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Trotter J, Onos L, McNaught C, Peter M, Gatt M, Maude K, MacFie J. The use of a novel adhesive tissue patch as an aid to anastomotic healing. Ann R Coll Surg Engl 2018; 100:230-234. [PMID: 29484939 PMCID: PMC5930107 DOI: 10.1308/rcsann.2018.0003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/16/2017] [Indexed: 11/22/2022] Open
Abstract
Introduction One of the most feared complications of colorectal surgery is anastomotic leak. Numerous techniques have been studied in the hope of decreasing leakage. This study was designed to assess the handling characteristics of a novel adhesive tissue patch (TissuePatch™; Tissuemed, Leeds, UK) applied to colorectal anastomoses in a pilot study. This was with a view to assessing its potential role in aiding anastomotic healing in subsequent trials. Methods A patch was applied to colorectal anastomoses after the surgeon had completed the anastomosis and prior to abdominal closure. Handling characteristics and patient outcomes were recorded prospectively. Results Nine patients were recruited before the study was prematurely terminated. In one patient, the patch fell off and in another patient, the surgeon omitted to apply it. Six patients had significant postoperative problems (1 confirmed leak necessitating return to theatre and excision anastomosis, 3 suspicious of leak on computed tomography delaying discharge, 2 perianastomotic collections). One patient had an uneventful recovery. Conclusions Although the handling characteristics of this novel tissue patch were deemed satisfactory, it appears that wrapping a colorectal anastomosis with an adhesive hydrophilic patch has significant deleterious effects on anastomotic healing. This could be a consequence of the creation of a microenvironment between the patch and the anastomosis that impairs healing. Further research is required to better understand the mechanisms involved. At present, the use of such patches on colorectal anastomoses should be discouraged outside the confines of a well monitored trial.
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Shaikh S, Forsyth J, Haslam J, Hicks G, Krishnan A, Ren K, Mitwalli A, Li D, Abbas K, Majeed T, Masudi T, Peter M, Bandyopadhyay D. Weekend and Out of Hours Surgical Handover (WOOSH): A Checklist Format Improves Efficiency and Patient Safety. Int J Surg 2017. [DOI: 10.1016/j.ijsu.2017.08.209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Katrib A, Logie V, Peter M, Wehrer P, Hilaire L, Maire G. XPS study of MoO2, WO2 and WO3 and their catalytic activities in the izomerization reactions of alkanes. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1997941923] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Janouskova H, El Tekle G, Udeshi N, Ulbricht A, Rinaldi A, Civenni G, Catapano C, Peter M, Carr S, Garraway L, Theurillat J. Opposing therapeutic efficacy of BET inhibitors is determined by cancer type-specific SPOP mutants. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32608-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Pichon X, Bastide A, Safieddine A, Chouaib R, Samacoits A, Basyuk E, Peter M, Mueller F, Bertrand E. Visualization of single endogenous polysomes reveals the dynamics of translation in live human cells. J Cell Biol 2016; 214:769-81. [PMID: 27597760 PMCID: PMC5021097 DOI: 10.1083/jcb.201605024] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 08/16/2016] [Indexed: 12/13/2022] Open
Abstract
Pichon et al. describe a method to visualize translation of single endogenous mRNPs in live cells and provide evidence for specialized translation factories, as well as measurements of translation elongation rate, ribosome loading, and movements of single polysomes. Translation is an essential step in gene expression. In this study, we used an improved SunTag system to label nascent proteins and image translation of single messenger ribonucleoproteins (mRNPs) in human cells. Using a dedicated reporter RNA, we observe that translation of single mRNPs stochastically turns on and off while they diffuse through the cytoplasm. We further measure a ribosome density of 1.3 per kilobase and an elongation rate of 13–18 amino acids per second. Tagging the endogenous POLR2A gene revealed similar elongation rates and ribosomal densities and that nearly all messenger RNAs (mRNAs) are engaged in translation. Remarkably, tagging of the heavy chain of dynein 1 (DYNC1H1) shows this mRNA accumulates in foci containing three to seven RNA molecules. These foci are translation sites and thus represent specialized translation factories. We also observe that DYNC1H1 polysomes are actively transported by motors, which may deliver the mature protein at appropriate cellular locations. The SunTag should be broadly applicable to study translational regulation in live single cells.
