Samy L Habib

Summary

Affiliation: University of Texas Health Science Center
Country: USA

Publications

  1. ncbi Tuberin inhibits production of the matrix protein fibronectin in diabetes
    Samy L Habib
    Department of Cellular and Structural Biology, The University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
    J Am Soc Nephrol 23:1652-62. 2012
  2. ncbi Molecular mechanism of regulation of OGG1: tuberin deficiency results in cytoplasmic redistribution of transcriptional factor NF-YA
    Samy L Habib
    South Texas Veterans Healthcare System, Geriatric Research, Education and Clinical Center, Department of Medicine, University of Texas Health Science Center, San Antonio, Texas 78229, USA
    J Mol Signal 4:8. 2009
  3. ncbi The tuberin/mTOR pathway promotes apoptosis of tubular epithelial cells in diabetes
    Chakradhar Velagapudi
    The University of Texas Health Science Center, Department of Medicine MSC 7882, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
    J Am Soc Nephrol 22:262-73. 2011
  4. ncbi Novel mechanism of regulation of the DNA repair enzyme OGG1 in tuberin-deficient cells
    Samy L Habib
    Department of Geriatrics, Geriatric Research, Education, and Clinical Center, South Texas Veterans Healthcare System, San Antonio, TX 78229, USA
    Carcinogenesis 31:2022-30. 2010
  5. ncbi Tuberous sclerosis complex and DNA repair
    Samy L Habib
    South Texas Veterans Healthcare System, Geriatric Research, Education and Clinical Center and Department of Medicine, The University of Texas Health Science Center, San Antonio, TX 78229, USA
    Adv Exp Med Biol 685:84-94. 2010
  6. ncbi Novel mechanism of reducing tumourigenesis: upregulation of the DNA repair enzyme OGG1 by rapamycin-mediated AMPK activation and mTOR inhibition
    Samy L Habib
    Geriatric Research Education and Clinical Center, South Texas Veterans Healthcare System, TX, USA
    Eur J Cancer 46:2806-20. 2010
  7. ncbi Insight into mechanism of oxidative DNA damage in angiomyolipomas from TSC patients
    Samy L Habib
    Geriatric Research Education and Clinical Center, South Texas Veterans Healthcare System, San Antonio, TX, USA
    Mol Cancer 8:13. 2009
  8. ncbi Genetic polymorphisms in OGG1 and their association with angiomyolipoma, a benign kidney tumor in patients with tuberous sclerosis
    Samy L Habib
    George O Brien Kidney Research Center, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229, USA
    Cancer Biol Ther 7:23-7. 2008
  9. ncbi Tuberin haploinsufficiency is associated with the loss of OGG1 in rat kidney tumors
    Samy L Habib
    O Brien Kidney Research Center, Department of Medicine, University of Texas Health Science Center, San Antonio, TX 78229, USA
    Mol Cancer 7:10. 2008
  10. ncbi Tuberin regulates the DNA repair enzyme OGG1
    Samy L Habib
    George O Brien Kidney Research Center, Department of Medicine, University of Texas Health Science Center, San Antonio, TX 78229, USA
    Am J Physiol Renal Physiol 294:F281-90. 2008

