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https://www.readbyqxmd.com/read/28428708/indoleamine-2-3-dioxygenase-as-a-potential-prognostic-marker-and-immunotherapeutic-target-for-hepatocellular-carcinoma
#1
REVIEW
Kashif Asghar, Asim Farooq, Bilal Zulfiqar, Muhammad Usman Rashid
Tumor cells induce an immunosuppressive microenvironment which leads towards tumor immune escape. Understanding the intricacy of immunomodulation by tumor cells is essential for immunotherapy. Indoleamine 2,3-dioxygenase (IDO) is an immunosuppressive enzyme which mediates tumor immune escape in various cancers including hepatocellular carcinoma (HCC). IDO up-regulation in HCC may lead to recruitment of regulatory T-cells into tumor microenvironment and therefore inhibit local immune responses and promote metastasis...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28428266/kca1-1-channels-regulate-%C3%AE-1-integrin-function-and-cell-adhesion-in-rheumatoid-arthritis-fibroblast-like-synoviocytes
#2
Mark R Tanner, Michael W Pennington, Teresina Laragione, Pércio S Gulko, Christine Beeton
Large-conductance calcium-activated potassium channel (KCa1.1; BK, Slo1, MaxiK, KCNMA1) is the predominant potassium channel expressed at the plasma membrane of fibroblast-like synoviocytes isolated from the synovium of patients with rheumatoid arthritis (RA-FLS). It is a critical regulator of RA-FLS migration and invasion and therefore represents an attractive target for the therapy of RA. However, the molecular mechanisms by which KCa1.1 regulates RA-FLS invasiveness have remained largely unknown. Here, we demonstrate that KCa1...
April 20, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28427446/respiratory-chain-complex-iii-deficiency-due-to-mutated-bcs1l-a-novel-phenotype-with-encephalomyopathy-partially-phenocopied-in-a-bcs1l-mutant-mouse-model
#3
Saara Tegelberg, Nikica Tomašić, Jukka Kallijärvi, Janne Purhonen, Eskil Elmér, Eva Lindberg, David Gisselsson Nord, Maria Soller, Nicole Lesko, Anna Wedell, Helene Bruhn, Christoph Freyer, Henrik Stranneheim, Rolf Wibom, Inger Nennesmo, Anna Wredenberg, Erik A Eklund, Vineta Fellman
BACKGROUND: Mitochondrial diseases due to defective respiratory chain complex III (CIII) are relatively uncommon. The assembly of the eleven-subunit CIII is completed by the insertion of the Rieske iron-sulfur protein, a process for which BCS1L protein is indispensable. Mutations in the BCS1L gene constitute the most common diagnosed cause of CIII deficiency, and the phenotypic spectrum arising from mutations in this gene is wide. RESULTS: A case of CIII deficiency was investigated in depth to assess respiratory chain function and assembly, and brain, skeletal muscle and liver histology...
April 20, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28426281/identification-of-ssea-1-expressing-enhanced-reprogramming-seer-cells-in-porcine-embryonic-fibroblasts
#4
Dong Li, Jan O Secher, Morten Juhl, Kaveh Mashayekhi, Troels T Nielsen, Bjørn Holst, Poul Hyttel, Kristine K Freude, Vanessa J Hall
Previous research has shown that a subpopulation of cells within cultured human dermal fibroblasts, termed multilineage-differentiating stress enduring (Muse) cells, are preferentially reprogrammed into induced pluripotent stem cells. However, controversy exists over whether these cells are the only cells capable of being reprogrammed from a heterogeneous population of fibroblasts. Similarly, there is little research to suggest such cells may exist in embryonic tissues or other species. In order to address if such a cell population exists in pigs, we investigated porcine embryonic fibroblast populations (pEFs) and identified heterogeneous expression of several key cell surface markers...
