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Inactivation of Notch4 Attenuated Pancreatic Tumorigenesis in Mice

Expression of the Notch family of receptors is often upregulated in pancreatic ductal adenocarcinoma (PDAC). In this study, we focused on Notch4, which had not been investigated in PDAC. We generated KC (LSL-Kras(G12D);p48-Cre), N4(−)(/)(−)KC (Notch4(−)(/)(−);LSL-Kras(G12D);p48-Cre), PKC (p16(fl/fl)...

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Autores principales: Saeki, Kiyoshi, Qiu, Wanglong, Friedman, Richard A., Pan, Samuel, Lu, Jordan, Ichimiya, Shu, Chio, Iok In Christine, Shawber, Carrie J., Kitajewski, Jan, Hu, Jianhua, Su, Gloria H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for Cancer Research 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10035463/
https://www.ncbi.nlm.nih.gov/pubmed/36970723
http://dx.doi.org/10.1158/2767-9764.CRC-22-0106
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author Saeki, Kiyoshi
Qiu, Wanglong
Friedman, Richard A.
Pan, Samuel
Lu, Jordan
Ichimiya, Shu
Chio, Iok In Christine
Shawber, Carrie J.
Kitajewski, Jan
Hu, Jianhua
Su, Gloria H.
author_facet Saeki, Kiyoshi
Qiu, Wanglong
Friedman, Richard A.
Pan, Samuel
Lu, Jordan
Ichimiya, Shu
Chio, Iok In Christine
Shawber, Carrie J.
Kitajewski, Jan
Hu, Jianhua
Su, Gloria H.
author_sort Saeki, Kiyoshi
collection PubMed
description Expression of the Notch family of receptors is often upregulated in pancreatic ductal adenocarcinoma (PDAC). In this study, we focused on Notch4, which had not been investigated in PDAC. We generated KC (LSL-Kras(G12D);p48-Cre), N4(−)(/)(−)KC (Notch4(−)(/)(−);LSL-Kras(G12D);p48-Cre), PKC (p16(fl/fl);LSL-Kras(G12D);p48-Cre), and N4(−)(/)(−)PKC (Notch4(−/)(−); p16(fl/f)(l);LSL-Kras(G12D);p48-Cre) genetically engineered mouse models (GEMM). We performed caerulein treatment in both KC and N4(−)(/)(−)KC mice, and the development of acinar-to-ductal metaplasia (ADM) and pancreatic intraepithelial neoplasia (PanIN) lesions were significantly diminished in the N4(−)(/)(−)KC than in the KC GEMM (P = 0.01). This in vivo result was validated by in vitro ADM induction of the explant cultures of pancreatic acinar cells from the N4(−)(/)(−)KC and KC mice (P < 0.001), confirming that Notch4 is an important contributor to early pancreatic tumorigenesis. To evaluate the role of Notch4 in the later stage of pancreatic tumorigenesis, we compared the PKC and N4(−)(/)(−)PKC mice. The N4(−)(/)(−)PKC mice had better overall survival (P = 0.012) and significantly reduced tumor burden (PanIN: P = 0.018 at 2 months, PDAC: P = 0.039 at 5 months) compared with the PKC GEMM. RNA-sequencing analysis of pancreatic tumor cell lines derived from the PKC and N4(−)(/)(−)PKC GEMMs revealed that 408 genes were differentially expressed (FDR < 0.05) and Pcsk5 is a potential downstream effector of the Notch4 signaling pathway (P < 0.001). Low expression of Pcsk5 positively correlates with good survival in patients with PDAC (P = 0.028). We have identified a novel role for Notch4 signaling with tumor-promoting function in pancreatic tumorigenesis. Our study also uncovered a novel association between Pcsk5 and Notch4 signaling in PDAC. SIGNIFICANCE: We demonstrated that global inactivation of Notch4 significantly improved the survival of an aggressive mouse model for PDAC and provided preclinical evidence that Notch4 and Pcsk5 are novel targets for PDAC therapies.
