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@ARTICLE{Miller:120651,
author = {J. R. C. Miller and E. L. Pfister and W. Liu and R. Andre
and U. Träger$^*$ and L. A. Kennington and K. Lo and S.
Dijkstra and D. Macdonald and G. Ostroff and N. Aronin and
S. J. Tabrizi},
title = {{A}llele-{S}elective {S}uppression of {M}utant {H}untingtin
in {P}rimary {H}uman {B}lood {C}ells.},
journal = {Scientific reports},
volume = {7},
issn = {2045-2322},
address = {London},
publisher = {Nature Publishing Group},
reportid = {DKFZ-2017-01078},
pages = {46740 -},
year = {2017},
abstract = {Post-transcriptional gene silencing is a promising therapy
for the monogenic, autosomal dominant, Huntington's disease
(HD). However, wild-type huntingtin (HTT) has important
cellular functions, so the ideal strategy would selectively
lower mutant HTT while sparing wild-type. HD patients were
genotyped for heterozygosity at three SNP sites, before
phasing each SNP allele to wild-type or mutant HTT. Primary
ex vivo myeloid cells were isolated from heterozygous
patients and transfected with SNP-targeted siRNA, using
glucan particles taken up by phagocytosis. Highly selective
mRNA knockdown was achieved when targeting each allele of
rs362331 in exon 50 of the HTT transcript; this selectivity
was also present on protein studies. However, similar
selectivity was not observed when targeting rs362273 or
rs362307. Furthermore, HD myeloid cells are hyper-reactive
compared to control. Allele-selective suppression of either
wild-type or mutant HTT produced a significant, equivalent
reduction in the cytokine response of HD myeloid cells to
LPS, suggesting that wild-type HTT has a novel immune
function. We demonstrate a sequential therapeutic process
comprising genotyping and mutant HTT-linkage of SNPs,
followed by personalised allele-selective suppression in a
small patient cohort. We further show that
allele-selectivity in ex vivo patient cells is highly
SNP-dependent, with implications for clinical trial target
selection.},
cin = {D100},
ddc = {000},
cid = {I:(DE-He78)D100-20160331},
pnm = {314 - Tumor immunology (POF3-314)},
pid = {G:(DE-HGF)POF3-314},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:28436437},
pmc = {pmc:PMC5402279},
doi = {10.1038/srep46740},
url = {https://inrepo02.dkfz.de/record/120651},
}