April 20, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28426083/energetic-isomers-of-1-2-4-5-tetrazine-bis-1-2-4-triazoles-with-low-toxicity
#5
A Shlomovich, T Pechersky, A Cohen, Q L Yan, M Kosa, N Petrutik, N Tal, A Aizikovich, M Gozin
A series of nitrogen-rich "green" Energetic Materials (EMs), some with improved sensitivity, thermostability, and very low toxicity, were synthesized on the basis of 3,5-diamino-1,2,4-triazole (DAT) and 1,2,4,5-tetrazine building blocks. Since DAT contains several nucleophilic reactive sites, obtaining selective reactivity and specific isomeric products with 1,2,4,5-tetrazine precursors is a challenging task. We developed reaction conditions under which specific isomers could be prepared. On evaluating these compounds for their energetic properties, we found that N(5),N(5)'-(1,2,4,5-tetrazine-3,6-diyl)-bis(1H-1,2,4-triazole-3,5-diamine) 1 has very high thermostability (onset of decomposition temperature at 357 °C) and it is insensitive to impact (Im > 98 J), friction (>360 N) and electrostatic discharge (2512 mJ)...
April 20, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28419140/niche-matters-the-comparison-between-bone-marrow-stem-cells-and-endometrial-stem-cells-and-stromal-fibroblasts-reveal-distinct-migration-and-cytokine-profiles-in-response-to-inflammatory-stimulus
#6
Masuma Khatun, Anna Sorjamaa, Marika Kangasniemi, Meeri Sutinen, Tuula Salo, Annikki Liakka, Petri Lehenkari, Juha S Tapanainen, Olli Vuolteenaho, Joseph C Chen, Siri Lehtonen, Terhi T Piltonen
OBJECTIVE: Intrinsic inflammatory characteristics play a pivotal role in stem cell recruitment and homing through migration where the subsequent change in niche has been shown to alter these characteristics. The bone marrow mesenchymal stem cells (bmMSCs) have been demonstrated to migrate to the endometrium contributing to the stem cell reservoir and regeneration of endometrial tissue. Thus, the aim of the present study was to compare the inflammation-driven migration and cytokine secretion profile of human bmMSCs to endometrial mesenchymal stem cells (eMSCs) and endometrial fibroblasts (eSFs)...
2017: PloS One
https://www.readbyqxmd.com/read/28417072/atypical-juvenile-presentation-of-gm2-gangliosidosis-ab-in-a-patient-compound-heterozygote-for-c-259g%C3%A2-%C3%A2-t-and-c-164c%C3%A2-%C3%A2-t-mutations-in-the-gm2a-gene
#7
Carla Martins, Catherine Brunel-Guitton, Anne Lortie, France Gauvin, Carlos R Morales, Grant A Mitchell, Alexey V Pshezhetsky
GM2-gangliosidosis, AB variant is an extremely rare autosomal recessive inherited disorder caused by mutations in the GM2A gene that encodes GM2 ganglioside activator protein (GM2AP). GM2AP is necessary for solubilisation of GM2 ganglioside in endolysosomes and its presentation to β-hexosaminidase A. Conversely GM2AP deficiency impairs lysosomal catabolism of GM2 ganglioside, leading to its storage in cells and tissues. We describe a 9-year-old child with an unusual juvenile clinical onset of GM2-gangliosidosis AB...
