Abstract:
:Relapse remains one of the major obstacles in Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ALL) even after allogeneic hematopoietic stem cell transplantation. The persistence of leukemia-propagating cells (LPCs) may lead to the recurrence of Ph+ALL. Using a xenograft assay, LPCs enrichment in the CD34+CD38-CD58- fraction in Ph+ALL was recently identified. A further cohort study indicated that the LPCs phenotype at diagnosis was an independent risk factor for relapse of Ph+ALL. However, little is known about the potential molecular mechanism of LPCs-mediated relapse. Therefore, the gene expression profiles of the sorted LPCs and other cell fractions from patients with de novo Ph+ALL were investigated using RNA sequencing (RNA-Seq). Most of the differentially expressed genes between the LPCs and other cell fractions were related to the regulation of the cell cycle and metabolism, as identified by the gene ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses. Consistent with the RNA-Seq results, the mRNA levels of cell cycle-related genes, such as cyclin-dependent kinase 4, were significantly lower in the LPCs fraction than in other cell fractions. Moreover, the proportion of quiescent cells in LPCs was significantly higher than in other cell fractions. In summary, distinctive gene expression profiles and clusters, which were mostly related to the regulation of the cell cycle and metabolism, were demonstrated between LPCs and other cell fractions from patients with de novo Ph+ALL. Therefore, it would be beneficial to develop novel LPCs-based therapeutic strategies for Ph+ALL patients.
journal_name
Ann Hematoljournal_title
Annals of hematologyauthors
Zhao HY,Song Y,Cao XN,Qin YZ,Lai YY,Jiang H,Jiang Q,Huang XJ,Kong Ydoi
10.1007/s00277-018-3253-5subject
Has Abstractpub_date
2018-05-01 00:00:00pages
799-811issue
5eissn
0939-5555issn
1432-0584pii
10.1007/s00277-018-3253-5journal_volume
97pub_type
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