Robert N. Helsley, PhD
Connect
859-218-1608robert.helsley@uky.edu
741 S. Limestone, BBSRB B347, Lexington, KY 40536
Positions
- Assistant Professor
College Unit(s)
Other Affiliation(s)
- Internal Medicine - Endocrinology
- CVRC - Core Faculty
Biography and Education
Summary:
Bachelors of Science (Miami, OH); PhD (U. of Kentucky) Hometown: Monroe, OHSelected Publications
- Tranter, M., Helsley, R.N., Paulding, W., McGuinness, M., Brokamp, C., Haar, L., Ren, X., and Jones, W.K. (2011) Coordinated post-transcriptional regulation of the Hsp70.3 gene by micro-RNA and alternative polyadenylation. Journal of Biological Chemistry. 286(34): 29828-37. PMID: 21757701
- Park, S-H., Sui, Y., Gizard, F., Xu, J., Pilier-Rios, J., Helsley, R.N., Han, S-S., and Zhou, C. (2012) Myeloid-specific IKKβ deficiency decreases atherosclerosis in LDL receptor-deficient mice. Arteriosclerosis, Thrombosis, and Vascular Biology. 32(12): 2869-76. PMID: 23023371
- Helsley, R.N.*, Sui, Y.*, Ai, N., Park, S-H., Welsh, W.J., and Zhou, C. (2013) Pregnane x receptor mediates dyslipidemia induced by the HIV protease inhibitor amprenavir in mice. Molecular Pharmacology. 83(6):1190-9. PMID: 23519392
- Sui, Y., Park, S-H., Helsley, R.N., Sunkara, M., Gonzalez, F.J., Morris, A.J., and Zhou, C. (2014) Bisphenol A increases atherosclerosis in pregnane x receptor-humanized ApoE deficient mice. Journal of the American Heart Association. 3(2): e000492. PMID: 24755147
- Sui, Y., Park, S.H., Xu, J., Monette, S., Helsley, R.N., Han, S-S., and Zhou, C. (2014) IKKβ links vascular inflammation to obesity and atherosclerosis. Journal of Experimental Medicine. 211(5): 869-886. PMID: 24799533
- Sui, Y.*, Helsley, R.N.*, Park, S.H., Song, X., Liu, Z., and Zhou, C. (2015) Intestinal PXR links xenobiotic exposure and hypercholesterolemia. Molecular Endocrinology. 29(5): 765-776. PMID: 25811240
- Helsley, R.N., Sui, Y., Park, S-H., Liu, Z., Lee, R.G., Zhu, B., Kern, P.A., and Zhou, C. (2016) Targeting IKKβ in adipocyte lineage cells for treatment of obesity and metabolic dysfunctions. Stem Cells. 34(7): 1883-95. PMID: 26991836
- Park, S-H., Liu, Z., Sui, Y., Helsley, R.N., Zhu, B., Powell, D.K., Kern, P.A., and Zhou, C. (2016) IKKβ is essential for adipocyte survival and adaptive adipose remodeling in obesity. Diabetes. 65(6): 1616-29. PMID: 26993069
- Helsley, R.N. and Zhou, C. (2017) Epigenetic impact of endocrine disrupting chemicals on lipid homeostasis and atherosclerosis: a pregnane X receptor-centric view. Environ Epigenet. 3(4): 1-15 PMID: 29119010
- Ferguson, D., Zhang, J., Davis, M.A., Helsley, R.N., et al. (2017) The lipid droplet-associated protein perilipin 3 facilitates hepatitis C virus-driven hepatic steatosis. J Lipid Res. 58(2): 420-432. PMID: 27941027
- Schugar, R.C., Shih, D.M., Warrier, M., Helsley, R.N., et al. (2017) The TMAO-Producing Enzyme Flavin-Containing Monooxygenase 3 Regulates Obesity and the Beiging of White Adipose Tissue. Cell Rep. 19(12): 2451-2461. PMID: 28683320