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28415444/formulation-of-thermoreversible-gel-of-cranberry-juice-concentrate-evaluation-biocompatibility-studies-and-its-antimicrobial-activity-against-periodontal-pathogens
#8
Rajeshwari H R, Dinesh Dhamecha, Satveer Jagwani, Dhanashree Patil, Satisha Hegde, Raksha Potdar, Renuka Metgud, Sunil Jalalpure, Subarna Roy, Kiran Jadhav, Neeraj Kumar Tiwari, Sravani Koduru, Shweta Hugar, Suneel Dodamani
The present work aims to investigate the efficacy of thermoreversible gel of cranberry juice concentrate (CJC) as local drug delivery for the treatment of periodontitis. CJC was initially tested for its antimicrobial activities like MIC, MBC, antiadhesion, antibiofilm and time kill assay against the panel of organisms (S. mutans (SM), E. faecalis (EF), A. actinomycetemcomitans (AA), P. gingivalis (PG), T. forsythia (TF)) responsible for periapical and periodontal infections. Antimicrobial activity of CJC showed MIC value of 50mg/ml and MBC value of 100mg/ml with desirable antiadhesion (83-90%) and antibiofilm activity (70-85%)...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28415381/biocompatibility-study-on-ni-free-ti-based-and-zr-based-bulk-metallic-glasses
#9
T H Li, P C Wong, S F Chang, P H Tsai, J S C Jang, J C Huang
Safety and reliability are crucial issues for medical instruments and implants. In the past few decays, bulk metallic glasses (BMGs) have drawn attentions due to their superior mechanical properties, good corrosion resistance, antibacterial and good biocompatibility. However, most Zr-based and Ti-based BMGs contain Ni as an important element which is prone to human allergy problem. In this study, the Ni-free Ti-based and Zr-based BMGs, Ti40Zr10Cu36Pd14, and Zr48Cu36Al8Ag8, were selected for systematical evaluation of their biocompatibility...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28411440/tweak-fn14-promotes-pro-inflammatory-cytokine-secretion-in-hepatic-stellate-cells-via-nf-%C3%AE%C2%BAb-stat3-pathways
#10
Aixiu Wang, Feng Zhang, Hui Xu, Mingcui Xu, Yu Cao, Chen Wang, Yuanyuan Xu, Min Su, Ming Zhang, Yuzheng Zhuge
Tumor necrosis factor-like weak inducer of apoptosis (TWEAK) and its receptor fibroblast growth factor-inducible 14 (Fn14) have been associated with liver disease. Hepatic stellate cells (HSCs) play a critical role in the hepatic wound-healing response after liver injury, but there is little information available on the role of the TWEAK/Fn14 pathway in human HSCs. In this study, we explored the role of TWEAK/Fn14 in activated human HSCs. The LX-2 cells were treated with TWEAK, and the expression of pro-inflammatory cytokines was assayed by enzyme-linked immunosorbent assay (ELISA) and real-time PCR (RT-PCR)...
April 12, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28408205/temporal-spatial-and-phenotypical-changes-of-pdgfr%C3%AE-expressing-fibroblasts-during-late-lung-development
#11
Mehari Endale, Shawn Ahlfeld, Erik Bao, Xiaoting Chen, Jenna Green, Zach Bess, Matthew T Weirauch, Yan Xu, Anne Karina Perl
Many studies have investigated the source and role of epithelial progenitors during lung development; such information is limited for fibroblast populations and their complex role in the developing lung. In this study, we characterized the spatial location, mRNA expression and Immunophenotyping of PDGFRα(+) fibroblasts during sacculation and alveolarization. Confocal microscopy identified spatial association of PDGFRα expressing fibroblasts with proximal epithelial cells of the branching bronchioles and the dilating acinar tubules at E16...
