Dr. Babich joined the Division of Nephrology, Department of Medicine, University of Maryland School of Medicine in 2012 as an Instructor. He is a biophysicist with a Ph.D. in Molecular Biology obtained from the Institute of Cytology of Russian Academy of Sciences (St. Petersburg, Russia), while working on a collaborative project with the Institute of Biochemistry, Free University of Berlin (Berlin, Germany). He took advantage of his background in biophysics and molecular biology to master multiple techniques in transport physiology, electrophysiology, cell imaging, biochemistry, and molecular biology during two consecutive postdoctoral fellowships at the UT Southwestern Medical Center at Dallas, US and the National Institute for Medical Research London, UK (sponsored by a Career Development Fellowship). The combination of these techniques allowed him to break through technical boundaries and to explore new areas in the mechanistic investigation of ion transport regulation and protein trafficking at and from the cell membrane (exo- and endocytosis).
Dr. Babich’s research interest is focused on the study of biophysical properties and molecular aspects of regulation of ion transport. In particular, he is studying the mechanisms of transport of sodium ion across cell membrane in the renal proximal tubules at the molecular level. Regulation of sodium absorption in this nephron segment, where more than 60% of total sodium is reabsorbed, is fundamental for the maintenance of body sodium and fluid homeostasis. Dr. Babich studies the transport activity of electroneutral sodium ion transporters (e.g. Na+/H+ exchangers) in real-time using a combination of electrophysiology (patch-clamp) and self-referencing ion selective electrodes. To investigate sodium transport at molecular level, he also utilizes state-of-the-art live cell fluorescence microscopy techniques (TIRFM, FRET, FRAP).
Education and Training
- 1997: M. Sc. in Biophysics, Saint Petersburg State Technical University, Saint Petersburg, Russia
- 2000: Ph. D. in Molecular Biology, Institute of Cytology of Russian Academy of Sciences, Saint Petersburg, Russia
- 1998, 2000: Visiting Scientist at the Institute of Biochemistry, Free University of Berlin, Germany
- 2001 – 2004: Postdoctoral Fellowship at the Department of Internal Medicine, Division of Nephrology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- 2004 – 2007: Career Development Fellowship, National Institute for Medical Research, Medical Research Council, London, UK
- Babich V, Aksenov N, Alexeenko V, Oei SL, Buchlow G, Tomilin N: Association of some potential hormone response elements in human genes with the Alu family repeats. Gene 239: 341-349, 1999.
- Zeng WZ, Babich V, Ortega B, Quigley R, White SJ, Welling PA, Huang CL: Evidence for endocytosis of ROMK potassium channel via clathrin-coated vesicles. Am J Physiol Renal Physiol 283: F630-639, 2002.
- Babich V, Zeng WZ, Yeh BI, Ibraghimov-Beskrovnaya O, Cai Y, Somlo S, Huang CL: The N-terminal extracellular domain is required for polycystin-1-dependent channel activity. J Biol Chem 279: 25582-25589, 2004.
- Di Sole F, Cerull R, Babich V, Quinones H, Gisler SM, Biber J, Murer H, Burckhardt G, Helmle-Kolb C, Moe OW: Acute regulation of Na/H exchanger NHE3 by adenosine A(1) receptors is mediated by calcineurin homologous protein. J Biol Chem 279: 2962-2974, 2004.
- Erent M, Meli A, Moisoi N, Babich V, Hannah MJ, Skehel P, Knipe L, Zupancic G, Ogden D, Carter T: Rate, extent and concentration dependence of histamine-evoked Weibel-Palade body exocytosis determined from individual fusion events in human endothelial cells. J Physiol 583: 195-212, 2007.
- Babich V, Meli A, Knipe L, Dempster JE, Skehel P, Hannah MJ, Carter T: Selective release of molecules from Weibel-Palade bodies during a lingering kiss. Blood 111: 5282-5290, 2008.
- Di Sole F, Cerull R, Babich V, Casavola V, Helmle-Roth C, Burckhardt G: Short- and long-term A3 adenosine receptor activation inhibits the Na+/H+ exchanger NHE3 activity and expression in opossum kidney cells. J Cell Physiol 216: 221-233, 2008.
- Babich V, Knipe L, Hewlett L, Meli A, Dempster J, Hannah MJ, Carter T: Differential effect of extracellular acidosis on the release and dispersal of soluble and membrane proteins secreted from the Weibel-Palade body. J Biol Chem 284: 12459-12468, 2009.
- Di Sole F, Babich V, Moe OW: The calcineurin homologous protein-1 increases Na(+)/H(+) -exchanger 3 trafficking via ezrin phosphorylation. J Am Soc Nephrol 20: 1776-1786, 2009.
- Kiskin NI, Hellen N, Babich V, Hewlett L, Knipe L, Hannah MJ, Carter T. Protein mobilities and P-selectin storage in Weibel-Palade bodies. J Cell Sci. 123:2964-2975, 2010.
- Di Sole F, Hu MC, Zhang J, Babich V, Bobulescu IA, Shi M, McLeroy P, Rogers TE, Moe OW. Reduction of Na/H Exchanger 3 protein and transcript expression in acute ischemia-reperfusion is mediated by extractable tissue factor(s). Kidney Int. 80(8):822-831, 2011.
- Di Sole F, Vadnagara K, Moe OW, Babich V. Calcineurin Homologous Protein: A multi-functional Ca2+-binding protein family. Am J Physiol Renal Physiol. 303(2):F165-F179, 2012