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Colin T Shearn

TitleAsst Professor-Research
InstitutionUniversity of Colorado Denver - Anschutz Medical Campus
DepartmentSOP-Administration
Phone303/724-6144

    Collapse Research 
    Collapse research activities and funding
    F32AA018613     (SHEARN, COLIN)May 1, 2010 - Apr 30, 2013
    NIH/NIAAA
    Regulation of PTEN in chronic alcohol mediated liver disease
    Role: Principal Investigator

    Collapse Bibliographic 
    Collapse selected publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    1. Maclean KN, Jiang H, Aivazidis S, Kim E, Shearn CT, Harris PS, Petersen DR, Allen RH, Stabler SP, Roede JR. Taurine treatment prevents derangement of the hepatic ?-glutamyl cycle and methylglyoxal metabolism in a mouse model of classical homocystinuria: regulatory crosstalk between thiol and sulfinic acid metabolism. FASEB J. 2017 Nov 03. PMID: 29101223.
      View in: PubMed
    2. Shearn CT, Saba LM, Roede JR, Orlicky DJ, Shearn AH, Petersen DR. Differential carbonylation of proteins in end-stage human fatty and nonfatty NASH. Free Radic Biol Med. 2017 Dec; 113:280-290. PMID: 28988798.
      View in: PubMed
    3. Assiri MA, Roy SR, Harris PS, Ali H, Liang Y, Shearn CT, Orlicky DJ, Roede JR, Hirschey MD, Backos DS, Fritz KS. Chronic Ethanol Metabolism Inhibits Hepatic Mitochondrial Superoxide Dismutase via Lysine Acetylation. Alcohol Clin Exp Res. 2017 Oct; 41(10):1705-1714. PMID: 28804911.
      View in: PubMed
    4. Ronis M, Mercer K, Engi B, Pulliam C, Zimniak P, Hennings L, Shearn C, Badger T, Petersen D. Global Deletion of Glutathione S-Transferase A4 Exacerbates Developmental Nonalcoholic Steatohepatitis. Am J Pathol. 2017 Feb; 187(2):418-430. PMID: 27998724.
      View in: PubMed
    5. Sundaram SS, Halbower A, Pan Z, Robbins K, Capocelli KE, Klawitter J, Shearn CT, Sokol RJ. Nocturnal hypoxia-induced oxidative stress promotes progression of pediatric non-alcoholic fatty liver disease. J Hepatol. 2016 Sep; 65(3):560-9. PMID: 27501738; PMCID: PMC4992457 [Available on 09/01/17].
    6. Osna NA, Carter WG, Ganesan M, Kirpich IA, McClain CJ, Petersen DR, Shearn CT, Tomasi ML, Kharbanda KK. Aberrant post-translational protein modifications in the pathogenesis of alcohol-induced liver injury. World J Gastroenterol. 2016 Jul 21; 22(27):6192-200. PMID: 27468209; PMCID: PMC4945978.
    7. Shearn CT, Orlicky DJ, McCullough RL, Jiang H, Maclean KN, Mercer KE, Stiles BL, Saba LM, Ronis MJ, Petersen DR. Liver-Specific Deletion of Phosphatase and Tensin Homolog Deleted on Chromosome 10 Significantly Ameliorates Chronic EtOH-Induced Increases in Hepatocellular Damage. PLoS One. 2016; 11(4):e0154152. PMID: 27124661; PMCID: PMC4849752.
    8. Shearn CT, Fritz KS, Shearn AH, Saba LM, Mercer KE, Engi B, Galligan JJ, Zimniak P, Orlicky DJ, Ronis MJ, Petersen DR. Deletion of GSTA4-4 results in increased mitochondrial post-translational modification of proteins by reactive aldehydes following chronic ethanol consumption in mice. Redox Biol. 2016 Apr; 7:68-77. PMID: 26654979; PMCID: PMC4683459.
    9. Shearn CT, Orlicky DJ, Saba LM, Shearn AH, Petersen DR. Increased hepatocellular protein carbonylation in human end-stage alcoholic cirrhosis. Free Radic Biol Med. 2015 Dec; 89:1144-53. PMID: 26518673; PMCID: PMC4762037 [Available on 12/01/16].
