MicroRNA-661 modulates redox and metabolic homeostasis in colon cancer

Cancer cell survival and metastasis are dependent on metabolic reprogramming that is capable of increasing resistance to oxidative and energetic stress. Targeting these two processes can be crucial for cancer progression. Herein, we describe the role of microRNA-661 (miR661) as epigenetic regulator of colon cancer (CC) cell metabolism. MicroR661 induces a global increase in reactive oxygen species, specifically in mitochondrial superoxide anions, which appears to be mediated by decreased carbohydrate metabolism and pentose phosphate pathway, and by a higher dependency on mitochondrial respiration. MicroR661 overexpression in non-metastatic human CC cells induces an epithelial-to-mesenchymal transition phenotype, and a reduced tolerance to metabolic stress. This seems to be a general effect of miR661 in CC, since metastatic CC cell metabolism is also compromised upon miR661 overexpression. We propose hexose-6-phosphate dehydrogenase and pyruvate kinase M2 as two key players related to the observed metabolic reprogramming. Finally, the clinical relevance of miR661 expression levels in stage-II and III CC patients is discussed. In conclusion, we propose miR661 as a potential modulator of redox and metabolic homeostasis in CC.This work was supported by Ministerio de Econom ıa y Competitividad del Gobierno de España (MINECO/FEDER Plan Nacional I+D+i AGL201348943-C2 and AGL2016-76736-C3-3-R), Gobierno regional de la Comunidad de Madrid (P2013/ABI2728, ALIBIRD-CM) and EU Structural Funds.S

La Ilustración hispánica. Mestiza y universal

Catálogo de la exposición celebrada en la AECID (Madrid) de septiembre de 2017 a febrero de 2018Antecedentes y precursores de la Ilustración hispánica / Fermín del Pino -- La Escuela Universalista Hispánica o Española del siglo XVIII / Pedro Aullón de Haro -- El Galeón de Manila en la historia de la globalización / Davide Mombelli -- El Pacífico, Filipinas y los Mares del sur / Francisco G. Villanueva -- Expediciones de límites geográficos en América durante la segunda mitad del siglo XVIII / Carmen Martínez Martín -- Andrés, Hervás y la filología universal / Jesús García Gabaldón -- La Ilustración en Filipinas / Isaac Donoso -- La colaboración europea en materia científica. El período ilustrado / Fernando Miguel Pérez Herranz -- La salud como objetivo, la Real Expedición Filantrópica de la Vacuna : textos y contextos / Susana María Ramírez Martín -- El método del viaje / Joaquín Ibáñez Montoya -- La investigación basada en fuentes bibliográficas / Araceli Garcí

SIRT1 contributes to telomere maintenance and augments global homologous recombination

SIRT1 is a positive regulator of telomere length and attenuates age-associated telomere shortening

