American Association for Cancer Research
21598290cd200775-sup-244433_2_supp_6663102_qrrntb.xlsx (19.69 kB)

Supplemental Table 3 from Netrin G1 Promotes Pancreatic Tumorigenesis through Cancer-Associated Fibroblast–Driven Nutritional Support and Immunosuppression

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posted on 2023-04-03, 22:45 authored by Ralph Francescone, Débora Barbosa Vendramini-Costa, Janusz Franco-Barraza, Jessica Wagner, Alexander Muir, Allison N. Lau, Linara Gabitova, Tatiana Pazina, Sapna Gupta, Tiffany Luong, Dustin Rollins, Ruchi Malik, Roshan J. Thapa, Diana Restifo, Yan Zhou, Kathy Q. Cai, Harvey H. Hensley, Yinfei Tan, Warren D. Kruger, Karthik Devarajan, Siddharth Balachandran, Andres J. Klein-Szanto, Huamin Wang, Wafik S. El-Deiry, Matthew G. Vander Heiden, Suraj Peri, Kerry S. Campbell, Igor Astsaturov, Edna Cukierman

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Core Comprehensive Cancer Center

Damon Runyon Cancer Research Foundation



Pancreatic ductal adenocarcinoma (PDAC) has a poor 5-year survival rate and lacks effective therapeutics. Therefore, it is of paramount importance to identify new targets. Using multiplex data from patient tissue, three-dimensional coculturing in vitro assays, and orthotopic murine models, we identified Netrin G1 (NetG1) as a promoter of PDAC tumorigenesis. We found that NetG1+ cancer-associated fibroblasts (CAF) support PDAC survival, through a NetG1-mediated effect on glutamate/glutamine metabolism. Also, NetG1+ CAFs are intrinsically immunosuppressive and inhibit natural killer cell–mediated killing of tumor cells. These protumor functions are controlled by a signaling circuit downstream of NetG1, which is comprised of AKT/4E-BP1, p38/FRA1, vesicular glutamate transporter 1, and glutamine synthetase. Finally, blocking NetG1 with a neutralizing antibody stunts in vivo tumorigenesis, suggesting NetG1 as potential target in PDAC. This study demonstrates the feasibility of targeting a fibroblastic protein, NetG1, which can limit PDAC tumorigenesis in vivo by reverting the protumorigenic properties of CAFs. Moreover, inhibition of metabolic proteins in CAFs altered their immunosuppressive capacity, linking metabolism with immunomodulatory function.See related commentary by Sherman, p. 230.This article is highlighted in the In This Issue feature, p. 211