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Identification of Circulating lncRNAs Associated with Gallbladder Cancer Risk by Tissue-Based Preselection, Cis-eQTL Validation, and Analysis of Association with Genotype-Based Expression

  • Alice Blandino
  • , Dominique Scherer
  • , Trine B. Rounge
  • , Sinan U. Umu
  • , Felix Boekstegers
  • , Carol Barahona Ponce
  • , Katherine Marcelain
  • , Valentina Gárate-Calderón
  • , Melanie Waldenberger
  • , Erik Morales
  • , Armando Rojas
  • , César Munoz
  • , Javier Retamales
  • , Gonzalo de Toro
  • , Olga Barajas
  • , María Teresa Rivera
  • , Analía Cortés
  • , Denisse Loader
  • , Javiera Saavedra
  • , Lorena Gutiérrez
  • Alejandro Ortega, Maria Enriqueta Bertrán, Fernando Gabler, Mónica Campos, Juan Alvarado, Fabrizio Moisán, Loreto Spencer, Bruno Nervi, Daniel E. Carvajal-Hausdorf, Héctor Losada, Mauricio Almau, Plinio Fernández, Ivan Gallegos, Jordi Olloquequi, Macarena Fuentes-Guajardo, Rolando Gonzalez-Jose, Maria Cátira Bortolini, Carla Gallo, Andres Ruiz Linares, Francisco Rothhammer, Justo Lorenzo Bermejo
  • Heidelberg University 
  • Cancer Registry of Norway Institute of Population-Based Cancer Research
  • University of Oslo
  • Universidad de Chile
  • Helmholtz Zentrum München - German Research Center for Environmental Health
  • Unidad de Anatomía Patológica del Hospital Regional de Talca
  • Universidad Católica del Maule
  • Instituto Nacional Del Cáncer, Facultad de Salud y Odontología, Universidad Diego Portales
  • Hospital de Puerto Montt
  • Universidad Austral de Chile
  • Hospital del Salvador
  • Hospital Padre Hurtado
  • Hospital San Juan de Dios, Santiago de Chile
  • Hospital Regional
  • Hospital Base de Valdivia
  • Hospital San Borja Arriarán
  • Hospital Regional Guillermo Grant Benavente
  • Pontificia Universidad Católica de Chile
  • Universidad del Desarrollo
  • Hospital de Temuco
  • Hospital de Rancagua
  • University of Barcelona
  • Universidad Autónoma de Chile
  • Consejo Nacional de Investigaciones Científicas y Técnicas
  • Universidade Federal do Rio Grande do Sul
  • Universidad Peruana Cayetano Heredia
  • Fudan University
  • ADES
  • University College London

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Long noncoding RNAs (lncRNAs) play key roles in cell processes and are good candi-dates for cancer risk prediction. Few studies have investigated the association between individual genotypes and lncRNA expression. Here we integrate three separate datasets with information on lncRNA expression only, both lncRNA expression and genotype, and genotype information only to identify circulating lncRNAs associated with the risk of gallbladder cancer (GBC) using robust linear and logistic regression techniques. In the first dataset, we preselect lncRNAs based on expression changes along the sequence “gallstones → dysplasia → GBC”. In the second dataset, we validate associations between genetic variants and serum expression levels of the preselected lncR-NAs (cis-lncRNA-eQTLs) and build lncRNA expression prediction models. In the third dataset, we predict serum lncRNA expression based on individual genotypes and assess the association between genotype-based expression and GBC risk. AC084082.3 and LINC00662 showed increasing expression levels (p-value = 0.009), while C22orf34 expression decreased in the sequence from gallstones to GBC (p-value = 0.04). We identified and validated two cis-LINC00662-eQTLs (r2 = 0.26) and three cis-C22orf34-eQTLs (r2 = 0.24). Only LINC00662 showed a genotyped-based serum expression associated with GBC risk (OR = 1.25 per log2 expression unit, 95% CI 1.04–1.52, p-value = 0.02). Our results suggest that preselection of lncRNAs based on tissue samples and exploitation of cis-lncRNA-eQTLs may facilitate the identification of circulating noncoding RNAs linked to cancer risk.

Original languageEnglish
Article number634
JournalCancers
Volume14
Issue number3
DOIs
StatePublished - 1 Feb 2022

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • EQTLs
  • Genetic association study
  • LncRNAs
  • Molecular phenotypes
  • gallbladder cancer

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