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Jiekun Yang, Xiaolong Wei, Turan Tufan, Cem Kuscu, Hayrunnisa Unlu, Saadia Farooq, Elif Demirtas, Bryce M Paschal, Mazhar Adli
BACKGROUND: The mutational processes underlying non-coding cancer mutations and their biological significance in tumor evolution are poorly understood. To get better insights into the biological mechanisms of mutational processes in breast cancer, we integrate whole-genome level somatic mutations from breast cancer patients with chromatin states and transcription factor binding events. RESULTS: We discover that a large fraction of non-coding somatic mutations in estrogen receptor (ER)-positive breast cancers are confined to ER binding sites...
November 7, 2018: Genome Biology
Shouya Feng, Daniel Fox, Si Ming Man
The Gasdermin (GSDM) family consists of Gasdermin A (GSDMA), Gasdermin B (GSDMB), Gasdermin C (GSDMC), Gasdermin D (GSDMD), Gasdermin E (GSDME) and Pejvakin (PJVK). GSDMD is activated by inflammasome-associated inflammatory caspases. Cleavage of GSDMD by human or mouse caspase-1, human caspase-4, human caspase-5, and mouse caspase-11 liberates the N-terminal effector domain from the C-terminal inhibitory domain. The N-terminal domain oligomerizes in the cell membrane and forms a pore of 10-16 nm in diameter, through which substrates of a smaller diameter, such as interleukin-1β and interleukin-18, are secreted...
September 14, 2018: Journal of Molecular Biology
Aida Moreno-Moral, Marta Bagnati, Surya Koturan, Jeong-Hun Ko, Carmen Fonseca, Nathan Harmston, Laurence Game, Javier Martin, Voon Ong, David J Abraham, Christopher P Denton, Jacques Behmoaras, Enrico Petretto
OBJECTIVES: Several common and rare risk variants have been reported for systemic sclerosis (SSc), but the effector cell(s) mediating the function of these genetic variants remains to be elucidated. While innate immune cells have been proposed as the critical targets to interfere with the disease process underlying SSc, no studies have comprehensively established their effector role. Here we investigated the contribution of monocyte-derived macrophages (MDMs) in mediating genetic susceptibility to SSc...
April 2018: Annals of the Rheumatic Diseases
Julia Lachner, Veronika Mlitz, Erwin Tschachler, Leopold Eckhart
The homeostasis of the epidermis depends on keratinocyte differentiation and cornification, a mode of programmed cell death that does not elicit inflammation. Here, we report that cornification is associated with the expression of specific genes that control multiple steps of pyroptosis, another form of cell death that involves the processing and release of interleukin-1 family (IL1F) cytokines. Expression levels of pro-inflammatory IL1A and IL1B and of the pyroptotic pore-forming gasdermin (GSDM) D were downregulated during terminal differentiation of human keratinocytes in vitro...
December 12, 2017: Scientific Reports
S J Glisovic, Y D Pastore, V Gagne, M Plesa, C Laverdière, J M Leclerc, D Sinnett, M Krajinovic
Neutropenia and infection are major dose-limiting side effects of chemotherapy. The risk of initial infection and subsequent complications are directly related to the depth and duration of neutropenia. Recent genome-wide association studies identified variants in DARC and CXCL2 genes, and in ORMDL3-GSDMA-CSF3 locus on chromosome 17q21 that influence white blood cell and neutrophil counts in healthy individuals. To investigate whether polymorphisms in these loci in conjunction with chemotherapy may modulate risk of treatment complications, we analyzed 21 SNPs across these genes for an association with chemotherapy-related neutropenia and infection in 286 Caucasian children with acute lymphoblastic leukemia...
April 2018: Pharmacogenomics Journal
Shiqiao Qiu, Jing Liu, Feiyue Xing
Pyroptosis is a lytic form of cell death distinguished from apoptosis, ferroptosis, necrosis, necroptosis, NETosis, oncosis, pyronecrosis and autophagy. Proinflammatory caspases cleave a gasdermin D (GSDMD) protein to generate a 31 kDa N-terminal domain. The cleavage relieves the intramolecular inhibition on the gasdermin-N domain, which then moves to the plasma membrane to exhibit pore-forming activity. Thus, GSDMD acts as the final and direct executor of pyroptotic cell death. Owing to the selective targeting of the inner leaflet of the plasma membrane with the pore-forming that determines pyroptotic cell death, GSDMD could be a potential target to control cell death or extracellular bacterial infections...