- Gromovsky, A.D., Schugar, R.C., Brown, A.L., Helsley, R.N., et al (2018) Δ-5 Fatty Acid Desaturase FADS1 Impacts Metabolic Disease by Balancing Proinflammatory and Proresolving Lipid Mediators. Arterioscler Thromb Vasc Biol. 38(1): 218-231. PMID: 29074585
- Gwag, T., Meng, Z., Sui, Y., Helsley, R.N., Park, S.H., Wang, S., Greenberg, R.N., and Zhou, C. (2019) Non-nucleoside reverse transcriptase inhibitor efavirenz activates PXR to induce hypercholesterolemia and hepatic steatosis. J Hepatol. 70(5): 930-940. PMID: 30677459
- Helsley, R.N., Venkateshwari, V., Brown, A.L, et al (2019) Obesity-Linked Suppression of Membrane-Bound O-Acyltransferase 7 (MBOAT7) Drives Non-Alcoholic Fatty Liver Disease. eLife. 17;8e49882. PMID: 31621579
- Anthony, S.R., Guarnieri, A.R., Gozdiff, A., Helsley, R.N., Owens, A.P., and Tranter, M. (2019) Mechanisms Linking Adipose Tissue Inflammation to Cardiac Hypertrophy and Fibrosis. Clin Sci. 133(22):2329-2344. PMID: 31777927
- Brown, A.L., Conrad, K., Allende, D.S., Gromovsky, A.D., Neumann, C., Owens, P.A., Tranter, M., and Helsley, R.N. (2019) Choline Supplementation Attenuates High Fat Diet-Induced Hepatocellular Carcinoma (HCC) in Mice. J Nutr. 150(4):775-783. PMID: 31851339
- Helsley, R.N. and Softic, S. (2020) Fructose metabolism by the guts cuts liver fat. J Mol Med. 98(5):733-734. PMID: 32318746
- Pathak, P., Helsley, R.N., Brown, A.L., Buffa, J.A., et al. (2020) Small Molecule Inhibition of Gut Microbial Choline Trimethylamine Lyase Activity Alters Host Cholesterol and Bile Acid Metabolism. Am J Physiol Heart Circ Physiol. 318(6):H1474-1486 PMID: 32330092
- Anthony, S.R., Guarnieri, A., Lanzillotta, L., Gozdiff, A., Green, L.C., O’Grady, K., Helsley, R.N., Owens, P.A., and Tranter, M. (2020) HuR Expression in Adipose Tissue Mediates Energy Expenditure and Acute Thermogenesis Independent of UCP1 Expression. Adipocyte. 9(1): 335-345 PMID: 32713230
- Helsley, R.N.*, Moreau, F.*, Gupta, M.K., Radulescu, A, DeBosch, B., and Softic, S. (2020) Tissue-Specific Fructose Metabolism in Obesity and Diabetes. Curr Diab Rep. 20(11):64 PMID: 33057854
- Damen, M.S.M.A, Stankiewicz, T., Park, S-H., Helsley, R.N., et al. (2021) Non-hematopoietic IL-4Ra expression contributes to fructose-driven obesity and metabolic sequelae. Int J Obes (Lond). Doi: 10.1038/s41366-021-00902-6. PMID: 34302121
- Park, S.H., Helsley, R.N., et al. (2021) A Luminescence-Based Protocol for Assessing Fructose Metabolism via Quantification of Ketohexokinase Enzymatic Activity in Mouse or Human Hepatocytes. STAR Protoc. Doi: 10.1016/j.xpro.2021.100731. PMCID: PMC8361265
- Schugar, R.C., Gliniak, C.M., Osborn, L.J., Massey, W., Sangwan, N., Horak, A., Banerjee, R., Orabi, D., Helsley, R.N., et al. (2022) Gut microbe-targeted choline trimethylamine lyase inhibition improves obesity via rewiring of host circadian rhythms. eLife. Doi: 10.7554/eLife.63998 PMID: 35072627
