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α-Mangostin from Cratoxylum arborescens demonstrates apoptogenesis in MCF-7 with regulation of NF-κB and Hsp70 protein modulation in vitro, and tumor reduction in vivo

Authors Ibrahim MY, Hashim NM, Mohan S, Abdulla MA, Kamalidehghan B, Ghaderian M, Dehghan F, Ali LZ, Arbab IA, Yahayu M, Lian GE, Ahmadipour F, Ali HM

Received 13 April 2014

Accepted for publication 20 June 2014

Published 27 September 2014 Volume 2014:8 Pages 1629—1647

DOI https://doi.org/10.2147/DDDT.S66105

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 7

Mohamed Yousif Ibrahim,1 Najihah Mohd Hashim,1 Syam Mohan,2 Mahmood Ameen Abdulla,3 Behnam Kamalidehghan,1 Mostafa Ghaderian,1,4 Firouzeh Dehghan,1,5 Landa Zeenelabdin Ali,1 Ismail Adam Arbab,6 Maizatulakmal Yahayu,7 Gwendoline Ee Cheng Lian,8 Fatemeh Ahmadipour,1 Hapipah Mohd Ali9

1Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia; 2Medical Research Centre, Jazan University, Jazan, Saudi Arabia; 3Department of Molecular Medicine, Faculty of Medicine University of Malaya, Kuala Lumpur, Malaysia; 4Epigenetics Lab, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia; 5Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia; 6School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor, Malaysia; 7Department of Bioproduct Research and Innovation, Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia, Johor, Malaysia; 8Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Selangor, Malaysia; 9Department of Chemistry, University of Malaya, Kuala Lumpur, Malaysia

Abstract: Cratoxylum arborescens is an equatorial plant belonging to the family Guttiferae. In the current study, α-Mangostin (AM) was isolated and its cell death mechanism was studied. HCS was undertaken to detect the nuclear condensation, mitochondrial membrane potential, cell permeability, and the release of cytochrome c. An investigation for reactive oxygen species formation was conducted using fluorescent analysis. To determine the mechanism of cell death, human apoptosis proteome profiler assay was conducted. In addition, using immunofluorescence and immunoblotting, the levels of Bcl-2-associated X protein (Bax) and B-cell lymphoma (Bcl)-2 proteins were also tested. Caspaces such as 3/7, 8, and 9 were assessed during treatment. Using HCS and Western blot, the contribution of nuclear factor kappa-B (NF-κB) was investigated. AM had showed a selective cytotoxicity toward the cancer cells with no toxicity toward the normal cells even at 30 µg/mL, thereby indicating that AM has the attributes to induce cell death in tumor cells. The treatment of MCF-7 cells with AM prompted apoptosis with cell death-transducing signals. This regulated the mitochondrial membrane potential by down-regulation of Bcl-2 and up-regulation of Bax, thereby causing the release of cytochrome c from the mitochondria into the cytosol. The liberation of cytochrome c activated caspace-9, which, in turn, activated the downstream executioner caspace-3/7 with the cleaved poly (ADP-ribose) polymerase protein, thereby leading to apoptotic alterations. Increase of caspace 8 had showed the involvement of an extrinsic pathway. This type of apoptosis was suggested to occur through both extrinsic and intrinsic pathways and prevention of translocation of NF-κB from the cytoplasm to the nucleus. Our results revealed AM prompt apoptosis of MCF-7 cells through NF-κB, Bax/Bcl-2 and heat shock protein 70 modulation with the contribution of caspaces. Moreover, ingestion of AM at (30 and 60 mg/kg) significantly reduced tumor size in an animal model of breast cancer. Our results suggest that AM is a potentially useful agent for the treatment of breast cancer.

Keywords: α-Mangostin, apoptosis, mitochondria, protein array, caspace 3/7, NF-κB

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Other articles by this author:

Involvement of NF-κB and HSP70 signaling pathways in the apoptosis of MDA-MB-231 cells induced by a prenylated xanthone compound, α-mangostin, from Cratoxylum arborescens [Corrigendum]

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Drug Design, Development and Therapy 2015, 9:3001-3002

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Involvement of NF-ΚB and HSP70 signaling pathways in the apoptosis of MDA-MB-231 cells induced by a prenylated xanthone compound, α-mangostin, from Cratoxylum arborescens

Ibrahim MY, Hashim NM, Mohan S, Abdulla MA, Abdelwahab SI, Kamalidehghan B, Ghaderian M, Dehghan F, Ali LZ, Karimian H, Yahayu M, Ee GCL, Farjam AS, Ali HM

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