RNA-mediated interference indicates that SEL1L plays a role in pancreatic beta-cell growth.
The specificity of SEL1L expression and promoter activity for the pancreatic cell population, its chromosomal location, as well as its similarities to the yeast Hrd3p protein, a component of HRD complex which is responsible for endoplasmic reticulum (ER)-associated degradation of numerous ER-resident proteins, prompted us to study its effects on beta cell function. In this study we show that lowering SEL1L expression, by using the short interfering RNAs technology as well as antisense transfection, resulted in severe perturbation of betaTC-3 growth and metabolic activity. We hypothesize that SEL1L may exert its function by protecting the cells from ER stress and could counteract immune responses.
Institute for Biomedical Technologies, National Research Council, Milan, Italy.
Giuseppe
G
Diaferia
Monica
M
Cattaneo
Giuliana
G
Saltini
Maria Carla
MC
Proverbio
Eugenia
E
Monferini
Giulia
G
Malferrari
Alberto
A
Albertini
Ida
I
Biunno
D000818:Animals; D017931:DNA Primers; D005455:Fluorescent Antibody Technique; D047908:Intracellular Signaling Peptides and Proteins; D007515:Islets of Langerhans / Q000254:growth & development / Q000378:metabolism*; D051379:Mice; D011506:Proteins / Q000378:metabolism*; D034622:RNA Interference / Q000502:physiology*; D034741:RNA, Small Interfering / Q000235:genetics; D014162:Transfection; D014407:Tumor Cells, Cultured
D017931:DNA Primers; D047908:Intracellular Signaling Peptides and Proteins; D011506:Proteins; D034741:RNA, Small Interfering; C492169:Sel1h protein, mouse