Nazmiye BİTGEN, Münevver BARAN, Gözde Özge ÖNDER, Pınar ALİŞAN SUNA, Perihan GÜRBÜZ, Arzu YAY

Melissa officinalis L. bitkisinin apoptoz ve otofaji yoluyla insan meme kanser hücre hattı üzerine etkisi

Amaç: Bu araştırmanın amacı, Melissa officinalis L. bitkisinin in vitro olarak MCF-7 meme kanseri hücrelerindeki ölüm yollarını nasıl etkilediğini görmektir. Gereç ve Yöntem: Melissa officinalis bitkisinin topraküstü kısımlarından hazırlanan %70 metanolik ekstrenin sitotoksik aktivitesi ve IC50 değerini belirlemek için MCF-7 meme kanseri hücre hattı farklı konsantrasyonlar da ve sürelerde Melissa officinalis’ e maruz bırakılarak MTT analizi yapıldı. Melissa officinalis' in belirlenen IC50 dozunda meme kanseri hücreleri üzerindeki apoptotik etkileri TUNEL yöntemi ile, otofajik etkileri Beclin-1 ve LC3 immünofloresan boyama yöntemi kullanılarak ortaya çıkarıldı. Bulgular: Melissa officinalis’ in, MCF-7 meme kanseri hücreleri üzerindeki etkileri değerlendirildiğinde, MCF-7 meme kanseri hücre hattındaki hücre canlılığını doza ve zamana bağlı bir şekilde azalttığı görüldü. Bunun yanı sıra, apopitozu indüklediği ve otofaji belirteçleri olan Beclin-1 ve LC3 immunreaktivitesini de artırdığı gözlendi. Sonuç: Çalışmadan elde edilen bulgular, Melissa officinalis’in hem apoptoz hem de otofaji hücre ölümü yolları üzerinden MCF-7 meme kanseri hücreleri üzerinde sitotoksik bir etkiye sahip olduğunu göstermiştir. Bu veriler, antitümör etki mekanizmasını aydınlatmak için gerekli olan daha ileri in vitro çalışmalara öncülük edecektir.

Effect of Melissa officinalis L. on human breast cancer cell line via apoptosis and autophagy

Purpose: The aim of this research is to see how Melissa officinalis L. affects the death pathways of MCF-7 breast cancer cells in vitro. Materials and Methods: In order to determine the cytotoxic activity and IC50 value of the 70% methanolic extract prepared from the aerial parts of Melissa officinalis, on the MCF-7 breast cancer cell line; the extract was applied at different concentrations and times and MTT analysis was performed. Apoptotic effects of Melissa officinalis on breast cancer cells at the determined IC50 dose were revealed by TUNEL method, and autophagic effects were revealed using Beclin-1 and LC3 immunofluorescence staining method. Results: When the effects of Melissa officinalis on MCF-7 breast cancer cells were evaluated, it was observed that the cell viability of the MCF-7 breast cancer cell line was decreased in a dose- and time-dependent manner. In addition, it was observed that it induced apoptosis and increased the immunoreactivity of autophagy markers Beclin-1 and LC3. Conclusion: Findings from the study showed that Melissa officinalis has a cytotoxic effect on MCF-7 breast cancer cells through both apoptosis and autophagy cell death pathways. These data will lead to further in vitro studies necessary to elucidate the antitumor mechanism of action.

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