Endoplasmic Reticulum Stress and Pancreatic Cancer

نویسندگان

  • Kemal Ergin
  • Esra Gökmen
  • Adnan Menderes
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.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Endoplasmic reticulum stress regulates inflammation in adipocyte of obese rats via toll-like receptors 4 signaling

Objective(s): To explore whether endoplasmic reticulum (ER) stress regulates inflammation in adipose tissue of obese rats via TLR4 signaling. Materials and Methods: Sprague Dawley rats were randomly divided into four groups, and body weight, food intake, and free fatty acids (FFA) were measured. Real-time PCR and Western blot were used to determine mRNA or protein expression of TLR4, TRAF6, IKK...

متن کامل

Bortezomib sensitizes pancreatic cancer cells to endoplasmic reticulum stress-mediated apoptosis.

Bortezomib (PS-341, Velcade) is a potent and selective inhibitor of the proteasome that is currently under investigation for the treatment of solid malignancies. We have shown previously that bortezomib has activity in pancreatic cancer models and that the drug induces endoplasmic reticulum (ER) stress but also suppresses the unfolded protein response (UPR). Because the UPR is an important cyto...

متن کامل

Chromatin, Gene, and RNA Regulation The Orphan Nuclear Receptor NR4A1 (Nur77) Regulates Oxidative and Endoplasmic Reticulum Stress in Pancreatic Cancer Cells

NR4A1 (Nur77, TR3) is an orphan nuclear receptor that is overexpressed in pancreatic cancer and exhibits prooncogenic activity. RNA interference of NR4A1 expression in Panc-1 cells induced apoptosis and subsequent proteomic analysis revealed the induction of several markers of endoplasmic reticulum stress, including glucoserelated protein 78 (GRP78), CCAAT/enhancer-binding protein-homologous pr...

متن کامل

Involvement of Endoplasmic Reticulum Stress in Capsaicin-Induced Apoptosis of Human Pancreatic Cancer Cells

Capsaicin, main pungent ingredient of hot chilli peppers, has been shown to have anticarcinogenic effect on various cancer cells through multiple mechanisms. In this study, we investigated the apoptotic effect of capsaicin on human pancreatic cancer cells in both in vitro and in vivo systems, as well as the possible mechanisms involved. In vitro, treatment of both the pancreatic cancer cells (P...

متن کامل

The orphan nuclear receptor NR4A1 (Nur77) regulates oxidative and endoplasmic reticulum stress in pancreatic cancer cells.

UNLABELLED NR4A1 (Nur77, TR3) is an orphan nuclear receptor that is overexpressed in pancreatic cancer and exhibits pro-oncogenic activity. RNA interference of NR4A1 expression in Panc-1 cells induced apoptosis and subsequent proteomic analysis revealed the induction of several markers of endoplasmic reticulum stress, including glucose-related protein 78 (GRP78), CCAAT/enhancer-binding protein-...

متن کامل

Antitumor alkyl-lysophospholipid analogue edelfosine induces apoptosis in pancreatic cancer by targeting endoplasmic reticulum

Pancreatic cancer remains as one of the most deadly cancers, and responds poorly to current therapies. The prognosis is extremely poor, with a 5-year survival of less than 5%. Therefore, search for new effective therapeutic drugs is of pivotal need and urgency to improve treatment of this incurable malignancy. Synthetic alkyllysophospholipid analogues (ALPs) constitute a heterogeneous group of ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2015