Sanjeev Gupta, M.D., M.B.,B.S.
Our laboratory focuses on the development of liver cell-based therapies and relevant aspects of stem cell biology. Major goals are directed towards understanding mechanisms by which transplanted cells engraft, proliferate and function in the liver, obtaining insights into cell-cell interactions that may alter the fate of transplanted cells, and addressing the potential of liver cell types that might improve liver repopulation. The laboratory works with stem/progenitor cells isolated from fetal human tissues and uses such cells for studies of gene regulation, cell differentiation and therapeutic gene expression, including induction of pancreatic beta cell function.
A variety of rodent models, including various inbred mouse strains, the hemophilia A mouse, the Gunn rat, the Nagase analbuminemic rat, the dipeptidyl peptidase IV deficient (DPPIV-) rat and the DPPIV- mouse, the Long-Evans Cinnamon rat, etc., are available for studies. Several animals constitute unique genetic models for studying hepatic pathophysiology. Animal models, where acute or chronic liver injury is induced with toxins, including cell cycle regulators, are available. The DPPIV- rat and mouse-based transplantation systems have been very helpful for analyzing the fate of transplanted adult and fetal hepatocytes, as well as stem/progenitor cells. Studies are conducted to examine whether liver repopulation with hepatocyte transplantation could offer metabolic function in chronic liver disease and improve survival in animals with liver failure. Related studies are aimed at propagating subsets of stem/progenitor cells from fetal human tissues and analyzing mechanisms of cell differentiation, including after transplantation in immunodeficient animals. Some studies utilize microarray-based gene expression analysis and others use established cell and molecular biology methods. Further studies concern mechanisms of gene transfer with lentiviral vectors. Additional studies are aimed at developing novel models of human disease. The overall effort is aimed at translating basic research findings into clinical studies in people.
The laboratory collaborates with a number of leading investigators at Einstein or elsewhere as necessary.
- Bahde R, Kapoor S, Bandi S, Bhargava K, Palestro C, Gupta S. Directly acting drugs prostacyclin or nitroglycerine and endothelin receptor blocker bosentan improve cell engraftment in rat liver. Hepatology 2012 Aug 16. doi:10.1002/hep.26005. [Epub ahead of print].
- Kakabadze Z, Shanava K, Ricordi C, Shapiro AMJ, Gupta S, Berishvili E. An isolated venous sac as a novel site for cell therapy in diabetes mellitus. Transplantation 2012;94:319-324.
- Viswanathan P, Gupta S. New directions for cell-based therapies in acute liver failure. J Hepatol 2012; 57:913-915.
- Park SO, Kumar M, Gupta S. TGF-β and iron differently alter HBV replication in human hepatocytes through TGF-β/BMP signaling and cellular microRNA expression. PLoS One 2012;7(6):e39276.
- Wang J, Cao H, You C, Yuan B, Bahde R, Gupta S, Nishigori C, Niedernhofer LJ, Brooks PJ, Wang Y. Endogenous formation and repair of oxidatively induced G[8-5 m]T intrastrand cross-link lesion. Nucleic Acids Res 2012;40:7368-7374.
- Bahde R, Kapoor S, Bhargava KK, Schilsky ML, Palestro CJ, Gupta S. Positron emission tomography with copper-64-histidine for nonivasive diagnosis of biliary copper excretion in LEC rat model of Wilson's disease. J Nucl Med 2012;53:961-968.
- Follenzi A, Raut S, Merlin S, Sarkar R, Gupta S. Role of bone marrow transplantation for correcting hemophilia A in mice. Blood 2012;119;5532-5542. Editorial commentary: 5344-5346.
- Bandi S, Cheng K, Joseph B, Gupta S. Spontaneous origin from human embryonic stem cells of early developmental stage liver cells displaying conjoint meso-endodermal phenotype with hepatic functions. J Cell Sci 2012;125:1274-83.
- Kumar M, Follenzi A, Garforth S, Gupta S. Control of hepatitis B virus replication by antiviral microRNA transferrred by lentiviral vectors for potential cell and gene therapy approaches. Antiviral Ther 2012;17:519-28.
- Enami Y, Joseph B, Bandi S, Lin J, Gupta S. Molecular perturbations restrict potential for liver repopulation of hepatocytes isolated from nonheart-beating donor rats. Hepatology 2012;55:1182-92.
- Kumar M, Bandi S, Cheng K, Gupta S. Transplantation of human cells in the peritoneal cavity of immunodeficient mice for rapid assays of hepatitis B virus replication. Xenotransplantation 2011;18:380-9.
- Wang J, Yuan B, Guerrero C, Bahde R, Gupta S, Wang Y. Quantification of oxidative DNA lesions in tissues of Long-Evans Cinnamon rats by capillary high-performance liquid chromatography-tandem mass spectrometry coupled with stable isotope-dilution method. Anal Chem 2011;83:2201-9.
- Bandi S, Joseph B, Berishvili E, Singhania R, Wu YM, Cheng K, Gupta S. Perturbations in ataxia telangiectasia mutant signaling pathways after drug-induced acute liver failure and their reversal during rescue of animals by cell therapy. Am J Pathol 2011; 178:161-74.
- Kakabadze Z, Gupta S, Brandhorst D, Berishvili E. Long-term engraftment and function of transplanted pancreatic islets in vascularized segments of small intestine. Transpl Int 2011;24:175-83.
- Cheng K, Surana M, Follenzi A, Fleischer N, Gupta S. Switching of mesodermal and endodermal properties in hTERT-modified and expanded fetal human pancreatic progenitor cells. Stem Cell Res Ther 2010; 1:6.
- Cheng K, Benten D, Bhargava K, Inada M, Joseph B, Palestro C, Gupta S. Hepatic targeting and biodistribution of human fetal liver stem/progenitor cells and adult hepatocytes in mice. Hepatology 2009; 50:1194-203.
- Enami Y, Bandi S, Kapoor S, Krohn N, Joseph B, Gupta S. Hepatic stellate cells promote hepatocyte engraftment in rat liver after prostaglandin-endoperoxide synthase inhibition. Gastroenterology 2009; 136:2356-64.
- Krohn N, Kapoor S, Enami Y, Follenzi A, Bandi S, Joseph B, Gupta S. Hepatocyte transplantation-induced liver inflammation is driven by cytokines-chemokines associated with neutrophils and Kupffer cells. Gastroenterology 2009;136:1806-17.
- Joseph B, Kapoor S, Schilsky ML, Gupta S. Bile salt-induced pro-oxidant liver damage promotes transplanted cell proliferation for correcting Wilson disease in the LEC rat model. Hepatology 2009;49:1616-24.
- Inada M, Follenzi A, Cheng K, Surana M, Joseph B, Benten D, Bandi S. Qian H, Gupta S. Phenotype reversion in fetal human liver epithelial cells identifies the role of an intermediate meso-endodermal stage before hepatic maturation. J Cell Sci 2008;121:1002-13.
- Follenzi A, Benten D, Novikoff P, Faulkner L, Raut S, Gupta S. Transplanted endothelial cells repopulate the liver endothelium and correct the phenotype of hemophilia A mice. J Clin Invest 2008;118:935-945.
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