April 2017: Cell Death and Differentiation
Chikashi Terao, Takahisa Kawaguchi, Philippe Dieude, John Varga, Masataka Kuwana, Marie Hudson, Yasushi Kawaguchi, Marco Matucci-Cerinic, Koichiro Ohmura, Gabriela Riemekasten, Aya Kawasaki, Paolo Airo, Tetsuya Horita, Akira Oka, Eric Hachulla, Hajime Yoshifuji, Paola Caramaschi, Nicolas Hunzelmann, Murray Baron, Tatsuya Atsumi, Paul Hassoun, Takeshi Torii, Meiko Takahashi, Yasuharu Tabara, Masakazu Shimizu, Akiko Tochimoto, Naho Ayuzawa, Hidetoshi Yanagida, Hiroshi Furukawa, Shigeto Tohma, Minoru Hasegawa, Manabu Fujimoto, Osamu Ishikawa, Toshiyuki Yamamoto, Daisuke Goto, Yoshihide Asano, Masatoshi Jinnin, Hirahito Endo, Hiroki Takahashi, Kazuhiko Takehara, Shinichi Sato, Hironobu Ihn, Soumya Raychaudhuri, Katherine Liao, Peter Gregersen, Naoyuki Tsuchiya, Valeria Riccieri, Inga Melchers, Gabriele Valentini, Anne Cauvet, Maria Martinez, Tsuneyo Mimori, Fumihiko Matsuda, Yannick Allanore
OBJECTIVES: Systemic sclerosis (SSc) is an autoimmune disease characterised by skin and systemic fibrosis culminating in organ damage. Previous genetic studies including genome-wide association studies (GWAS) have identified 12 susceptibility loci satisfying genome-wide significance. Transethnic meta-analyses have successfully expanded the list of susceptibility genes and deepened biological insights for other autoimmune diseases. METHODS: We performed transethnic meta-analysis of GWAS in the Japanese and European populations, followed by a two-staged replication study comprising a total of 4436 cases and 14 751 controls...
June 2017: Annals of the Rheumatic Diseases
Sanny Moussette, Abeer Al Tuwaijri, Hamid-Reza Kohan-Ghadr, Samar Elzein, Raquel Farias, Julie Bérubé, Bianca Ho, Catherine Laprise, Cynthia G Goodyer, Simon Rousseau, Anna K Naumova
Chromosomal region 17q12-q21 is associated with asthma and harbors regulatory polymorphisms that influence expression levels of all five protein-coding genes in the region: IKAROS family zinc finger 3 (Aiolos) (IKZF3), zona pellucida binding protein 2 (ZPBP2), ORMDL sphingolipid biosynthesis regulator 3 (ORMDL3), and gasdermins A and B (GSDMA, GSDMB). Furthermore, DNA methylation in this region has been implicated as a potential modifier of the genetic risk of asthma development. To further characterize the effect of DNA methylation, we examined the impact of treatment with DNA methyltransferase inhibitor 5-aza-2'-deoxycytidine (5-aza-dC) that causes DNA demethylation, on expression and promoter methylation of the five 17q12-q21 genes in the human airway epithelium cell line NuLi-1, embryonic kidney epithelium cell line 293T and human adenocarcinoma cell line MCF-7...
2017: PloS One
Jingjin Ding, Kun Wang, Wang Liu, Yang She, Qi Sun, Jianjin Shi, Hanzi Sun, Da-Cheng Wang, Feng Shao
Inflammatory caspases cleave the gasdermin D (GSDMD) protein to trigger pyroptosis, a lytic form of cell death that is crucial for immune defences and diseases. GSDMD contains a functionally important gasdermin-N domain that is shared in the gasdermin family. The functional mechanism of action of gasdermin proteins is unknown. Here we show that the gasdermin-N domains of the gasdermin proteins GSDMD, GSDMA3 and GSDMA can bind membrane lipids, phosphoinositides and cardiolipin, and exhibit membrane-disrupting cytotoxicity in mammalian cells and artificially transformed bacteria...
July 7, 2016: Nature
Mateja Žavbi, Peter Korošec, Matjaž Fležar, Sabina Škrgat Kristan, Mateja Marc Malovrh, Matija Rijavec
One of the major asthma susceptibility loci is 17q12-17q21.1, but the relationship between this locus and adult asthma is unclear. Association analysis of 13 single nucleotide polymorphisms (SNPs) and haplotypes from 17q12-17q21.1 was performed in 418 adult patients with asthma and 288 controls from Slovenia. Single SNP analysis revealed only marginal associations with adult asthma for SNPs located in GSDMA, GSDMB, ORMDL3 and ZPBP2 genes, and rs7219080 was the most highly associated. Analyses of asthma phenotypes found no association with atopy or lung function, but rs2305480 and rs8066582 were associated with childhood asthma and rs9916279 was associated with asthma in smokers...
