The human long pentraxin PTX3 has complex regulatory roles at the crossroad of innate immunity, inflammation, and tissue repair. PTX3 can be produced by various cell types, including vascular endothelial cells (ECs), in response to pro-inflammatory cytokines or bacterial molecules. PTX3 has also been involved in the regulation of cardiovascular biology, even if ambiguous results have been so far provided in both preclinical and clinical research. In this study, we compared the proteomic profiles of human ECs (human umbilical vein ECs, HUVECs), focusing on differentially expressed proteins between the control and PTX3-silenced ECs. We identified 19 proteins that were more abundant in the proteome of control ECs and 23 proteins that were more expressed in PTX3-silenced cells. Among the latter, proteins with multifunctional roles in angiogenesis, oxidative stress, and inflammation were found, and were further validated by assessing their mRNAs with RT-qPCR. Nevertheless, the knock down of PTX3 did not affect in vitro angiogenesis. On the contrary, the lack of the protein induced an increase in pro-inflammatory markers and a shift to the more oxidative profile of PTX3-deficient ECs. Altogether, our results support the idea of a protective function for PTX3 in the control of endothelial homeostasis, and more generally, in cardiovascular biology.

The Effects of Silencing PTX3 on the Proteome of Human Endothelial Cells / C. Banfi, M. Brioschi, L.M. Vicentini, M.G. Cattaneo. - In: INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES. - ISSN 1661-6596. - 23:21(2022), pp. 13487.1-13487.15. [10.3390/ijms232113487]

The Effects of Silencing PTX3 on the Proteome of Human Endothelial Cells

L.M. Vicentini;M.G. Cattaneo
Ultimo
2022

Abstract

The human long pentraxin PTX3 has complex regulatory roles at the crossroad of innate immunity, inflammation, and tissue repair. PTX3 can be produced by various cell types, including vascular endothelial cells (ECs), in response to pro-inflammatory cytokines or bacterial molecules. PTX3 has also been involved in the regulation of cardiovascular biology, even if ambiguous results have been so far provided in both preclinical and clinical research. In this study, we compared the proteomic profiles of human ECs (human umbilical vein ECs, HUVECs), focusing on differentially expressed proteins between the control and PTX3-silenced ECs. We identified 19 proteins that were more abundant in the proteome of control ECs and 23 proteins that were more expressed in PTX3-silenced cells. Among the latter, proteins with multifunctional roles in angiogenesis, oxidative stress, and inflammation were found, and were further validated by assessing their mRNAs with RT-qPCR. Nevertheless, the knock down of PTX3 did not affect in vitro angiogenesis. On the contrary, the lack of the protein induced an increase in pro-inflammatory markers and a shift to the more oxidative profile of PTX3-deficient ECs. Altogether, our results support the idea of a protective function for PTX3 in the control of endothelial homeostasis, and more generally, in cardiovascular biology.
endothelial cells; endothelial dysfunction; inflammation; long pentraxin PTX3; oxidative stress; proteome; Humans; C-Reactive Protein; Proteomics; Human Umbilical Vein Endothelial Cells; Neovascularization, Pathologic; Inflammation; Serum Amyloid P-Component; Proteome
Settore BIO/14 - Farmacologia
PSRL222MLOCA_01 - Piano di Sostegno alla Ricerca 2015-2017 - Linea 2 "Dotazione annuale per attività istituzionali" (anno 2021) - LOCATI, MASSIMO - PSR_LINEA2_ / Piano di sviluppo di ricerca - Dotazioni dipartimentali - Linea 2 - 2022
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/946990
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