Browsing by Author "Lai, F. Anthony"
Now showing items 1-15 of 15
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Antigen Unmasking Is Required to Clinically Assess Levels and Localisation Patterns of Phospholipase C Zeta in Human Sperm
( MDPI , 2023 , Article)Mammalian oocyte activation is initiated by intracellular calcium (Ca2+) oscillations, driven by the testis-specific phospholipase C zeta (PLCζ). Sperm PLCζ analysis represents a diagnostic measure of sperm fertilisation ... -
Arrhythmogenic calmodulin E105A mutation alters cardiac RyR2 regulation leading to cardiac dysfunction in zebrafish
( Wiley , 2019 , Article)Calmodulin (CaM) is a universal calcium (Ca )-binding messenger that regulates many vital cellular events. In cardiac muscle, CaM associates with ryanodine receptor 2 (RyR2) and regulates excitation-contraction coupling. ... -
The Arrhythmogenic E105A CAM Mutation Dysregulates Normal Cardiac Function in Zebrafish by Altering CAM-Ca2+ and CAM-RyR2 Interactions
( Elsevier , 2019 , Article)Calmodulin (CaM) is a multifunctional calcium (Ca2+)-binding messenger that directly interacts with the cardiac ryanodine receptor 2 (RyR2), a large transmembrane Ca2+ channel that mediates Ca2+ release from the sarcoplasmic ... -
Calmodulin Interacts and Regulates Enzyme Activity of the Mammalian Sperm Phospholipase C
( Elsevier , 2017 , Article)Sperm-specific Phospholipase C zeta (PLCζ) is widely considered to be the sole, physiological stimulus responsible for the generation of Ca2+ oscillations that induce egg activation and early embryo development during ... -
Defective Interaction of Cam with RyR2 Cam-Binding Pocket Might Contribute to Arrhythmogenic Cardiac Disease
( Elsevier , 2020 , Article)Ryanodine receptor 2 (RyR2) is a large transmembrane calcium (Ca2+) release channel that mediates Ca2 release from the sarcoplasmic reticulum to activate cardiac muscle contraction. Calmodulin (CaM) regulation of RyR2 is ... -
Editorial: The role of calcium signaling in gametogenesis and early embryogenesis
( Frontiers Media , 2022 , Other)Calcium homeostasis exerts a profound role in determining the quality of gametogenesis, the resultant efficacy of fertilisation and ultimately the competency of embryogenesis. Perhaps no other single ion plays such a ... -
Essential Role of Sperm-Specific PLC-Zeta in Egg Activation and Male Factor Infertility: An Update.
( Frontiers Media , 2020 , Article Review)Sperm-specific phospholipase C zeta (PLCζ) is widely considered to be the physiological stimulus responsible for generating calcium (Ca) oscillations that induce egg activation and early embryonic development during mammalian ... -
Identification of an amino-terminus determinant critical for ryanodine receptor/Ca2+ release channel function.
( Oxford University Press , 2020 , Article)The cardiac ryanodine receptor (RyR2), which mediates intracellular Ca2+ release to trigger cardiomyocyte contraction, participates in development of acquired and inherited arrhythmogenic cardiac disease. This study was ... -
Impaired Binding to Junctophilin-2 and Nanostructural Alteration in CPVT Mutation
( American Heart Association , 2021 , Article)RATIONALE: Catecholaminergic polymorphic ventricular tachycardia is a rare disease, manifested by syncope or sudden death in children or young adults under stress conditions. Mutations in the Ca2+ release channel/type 2 ... -
Life-threatening arrhythmogenic CaM mutations disrupt CaM binding to a distinct RyR2 CaM-binding pocket
( Elsevier , 2023 , Article)Calmodulin (CaM) modulates the activity of several proteins that play a key role in excitation-contraction coupling (ECC). In cardiac muscle, the major binding partner of CaM is the type-2 ryanodine receptor (RyR2) and ... -
Male infertility-linked point mutation reveals a vital binding role for the C2 domain of sperm PLC?
( Portland Press Ltd , 2017 , Article)Sperm-specific phospholipase C zeta (PLC?) is widely considered to be the physiological stimulus that evokes intracellular calcium (Ca2+) oscillations that are essential for the initiation of egg activation during mammalian ... -
Mutations in PLCδ1 associated with hereditary leukonychia display divergent PIP2 hydrolytic function
( Blackwell Publishing Ltd , 2016 , Article)Hereditary leukonychia is a rare genetic nail disorder characterized by distinctive whitening of the nail plate of all 20 nails. Hereditary leukonychia may exist as an isolated feature, or in simultaneous occurrence with ... -
Phospholipase C zeta profiles are indicative of optimal sperm parameters and fertilisation success in patients undergoing fertility treatment.
( wiley , 2020 , Article)Oocyte activation is driven by intracellular calcium (Ca ) oscillations induced by sperm-specific PLCζ, abrogation of which causes oocyte activation deficiency in humans. Clinical PLCζ investigations have been limited to ... -
SPERM FACTORS AND EGG ACTIVATION The structure and function relationship of sperm PLCZ1
( BioScientifica , 2022 , Article Review)In 2002, sperm-specific phospholipase C zeta1 (PLCZ1) was discovered and through these 20 years, it has been established as the predominant sperm oocyte-activating factor. PLCZ1 cRNA expression or direct protein microinjection ... -
The role and mechanism of action of sperm PLC-zeta in mammalian fertilisation
( Portland Press Ltd , 2017 , Article Review)At mammalian fertilisation, the fundamental stimulus that triggers oocyte (egg) activation and initiation of early embryonic development is an acute rise of the intracellular-free calcium (Ca2+) concentration inside the ...
