Tuft cells restrain pancreatic tumorigenesis through paracrine eicosanoid signaling

Abstract Despite numerous advances in our understanding of pancreatic ductal adenocarcinoma (PDA) genetics and biology, this disease is expected to become the second leading cause of cancer-related U.S. deaths within the next few years. Incomplete understanding of how it arises precludes development of early detection and interception strategies to improve therapeutic outcomes. Acinar to ductal metaplasia involving genesis of tuft cells is one early step in PDA formation, but their functional significance has remained obscure due to their rarity and a lack of methods and relevant animal models for their molecular and functional analysis. Here, we show that deletion of tuft cell master regulator Pou2f3 eliminates pancreatic tuft cells and increases fibrosis, alters immune cell activation, and accelerates disease progression. We demonstrate that tuft cell expression of the prostaglandin D2synthase Hpgds restrains pancreatic disease progression in early stages by inhibiting stromal activation. Analyses of human data sets are consistent with mouse studies. We propose that tuft cells and, by inference, the associated metaplastic lesions, play a protective role early in pancreatic tumorigenesis.Significance We find that tuft cell formation in response to oncogenicKrasis protective and restrains tumorigenesis through local production of anti-inflammatory substances, including paracrine prostaglandin D2signaling to the stroma. Our findings establish tuft cells as a metaplasia-induced tumor suppressive cell type..

Medienart:

Preprint

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

bioRxiv.org - (2023) vom: 24. Sept. Zur Gesamtaufnahme - year:2023

Sprache:

Englisch

Beteiligte Personen:

DelGiorno, Kathleen E. [VerfasserIn]
Chung, Chi-Yeh [VerfasserIn]
Mauer, H. Carlo [VerfasserIn]
Novak, Sammy Weiser [VerfasserIn]
Giraddi, Rajshekhar R. [VerfasserIn]
Wang, Dezhen [VerfasserIn]
Naeem, Razia F. [VerfasserIn]
Fang, Linjing [VerfasserIn]
Andrade, Leonardo R. [VerfasserIn]
Lytle, Nikki K. [VerfasserIn]
Ali, Wahida H. [VerfasserIn]
Tsui, Crystal [VerfasserIn]
Gubbala, Vikas B. [VerfasserIn]
Ridinger-Saison, Maya [VerfasserIn]
Ohmoto, Makoto [VerfasserIn]
O’Connor, Carolyn [VerfasserIn]
Erikson, Galina A. [VerfasserIn]
Shokhirev, Maxim Nikolaievich [VerfasserIn]
Urade, Yoshihiro [VerfasserIn]
Matsumoto, Ichiro [VerfasserIn]
Vavinskaya, Vera [VerfasserIn]
Singh, Pankaj K. [VerfasserIn]
Manor, Uri [VerfasserIn]
Olive, Kenneth P. [VerfasserIn]
Wahl, Geoffrey M. [VerfasserIn]

Links:

Volltext [kostenfrei]

Themen:

570
Biology

doi:

10.1101/2019.12.19.882985

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

XBI000684325