Collaborators

Detail Information

Publications18

  1. ncbi Tuberin inhibits production of the matrix protein fibronectin in diabetes
    Samy L Habib
    Department of Cellular and Structural Biology, The University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
    J Am Soc Nephrol 23:1652-62. 2012
    ..Taken together, these data suggest that tuberin plays a central role in the development of renal hypertrophy and in modulating the production of the matrix protein fibronectin in diabetes...
  2. ncbi Molecular mechanism of regulation of OGG1: tuberin deficiency results in cytoplasmic redistribution of transcriptional factor NF-YA
    Samy L Habib
    South Texas Veterans Healthcare System, Geriatric Research, Education and Clinical Center, Department of Medicine, University of Texas Health Science Center, San Antonio, Texas 78229, USA
    J Mol Signal 4:8. 2009
    ..These data define a novel mechanism of regulation of OGG1 through tuberin. This mechanism may be important in the pathogenesis of kidney tumors in patients with TSC disease...
  3. ncbi The tuberin/mTOR pathway promotes apoptosis of tubular epithelial cells in diabetes
    Chakradhar Velagapudi
    The University of Texas Health Science Center, Department of Medicine MSC 7882, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
    J Am Soc Nephrol 22:262-73. 2011
    ..Furthermore, gene silencing of tuberin with siRNA decreased cleavage of PARP. These data show that the tuberin/mTOR pathway promotes apoptosis of tubular epithelial cells in diabetes, mediated in part by cleavage of PARP by YY1...
  4. ncbi Novel mechanism of regulation of the DNA repair enzyme OGG1 in tuberin-deficient cells
    Samy L Habib
    Department of Geriatrics, Geriatric Research, Education, and Clinical Center, South Texas Veterans Healthcare System, San Antonio, TX 78229, USA
    Carcinogenesis 31:2022-30. 2010
    ..These data indicate a novel role for tuberin in the regulation of OGG1 through the transcription factor AP4. This regulation may be important in the pathogenesis of kidney tumours in patients with TSC disease...
  5. ncbi Tuberous sclerosis complex and DNA repair
    Samy L Habib
    South Texas Veterans Healthcare System, Geriatric Research, Education and Clinical Center and Department of Medicine, The University of Texas Health Science Center, San Antonio, TX 78229, USA
    Adv Exp Med Biol 685:84-94. 2010
    ....
  6. ncbi Novel mechanism of reducing tumourigenesis: upregulation of the DNA repair enzyme OGG1 by rapamycin-mediated AMPK activation and mTOR inhibition
    Samy L Habib
    Geriatric Research Education and Clinical Center, South Texas Veterans Healthcare System, TX, USA
    Eur J Cancer 46:2806-20. 2010
    ..These data comprise the first report to provide one mechanism whereby rapamycin might prevent or inhibit the formation and progression of certain cancers...
  7. ncbi Insight into mechanism of oxidative DNA damage in angiomyolipomas from TSC patients
    Samy L Habib
    Geriatric Research Education and Clinical Center, South Texas Veterans Healthcare System, San Antonio, TX, USA
    Mol Cancer 8:13. 2009
    ..In addition we evaluated the phophorylation level of downstream targets of mTOR, phospho-S70K, in kidney tumor tissue from TSC patients...
  8. ncbi Genetic polymorphisms in OGG1 and their association with angiomyolipoma, a benign kidney tumor in patients with tuberous sclerosis
    Samy L Habib
    George O Brien Kidney Research Center, Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229, USA
    Cancer Biol Ther 7:23-7. 2008
    ..Taken together, our findings suggest that Ser(326)Cys variant of OGG1 may confer risk for development of angiomyolipomas by increasing oxidative DNA damage...
  9. ncbi Tuberin haploinsufficiency is associated with the loss of OGG1 in rat kidney tumors
    Samy L Habib
    O Brien Kidney Research Center, Department of Medicine, University of Texas Health Science Center, San Antonio, TX 78229, USA
    Mol Cancer 7:10. 2008
    ..We investigated the distribution of protein expression and the activity of OGG1 and 8-oxo-dG and correlated it with the expression of tuberin in kidneys of wild type and Eker rats and tumor from Eker rat...
  10. ncbi Tuberin regulates the DNA repair enzyme OGG1
    Samy L Habib
    George O Brien Kidney Research Center, Department of Medicine, University of Texas Health Science Center, San Antonio, TX 78229, USA
    Am J Physiol Renal Physiol 294:F281-90. 2008
    ..These data provide the first evidence that tuberin regulates a specific DNA repair enzyme, OGG1. This regulation may be important in the pathogenesis of kidney tumors in patients with TSC...
  11. ncbi Novel adenine adducts, N7-guanine-AFB1 adducts, and p53 mutations in patients with schistosomiasis and aflatoxin exposure
    Samy L Habib
    Department of Community and Environmental Medicine, College of Medicine, University of California at Irvine, Irvine, CA 92697, USA
    Cancer Detect Prev 30:491-8. 2006
    ..Schistosomiasis is known to cause p53 mutation. We hypothesized that the combination of schistosomiasis and aflatoxin B1 increases the incidence of p53 gene mutation...
  12. ncbi Mechanism of oxidative DNA damage in diabetes: tuberin inactivation and downregulation of DNA repair enzyme 8-oxo-7,8-dihydro-2'-deoxyguanosine-DNA glycosylase
    Simona Simone
    George O Brien Kidney Research Center, Department of Medicine, Division of Nephrology, University of Texas Health Science Center, San Antonio, Texas, USA
    Diabetes 57:2626-36. 2008
    ..To investigate potential mechanisms of oxidative DNA damage in a rat model of type 1 diabetes and in murine proximal tubular epithelial cells and primary culture of rat proximal tubular epithelial cells...
  13. ncbi TSC2 deficiency increases PTEN via HIF1alpha
    Lenin Mahimainathan
    Department of Medicine, University of Texas Health Science Center, San Antonio, Texas 78229 3900, USA
    J Biol Chem 284:27790-8. 2009
    ..These data suggest that PTEN may safeguard against developing malignant tumors in patients with TSC deficiency...
  14. ncbi Role of tuberin in neuronal degeneration
    Samy L Habib
    Department of Medicine, University of Texas Health Science Center, San Antonio, TX, USA
    Neurochem Res 33:1113-6. 2008
    ..Our data provide new information regarding the possible role of tuberin dysfunction in major neurodegenerative disorders, such as AD and PD, whereby inhibition of tuberin function may trigger an onset of neuronal cell death...
  15. ncbi Regulation of PI 3-K, PTEN, p53, and mTOR in Malignant and Benign Tumors Deficient in Tuberin
    Samy L Habib
    Department of Cellular and Structural Biology, University of Texas Health Science Center at San Antonio, TX, USA
    Genes Cancer 2:1051-60. 2011
    ....
  16. ncbi Fibronectin induces ureteric bud cells branching and cellular cord and tubule formation
    Peng Ye
    Department of Pediatrics and Department of Internal Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229, USA
    Kidney Int 66:1356-64. 2004
    ..Only an antibody to alpha(3)beta(1) integrin substantially blocks the effect of fibronectin. Other mechanisms, including unidentified integrins, are likely involved in fibronectin-induced cord and tubule formation...
  17. ncbi Reduced constitutive 8-oxoguanine-DNA glycosylase expression and impaired induction following oxidative DNA damage in the tuberin deficient Eker rat
    Samy L Habib
    Center for Molecular and Cellular Toxicology, Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712-1074, USA
    Carcinogenesis 24:573-82. 2003
    ..In keeping with this view, acute TGHQ-induced cytotoxicity was greater in Tsc-2(EK/+) rats than in Tsc-2(+/+) rats. The mechanism(s) coupling tuberin expression to the regulation of OGG1 are not known and are under investigation...
  18. ncbi Influence of cigarette smoking on prostaglandin synthesis and cyclooxygenase-2 gene expression in human urinary bladder cancer
    Alaa F Badawi
    Division of Population Science, Fox Chase Cancer Center, 7701 Burholme Avenue, Philadelphia, PA 19111, USA
    Cancer Invest 20:651-6. 2002
    ..The observed over-expression of COX-2 gene in human urinary bladder and the concomitant increases in PG synthesis may explain, at least in part, the mechanism by which cigarette smoking influences the development of urothelial neoplasia...