ULB Center for Diabetes Research

Molecular Mechanisms of Polygenic and Monogenic Diabetes

Group Leader: Prof. Mariana Igoillo-Esteve

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Mariana Igoillo-Esteve’s research is focused on the study of the molecular mechanisms of β-cell dysfunction and death in type 2 diabetes and monogenic forms of diabetes, with the ultimate goal to identify novel strategies to prevent β-cell demise.

 

Group Leader, Prof. Mariana Igoillo-Esteve

Mariana Igoillo-Esteve obtained her Biochemistry degree in 1999 at the Faculty of Pharmacy and Biochemistry, University of Buenos Aires (UBA) Argentina; and her PhD in Molecular Biology and Biotechnology in 2005 at the IIB/INTECH-CONICET, National University of General San Martin, Argentina. During her PhD training and first post-doc at the De Duve Institute, Université Catholique de Louvain, Belgium, she studied the metabolism of trypanosomatid parasites causing Chagas disease, Leishmaniasis, and sleeping sickness. In 2007, she shifted her research interest to human metabolism and joined the ULB Center for Diabetes Research (UCDR), Université Libre de Bruxelles (ULB), headed by Prof. Decio Eizirik where she studied the molecular mechanism of pancreatic β-cell dysfunction and death in monogenic and polygenic forms of diabetes. In 2016 she was appointed Chargé de Cours/Associate Professor of the Faculty of Medicine, Université Libre de Bruxelles.

 

Research Interests

Mariana Igoillo-Esteve’s research is focused on the study of the molecular mechanisms of β-cell dysfunction and death in type 2 diabetes and monogenic forms of diabetes, with the ultimate goal to identify novel strategies to prevent β-cell demise. Specifically, she studies the loss of functional β-cell mass related to mitochondrial dysfunction, endoplasmic reticulum stress and altered tRNA modifications, three biological pathways contributing to β-cell failure in monogenic and type 2 diabetes. The monogenic forms of diabetes can be considered as “human knockout” models for specific pathways/functions. The elucidation of disease mechanisms in these rare forms of diabetes contributes to further the understanding of β-cell failure in polygenic type 1 and type 2 diabetes, and to propose tailored therapeutic strategies.

The Igoillo-Esteve group studies the pathogenic mechanisms and potential therapeutic approaches of diabetes in Friedreich’s ataxia, a mitochondrial neurodegenerative disease with high diabetes prevalence, and monogenic diabetes caused by mutations in the endoplasmic reticulum stress gene WFS1. Her team also studies the molecular mechanisms underlying cellular demise in a syndrome of young onset diabetes and microcephaly, caused by nonsense mutations in the tRNA methyltransferase TRMT10A. Her findings indicate that tRNA methylation is essential for β-cell survival. Through high quality, innovative and disease-relevant research Dr Igoillo-Esteve is expanding knowledge on tRNA biology in pancreatic β-cells and shedding light on this novel pathway of β-cell failure, relevant to monogenic and polygenic forms of diabetes.

 
 
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Honours & Awards

  • 2016 Laureate of the Funds for Health Research, King Baudouin Foundation
  • 2013 Young Investigator Award of the Belgian Endocrine Society
  • 2011 Young Investigator Award of the Belgian Endocrine Society

Selected Publications

  1. Cnop M, Toivoneen S, Igoillo-Esteve M, Salpea P. Endoplasmic reticulum stress and eIF2 alpha phosphorylation: the Achilles heel of pancreatic beta cells. Molecular Metabolism. 2017. 6(9), 1024-1039. doi: 10.1016/j.molmet.2017.06.001.
  2. Abdulkarim B, Nicolino M, Igoillo-Esteve M, Daures M, Romero S, Philippi A, Senée V, Lopes, M, Cunha D, Harding H, Derbois C, Bendelac N, Hattersley A, Eizirik DL, Ron D, Cnop M, Julier C. A missense mutation in PPP1R15B causes a syndrome including diabetes, short stature and microcephaly. Diabetes 2015; 64(11): 3951-62.
  3. Igoillo-Esteve M, Gurgul-Convey, Hu A, Romagueira Bichara Dos Santos L, Abdulkarim B, Chintawar S, Marselli L, Marchetti P, Jonas JC, Eizirik DL, Pandolfo M, Cnop M. Unveiling a common mechanism of apoptosis in β-cells and neurons in Friedreich’s ataxia.  Human Mol. Genet. 2015; 24(8): 2274-86.
  4. Cnop M, Abdulkarim B, Bottu G, Cunha DA, Igoillo-Esteve M, Masini M, Turatsinze JV, Griebel T, Villate O, Santin I, Bugliani M, Ladriere L, Marselli L, McCarthy MI, Marchetti P, Sammeth M, Eizirik DL. RNA-sequencing identifies dysregulation of the human pancreatic islet transcriptome by the saturated fatty acid palmitate. Diabetes. 2014; 63:1978-93.
  5. Igoillo-Esteve M, Genin A, Lambert N, Désir J, Pirson I, Abdulkarim B, Simonis N, Drielsma A, Marselli L, Marchetti P, Vanderhaeghen P, Eizirik DL, Wuyts W, Julier C, Chakera AJ, Ellard S, Hattersley AT, Abramowicz M, Cnop M. tRNA methyltransferase homolog gene TRMT10A mutation in young onset diabetes and primary microcephaly in humans. PLoS Genet. 2013; 9(10): doi:10.1371.
  6. Cnop M, Mulder H, Igoillo-Esteve M. Diabetes in Friedreich Ataxia. Journal of Neurochemistry. 2013; 126 (Suppl. 1): 94-102.
  7. Cunha DA, Igoillo-Esteve M, Gurzov EN, Germano CM, Naamane N, Marhfour I, Fukaya M, Vanderwinden JM, Gysemans C, Mathieu Ch, Marselli L, Marchetti P, Eizirik DL, Cnop M. DP5 and Puma mediate the ER stress-mitochondrial dialog triggering lipotoxic rodent and human β-cell apoptosis. Diabetes. 2012; 61(11):2763-75.
  8. Cnop M*, Igoillo-Esteve M*, Rai M, Begu A, Serroukh Y, Depondt Ch, Musuaya AE, Marhfour I, Ladrière L, Moles Lopez X, Lefkaditis D, Moore F, Brion JP, Cooper JM, Schapira AHV, Clark A, Koeppen AH, Marchetti P, Pandolfo M, Eizirik DL, and Féry F. Central role and mechanisms of β-cell dysfunction and death in Friedreich ataxia- associated diabetes. Annals of Neurology. 2012; 72: 971-82 *Shared first authorship.
  9. Igoillo-Esteve M, Marselli L, Cunha DA, Ladrière L, Ortis F, Grieco FA, Dotta F, Weir GC, Marchetti P, Eizirik DL, Cnop M. Palmitate induces a pro-inflammatory response in human pancreatic islets that mimics CCL2 expression by β-cells in type 2 diabetes. Diabetologia. 2010; 53(7): 1395-405.
  10. Ladrière L*, Igoillo-Esteve M*, Cunha DA, Brion JP, Bugliani M, Marchetti P, Eizirik DL, Cnop M. Enhanced signaling downstream of ribonucleic acid-activated protein kinase-like endoplasmic reticulum kinase potentiates lipotoxic endoplasmic reticulum stress in human islets. The Journal of Clinical Endocrinology and Metabolism. 2010; 95 (3): 1442-9. *Shared first authorship.