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Tsanov N, Samacoits A, Chouaib R, Traboulsi AM, Gostan T, Weber C, Zimmer C, Zibara K, Walter T, Peter M, Bertrand E, Mueller F. smiFISH and FISH-quant - a flexible single RNA detection approach with super-resolution capability. Nucleic Acids Res 2016; 44:e165. [PMID: 27599845 PMCID: PMC5159540 DOI: 10.1093/nar/gkw784] [Citation(s) in RCA: 208] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 08/26/2016] [Indexed: 11/12/2022] Open
Abstract
Single molecule FISH (smFISH) allows studying transcription and RNA localization by imaging individual mRNAs in single cells. We present smiFISH (single molecule inexpensive FISH), an easy to use and flexible RNA visualization and quantification approach that uses unlabelled primary probes and a fluorescently labelled secondary detector oligonucleotide. The gene-specific probes are unlabelled and can therefore be synthesized at low cost, thus allowing to use more probes per mRNA resulting in a substantial increase in detection efficiency. smiFISH is also flexible since differently labelled secondary detector probes can be used with the same primary probes. We demonstrate that this flexibility allows multicolor labelling without the need to synthesize new probe sets. We further demonstrate that the use of a specific acrydite detector oligonucleotide allows smiFISH to be combined with expansion microscopy, enabling the resolution of transcripts in 3D below the diffraction limit on a standard microscope. Lastly, we provide improved, fully automated software tools from probe-design to quantitative analysis of smFISH images. In short, we provide a complete workflow to obtain automatically counts of individual RNA molecules in single cells.
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Lasithiotakis K, Peter M, Andreou A, Zoras O. 111. Isolated limb perfusion versus isolated limb infusion: A systematic review of outcomes and morbidity. Eur J Surg Oncol 2016. [DOI: 10.1016/j.ejso.2016.06.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Loukil A, Cheung CT, Bendris N, Lemmers B, Peter M, Blanchard JM. Cyclin A2: At the crossroads of cell cycle and cell invasion. World J Biol Chem 2015; 6:346-50. [PMID: 26629317 PMCID: PMC4657123 DOI: 10.4331/wjbc.v6.i4.346] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 09/18/2015] [Accepted: 10/12/2015] [Indexed: 02/05/2023] Open
Abstract
Cyclin A2 is an essential regulator of the cell division cycle through the activation of kinases that participate to the regulation of S phase as well as the mitotic entry. However, whereas its degradation by the proteasome in mid mitosis was thought to be essential for mitosis to proceed, recent observations show that a small fraction of cyclin A2 persists beyond metaphase and is degraded by autophagy. Its implication in the control of cytoskeletal dynamics and cell movement has unveiled its role in the modulation of RhoA activity. Since this GTPase is involved in both cell rounding early in mitosis and later, in the formation of the cleavage furrow, this suggests that cyclin A2 is a novel actor in cytokinesis. Taken together, these data point to this cyclin as a potential mediator of cell-niche interactions whose dysregulation could be taken as a hallmark of metastasis.
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Bendris N, Loukil A, Cheung C, Arsic N, Rebouissou C, Hipskind R, Peter M, Lemmers B, Blanchard JM. Cyclin A2: a genuine cell cycle regulator? Biomol Concepts 2014; 3:535-43. [PMID: 25436557 DOI: 10.1515/bmc-2012-0027] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Accepted: 07/26/2012] [Indexed: 01/13/2023] Open
Abstract
Abstract Cyclin A2 belongs to the core cell cycle regulators and participates in the control of both S phase and mitosis. However, several observations suggest that it is also endowed with other functions, and our recent data shed light on its involvement in cytoskeleton dynamic and cell motility. From the transcription of its gene to its posttranslational modifications, cyclin A2 regulation reveals the complexity of the regulatory network shaping cell cycle progression. We summarize our current knowledge on this cell cycle regulator and discuss recent findings raising the possibility that cyclin A2 might play a much broader role in epithelial tissues homeostasis.
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Loukil A, Zonca M, Rebouissou C, Baldin V, Coux O, Biard-Piechaczyk M, Blanchard JM, Peter M. High-resolution live-cell imaging reveals novel cyclin A2 degradation foci involving autophagy. J Cell Sci 2014; 127:2145-50. [PMID: 24634511 DOI: 10.1242/jcs.139188] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Cyclin A2 is a key player in the regulation of the cell cycle. Its degradation in mid-mitosis relies on the ubiquitin-proteasome system (UPS). Using high-resolution microscopic imaging, we find that cyclin A2 persists beyond metaphase. Indeed, we identify a novel cyclin-A2-containing compartment that forms dynamic foci. Förster (or fluorescence) resonance energy transfer (FRET) and fluorescence lifetime imaging microscopy (FLIM) analyses show that cyclin A2 ubiquitylation takes place predominantly in these foci before spreading throughout the cell. Moreover, inhibition of autophagy in proliferating cells induces the stabilisation of a subset of cyclin A2, whereas induction of autophagy accelerates the degradation of cyclin A2, thus showing that autophagy is a novel regulator of cyclin A2 degradation.
