Sains
Malaysiana 46(4)(2017): 575–581
http://dx.doi.org/10.17576/jsm-2017-4604-09
Low Intensity Ultrasound Induced
Apoptosis in MCF-7 Breast Cancer Cell Lines
(Ultrabunyi
Keamatan Rendah Aruhan Apoptosis dalam Jujukan Sel Kanser Payudara
MCF-7)
SITI
P.M.
BOHARI*,
HAMIDREZA
ABOULKHEYR,
E.S.,
NUR
S.
JOHAN
& NURSYUHADA
F.
ZAINUDIN
Faculty of Biosciences
and Biomedical Engineering, Universiti Teknologi Malaysia
81310 UTM Skudai, Johor
Darul Takzim, Malaysia
Diserahkan: 26 November
2015/Diterima: 29 September 2016
ABSTRACT
According
to the World Cancer Research Fund International (WCRFI),
breast cancer is the most common type of cancer in women worldwide
with recorded 1.7 million new cases in 2012. The main line of treatments
is still limited to chemotherapy, surgery and radiotherapy which
could lead to a wide range of dangerous side effects. This study
was conducted to evaluate the effect of low intensity ultrasound
(LIUS) on cell proliferation, percentage
of living and dead cells and the induction of apoptosis on the MCF-7
cell line with CHO cells as the control for non-cancerous
group. In order to achieve the objective of this study, several
methods of cell-bioguided assays were used including the MTT assay
for cell proliferation, Live/Dead assay for the determination of
both live and dead cells and gene expression study for the detection
of apoptosis in the cells. The cytotoxicity and Live/Dead assays
data provided preliminary data that the LIUS has potential to induce apoptosis in a wide population
of breast cancer cells. Furthermore, the LIUS treatment
induced the expression of p53-mRNA at a detectable level via
qPCR
analysis, indicating the activation of apoptosis.
In short, our study suggested LIUS
dosage used in this study could potentially show positive
effects in the induction of apoptosis selectively on the MCF-7
with less harm to the control CHO cells.
Keywords:
Apoptosis; CHO cells; LIUS; MCF-7
cells; qPCR
ABSTRAK
Mengikut ‘World
Cancer Research Fund International’ (WCRFI),
kanser payudara adalah jenis kanser yang paling umum pada wanita
di seluruh dunia dengan catatan rekod 1.7 juta kes baru pada 2012.
Rawatan utama masih lagi terhad kepada kimoterapi, pembedahan dan
radioterapi yang boleh membawa kepada pelbagai kesan sampingan berbahaya.
Penyelidikan ini dijalankan untuk menilai kesan ultrabunyi berkeamatan
rendah (LIUS)
pada pertumbuhan sel, peratusan hidup dan mati sel dan juga pengaruhan
‘apoptosis’ pada jujukan sel MCF-7 dan CHO sebagai
kumpulan kawalan sel bukan kanser. Untuk mencapai objektif di dalam
kajian ini, beberapa kaedah bioasai berdasarkan sel telah digunakan
termasuklah asai MTT
untuk pertumbuhan sel, asai ‘Live/Dead’ untuk pengenalpastian
hidup dan mati sel dan juga kajian ekspresi gen untuk pengesanan
‘apoptosis’ pada sel. Asai sitotoksiti dan ‘Live/Dead’ menggambarkan
data awal bahawa LIUS berpotensi
untuk mengaruh ‘apoptosis’ di dalam populasi yang besar bagi kanser
payudara. Tambahan lagi, rawatan LIUS juga berpotensi untuk mengaruh ekspresi
p53-mRNA pada aras yang dapat dikesan melalui analisis qPCR
yang menunjukkan pengaktifan ‘apoptosis. Kesimpulannya,
kajian kami mencadangkan dos LIUS
yang digunakan dalam kajian ini berpotensi dalam menunjukkan
kesan positif dalam pengaruhan ‘apoptosis’ pilihan pada sel MCF-7
dengan sedikit kemudaratan kepada sel CHO.
Kata kunci: Apoptosis; LIUS; qPCR;
sel CHO; sel MCF-7
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*Pengarang untuk surat-menyurat;
email: pauliena@utm.my
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