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http://dx.doi.org/10.1186/s13062-023-00417-2 | DOI Listing |
Circ Genom Precis Med
January 2025
Centre for Heart Lung Innovation, University of British Columbia, Vancouver. (K.H., M.A., L.R., Y.L., A.S., H.H., L.R.B., Z.W.L.).
Background: Protein-truncating mutations in the titin gene are associated with increased risk of atrial fibrillation. However, little is known about the underlying pathophysiology.
Methods: We identified a heterozygous titin truncating variant (TTNtv) in a patient with unexplained early onset atrial fibrillation and normal ventricular function.
PeerJ
January 2025
Genomic Mechanisms of Ontogenesis, Institute of Cytology and Genetics, Novosibirsk, Novosibirsk, Russia.
Copy number variations of the human gene, resulting from megabase-scale microdeletions or microduplications in the 3p26.3 region, are frequently implicated in neurodevelopmental disorders such as intellectual disability and developmental delay. However, duplication of the full-length human gene presents with variable penetrance, resulting in phenotypes that range from neurodevelopmental disorders to no visible pathologies, even within the same family.
View Article and Find Full Text PDFBrain Behav
January 2025
Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia, Canada.
Introduction: Patients with bipolar disorder (BD) demonstrate episodic memory deficits, which may be hippocampal-dependent and may be attenuated in lithium responders. Induced pluripotent stem cell-derived CA3 pyramidal cell-like neurons show significant hyperexcitability in lithium-responsive BD patients, while lithium nonresponders show marked variance in hyperexcitability. We hypothesize that this variable excitability will impair episodic memory recall, as assessed by cued retrieval (pattern completion) within a computational model of the hippocampal CA3.
View Article and Find Full Text PDFStem Cell Res
December 2024
Agnes Ginges Centre for Molecular Cardiology at Centenary Institute, The University of Sydney, Sydney, Australia; Faculty of Medicine and Health, The University of Sydney, Sydney, Australia. Electronic address:
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is an inherited cardiac disease characterised by adrenergic-induced arrhythmias. The leading causes of CPVT are pathogenic variants in cardiac ryanodine receptor 2 (RYR2) and rarely, in cardiac calsequestrin-2 (CASQ2) genes, which are major components of Ca handling in cardiac myocytes. This resource builds upon an established induced pluripotent stem cell line generated from a family with autosomal dominant CPVT due to a heterozygous variant in CASQ2 c.
View Article and Find Full Text PDFStem Cell Res
January 2025
Programme in Molecular Medicine, Research Institute for SickKids Hospital, Toronto, Canada; Department of Clinical and Experimental Medicine, University of Foggia, Italy. Electronic address:
Cystic Fibrosis (CF) is a life-shortening disease that is caused by mutations in the CFTR gene, a gene that is expressed in multiple organs. There are several primary tissue models of CF disease, including nasal epithelial cultures and rectal organoids, that are effective in reporting the potential efficacy of mutation-targeted therapies called CFTR modulators. However, there is the well-documented variation in tissue dependent, therapeutic response amongst CF patients, even those with the same CF-causing mutation.
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