouhnoun Z, Samlani Z, Hamidi Z, Mnif Z, Ben Safta Z. Oral communication and poster abstracts of the 22nd National Congress of Gastroenterology joint to the 4th Maghrebian Congress of Gastroenterology. December 2018. Tunis Med 2018; 96:932-1007. [PMID: 31131873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
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Litmanovich A, Khazim K, Cohen I. The Role of Interleukin-1 in the Pathogenesis of Cancer and its Potential as a Therapeutic Target in Clinical Practice. Oncol Ther 2018; 6:109-127. [PMID: 32700032 PMCID: PMC7359982 DOI: 10.1007/s40487-018-0089-z] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Indexed: 02/07/2023] Open
Abstract
Interleukin-1 (IL-1) has long been known to be a key mediator of immunity and inflammation. Its dysregulation has been implicated in recent years in tumorigenesis and tumor progression, and its upregulation is thought to be associated with many tumors. Overexpression of the IL-1 agonists IL-1α and IL-1β has been shown to promote tumor invasiveness and metastasis by inducing the expression of angiogenic genes and growth factors. IL-1 blockers such as anakinra and canakinumab are already approved and widely used for the treatment of some autoimmune and autoinflammatory diseases and are currently being tested in preclinical and human clinical trials for cancer therapy. In this paper we review the most recent discoveries regarding the association between IL-1 dysregulation and cancer and present the novel IL-1 blockers currently being tested in cancer therapy and their corresponding clinical trials.
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Affiliation(s)
- Adi Litmanovich
- The Azrieli Faculty of Medicine, Bar Ilan University, Safed, Israel
- Research Institute, Galilee Medical Center, Nahariya, Israel
| | - Khaled Khazim
- The Azrieli Faculty of Medicine, Bar Ilan University, Safed, Israel
- Research Institute, Galilee Medical Center, Nahariya, Israel
- Department of Nephrology and Hypertension, Galilee Medical Center, Nahariya, Israel
| | - Idan Cohen
- The Azrieli Faculty of Medicine, Bar Ilan University, Safed, Israel.
- Research Institute, Galilee Medical Center, Nahariya, Israel.
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36
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Nguyen MB, Cohen I, Kumar V, Xu Z, Bar C, Dauber-Decker KL, Tsai PC, Marangoni P, Klein OD, Hsu YC, Chen T, Mikkola ML, Ezhkova E. Publisher Correction: FGF signalling controls the specification of hair placode-derived SOX9 positive progenitors to Merkel cells. Nat Commun 2018; 9:2854. [PMID: 30018293 PMCID: PMC6050296 DOI: 10.1038/s41467-018-05361-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Minh Binh Nguyen
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY, 10029, USA
| | - Idan Cohen
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY, 10029, USA
| | - Vinod Kumar
- Developmental Biology Program, Institute of Biotechnology, University of Helsinki, 00014, Helsinki, Finland
| | - Zijian Xu
- National Institute of Biological Sciences, 102206, Beijing, China
| | - Carmit Bar
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY, 10029, USA
| | - Katherine L Dauber-Decker
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY, 10029, USA
| | - Pai-Chi Tsai
- Department of Stem Cell and Regenerative Biology, Harvard Stem Cell Institute, Harvard University, Cambridge, MA, 02138, USA
| | - Pauline Marangoni
- Department of Orofacial Sciences and Program in Craniofacial Biology, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Ophir D Klein
- Department of Orofacial Sciences and Program in Craniofacial Biology, University of California San Francisco, San Francisco, CA, 94143, USA.,Department of Pediatrics and Institute for Human Genetics, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Ya-Chieh Hsu
- Department of Stem Cell and Regenerative Biology, Harvard Stem Cell Institute, Harvard University, Cambridge, MA, 02138, USA
| | - Ting Chen
- National Institute of Biological Sciences, 102206, Beijing, China
| | - Marja L Mikkola
- Developmental Biology Program, Institute of Biotechnology, University of Helsinki, 00014, Helsinki, Finland
| | - Elena Ezhkova
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY, 10029, USA.
