HMGA1 regulates trabectedin sensitivity in advanced soft-tissue sarcoma (STS) : A Spanish Group for Research on Sarcomas (GEIS) study

David S. Moura, Jose L. Mondaza-Hernandez, Paloma Sanchez-Bustos, Maria Peña-Chilet, Juan A. Cordero-Varela, Maria Lopez-Alvarez, Jaime Carrillo-Garcia, Marta Martin-Ruiz, Pablo Romero-Gonzalez, Marta Renshaw-Calderon, Rafael Ramos, David Marcilla, Ramiro Alvarez-Alegret, Carolina Agra Pujol, Francisco Izquierdo, Luis Ortega-Medina, Francisco Martin-Davila, Carmen Nieves Hernandez-Leon, Cleofe Romagosa, Maria Angeles Vaz SalgadoJavier Lavernia, Sílvia Bagué Rosell, Empar Mayodormo-Aranda, Rosa Alvarez, Claudia Valverde, Javier Martinez-Trufero, Carolina Castilla-Ramirez, Antonio Gutierrez, Joaquín Dopazo, Nadia Hindi, Jesus Garcia-Foncillas, Javier Martin-Broto

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2 Citations (Scopus)

Abstract

HMGA1 is a structural epigenetic chromatin factor that has been associated with tumor progression and drug resistance. Here, we reported the prognostic/predictive value of HMGA1 for trabectedin in advanced soft-tissue sarcoma (STS) and the effect of inhibiting HMGA1 or the mTOR downstream pathway in trabectedin activity. The prognostic/predictive value of HMGA1 expression was assessed in a cohort of 301 STS patients at mRNA (n = 133) and protein level (n = 272), by HTG EdgeSeq transcriptomics and immunohistochemistry, respectively. The effect of HMGA1 silencing on trabectedin activity and gene expression profiling was measured in leiomyosarcoma cells. The effect of combining mTOR inhibitors with trabectedin was assessed on cell viability in vitro studies, whereas in vivo studies tested the activity of this combination. HMGA1 mRNA and protein expression were significantly associated with worse progression-free survival of trabectedin and worse overall survival in STS. HMGA1 silencing sensitized leiomyosarcoma cells for trabectedin treatment, reducing the spheroid area and increasing cell death. The downregulation of HGMA1 significantly decreased the enrichment of some specific gene sets, including the PI3K/AKT/mTOR pathway. The inhibition of mTOR, sensitized leiomyosarcoma cultures for trabectedin treatment, increasing cell death. In in vivo studies, the combination of rapamycin with trabectedin downregulated HMGA1 expression and stabilized tumor growth of 3-methylcholantrene-induced sarcoma-like models. HMGA1 is an adverse prognostic factor for trabectedin treatment in advanced STS. HMGA1 silencing increases trabectedin efficacy, in part by modulating the mTOR signaling pathway. Trabectedin plus mTOR inhibitors are active in preclinical models of sarcoma, downregulating HMGA1 expression levels and stabilizing tumor growth.
Original languageEnglish
Article number219
Number of pages18
JournalCellular and Molecular Life Sciences
Volume81
Issue number1
DOIs
Publication statusPublished - 17 May 2024

Keywords

  • HMGA1
  • Leiomyosarcoma
  • Soft-tissue sarcoma
  • Trabectedin
  • mTOR pathway
  • Prognosis
  • Humans
  • Sarcoma/drug therapy
  • Gene Expression Regulation, Neoplastic/drug effects
  • Signal Transduction/drug effects
  • Leiomyosarcoma/drug therapy
  • Xenograft Model Antitumor Assays
  • Animals
  • Antineoplastic Agents, Alkylating/pharmacology
  • HMGA1a Protein/metabolism
  • Drug Resistance, Neoplasm/genetics
  • Cell Line, Tumor
  • Female
  • Mice
  • TOR Serine-Threonine Kinases/metabolism
  • Trabectedin/pharmacology

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