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Thomas Y, Peter M, Mechali F, Blanchard JM, Coux O, Baldin V. Kizuna is a novel mitotic substrate for CDC25B phosphatase. Cell Cycle 2014; 13:3867-77. [PMID: 25558830 PMCID: PMC4615109 DOI: 10.4161/15384101.2014.972882] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 09/26/2014] [Accepted: 09/30/2014] [Indexed: 11/29/2022] Open
Abstract
CDC25 dual-specificity phosphatases play a central role in cell cycle control through the activation of Cyclin-Dependent Kinases (CDKs). Expression during mitosis of a stabilized CDC25B mutant (CDC25B-DDA), which cannot interact with the F-box protein βTrCP for proteasome-dependent degradation, causes mitotic defects and chromosome segregation errors in mammalian cells. We found, using the same CDC25B mutant, that stabilization and failure to degrade CDC25B during mitosis lead to the appearance of multipolar spindle cells resulting from a fragmentation of pericentriolar material (PCM) and abolish mitotic Plk1-dependent phosphorylation of Kizuna (Kiz), which is essential for the function of Kiz in maintaining spindle pole integrity. Thus, in mitosis Kiz is a new substrate of CDC25B whose dephosphorylation following CDC25B stabilization leads to the formation of multipolar spindles. Furthermore, endogenous Kiz and CDC25B interact only in mitosis, suggesting that Kiz phosphorylation depends on a balance between CDC25B and Plk1 activities. Our data identify a novel mitotic substrate of CDC25B phosphatase that plays a key role in mitosis control.
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Uroz S, Courty PE, Pierrat JC, Peter M, Buée M, Turpault MP, Garbaye J, Frey-Klett P. Functional profiling and distribution of the forest soil bacterial communities along the soil mycorrhizosphere continuum. MICROBIAL ECOLOGY 2013; 66:404-15. [PMID: 23455431 DOI: 10.1007/s00248-013-0199-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Accepted: 02/08/2013] [Indexed: 05/09/2023]
Abstract
An ectomycorrhiza is a multitrophic association between a tree root, an ectomycorrhizal fungus, free-living fungi and the associated bacterial communities. Enzymatic activities of ectomycorrhizal root tips are therefore result of the contribution from different partners of the symbiotic organ. However, the functional potential of the fungus-associated bacterial communities remains unknown. In this study, a collection of 80 bacterial strains randomly selected and isolated from a soil-ectomycorrhiza continuum (oak-Scleroderma citrinum ectomycorrhizas, the ectomycorrhizosphere and the surrounding bulk soil) were characterized. All the bacterial isolates were identified by partial 16S rRNA gene sequences as members of the genera Burkholderia, Collimonas, Dyella, Mesorhizobium, Pseudomonas, Rhizobium and Sphingomonas. The bacterial strains were then assayed for β-xylosidase, β-glucosidase, N-acetyl-hexosaminidase, β-glucuronidase, cellobiohydrolase, phosphomonoesterase, leucine-aminopeptidase and laccase activities, chitin solubilization and auxin production. Using these bioassays, we demonstrated significant differences in the functional distribution of the bacterial communities living in the different compartments of the soil-ectomycorrhiza continuum. The surrounding bulk soil was significantly enriched in bacterial isolates capable of hydrolysing cellobiose and N-acetylglucosamine. In contrast, the ectomycorrhizosphere appeared significantly enriched in bacterial isolates capable of hydrolysing glucopyranoside and chitin. Notably, chitinase and laccase activities were found only in bacterial isolates belonging to the Collimonas and Pseudomonas genera. Overall, the results suggest that the ectomycorrhizal fungi favour specific bacterial communities with contrasting functional characteristics from the surrounding soil.
