journal
https://read.qxmd.com/read/37788121/correction-to-myofibrillar-myopathy-hallmarks-associated-with-zak-deficiency
#1
(no author information available yet)
No abstract text is available yet for this article.
October 3, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37777189/correction-to-the-mixed-lineage-leukemia-fusion-partner-af4-stimulates-rna-polymerase-ii-transcriptional-elongation-and-mediates-coordinated-chromatin-remodeling
#2
(no author information available yet)
No abstract text is available yet for this article.
September 30, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37774345/multi-omics-analysis-reveals-the-potential-pathogenesis-and-therapeutic-targets-of-diabetic-kidney-disease
#3
JOURNAL ARTICLE
Lan Wei, Jingjing Gao, Liangzhi Wang, Qianru Tao, Chao Tu
Clinicians have long been interested in understanding the molecular basis of diabetic kidney disease (DKD)and its potential treatment targets. Its pathophysiology involves protein phosphorylation, one of the most recognizable post-transcriptional modifications, that can take part in many cellular functions and control different metabolic processes. In order to recognize the molecular and protein changes of DKD kidney, this study applied Tandem liquid chromatography-mass spectrometry (LC-MS/MS) and Next-Generation Sequencing, along with Tandem Mass Tags (TMT) labeling techniques to evaluate the mRNA, protein and modified phosphorylation sites between DKD mice and model ones...
September 29, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37769355/translation-reinitiation-in-c-453delc-frameshift-mutation-of-kcnh2-producing-functional-herg-k-channels-with-mild-dominant-negative-effect-in-the-heterozygote-patient-derived-ipsc-cardiomyocytes
#4
JOURNAL ARTICLE
Na Kyeong Park, Soon-Jung Park, Yun-Gwi Park, Sung-Hwan Moon, JooHan Woo, Hyun Jong Kim, Sung Joon Kim, Seong Woo Choi
BACKGROUND: The c.453delC (p.Thr152Profs*14) frameshift mutation in KCNH2 is associated with an elevated risk of Long QT syndrome (LQTS) and fatal arrhythmia. Nevertheless, the loss-of-function mechanism underlying this mutation remains unexplored and necessitates an understanding of electrophysiology. METHODS: To gain insight into the mechanism of the LQT phenotype, we conducted whole-cell patch-clamp and immunoblot assays, utilizing both a heterologous expression system and patient-derived induced pluripotent stem cell-cardiomyocytes (iPSC-CMs) with 453delC-KCNH2...
September 28, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37756636/disrupted-phase-behavior-of-fus-underlies-poly-pr-induced-dna-damage-in-amyotrophic-lateral-sclerosis
#5
JOURNAL ARTICLE
Yixin Wang, Liu Liu, Hui Chen, Yinxue Yang, Chenchen Mu, Haigang Ren, Yanli Liu, Liqiang Yu, Qi Fang, Guanghui Wang, Zongbing Hao
GGGGCC (G4C2) hexanucleotide repeat expansion (HRE) in the first intron of the chromosome 9 open reading frame 72 (C9ORF72) gene is the most common genetic cause of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). Among the five dipeptide repeat proteins translated from G4C2 HRE, arginine-rich poly-PR (proline:arginine) is extremely toxic. However, the molecular mechanism responsible for poly-PR-induced cell toxicity remains incompletely understood. Here, we found that poly-PR overexpression triggers severe DNA damage in cultured cells, primary cortical neurons, and the motor cortex of a poly-PR transgenic mouse model...
September 26, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37756622/identification-of-a-muscle-specific-isoform-of-vma21-as-a-potent-actor-in-x-linked-myopathy-with-excessive-autophagy-pathogenesis
#6
JOURNAL ARTICLE
Ilaria Cocchiararo, Olivia Cattaneo, Jayasimman Rajendran, Florent Chabry, Mélanie Cornut, Hadrien Soldati, Anne Bigot, Kamel Mamchaoui, Sara Gibertini, Axelle Bouche, Daniel J Ham, Thomas Laumonier, Alexandre Prola, Perrine Castets
Defective lysosomal acidification is responsible for a large range of multi-systemic disorders associated with impaired autophagy. Diseases caused by mutations in the VMA21 gene stand as exceptions, specifically affecting skeletal muscle (X-linked Myopathy with Excessive Autophagy, XMEA) or liver (Congenital Disorder of Glycosylation). VMA21 chaperones vacuolar (v-) ATPase assembly, which is ubiquitously required for proper lysosomal acidification. The reason VMA21 deficiencies affect specific, but divergent tissues remains unknown...
