scholarly journals 981. Naked DNA-Mediated Insulin Gene Transfer to the Liver. Inclusion of a Long Genomic Sequence Prolongs Insulin Expression

2003 ◽  
Vol 7 (5) ◽  
pp. S378
Gene Therapy ◽  
2001 ◽  
Vol 8 (19) ◽  
pp. 1480-1489 ◽  
Author(s):  
AL Shifrin ◽  
A Auricchio ◽  
Q-C Yu ◽  
J Wilson ◽  
SE Raper

2009 ◽  
Vol 1181 ◽  
Author(s):  
Liangdeng Yu ◽  
S. Anuntalabhochai

AbstractMeV-ion beam has long been applied to biology research and applications for many decades as highly energetic ions are undoubtedly able to interact directly with biology molecules to cause changes in biology. However, low-energy ion beam at tens of keV and even lower has also been found to have significant biological effects on living materials. The finding has led to applications of ion-beam induced mutation and gene transfer. From the theoretical point of view, the low-energy ion beam effects on biology are difficult to understand since the ion range is so short that the ions can hardly directly interact with the key biological molecules for the changes. This talk introduces interesting aspects of low-energy ion beam biology, including basis of ion beam biotechnology and recent developments achieved in Chiang Mai University in relevant applications such as mutation and gene transfer and investigations on mechanisms involved in the low-energy ion interaction with biological matter such as eV-keV ion beam bombardments of naked DNA and the cell envelopes.


Cells ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 2474
Author(s):  
Kian Chuan Sia ◽  
Zhen Ying Fu ◽  
Roy Y. Calne ◽  
Amit C. Nathwani ◽  
Kok Onn Lee ◽  
...  

We have previously used a hepatotropic adeno-associated viral (AAV) vector with a modified human insulin gene to treat diabetic mice. The HLP (hybrid liver-specific promoter) used was constitutively active and non-responsive to glucose. In this study, we examined the effects of addition of glucose responsive elements (R3G) and incorporation of a 3′ albumin enhancer (3′iALB) on insulin expression. In comparison with the original promoter, glucose responsiveness was only observed in the modified promoters in vitro with a 36 h lag time before the peak expression. A 50% decrease in the number of viral particles at 5 × 109 vector genome (vg)/mouse was required by AAV8-R3GHLP-hINSco to reduce the blood sugar level to near normoglycemia when compared to the original AAV8-HLP-hINSco that needed 1 × 1010 vg/mouse. The further inclusion of an 860 base-pairs 3′iALB enhancer component in the 3′ untranslated region increased the in vitro gene expression significantly but this increase was not observed when the packaged virus was systemically injected in vivo. The addition of R3G to the HLP promoter in the AAV8-human insulin vector increased the insulin expression and secretion, thereby lowering the required dosage for basal insulin treatment. This in turn reduces the risk of liver toxicity and cost of vector production.


2003 ◽  
Vol 318 (2) ◽  
pp. 230-235 ◽  
Author(s):  
Wolfgang Walther ◽  
Ulrike Stein ◽  
Carsten Voss ◽  
Torsten Schmidt ◽  
Martin Schleef ◽  
...  

1998 ◽  
Vol 30 (7) ◽  
pp. 2913 ◽  
Author(s):  
M Yamaguchi ◽  
M Kuzume ◽  
T Matsumoto ◽  
H Shimura ◽  
H Nakano ◽  
...  

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