Induction of apoptosis by Eleutherine bulbosa (Mill.) Urb. bulb extracted under optimised extraction condition on human retinoblastoma cancer cells (WERI-Rb-1)

Kamarudin AA 1 , Sayuti NH 2 , Saad N 3 , Razak NAA 4 , Esa NM 5

Affiliations 

  • 1 Natural Medicines and Product Research Laboratory (NaturMeds), Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. Electronic address: [email protected]
  • 2 Natural Medicines and Product Research Laboratory (NaturMeds), Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. Electronic address: [email protected]
  • 3 UPM-MAKNA Cancer Research Laboratory (CANRES), Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. Electronic address: [email protected]
  • 4 Natural Medicines and Product Research Laboratory (NaturMeds), Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. Electronic address: [email protected]
  • 5 Natural Medicines and Product Research Laboratory (NaturMeds), Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Department of Nutrition, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. Electronic address: [email protected]
J Ethnopharmacol, 2021 Oct 21;284:114770.
PMID: 34688803 DOI: 10.1016/j.jep.2021.114770

Abstract

ETHNOPHARMACOLOGICAL RELEVANCE: The bulb of Eleutherine bulbosa (Mill.) Urb. is an indigenous medicinal plant traditionally used among Dayak people for the management of diabetes, breast cancer, hypertension, stroke, and fertility problems in women. The bulb has been reported with a potent cytotoxic potential but with limited underlying mechanisms.

AIM OF THE STUDY: This study aimed to investigate the cytotoxic properties of E. bulbosa ethanolic bulb extracted under optimised extraction condition on retinoblastoma cancer cells (WERI-Rb-1) through in vitro cell culture bioassays. The optimised extraction condition has been determined in the previous reports.

MATERIALS AND METHODS: Cytotoxic assay was analysed through MTT assay. Comparison between non-optimised and optimised extraction condition from E. bulbosa ethanolic bulb extract was evaluated. Morphological assessment of apoptotic cells was conducted through acridine orange propidium iodide (AOPI) staining using fluorescence microscopy. Apoptosis assay was carried out through Annexin V-FITC and cell cycle analysis through PI staining. The effect of varying concentrations (IC25, IC50, IC75) of the optimised E. bulbosa ethanolic bulb extract was observed. The mRNA expression was also conducted to confirm the underlying mechanism.

RESULTS: The optimised E. bulbosa ethanolic bulb extract markedly suppressed the proliferation of retinoblastoma cancer cells significantly with an IC50 value of 15.7 μg/mL as compared to non-optimised extract (p 

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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