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Cohen I, Kaminsky E, Joshua H, Klibansky C, Kohn A, De Vries A. Action of Newcastle Disease Virus on Human Blood Platelets. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1655601] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryNewcastle Disease Virus induces a viscous metamorphosis like process in washed platelets.This virus liberates from platelets lactic dehydrogenase and pyruvate kinase, depletes their ATP content and impairs their ability to concentrate 5-hydroxy-tryptamine.Since Newcastle Disease Virus has adenosine triphosphatase activity, a possible role of this viral enzyme in the production of viscous metamorphosis and in inhibition of clot retraction is discussed.Treatment of platelets by Newcastle Disease Virus or by particulate fraction from normal allantoic fluid causes liberation of a platelet factor 3-like substance.
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38
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Cohen I, Zhao D, Bar C, Valdes VJ, Dauber-Decker KL, Nguyen MB, Nakayama M, Rendl M, Bickmore WA, Koseki H, Zheng D, Ezhkova E. PRC1 Fine-tunes Gene Repression and Activation to Safeguard Skin Development and Stem Cell Specification. Cell Stem Cell 2018; 22:726-739.e7. [PMID: 29727681 PMCID: PMC5944606 DOI: 10.1016/j.stem.2018.04.005] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 03/07/2018] [Accepted: 04/09/2018] [Indexed: 12/22/2022]
Abstract
Polycomb repressive complexes (PRCs) 1 and 2 are essential chromatin regulators of cell identity. PRC1, a dominant executer of Polycomb-mediated control, functions as multiple sub-complexes that possess catalytic-dependent H2AK119 mono-ubiquitination (H2AK119ub) and catalytic-independent activities. Here, we show that, despite its well-established repressor functions, PRC1 binds to both silent and active genes. Through in vivo loss-of-function studies, we show that global PRC1 function is essential for skin development and stem cell (SC) specification, whereas PRC1 catalytic activity is dispensable. Further dissection demonstrated that both canonical and non-canonical PRC1 complexes bind to repressed genes, marked by H2AK119ub and PRC2-mediated H3K27me3. Interestingly, loss of canonical PRC1, PRC1 catalytic activity, or PRC2 leads to expansion of mechanosensitive Merkel cells in neonatal skin. Non-canonical PRC1 complexes, however, also bind to and promote expression of genes critical for skin development and SC formation. Together, our findings highlight PRC1's diverse roles in executing a precise developmental program.
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Affiliation(s)
- Idan Cohen
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Dejian Zhao
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Carmit Bar
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Victor J Valdes
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Katherine L Dauber-Decker
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Minh Binh Nguyen
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Manabu Nakayama
- Department of Technology Development, Kazusa DNA Research Institute, 2-6-7 Kazusa-Kamatari, Kisarazu, Chiba 292-0818, Japan
| | - Michael Rendl
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA; Department of Dermatology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Wendy A Bickmore
- MRC Human Genetics Unit, MRC Institute of Genetics and Molecular Medicine at University of Edinburgh, Crewe Road, Edinburgh EH4 2XU, UK
| | - Haruhiko Koseki
- Laboratory for Developmental Genetics, RIKEN Center for Integrative Medical Sciences (IMS) and CREST, Japan Science and Technology Agency, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
| | - Deyou Zheng
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA; Departments of Neurology and Neuroscience, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Elena Ezhkova
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA.
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Fenker B, Gorelov A, Melconian D, Behr JA, Anholm M, Ashery D, Behling RS, Cohen I, Craiciu I, Gwinner G, McNeil J, Mehlman M, Olchanski K, Shidling PD, Smale S, Warner CL. Precision Measurement of the β Asymmetry in Spin-Polarized ^{37}K Decay. Phys Rev Lett 2018; 120:062502. [PMID: 29481259 DOI: 10.1103/physrevlett.120.062502] [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] [Received: 06/01/2017] [Revised: 12/23/2017] [Indexed: 06/08/2023]
Abstract
Using Triumf's neutral atom trap, Trinat, for nuclear β decay, we have measured the β asymmetry with respect to the initial nuclear spin in ^{37}K to be A_{β}=-0.5707(13)_{syst}(13)_{stat}(5)_{pol}, a 0.3% measurement. This is the best relative accuracy of any β-asymmetry measurement in a nucleus or the neutron, and is in agreement with the standard model prediction -0.5706(7). We compare constraints on physics beyond the standard model with other β-decay measurements, and improve the value of V_{ud} measured in this mirror nucleus by a factor of 4.
