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Retinoic acid

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https://www.readbyqxmd.com/read/29147614/exploiting-a-new-strategy-to-induce-immunogenic-cell-death-to-improve-dendritic-cell-based-vaccines-for-lymphoma-immunotherapy
#1
B Montico, C Lapenta, M Ravo, D Martorelli, E Muraro, B Zeng, E Comaro, M Spada, S Donati, S M Santini, R Tarallo, G Giurato, F Rizzo, A Weisz, F Belardelli, R Dolcetti, J Dal Col
Although promising, the clinical benefit provided by dendritic cell (DC)-based vaccines is still limited and the choice of the optimal antigen formulation is still an unresolved issue. We have developed a new DC-based vaccination protocol for aggressive and/or refractory lymphomas which combines the unique features of interferon-conditioned DC (IFN-DC) with highly immunogenic tumor cell lysates (TCL) obtained from lymphoma cells undergoing immunogenic cell death. We show that treatment of mantle cell lymphoma (MCL) and diffuse large B-cell lymphoma (DLBCL) cell lines with 9-cis-retinoic acid and IFNα (RA/IFNα) induces early membrane exposure of Calreticulin, HSP70 and 90 together with CD47 down-regulation and enhanced HMGB1 secretion...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29144959/induction-of-innervation-by-encapsulated-adipocytes-with-engineered-vitamin-a-metabolism
#2
Q Shen, R Yasmeen, J Marbourg, L Xu, J L Yu, P Fadda, A Flechtner, L J Lee, P G Popovich, O Ziouzenkova
Innervation is a fundamental basis for function and survival of tissues. In the peripheral tissues, degenerative diseases create a neurotoxic metabolic milieu that either causes neurodegeneration or fails to sustain regenerative growth and reinnervation of injured/diseased tissues. Encapsulation of cells producing neurotrophic factors can augment axon growth and neuron survival; however, sustained innervation in vivo requires a combination of factors promoting axon growth and guidance pathway that are released in a tissue-specific context...
October 28, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/29142418/marantodes-pumilum-blume-kuntze-inhibited-secretion-of-lipopolysaccharide-and-monosodium-urate-crystal-stimulated-cytokines-and-plasma-prostaglandin-e2
#3
Eldiza Puji Rahmi, Jamia Azdina Jamal, Endang Kumolosasi, Juriyati Jalil, Nor-Ashila Aladdin
Background: Marantodes pumilum is traditionally used for dysentery, gonorrhea, and sickness in the bones. Previous studies revealed its antibacterial and xanthine oxidase inhibitory activities. Objective: To evaluate the inhibitory effects of three M. pumilum varieties on the secretion of lipopolysaccharide (LPS)- and monosodium urate crystal (MSU)-induced cytokines and plasma prostaglandin E2 (PGE2) in vitro. Materials and Methods: The leaves and roots of M...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29141367/-differentiation-of-induced-pluripotent-stem-cells-into-neural-stem-cells-induced-by-brain-derived-neurotrophic-factor-via-wnt-%C3%AE-catenin-and-extracellular-signal-regulated-kinase-mitogen-activated-protein-kinases-signal-pathway
#4
S Q Chen, M Huang, C L Liu, Y Y Shen, Q Cai, P J Wang
Objective: To investigate the mechanism of brain-derived neurotrophic factor (BDNF) promoting induced pluripotent stem cells (iPSCs) to differentiate into neural stem cells (NSCs) via Wnt/β-catenin and extracellular signal-regulated kinase/mitogen-activated protein kinases (ERK/MAPK) signal pathways. Methods: iPSCs were cultured and identified. The iPSCs were induced to differentiate into NSCs by BDNF and retinoic acid (RA). Nestin was detected by immunofluorescence and flow cytometry after iPSCs differentiated...
November 7, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29139475/intestinal-epithelial-cell-specific-rar%C3%AE-depletion-results-in-aberrant-epithelial-cell-homeostasis-and-underdeveloped-immune-system
#5
H B Jijon, L Suarez-Lopez, O E Diaz, S Das, J De Calisto, M B Yaffe, M J Pittet, J R Mora, Y Belkaid, R J Xavier, E J Villablanca
Retinoic acid (RA), a dietary vitamin A metabolite, is crucial in maintaining intestinal homeostasis. RA acts on intestinal leukocytes to modulate their lineage commitment and function. Although the role of RA has been characterized in immune cells, whether intestinal epithelial cells (IECs) rely on RA signaling to exert their immune-regulatory function has not been examined. Here we demonstrate that lack of RA receptor α (RARα) signaling in IECs results in deregulated epithelial lineage specification, leading to increased numbers of goblet cells and Paneth cells...