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Fujii T, Suzuki S, Shinozaki M, Tanaka H, Bell S, Cooper S, Lomonte C, Libutti P, Chimienti D, Casucci F, Bruno A, Antonelli M, Lisi P, Cocola L, Basile C, Negri A, Del Valle E, Zanchetta M, Zanchetta J, Di Vico MC, Ferraresi M, Pia A, Aroasio E, Gonella S, Mongilardi E, Clari R, Moro I, Piccoli GB, Gonzalez-Parra E, Rodriguez-Osorio L, Ortiz-Arduan A, de la Piedra C, Egido J, Perez Gomez MV, Tabikh AA, Afsar B, Kirkpantur A, Imanishi Y, Yamagata M, Nagata Y, Ohara M, Michigami T, Yukimura T, Inaba M, Bieber B, Robinson B, Mariani L, Jacobson S, Frimat L, Bommer J, Pisoni R, Tentori F, Ciceri P, Elli F, Brancaccio D, Cozzolino M, Adamczak M, Wiecek A, Kuczera P, Sezer S, Bal Z, Tutal E, Kal O, Yavuz D, Y ld r m I, Sayin B, Ozelsancak R, Ozkurt S, Turk S, Ozdemir N, Lehmann R, Roesel M, Fritz P, Braun N, Ulmer C, Steurer W, Dagmar B, Ott G, Dippon J, Alscher D, Kimmel M, Latus J, Turkvatan A, Balci M, Mandiroglu S, Seloglu B, Alkis M, Serin M, Calik Y, Erkula S, Gorboz H, Afsar B, Mandiroglu F, Kirkpantur A, Lindley E, Cruz Casal M, Rogers S, Pancirova J, Kernc J, Copley JB, Fouque D, Kiss I, Kiss Z, Szabo A, Szegedi J, Balla J, Ladanyi E, Csiky B, orkossy O, Torok M, Turi S, Ambrus C, Deak G, Tisler A, Kulcsar I, K d r V, Altuntas A, Akp nar A, Orhan H, Sezer M, Filiopoulos V, Manolios N, Arvanitis D, Pani I, Panagiotopoulos K, Vlassopoulos D, Rodriguez-Ortiz ME, Canalejo A, Herencia C, Martinez-Moreno JM, Peralta-Ramirez A, Perez-Martinez P, Navarro-Gonzalez JF, Rodriguez M, Peter M, Gundlach K, Steppan S, Passlick-Deetjen J, Munoz-Castaneda JR, Almaden Y, Munoz-Castaneda JR, Peralta-Ramirez A, Rodriguez-Ortiz M, Herencia C, Martinez-Moreno J, Lopez I, Aguilera-Tejero E, Peter M, Gundlach K, Steppan S, Passlick-Deetjen J, Rodriguez M, Almaden Y, Hanafusa N, Masakane I, Ito S, Nakai S, Maeda K, Suzuki H, Tsunoda M, Ikee R, Sasaki N, Sato M, Hashimoto N, Wang MH, Hung KY, Chiang CK, Huang JW, Lu KC, Lang CL, Okano K, Yamashita T, Tsuruta Y, Hibi A, Miwa N, Kimata N, Tsuchiya K, Nitta K, Akiba T, Sasaki N, Tsunoda M, Ikee R, Sato M, Hashimoto N, Harb L, Komaba H, Kakuta T, Suzuki H, Suga T, Fukagawa M, Kikuchi H, Shimada H, Karasawa R, Suzuki M, Zhelyazkova-Savova M, Gerova D, Paskalev D, Ikonomov V, Zortcheva R, Galunska B, Jean G, Deleaval P, Hurot JM, Lorriaux C, Mayor B, Chazot C, Vannucchi H, Vannucchi MT, Martins JC, Merino JL, Teruel JL, Fernandez-Lucas M, Villafruela JJ, Bueno B, Gomis A, Paraiso V, Quereda C, Ibrahim FH, Fadhlina NZ, Ng EK, Thong KM, Goh BL, Sulaiman DM, Fatimah DAN, Evi DO, Siti SR, Wilson RJ, Keith M, Copley JB, Gros B, Galan A, Gonzalez-Parra E, Herrero JA, Oyaguez I, Keith M, Casado MA, Lucisano S, Coppolino G, Villari A, Cernaro V, Lupica R, Trimboli D, Aloisi C, Buemi M. CKD-MBD II. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Gelev S, Toshev S, Trajceska L, Pavleska S, Selim G, Dzekova P, Shikole A, Gelev S, Toshev S, Trajceska L, Pavleska S, Selim G, Dzekova P, Shikole A, Ulu SM, Yilmaz F, Ahsen A, Akci A, Yuksel S, Mihaescu A, Olariu N, Avram C, Schiller O, Schiller A, Xiao DM, Niu JY, Gu Y, Drechsler C, van den Broek H, Vervloet M, Hoekstra T, Dekker F, Ketteler M, Brandenburg V, Turkvatan A, Kirkpantur A, Mandiroglu S, Afsar B, Seloglu B, Alkis M, Erkula S, GURBUZ H, Serin M, CALIK Y, Mandiroglu F, Balci M, Choi BS, Choi SR, Park HS, Hong YA, Chung BH, Kim YS, Yang CW, Kim YS, Park CW, Jung JY, Sung JY, Kim AJ, Kim HS, Lee C, Ro H, Chang JH, Lee HH, Chung W, Sezer S, Bal Z, Tutal E, Bal U, Erkmen Uyar M, Ozdemir Acar N, Karakas Y, Sahin G, Urfali F, Bal C, Akcar Degirmenci N, Sirmagul B, Janda K, Krzanowski M, Dumnicka P, Kusnierz-Cabala B, Sulowicz W, Balci M, Kirkpantur A, Mandiroglu S, Afsar B, Seloglu B, Alkis M, Serin M, CALIK Y, Erkula S, GURBUZ H, Mandiroglu F, Turkvatan A, Valtuille RA, Gonzalez MS, Casos ME, Yoshida T, Yamashita M, Hayashi M, Raikou VD, Tentolouris N, Makropoulos I, Kaisidis P, Boletis JN, Abdalla AA, Roche D, Forbes JF, Hannigan A, Hegarty A, Cronin CJ, Casserly LF, Stack AG, Guinsburg A, Raimann JG, Usvyat L, Kooman J, Marelli C, Etter M, Marcelli D, Levin NW, Kotanko P, Kim CS, Choi JS, Bae EH, Ma SK, Kim SW, Ryu JH, Lee S, Ryu DR, Kim SJ, Kang DH, Choi KB, Shoji T, Tsuchikura S, Shimomura N, Kakiya R, Tsujimoto Y, Tabata T, Emoto M, Nishizawa Y, Inaba M, Selim G, Stojceva-Taneva O, Tozija L, Georgievska-Ismail L, Gelev S, Dzekova-Vidimliski P, Trajceska L, Petronievic Z, Sikole A, Wu CJ, Pan CF, Chen HH, Lin CJ, Kim Y, Kim JK, Song YR, Kim SG, Kim HJ, Kuwahara M, Bannai K, Kikuchi K, Yamato H, Segawa H, Miyamoto KI, De Mauri A, Chiarinotti D, Ruva CE, David P, Capurro F, De Leo M, Han JH, Kim HR, Ko KI, Kim CH, Koo HM, Doh FM, Lee MJ, Oh HJ, Han SH, Yoo TH, Choi KH, Kang