The alkaloid sanguinarine is effective against multidrug resistance in human cervical cells via bimodal cell death

Zhihu Ding, Shou-Ching Tang, Priya Weerasinghe, Xiaolong Yang, Alan Pater, Andrejs Liepins

Research output: Contribution to journalArticle

80 Citations (Scopus)

Abstract

Sanguinarine, a benzophenanthrine alkaloid, is potentially antineoplastic through induction of cell death pathways. The development of multidrug resistance (MDR) is a major obstacle to the success of chemotherapeutic agents. The aim of this study was to investigate whether sanguinarine is effective against uterine cervical MDR and, if so, by which mechanism. The effects of treatment with sanguinarine on human papillomavirus (HPV) type 16-immortalized endocervical cells and their MDR counterpart cells were compared. Trypan blue exclusion assays and clonogenic survival assays demonstrated that MDR human cervical cells are as sensitive as their drug-sensitive parental cells to death induced by sanguinarine. Upon treatment of both types of cells with sanguinarine, two distinct concentration-dependent modes of cell death were observed. Treatment with 2.12 or 4.24μM sanguinarine induced death in most cells that was characterized as apoptosis using the criteria of cell surface blebbing, as determined by light and scanning electron microscopy, and proteolytic activation of caspase-3 and cleavage of the caspase-3 substrate poly(ADP-ribose) polymerase (PARP), as detected by Western blot analysis. However, 8.48 and 16.96μM sanguinarine caused a second mode of cell death, oncosis, distinguished by cell surface blistering, and neither caspase-3 activation nor PARP cleavage. This study provides the first evidence that sanguinarine is effective against MDR in cervical cells via bimodal cell death, which displays alternative mechanisms involving different morphologies and caspase-3 activation status.

Original languageEnglish (US)
Pages (from-to)1415-1421
Number of pages7
JournalBiochemical Pharmacology
Volume63
Issue number8
DOIs
StatePublished - Apr 15 2002

Fingerprint

Multiple Drug Resistance
Cell death
Alkaloids
Cell Death
Caspase 3
Poly(ADP-ribose) Polymerases
Chemical activation
Assays
Human papillomavirus 16
Trypan Blue
sanguinarine
Blister
Antineoplastic Agents
Electron Scanning Microscopy
Western Blotting
Apoptosis
Light
Scanning electron microscopy
Survival
Substrates

Keywords

  • Alkaloid sanguinarine
  • Apoptosis
  • Caspase-3
  • Multidrug-resistant cervical cells
  • Oncosis

ASJC Scopus subject areas

  • Biochemistry
  • Pharmacology

Cite this

The alkaloid sanguinarine is effective against multidrug resistance in human cervical cells via bimodal cell death. / Ding, Zhihu; Tang, Shou-Ching; Weerasinghe, Priya; Yang, Xiaolong; Pater, Alan; Liepins, Andrejs.

In: Biochemical Pharmacology, Vol. 63, No. 8, 15.04.2002, p. 1415-1421.

Research output: Contribution to journalArticle

Ding, Zhihu ; Tang, Shou-Ching ; Weerasinghe, Priya ; Yang, Xiaolong ; Pater, Alan ; Liepins, Andrejs. / The alkaloid sanguinarine is effective against multidrug resistance in human cervical cells via bimodal cell death. In: Biochemical Pharmacology. 2002 ; Vol. 63, No. 8. pp. 1415-1421.
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