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Affiliation(s)
- B Fenker
- Cyclotron Institute, Texas A&M University, 3366 TAMU, College Station, Texas 77843-3366, USA
- Department of Physics and Astronomy, Texas A&M University, 4242 TAMU, College Station, Texas 77843-4242, USA
| | - A Gorelov
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - D Melconian
- Cyclotron Institute, Texas A&M University, 3366 TAMU, College Station, Texas 77843-3366, USA
- Department of Physics and Astronomy, Texas A&M University, 4242 TAMU, College Station, Texas 77843-4242, USA
| | - J A Behr
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - M Anholm
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - D Ashery
- School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel
| | - R S Behling
- Cyclotron Institute, Texas A&M University, 3366 TAMU, College Station, Texas 77843-3366, USA
- Department of Chemistry, Texas A&M University, 3012 TAMU, College Station, Texas 77843-3012, USA
| | - I Cohen
- School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel
| | - I Craiciu
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - G Gwinner
- Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - J McNeil
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - M Mehlman
- Cyclotron Institute, Texas A&M University, 3366 TAMU, College Station, Texas 77843-3366, USA
- Department of Physics and Astronomy, Texas A&M University, 4242 TAMU, College Station, Texas 77843-4242, USA
| | - K Olchanski
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - P D Shidling
- Cyclotron Institute, Texas A&M University, 3366 TAMU, College Station, Texas 77843-3366, USA
| | - S Smale
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - C L Warner
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
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Affiliation(s)
- Khaled Khazim
- Faculty of Medicine in the Galilee; Bar Ilan University; Safed Israel
- Department of Nephrology and Hypertension; Galilee Medical Center; Nahariya Israel
| | - Etti Ester Azulay
- Faculty of Medicine in the Galilee; Bar Ilan University; Safed Israel
- Research Institute; Galilee Medical Center; Nahariya Israel
| | - Batya Kristal
- Faculty of Medicine in the Galilee; Bar Ilan University; Safed Israel
- Department of Nephrology and Hypertension; Galilee Medical Center; Nahariya Israel
| | - Idan Cohen
- Faculty of Medicine in the Galilee; Bar Ilan University; Safed Israel
- Research Institute; Galilee Medical Center; Nahariya Israel
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41
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Cohen I, Staretz-Chacham O, Wormser O, Perez Y, Saada A, Kadir R, Birk OS. A novel homozygous SLC25A1 mutation with impaired mitochondrial complex V: Possible phenotypic expansion. Am J Med Genet A 2017; 176:330-336. [PMID: 29226520 DOI: 10.1002/ajmg.a.38574] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 01/31/2017] [Revised: 11/13/2017] [Accepted: 11/16/2017] [Indexed: 11/08/2022]
Abstract
SLC25A1 mutations are associated with combined D,L-2-hydroxyglutaric aciduria (DL- 2HGA; OMIM #615182), characterized by muscular hypotonia, severe neurodevelopmental dysfunction and intractable seizures. SLC25A1 encodes the mitochondrial citrate carrier (CIC), which mediates efflux of the mitochondrial tricarboxylic acid (TCA) cycle intermediates citrate and isocitrate in exchange for cytosolic malate. Only a single family with an SLC25A1 mutation has been described in which mitochondrial respiratory chain dysfunction was documented, specifically in complex IV. Five infants of two consanguineous Bedouin families of the same tribe presented with small head circumference and neonatal-onset encephalopathy with severe muscular weakness, intractable seizures, respiratory distress, and lack of psychomotor development culminating in early death. Ventricular septal defects (VSD) were demonstrated in three patients. Blood and CSF lactate were elevated with normal levels of plasma amino acids and free carnitine and increased 2-OH-glutaric acid urinary exertion. EEG was compatible with white matter disorder. Brain MRI revealed ventriculomegaly, thin corpus callosum with increased lactate peak on spectroscopy. Mitochondrial complex V deficiency was demonstrated in skeletal muscle biopsy of one infant. Homozygosity mapping and sequencing ruled out homozygosity of affected individuals in all known complex V-associated genes. Whole exome sequencing identified a novel homozygous SLC25A1 c.713A>G (p.Asn238Ser) mutation, segregating as expected in the affected kindred and not found in 220 control alleles. Thus, SLC25A1 mutations might be associated with mitochondrial complex V deficiency and should be considered in the differential diagnosis of mitochondrial respiratory chain defects.