    10. Harris PS, Roy SR, Coughlan C, Orlicky DJ, Liang Y, Shearn CT, Roede JR, Fritz KS. Chronic ethanol consumption induces mitochondrial protein acetylation and oxidative stress in the kidney. Redox Biol. 2015 Dec; 6:33-40. PMID: 26177469; PMCID: PMC4511634.
    11. Shearn CT, Petersen DR. Understanding the tumor suppressor PTEN in chronic alcoholism and hepatocellular carcinoma. Adv Exp Med Biol. 2015; 815:173-84. PMID: 25427907.
      View in: PubMed
    12. Ronis MJ, Mercer KE, Gannon B, Engi B, Zimniak P, Shearn CT, Orlicky DJ, Albano E, Badger TM, Petersen DR. Increased 4-hydroxynonenal protein adducts in male GSTA4-4/PPAR-a double knockout mice enhance injury during early stages of alcoholic liver disease. Am J Physiol Gastrointest Liver Physiol. 2015 Mar 01; 308(5):G403-15. PMID: 25501545; PMCID: PMC4346750.
    13. Galligan JJ, Fritz KS, Backos DS, Shearn CT, Smathers RL, Jiang H, MacLean KN, Reigan PR, Petersen DR. Oxidative stress-mediated aldehyde adduction of GRP78 in a mouse model of alcoholic liver disease: functional independence of ATPase activity and chaperone function. Free Radic Biol Med. 2014 Aug; 73:411-20. PMID: 24924946; PMCID: PMC4395467.
    14. Shearn CT, Mercer KE, Orlicky DJ, Hennings L, Smathers-McCullough RL, Stiles BL, Ronis MJ, Petersen DR. Short term feeding of a high fat diet exerts an additive effect on hepatocellular damage and steatosis in liver-specific PTEN knockout mice. PLoS One. 2014; 9(5):e96553. PMID: 24818992; PMCID: PMC4018288.
    15. Shearn CT, Backos DS, Orlicky DJ, Smathers-McCullough RL, Petersen DR. Identification of 5' AMP-activated kinase as a target of reactive aldehydes during chronic ingestion of high concentrations of ethanol. J Biol Chem. 2014 May 30; 289(22):15449-62. PMID: 24722988; PMCID: PMC4140901.
    16. Shearn CT, Smathers RL, Backos DS, Reigan P, Orlicky DJ, Petersen DR. Increased carbonylation of the lipid phosphatase PTEN contributes to Akt2 activation in a murine model of early alcohol-induced steatosis. Free Radic Biol Med. 2013 Dec; 65:680-92. PMID: 23872024; PMCID: PMC3859727.
    17. Li Y, He L, Zeng N, Sahu D, Cadenas E, Shearn C, Li W, Stiles BL. Phosphatase and tensin homolog deleted on chromosome 10 (PTEN) signaling regulates mitochondrial biogenesis and respiration via estrogen-related receptor a (ERRa). J Biol Chem. 2013 Aug 30; 288(35):25007-24. PMID: 23836899; PMCID: PMC3757167.
    18. Shearn CT, Smathers RL, Jiang H, Orlicky DJ, Maclean KN, Petersen DR. Increased dietary fat contributes to dysregulation of the LKB1/AMPK pathway and increased damage in a mouse model of early-stage ethanol-mediated steatosis. J Nutr Biochem. 2013 Aug; 24(8):1436-45. PMID: 23465594; PMCID: PMC3713161.
    19. Smathers RL, Galligan JJ, Shearn CT, Fritz KS, Mercer K, Ronis M, Orlicky DJ, Davidson NO, Petersen DR. Susceptibility of L-FABP-/- mice to oxidative stress in early-stage alcoholic liver. J Lipid Res. 2013 May; 54(5):1335-45. PMID: 23359610; PMCID: PMC3622328.
    20. Galligan JJ, Smathers RL, Shearn CT, Fritz KS, Backos DS, Jiang H, Franklin CC, Orlicky DJ, Maclean KN, Petersen DR. Oxidative Stress and the ER Stress Response in a Murine Model for Early-Stage Alcoholic Liver Disease. J Toxicol. 2012; 2012:207594. PMID: 22829816; PMCID: PMC3399426.