September 26, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37740403/investigation-of-common-genetic-risk-factors-between-thyroid-traits-and-breast-cancer
#7
JOURNAL ARTICLE
Elise A Lucotte, Yazdan Asgari, Pierre-Emmanuel Sugier, Mojgan Karimi, Cloé Domenighetti, Fabienne Lesueur, Anne Boland-Augé, Evgenia Ostroumova, Florent de Vathaire, Monia Zidane, Pascal Guénel, Jean-François Deleuze, Marie-Christine Boutron-Ruault, Gianluca Severi, Benoît Liquet, Thérèse Truong
Breast cancer (bc) risk is suspected to be linked to thyroid disorders, however observational studies exploring the association between bc and thyroid disorders gave conflicting results. We proposed an alternative approach by investigating the shared genetic risk factors between bc and several thyroid traits. We report a positive genetic correlation between bc and thyroxine (FT4) levels (corr = 0.13, p-value = 2.0x10-4) and a negative genetic correlation between bc and thyroid-stimulating hormone (TSH) levels (corr = -0...
September 22, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37740387/higher-incidence-of-embryonic-defects-in-mouse-offspring-conceived-with-assisted-reproduction-from-fathers-with-sperm-epimutations
#8
JOURNAL ARTICLE
Gurbet Karahan, Josée Martel, Sophia Rahimi, Mena Farag, Fernando Matias, Amanda J MacFarlane, Donovan Chan, Jacquetta Trasler
Assisted reproductive technologies (ART) account for 1-6% of births in developed countries. While most children conceived are healthy, increases in birth and genomic imprinting defects have been reported; such abnormal outcomes have been attributed to underlying parental infertility and/or the ART used. Here, we assessed whether paternal genetic and lifestyle factors that are associated with male infertility and affect the sperm epigenome, can influence ART outcomes. We examined how paternal factors, haploinsufficiency for Dnmt3L, an important co-factor for DNA methylation reactions, and/or diet-induced obesity, in combination with ART (superovulation, in vitro fertilization, embryo culture and embryo transfer), could adversely influence embryo development and DNA methylation patterning in mice...
September 22, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37738575/divergent-phenotypes-in-constitutive-versus-conditional-mutant-mouse-models-of-sifrim-hitz-weiss-syndrome
#9
JOURNAL ARTICLE
Sarah Larrigan, Shrilaxmi V Joshi, Pierre Mattar
Chromatin remodellers are among the most important risk genes associated with neurodevelopmental disorders (NDDs), however, their functions during brain development are not fully understood. Here, we focused on Sifrim-Hitz-Weiss Syndrome (SIHIWES)-an intellectual disability disorder caused by mutations in the CHD4 chromodomain helicase gene. We utilized mouse genetics to excise the Chd4 ATPase/helicase domain-either constitutively, or conditionally in the developing telencephalon. Conditional heterozygotes exhibited no change in cortical size and cellular composition and had only subtle behavioral phenotypes...
September 21, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37738569/nitric-oxide-is-required-for-lung-alveolarization-revealed-by-deficiency-of-argininosuccinate-lyase
#10
JOURNAL ARTICLE
Zixue Jin, Ming-Ming Jiang, Brendan Lee
Inhaled nitric oxide (NO) therapy has been reported to improve lung growth in premature newborns. However, the underlying mechanisms by which NO regulates lung development remain largely unclear. NO is enzymatically produced by three isoforms of nitric oxide synthase (NOS) enzymes. NOS knockout mice are useful tools to investigate NO function in the lung. Each single NOS knockout mouse does not show obvious lung alveolar phenotype, likely due to compensatory mechanisms. While mice lacking all three NOS isoforms display impaired lung alveolarization, implicating NO plays a pivotal role in lung alveolarization...
September 21, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37724694/correction-to-protective-effects-of-mitophagy-enhancers-against-amyloid-beta-induced-mitochondrial-and-synaptic-toxicities-in-alzheimer-disease
#11
(no author information available yet)
No abstract text is available yet for this article.
September 19, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37721535/erythromelalgia-caused-by-the-missense-mutation-p-arg220pro-in-an-alternatively-spliced-exon-of-scn9a-nav1-7
#12
JOURNAL ARTICLE
Jennifer R Deuis, Smitha Kumble, Angelo Keramidas, Lotten Ragnarsson, Cas Simons, Lynn Pais, Susan M White, Irina Vetter
Erythromelalgia (EM), is a familial pain syndrome characterized by episodic "burning" pain, warmth, and erythema. EM is caused by monoallelic variants in SCN9A, which encodes the voltage-gated sodium channel (NaV) NaV1.7. Over 25 different SCN9A mutations attributed to EM have been described to date, all identified in the SCN9A transcript utilizing exon 6 N. Here we report a novel SCN9A missense variant identified in seven related individuals with stereotypic episodes of bilateral lower limb pain presenting in childhood...
September 18, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37721533/cardiolipin-deficiency-leads-to-the-destabilization-of-mitochondrial-magnesium-channel-mrs2-in-barth-syndrome
#13
JOURNAL ARTICLE
Alaumy Joshi, Vishal M Gohil
Barth syndrome (BTHS) is a debilitating X-linked cardio-skeletal myopathy caused by loss-of-function mutations in TAFAZZIN, a cardiolipin (CL)-remodeling enzyme required for the maintenance of normal levels of CL species in mitochondrial membranes. At present, how perturbations in CL abundance and composition lead to many debilitating clinical presentations in BTHS patients have not been fully elucidated. Inspired by our recent findings that CL is essential for optimal mitochondrial calcium uptake, we measured the levels of other biologically important metal ions in BTHS mitochondria and found that in addition to calcium, magnesium levels are significantly reduced...