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Affiliation(s)
- Idan Cohen
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University of the Negev, Beer-Sheva, Israel
| | - Orna Staretz-Chacham
- Metabolic unit, Division of Pediatrics, Soroka Medical Center, Ben Gurion University, Beer Sheva, Israel
| | - Ohad Wormser
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University of the Negev, Beer-Sheva, Israel
| | - Yonatan Perez
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University of the Negev, Beer-Sheva, Israel
| | - Ann Saada
- Monique and Jacques Roboh Department of Genetic Research and The Department of Genetic Metabolic Diseases, Hadassah, Hebrew University Medical Center, Jerusalem, Israel
| | - Rotem Kadir
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University of the Negev, Beer-Sheva, Israel
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University of the Negev, Beer-Sheva, Israel.,Genetics Institute, Soroka Medical Center, Beer-Sheva, Israel
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42
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Goldman O, Cohen I, Gouon-Evans V. Functional Blood Progenitor Markers in Developing Human Liver Progenitors. Stem Cell Reports 2017; 7:158-66. [PMID: 27509132 PMCID: PMC4983080 DOI: 10.1016/j.stemcr.2016.07.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 05/19/2015] [Revised: 07/08/2016] [Accepted: 07/10/2016] [Indexed: 11/30/2022] Open
Abstract
In the early fetal liver, hematopoietic progenitors expand and mature together with hepatoblasts, the liver progenitors of hepatocytes and cholangiocytes. Previous analyses of human fetal livers indicated that both progenitors support each other's lineage maturation and curiously share some cell surface markers including CD34 and CD133. Using the human embryonic stem cell (hESC) system, we demonstrate that virtually all hESC-derived hepatoblast-like cells (Hep cells) transition through a progenitor stage expressing CD34 and CD133 as well as GATA2, an additional hematopoietic marker that has not previously been associated with human hepatoblast development. Dynamic expression patterns for CD34, CD133, and GATA2 in hepatoblasts were validated in human fetal livers collected from the first and second trimesters of gestation. Knockdown experiments demonstrate that each gene also functions to regulate hepatic fate mostly in a cell-autonomous fashion, revealing unprecedented roles of fetal hematopoietic progenitor markers in human liver progenitors. Co-expression of hematopoietic markers CD34, CD133, and GATA2 in hESC-Hep cells Function of CD34, CD133, and GATA2 in hepatic specification of hESC-Hep cells Co-expression of CD34, CD133, and GATA2 in hepatoblasts from human fetal livers
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Affiliation(s)
- Orit Goldman
- Department of Developmental and Regenerative Biology, Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Idan Cohen
- Department of Developmental and Regenerative Biology, Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Valerie Gouon-Evans
- Department of Developmental and Regenerative Biology, Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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43
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Pikul JH, Li S, Bai H, Hanlon RT, Cohen I, Shepherd RF. Stretchable surfaces with programmable 3D texture morphing for synthetic camouflaging skins. Science 2017; 358:210-214. [DOI: 10.1126/science.aan5627] [Citation(s) in RCA: 156] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 08/15/2017] [Indexed: 01/18/2023]
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Rider P, Voronov E, Dinarello CA, Apte RN, Cohen I. Alarmins: Feel the Stress. J Immunol 2017; 198:1395-1402. [PMID: 28167650 DOI: 10.4049/jimmunol.1601342] [Citation(s) in RCA: 123] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 09/27/2016] [Indexed: 12/20/2022]
Abstract
Over the last decade, danger-associated molecular pattern molecules, or alarmins, have been recognized as signaling mediators of sterile inflammatory responses after trauma and injury. In contrast with the accepted passive release models suggested by the "danger hypothesis," it was recently shown that alarmins can also directly sense and report damage by signaling to the environment when released from live cells undergoing physiological stress, even without loss of subcellular compartmentalization. In this article, we review the involvement of alarmins such as IL-1α, IL-33, IL-16, and high-mobility group box 1 in cellular and physiological stress, and suggest a novel activity of these molecules as central initiators of sterile inflammation in response to nonlethal stress, a function we denote "stressorins." We highlight the role of posttranslational modifications of stressorins as key regulators of their activity and propose that targeted inhibition of stressorins or their modifiers could serve as attractive new anti-inflammatory treatments for a broad range of diseases.
