Abstract：
:Telomere maintenance mechanisms (TMM) are used by cancer cells to avoid apoptosis, 85-90% reactivate telomerase, while 10-15% use the alternative lengthening of telomeres (ALT). Due to anti-telomerase-based treatments, some tumors switch from a telomerase-dependent mechanism to ALT; in fact, the co-existence between both mechanisms has been observed in some cancers. Although different elements in the ALT pathway are uncovered, some molecular mechanisms are still poorly understood. Therefore, with the aim to identify potential molecular markers for the study of ALT, we combined in silico approaches in a 411 telomere maintenance gene set. As a consequence, we conducted a genomic analysis of these genes in 31 Pan-Cancer Atlas studies from The Cancer Genome Atlas and found 325,936 genomic alterations; from which, we identified 20 genes highly mutated in the cancer studies. Finally, we made a protein-protein interaction network and enrichment analysis to observe the main pathways of these genes and discuss their role in ALT-related processes, like homologous recombination and homology directed repair. Overall, due to the lack of understanding of the molecular mechanisms of ALT cancers, we proposed a group of genes, which after ex vivo validations, could represent new potential therapeutic markers in the study of ALT.
journal_name
Genes (Basel)journal_title
Genesauthors
Armendáriz-Castillo I,López-Cortés A,García-Cárdenas J,Guevara-Ramírez P,Leone PE,Pérez-Villa A,Yumiceba V,Zambrano AK,Guerrero S,Paz-Y-Miño Cdoi
10.3390/genes11070834subject
Has Abstractpub_date
2020-07-21 00:00:00issue
7issn
2073-4425pii
genes11070834journal_volume
11pub_type
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