Synthesis and characterization of novel ceramide analogs for induction of apoptosis in human cancer cells

Erhard Bieberich, Bin Hu, Maria J Silva, Sarah MacKinnon, Robert K Yu, Helen Fillmore, William C. Broaddus, Raphael M. Ottenbrite

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

A variety of anti-cancer drugs elevate endogenous ceramide, thereby inducing apoptosis in tumor cells. Recently, we have introduced novel ceramide analogs of the β-hydroxy alkyl amide type, which trigger pro-apoptotic signaling pathways without prior elevation of endogenous ceramide. They induce apoptosis specifically in rapidly dividing neuroblastoma cells, but not in resting or differentiated cells. We characterize new ceramide mimics that have been derived from N-acylation of serinol (S), diethanolamine (B), propanolamine (P), and tris(hydroxy-methyl)methylamine (T) with myristic (14), palmitic (16), or oleic (18) acid. The water solubility of these compounds exceeds that of ceramide by more than 100-fold (up to 5mM). Apoptosis of human neuroblastoma, glioma, medulloblastoma, and adenocarcinoma cells is induced by N-(2-hydroxy-1-(hydroxymethyl)ethyl)-palmitoylamide, C16-serinol (S16), N-(2-hydroxy-1-(hydroxymethyl)ethyl)-oleoylamide, C18-serinol (S18), N-bis(2-hydroxyethyl)-myristoyl-amide (B16), and N-tris(hydroxymethyl)methyl-oleoylamide (T18) within 60min of incubation, and is completed even after removal of the compound from the medium. This is most likely due to a rapid uptake of the analogs followed by their slow release from the cells. Alteration of the acyl chain length to less than 14 methylene units, removal of the amino group, or reducing the number of hydroxyalkyl residues to less than two significantly lowers or eliminates the pro-apoptotic potential of these compounds. The target specificity of novel ceramide analogs for tumor cells, their water solubility, and fast pro-apoptotic mechanism indicates a high therapeutic potential for cancer treatment.

Original languageEnglish (US)
Pages (from-to)55-64
Number of pages10
JournalCancer Letters
Volume181
Issue number1
DOIs
StatePublished - Jul 8 2002

Fingerprint

Ceramides
Apoptosis
Neoplasms
diethanolamine
Neuroblastoma
Amides
Solubility
Propanolamines
Medulloblastoma
Acylation
Water
Oleic Acid
Glioma
Adenocarcinoma
Pharmaceutical Preparations
serinol

Keywords

  • Apoptosis
  • Cancer
  • Ceramide
  • Chemotherapy

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Cite this

Synthesis and characterization of novel ceramide analogs for induction of apoptosis in human cancer cells. / Bieberich, Erhard; Hu, Bin; Silva, Maria J; MacKinnon, Sarah; Yu, Robert K; Fillmore, Helen; Broaddus, William C.; Ottenbrite, Raphael M.

In: Cancer Letters, Vol. 181, No. 1, 08.07.2002, p. 55-64.

Research output: Contribution to journalArticle

Bieberich, Erhard ; Hu, Bin ; Silva, Maria J ; MacKinnon, Sarah ; Yu, Robert K ; Fillmore, Helen ; Broaddus, William C. ; Ottenbrite, Raphael M. / Synthesis and characterization of novel ceramide analogs for induction of apoptosis in human cancer cells. In: Cancer Letters. 2002 ; Vol. 181, No. 1. pp. 55-64.
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