內分泌-外分泌信號促進肥胖相關的胰腺導管腺癌
作者:
小柯機器人發布時間:2020/4/21 12:34:30
美國耶魯大學醫學院的Mandar Deepak Muzumdar研究組的近期工作表明,內分泌-外分泌信號促進肥胖相關的胰腺導管腺癌。該項研究成果於2020年4月17日在線發表於《細胞》雜誌。
肥胖是PDAC的主要危險因素,但是,肥胖如何以及何時促進PDAC的進展尚不清楚。
利用原發小鼠模型,研究人員證明了肥胖在胰腺導管腺癌(PDAC)早期發展中具有因果關係和可逆作用,並表明肥胖顯著增強了腫瘤的發生,而遺傳或飲食誘導的減肥則阻止了癌症的發展。
人類和鼠樣品的分子分析確定了肥胖的微環境影響,即促進腫瘤發生,而不是產生新的驅動基因突變,這些影響包括與肥胖相關腫瘤中胰島細胞的顯著適應性。
具體來說,研究人員確定了響應肥胖的肽激素膽囊收縮素(Cck)在β細胞中的異常表達,並表明胰島Cck促進致癌Kras驅動的胰腺導管腫瘤發生。
這項研究認為,PDAC的進展是由局部肥胖相關的腫瘤微環境變化驅動的,並且在PDAC的發展中提示了胰島素以外的內分泌-外分泌信號傳導。
附:英文原文
Title: Endocrine-Exocrine Signaling Drives Obesity-Associated Pancreatic Ductal Adenocarcinoma
Author: Katherine Minjee Chung, Jaffarguriqbal Singh, Lauren Lawres, Kimberly Judith Dorans, Cathy Garcia, Daniel B. Burkhardt, Rebecca Robbins, Arjun Bhutkar, Rebecca Cardone, Xiaojian Zhao, Ana Babic, Sara A. Vayrynen, Andressa Dias Costa, Jonathan A. Nowak, Daniel T. Chang, Richard F. Dunne, Aram F. Hezel, Albert C. Koong, Joshua J. Wilhelm, Melena D. Bellin, Vibe Nylander, Anna L. Gloyn, Mark I. McCarthy, Richard G. Kibbey, Smita Krishnaswamy, Brian M. Wolpin, Tyler Jacks, Charles S. Fuchs, Mandar Deepak Muzumdar
Issue&Volume: 2020-04-17
Abstract: Obesity is a major modifiable risk factor for pancreatic ductal adenocarcinoma (PDAC),yet how and when obesity contributes to PDAC progression is not well understood. Leveragingan autochthonous mouse model, we demonstrate a causal and reversible role for obesityin early PDAC progression, showing that obesity markedly enhances tumorigenesis, whilegenetic or dietary induction of weight loss intercepts cancer development. Molecularanalyses of human and murine samples define microenvironmental consequences of obesitythat foster tumorigenesis rather than new driver gene mutations, including significantpancreatic islet cell adaptation in obesity-associated tumors. Specifically, we identifyaberrant beta cell expression of the peptide hormone cholecystokinin (Cck) in responseto obesity and show that islet Cck promotes oncogenic Kras-driven pancreatic ductal tumorigenesis. Our studies argue that PDAC progression isdriven by local obesity-associated changes in the tumor microenvironment and implicateendocrine-exocrine signaling beyond insulin in PDAC development.
DOI: 10.1016/j.cell.2020.03.062
Source: https://www.cell.com/cell/fulltext/S0092-8674(20)30395-0
Cell:《細胞》,創刊於1974年。隸屬於細胞出版社,最新IF:36.216