Monitoring of chicken meat freshness by means of a colorimetric sensor array

A new optoelectronic nose to monitor chicken meat ageing has been developed. It is based on 16 pigments prepared by the incorporation of different dyes (pH indicators, Lewis acids, hydrogenbonding derivatives, selective probes and natural dyes) into inorganic materials (UVM-7, silica and alumina). The colour changes of the sensor array were characteristic of chicken ageing in a modi¿ed packaging atmosphere (30% CO2¿70% N2). The chromogenic array data were processed with qualitative (PCA) and quantitative (PLS) tools. The PCA statistical analysis showed a high degree of dispersion, with nine dimensions required to explain 95% of variance. Despite this high dimensionality, a tridimensional representation of the three principal components was able to differentiate ageing with 2-day intervals. Moreover, the PLS statistical analysis allows the creation of a model to correlate the chromogenic data with chicken meat ageing. The model offers a PLS prediction model for ageing with values of 0.9937, 0.0389 and 0.994 for the slope, the intercept and the regression coef¿cient, respectively, and is in agreement with the perfect ¿t between the predicted and measured values observed. The results suggest the feasibility of this system to help develop optoelectronic noses that monitor food freshness.Salinas Soler, Y.; Ros-Lis, JV.; Vivancos, J.; Martínez Mañez, R.; Marcos Martínez, MD.; Aucejo Romero, S.; Herranz, N.... (2012). Monitoring of chicken meat freshness by means of a colorimetric sensor array. Analyst. 137(16):3635-3643. doi:10.1039/C2AN35211GS3635364313716Anang, D. M., Rusul, G., Ling, F. H., & Bhat, R. (2010). Inhibitory effects of lactic acid and lauricidin on spoilage organisms of chicken breast during storage at chilled temperature. International Journal of Food Microbiology, 144(1), 152-159. doi:10.1016/j.ijfoodmicro.2010.09.014HINTON, A., & INGRAM, K. D. (2005). Microbicidal Activity of Tripotassium Phosphate and Fatty Acids toward Spoilage and Pathogenic Bacteria Associated with Poultry. Journal of Food Protection, 68(7), 1462-1466. doi:10.4315/0362-028x-68.7.1462Jeremiah, L. . (2001). Packaging alternatives to deliver fresh meats using short- or long-term distribution. Food Research International, 34(9), 749-772. doi:10.1016/s0963-9969(01)00096-5Ellis, D. I., & Goodacre, R. (2001). Rapid and quantitative detection of the microbial spoilage of muscle foods: current status and future trends. Trends in Food Science & Technology, 12(11), 414-424. doi:10.1016/s0924-2244(02)00019-5Vinci, G., & Antonelli, M. . (2002). Biogenic amines: quality index of freshness in red and white meat. Food Control, 13(8), 519-524. doi:10.1016/s0956-7135(02)00031-2Lovestead, T. M., & Bruno, T. J. (2010). Detection of poultry spoilage markers from headspace analysis with cryoadsorption on a short alumina PLOT column. Food Chemistry, 121(4), 1274-1282. doi:10.1016/j.foodchem.2010.01.044Bota, G. M., & Harrington, P. B. (2006). Direct detection of trimethylamine in meat food products using ion mobility spectrometry. Talanta, 68(3), 629-635. doi:10.1016/j.talanta.2005.05.001Grau, R., Sánchez, A. J., Girón, J., Iborra, E., Fuentes, A., & Barat, J. M. (2011). Nondestructive assessment of freshness in packaged sliced chicken breasts using SW-NIR spectroscopy. Food Research International, 44(1), 331-337. doi:10.1016/j.foodres.2010.10.011Sahar, A., Boubellouta, T., & Dufour, É. (2011). Synchronous front-face fluorescence spectroscopy as a promising tool for the rapid determination of spoilage bacteria on chicken breast fillet. Food Research International, 44(1), 471-480. doi:10.1016/j.foodres.2010.09.006Lin, M., Al-Holy, M., Mousavi-Hesary, M., Al-Qadiri, H., Cavinato, A. G., & Rasco, B. A. (2004). Rapid