AdLTR2EF1α-FGF2-mediated prevention of fractionated irradiation-induced salivary hypofunction in swine.

Abstract:

:Patients frequently experience a loss of salivary function following irradiation (IR) for the treatment of an oral cavity and oropharyngeal cancer. Herein, we tested if transfer of fibroblast growth factor-2 (FGF2) cDNA could limit salivary dysfunction after fractionated IR (7.5 or 9 Gy for 5 consecutive days to one parotid gland) in the miniature pig (minipig). Parotid salivary flow rates steadily decreased by 16 weeks post-IR, whereas blood flow in the targeted parotid gland began to decrease ~3 days after beginning IR. By 2 weeks, post-IR salivary blood flow was reduced by 50%, at which point it remained stable for the remainder of the study. The single preadministration of a hybrid serotype 5 adenoviral vector encoding FGF2 (AdLTR2EF1a-FGF2) resulted in the protection of parotid microvascular endothelial cells from IR damage and significantly limited the decline of parotid salivary flow. Our results suggest that a local treatment directed at protecting salivary gland endothelial cells may be beneficial for patients undergoing IR for oral cavity and oropharyngeal cancer.

journal_name

Gene Ther

journal_title

Gene therapy

authors

Guo L,Gao R,Xu J,Jin L,Cotrim AP,Yan X,Zheng C,Goldsmith CM,Shan Z,Hai B,Zhou J,Zhang C,Baum BJ,Wang S

doi

10.1038/gt.2014.63

subject

Has Abstract

pub_date

2014-10-01 00:00:00

pages

866-73

issue

10

eissn

0969-7128

issn

1476-5462

pii

gt201463

journal_volume

21

pub_type

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