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All Journal Indonesian Journal of Cancer Chemoprevention Mutiara Medika: Jurnal Kedokteran dan Kesehatan BERDIKARI : Jurnal Inovasi dan Penerapan Ipteks
Rifki Febriansah
Program Studi Farmasi, Fakultas Kedokteran dan Ilmu Kesehatan, Universitas Muhammadiyah Yogyakarta
Biochemistry, Genetics & Molecular Biology Computer Science & IT Education Health Professions Medicine & Pharmacology

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Journal : Indonesian Journal of Cancer Chemoprevention

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MCF-7 Resistant Doxorubicin are Characterized by Lamelapodia, Strong Adhesion on Substrate and P-gp Overexpression Putri, Dyaningtyas Dewi P.; Sarmoko, .; Febriansah, Rifki; Puspitasari, Endah; Ismiyati, Nur; Fitriasari, Aditya
Indonesian Journal of Cancer Chemoprevention Vol 2, No 3 (2011)
Publisher : Indonesian Research Gateway

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Abstract

The  prognosis  of  breast  cancer  patients  is  closely  associated  with  the  response  of tumor  cells  to  chemotherapy  agent.  Doxorubicin  is  one  of  the  primary  chemotherapeutic agents  used  for  the  treatment  of  breast  cancer.  Resistance  to  chemotherapy  is  believed  to cause  treatment  failure  in  cancer  patients.  Furthermore,  long  time  exposure  to chemotherapeutic  agent  induces  cancer  cells  resistance.  MCF-7  sensitive  cells  used  as chemoresistance  model  have  overexpression  P-gp  (P-glycoprotein).  Chemoresistance  was established by treating MCF-7 cells with 0.5 µg/ml doxorubicin-contained medium for a week. 50% inhibiting concentration (IC50) doxorubicin on MCF-7 cells/DOX were determined using MTT assay. Western blot assay and immunocytochemistry assay was performed to determine the expression of P-gp. Morphological of MCF-7 cell/DOX was changing to become larger and have  lamellapodia.  IC50  value  of  doxorubicin  was  700  nM  on  MCF-7/DOX  and  400  nM  on sensitive MCF-7 cells. The MCF-7/DOX sensitivity to doxorubicin was decreased, shown by 1.5  fold  higher  IC50  of  doxorubicin  on  MCF-7/DOX  compared  to  MCF-7  sensitive  cells. Treatment doxorubicin to sensitive MCF-7 cells leads to the increasing P-gp expression. The P-gp  level  expression  has  strong  correlation  with  the  low  sensitivity  of  MCF-7/DOX  to doxorubicin.Key words: doxorubicin, resistance cells, sensitive MCF-7 cell
Co-Authors Aditya Fitriasari Desy Bintang, Desy Dita Prabaningrum, Dita Dwi Susilo Hardika, Dwi Susilo Dyaningtyas Dewi P. Putri Dzilqi Bustanul Hadi, Dzilqi Bustanul Endah Puspitasari Masitha, Fatma Sari Nur Ismiyati Nur Oktafiyani, Nur Sarmoko Sarmoko