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Affiliation(s)
- Peleg Rider
- Department of Clinical Biochemistry and Pharmacology, Ben Gurion University of the Negev, 84105 Beer-Sheva, Israel
| | - Elena Voronov
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Ben Gurion University of the Negev, 84105 Beer-Sheva, Israel
| | | | - Ron N Apte
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Ben Gurion University of the Negev, 84105 Beer-Sheva, Israel
| | - Idan Cohen
- Faculty of Medicine, Galilee Medical Center, Nahariya Hospital, 22100 Nahariya, Israel
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Abraham W, Sabater J, McClain D, Ball R, Beerman M, Baden D, Bourdelais A, Salathe M, Milla C, Cohen I. EPS1.8 The anti-inflammatory activity of the mucociliary clearance agent brevenal enhances the efficacy of cystic fibrosis therapies. J Cyst Fibros 2017. [DOI: 10.1016/s1569-1993(17)30281-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Weidt S, Randall J, Webster SC, Lake K, Webb AE, Cohen I, Navickas T, Lekitsch B, Retzker A, Hensinger WK. Trapped-Ion Quantum Logic with Global Radiation Fields. Phys Rev Lett 2016; 117:220501. [PMID: 27925715 DOI: 10.1103/physrevlett.117.220501] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Indexed: 06/06/2023]
Abstract
Trapped ions are a promising tool for building a large-scale quantum computer. However, the number of required radiation fields for the realization of quantum gates in any proposed ion-based architecture scales with the number of ions within the quantum computer, posing a major obstacle when imagining a device with millions of ions. Here, we present a fundamentally different approach for trapped-ion quantum computing where this detrimental scaling vanishes. The method is based on individually controlled voltages applied to each logic gate location to facilitate the actual gate operation analogous to a traditional transistor architecture within a classical computer processor. To demonstrate the key principle of this approach we implement a versatile quantum gate method based on long-wavelength radiation and use this method to generate a maximally entangled state of two quantum engineered clock qubits with fidelity 0.985(12). This quantum gate also constitutes a simple-to-implement tool for quantum metrology, sensing, and simulation.
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Affiliation(s)
- S Weidt
- Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom
| | - J Randall
- Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom
- QOLS, Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom
| | - S C Webster
- Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom
| | - K Lake
- Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom
| | - A E Webb
- Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom
| | - I Cohen
- Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Givat Ram, Israel
| | - T Navickas
- Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom
| | - B Lekitsch
- Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom
| | - A Retzker
- Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Givat Ram, Israel
| | - W K Hensinger
- Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom
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Clark G, Cohen I, Westlake JH, Andrews GB, Brandt P, Gold RE, Gkioulidou MA, Hacala R, Haggerty D, Hill ME, Ho GC, Jaskulek SE, Kollmann P, Mauk BH, McNutt RL, Mitchell DG, Nelson KS, Paranicas C, Paschalidis N, Schlemm CE. The "Puck" energetic charged particle detector: Design, heritage, and advancements. J Geophys Res Space Phys 2016; 121:7900-7913. [PMID: 27867799 PMCID: PMC5101846 DOI: 10.1002/2016ja022579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 02/21/2016] [Revised: 06/10/2016] [Accepted: 07/27/2016] [Indexed: 06/06/2023]
Abstract
Energetic charged particle detectors characterize a portion of the plasma distribution function that plays critical roles in some physical processes, from carrying the currents in planetary ring currents to weathering the surfaces of planetary objects. For several low-resource missions in the past, the need was recognized for a low-resource but highly capable, mass-species-discriminating energetic particle sensor that could also obtain angular distributions without motors or mechanical articulation. This need led to the development of a compact Energetic Particle Detector (EPD), known as the "Puck" EPD (short for hockey puck), that is capable of determining the flux, angular distribution, and composition of incident ions between an energy range of ~10 keV to several MeV. This sensor makes simultaneous angular measurements of electron fluxes from the tens of keV to about 1 MeV. The same measurements can be extended down to approximately 1 keV/nucleon, with some composition ambiguity. These sensors have a proven flight heritage record that includes missions such as MErcury Surface, Space ENvironment, GEochemistry, and Ranging and New Horizons, with multiple sensors on each of Juno, Van Allen Probes, and Magnetospheric Multiscale. In this review paper we discuss the Puck EPD design, its heritage, unexpected results from these past missions and future advancements. We also discuss high-voltage anomalies that are thought to be associated with the use of curved foils, which is a new foil manufacturing processes utilized on recent Puck EPD designs. Finally, we discuss the important role Puck EPDs can potentially play in upcoming missions.