and quantitative detection of the microbial spoilage in chicken meat by diffuse reflectance spectroscopy (600-1100 nm). Letters in Applied Microbiology, 39(2), 148-155. doi:10.1111/j.1472-765x.2004.01546.xMartínez-Máñez, R., & Sancenón, F. (2003). Fluorogenic and Chromogenic Chemosensors and Reagents for Anions. Chemical Reviews, 103(11), 4419-4476. doi:10.1021/cr010421eAmendola, V., Fabbrizzi, L., & Mosca, L. (2010). Anion recognition by hydrogen bonding: urea-based receptors. Chemical Society Reviews, 39(10), 3889. doi:10.1039/b822552bQuang, D. T., & Kim, J. S. (2010). Fluoro- and Chromogenic Chemodosimeters for Heavy Metal Ion Detection in Solution and Biospecimens. Chemical Reviews, 110(10), 6280-6301. doi:10.1021/cr100154pAmendola, V., Bonizzoni, M., Esteban-Gómez, D., Fabbrizzi, L., Licchelli, M., Sancenón, F., & Taglietti, A. (2006). Some guidelines for the design of anion receptors. Coordination Chemistry Reviews, 250(11-12), 1451-1470. doi:10.1016/j.ccr.2006.01.006Chen, X., Zhou, Y., Peng, X., & Yoon, J. (2010). Fluorescent and colorimetric probes for detection of thiols. Chemical Society Reviews, 39(6), 2120. doi:10.1039/b925092aMohr, G. J. (2006). New chromogenic and fluorogenic reagents and sensors for neutral and ionic analytes based on covalent bond formation–a review of recent developments. Analytical and Bioanalytical Chemistry, 386(5), 1201-1214. doi:10.1007/s00216-006-0647-3Kerry, J. P., O’Grady, M. N., & Hogan, S. A. (2006). Past, current and potential utilisation of active and intelligent packaging systems for meat and muscle-based products: A review. Meat Science, 74(1), 113-130. doi:10.1016/j.meatsci.2006.04.024Rakow, N. A., & Suslick, K. S. (2000). A colorimetric sensor array for odour visualization. Nature, 406(6797), 710-713. doi:10.1038/35021028Lim, S. H., Kemling, J. W., Feng, L., & Suslick, K. S. (2009). A colorimetric sensor array of porous pigments. The Analyst, 134(12), 2453. doi:10.1039/b916571aPalacios, M. A., Nishiyabu, R., Marquez, M., & Anzenbacher, P. (2007). Supramolecular Chemistry Approach to the Design of a High-Resolution Sensor Array for Multianion Detection in Water. Journal of the American Chemical Society, 129(24), 7538-7544. doi:10.1021/ja0704784Wu, Y., Na, N., Zhang, S., Wang, X., Liu, D., & Zhang, X. (2009). Discrimination and Identification of Flavors with Catalytic Nanomaterial-Based Optical Chemosensor Array. Analytical Chemistry, 81(3), 961-966. doi:10.1021/ac801733kJanzen, M. C., Ponder, J. B., Bailey, D. P., Ingison, C. K., & Suslick, K. S. (2006). Colorimetric Sensor Arrays for Volatile Organic Compounds. Analytical Chemistry, 78(11), 3591-3600. doi:10.1021/ac052111sSuslick, B. A., Feng, L., & Suslick, K. S. (2010). Discrimination of Complex Mixtures by a Colorimetric Sensor Array: Coffee Aromas. Analytical Chemistry, 82(5), 2067-2073. doi:10.1021/ac902823wHuang, X., Xin, J., & Zhao, J. (2011). A novel technique for rapid evaluation of fish freshness using colorimetric sensor array. Journal of Food Engineering, 105(4), 632-637. doi:10.1016/j.jfoodeng.2011.03.034Anzenbacher, Jr., P., Lubal, P., Buček, P., Palacios, M. A., & Kozelkova, M. E. (2010). A practical approach to optical cross-reactive sensor arrays. Chemical Society Reviews, 39(10), 3954. doi:10.1039/b926220mRos-Lis, J. V., García, B., Jiménez, D., Martínez-Máñez, R., Sancenón, F., Soto, J., … Valldecabres, M. C. (2004). Squaraines as Fluoro−Chromogenic Probes for Thiol-Containing Compounds and Their Application to the Detection of Biorelevant Thiols. Journal of the American Chemical Society, 126(13), 4064-4065. doi:10.1021/ja031987iRos-Lis, J. V., Martínez-Máñez, R., Rurack, K., Sancenón, F., Soto, J., & Spieles, M. (2004). Highly Selective