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2014 ; 157
(7
): 1577-90
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The diabetes susceptibility gene Clec16a regulates mitophagy
#MMPMID24949970
Soleimanpour SA
; Gupta A
; Bakay M
; Ferrari AM
; Groff DN
; Fadista J
; Spruce LA
; Kushner JA
; Groop L
; Seeholzer SH
; Kaufman BA
; Hakonarson H
; Stoffers DA
Cell
2014[Jun]; 157
(7
): 1577-90
PMID24949970
show ga
Clec16a has been identified as a disease susceptibility gene for type 1 diabetes,
multiple sclerosis, and adrenal dysfunction, but its function is unknown. Here we
report that Clec16a is a membrane-associated endosomal protein that interacts
with E3 ubiquitin ligase Nrdp1. Loss of Clec16a leads to an increase in the Nrdp1
target Parkin, a master regulator of mitophagy. Islets from mice with
pancreas-specific deletion of Clec16a have abnormal mitochondria with reduced
oxygen consumption and ATP concentration, both of which are required for normal ?
cell function. Indeed, pancreatic Clec16a is required for normal
glucose-stimulated insulin release. Moreover, patients harboring a diabetogenic
SNP in the Clec16a gene have reduced islet Clec16a expression and reduced insulin
secretion. Thus, Clec16a controls ? cell function and prevents diabetes by
controlling mitophagy. This pathway could be targeted for prevention and control
of diabetes and may extend to the pathogenesis of other Clec16a- and
Parkin-associated diseases.
|*Mitophagy
[MESH]
|Amino Acid Sequence
[MESH]
|Animals
[MESH]
|Carrier Proteins/chemistry
[MESH]
|Diabetes Mellitus, Type 1/*genetics/pathology
[MESH]
|Genetic Predisposition to Disease
[MESH]
|Glucose/metabolism
[MESH]
|Humans
[MESH]
|Insulin-Secreting Cells/metabolism
[MESH]
|Islets of Langerhans/metabolism/*pathology
[MESH]