COMBINATION THERAPY OF CISPLATIN AND NANOCURCUMIN REDUCES PI3K EXPRESSION AND PROLIFERATION OF HeLa CELLS
Abstract
Kanker serviks merupakan salah satu penyebab utama kematian akibat kanker pada wanita, terutama di negara berkembang. Cisplatin adalah obat kemoterapi yang umum digunakan, tetapi penggunaannya dalam dosis tinggi sering menyebabkan efek samping toksik seperti kerusakan ginjal (nefrotoksisitas), yang dapat terjadi pada 25–33% pasien pada dosis 75–100 mg/m². Untuk mengurangi toksisitas dan meningkatkan efektivitas terapi, kombinasi cisplatin dengan senyawa alami seperti nanokurkumin mulai dikembangkan. Penelitian ini bertujuan untuk mengevaluasi potensi kombinasi cisplatin dan nanokurkumin dalam menghambat proliferasi dan menurunkan ekspresi PI3K pada sel kanker serviks HeLa. Penelitian ini menggunakan desain eksperimental dengan post-test only control group. Sel HeLa diberi perlakuan cisplatin (2,5 dan 5 µg/mL), nanokurkumin (100 µg/mL), serta kombinasi cisplatin 2,5 µg/mL dengan nanokurkumin (25, 50, dan 100 µg/mL). Evaluasi mencakup morfologi sel, uji viabilitas menggunakan CCK-8, dan analisis ekspresi PI3K menggunakan flow cytometry. Analisis statistik dilakukan dengan uji Kruskal-Wallis, dilanjutkan uji post hoc Dunn, dengan nilai signifikansi p < 0,05. Hasil menunjukkan bahwa kombinasi cisplatin 2,5 µg/mL dan nanokurkumin 100 µg/mL secara signifikan menurunkan viabilitas sel dibandingkan cisplatin 2,5 µg/mL saja (p = 0,035), serta memiliki efektivitas yang sebanding dengan cisplatin 5 µg/mL (p = 0,553). Penurunan ekspresi PI3K juga signifikan dibandingkan kontrol negatif (p = 0,000), cisplatin 2,5 µg/mL (p = 0,006), dan cisplatin 5 µg/mL (p = 0,010). Hasil ini menunjukkan bahwa kombinasi cisplatin dan nanokurkumin berpotensi sebagai terapi kanker serviks yang efektif.
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