Chromogenic Signaling of Hg2+in Aqueous Media at Nanomolar Levels Employing a Squaraine-Based Reporter. Inorganic Chemistry, 43(17), 5183-5185. doi:10.1021/ic049422qRos-Lis, J. V., Marcos, M. D., Mártinez-Máñez, R., Rurack, K., & Soto, J. (2005). A Regenerative Chemodosimeter Based on Metal-Induced Dye Formation for the Highly Selective and Sensitive Optical Determination of Hg2+ Ions. Angewandte Chemie International Edition, 44(28), 4405-4407. doi:10.1002/anie.200500583Ros-Lis, J. V., Martínez-Máñez, R., & Soto, J. (2005). Colorimetric Signaling of Large Aromatic Hydrocarbons via the Enhancement of Aggregation Processes. Organic Letters, 7(12), 2337-2339. doi:10.1021/ol050564dCliment, E., Marcos, M. D., Martínez-Máñez, R., Sancenón, F., Soto, J., Rurack, K., & Amorós, P. (2009). The Determination of Methylmercury in Real Samples Using Organically Capped Mesoporous Inorganic Materials Capable of Signal Amplification. Angewandte Chemie International Edition, 48(45), 8519-8522. doi:10.1002/anie.200904243Ábalos, T., Jiménez, D., Martínez-Máñez, R., Ros-Lis, J. V., Royo, S., Sancenón, F., … Parra, M. (2009). Hg2+ and Cu2+ selective detection using a dual channel receptor based on thiopyrylium scaffoldings. Tetrahedron Letters, 50(27), 3885-3888. doi:10.1016/j.tetlet.2009.04.060Climent, E., Giménez, C., Marcos, M. D., Martínez-Máñez, R., Sancenón, F., & Soto, J. (2011). Selective and sensitive chromo-fluorogenic sensing of anionic surfactants in water using functionalised silica nanoparticles. Chemical Communications, 47(24), 6873. doi:10.1039/c1cc11393cRoyo, S., Costero, A. M., Parra, M., Gil, S., Martínez-Máñez, R., & Sancenón, F. (2011). Chromogenic, Specific Detection of the Nerve-Agent Mimic DCNP (a Tabun Mimic). Chemistry - A European Journal, 17(25), 6931-6934. doi:10.1002/chem.201100602García-Acosta, B., Comes, M., Bricks, J. L., Kudinova, M. A., Kurdyukov, V. V., Tolmachev, A. I., … Amorós, P. (2006). Sensory hybrid host materials for the selective chromo-fluorogenic detection of biogenic amines. Chem. Commun., (21), 2239-2241. doi:10.1039/b602497aSancenón, F., Descalzo, A. B., Martínez-Máñez, R., Miranda, M. A., & Soto, J. (2001). A Colorimetric ATP Sensor Based on 1,3,5-Triarylpent-2-en-1,5-diones. Angewandte Chemie International Edition, 40(14), 2640-2643. doi:10.1002/1521-3773(20010716)40:143.0.co;2-aEsteban, J., Ros-Lis, J. V., Martínez-Máñez, R., Marcos, M. D., Moragues, M., Soto, J., & Sancenón, F. (2010). Sensitive and Selective Chromogenic Sensing of Carbon Monoxide by Using Binuclear Rhodium Complexes. Angewandte Chemie International Edition, 49(29), 4934-4937. doi:10.1002/anie.201001344Moragues, M. E., Esteban, J., Ros-Lis, J. V., Martínez-Máñez, R., Marcos, M. D., Martínez, M., … Sancenón, F. (2011). Sensitive and Selective Chromogenic Sensing of Carbon Monoxide via Reversible Axial CO Coordination in Binuclear Rhodium Complexes. Journal of the American Chemical Society, 133(39), 15762-15772. doi:10.1021/ja206251rRos-Lis, J. V., Martínez-Máñez, R., Sancenón, F., Soto, J., Rurack, K., & Weißhoff, H. (2007). Signalling Mechanisms in Anion-Responsive Push-Pull Chromophores: The Hydrogen-Bonding, Deprotonation and Anion-Exchange Chemistry of Functionalized Azo Dyes. European Journal of Organic Chemistry, 2007(15), 2449-2458. doi:10.1002/ejoc.200601111El Haskouri, J., Zárate, D. O. de, Guillem, C., Latorre, J., Caldés, M., Beltrán, A., … Amorós, P. (2002). Silica-based powders and monoliths with bimodal pore systemsElectronic supplementary information (ESI) available: UV–Vis spectrum of sample 3. See http://www.rsc.org/suppdata/cc/b1/b110883b/. Chemical Communications, (4), 330-331. doi:10.1039/b110883bDe Jong, S. (1993). SIMPLS: An alternative approach to partial least squares regression. Chemometrics and Intelligent Laboratory Systems, 18(3), 251-263. doi:10.1016/0169-7439(93)85002-xSmolander, M., Hurme, E., Latva-Kala, K., Luoma, T., Alakomi, H.