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Karaciğer kanseri kök hücre ksenograft modelinde sitotoksik aktiviteli yeni ilaç adaylarının etkilerinin belirlenmesi
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TVRZNU5UWTI.pdf
Date
2017
Author
Atalay, Rengül
Kahraman, Deniz Cansen
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Primer karaciğer kanseri (Hepatoselüler kanser, HSK) Dünya sağlık örgütü verilerine göre altıncı en sık görülen ve diğer kanser türleri arasında ölümcül olan ikinci kanser türüdür. Karaciğer kanserinin histolojik yapısı oldukça heterojendir. Sıklıkla siroz zemininde oluşan karaciğer kanseri, hepatik öncü hücre (Hepatic Progenitor Cells HPC) olarak adlandırılan hücrelerden kaynaklanmaktadır. Kök hücre belirteçlerini ve özelliklerini taşıyan bu hücreler, kronik hepatit ve siroz sürecinde uzun süreli hasara uğramış karaciğer hücrelerini yenilemek amacıyla çoğalmaya başlarlar. Ancak bu süreçte hepatik öncü hücreler, viral karaciğer hastalıkları nedeniyle veya diğer genotoksik streslerden (örn. HBV, aflatoksinler) hasarlandıkları için transforme olmuşlardır. Bu nedenle de bir grup hepatik öncü hücrenin kanser kök hücre davranışını gösterdikleri tespit edilmiştir ve bu hücreler “yan hücre popülasyonu” olarak tanımlanmıştır. Bu projenin amacı, karaciğer kanseri hücre hatlarında kanser kök hücrelerine karşı in vitro ve in vivo etkili ilaç adaylarını belirlemektir. Seçilen 2 iyi huylu ve 2 kötü huylu karaciğer kanseri hücre hatları, PI3K/Akt kinaz sinyal yolu inhibitörlerini de içeren inhibitör kütüphanesinden sitotoksik aktiviteli ilaç adayları ve yanısıra, Sorafenib, kamtotesin, doksorubisin, ile muamele edilerek, akış sitometrisi ile kanser kök hücre özelliği taşıyan hücreler (CD133+/EpCAM+ veya CD90+, CD44+) üzerindeki etkileri belirlenmiştir. Sonrasında, Sorafenib gibi hastalarda kanser kök hücre zenginleşmesine bağlı dirence sebep olan ilaçların etkilerini elimine etmek için seçilen inhibitörler ile kombinasyon çalışmaları yapılmıştır. Yapılan in vitro çalışmaların in vivo olarak tanımlanması amacıyla, tüysüz farede hollow fibre implantasyon tekniği uygulanmıştır. Hem kendi çalışmalarımız, hem de literatürdeki diğer çalışmalar dikkate alındığında PI3K/Akt/mTOR sinyal yolağı inhibitörlerinin anti-kanser tedavisindeki potansiyel rolü görülmüş ve doğru kombinasyonlarla Sorafenib`in anti-kanser etkisini arttırdığı gözlemlenmiştir.
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https://app.trdizin.gov.tr/publication/project/detail/TVRZNU5UWTI
https://hdl.handle.net/11511/50485
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Graduate School of Informatics, Project and Design
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R. Atalay and D. C. Kahraman, “Karaciğer kanseri kök hücre ksenograft modelinde sitotoksik aktiviteli yeni ilaç adaylarının etkilerinin belirlenmesi,” 2017. Accessed: 00, 2020. [Online]. Available: https://app.trdizin.gov.tr/publication/project/detail/TVRZNU5UWTI.