Research Topics
| Ratna RaySummaryAffiliation: Saint Louis University Country: USA Publications
Research Grants
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Detail Information
Publications
Bitter melon (Momordica charantia) extract inhibits breast cancer cell proliferation by modulating cell cycle regulatory genes and promotes apoptosisRatna B Ray
Department of Pathology, Saint Louis University, St Louis, Missouri 63104, USA
Cancer Res 70:1925-31. 2010..Together, these results show that BME modulates signal transduction pathways for inhibition of breast cancer cell growth and can be used as a dietary supplement for prevention of breast cancer...
miRNA-29b suppresses prostate cancer metastasis by regulating epithelial-mesenchymal transition signalingPeng Ru
Department of Pathology, Saint Louis University, St Louis, MO 63104, USA
Mol Cancer Ther 11:1166-73. 2012..Therefore, miR-29b could be a potentially new attractive target for therapeutic intervention in prostate cancer...
Bitter melon extract impairs prostate cancer cell-cycle progression and delays prostatic intraepithelial neoplasia in TRAMP modelPeng Ru
Department of Pathology, Saint Louis University, 1100 South Grand Boulevard, St Louis, MO 63104, USA
Cancer Prev Res (Phila) 4:2122-30. 2011..Together, our results suggest for the first time that oral administration of BME inhibits prostate cancer progression in TRAMP mice by interfering cell-cycle progression and proliferation...
Distinct functional role of Hepatitis C virus core protein on NF-kappaB regulation is linked to genomic variationRatna B Ray
Department of Pathology, Saint Louis University, St Louis, MO 63110, USA
Virus Res 87:21-9. 2002..Taken together, our present data suggest that genomic variation in the core protein determines a distinct functional regulation of NF-kappaB, which may modulate immunnoregulatory molecules early in viral infection...
Ebola virus glycoprotein-mediated anoikis of primary human cardiac microvascular endothelial cellsRatna B Ray
Department of Pathology, Saint Louis University, St Louis, MO 63110, USA
Virology 321:181-8. 2004..Subsequent studies suggested that HCMEC death occurred through apoptosis. Results from this study shed light on the EGP-induced anoikis in primary human cardiac endothelial cells, which may have significant pathological consequences...
Hepatitis C virus core protein inhibits tumor necrosis factor alpha-mediated apoptosis by a protective effect involving cellular FLICE inhibitory proteinKousuke Saito
Department of Internal Medicine, Saint Louis University, 3635 Vista Ave, FDT 8N, St Louis, Missouri 63110, USA
J Virol 80:4372-9. 2006..Taken together, our results suggested that the TNF-alpha-induced apoptotic pathway is inhibited by a sustained c-FLIP expression associated with the expression of HCV core protein, which may play a role in HCV-mediated pathogenesis...
Inhibition of hepatitis C virus core protein expression in immortalized human hepatocytes induces cytochrome c-independent increase in Apaf-1 and caspase-9 activation for cell deathKeith Meyer
Department of Internal Medicine, Saint Louis University, St. Louis, MO 63110, USA
Virology 336:198-207. 2005..These findings may contribute to the understanding of the pathophysiology of HCV core protein-mediated hepatocyte growth regulation and disease progression...
Functional properties of a 16 kDa protein translated from an alternative open reading frame of the core-encoding genomic region of hepatitis C virusArnab Basu
Department of Internal Medicine, Saint Louis University, St Louis, MO 63110, USA
J Gen Virol 85:2299-306. 2004..Taken together, these results suggest that the F protein does not share major properties identified previously for the HCV core protein, other than regulating p21 expression...
Hepatitis C virus core protein and cellular protein HAX-1 promote 5-fluorouracil-mediated hepatocyte growth inhibitionArup Banerjee
Department of Internal Medicine, Saint Louis University, St Louis, Missouri 63119, USA
J Virol 83:9663-71. 2009..These observations underscore an association between HCV core and HAX-1, which promotes 5-FU mediated p53-dependent caspase-7 activation and hepatocyte growth inhibition...
MBP-1 inhibits breast cancer growth and metastasis in immunocompetent miceTatsuo Kanda
Department of Pathology, Saint Louis University, St Louis, Missouri 63104, USA
Cancer Res 69:9354-9. 2009..Taken together, our study shows that MBP-1 acts as a double-edged sword by inhibiting primary and metastatic tumor growth and modulating matrix metalloproteinase expression with a therapeutic potential against breast cancer progression...
Inhibition of HCV replication by small interfering RNARatna B Ray
Department of Pathology, Saint Louis University, St Louis, MO, USA
Methods Mol Biol 510:251-62. 2009....
