PENGARUH EKSTRAK ETHANOL PROPOLIS TERHADAP KSPRESI PROTEIN CASPASE 8, APOPTOSIS, DAN PROLIFERASI PADA KULTUR SEL ADENOKARSINOMA KOLON (WiDr)

Gigih Rahmadanu P, Paulus Kusnanto, Bambang Purwanto

DOI: https://doi.org/10.23917/biomedika.v10i1.5856

Abstract

Kanker kolorektal merupakan kanker terbanyak ketiga pada pria, kedua pada wanita, dan menjadi penyebab kematian keempat, sekitar 8% dari penyebab kematian karena kanker. Sebagian besar pasien kanker kolorektal didiagnosis dalam stadium yang sudah tidak dapat dioperasi. Propolis diketahui memiliki aktivitas anti kanker. Mekanisme anti kanker propolis melalui induksi apoptosis dan juga melalui penghambatan proliferasi dalam siklus sel. Penelitian ini bertujuan untuk mengkaji efek anti kanker ekstrak ethanol propolis (EEP) yang berasal dari Kerjo, Karanganyar, Indonesia pada kultur sel adenokarsinoma kolorektal (cell line WiDr) melalui pengaruhnya terhadap ekspresi protein Caspase 8, apoptosis dan proliferasi sel. Penelitian ini merupakan penelitian experimental laboratories, post test with control group design. Penelitian dilakukan pada kultur sel WiDr dengan perlakuan pemberian dosis ekstrak ethanol propolis, kontrol positif (5-FU), kombinasi ekstrak ethanol propolis dengan 5-FU, dan kontrol negatif (tanpa obat). Pengamatan ekspresi protein Caspase 8 dilakukan dengan metode imunositokimia, pengamatan apoptosis dilakukan dengan double staining menggunakan pewarnaan akridin oranye–etidium bromide, sedangkan pengamatan proliferasi menggunakan MTT assay dengan doubling time. Hasil Penelitian menunjukkan bahwa EEP cenderung menekan viabilitas sel WiDr dengan IC sebesar 140 µg/mL. EEP konsentrasi 70,140, 280 µg/mL mampu meningkatkan ekspresi protein Caspase 8 dan menginduksi apoptosis yang sebanding dengan peningkatan konsentrasi yang diberikan. EEP konsentrasi 70 µg/mL dapat menghambat proliferasi sel sebanding dengan EEP konsentrasi 140 dan 280 µg/Ml. Penelitian ini menunjukkan EEP mampu menekan viabilitas sel WiDr. Aktivitas ini kemungkinan terkait dengan kemampuannya dalam meningkatkan ekspresi protein Caspase 8 dan apoptosis sebanding dengan peningkatan konsentrasi yang diberikan. EEP pada konsentrasi terkecil yang diuji (70 µg/mL) mampu menghambat proliferasi pada sel WiDr sebanding dengan dosis yang lebih tinggi.

 

Kata kunci: EEP, Caspase 8, apoptosis, proliferasi, cell line WiDr

 

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