November 15, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/29138846/itr%C3%A2-284-modulates-cell-differentiation-in-human-chronic-myelogenous-leukemia-k562-cells
#6
Jai-Sing Yang, Chao-Ying Lee, Hsin-Chung Cho, Chi-Cheng Lu, Sheng-Chu Kuo, Yen-Fang Wen, Fuu-Jen Tsai, Miau-Rong Lee, Shih-Chang Tsai
ITR‑284 is a carboxamide analog that can inhibit proliferation in human promyelocytic leukemia HL-60 cells. To understand the effects and molecular mechanisms of ITR‑284 in human erythromyeloblastoid leukemia, we treated K562 cells with different concentrations of ITR‑284 (0, 2, 4, 6, 8 and 10 nM) and all-trans retinoic acid (ATRA) (0, 0.1, 0.5, 1, 5 and 10 µM) for 24 h. The IC50 of ITR‑284 was ~10 nM in K562 cells treated for 24 h as determined by MTT assay. May-Grünwald-Giemsa staining and nitro blue tetrazolium (NBT) assays were used to determine cell morphology changes and differentiation after ITR‑284 and ATRA treatment...
November 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29138588/rai1-gene-mutations-mechanisms-of-smith-magenis-syndrome
#7
REVIEW
Mariateresa Falco, Sonia Amabile, Fabio Acquaviva
Smith-Magenis syndrome (SMS; OMIM #182290) is a complex genetic disorder characterized by distinctive physical features, developmental delay, cognitive impairment, and a typical behavioral phenotype. SMS is caused by interstitial 17p11.2 deletions, encompassing multiple genes and including the retinoic acid-induced 1 gene (RAI1), or by mutations in RAI1 itself. About 10% of all the SMS patients, in fact, carry an RAI1 mutation responsible for the phenotype. RAI1 (OMIM *607642) is a dosage-sensitive gene expressed in many tissues and highly conserved among species...
2017: Application of Clinical Genetics
https://www.readbyqxmd.com/read/29138531/anti-inflammatory-strategy-for-m2-microglial-polarization-using-retinoic-acid-loaded-nanoparticles
#8
Marta Machado-Pereira, Tiago Santos, Lino Ferreira, Liliana Bernardino, Raquel Ferreira
Inflammatory mechanisms triggered by microglial cells are involved in the pathophysiology of several brain disorders, hindering repair. Herein, we propose the use of retinoic acid-loaded polymeric nanoparticles (RA-NP) as a means to modulate microglia response towards an anti-inflammatory and neuroprotective phenotype (M2). RA-NP were first confirmed to be internalized by N9 microglial cells; nanoparticles did not affect cell survival at concentrations below 100 μg/mL. Then, immunocytochemical studies were performed to assess the expression of pro- and anti-inflammatory mediators...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29137417/inhibition-of-retinoic-acid-receptor-%C3%AE-signaling-confers-glycolytic-dependence-and-sensitization-to-dichloroacetate-in-melanoma-cells
#9
Cecilie Abildgaard, Christina Dahl, Ahmad Abdul-Al, Annette Christensen, Per Guldberg
Dysregulation of metabolism during melanoma progression is tightly associated with the acquisition of genetic and epigenetic alterations in regulators of metabolic pathways. Retinoic acid receptor beta (RARβ) is epigenetically silenced in a large proportion of melanomas, but a link between RARβ and metabolic rewiring of melanoma has not been established. Here, we show that in primary human melanocytes, all-trans retinoic acid (a RARβ agonist) induced growth inhibition accompanied by a decrease in both glycolytic and oxidative metabolism, whereas selective inhibition of RARβ led to an increase in the basal glycolytic rate and increased sensitivity to inhibition of glycolysis...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137406/the-forkhead-box-c1-foxc1-transcription-factor-is-downregulated-in-acute-promyelocytic-leukemia
#10
Emiliano Fabiani, Giulia Falconi, Nélida Inés Noguera, Ernestina Saulle, Laura Cicconi, Mariadomenica Divona, Cristina Banella, Alessandra Picardi, Anna Maria Cerio, Letizia Boe, Massimo Sanchez, Elvira Pelosi, Ugo Testa, Francesco Lo-Coco, Maria Teresa Voso
Forkhead box (FOX) genes encode transcription factors, which regulate embryogenesis and play an important role in hematopoietic differentiation and in mesenchymal niche maintenance. Overexpression of the family member FOXC1 has been reported in solid tumors and acute myeloid leukemia (AML). We studied FOXC1 expression and function in acute promyelocytic leukemia (APL) and normal hematopoietic progenitors. FOXC1 mRNA and protein levels were significantly lower in primary marrow samples from 27 APL patients, as compared to samples obtained from 27 patients with other AML subtypes, and 5 normal CD34+ hematopoietic cells...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29136503/acute-promyelocytic-leukemia-a-paradigm-for-oncoprotein-targeted-cure
#11
REVIEW
Hugues de Thé, Pier Paolo Pandolfi, Zhu Chen
Recent clinical trials have demonstrated that the immense majority of acute promyelocytic leukemia (APL) patients can be definitively cured by the combination of two targeted therapies: retinoic acid (RA) and arsenic. Mouse models have provided unexpected insights into the mechanisms involved. Restoration of PML nuclear bodies upon RA- and/or arsenic-initiated PML/RARA degradation is essential, while RA-triggered transcriptional activation is dispensable for APL eradication. Mutations of the arsenic-binding site of PML/RARA, but also PML, have been detected in therapy-resistant patients, demonstrating the key role of PML in APL cure...
