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https://www.readbyqxmd.com/read/29163402/pharmacological-induction-of-heme-oxygenase-1-impairs-nuclear-accumulation-of-herpes-simplex-virus-capsids-upon-infection
#1
Francisco J Ibáñez, Mónica A Farías, Angello Retamal-Díaz, Janyra A Espinoza, Alexis M Kalergis, Pablo A González
Heme oxygenase-1 (HO-1) is an inducible enzyme that is expressed in response to physical and chemical stresses, such as ultraviolet radiation, hyperthermia, hypoxia, reactive oxygen species (ROS), as well as cytokines, among others. Its activity can be positively modulated by cobalt protoporphyrin (CoPP) and negatively by tin protoporphirin (SnPP). Once induced, HO-1 degrades iron-containing heme into ferrous iron (Fe(2+)), carbon monoxide (CO) and biliverdin. Importantly, numerous products of HO-1 are cytoprotective with anti-apoptotic, anti-oxidant, anti-inflammatory, and anti-cancer effects...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29156487/evolution-and-molecular-mechanism-of-four-electron-reducing-ferredoxin-dependent-bilin-reductases-from-oceanic-phages
#2
Benjamin Ledermann, Meike Schwan, Johannes A Sommerkamp, Eckhard Hofmann, Oded Béjà, Nicole Frankenberg-Dinkel
Ferredoxin-dependent bilin reductases (FDBRs) are a class of enzymes reducing the heme metabolite biliverdin IXα (BV) to form open-chain tetrapyrroles used for light-perception and light-harvesting in photosynthetic organisms. Thus far, seven FDBR families have been identified, each catalyzing a distinct reaction and either transferring two or four electrons from ferredoxin onto the substrate. The newest addition to the family is PcyX, originally identified from metagenomics data derived from phage. Phylogenetically, PcyA is the closest relative catalyzing the reduction of BV to phycocyanobilin...
November 20, 2017: FEBS Journal
https://www.readbyqxmd.com/read/29122256/cupping-therapy-an-analysis-of-the-effects-of-suction-on-skin-and-the-possible-influence-on-human-health
#3
REVIEW
Duane T Lowe
BACKGROUND: Cupping therapy is a traditional therapy that has been employed worldwide for thousands of years. Despite a lack of quality clinical studies evaluating the efficacy of cupping therapy, its long history and widespread use throughout the world suggests the commonly claimed health benefits should not be completely discounted as without merit. PURPOSE: The goal of this paper is to present the research detailing what is known concerning the effects of suction on skin and underlying tissue, and the reaction of the body to that stimulus...
November 2017: Complementary Therapies in Clinical Practice
https://www.readbyqxmd.com/read/29110341/hemin-and-bile-pigments-are-the-secondary-structure-regulators-of-intrinsically-disordered-antimicrobial-peptides
#4
Ferenc Zsila, Tünde Juhász, Szilvia Bősze, Kata Horváti, Tamás Beke-Somfai
The interaction of protoporphyrin compounds of human origin with the major bee venom component melittin (26 a.a., Z +6) and its hybrid derivative (CM15, 15 a.a., Z +6) were studied by a combination of various spectroscopic methods. Throughout a two-state, concentration-dependent process, hemin and its metabolites (biliverdin, bilirubin, bilirubin ditaurate) increase the parallel β-sheet content of the natively unfolded melittin, suggesting the oligomerization of the peptide chains. In contrast, α-helix promoting effect was observed with the also disordered but more cationic CM15...
November 7, 2017: Chirality
https://www.readbyqxmd.com/read/29091422/engineering-an-e-coli-near-infrared-light-sensor
#5
Nicholas T Ong, Evan J Olson, Jeffrey J Tabor
Optogenetics is a technology wherein researchers combine light and genetically engineered photoreceptors to control biological processes with unrivaled precision. Near-infrared (NIR) wavelengths (>700 nm) are desirable optogenetic inputs due to their low phototoxicity and spectral isolation from most photoproteins. The bacteriophytochrome photoreceptor 1 (BphP1), found in several purple photosynthetic bacteria, senses NIR light and activates transcription of photosystem promoters by binding to and inhibiting the transcriptional repressor PpsR2...
