Recombinant Bactericidal Permeability Increasing Protein (rBPI21) Inhibits Surgery-induced Tumour Growth in a Murine Model of Metastatic Disease

Overview

Journal Ir J Med Sci

Specialty General Medicine

Date 2008 Oct 16

PMID 18855097

Citations 1

Authors

G T ODonoghue

G P Pidgeon

J H Harmey

R Dedrick

H P Redmond

D J Bouchier-Hayes

Affiliations

Soon will be listed here.

Abstract

Background: Endotoxin (LPS), a cell wall constituent of gram-negative bacteria, is a potent inflammatory stimulus. We demonstrated that laparotomy increases primary tumour growth and experimental lung metastases, implicating endotoxin as a causative factor. We hypothesised that the anti-endotoxin agent, rBPI(21) would block surgery-induced tumour growth.

Methods: Mammary adenocarcinoma cells were injected into female BALB/c mice to establish lung metastases. Mice were randomised into three groups receiving anaesthesia, laparotomy or laparotomy and rBPI(21) treatment on day 14. Animals were killed on day 19, lungs harvested and blood obtained. Number and size of lung metastases were recorded. Apoptosis, mitosis and microvessel density within metastases were assessed and VEGF measured.

Conclusions: Laparotomy increased metastatic growth, decreased tumour cell apoptosis, increased tumour cell proliferation, increased microvessel density and circulating VEGF. LPS blockade by rBPI(21) attenuated this increased growth and decreased proliferation, increased apoptosis, decreased micro-vessel density and circulating VEGF. This suggests that rBPI(21), has clinical potential in attenuating surgery enhanced tumour growth, especially in patients with a history of cancer undergoing laparotomy.

Citing Articles

Bactericidal/Permeability-Increasing Protein Downregulates the Inflammatory Response in In Vivo Models of Arthritis.

Scanu A, Luisetto R, Oliviero F, Galuppini F, Lazzarin V, Pennelli G Int J Mol Sci. 2022; 23(21).

PMID: 36361854 PMC: 9656099. DOI: 10.3390/ijms232113066.

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