-L., & Ahvenainen, R. (2002). Myoglobin-based indicators for the evaluation of freshness of unmarinated broiler cuts. Innovative Food Science & Emerging Technologies, 3(3), 279-288. doi:10.1016/s1466-8564(02)00043-7Dainty, R. H. (1996). Chemical/biochemical detection of spoilage. International Journal of Food Microbiology, 33(1), 19-33. doi:10.1016/0168-1605(96)01137-3De Fernando, G. D. G., Nychas, G. J. E., Peck, M. W., & Ordóñez, J. A. (1995). Growth/survival of psychrotrophic pathogens on meat packaged under modified atmospheres. International Journal of Food Microbiology, 28(2), 221-231. doi:10.1016/0168-1605(95)00058-5Descalzo, A. B., Dolores Marcos, M., Monte, C., Martínez-Máñez, R., & Rurack, K. (2007). Mesoporous silica materials with covalently anchored phenoxazinone dyes as fluorescent hybrid materials for vapour sensing. Journal of Materials Chemistry, 17(44), 4716. doi:10.1039/b707473eDescalzo, A. B., Rurack, K., Weisshoff, H., Martínez-Máñez, R., Marcos, M. D., Amorós, P., … Soto, J. (2005). Rational Design of a Chromo- and Fluorogenic Hybrid Chemosensor Material for the Detection of Long-Chain Carboxylates. Journal of the American Chemical Society, 127(1), 184-200. doi:10.1021/ja045683nComes, M., Aznar, E., Moragues, M., Marcos, M. D., Martínez-Máñez, R., Sancenón, F., … Amorós, P. (2009). Mesoporous Hybrid Materials Containing Nanoscopic «Binding Pockets» for Colorimetric Anion Signaling in Water by using Displacement Assays. Chemistry - A European Journal, 15(36), 9024-9033. doi:10.1002/chem.200900890Nychas, G.-J. E., & Tassou, C. C. (1997). Spoilage Processes and Proteolysis in Chicken as Detected by HPLC. Journal of the Science of Food and Agriculture, 74(2), 199-208. doi:10.1002/(sici)1097-0010(199706)74:23.0.co;2-4Jiménez, S. M., Salsi, M. S., Tiburzi, M. C., Rafaghelli, R. C., Tessi, M. A., & Coutaz, V. R. (1997). Spoilage microflora in fresh chicken breast stored at 4 °C : influence of packaging methods. Journal of Applied Microbiology, 83(5), 613-618. doi:10.1046/j.1365-2672.1997.00276.xDe Fernando, G. D. G., Nychas, G. J. E., Peck, M. W., & Ordóñez, J. A. (1995). Growth/survival of psychrotrophic pathogens on meat packaged under modified atmospheres. International Journal of Food Microbiology, 28(2), 221-231. doi:10.1016/0168-1605(95)00058-5BALAMATSIA, C., PATSIAS, A., KONTOMINAS, M., & SAVVAIDIS, I. (2007). Possible role of volatile amines as quality-indicating metabolites in modified atmosphere-packaged chicken fillets: Correlation with microbiological and sensory attributes. Food Chemistry, 104(4), 1622-1628. doi:10.1016/j.foodchem.2007.03.013Balamatsia, C. C., Paleologos, E. K., Kontominas, M. G., & Savvaidis, I. N. (2006). Correlation between microbial flora, sensory changes and biogenic amines formation in fresh chicken meat stored aerobically or under modified atmosphere packaging at 4 °C: possible role of biogenic amines as spoilage indicators. Antonie van Leeuwenhoek, 89(1), 9-17. doi:10.1007/s10482-005-9003-4Smolander, M., Hurme, E., Latva-Kala, K., Luoma, T., Alakomi, H.-L., & Ahvenainen, R. (2002). Myoglobin-based indicators for the evaluation of freshness of unmarinated broiler cuts. Innovative Food Science & Emerging Technologies, 3(3), 279-288. doi:10.1016/s1466-8564(02)00043-7Dainty, R. H. (1996). Chemical/biochemical detection of spoilage. International Journal of Food Microbiology, 33(1), 19-33. doi:10.1016/0168-1605(96)01137-3Berrueta, L. A., Alonso-Salces, R. M., & Héberger, K. (2007). Supervised pattern recognition in food analysis. Journal of Chromatography A, 1158(1-2), 196-214. doi:10.1016/j.chroma.2007.05.02

