Impaired proteolysis of noncanonical RAS proteins drives clonal hematopoietic transformation

S Chen, RS Vedula, A Cuevas-Navarro, B Lu, SJ Hogg… - Cancer discovery, 2022 - AACR
Recently, screens for mediators of resistance to FLT3 and ABL kinase inhibitors in leukemia
resulted in the discovery of LZTR1 as an adapter of a Cullin-3 RING E3 ubiquitin ligase …

RAS-dependent RAF-MAPK hyperactivation by pathogenic RIT1 is a therapeutic target in Noonan syndrome–associated cardiac hypertrophy

A Cuevas-Navarro, M Wagner, R Van, M Swain… - Science …, 2023 - science.org
RIT1 is a RAS guanosine triphosphatase (GTPase) that regulates different aspects of signal
transduction and is mutated in lung cancer, leukemia, and in the germline of individuals with …

[HTML][HTML] Mutation-induced LZTR1 polymerization provokes cardiac pathology in recessive Noonan syndrome

AV Busley, Ó Gutiérrez-Gutiérrez, E Hammer, F Koitka… - Cell reports, 2024 - cell.com
Noonan syndrome patients harboring causative variants in LZTR1 are particularly at risk to
develop severe and early-onset hypertrophic cardiomyopathy. In this study, we investigate …

Non-Mammalian Models for Understanding Neurological Defects in RASopathies

M Rodríguez-Martín, J Báez-Flores, V Ribes… - Biomedicines, 2024 - mdpi.com
RASopathies, a group of neurodevelopmental congenital disorders stemming from
mutations in the RAS/MAPK pathway, present a unique opportunity to delve into the …

Preclinical evaluation of CRISPR-based therapies for Noonan syndrome caused by deep-intronic LZTR1 variants

C Knauer, H Haltern, E Schoger, S Kügler… - … Therapy-Nucleic Acids, 2024 - cell.com
Gene variants in LZTR1 are implicated to cause Noonan syndrome associated with a severe
and early-onset hypertrophic cardiomyopathy. Mechanistically, LZTR1 deficiency results in …

Risk of meningomyelocele mediated by the common 22q11. 2 deletion

KI Vong, S Lee, KS Au, TB Crowley, V Capra, J Martino… - Science, 2024 - science.org
Meningomyelocele is one of the most severe forms of neural tube defects (NTDs) and the
most frequent structural birth defect of the central nervous system. We assembled the Spina …

[HTML][HTML] Dysregulation of RAS proteostasis by autosomal-dominant LZTR1 mutation induces Noonan syndrome–like phenotypes in mice

T Abe, K Morisaki, T Niihori, M Terao, S Takada… - JCI …, 2024 - pmc.ncbi.nlm.nih.gov
Leucine-zipper–like posttranslational regulator 1 (LZTR1) is a member of the BTB-Kelch
superfamily, which regulates the RAS proteostasis. Autosomal dominant (AD) mutations in …

Typical NF2 and LTZR1 mutations are retained in an immortalized human schwann cell model of schwannomatosis

V Melfi, T Mohamed, A Colciago, A Fasciani… - Heliyon, 2024 - cell.com
Human SCs play a primary role in SWN, a rare genetic disorder in which patients develop
multiple schwannomas. So that, their isolation and immortalization could represent an …

Defective protein degradation in genetic disorders

P Castel - Biochimica et Biophysica Acta (BBA)-Molecular Basis …, 2022 - Elsevier
Understanding the molecular mechanisms that underlie different human pathologies is
necessary to develop novel therapeutic strategies. An emerging mechanism of …

[HTML][HTML] A noncanonical GTPase signaling mechanism controls exit from mitosis in budding yeast

X Zhou, SY Weng, SP Bell, A Amon - bioRxiv, 2024 - ncbi.nlm.nih.gov
In the budding yeast Saccharomyces cerevisiae, exit from mitosis is coupled to spindle
position to ensure successful genome partitioning between mother and daughter cell. This …