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MiR-125b, miR-100 and miR-99a co-regulate vincristine resistance in childhood acute lymphoblastic leukemia

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)

Abstract

MicroRNA-125b (miR-125b), miR-99a and miR-100 are overexpressed in vincristine-resistant acute lymphoblastic leukemia (ALL). Cellular viability of ETV6-RUNX1-positive Reh cells significantly increased in presence of 9 ng/mL vincristine upon co-expression of miR-125b/miR-99a (91 ± 4%), miR-125b/miR-100 (93 ± 5%) or miR-125b/miR-99a/miR-100 (82 ± 17%) compared with miR-125b-transduced cells (38 ± 13%, P<0.05). Co-expression of these miRNAs resulted in downregulation of DNTT, NUCKS1, MALAT1, SNRPE, PNO1, SET, KIF5B, PRPS2, RPS11, RPL38 and RPL23A (fold-change 1.3-1.9, p<0.05). Similarly, 7 out of these genes are lower expressed in vincristine-resistant ALL cells of children (p<0.05). The concerted function of miR-125b in combination with miR-99a and/or miR-100 illustrates the complexity of vincristine-resistant pediatric ALL.

Original languageEnglish
Pages (from-to)1315-21
Number of pages7
JournalLeukemia research
Volume37
Issue number10
DOIs
Publication statusPublished - Oct 2013
Externally publishedYes

Keywords

  • Antineoplastic Agents, Phytogenic/pharmacology
  • Base Sequence
  • Child
  • Child, Preschool
  • Drug Resistance, Neoplasm/genetics
  • Gene Expression
  • Gene Expression Regulation, Leukemic
  • Gene Order
  • Humans
  • MicroRNAs/genetics
  • Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug therapy
  • Vincristine/pharmacology

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