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Affiliation(s)
- G. Clark
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - I. Cohen
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - J. H. Westlake
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - G. B. Andrews
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - P. Brandt
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - R. E. Gold
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - M. A. Gkioulidou
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - R. Hacala
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - D. Haggerty
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - M. E. Hill
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - G. C. Ho
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - S. E. Jaskulek
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - P. Kollmann
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - B. H. Mauk
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - R. L. McNutt
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - D. G. Mitchell
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - K. S. Nelson
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | - C. Paranicas
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
| | | | - C. E. Schlemm
- The Johns Hopkins University Applied Physics LaboratoryLaurelMarylandUSA
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Dauber K, Perdigoto C, Valdes V, Santoriello F, Cohen I, Ezhkova E. 674 Dissecting the roles of Polycomb repressive complex 2 in the control of skin development. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.716] [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: 11/30/2022]
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Kadir R, Harel T, Markus B, Perez Y, Bakhrat A, Cohen I, Volodarsky M, Feintsein-Linial M, Chervinski E, Zlotogora J, Sivan S, Birnbaum RY, Abdu U, Shalev S, Birk OS. ALFY-Controlled DVL3 Autophagy Regulates Wnt Signaling, Determining Human Brain Size. PLoS Genet 2016; 12:e1005919. [PMID: 27008544 PMCID: PMC4805177 DOI: 10.1371/journal.pgen.1005919] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 02/15/2016] [Indexed: 12/15/2022] Open
Abstract
Primary microcephaly is a congenital neurodevelopmental disorder of reduced head circumference and brain volume, with fewer neurons in the cortex of the developing brain due to premature transition between symmetrical and asymmetrical cellular division of the neuronal stem cell layer during neurogenesis. We now show through linkage analysis and whole exome sequencing, that a dominant mutation in ALFY, encoding an autophagy scaffold protein, causes human primary microcephaly. We demonstrate the dominant effect of the mutation in drosophila: transgenic flies harboring the human mutant allele display small brain volume, recapitulating the disease phenotype. Moreover, eye-specific expression of human mutant ALFY causes rough eye phenotype. In molecular terms, we demonstrate that normally ALFY attenuates the canonical Wnt signaling pathway via autophagy-dependent removal specifically of aggregates of DVL3 and not of Dvl1 or Dvl2. Thus, autophagic attenuation of Wnt signaling through removal of Dvl3 aggregates by ALFY acts in determining human brain size. One of the major events in human evolution is the significant increase in brain volume in the transition from primates to humans. The molecular pathways determining the larger size of the human brain are not fully understood. Hereditary primary microcephaly, a neurodevelopmental disorder in which infants are born with small head circumference and reduced brain volume with intellectual disability, offers insights to the embryonic molecular pathways determining human brain size. Previous studies have shown that human microcephaly can be caused by mutations in genes affecting cell division processes, such as cell cycle regulation, DNA replication, primary cilia formation and centriole and centrosome duplication. We now show a novel molecular pathway determining human brain size: human primary microcephaly can be caused by a mutation in ALFY, a gene that encodes an autophagy scaffold protein. In fact, transgenic flies over expressing the mutant form of human ALFY recapitulate the human disease phenotype of microcephaly. We show the molecular pathway through which ALFY regulates cell division and differentiation: we demonstrate that ALFY normally controls removal of aggregate of DVL3, and through this regulates Wnt signaling, a major molecular pathway in embryogenesis. Thus, Wnt signaling, controlled by ALFY-mediated aggregate removal of DVL3, determines human brain size and human microcephaly.