Hepatitis C virus core protein augments androgen receptor-mediated signalingTatsuo Kanda
Department of Pathology, St Louis University, 1100 S Grand Blvd, DRC 207, St Louis, MO 63104, USA
J Virol 82:11066-72. 2008..Together, our results suggest that HCV core protein acts as a positive regulator in AR signaling, providing further insight into oncogenic potential in the development of HCC in HCV-infected individuals...
Hepatitis C virus core protein interacts with fibrinogen-beta and attenuates cytokine stimulated acute-phase responseMalika Ait-Goughoulte
Department of Internal Medicine, Saint Louis University, St Louis, MO 63104, USA
Hepatology 51:1505-13. 2010..Together, these data suggested a network of interactions between HCV core and the hepatic APR genes, and may contribute to impaired innate immunity for viral persistence...
Hepatitis C virus NS5A protein impairs TNF-mediated hepatic apoptosis, but not by an anti-FAS antibody, in transgenic miceMainak Majumder
Department of Pathology, Saint Louis University, 1402 S Grand Blvd, 4th Floor, St. Louis, MO 63104, USA
Virology 294:94-105. 2002..Together, our results suggest that NS5A impairs TNF-mediated apoptosis by interfering upstream of the signal transduction pathway and may play a role in HCV-mediated pathogenesis...
c-myc Promoter-binding protein 1 (MBP-1) regulates prostate cancer cell growth by inhibiting MAPK pathwayAsish K Ghosh
Department of Pathology, Saint Louis University, St Louis, Missouri 63104, USA
J Biol Chem 280:14325-30. 2005..Together, our results suggested a novel role of MBP-1 for suppression of prostate cancer cell growth by regulating the MEK5-mediated signaling pathway...
MBP-1 mediated apoptosis involves cytochrome c release from mitochondriaAsish K Ghosh
Department of Pathology, Saint Louis University, St. Louis, Missouri, MO 63104, USA
Oncogene 21:2775-84. 2002..Taken together, our results suggest that MBP-1 selectively represses Bcl-xL expression in MCF-7 cells and induces mitochondrial involvement in the apoptotic process...
Hepatitis C virus core protein is necessary for the maintenance of immortalized human hepatocytesArnab Basu
Department of Internal Medicine, Saint Louis University, Missouri 63110, USA
Virology 298:53-62. 2002..Thus, targeted inhibition may contribute to the development of new therapeutic modalities for prevention of HCV core protein function...
Inhibition of hepatitis C virus protein expression by RNA interferenceAdrish Sen
Department of Pathology, Saint Louis University, St. Louis, MO 63104, USA
Virus Res 96:27-35. 2003..Taken together, our results demonstrated that siRNA was effective in inhibiting HCV protein expression, and may have therapeutic potential to limit HCV replication in chronically infected patients...
Hepatitis C virus NS5A mediated STAT3 activation requires co-operation of Jak1 kinaseBhaswati Sarcar
Department of Pathology, Saint Louis University, St Louis, MO 63104, USA
Virology 322:51-60. 2004..Taken together, our results suggested that NS5A activates STAT3 through co-operation of Jak1 kinase and activated STAT3 may contribute to HCV-mediated pathogenesis...
Small interfering RNA targeted to hepatitis C virus 5' nontranslated region exerts potent antiviral effectTatsuo Kanda
Departments of Pathology, Saint Louis University, St Louis, Missouri 63110, USA
J Virol 81:669-76. 2007..Therefore, we have identified a conserved sequence targeted to the HCV genome that can inhibit replication of different genotypes, suggesting the potential of siRNA as an additional therapeutic modality against HCV infection...
Microarray analyses and molecular profiling of Stat3 signaling pathway induced by hepatitis C virus core protein in human hepatocytesArnab Basu
Department of Internal Medicine, Liver Center and Cancer Center, Saint Louis University, St. Louis, MO 63110, USA
Virology 349:347-58. 2006..Identification of these modulated genes with potential roles may help in the selection of targets for therapies against HCV-mediated liver disease progression...
Tumor-suppressive effects of MBP-1 in non-small cell lung cancer cellsAsish K Ghosh
Department of Pathology and Cancer Center, Saint Louis University, St Louis, Missouri 63104, USA
Cancer Res 66:11907-12. 2006..Taken together, this study suggests that MBP-1 expression induces a novel form of necrosis-like cell death and MBP-1 could be a potential gene therapeutic candidate against non-small cell lung tumor growth...
Hepatitis C virus core protein upregulates serine phosphorylation of insulin receptor substrate-1 and impairs the downstream akt/protein kinase B signaling pathway for insulin resistanceSutapa Banerjee
Division of Infectious Diseases and Immunology, Center for Vaccine Development, Edward A Doisy Research Center, 1100 S Grand Blvd, 8th Floor, St Louis, MO 63104, USA
J Virol 82:2606-12. 2008..Taken together, our results demonstrated that HCV core protein increases IRS-1 phosphorylation at Ser(312) which may contribute in part to the mechanism of insulin resistance...