June 2016: Human Immunology
Chloé Sarnowski, Pierre-Emmanuel Sugier, Raquel Granell, Debbie Jarvis, Marie-Hélène Dizier, Markus Ege, Medea Imboden, Catherine Laprise, Elza K Khusnutdinova, Maxim B Freidin, William O C Cookson, Miriam Moffatt, Mark Lathrop, Valérie Siroux, Ludmila M Ogorodova, Alexandra S Karunas, Alan James, Nicole M Probst-Hensch, Erika von Mutius, Isabelle Pin, Manolis Kogevinas, A John Henderson, Florence Demenais, Emmanuelle Bouzigon
BACKGROUND: Asthma is a heterogeneous disease in which age of onset plays an important role. OBJECTIVE: We sought to identify the genetic variants associated with time to asthma onset (TAO). METHODS: We conducted a large-scale meta-analysis of 9 genome-wide association studies of TAO (total of 5462 asthmatic patients with a broad range of age of asthma onset and 8424 control subjects of European ancestry) performed by using survival analysis techniques...
October 2016: Journal of Allergy and Clinical Immunology
Malek Zihlif, Nathir M Obeidat, Nadwa Zihlif, Tareq Mahafza, Tawfiq Froukh, Marcel T Ghanim, Hamza Beano, Fatima M Al-Akhras, Randa Naffa
INTRODUCTION: Gasdermin A (GSDMA) and gasdermin B (GSDMB) have been associated with childhood, and to a lesser extent with adult, asthma in many populations. AIMS: In this study, we investigated the association between GSDMA and GSDMB variants and the incidence of adult and childhood asthma among Jordanians. METHODS: Subjects were divided into two groups: adults and children. Within the adult group there were 129 asthma patients and 111 healthy controls...
March 2016: Genetic Testing and Molecular Biomarkers
Abeer Al Tuwaijri, Valérie Gagné-Ouellet, Anne-Marie Madore, Catherine Laprise, Anna K Naumova
BACKGROUND: Two asthma-associated regions 17q12-q21 and 5q31.1 harbour genes that show strong effect of genotype on expression levels. DNA methylation has an important role in gene regulation; therefore, we examined DNA methylation at promoters of 12 genes from 5q31 and 17q12-q21 regions. Our goal was to determine whether DNA methylation was associated with predisposition to asthma and whether such a relationship was independent from genetic association. METHODS: Using sodium bisulfite sequencing and pyrosequencing methylation assays, we examined the effect of genotype on DNA methylation in peripheral blood cells from individuals from the Saguenay-Lac-Saint-Jean asthma familial collection and lymphoblastoid cell lines...
April 2016: Journal of Medical Genetics
Jan Söderman, Linda Berglind, Sven Almer
To investigate the biological foundation of the inflammatory bowel disease (IBD), ulcerative colitis and Crohn's disease, susceptibility locus rs2872507, we have investigated the expression of 13 genes using ileal and colonic biopsies from patients with IBD (inflamed and noninflamed mucosa) or from individuals without IBD (noninflamed mucosa). The susceptibility allele was consistently associated with reduced expression of GSDMB (P = 4.1 × 10(-3)-7.2 × 10(-10)). The susceptibility allele was also associated with the increased expression of GSDMA (P = 1...
2015: BioMed Research International
Pei-Hsuan Lin, Hsien-Yi Lin, Cheng-Chin Kuo, Liang-Tung Yang
BACKGROUND: The epidermis forms a critical barrier that is maintained by orchestrated programs of proliferation, differentiation, and cell death. Gene mutations that disturb this turnover process may cause skin diseases. Human GASDERMIN A (GSDMA) is frequently silenced in gastric cancer cell lines and its overexpression has been reported to induce apoptosis. GSDMA has also been linked with airway hyperresponsiveness in genetic association studies. The function of GSDMA in the skin was deduced by dominant mutations in mouse gasdermin A3 (Gsdma3), which caused skin inflammation and hair loss...
June 24, 2015: Journal of Biomedical Science
Marta Hergueta-Redondo, David Sarrió, Ángela Molina-Crespo, Diego Megias, Alba Mota, Alejandro Rojo-Sebastian, Pablo García-Sanz, Saleta Morales, Sandra Abril, Amparo Cano, Héctor Peinado, Gema Moreno-Bueno
Gasdermin B (GSDMB) belongs to the Gasdermin protein family that comprises four members (GSDMA-D). Gasdermin B expression has been detected in some tumor types such as hepatocarcinomas, gastric and cervix cancers; and its over-expression has been related to tumor progression. At least four splicing isoforms of GSDMB have been identified, which may play differential roles in cancer. However, the implication of GSDMB in carcinogenesis and tumor progression is not well understood. Here, we uncover for the first time the functional implication of GSDMB in breast cancer...
