TGF-βR2 signaling coordinates pulmonary vascular repair after viral injury in mice and human tissue

Disruption of pulmonary vascular homeostasis is a central feature of viral pneumonia, wherein endothelial cell (EC) death and subsequent angiogenic responses are critical determinants of the outcome of severe lung injury. A more granular understanding of the fundamental mechanisms driving reconstitution of lung endothelium is necessary to facilitate therapeutic vascular repair. Here, we demonstrated that TGF-β signaling through TGF-βR2 (transforming growth factor-β receptor 2) is activated in pulmonary ECs upon influenza infection, and mice deficient in endothelial Tgfbr2 exhibited prolonged injury and diminished vascular repair. Loss of endothelial Tgfbr2 prevented autocrine Vegfa (vascular endothelial growth factor α) expression, reduced endothelial proliferation, and impaired renewal of aerocytes thought to be critical for alveolar gas exchange. Angiogenic responses through TGF-βR2 were attributable to leucine-rich α-2-glycoprotein 1, a proangiogenic factor that counterbalances canonical angiostatic TGF-β signaling. Further, we developed a lipid nanoparticle that targets the pulmonary endothelium, Lung-LNP (LuLNP). Delivery of Vegfa mRNA, a critical TGF-βR2 downstream effector, by LuLNPs improved the impaired regeneration phenotype of EC Tgfbr2 deficiency during influenza injury. These studies defined a role for TGF-βR2 in lung endothelial repair and demonstrated efficacy of an efficient and safe endothelial-targeted LNP capable of delivering therapeutic mRNA cargo for vascular repair in influenza infection.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:16

Enthalten in:

Science translational medicine - 16(2024), 732 vom: 31. Jan., Seite eadg6229

Sprache:

Englisch

Beteiligte Personen:

Zhao, Gan [VerfasserIn]
Xue, Lulu [VerfasserIn]
Weiner, Aaron I [VerfasserIn]
Gong, Ningqiang [VerfasserIn]
Adams-Tzivelekidis, Stephanie [VerfasserIn]
Wong, Joanna [VerfasserIn]
Gentile, Maria E [VerfasserIn]
Nottingham, Ana N [VerfasserIn]
Basil, Maria C [VerfasserIn]
Lin, Susan M [VerfasserIn]
Niethamer, Terren K [VerfasserIn]
Diamond, Joshua M [VerfasserIn]
Bermudez, Christian A [VerfasserIn]
Cantu, Edward [VerfasserIn]
Han, Xuexiang [VerfasserIn]
Cao, Yaqi [VerfasserIn]
Alameh, Mohamad-Gabriel [VerfasserIn]
Weissman, Drew [VerfasserIn]
Morrisey, Edward E [VerfasserIn]
Mitchell, Michael J [VerfasserIn]
Vaughan, Andrew E [VerfasserIn]

Links:

Volltext

Themen:

EC 2.7.11.30
Journal Article
RNA, Messenger
Receptor, Transforming Growth Factor-beta Type II
Transforming Growth Factor beta
Vascular Endothelial Growth Factor A

Anmerkungen:

Date Completed 02.02.2024

Date Revised 20.02.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1126/scitranslmed.adg6229

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM367855062