November 9, 2017: ACS Synthetic Biology
https://www.readbyqxmd.com/read/29078307/efficient-synthesis-of-phycocyanobilin-in-mammalian-cells-for-optogenetic-control-of-cell-signaling
#6
Youichi Uda, Yuhei Goto, Shigekazu Oda, Takayuki Kohchi, Michiyuki Matsuda, Kazuhiro Aoki
Optogenetics is a powerful tool to precisely manipulate cell signaling in space and time. For example, protein activity can be regulated by several light-induced dimerization (LID) systems. Among them, the phytochrome B (PhyB)-phytochrome-interacting factor (PIF) system is the only available LID system controlled by red and far-red lights. However, the PhyB-PIF system requires phycocyanobilin (PCB) or phytochromobilin as a chromophore, which must be artificially added to mammalian cells. Here, we report an expression vector that coexpresses HO1 and PcyA with Ferredoxin and Ferredoxin-NADP+ reductase for the efficient synthesis of PCB in the mitochondria of mammalian cells...
November 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29065700/murine-bone-marrow-mesenchymal-stromal-cells-respond-efficiently-to-oxidative-stress-despite-the-low-level-of-heme-oxygenases-1-and-2
#7
Witold Norbert Nowak, Hevidar Taha, Neli Kachamakova-Trojanowska, Jacek Stepniewski, Joanna Agata Markiewicz, Anna Kusienicka, Krzysztof Szade, Agata Szade, Karolina Bukowska-Strakova, Karolina Hajduk, Damian Klóska, Aleksandra Kopacz, Anna Grochot-Przeczek, Kathrin Barthenheier, Camille Cauvin, Jozef Dulak, Alicja Jozkowicz
AIMS: Mesenchymal stromal cells (MSCs) are heterogeneous cells from adult tissues, able to differentiate in vitro into adipocytes, osteoblasts or chondrocytes. Such cells are widely studied in regenerative medicine. However, the success of cellular therapy depends on the cell survival. Heme oxygenase-1 (HO-1, encoded by the Hmox1 gene), an enzyme converting heme to biliverdin, carbon monoxide, and Fe2+, is cytoprotective and can affect stem cell performance. Therefore, our study aimed to assess if Hmox1 is critical for survival and functions of murine bone marrow MSCs...
October 25, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29017728/near-infrared-fluorescent-proteins-engineered-from-bacterial-phytochromes-in-neuroimaging
#8
Kiryl D Piatkevich, Ho-Jun Suk, Suhasa B Kodandaramaiah, Fumiaki Yoshida, Ellen M DeGennaro, Mikhail Drobizhev, Thomas E Hughes, Robert Desimone, Edward S Boyden, Vladislav V Verkhusha
Several series of near-infrared (NIR) fluorescent proteins (FPs) were recently engineered from bacterial phytochromes but were not systematically compared in neurons. To fluoresce, NIR FPs utilize an enzymatic derivative of heme, the linear tetrapyrrole biliverdin, as a chromophore whose level in neurons is poorly studied. Here, we evaluated NIR FPs of the iRFP protein family, which were reported to be the brightest in non-neuronal mammalian cells, in primary neuronal culture, in brain slices of mouse and monkey, and in mouse brain in vivo...
November 21, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28962110/effect-of-the-herbal-formulation-shen-zhi-ling-on-an-app-ps1-mouse-model-of-alzheimer-s-disease-by-modulating-the-biliverdin-reductase-heme-oxygenase-1-system
#9
Sanli Xing, Dingzhu Shen, Chuan Chen, Beiling Wu, Huiying Chi
Shen-Zhi-Ling (SZL) oral liquid is a traditional Chinese medicine formula that is mainly used for the clinical treatment of mild to moderate Alzheimer's disease (AD). The aim of the present study was to investigate the effects and underlying mechanisms of SZL treatment on AD. APP/PS1 transgenic mice were utilized to evaluate the effect of SZL treatment (0.5 g/20 g/day). Morris water maze and Thioflavin S staining analyses were used to evaluate the cognitive impairment and β-amyloid plaques, respectively, while quantitative polymerase chain reaction and western blot analysis were performed to examine the mRNA and protein expression levels of heme oxygenase 1 (HO-1) and biliverdin reductase (BVR)...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28937855/eggshell-biliverdin-and-protoporphyrin-pigments-in-a-songbird-are-they-derived-from-erythrocytes-blood-plasma-or-the-shell-gland
#10
Rita Hargitai, Nóra Boross, Susanne Hámori, Eszter Neuberger, Zoltán Nyiri
Biliverdin and protoporphyrin pigments are deposited into the eggshell when the developing egg is in the shell gland. However, the site of synthesis of eggshell pigments is still uncertain, although it may influence the possible costs and potential functions of eggshell coloration in avian species. Eggshell pigments may be derived from red blood cells or be produced in other organs and then transferred to the shell gland, or they may be synthesized de novo in the shell gland. We studied in the canary (Serinus canaria) whether eggshell blue-green and brown pigmentations are associated with experimentally elevated anemia, female hematocrit level, immature erythrocyte percentage, and feces and plasma pigment levels during egg laying to find out the possible origin of eggshell pigments...