Clonal chromosomal mosaicism and loss of chromosome Y in elderly men increase vulnerability for SARS-CoV-2

The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, COVID-19) had an estimated overall case fatality ratio of 1.38% (pre-vaccination), being 53% higher in males and increasing exponentially with age. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, we found 133 cases (1.42%) with detectable clonal mosaicism for chromosome alterations (mCA) and 226 males (5.08%) with acquired loss of chromosome Y (LOY). Individuals with clonal mosaic events (mCA and/or LOY) showed a 54% increase in the risk of COVID-19 lethality. LOY is associated with transcriptomic biomarkers of immune dysfunction, pro-coagulation activity and cardiovascular risk. Interferon-induced genes involved in the initial immune response to SARS-CoV-2 are also down-regulated in LOY. Thus, mCA and LOY underlie at least part of the sex-biased severity and mortality of COVID-19 in aging patients. Given its potential therapeutic and prognostic relevance, evaluation of clonal mosaicism should be implemented as biomarker of COVID-19 severity in elderly people. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, individuals with clonal mosaic events (clonal mosaicism for chromosome alterations and/or loss of chromosome Y) showed an increased risk of COVID-19 lethality

Adelante / Endavant

Séptimo desafío por la erradicación de la violencia contra las mujeres del Institut Universitari d’Estudis Feministes i de Gènere "Purificación Escribano" de la Universitat Jaume

Time to Switch to Second-line Antiretroviral Therapy in Children With Human Immunodeficiency Virus in Europe and Thailand.

Background: Data on durability of first-line antiretroviral therapy (ART) in children with human immunodeficiency virus (HIV) are limited. We assessed time to switch to second-line therapy in 16 European countries and Thailand. Methods: Children aged <18 years initiating combination ART (≥2 nucleoside reverse transcriptase inhibitors [NRTIs] plus nonnucleoside reverse transcriptase inhibitor [NNRTI] or boosted protease inhibitor [PI]) were included. Switch to second-line was defined as (i) change across drug class (PI to NNRTI or vice versa) or within PI class plus change of ≥1 NRTI; (ii) change from single to dual PI; or (iii) addition of a new drug class. Cumulative incidence of switch was calculated with death and loss to follow-up as competing risks. Results: Of 3668 children included, median age at ART initiation was 6.1 (interquartile range (IQR), 1.7-10.5) years. Initial regimens were 32% PI based, 34% nevirapine (NVP) based, and 33% efavirenz based. Median duration of follow-up was 5.4 (IQR, 2.9-8.3) years. Cumulative incidence of switch at 5 years was 21% (95% confidence interval, 20%-23%), with significant regional variations. Median time to switch was 30 (IQR, 16-58) months; two-thirds of switches were related to treatment failure. In multivariable analysis, older age, severe immunosuppression and higher viral load (VL) at ART start, and NVP-based initial regimens were associated with increased risk of switch. Conclusions: One in 5 children switched to a second-line regimen by 5 years of ART, with two-thirds failure related. Advanced HIV, older age, and NVP-based regimens were associated with increased risk of switch