SW, Shibata K, Sohara H, Kuji T, Kawata S, Kogudhi N, Nishihara M, Satta H, Jung JY, Ro H, Lee C, Kim SM, Kim AJ, Kim HS, Chang JH, Lee HH, Chung W, Kramann R, Erpenbeck J, Becker M, Brandenburg V, Kruger T, Marx N, Floege J, Schlieper G, Power A, Fogarty D, Wheeler D, Kerschbaum J, Schwarz CP, Mayer G, Prajitno CW, Matsuzawa R, Matsunaga A, Ishii A, Abe Y, Yoneki K, Harada M, Takagi Y, Yoshida A, Takahira N, Sirch J, Pfeiffer S, Fischlein T, El-Nahid MS, Issac MS, Bal Z, Tutal E, Bal U, Erkmen Uyar M, Guliyev O, Sayin B, Sezer S, Bajari T, Hermann M, Gmeiner B, Regele H, Aumayr K, Gensberger ET, Scharrer S, Sengoge G, Novo A, Tania S, Anes E, Domingues A, Mendes E, Batista G, Viana J, Rroji M, Cafka M, Seferi S, Seiti J, Petrela E, Likaj E, Thereska N, Selim G, Stojceva-Taneva O, Tozija L, Georgievska-Ismail L, Gelev S, Dzekova-Vidimliski P, Trajceska L, Petronievic Z, Sikole A, Turkmen K, Ozcicek F, Erdur F, Turk S, Yeksan M, Tonbul H, Castellano S, Palomares I, Merello JI, Mandiroglu S, Torkvatan A, Balci M, Seloglu B, Alkis M, Serin M, Erkula S, Gurbuz H, Calik Y, Afsar B, Mandiroglu F, Kirkpantur A, Ulusal Okyay G, Okyay K, Polattas Solak E, Sahinaslan A, Pasaoglu O, Ayerden Ebinc F, Boztepe Derici U, Sindel S, Arinsoy T, Lee YK, Son SY, Choi MJ, Lee SM, Yoon JW, Koo JR, Noh JW, Vaziri ND, Matias P, Amaral T, Ferreira AC, Mendes M, Azevedo A, Jorge C, Aires I, Gil C, Ferreira A, Carretero Dios D, Merello Godino JI, Moran Risco JE, Castellano Gasch S, Schwermer K, Hoppe K, Klysz P, Radziszewska D, Sikorska D, Nealis J, Polcyn-Adamczak M, Zaremba-Drobnik D, Pawlaczyk K, Oko A, Mentese A, Yavuz A, Karahan C, Sumer A, Ozkan G, Ulusoy S, Yildiz G, Duman A, Aydin H, Yilmaz A, Hur E, Magden K, Cetin G, Candan F, Franczyk-Skora B, Gluba A, Kowalczyk M, Banach M, Rysz J, Novo A, Domingues A, Preto L, Sousa T, Mendes E, Batista G, Vaz J, Oue M, Kuragano T, Hamahata S, Fukao W, Toyoda K, Nakanishi T, Otsubo S, Tsuchiya K, Akiba T, Nitta K, Afsar B, Saglam M, Yuceturk C, Agca E, Tosic J, Djuric Z, Popovic J, Buzadzic I, Djuric P, Jankovic A, Dimkovic N, Simone S, Dell'Oglio MP, Ciccone M, Castellano G, Corciulo R, Balestra C, Giangrande M, Gigante M, Grandaliano G, Gesualdo L, Pertosa GP, Mohamed EA, Marouane B, Mohamed Reda EF, Aziz R, Hicham B, Youssef B, Abdennasser EK, Salaheddine T, Mohammed A, Hwang JC, Jiang MY, Lu YH, Wang CT, Grzegorzewska A, Cieszynski K, Niepolski L, Sowinska A, Abdallah E, Al-Helal B, Waked E, Abdel-Khalik A, Nabil M, El-Shanawany F, Tekce H, Kursat S, Bahadir Colak H, Aktas G, Ozcicek A, Turkmen K, Ozcicek F, Akbas E, Demirtas L, Ozbicer A, Cetinkay R, Capoglu I, Valocikova I, Valocik G, Vachalcova M, Kolesarova E, Nowak A, Friedrich B, Artunc F, Serra A, Breidthardt T, Twerenbold R, Peter M, Potocki M, Muller C. Cardiovascular complications in CKD 5D. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Herzog C, Peter M, Pritsch K, Günthardt-Goerg MS, Egli S. Drought and air warming affects abundance and exoenzyme profiles of Cenococcum geophilum associated with Quercus robur, Q. petraea and Q. pubescens. PLANT BIOLOGY (STUTTGART, GERMANY) 2013; 15 Suppl 1:230-237. [PMID: 22686410 DOI: 10.1111/j.1438-8677.2012.00614.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The present study aimed to elucidate the influence of drought and elevated temperature on relative abundance and functioning of the ectomycorrhizal fungus Cenococcum geophilum on three oak species differing in adaptation to a warm and dry climate. The experiment QUERCO comprised three Quercus species (Q. robur, Q. petraea, Q. pubescens) grown for 3 years under four treatments: elevated air temperature, drought, a combination of the two, and control. Fine root samples were analysed for relative abundance and potential extracellular enzyme activities of ectomycorrhizae of C. geophilum, a fungal species known to be drought resistant. The relative abundance of C. geophilum on the roots of the oak species was significantly increased by temperature, decreased by drought, but unchanged in the combined treatment compared to the control. Although the extent of treatment effects differed among oak species, no significant influence of tree species on relative abundance of C. geophilum was detected. Exoenzyme activities of C. geophilum on Q. robur and Q. petraea (but not Q. pubescens) significantly increased in the combined treatment, but for all oak species were reduced under drought and air warming alone compared to the control. There was a significant negative correlation between abundance of C. geophilum and its leucine aminopeptidase activity. As this enzyme is not frequent among ectomycorrhizal fungi, this emphasises the functional importance of C. geophilum in the ectomycorrhizal community. Our results indicate that increased temperature and drought will influence the relative abundance and enzyme activity of C. geophilum. However, both the Quercus species and C. geophilum tolerated warming and strong drought.
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Xu C, Peter M, Bouquier N, Ollendorff V, Villamil I, Liu J, Fagni L, Perroy J. REV, A BRET-Based Sensor of ERK Activity. Front Endocrinol (Lausanne) 2013; 4:95. [PMID: 23908646 PMCID: PMC3727045 DOI: 10.3389/fendo.2013.00095] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 07/17/2013] [Indexed: 11/13/2022] Open
Abstract
Networks of signaling molecules are activated in response to environmental changes. How are these signaling networks dynamically integrated in space and time to process particular information? To tackle this issue, biosensors of single signaling pathways have been engineered. Bioluminescence resonance energy transfer (BRET)-based biosensors have proven to be particularly efficient in that matter due to the high sensitivity of this technology to monitor protein-protein interactions or conformational changes in living cells. Extracellular signal-regulated kinases (ERK) are ubiquitously expressed and involved in many diverse cellular functions that might be encoded by the strength and spatio-temporal pattern of ERK activation. We developed a BRET-based sensor of ERK activity, called Rluc8-ERKsubstrate-Venus (REV). As expected, BRET changes of REV were correlated with ERK phosphorylation, which is required for its kinase activity. In neurons, the nature of the stimuli determines the strength, the location, or the moment of ERK activation, thus highlighting how acute modulation of ERK may encode the nature of initial stimulus to specify the consequences of this activation. This study provides evidence for suitability of REV as a new biosensor to address biological questions.
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Block G, Bell* G, Pickthorn K, Huang S, Martin K, Tentori F, Bieber B, Morgenstern H, Jacobson S, Andreucci V, Fukagawa M, Mendelssohn D, Pisoni R, Robinson B, De Schutter T, Neven E, Behets G, Peter M, Steppan S, Passlick-Deetjen J, D'haese P, Senatore F, Manning A, Nakajima S, Ushirogawa Y, Tsuda K, Egawa H, Lucisano G, Seiler S, Ege P, Romero de Vorsmann F, Klingele M, Lerner-Graber AK, Fliser D, Heine GH, Molony D, Bellasi A, Bellizzi V, Russo D, DI Iorio B. Bone and mineral diseases - 2. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Arsic N, Bendris N, Peter M, Begon-Pescia C, Rebouissou C, Gadéa G, Bouquier N, Bibeau F, Lemmers B, Blanchard JM. A novel function for Cyclin A2: control of cell invasion via RhoA signaling. ACTA ACUST UNITED AC 2012; 196:147-62. [PMID: 22232705 PMCID: PMC3255987 DOI: 10.1083/jcb.201102085] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Cyclin A2 plays a key role in cell cycle regulation. It is essential in embryonic cells and in the hematopoietic lineage yet dispensable in fibroblasts. In this paper, we demonstrate that Cyclin A2-depleted cells display a cortical distribution of actin filaments and increased migration. These defects are rescued by restoration of wild-type Cyclin A2, which directly interacts with RhoA, or by a Cyclin A2 mutant unable to associate with Cdk. In vitro, Cyclin A2 potentiates the exchange activity of a RhoA-specific guanine nucleotide exchange factor. Consistent with this, Cyclin A2 depletion enhances migration of fibroblasts and invasiveness of transformed cells via down-regulation of RhoA activity. Moreover, Cyclin A2 expression is lower in metastases relative to primary colon adenocarcinoma in matched human tumors. All together, these data show that Cyclin A2 negatively controls cell motility by promoting RhoA activation, thus demonstrating a novel Cyclin A2 function in cytoskeletal rearrangements and cell migration.