November 2017: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/28927849/metabolome-wide-association-study-of-peripheral-parasitemia-in-plasmodium-vivax-malaria
#11
Luiz Gustavo Gardinassi, Regina Joice Cordy, Marcus V G Lacerda, Jorge L Salinas, Wuelton M Monteiro, Gisely C Melo, André M Siqueira, Fernando F Val, ViLinh Tran, Dean P Jones, Mary R Galinski, Shuzhao Li
BACKGROUND: Plasmodium vivax is one of the leading causes of malaria worldwide. Infections with this parasite cause diverse clinical manifestations, and recent studies revealed that infections with P. vivax can result in severe and fatal disease. Despite these facts, biological traits of the host response and parasite metabolism during P. vivax malaria are still largely underexplored. Parasitemia is clearly related to progression and severity of malaria caused by P. falciparum, however the effects of parasitemia during infections with P...
December 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28900278/function-coupling-mechanism-of-phus-and-hemo-in-heme-degradation
#12
Michael J Y Lee, Ye Wang, Yafei Jiang, Xichen Li, Jianqiu Ma, Hongwei Tan, Keegan Turner-Wood, Mona N Rahman, Guangju Chen, Zongchao Jia
Most bacteria possess only one heme-degrading enzyme for obtaining iron, however few bacteria such as Pseudomonas aeruginosa express two, namely PhuS and HemO. While HemO is a well-known heme oxygenase, previously we discovered that PhuS also possesses heme degradation activity and generates verdoheme, an intermediate of heme breakdown. To understand the coexistence of these two enzymes, using the DFT calculation we reveal that PhuS effectively enhances heme degradation through its participation in heme hydroxylation, the rate limiting reaction...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28899357/comparative-transcriptome-analysis-provides-clues-to-molecular-mechanisms-underlying-blue-green-eggshell-color-in-the-jinding-duck-anas-platyrhynchos
#13
Zhepeng Wang, Guohua Meng, Yun Bai, Ruifang Liu, Yu Du, Lihong Su
BACKGROUND: In birds, blue-green eggshell color (BGEC) is caused by biliverdin, a bile pigment derived from the degradation of heme and secreted in the eggshell by the shell gland. Functionally, BGEC might promote the paternal investment of males in the nest and eggs. However, little is known about its formation mechanisms. Jinding ducks (Anas platyrhynchos) are an ideal breed for research into the mechanisms, in which major birds lay BGEC eggs with minor individuals laying white eggs...
September 12, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28875070/dinosaur-origin-of-egg-color-oviraptors-laid-blue-green-eggs
#14
Jasmina Wiemann, Tzu-Ruei Yang, Philipp N Sander, Marion Schneider, Marianne Engeser, Stephanie Kath-Schorr, Christa E Müller, P Martin Sander
Protoporphyrin (PP) and biliverdin (BV) give rise to the enormous diversity in avian egg coloration. Egg color serves several ecological purposes, including post-mating signaling and camouflage. Egg camouflage represents a major character of open-nesting birds which accomplish protection of their unhatched offspring against visually oriented predators by cryptic egg coloration. Cryptic coloration evolved to match the predominant shades of color found in the nesting environment. Such a selection pressure for the evolution of colored or cryptic eggs should be present in all open nesting birds and relatives...
2017: PeerJ
https://www.readbyqxmd.com/read/28874192/plasma-metabolomic-study-in-chinese-patients-with-wet-age-related-macular-degeneration
#15
Dan Luo, Tingting Deng, Wei Yuan, Hui Deng, Ming Jin
BACKGROUND: Age-related macular degeneration (AMD) is a leading disease associated with blindness. It has a high incidence and complex pathogenesis. We aimed to study the metabolomic characteristics in Chinese patients with wet AMD by analyzing the morning plasma of 20 healthy controls and 20 wet AMD patients for metabolic differences. METHODS: We used ultra-high-pressure liquid chromatography and quadrupole-time-of-flight mass spectrometry for this analysis. The relationship of these differences with AMD pathophysiology was also assessed...
