Mutated-leptin gene transfer induces increases in body weight by electroporation and hydrodynamics-based gene delivery in mice.

Abstract:

:To investigate whether in vivo gene transfer causes leptin-antagonistic effects on food intake, animal body weight and fat tissue weight, the R128Q mutated-leptin gene, an R to Q substitution at position 128 of mouse leptin, was transferred into mouse liver and leg muscle by electroporation and hydrodynamics-based gene delivery. Mutated-leptin gene transfer by electroporation caused significant increases in body weight at 5 days and after (5.4% increase relative to control; p<0.05). Hydrodynamics-based gene delivery of the mutated-leptin gene also caused an increase in body weight (3.0% increase relative to control; p<0.05). Mutated-leptin gene transfer by electroporation significantly increased the tissue weight of epididymal white fat and neuropeptide Y mRNA expression in the hypothalamus compared with those of the control group 3 weeks after gene transfer (p<0.05). These results suggest that mutated-leptin gene transfer successfully produced leptin-antagonistic effects by modulating the central regulator of energy homeostasis. Also, the extent of leptin-antagonistic effects by electroporation was much higher than hydrodynamics-based gene delivery, with at least single gene transfer.

journal_name

Int J Mol Med

authors

Xiang L,Murai A,Muramatsu T

subject

Has Abstract

pub_date

2005-12-01 00:00:00

pages

1015-20

issue

6

eissn

1107-3756

issn

1791-244X

journal_volume

16

pub_type

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