    21. Smathers RL, Fritz KS, Galligan JJ, Shearn CT, Reigan P, Marks MJ, Petersen DR. Characterization of 4-HNE modified L-FABP reveals alterations in structural and functional dynamics. PLoS One. 2012; 7(6):e38459. PMID: 22701647; PMCID: PMC3368874.
    22. Shearn CT, Reigan P, Petersen DR. Inhibition of hydrogen peroxide signaling by 4-hydroxynonenal due to differential regulation of Akt1 and Akt2 contributes to decreases in cell survival and proliferation in hepatocellular carcinoma cells. Free Radic Biol Med. 2012 Jul 01; 53(1):1-11. PMID: 22580126; PMCID: PMC3377776.
    23. Shearn CT, Fritz KS, Thompson JA. Protein damage from electrophiles and oxidants in lungs of mice chronically exposed to the tumor promoter butylated hydroxytoluene. Chem Biol Interact. 2011 Jul 15; 192(3):278-86. PMID: 21536018.
      View in: PubMed
    24. Shearn CT, Fritz KS, Reigan P, Petersen DR. Modification of Akt2 by 4-hydroxynonenal inhibits insulin-dependent Akt signaling in HepG2 cells. Biochemistry. 2011 May 17; 50(19):3984-96. PMID: 21438592.
      View in: PubMed
    25. Fritz KS, Galligan JJ, Smathers RL, Roede JR, Shearn CT, Reigan P, Petersen DR. 4-Hydroxynonenal inhibits SIRT3 via thiol-specific modification. Chem Res Toxicol. 2011 May 16; 24(5):651-62. PMID: 21449565; PMCID: PMC3113719.
    26. Shearn CT, Smathers RL, Stewart BJ, Fritz KS, Galligan JJ, Hail N, Petersen DR. Phosphatase and tensin homolog deleted on chromosome 10 (PTEN) inhibition by 4-hydroxynonenal leads to increased Akt activation in hepatocytes. Mol Pharmacol. 2011 Jun; 79(6):941-52. PMID: 21415306; PMCID: PMC3102545.
    27. Galligan JJ, Fritz KS, Tipney H, Smathers RL, Roede JR, Shearn CT, Hunter LE, Petersen DR. Profiling impaired hepatic endoplasmic reticulum glycosylation as a consequence of ethanol ingestion. J Proteome Res. 2011 Apr 01; 10(4):1837-47. PMID: 21319786; PMCID: PMC3501204.
    28. Hail N, Chen P, Kepa JJ, Bushman LR, Shearn C. Dihydroorotate dehydrogenase is required for N-(4-hydroxyphenyl)retinamide-induced reactive oxygen species production and apoptosis. Free Radic Biol Med. 2010 Jul 01; 49(1):109-16. PMID: 20399851; PMCID: PMC2875309.
    29. Senchina DS, Flinn GN, McCann DA, Kohut ML, Shearn CT. Bloodroot (Sanguinaria canadensis L., Papaveraceae) Enhances Proliferation and Cytokine Production by Human Peripheral Blood Mononuclear Cells in an In Vitro Model. J Herbs Spices Med Plants. 2009 Jan 01; 15(1):45. PMID: 20111671.
      View in: PubMed
    30. Shearn CT, Fritz KS, Meier BW, Kirichenko OV, Thompson JA. Carbonyl reductase inactivation may contribute to mouse lung tumor promotion by electrophilic metabolites of butylated hydroxytoluene: protein alkylation in vivo and in vitro. Chem Res Toxicol. 2008 Aug; 21(8):1631-41. PMID: 18597497.
      View in: PubMed
    31. Shearn CT, Norris FA. Biochemical characterization of the type I inositol polyphosphate 4-phosphatase C2 domain. Biochem Biophys Res Commun. 2007 Apr 27; 356(1):255-9. PMID: 17349979.
      View in: PubMed
    32. Shearn CT, Walker J, Norris FA. Identification of a novel spliceoform of inositol polyphosphate 4-phosphatase type Ialpha expressed in human platelets: structure of human inositol polyphosphate 4-phosphatase type I gene. Biochem Biophys Res Commun. 2001 Aug 10; 286(1):119-25. PMID: 11485317.
      View in: PubMed
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