Endoplasmic Reticulum Stress and Pancreatic Cancer
نویسندگان
چکیده
Endoplazmik retikulum (ER) stres, farklı uyaranlar sonucu gelişen önemli hücresel bir olaydır. ER strese farklı yanıt türleri vardır. Bunlardan biri evrimsel olarak korunmuş katlanmamış protein cevabıdır (UPR). UPR’nin moleküllerin sonraki aktivasyonu için üç sensörü vardır. Bu sensörler inozitol gerektiren enzim 1 (IRE1), aktive edici transkripsiyon faktörü 6 (ATF6) ve protein kinaz RNA (PKR)-benzeri ER kinaz (PERK). ER stresin olmadığı durumlarda bu sensörler inaktif durumda tutulurlar. Ancak ER stres durumunda aktif hale gelirler ve yolaktaki alt basamak hedeflerini indüklerler. ER stresin sonucunda hücre ya canlı kalabilir ya da ölebilir. Pek çok çalışmada ER stresin farklı tipte hastalıklarla; örneğin diyabet, Alzheimer hastalığı, prion hastalığı, kanser vb; bağlantılı olduğu gösterilmiştir. Bir kanser türü olarak pankreas kanserinin de ER stres ile ilişkili olduğu gösterilmiştir. Pankreas kanseri geç tanısı ile birlikte düşük tedavi edilebilme potansiyeline sahiptir. Pankreas kanserinin ER stres ile olan ilişkisi yeni bir tedavi yaklaşımı olarak görülmektedir. Bu derlemenin amacı ER stresin tetiklediği mekanizmalar üzerine ve patogenezinde etkili olduğu hastalıklardan biri olan pankreas kanseri ile olan ilişkisine genel bir bakış yapmaktır.
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