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Peter M, Scheuch H, Burkard TR, Tinter J, Wernle T, Rumpel S. Induction of immediate early genes in the mouse auditory cortex after auditory cued fear conditioning to complex sounds. GENES BRAIN AND BEHAVIOR 2012; 11:314-24. [PMID: 22212853 DOI: 10.1111/j.1601-183x.2011.00761.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Immediate early genes (IEGs) are widely used as markers to delineate neuronal circuits because they show fast and transient expression induced by various behavioral paradigms. In this study, we investigated the expression of the IEGs c-fos and Arc in the auditory cortex of the mouse after auditory cued fear conditioning using quantitative polymerase chain reaction and microarray analysis. To test for the specificity of the IEG induction, we included several control groups that allowed us to test for factors other than associative learning to sounds that could lead to an induction of IEGs. We found that both c-fos and Arc showed strong and robust induction after auditory fear conditioning. However, we also observed increased expression of both genes in any control paradigm that involved shocks, even when no sounds were presented. Using mRNA microarrays and comparing the effect of the various behavioral paradigms on mRNA expression levels, we did not find genes being selectively upregulated in the auditory fear conditioned group. In summary, our results indicate that the use of IEGs to identify neuronal circuits involved specifically in processing of sound cues in the fear conditioning paradigm can be limited by the effects of the aversive unconditional stimulus and that activity levels in a particular primary sensory cortical area can be strongly influenced by stimuli mediated by other modalities.
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Peter M, Fendt J, Pleintinger S, Hinrichsen O. On the interaction of carbon monoxide with ternary Cu/ZnO/Al2O3 catalysts: modeling of dynamic morphological changes and the influence on elementary step kinetics. Catal Sci Technol 2012. [DOI: 10.1039/c2cy20189e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bouttier M, Saumet A, Peter M, Courgnaud V, Schmidt U, Cazevieille C, Bertrand E, Lecellier CH. Retroviral GAG proteins recruit AGO2 on viral RNAs without affecting RNA accumulation and translation. Nucleic Acids Res 2011; 40:775-86. [PMID: 21948796 PMCID: PMC3258151 DOI: 10.1093/nar/gkr762] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Cellular micro(mi)RNAs are able to recognize viral RNAs through imperfect micro-homologies. Similar to the miRNA-mediated repression of cellular translation, this recognition is thought to tether the RNAi machinery, in particular Argonaute 2 (AGO2) on viral messengers and eventually to modulate virus replication. Here, we unveil another pathway by which AGO2 can interact with retroviral mRNAs. We show that AGO2 interacts with the retroviral Group Specific Antigen (GAG) core proteins and preferentially binds unspliced RNAs through the RNA packaging sequences without affecting RNA stability or eliciting translation repression. Using RNAi experiments, we provide evidences that these interactions, observed with both the human immunodeficiency virus 1 (HIV-1) and the primate foamy virus 1 (PFV-1), are required for retroviral replication. Taken together, our results place AGO2 at the core of the retroviral life cycle and reveal original AGO2 functions that are not related to miRNAs and translation repression.