November 13, 2017: Cancer Cell
https://www.readbyqxmd.com/read/29134197/directed-differentiation-of-human-pluripotent-stem-cells-to-blood-brain-barrier-endothelial-cells
#12
Tongcheng Qian, Shaenah E Maguire, Scott G Canfield, Xiaoping Bao, William R Olson, Eric V Shusta, Sean P Palecek
The blood-brain barrier (BBB) is composed of specialized endothelial cells that are critical to neurological health. A key tool for understanding human BBB development and its role in neurological disease is a reliable and scalable source of functional brain microvascular endothelial cells (BMECs). Human pluripotent stem cells (hPSCs) can theoretically generate unlimited quantities of any cell lineage in vitro, including BMECs, for disease modeling, drug screening, and cell-based therapies. We demonstrate a facile, chemically defined method to differentiate hPSCs to BMECs in a developmentally relevant progression via small-molecule activation of key signaling pathways...
November 2017: Science Advances
https://www.readbyqxmd.com/read/29132350/avian-infectious-bronchitis-virus-disrupts-the-melanoma-differentiation-associated-gene-5-mda5-signaling-pathway-by-cleavage-of-the-adaptor-protein-mavs
#13
Liping Yu, Xiaorong Zhang, Tianqi Wu, Jin Su, Yuyang Wang, Yuexin Wang, Baoyang Ruan, Xiaosai Niu, Yantao Wu
BACKGROUND: Melanoma differentiation associated gene 5 (MDA5) and retinoic acid-inducible gene-I (RIG-I) selectively sense cytoplasmic viral RNA to induce an antiviral immune response. Infectious bronchitis virus (IBV) is one of the most important infectious agents in chickens, and in chicken cells, it can be recognized by MDA5 to activate interferon production. RIG-I is considered to be absent in chickens. However, the absence of RIG-I in chickens raises the question of whether this protein influences the antiviral immune response against IBV infection...
November 13, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29131833/mek-inhibitors-enhance-therapeutic-response-towards-atra-in-nf1-associated-malignant-peripheral-nerve-sheath-tumors-mpnst-in-vitro
#14
Susan Fischer-Huchzermeyer, Anna Dombrowski, Gordon Wilke, Verena Stahn, Anna Streubel, Victor Felix Mautner, Anja Harder
OBJECTIVE: Neurofibromatosis type 1 (NF1) is a hereditary tumor syndrome characterized by an increased risk of malignant peripheral nerve sheath tumors (MPNST). Chemotherapy of MPNST is still insufficient. In this study, we investigated whether human tumor Schwann cells derived from NF1 associated MPNST respond to all-trans retinoic acid (ATRA). We analyzed effects of ATRA and MEK inhibitor (MEKi) combination therapy. METHODS: MPNST cell lines S462, T265, NSF1 were treated with ATRA and MEKi U0126 and PD0325901...
2017: PloS One
https://www.readbyqxmd.com/read/29131551/%C3%AE-cryptoxanthin-inhibits-angiogenesis-in-human-umbilical-vein-endothelial-cells-huvec-through-retinoic-acid-receptor-rar
#15
José Manuel Quesada-Gómez, Raquel Santiago-Mora, Mario Durán-Prado, Gabriel Dorado, Gema Pereira-Caro, José Manuel Moreno-Rojas, Antonio Casado-Díaz
SCOPE: β-Cryptoxanthin is an abundant carotenoid in fruits and vegetables that can be quantified in human blood-serum. Yet, contrary to other carotenoids, its effects on endothelial cells and angiogenesis remain unknown. METHODS AND RESULTS: Human umbilical-vein endothelial cells (HUVEC) were treated with 0.01, 0.1 or 1 μM of β-cryptoxanthin. Antioxidant activity was determined by its free radical scavenging and oxygen-radical absorbance capacity (ABTS and ORAC assays)...
