The stromal microenvironment endows pancreatic neuroendocrine tumors with spatially specific invasive and metastatic phenotypes

Copyright © 2024. Published by Elsevier B.V..

Cancer-associated fibroblasts (CAFs) play an important role in a variety of cancers. However, the role of tumor stroma in nonfunctional pancreatic neuroendocrine tumors (NF-PanNETs) is often neglected. Profiling the heterogeneity of CAFs can reveal the causes of malignant phenotypes in NF-PanNETs. Here, we found that patients with high stromal proportion had poor prognosis, especially for that with infiltrating stroma (stroma and tumor cells that presented an infiltrative growth pattern and no regular boundary). In addition, myofibroblastic CAFs (myCAFs), characterized by FAP+ and α-SMAhigh, were spatially closer to tumor cells and promoted the EMT and tumor growth. Intriguingly, only tumor cells which were spatially closer to myCAFs underwent EMT. We further elucidated that myCAFs stimulate TGF-β expression in nearby tumor cells. Then, TGF-β promoted the EMT in adjacent tumor cells and promoted the expression of myCAFs marker genes in tumor cells, resulting in distant metastasis. Our results indicate that myCAFs cause spatial heterogeneity of EMT, which accounts for liver metastasis of NF-PanNETs. The findings of this study might provide possible targets for the prevention of liver metastasis.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:588

Enthalten in:

Cancer letters - 588(2024) vom: 28. Apr., Seite 216769

Sprache:

Englisch

Beteiligte Personen:

Ye, Zeng [VerfasserIn]
Li, Qiang [VerfasserIn]
Hu, Yuheng [VerfasserIn]
Hu, Haifeng [VerfasserIn]
Xu, Junfeng [VerfasserIn]
Guo, Muzi [VerfasserIn]
Zhang, Wuhu [VerfasserIn]
Lou, Xin [VerfasserIn]
Wang, Yan [VerfasserIn]
Gao, Heli [VerfasserIn]
Jing, Desheng [VerfasserIn]
Fan, Guixiong [VerfasserIn]
Qin, Yi [VerfasserIn]
Zhang, Yue [VerfasserIn]
Chen, Xuemin [VerfasserIn]
Chen, Jie [VerfasserIn]
Xu, Xiaowu [VerfasserIn]
Yu, Xianjun [VerfasserIn]
Liu, Mingyang [VerfasserIn]
Ji, Shunrong [VerfasserIn]

Links:

Volltext

Themen:

Cell interaction
Journal Article
Spatial heterogeneity
Transforming Growth Factor beta
Tumor cell plasticity
Tumor stroma

Anmerkungen:

Date Completed 09.04.2024

Date Revised 09.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.canlet.2024.216769

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369279611