Hepatitis C virus genotype 1a growth and induction of autophagyMalika Ait-Goughoulte
Division of Infectious Diseases and Immunology, Center for Vaccine Development, Edward A Doisy Research Center, 1100 S Grand Blvd, 8th Floor, St Louis, MO 63104, USA
J Virol 82:2241-9. 2008..Taken together, our results suggested that HCV genotype 1a (clone H77) can be serially passaged in IHH and that HCV infection induces an autophagic response in hepatocytes...
Stellate cell apoptosis by a soluble mediator from immortalized human hepatocytesArnab Basu
Department of Internal Medicine, Saint Louis University, St. Louis, MO 63110, USA
Apoptosis 11:1391-400. 2006..Taken together, our results suggested that a soluble mediator secreted from immortalized human hepatocytes plays an important role in hepatic stellate cell growth regulation...
Generation of infectious hepatitis C virus in immortalized human hepatocytesTatsuo Kanda
Department of Pathology, Saint Louis University, 3635 Vista Avenue, St. Louis, Missouri 63110, USA
J Virol 80:4633-9. 2006..A similar level of virus growth was observed upon transfection of RNA from HCV genotype 2a (JFH1) into IHH. Taken together, our results suggest that IHH support HCV genome replication and virus assembly...
Hepatitis C virus differentially modulates activation of forkhead transcription factors and insulin-induced metabolic gene expressionArup Banerjee
Department of Internal Medicine, Saint Louis University, St Louis, Missouri, USA
J Virol 84:5936-46. 2010....
Hepatitis C virus inhibits cell surface expression of HLA-DR, prevents dendritic cell maturation, and induces interleukin-10 productionKousuke Saito
Departments of Internal Medicine, Saint Louis University, St Louis, Missouri, USA
J Virol 82:3320-8. 2008..These effects may account for or contribute to the low overall level of immunogenicity of HCV observed in chronically infected patients...
Hepatitis C virus infection induces the beta interferon signaling pathway in immortalized human hepatocytesTatsuo Kanda
Department of Pathology, Saint Louis University, St Louis, MO 63104, USA
J Virol 81:12375-81. 2007..Together, our results suggested that HCV infection in IHH induces the IFN signaling pathway, which corroborates observations from natural HCV infection in humans...
Inhibition of intrahepatic gamma interferon production by hepatitis C virus nonstructural protein 5A in transgenic miceTatsuo Kanda
Department of Pathology, Saint Louis University, 1100 S Grand Blvd, St Louis, MO 63104, USA
J Virol 83:8463-9. 2009..Together, our results suggested that HCV NS5A acts as an immunomodulator by inhibiting IFN-gamma production and may play an important role toward establishment of chronic HCV infection...
Knockdown of MBP-1 in human prostate cancer cells delays cell cycle progressionAsish K Ghosh
Department of Pathology, Saint Louis University, St Louis, Missouri 63104, USA
J Biol Chem 281:23652-7. 2006..2 cells restored cyclin A and cyclin B1 expression. Together, these results suggest that knockdown of MBP-1 in prostate cancer cells perturbs cell proliferation by inhibiting cyclin A and cyclin B1 expression...
Inhibitors of mTOR reverse doxorubicin resistance conferred by PTEN status in prostate cancer cellsViktor Grünwald
The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland 21231, USA
Cancer Res 62:6141-5. 2002..These results provide the rationale to explore in clinical trials whether these agents increase the response to chemotherapy of patients with PTEN-negative/Akt active cancers...
Research Grants
- HCV NS5A protein and pathogenesisRatna Ray; Fiscal Year: 2005..This study may also lead to discovery of new therapeutic modalities against persistent HCV infection that affects over 170 million people worldwide. ..
- FUNCTIONAL ROLE OF MBP 1Ratna Ray; Fiscal Year: 2006..To investigate the mechanism by which it induces apoptosis To test the biological effect of MBP-1 disruption in KO mice To determine whether adenovirus-mediated MBP-1 gene transfer can regress tumor growth in vivo. ..
- HEPATITIS C VIRUS NS5A PROTEIN AND PATHOGENESISRatna Ray; Fiscal Year: 2003..Results from this study will lead to a better understanding of the virus mediated pathogenesis. The long term goal of this study is to design effective strategies for the intervention of HCV mediated disease in humans. ..
- C MYC PROMOTER BINDING PROTEINRatna Ray; Fiscal Year: 2000..Interaction of MBP-1 with cellular protein(s) Thus, understanding the role and regulation of this cellular gene may provide future therapeutic modalities of gene regulation in malignancy. ..
- Innate Immunity and Hepatitis C Virus InfectionRatna B Ray; Fiscal Year: 2010..Our study will reveal the molecular mechanisms of viral persistence, which may lead to new therapeutic strategies for treatment of chronic HCV infection. ..
