Faculty Collaboration Database

Characterization of Prox1 and VEGFR-3 expression and lymphatic phenotype in normal organs of mice lacking p50 subunit of NF-κB. Microcirculation 2011 Feb;18(2):85-101

Date

12/21/2010

Pubmed ID

21166921

Pubmed Central ID

PMC3058545

DOI

10.1111/j.1549-8719.2010.00057.x

Scopus ID

2-s2.0-79551647277 (requires institutional sign-in at Scopus site)   19 Citations

Abstract

OBJECTIVE: Inflammation and NF-κB are highly associated with lymphangiogenesis but the underlying mechanisms remain unclear. We recently established that activated NF-κB p50 subunit increases expression of the main lymphangiogenic mediators, VEGFR-3 and its transcriptional activator, Prox1. To elucidate the role of p50 in lymphatic vasculature, we compared LVD and phenotype in p50 KO and WT mice.

METHODS: Normal tissues from KO and WT mice were stained for LYVE-1 to calculate LVD. VEGFR-3 and Prox1 expressions were analyzed by immunofluorescence and qRT-PCR.

RESULTS: Compared with WT, LVD in the liver and lungs of KO mice was reduced by 39% and 13%, respectively. This corresponded to 25-44% decreased VEGFR-3 and Prox1 expression. In the MFP, LVD was decreased by 18% but VEGFR-3 and Prox1 expression was 80-140% higher than in WT. Analysis of p65 and p52 NF-κB subunits and an array of inflammatory mediators showed a significant increase in p50 alternative pathways in the MFP but not in other organs.

CONCLUSIONS: These findings demonstrate the role of NF-κB p50 in regulating the expression of VEGFR-3, Prox1 and LVD in the mammary tissue, liver, and lung.

Author List

Flister MJ, Volk LD, Ran S

MESH terms used to index this publication - Major topics in bold

Animals
Base Sequence
Brain
DNA Primers
Female
Gene Expression Regulation, Developmental
Homeodomain Proteins
Inflammation Mediators
Liver
Lung
Lymphangiogenesis
Lymphatic Vessels
Mammary Glands, Animal
Mice
Mice, 129 Strain
Mice, Inbred C57BL
Mice, Knockout
Models, Biological
Myocardium
NF-kappa B p50 Subunit
Phenotype
RNA, Messenger
Tissue Distribution
Tumor Suppressor Proteins
Vascular Endothelial Growth Factor Receptor-3