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spelling pubmed-100354632023-03-24 Inactivation of Notch4 Attenuated Pancreatic Tumorigenesis in Mice Saeki, Kiyoshi Qiu, Wanglong Friedman, Richard A. Pan, Samuel Lu, Jordan Ichimiya, Shu Chio, Iok In Christine Shawber, Carrie J. Kitajewski, Jan Hu, Jianhua Su, Gloria H. Cancer Res Commun Research Article Expression of the Notch family of receptors is often upregulated in pancreatic ductal adenocarcinoma (PDAC). In this study, we focused on Notch4, which had not been investigated in PDAC. We generated KC (LSL-Kras(G12D);p48-Cre), N4(−)(/)(−)KC (Notch4(−)(/)(−);LSL-Kras(G12D);p48-Cre), PKC (p16(fl/fl);LSL-Kras(G12D);p48-Cre), and N4(−)(/)(−)PKC (Notch4(−/)(−); p16(fl/f)(l);LSL-Kras(G12D);p48-Cre) genetically engineered mouse models (GEMM). We performed caerulein treatment in both KC and N4(−)(/)(−)KC mice, and the development of acinar-to-ductal metaplasia (ADM) and pancreatic intraepithelial neoplasia (PanIN) lesions were significantly diminished in the N4(−)(/)(−)KC than in the KC GEMM (P = 0.01). This in vivo result was validated by in vitro ADM induction of the explant cultures of pancreatic acinar cells from the N4(−)(/)(−)KC and KC mice (P < 0.001), confirming that Notch4 is an important contributor to early pancreatic tumorigenesis. To evaluate the role of Notch4 in the later stage of pancreatic tumorigenesis, we compared the PKC and N4(−)(/)(−)PKC mice. The N4(−)(/)(−)PKC mice had better overall survival (P = 0.012) and significantly reduced tumor burden (PanIN: P = 0.018 at 2 months, PDAC: P = 0.039 at 5 months) compared with the PKC GEMM. RNA-sequencing analysis of pancreatic tumor cell lines derived from the PKC and N4(−)(/)(−)PKC GEMMs revealed that 408 genes were differentially expressed (FDR < 0.05) and Pcsk5 is a potential downstream effector of the Notch4 signaling pathway (P < 0.001). Low expression of Pcsk5 positively correlates with good survival in patients with PDAC (P = 0.028). We have identified a novel role for Notch4 signaling with tumor-promoting function in pancreatic tumorigenesis. Our study also uncovered a novel association between Pcsk5 and Notch4 signaling in PDAC. SIGNIFICANCE: We demonstrated that global inactivation of Notch4 significantly improved the survival of an aggressive mouse model for PDAC and provided preclinical evidence that Notch4 and Pcsk5 are novel targets for PDAC therapies. American Association for Cancer Research 2022-12-12 /pmc/articles/PMC10035463/ /pubmed/36970723 http://dx.doi.org/10.1158/2767-9764.CRC-22-0106 Text en © 2022 The Authors; Published by the American Association for Cancer Research https://creativecommons.org/licenses/by/4.0/This open access article is distributed under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.
spellingShingle Research Article
Saeki, Kiyoshi
Qiu, Wanglong
Friedman, Richard A.
Pan, Samuel
Lu, Jordan
Ichimiya, Shu
Chio, Iok In Christine
Shawber, Carrie J.
Kitajewski, Jan
Hu, Jianhua
Su, Gloria H.
Inactivation of Notch4 Attenuated Pancreatic Tumorigenesis in Mice
title Inactivation of Notch4 Attenuated Pancreatic Tumorigenesis in Mice
title_full Inactivation of Notch4 Attenuated Pancreatic Tumorigenesis in Mice
title_fullStr Inactivation of Notch4 Attenuated Pancreatic Tumorigenesis in Mice
title_full_unstemmed Inactivation of Notch4 Attenuated Pancreatic Tumorigenesis in Mice
title_short Inactivation of Notch4 Attenuated Pancreatic Tumorigenesis in Mice
title_sort inactivation of notch4 attenuated pancreatic tumorigenesis in mice
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10035463/
https://www.ncbi.nlm.nih.gov/pubmed/36970723
http://dx.doi.org/10.1158/2767-9764.CRC-22-0106
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