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The inhibitory subunit of cardiac troponin (cTnI) is modified by arginine methylation in the human heart (2019)
Journal Article
Onwuli, D. O., Samuel, S., Sfyri, P., Welham, K., Goddard, M., Abu-Omar, Y., …Beltran-Alvarez, P. (2019). The inhibitory subunit of cardiac troponin (cTnI) is modified by arginine methylation in the human heart. International journal of cardiology, 282, 76-80. https://doi.org/10.1016/j.ijcard.2019.01.102

Background The inhibitory subunit of cardiac troponin (cTnI) is a gold standard cardiac biomarker and also an essential protein in cardiomyocyte excitation-contraction coupling. The interactions of cTnI with other proteins are fine-tuned by post-tra... Read More

Inhibiting arginine methylation as a tool to investigate cross-talk with methylation and acetylation post-translational modifications in a glioblastoma cell line (2018)
Journal Article
Samuel, S. F., Marsden, A. J., Deepak, S., Rivero, F., Greenman, J., & Beltran-Alvarez, P. (2018). Inhibiting arginine methylation as a tool to investigate cross-talk with methylation and acetylation post-translational modifications in a glioblastoma cell line. Proteomes, 6(4), https://doi.org/10.3390/proteomes6040044

Glioblastomas (GBM) are the most common grade 4 brain tumours; patients have very poor prognosis with an average survival of 15 months after diagnosis. Novel research lines have begun to explore aberrant protein arginine methylation (ArgMe) as a poss... Read More

Attenuation of oxidative stress-induced lesions in skeletal muscle in a mouse model of obesity-independent hyperlipidaemia and atherosclerosis through the inhibition of Nox2 activity (2018)
Journal Article
Sfyri, P. P., Yuldasheva, N. Y., Tzimou, A., Giallourou, N., Crispi, V., Aburima, A., …Matsakas, A. (2018). Attenuation of oxidative stress-induced lesions in skeletal muscle in a mouse model of obesity-independent hyperlipidaemia and atherosclerosis through the inhibition of Nox2 activity. Free radical biology & medicine, 129, 504-519. https://doi.org/10.1016...eeradbiomed.2018.10.422

Obesity leading to hyperlipidaemia and atherosclerosis is recognised to induce morphological and metabolic changes in many tissues. However, hyperlipidaemia can occur in the absence of obesity. The impact of the latter scenario on skeletal muscle and... Read More

Do sodium channel proteolytic fragments regulate sodium channel expression? (2017)
Journal Article
Onwuli, D. O., Yañez-Bisbe, L., Pinsach-Abuin, M., Tarradas, A., Brugada, R., Greenman, J., …Beltran-Alvarez, P. (2017). Do sodium channel proteolytic fragments regulate sodium channel expression?. Channels, 11(5), 476-481. https://doi.org/10.1080/19336950.2017.1355663

© 2017 Taylor & Francis The cardiac voltage-gated sodium channel (gene: SCN5A, protein: Na V 1.5) is responsible for the sodium current that initiates the cardiomyocyte action potential. Research into the mechanisms of SCN5A gene expression has gai... Read More

Transcriptional regulation of the sodium channel gene (SCN5A) by GATA4 in human heart (2016)
Journal Article
Tarradas, A., Pinsach-Abuin, M., Mackintosh, C., Llorà-Batlle, O., Pérez-Serra, A., Batlle, M., …Pagans, S. (2017). Transcriptional regulation of the sodium channel gene (SCN5A) by GATA4 in human heart. Journal of Molecular and Cellular Cardiology, 102, 74-82. doi:10.1016/j.yjmcc.2016.10.013

Aberrant expression of the sodium channel gene (SCN5A) has been proposed to disrupt cardiac action potential and cause human cardiac arrhythmias, but the mechanisms of SCN5A gene regulation and dysregulation still remain largely unexplored. To gain i... Read More

Mapping arginine methylation in the human body and cardiac disease (2016)
Journal Article
Onwuli, D. O., Cawthorne, C., Beltran-Alvarez, P., Cawthorne, C., Onwuli, D., & Rigau-Roca, L. (2017). Mapping arginine methylation in the human body and cardiac disease. Proteomics. Clinical applications, 11(1-2), 1600106. https://doi.org/10.1002/prca.201600106

Purpose Arginine methylation (ArgMe) is one of the most ubiquitous post-translational modifications, and hundreds of proteins undergo ArgMe in e.g. brain. However, the scope of ArgMe in many tissues, including the heart, is currently under explored.... Read More

An update on transcriptional and post-translational regulation of brain voltage-gated sodium channels (2015)
Journal Article
Beltran-Alvarez, P., & Onwuli, D. O. (2016). An update on transcriptional and post-translational regulation of brain voltage-gated sodium channels. Amino acids, 48(3), 641-651. https://doi.org/10.1007/s00726-015-2122-y

Voltage-gated sodium channels are essential proteins in brain physiology, as they generate the sodium currents that initiate neuronal action potentials. Voltage-gated sodium channels expression, localisation and function are regulated by a range of t... Read More

Clinical and molecular characterization of a cardiac ryanodine receptor founder mutation causing catecholaminergic polymorphic ventricular tachycardia (2015)
Journal Article
Wangüemert, F., Bosch Calero, C., Pérez, C., Campuzano, O., Beltran-Alvarez, P., Scornik, F. S., …Brugada, R. (2015). Clinical and molecular characterization of a cardiac ryanodine receptor founder mutation causing catecholaminergic polymorphic ventricular tachycardia. Heart rhythm : the official journal of the Heart Rhythm Society, 12(7), 1636-1643. https://doi.org/10.1016/j.hrthm.2015.03.033

Background Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a difficult-to-diagnose cause of sudden cardiac death (SCD). We identified a family of 1400 individuals with multiple cases of CPVT, including 36 SCDs during youth. Objectives... Read More

Interplay between R513 methylation and S516 phosphorylation of the cardiac voltage-gated sodium channel (2014)
Journal Article
Beltran-Alvarez, P., Feixas, F., Osuna, S., Díaz-Hernández, R., Brugada, R., & Pagans, S. (2015). Interplay between R513 methylation and S516 phosphorylation of the cardiac voltage-gated sodium channel. Amino acids, 47(2), 429-434. https://doi.org/10.1007/s00726-014-1890-0

Arginine methylation is a novel post-translational modification within the voltage-gated ion channel superfamily, including the cardiac sodium channel, Naᵥ1.5. We show that Naᵥ1.5 R513 methylation decreases S516 phosphorylation rate by 4 orders of ma... Read More

Identification of N-terminal protein acetylation and arginine methylation of the voltage-gated sodium channel in end-stage heart failure human heart (2014)
Journal Article
Beltran-Alvarez, P., Tarradas, A., Chiva, C., Pérez-Serra, A., Batlle, M., Pérez-Villa, F., …Pagans, S. (2014). Identification of N-terminal protein acetylation and arginine methylation of the voltage-gated sodium channel in end-stage heart failure human heart. Journal of Molecular and Cellular Cardiology, 76, 126-129. https://doi.org/10.1016/j.yjmcc.2014.08.014

The α subunit of the cardiac voltage-gated sodium channel, Naᵥ1.5, provides the rapid sodium inward current that initiates cardiomyocyte action potentials. Here, we analyzed for the first time the post-translational modifications of Naᵥ1.5 purified f... Read More