September 18, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37712894/systemic-proteome-phenotypes-reveal-defective-metabolic-flexibility-in-mecp2-mutants
#14
JOURNAL ARTICLE
Stephanie A Zlatic, Erica Werner, Veda Surapaneni, Chelsea E Lee, Avanti Gokhale, Kaela Singleton, Duc Duong, Amanda Crocker, Karen Gentile, Frank Middleton, Joseph Martin Dalloul, William Li-Yun Liu, Anupam Patgiri, Daniel Tarquinio, Randall Carpenter, Victor Faundez
Genes mutated in monogenic neurodevelopmental disorders are broadly expressed. This observation supports the concept that monogenic neurodevelopmental disorders are systemic diseases that profoundly impact neurodevelopment. We tested the systemic disease model focusing on Rett syndrome, which is caused by mutations in MECP2. Transcriptomes and proteomes of organs and brain regions from Mecp2-null mice as well as diverse MECP2-null male and female human cells were assessed. Widespread changes in the steady-state transcriptome and proteome were identified in brain regions and organs of presymptomatic Mecp2-null male mice as well as mutant human cell lines...
September 15, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37712888/a-common-single-nucleotide-variant-in-the-cytokine-receptor-like-factor-3-crlf3-gene-causes-neuronal-deficits-in-human-and-mouse-cells
#15
JOURNAL ARTICLE
Anna F Wilson, Rasha Barakat, Rui Mu, Leah L Karush, Yunqing Gao, Kelly A Hartigan, Ji-Kang Chen, Hongjin Shu, Tychele N Turner, Susan E Maloney, Steven J Mennerick, David H Gutmann, Corina Anastasaki
Single nucleotide variants in the general population are common genomic alterations, where the majority are presumed to be silent polymorphisms without known clinical significance. Using human induced pluripotent stem cell (hiPSC) cerebral organoid modeling of the 1.4 megabase Neurofibromatosis type 1 (NF1) deletion syndrome, we previously discovered that the cytokine receptor-like factor-3 (CRLF3) gene, which is co-deleted with the NF1 gene, functions as a major regulator of neuronal maturation. Moreover, children with NF1 and the CRLF3L389P variant have greater autism burden, suggesting that this gene might be important for neurologic function...
September 15, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37712203/correction-to-brain-specific-heterozygous-loss-of-function-of-atp2a2-endoplasmic-reticulum-ca2-pump-responsible-for-darier-s-disease-causes-behavioral-abnormalities-and-a-hyper-dopaminergic-state
#16
https://read.qxmd.com/read/37702024/correction-to-mitophagy-activation-repairs-leber-s-hereditary-optic-neuropathy-associated-mitochondrial-dysfunction-and-improves-cell-survival
#17
(no author information available yet)
No abstract text is available yet for this article.
September 12, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37694858/mecp2-ubiquitination-and-sumoylation-in-search-of-a-function
#18
JOURNAL ARTICLE
Ladan Kalani, Bo-Hyun Kim, John B Vincent, Juan Ausió
MeCP2 (Methyl CpG binding protein 2) is an intrinsically disordered protein that binds to methylated genome regions. The protein is a critical transcriptional regulator of the brain, and its mutations account for 95% of Rett syndrome (RTT) cases. Early studies of this neurodevelopmental disorder revealed a close connection with dysregulations of the ubiquitin system (UbS), notably as related to UBE3A, a ubiquitin ligase involved in the proteasome-mediated degradation of proteins. MeCP2 undergoes numerous post-translational modifications (PTMs), including ubiquitination and sumoylation, which, in addition to the potential functional outcomes of their monomeric forms in gene regulation and synaptic plasticity, in their polymeric organization, these modifications play a critical role in proteasomal degradation...
September 11, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37688574/cdkl5-mediated-developmental-tuning-of-neuronal-excitability-and-concomitant-regulation-of-transcriptome
#19
JOURNAL ARTICLE
Wenlin Liao, Kun-Ze Lee
Cyclin-dependent kinase-like 5 (CDKL5) is a serine-threonine kinase enriched in the forebrain to regulate neuronal development and function. Patients with CDKL5 deficiency disorder (CDD), a severe neurodevelopmental condition caused by mutations of CDKL5 gene, present early-onset epilepsy as the most prominent feature. However, spontaneous seizures have not been reported in mouse models of CDD, raising vital questions on the human-mouse differences and the roles of CDKL5 in early postnatal brains. Here, we firstly measured electroencephalographic (EEG) activities via a wireless telemetry system coupled with video-recording in neonatal mice...
September 9, 2023: Human Molecular Genetics
https://read.qxmd.com/read/37688500/correction-to-hippocampal-mutant-app-and-amyloid-beta-induced-cognitive-decline-dendritic-spine-loss-defective-autophagy-mitophagy-and-mitochondrial-abnormalities-in-a-mouse-model-of-alzheimer-s-disease
#20
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