November 13, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29128356/secreted-glycoprotein-bmapod1-plays-a-critical-role-in-anti-oxidation-and-anti-apoptosis-in-bombyx-mori
#16
Yanyan Zhou, Li Wang, Rongqiao Li, Minmin Liu, Xiaotong Li, Hang Su, Yusong Xu, Huabing Wang
Recent studies highlighted that apolipoprotein D (ApoD) and its homologs exert neuroprotective and antioxidant functions in mammals and Drosophila. Unlike mammals and Drosophila, lepidopteran insects possess three distinct ApoD homologs. However, few information on their functions in lepidopteran insects are available. In this study, we investigated the protective potential of a novel ApoD homolog, BmApoD1, in Bombyx mori. Quantitative PCR analyses demonstrated that BmApoD1 is extensively expressed at low levels during the larval stage but abundantly expressed in the testis during the pupal and adult stages...
November 8, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29126272/generation-of-alloantigen-specific-induced-treg-stabilized-by-vitamin-c-treatment-and-its-application-for-prevention-of-acute-graft-versus-host-disease-model
#17
Hidenori Kasahara, Taisuke Kondo, Hiroko Nakatsukasa, Shunsuke Chikuma, Minako Ito, Makoto Ando, Yutaka Kurebayashi, Takashi Sekiya, Taketo Yamada, Shinichiro Okamoto, Akihiko Yoshimura
Antigen-specific regulatory T cells (Tregs) possess the potential to reduce excess immune responses in autoimmune diseases, allergy, rejection after organ transplantation, and graft-versus-host disease (GVHD) in hematopoietic stem-cell transplantation. Although in vitro-expanded antigen-specific induced Tregs (iTregs) have been considered to be a promising therapeutic agent against such excessive immune reactions, the instability of iTregs after transfer is a fundamental problem in their clinical application...
November 4, 2017: International Immunology
https://www.readbyqxmd.com/read/29122945/correction-to-association-of-serum-retinoic-acid-with-risk-of-mortality-in-patients-with-coronary-artery-disease
#18
(no author information available yet)
No abstract text is available yet for this article.
November 10, 2017: Circulation Research
https://www.readbyqxmd.com/read/29121519/iguratimod-ameliorates-inflammatory-responses-by-modulating-the-th17-treg-paradigm-in-dextran-sulphate-sodium-induced-murine-colitis
#19
Xue-Pei Jiang, Xie-Lin Huang, Zao-Peng Yang, Shun-Cai Wang, Wei Xie, Lei Miao, Li Tang, Zhi-Ming Huang
Inflammatory bowel disease (IBD) is an autoimmune disease with an abnormal and persistent immune response. Iguratimod, a novel anti-rheumatic drug, exhibits anti-inflammatory effects and regulates immune response. The role of iguratimod in intestinal mucosal inflammation and immunity has not been examined. The aim of this study was to investigate whether iguratimod ameliorates dextran sulphate sodium (DSS)-induced murine colitis and its potential regulatory mechanism. Murine colitis was induced by administering 2...
November 6, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/29120699/tolerability-response-and-outcome-of-high-risk-neuroblastoma-patients-treated-with-long-term-infusion-of-anti-gd2-antibody-ch14-18-cho
#20
Ina Mueller, Karoline Ehlert, Stefanie Endres, Lena Pill, Nikolai Siebert, Silke Kietz, Penelope Brock, Alberto Garaventa, Dominique Valteau-Couanet, Evelyne Janzek, Norbert Hosten, Andreas Zinke, Winfried Barthlen, Emine Varol, Hans Loibner, Ruth Ladenstein, Holger N Lode
Immunotherapy with short term infusion (STI) of monoclonal anti-GD2 antibody (mAb) ch14.18 (4 × 25mg/m(2)/d; 8-20h) in combination with cytokines and 13-cis retinoic acid (RA) prolonged survival in high-risk neuroblastoma (NB) patients. Here, we investigated long-term infusion (LTI) of ch14.18 produced in Chinese hamster ovary cells (ch14.18/CHO; 10 × 10mg/m(2); 24h) in combination with subcutaneous (s.c.) interleukin-2 (IL-2) in a single center program and report clinical response, toxicity and survival...
November 9, 2017: MAbs
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