title: Effect of Neem Leaf Extract (Azadirachta indica) on c-Myc Oncogene Expression in 4T1 Breast Cancer Cells of BALB/c Mice.
abstract: OBJECTIVE
  Breast cancer is the most common cause of cancer-related deaths in women both worldwide and in Malaysia. Azadirachta indica (A. Juss), commonly known as neem, is one of the most versatile medicinal plants that has gained worldwide prominence due to its medicinal properties. However, the anticancer effect of ethanolic neem leaf extract against breast cancer has not been documented. The purpose of the present study is to investigate the effect of neem leaf extract on c-Myc oncogene expression in 4T1 breast cancer BALB/c mice.
  
  
  METHODS
  In this experimental study, A total of 48 female BALB/c mice were divided randomly into four groups of 12 mice per group: i.cancer control (CC) treated with 0.5% Tween 20 in PBS, ii. 0.5 µg/mL tamoxifen citrate (CT), iii. 250 mg/kg neem leaf extract (C250), and iv. 500 mg/kg neem leaf extract (C500). in situ reverse transcription polymerase chain reaction (in situ RT-PCR) was applied to evaluate suppression of c-Myc oncogene expression in breast cancer tissue.
  
  
  RESULTS
  The C500 group showed significant (p<0.05) suppression of c-Myc oncogene expression compared to the CC group.
  
  
  CONCLUSIONS
  c-Myc was found to be down regulated under the effect of 500 mg/kg ethanolic neem leaf extract.
authors.affiliation: 1. Department of Human Anatomy, Faculty of Medicine and Health Sciences, University Putra Malaysia, Selangor, Malaysia.
authors.forename: Fauziah
authors.initials: F
authors.lastname: Othman
authors.forename: Gholamreza
authors.initials: G
authors.lastname: Motalleb
authors.forename: Sally
authors.initials: S
authors.lastname: Lam Tsuey Peng
authors.forename: Asmah
authors.initials: A
authors.lastname: Rahmat
authors.forename: Rusliza
authors.initials: R
authors.lastname: Basri
authors.forename: Chong
authors.initials: C
authors.lastname: Pei Pei
keywords: Breast Cancer; Primed in situ Labelling; c-Myc Gene