September 6, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28795139/elevated-preoperative-serum-bilirubin-improves-reperfusion-injury-and-survival-postliver-transplantation
#16
Vinzent Spetzler, Nicolas Goldaracena, Johann Moritz Kaths, Max Marquez, Markus Selzner, Nazia Selzner
BACKGROUND: The cytoprotective effects of hemeoxygenase-1 and its product biliverdin/bilirubin are widely acknowledged in experimental transplant medicine. However, its potentially beneficial effect during organ reperfusion is not established. METHODS: In a matched study, we compared markers of reperfusion injury (alanine aminotransferase/aspartate aminotransferase) and transplantation outcome (complication rates, liver function, and survival) between recipient groups with "normal" versus "increased" preoperative bilirubin values...
August 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28782566/small-monomeric-and-highly-stable-near-infrared-fluorescent-markers-derived-from-the-thermophilic-phycobiliprotein-apcf2
#17
Wen-Long Ding, Dan Miao, Ya-Nan Hou, Su-Ping Jiang, Bao-Qin Zhao, Ming Zhou, Hugo Scheer, Kai-Hong Zhao
Biliproteins have extended the spectral range of fluorescent proteins into the region of maximal transmission of most tissues and are favorable for multiplexing, but their application presents considerable challenges. Their fluorescence derives from open-chain tetrapyrrole chromophores which often require the introduction of dedicated reductases and lyases. In addition, their fluorescence yield generally decreases with increasing wavelengths and depends strongly on the state of the binding protein. We report fluorescent biliproteins, termed BDFPs, that are derived from the phycobilisome core subunit, ApcF2: this subunit is induced in the thermophilic cyanobacterium, Chroococcidiopsis thermalis, by far-red light and binds phycocyanobilin non-covalently...
August 3, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28771589/structural-and-mutational-analyses-of-the-leptospira-interrogans-virulence-related-heme-oxygenase-provide-insights-into-its-catalytic-mechanism
#18
Anabel Soldano, Sebastián Klinke, Lisandro H Otero, Mario Rivera, Daniela L Catalano-Dupuy, Eduardo A Ceccarelli
Heme oxygenase from Leptospira interrogans is an important virulence factor. During catalysis, redox equivalents are provided to this enzyme by the plastidic-type ferredoxin-NADP+ reductase also found in L. interrogans. This process may have evolved to aid this bacterial pathogen to obtain heme-iron from their host and enable successful colonization. Herein we report the crystal structure of the heme oxygenase-heme complex at 1.73 Å resolution. The structure reveals several distinctive features related to its function...
2017: PloS One
https://www.readbyqxmd.com/read/28756878/heme-oxygenase-1-a-new-druggable-target-in-the-management-of-chronic-and-acute-myeloid-leukemia
#19
REVIEW
Loredana Salerno, Giuseppe Romeo, Maria N Modica, Emanuele Amata, Valeria Sorrenti, Ignazio Barbagallo, Valeria Pittalà
Heme oxygenase-1 (HO-1) is the enzyme catalyzing the rate-limiting oxidative degradation of cellular heme into free iron, carbon monoxide (CO), and biliverdin, which is then rapidly converted into bilirubin. By means of these catabolic end-products and by removal of pro-oxidant heme, HO-1 exerts antioxidant, antiapoptotic, and immune-modulating effects, leading to overall cytoprotective and beneficial functions in mammalian cells. Therefore, HO-1 is considered a survival molecule in various stress-related conditions...
July 20, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28708313/human-biliverdin-reductase-regulates-the-molecular-mechanism-underlying-cancer-development
#20
Min Zhang, Wei Xin, Zhi Yi, Yue Li, Ying Liu, Hongyue Zhang, He Chen, Xinxin Chen, Shujie Tan, Daling Zhu
Human biliverdin reductase (hBVR), is an enzyme, that converts biliverdin to bilirubin, and has been implicated in epithelial-mesenchymal transition?EMT? in breast cancer. However, few studies have investigated the role of hBVR in cell apoptosis in other cancers. Therefore, the aim of this study was to investigate the effects of hBVR in several lines of cancer cells. The results of this study showed that hBVR expression was up-regulated in breast, lung, and liver cancers, but not ovarian cancer. Moreover, hBVR inhibition by small interfering RNA (si-hBVR) attenuated cell survival and increased caspase-3 protein expression, which was mediated by the ERK1/2 signaling pathway in relative cancer cells...
July 14, 2017: Journal of Cellular Biochemistry
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