April 11, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28407719/anti-inflammatory-activity-of-clove-eugenia-caryophyllata-essential-oil-in-human-dermal-fibroblasts
#12
Xuesheng Han, Tory L Parker
CONTEXT: Clove (Eugenia caryophyllata Thunb. [Myrtaceae]) essential oil (CEO) has been shown to possess antimicrobial, antifungal, antiviral, antioxidant, anti-inflammatory and anticancer properties. However, few studies have focused on its topical use. OBJECTIVE: We investigated the biological activity of a commercially available CEO in a human skin disease model. MATERIALS AND METHODS: We evaluated the effect of CEO on 17 protein biomarkers that play critical roles in inflammation and tissue remodelling in a validated human dermal fibroblast system, which was designed to model chronic inflammation and fibrosis...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28405500/zoledronate-can-induce-colorectal-cancer-microenvironment-expressing-btn3a1-to-stimulate-effector-%C3%AE-%C3%AE-t-cells-with-antitumor-activity
#13
Maria Raffaella Zocchi, Delfina Costa, Roberta Venè, Francesca Tosetti, Nicoletta Ferrari, Simona Minghelli, Roberto Benelli, Stefano Scabini, Emanuele Romairone, Silvia Catellani, Aldo Profumo, Alessandro Poggi
Amino-bis-phosphonates (N-BPs) such as zoledronate (Zol) have been used in anticancer clinical trials due to their ability to upregulate pyrophosphate accumulation promoting antitumor Vγ9Vδ2 T cells. The butyrophilin 3A (BTN3A, CD277) family, mainly the BTN3A1 isoform, has emerged as an important structure contributing to Vγ9Vδ2 T cells stimulation. It has been demonstrated that the B30.2 domain of BTN3A1 can bind phosphoantigens (PAg) and drive the activation of Vγ9Vδ2 T cells through conformational changes of the extracellular domains...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28395280/triple-a-syndrome-preliminary-response-to-the-antioxidant-n-acetylcysteine-treatment-in-a-child
#14
Maria Candida Barisson Villares Fragoso, Edoarda Vasco de Albuquerque Albuquerque, Ana Luiza de Almeida Cardoso, Paula Waki Lopes da Rosa, Rodrigo Bomeny de Paulo, Maria Heloisa Massola Schimizu, Antonio Carlos Seguro, Marisa Passarelli, Katrin Koehler, Angela Huebner, Madson Q Almeida, Ana Claudia Latronico, Ivo Jorge Prado Arnhold, Berenice Bilharinho Mendonca
INTRODUCTION: Triple A syndrome (AAAS) is a rare autosomal recessive disorder characterized by alacrima, achalasia, ACTH-resistant adrenal insufficiency, autonomic dysfunction, and progressive neurodegeneration. Increased oxidative stress, demonstrated in patients' fibroblasts in vitro, may be a central disease mechanism. N-acetylcysteine protects renal function in patients with kidney injuries associated with increased oxidative stress and improves viability of AAAS-knockdown adrenal cells in vitro...
April 10, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28394354/oncogenic-mct-1-activation-promotes-yy1-egfr-mnsod-signaling-and-tumor-progression
#15
H-Y Tseng, Y-A Chen, J Jen, P-C Shen, L-M Chen, T-D Lin, Y-C Wang, H-L Hsu
Tumor cells often produce high levels of reactive oxygen species (ROS) and display an increased ROS scavenging system. However, the molecular mechanism that balances antioxidative and oxidative stress in cancer cells is unclear. Here, we determined that oncogenic multiple copies in T-cell malignancy 1 (MCT-1) activity promotes the generation of intracellular ROS and mitochondrial superoxide. Overexpression of MCT-1 suppresses p53 accumulation but elevates the manganese-dependent superoxide dismutase (MnSOD) level via the YY1-EGFR signaling cascade, which protects cells against oxidative damage...
April 10, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28392572/an-apoptosis-independent-role-of-trail-in-suppressing-joint-inflammation-and-inhibiting-t-cell-activation-in-inflammatory-arthritis
#16
I-Tsu Chyuan, Hwei-Fang Tsai, Hsiu-Jung Liao, Chien-Sheng Wu, Ping-Ning Hsu
Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) has been implicated in the regulation of inflammation in rheumatoid arthritis (RA), primarily due to its ability to promote apoptosis in synoviocytes and infiltrating lymphocytes. The aim of this study was to investigate the immunomodulatory mechanism and role of TRAIL in inflammatory arthritis. We created an animal model of inflammatory arthritis and demonstrated that TRAIL significantly inhibited joint inflammation and reduced the severity of arthritis...
