TUBA1A mutations cause wide spectrum lissencephaly (smooth brain) and suggest that multiple neuronal migration pathways converge on alpha tubulins.
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TUBA1A mutations cause wide spectrum lissencephaly (smooth brain) and suggest that multiple neuronal migration pathways converge on alpha tubulins. / Kumar, Ravinesh A; Pilz, Daniela T; Babatz, Timothy D; Cushion, Thomas D; Harvey, Kirsten; Topf, Maya; Yates, Laura; Robb, Stephanie; Uyanik, Gökhan; Mancini, Gracia M S; Rees, Mark I; Harvey, Robert J; Dobyns, William B.
In: HUM MOL GENET, Vol. 19, No. 14, 14, 2010, p. 2817-2827.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - TUBA1A mutations cause wide spectrum lissencephaly (smooth brain) and suggest that multiple neuronal migration pathways converge on alpha tubulins.
AU - Kumar, Ravinesh A
AU - Pilz, Daniela T
AU - Babatz, Timothy D
AU - Cushion, Thomas D
AU - Harvey, Kirsten
AU - Topf, Maya
AU - Yates, Laura
AU - Robb, Stephanie
AU - Uyanik, Gökhan
AU - Mancini, Gracia M S
AU - Rees, Mark I
AU - Harvey, Robert J
AU - Dobyns, William B
PY - 2010
Y1 - 2010
N2 - We previously showed that mutations in LIS1 and DCX account for approximately 85% of patients with the classic form of lissencephaly (LIS). Some rare forms of LIS are associated with a disproportionately small cerebellum, referred to as lissencephaly with cerebellar hypoplasia (LCH). Tubulin alpha1A (TUBA1A), encoding a critical structural subunit of microtubules, has recently been implicated in LIS. Here, we screen the largest cohort of unexplained LIS patients examined to date to determine: (i) the frequency of TUBA1A mutations in patients with lissencephaly, (ii) the spectrum of phenotypes associated with TUBA1A mutations and (iii) the functional consequences of different TUBA1A mutations on microtubule function. We identified novel and recurrent TUBA1A mutations in approximately 1% of children with classic LIS and in approximately 30% of children with LCH, making this the first major gene associated with the rare LCH phenotype. We also unexpectedly found a TUBA1A mutation in one child with agenesis of the corpus callosum and cerebellar hypoplasia without LIS. Thus, our data demonstrate a wider spectrum of phenotypes than previously reported and allow us to propose new recommendations for clinical testing. We also provide cellular and structural data suggesting that LIS-associated mutations of TUBA1A operate via diverse mechanisms that include disruption of binding sites for microtubule-associated proteins (MAPs).
AB - We previously showed that mutations in LIS1 and DCX account for approximately 85% of patients with the classic form of lissencephaly (LIS). Some rare forms of LIS are associated with a disproportionately small cerebellum, referred to as lissencephaly with cerebellar hypoplasia (LCH). Tubulin alpha1A (TUBA1A), encoding a critical structural subunit of microtubules, has recently been implicated in LIS. Here, we screen the largest cohort of unexplained LIS patients examined to date to determine: (i) the frequency of TUBA1A mutations in patients with lissencephaly, (ii) the spectrum of phenotypes associated with TUBA1A mutations and (iii) the functional consequences of different TUBA1A mutations on microtubule function. We identified novel and recurrent TUBA1A mutations in approximately 1% of children with classic LIS and in approximately 30% of children with LCH, making this the first major gene associated with the rare LCH phenotype. We also unexpectedly found a TUBA1A mutation in one child with agenesis of the corpus callosum and cerebellar hypoplasia without LIS. Thus, our data demonstrate a wider spectrum of phenotypes than previously reported and allow us to propose new recommendations for clinical testing. We also provide cellular and structural data suggesting that LIS-associated mutations of TUBA1A operate via diverse mechanisms that include disruption of binding sites for microtubule-associated proteins (MAPs).
KW - Humans
KW - Male
KW - Female
KW - Child
KW - Cells, Cultured
KW - Brain pathology
KW - Models, Molecular
KW - Polymorphism, Single Nucleotide
KW - Signal Transduction genetics
KW - Mutation physiology
KW - Neurons metabolism
KW - Transfection
KW - Cell Movement genetics
KW - Genetic Association Studies
KW - Lissencephaly genetics
KW - Protein Binding genetics
KW - Protein Structure, Secondary genetics
KW - Tubulin chemistry
KW - Humans
KW - Male
KW - Female
KW - Child
KW - Cells, Cultured
KW - Brain pathology
KW - Models, Molecular
KW - Polymorphism, Single Nucleotide
KW - Signal Transduction genetics
KW - Mutation physiology
KW - Neurons metabolism
KW - Transfection
KW - Cell Movement genetics
KW - Genetic Association Studies
KW - Lissencephaly genetics
KW - Protein Binding genetics
KW - Protein Structure, Secondary genetics
KW - Tubulin chemistry
M3 - SCORING: Zeitschriftenaufsatz
VL - 19
SP - 2817
EP - 2827
JO - HUM MOL GENET
JF - HUM MOL GENET
SN - 0964-6906
IS - 14
M1 - 14
ER -