ANTIPROLIFERATIVE AND APOPTOTIC EFFECTS OF THE ESSENTIAL OIL OF ORIGANUM ONITES AND CARVACROL ON HEP-G2 CELLS

Öz

The essential oil Origanum onites L. and its phenolic constituent carvacrol were examined for their cytotoxic and apoptotic effects in a human hepatocellular carcinoma cells Hep-G2. WST-1 and neutral red uptake assays were performed to determine the inhibitory effects of the oil and carvacrol on the growth of the cells. Possible induction of apoptosis by Origanum oil and carvacrol was further investigated by acridine orange/ethidium bromide (AO/EB) staining. Results showed that the Origanum oil and carvacrol was significantly cytotoxic and induced apoptosis in Hep-G2 cells. IC50 value of essential oil and carvacrol was found about 0,009% (v/v) and 500 μM, respectively. After incubation of the cells with Origanum oil and carvacrol, characteristics of apoptotic morphology such as chromatin condensation, shrinkage of the cells and cytoplasmic blebbing was observed. In conclusion, both essential oil and its major constituent carvacrol significantly exhibited cytotoxic and apoptotic
activities in hepatocellular carcinoma cells, indicating its potential for use as an anticancer agent.

Anahtar Kelimeler

• -

Yaşam Bilimleri ve Biyoteknoloji

Öz

Origanum onites L. uçucu yağı ve onun fenolik bileşeni olan karvakrolün insan kanserli karaciğer hücreleri Hep-G2 üzerindeki sitotoksik ve apoptotik etkileri çalışılmıştır. Hücrelerin çoğalması üzerine origanum uçucu yağının ve karvakrolün engelleyici etkilerini belirlemek için WST-1 ve nötral kırmızısı alım yöntemleri uygulanmıştır. Origanum yağı ve karvakrolün olası apoptotik etkisi akridinoranj/etidyumbromür (AO/EB) boyama yöntemiyle araştırılmıştır. Sonuçlar değerlendirildiğinde, Origanum yağı ve karvakrolün Hep-G2 hücrelerinde anlamlı derecede sitotoksik etkiye sahip olduğu ve bu hücrelerde apoptozu uyardığı gözlenmiştir. Uçucu yağın IC50 değeri % 0.009, karvakrolün 500 mM olarak belirlenmiştir. Origanum uçucu yağı ve karvakrol ile inkübasyonun ardından hücrelerin kromatin yoğunlaşması, hücre büzülmesi, sitoplazmik keselerin oluşumu gibi karakteristik apoptoz morfolojisi gösterdiği belirlenmiştir. Sonuç olarak, hem Origanum uçucu yağı hem de onun temel bileşeni olan karvakrol, insan kanserli karaciğer hücrelerinde anlamlı bir sitotoksik etki ve apoptotik aktivite sergilemiştir ve bu özelliklerinden dolayı, her ikisi de antikanser ajan olarak kullanılabilme potansiyeline sahiptir

Anahtar Kelimeler

• Origanum yağı, Karvakrol, Apoptoz, Sitotoksisite, Hep-G2

Kaynakça

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