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Affiliation(s)
- Rotem Kadir
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University, Beer Sheva, Israel
| | - Tamar Harel
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University, Beer Sheva, Israel
| | - Barak Markus
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University, Beer Sheva, Israel
| | - Yonatan Perez
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University, Beer Sheva, Israel
| | - Anna Bakhrat
- Department of Life Sciences, Ben Gurion University, Beer Sheva, Israel
| | - Idan Cohen
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University, Beer Sheva, Israel
| | - Michael Volodarsky
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University, Beer Sheva, Israel
| | - Miora Feintsein-Linial
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University, Beer Sheva, Israel
| | | | - Joel Zlotogora
- Department of Community Genetics, Public Health Services, Ministry of Health, Jerusalem, Israel
| | - Sara Sivan
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University, Beer Sheva, Israel
| | - Ramon Y Birnbaum
- Department of Life Sciences, Ben Gurion University, Beer Sheva, Israel
| | - Uri Abdu
- Department of Life Sciences, Ben Gurion University, Beer Sheva, Israel
| | - Stavit Shalev
- Genetics Institute, HaEmek Medical Center, Afula, Israel
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben Gurion University, Beer Sheva, Israel.,Genetics Institute, Soroka University Medical Center, Ben Gurion University, Beer Sheva, Israel
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Dauber KL, Perdigoto CN, Valdes VJ, Santoriello FJ, Cohen I, Ezhkova E. Dissecting the Roles of Polycomb Repressive Complex 2 Subunits in the Control of Skin Development. J Invest Dermatol 2016; 136:1647-1655. [PMID: 26994968 DOI: 10.1016/j.jid.2016.02.809] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 02/23/2016] [Accepted: 02/29/2016] [Indexed: 12/28/2022]
Abstract
Polycomb repressive complex 2 (PRC2) is an essential regulator of cell physiology. Although there have been numerous studies on PRC2 function in somatic tissue development and stem cell control, these have focused on the loss of a single PRC2 subunit. Recent studies, however, have shown that PRC2 subunits may function independently of the PRC2 complex. To investigate the function of PRC2 in the control of skin development, we generated and analyzed three conditional knockout mouse lines, in which the essential PRC2 subunits embryonic ectoderm development (EED), suppressor of zeste 12 homolog (Suz12), and enhancer of zeste homologs 1 and 2 (Ezh1/2) are conditionally ablated in the embryonic epidermal progenitors that give rise to the epidermis, hair follicles, and Merkel cells. Our studies showed that the observed loss-of-function phenotypes are shared between the three knockouts, indicating that in the skin epithelium, EED, Suz12, and Ezh1/2 function largely as subunits of the PRC2 complex. Interestingly, the absence of PRC2 results in dramatically different phenotypes across the different skin lineages: premature acquisition of a functional epidermal barrier, formation of ectopic Merkel cells, and defective postnatal development of hair follicles. The strikingly different roles of PRC2 in the formation of three lineages exemplify the complex outcomes that the lack of PRC2 can have in a somatic stem cell system.
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Affiliation(s)
- Katherine L Dauber
- Black Family Stem Cell Institute, Department of Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Carolina N Perdigoto
- Black Family Stem Cell Institute, Department of Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Victor J Valdes
- Black Family Stem Cell Institute, Department of Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Francis J Santoriello
- Black Family Stem Cell Institute, Department of Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Idan Cohen
- Black Family Stem Cell Institute, Department of Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Elena Ezhkova
- Black Family Stem Cell Institute, Department of Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
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