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Paden R, Pavlicek W, Peter M, Boltz T. SU-E-I-74: Modality SR: Using the DICOM Radiation Dose Structured Report. Med Phys 2011. [DOI: 10.1118/1.3611647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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McCabe K, Shobeiri N, Beseau D, Adams M, Holden R, Shobeiri N, Adams M, Holden R, Maio T, McCabe K, Laverty K, Beseau D, Pang J, Jozefacki A, Shobeiri N, Holden R, Adams M, Salem S, Jankowski V, Passlick-Deetjen J, Peter M, Zidek W, Jankowski J, Riser B, Barreto F, Valaitis P, Cook C, White J, Drueke T, Holmes C, Massy Z, Mizobuchi M, Ogata H, Kumata C, Nakazawa A, Koiwa F, Kinugasa E, Akizawa T, Lopez I, Aguilera-Tejero E, Guerrero F, Pineda C, Raya AI, Peralta A, Rodriguez M, Ciceri P, Volpi E, Brenna I, Brancaccio D, Cozzolino M, Bozic M, deRoij J, Parisi E, Ruiz-Ortega M, Fernandez E, Valdivielso JM, Lee CT, Ng HY, Tsai YC, Yang YK, Niwa T, Adijiang A, Shimizu H, Nishijima F, Okamoto T, Kamata K, Naito S, Aoyama T, Tazaki H, Yamanaka N, Koenigshausen E, Ohlsson S, Woznowski M, Quack I, Potthoff SA, Rump LC, Sellin L, Maquigussa E, Pereira L, Arnoni C, Boim M, Lee KW, Jeong JY, Jang WI, Chung S, Choi DE, Na KR, Shin YT, Slabiak-Blaz N, Adamczak M, Ritz E, Wiecek A, Uz E, Uz B, Sahin Balcik O, Kaya A, Akdeniz D, Bavbek Ruzgaresen N, Uz E, Turgut FH, Bayrak R, Carlioglu A, Akcay A, Galichon P, Vittoz N, Cornaire E, Baugey E, Vandermeersch S, Verpont MC, Mesnard L, Xu-Dubois YC, Hertig A, Rondeau E, Kokeny G, Fekeshazy O, Fang L, Rosivall L, Mozes MM, Duggan K, Hodge G, Ha H, Chen J, Lee L, Tay C, Macdonald G, Wang PHM, Tamouza H, Chemouny J, Monsinjon E, Tiwari M, Vende F, Vrtovsnik F, Camara NO, Benhamou M, Monteiro RC, Moura IC, Rigothier C, Saleem M, Ripoche J, Mathieson P, Combe C, Welsh G, Duwel A, Munoz-Felix JM, Lopez-Novoa JM, Martinez-Salgado C, Koutroutsos K, Kassimatis T, Nomikos A, Giannopoulou I, Papadakis J, Nakopoulou L, Nakamichi T, Mori T, Sato T, Sato H, Ito S, Neudecker S, Heilmann M, Kramer P, Wolf I, Sticht C, Schock-Kusch D, Gubhaju L, Kriz W, Bertram JF, Schad LR, Gretz N, Munoz-Felix JM, Fuentes-Calvo I, Lopez-Novoa JM, Martinez-Salgado C, Kimura T, Takabatake Y, Takahashi A, Kaimori JY, Matsui I, Namba T, Kitamura H, Niimura F, Matsusaka T, Soga T, Rakugi H, Isaka Y, Shin SJ, Kim KS, Kim WK, Rampanelli E, Teske G, Leemans J, Florquin S, Small D, Bennett N, Roy S, Gobe G, Blazquez-Medela AM, Garcia-Sanchez O, Lopez-Hernandez FJ, Lopez-Novoa JM, Martinez-Salgado C, Deibel A, Cheng J, Warner G, Knudsen B, Gray C, Lien K, Juskewitch J, Grande J, Wang N, Wang X, Zeng M, Sun B, Xing C, Zhao X, Xiong M, Yang J, Cao K, Priante G, Musacchio E, Sartori L, Valvason C, Baggio B, Pitlovanciv EDON, Reis LA, Pessoa EA, Teixeira L, Borges FT, Simoes MJ, Schor N, Munoz-Felix JM, Duwel A, Lopez-Novoa JM, Martinez-Salgado C, Doustar Y, Mohajeri D, Smirnov AV, Kucher AG, Ivanova GT, Berseneva ON, Parastaeva MM, Zarajsky MI, Saburova IJ, Kaukov IG, Koppe L, Fouque D, Dugenet Y, Soulage C, Wan J, Yang X, Cui J, Zou Z. Experimental pathology. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kurmann A, Peter M, Tschan F, Mühlemann K, Candinas D, Beldi G. Adverse effect of noise in the operating theatre on surgical-site infection. Br J Surg 2011; 98:1021-5. [DOI: 10.1002/bjs.7496] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Abstract
Background
The aim of this pilot study was to evaluate the noise level in an operating theatre as a possible surrogate marker for intraoperative behaviour, and to detect any correlation between sound level and subsequent surgical-site infection (SSI).
Methods
The sound level was measured during 35 elective open abdominal procedures. The noise intensity was registered digitally in decibels (dB) every second. A standard questionnaire was used to evaluate the behaviour of the surgical team during the operation. The primary outcome parameter was the SSI rate within 30 days of surgery.
Results
The overall rate of SSI was six of 35 (17 per cent). Demographic parameters and duration of operation were not significantly different between patients with, or without SSI. The median sound level (43·5 (range 26·0–60·0) versus 25·0 (25·0–60·0) dB; P = 0·040) and median level above baseline (10·7 (0·6–33·3) versus 0·6 (0·5–10·8); P = 0·001) were significantly higher for patients who developed a SSI. The sound level was at least 4 dB above the median in 22·5 per cent of the peaks in patients with SSI compared with 10·7 per cent in those without (P = 0·029). Talking about non-surgery-related topics was associated with a significantly higher sound level (P = 0·024).
Conclusion
Intraoperative noise volume was associated with SSI. This may be due to a lack of concentration, or a stressful environment, and may therefore represent a surrogate parameter by which to assess the behaviour of a surgical team.
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Pelet S, Rudolf F, Nadal-Ribelles M, de Nadal E, Posas F, Peter M. Transient Activation of the HOG MAPK Pathway Regulates Bimodal Gene Expression. Science 2011; 332:732-5. [DOI: 10.1126/science.1198851] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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