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2015 ; 26
(9-10
): 486-500
Nephropedia Template TP
gab.com Text
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English Wikipedia
Current strategies for mutation detection in phenotype-driven screens utilising
next generation sequencing
#MMPMID26449678
Simon MM
; Moresco EM
; Bull KR
; Kumar S
; Mallon AM
; Beutler B
; Potter PK
Mamm Genome
2015[Oct]; 26
(9-10
): 486-500
PMID26449678
show ga
Mutagenesis-based screens in mice are a powerful discovery platform to identify
novel genes or gene functions associated with disease phenotypes. An
N-ethyl-N-nitrosourea (ENU) mutagenesis screen induces single nucleotide variants
randomly in the mouse genome. Subsequent phenotyping of mutant and wildtype mice
enables the identification of mutated pathways resulting in phenotypes associated
with a particular ENU lesion. This unbiased approach to gene discovery conducts
the phenotyping with no prior knowledge of the functional mutations. Before the
advent of affordable next generation sequencing (NGS), ENU variant identification
was a limiting step in gene characterization, akin to 'finding a needle in a
haystack'. The emergence of a reliable reference genome alongside advances in NGS
has propelled ENU mutation discovery from an arduous, time-consuming exercise to
an effective and rapid form of mutation discovery. This has permitted large mouse
facilities worldwide to use ENU for novel mutation discovery in a high-throughput
manner, helping to accelerate basic science at the mechanistic level. Here, we
describe three different strategies used to identify ENU variants from NGS data
and some of the subsequent steps for mutation characterisation.