Molecular and Cellular Biochemistry

, Volume 308, Issue 1, pp 17–24

Effect of all trans retinoic acid on lysosomal α-d-mannosidase activity in Hl-60 cell: correlation with Hl-60 cells differentiation

  • Leda Racanicchi
  • Pia Montanucci
  • Giuseppe P. P. Basta
  • Alessandra Pensato
  • Valentina Conti
  • Riccardo Calafiore
Article

DOI: 10.1007/s11010-007-9606-3

Cite this article as:
Racanicchi, L., Montanucci, P., Basta, G.P.P. et al. Mol Cell Biochem (2008) 308: 17. doi:10.1007/s11010-007-9606-3

Abstract

Human promyelocytic leukemia HL-60 cells represent an in vitro model of acute promyelocytic leukemia (APL), and are inducible to terminally differentiate into morphologically mature granulocytes by incubation with all trans retinoic acid (ATRA). Lysosomal glycohydrolases are involved in the changes of the membrane surface proteins’ glycosylation, linked to the metastatic progression potential of neoplastic cells. In particular, it has been demonstrated that the Asn-linked glucidic residues were directly responsible for the metastatic potential, and it is known that the glycohydrolase α-d-mannosidase specifically hydrolyze the Asn-linked oligosaccharides. In this report, we present an in vitro study on the ATRA effects on lysosomal glycohydrolases expression and the eventual relationship with the retinoic acid-induced differentiation of HL-60 cells. We have investigated two highly expressed lysosomal glycohydrolases, namely β-d-hexosaminidase and α-d-mannosidase, and showed that they were differently affected by ATRA differentiating action. In particular, due to the specific action on Asn-linked oligosaccharides, we tested α-d-mannosidase enzymatic activity and observed that it was dramatically decreased after ATRA incubation, indicating a relationship with the differentiation state of the cells. These observations may directly be linked with the loss of metastatic progession of differentiated HL-60.

Keywords

HL-60 cells Acute promyelocitic leukemia Glycohydrolases Retinoic acid 

Abbreviations

APL

Acute promyelocitic leukemia

ATRA

All trans retinoic acid

RARα

Retinoic acid receptor α

4-MU αMan

4-Methylumbelliferyl-α-d-mannoside

4MU-GlcNAc

4-Methylumbelliferyl-β-N-acetylglucosaminide

Copyright information

© Springer Science+Business Media, LLC. 2007

Authors and Affiliations

  • Leda Racanicchi
    • 1
  • Pia Montanucci
    • 1
  • Giuseppe P. P. Basta
    • 1
  • Alessandra Pensato
    • 1
  • Valentina Conti
    • 1
  • Riccardo Calafiore
    • 1
  1. 1.Department of Internal Medicine (Di.M.I.), Section of Internal Medicine and Endocrine and Metabolic SciencesUniversity of PerugiaPerugiaItaly

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