Related Experiment Video
Updated: Jul 25, 2025

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy
Published on: January 31, 2025
Long non-coding RNA mitophagy and ALK-negative anaplastic lymphoma-associated transcript: a novel regulator of
Valentina Mularoni1, Benedetta Donati1, Annalisa Tameni1
1Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Viale Risorgimento 80, 42123, Reggio Emilia.
Abstract:
Long non-coding RNA (lncRNA) are emerging as powerful and versatile regulators of transcriptional programs and distinctive biomarkers of progression of T-cell lymphoma. Their role in the aggressive anaplastic lymphoma kinase-negative (ALK-) subtype of anaplastic large cell lymphoma (ALCL) has been elucidated only in part. Starting from our previously identified ALCL-associated lncRNA signature and performing digital gene expression profiling of a retrospective cohort of ALCL, we defined an 11 lncRNA signature able to discriminate among ALCL subtypes. We selected a not previously characterized lncRNA, MTAAT, with preferential expression in ALK- ALCL, for molecular and functional studies. We demonstrated that lncRNA MTAAT contributes to an aberrant mitochondrial turnover restraining mitophagy and promoting cellular proliferation. Functionally, lncRNA MTAAT acts as a repressor of a set of genes related to mitochondrial quality control via chromatin reorganization. Collectively, our work demonstrates the transcriptional role of lncRNA MTAAT in orchestrating a complex transcriptional program sustaining the progression of ALK- ALCL.
Related Concept Videos
lncRNA - Long Non-coding RNAs
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Abnormal Proliferation
The Intrinsic Apoptotic Pathway
Negative Regulator Molecules
MicroRNAs