April 10, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28390992/patient-specific-induced-pluripotent-stem-cells-to-evaluate-the-pathophysiology-of-trnt1-associated-retinitis-pigmentosa
#17
Tasneem P Sharma, Luke A Wiley, S Scott Whitmore, Kristin R Anfinson, Cathryn M Cranston, Douglas J Oppedal, Heather T Daggett, Robert F Mullins, Budd A Tucker, Edwin M Stone
Retinitis pigmentosa (RP) is a heterogeneous group of monogenic disorders characterized by progressive death of the light-sensing photoreceptor cells of the outer neural retina. We recently identified novel hypomorphic mutations in the tRNA Nucleotidyl Transferase, CCA-Adding 1 (TRNT1) gene that cause early-onset RP. To model this disease in vitro, we generated patient-specific iPSCs and iPSC-derived retinal organoids from dermal fibroblasts of patients with molecularly confirmed TRNT1-associated RP. Pluripotency was confirmed using rt-PCR, immunocytochemistry, and a TaqMan Scorecard Assay...
March 18, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28386106/mpl-activation-directly-induces-fibrocyte-differentiation-to-cause-myelofibrosis
#18
T Maekawa, Y Osawa, T Izumi, S Nagao, K Takano, Y Okada, N Tachi, M Teramoto, T Kawamura, T Horiuchi, R Saga, S Kato, T Yamamura, J Watanabe, A Kobayashi, S Kobayashi, K Sato, M Hashimoto, S Suzu, F Kimura
Myelofibrosis (MF) may be caused by various pathogenic mechanisms such as elevation in circulating cytokine levels, cellular interactions, and genetic mutations. However, the underlying mechanism of MF still remains unknown. Recent studies have revealed that fibrocytes, the spindle-shaped fibroblast-like hematopoietic cells, and the thrombopoietin (TPO)/myeloproliferative leukemia protein (MPL; TPO receptor) signaling pathway play a certain role in the development of MF. In the present study, we aimed to investigate the relationship between fibrocytes and MPL activation...
April 7, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28385331/generalized-verrucosis-and-abnormal-t-cell-activation-due-to-homozygous-taok2-mutation
#19
Vered Molho-Pessach, Yuval Ramot, Maxim Mogilevsky, Leonor Cohen-Daniel, Eli M Eisenstein, Abdulsalam Abu-Libdeh, Ihab Siam, Michael Berger, Rotem Karni, Abraham Zlotogorski
BACKGROUND: Generalized verrucosis (GV) is a chronic and progressive cutaneous human papillomavirus (HPV) infection resulting in multiple warts and associated with acquired or genetic immune defects. We identified a consanguineous Arab family manifesting GV and recurrent bacterial and viral infections, in association with inflammatory bowel disease (IBD). OBJECTIVE: To identify the mutated gene responsible for GV, recurrent infections and IBD, in this family. METHODS: Flow cytometry of peripheral blood mononuclear cells was performed, as well as proliferation and cell cycle assays of T cells...
March 27, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28383556/synovial-cell-death-is-regulated-by-tnf-%C3%AE-induced-expression-of-b-cell-activating-factor-through-an-erk-dependent-increase-in-hypoxia-inducible-factor-1%C3%AE
#20
Jae-Wook Lee, Jiyoung Lee, Sung Hee Um, Eun-Yi Moon
B-cell activating factor (BAFF) has a role in the maturation and maintenance of B cells and is associated with rheumatoid arthritis (RA). Here, we investigated whether tumor necrosis factor (TNF)-α-induced BAFF expression controls the survival of fibroblast-like synoviocytes (FLS) and whether their survival can be regulated by TNF-α-mediated upregulation of hypoxia-inducible factor (HIF)-1α using MH7A synovial cells transfected with the SV40 T antigen. More TNF-α-treated cells died compared with the control...
April 6, 2017: Cell Death & Disease
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