2014: PloS One
Manuel A R Ferreira, Melanie C Matheson, Clara S Tang, Raquel Granell, Wei Ang, Jennie Hui, Amy K Kiefer, David L Duffy, Svetlana Baltic, Patrick Danoy, Minh Bui, Loren Price, Peter D Sly, Nicholas Eriksson, Pamela A Madden, Michael J Abramson, Patrick G Holt, Andrew C Heath, Michael Hunter, Bill Musk, Colin F Robertson, Peter Le Souëf, Grant W Montgomery, A John Henderson, Joyce Y Tung, Shyamali C Dharmage, Matthew A Brown, Alan James, Philip J Thompson, Craig Pennell, Nicholas G Martin, David M Evans, David A Hinds, John L Hopper
BACKGROUND: To date, no genome-wide association study (GWAS) has considered the combined phenotype of asthma with hay fever. Previous analyses of family data from the Tasmanian Longitudinal Health Study provide evidence that this phenotype has a stronger genetic cause than asthma without hay fever. OBJECTIVE: We sought to perform a GWAS of asthma with hay fever to identify variants associated with having both diseases. METHODS: We performed a meta-analysis of GWASs comparing persons with both physician-diagnosed asthma and hay fever (n = 6,685) with persons with neither disease (n = 14,091)...
June 2014: Journal of Allergy and Clinical Immunology
Shigekazu Tanaka, Youichi Mizushina, Yoriko Kato, Masaru Tamura, Toshihiko Shiroishi
Mouse Gasdermin A3 (Gsdma3) is the causative gene for dominant skin mutations exhibiting alopecia. Mouse has two other Gsdma3-related genes, Gsdma and Gsdma2, whereas human and rat have only one related gene. To date, no skin mutation has been reported for human GSDMA and rat Gsdma as well as mouse Gsdma and Gsdma2. Therefore, it is possible that only Gsdma3 has gain-of-function type mutations to cause dominant skin phenotype. To elucidate functional divergence among the Gsdma-related genes in mice, and to infer the function of the human and rat orthologs, we examined in vivo function of mouse Gsdma by generating Gsdma knockout mice and transgenic mice that overexpress wild-type Gsdma or Gsdma harboring a point mutation (Alanine339Threonine)...
October 2013: G3: Genes—Genomes—Genetics
Mario Blekic, Blazenka Kljaic Bukvic, Neda Aberle, Susana Marinho, Jenny Hankinson, Adnan Custovic, Angela Simpson
BACKGROUND: 17q12-21 polymorphisms are associated with asthma presence and severity across different populations. OBJECTIVE: To extensively investigate the genes in this region among Croatian schoolchildren in a case-control study, taking account of early-life environmental exposures. METHODS: We included 423 children with asthma and 414 controls aged 5 to 18 years. Fifty-one haplotype tagging single-nucleotide polymorphisms (SNPs) were genotyped (GSDMA, GSDMB, ORMDL3, IKZF3, ZPBP2, and TOP2)...
May 2013: Annals of Allergy, Asthma & Immunology
Ke Hao, Yohan Bossé, David C Nickle, Peter D Paré, Dirkje S Postma, Michel Laviolette, Andrew Sandford, Tillie L Hackett, Denise Daley, James C Hogg, W Mark Elliott, Christian Couture, Maxime Lamontagne, Corry-Anke Brandsma, Maarten van den Berge, Gerard Koppelman, Alise S Reicin, Donald W Nicholson, Vladislav Malkov, Jonathan M Derry, Christine Suver, Jeffrey A Tsou, Amit Kulkarni, Chunsheng Zhang, Rupert Vessey, Greg J Opiteck, Sean P Curtis, Wim Timens, Don D Sin
Genome-wide association studies (GWAS) have identified loci reproducibly associated with pulmonary diseases; however, the molecular mechanism underlying these associations are largely unknown. The objectives of this study were to discover genetic variants affecting gene expression in human lung tissue, to refine susceptibility loci for asthma identified in GWAS studies, and to use the genetics of gene expression and network analyses to find key molecular drivers of asthma. We performed a genome-wide search for expression quantitative trait loci (eQTL) in 1,111 human lung samples...
2012: PLoS Genetics
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