- Helsley, R.N.*, Miyata, T.*, Kadam, A.*, et al (2022) Gut microbial trimethylamine is elevated in alcohol-associated hepatitis and contributes to ethanol-induced liver injury in mice. eLife. Doi: 10.7554/eLife.76554 PMID: 35084335
- Couch, S.C., Helsley, R.N., et al. (2022) Design and rational for the supermarket and web-based intervention targeting nutrition (SuperWIN) for cardiovascular risk reduction trial. Am Heart J. 248:21-34. PMID: 35218725
- Steen, D., Helsley, R.N., et al. (2022) Efficacy of Supermarket and Web-based Interventions for Improving Dietary Quality: A Randomized, Controlled Trial. Nat Med. PMID: 36456831
- Inci, M.K., Park, S.H., Helsley, R.N., et al. (2022) Fructose Impairs Fat Oxidation: Implications for the Mechanism of Western-Diet Induced NAFLD. J Nutr Biochem. PMID: 36403701
- Helsley, R.N., Park, S-H., Vekaria, V., et al. (2023) Ketohexokinase-C Mediates Global Protein Acetylation to Decrease Carnitine Palmitoyltransferase 1a Mediated Fatty Acid Oxidation. J Hepatol. PMID: 36822479
- Benson, T.W., Conrad, K.A., Li, X.S., Wang, Z., Helsley, R.N., et al. (2023) Gut Microbiota-derived Trimethylamine N-oxide Contributes to Abdominal Aortic Aneurysm Through Inflammatory and Apoptotic Mechanisms. Circulation. PMCID: PMC10071415
- Park, S.H., Helsley, R.N., Fadhul, T. et al. (2023) Fructose Induced KHK-C Increases ER Stress and Modules Hepatic Transcriptome to Drive Liver Disease in Diet-Induced and Genetic Models of NAFLD. Metabolism. PMID: 37230214
- Zelows, M.M., Cady, C., Dharanipragada, N., Mead, A.M., Kipp, Z.A., Bates, E.A., Varadharajan, V., Banerjee, R., Park, S-H, Shelman, N.R., Clarke, H.A., Hawkinson, T.R., Medina, T., Sun, R.C., Lydic, T.A., Hinds, T.D., Brown, J.M., Softic, S., Graf, G.A. and Helsley, R.N. (2023) Loss of Carnitine Palmitoyltransferase 1a Reduces Docosahexaenoic Acid-Containing Phospholipids and Drives Sexually Dimorphic Liver Disease in Mice. Mol Metab. PMCID: PMC10568566
- Varadharajan, V., Ramachandiran, L., Massey, W.J., Jain, R., Banerjee, R., Horak, A.J., McMullen, M.R., Huang, E., Bellar, A., Lorkowski, S.W., Guilshan, K., Helsley, R.N., et al. (2024) Membrane Bound O-Acyltransferase (Mboat7) Shapes Lysosomal Lipid Homeostasis and Function to Control Alcohol-Associated Liver Injury. eLife. PMCID: PMC11034944
- Bates, E.A., Kipp, Z.A., Lee, W-H., Martinez, G.J., Weaver, L., Becker, K.N., Pauss, S.N., Creeden, J.F., Anspach, G.A., Helsley, R.N., et al. (2024) FOXS1 is Increased in Liver Fibrosis and Regulates TGFβ Responsiveness and Proliferation Pathways in Human Hepatic Stellate Cells. J Biol Chem. PMCID: PMC10878791
- Hohe, R., Banerjee, R., Cao, S., Jung, B.M., Horak, A.J., Massey, W.J., Varadharajan, W., Zajczenko, N., Burrows, A.C., Dutta, S., Goudarzi, M., Carter, A., Helsley, R.N., et al. (2024) The Nonvesicular Sterol Transporter Aster-C Plays a Minor Role in Whole Body Cholesterol Balance. In Press at Front. Physiol.