Extracellular nicotinamide phosphoribosyltransferase (eNAMPT) drives abnormal pericyte-rich vasculature in triple-negative breast cancer

IF 9.2 1区 医学 Q1 PERIPHERAL VASCULAR DISEASE
Marianna Moro, Federica Carolina Balestrero, Giorgia Colombo, Simone Torretta, Nausicaa Clemente, Valerio Ciccone, Erika Del Grosso, Sandra Donnini, Cristina Travelli, Fabrizio Condorelli, Sabina Sangaletti, Armando A. Genazzani, Ambra A. Grolla
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引用次数: 0

Abstract

Tumour angiogenesis supports malignant cells with oxygen and nutrients to promote invasion and metastasis. A number of cytokines released in situ participate in the recruitment of endothelial cells and pericytes to trigger the formation of novel blood vessels, which are often abnormal, leaky, and disorganized. Nicotinamide phosphoribosyltransferase is a key intracellular enzyme involved in NAD metabolism and is up regulated in many cancers to meet bioenergetic demands. Yet, the same protein is also secreted extracellularly (eNAMPT), where it acts as a pro-inflammatory cytokine. High plasma eNAMPT levels have been reported in breast cancer patients and correlate with aggressiveness and prognosis. We now report that in a triple-negative breast cancer model, enriching the tumour microenvironment with eNAMPT leads to abundant angiogenesis and increased metastatization. Atypically, the eNAMPT-mediated pro-angiogenic effect is mainly directed to NG2+ pericytes. Indeed, eNAMPT acts as chemoattractant for pericytes and coordinates vessel-like tube formation, in synergism with the classical factor PDGF-BB. Stimulation of pericytes by eNAMPT leads to a pro-inflammatory activation, characterized by the overexpression of key chemokines (CXCL8, CXCL1, CCL2) and VCAM1, via NF-κB signalling. All these effects were ablated by the use of C269, an anti-eNAMPT neutralizing antibody, suggesting that this might represent a novel anti-angiogenic pharmacological approach for triple-negative breast cancer.

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来源期刊
Angiogenesis
Angiogenesis PERIPHERAL VASCULAR DISEASE-
CiteScore
21.90
自引率
8.20%
发文量
37
审稿时长
6-12 weeks
期刊介绍: Angiogenesis, a renowned international journal, seeks to publish high-quality original articles and reviews on the cellular and molecular mechanisms governing angiogenesis in both normal and pathological conditions. By serving as a primary platform for swift communication within the field of angiogenesis research, this multidisciplinary journal showcases pioneering experimental studies utilizing molecular techniques, in vitro methods, animal models, and clinical investigations into angiogenic diseases. Furthermore, Angiogenesis sheds light on cutting-edge therapeutic strategies for promoting or inhibiting angiogenesis, while also highlighting fresh markers and techniques for disease diagnosis and prognosis.
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