Long non-coding RNA mitophagy and ALK-negative anaplastic lymphoma-associated transcript: a novel regulator of mitophagy in T-cell lymphoma.
Haematologica
; 108(12): 3333-3346, 2023 Dec 01.
Article
in En
| MEDLINE
| ID: mdl-37381763
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.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Lymphoma, T-Cell, Peripheral
/
Lymphoma, Large-Cell, Anaplastic
/
RNA, Long Noncoding
Type of study:
Risk_factors_studies
Limits:
Humans
Language:
En
Journal:
Haematologica
Year:
2023
Document type:
Article