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Genetic characterization of a missense mutation in the X-linked TAF7L gene in an oligozoospermic man

ABSTRACT: Genetic characterization of a missense mutation in the X-linked TAF7L gene in an oligozoospermic man

PROVIDER: PRJNA773241 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR16518279_1.fastq.gz	Fastqsanger.gz
	SRR16518279_2.fastq.gz	Fastqsanger.gz
	SRR16518280.fastq.gz	Fastqsanger.gz
	SRR16518281_1.fastq.gz	Fastqsanger.gz
	SRR16518281_2.fastq.gz	Fastqsanger.gz

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Genetic characterization of a missense mutation in the X-linked TAF7L gene in an oligozoospermic man

Project description:We carried out genome-wide expression profiling by RNA-seq to determine whether the mutation brings about a certain influence to the transcriptomic homeostasis. Indeed, there were some differential expressions of mRNA and noncoding genes in comparison of the Taf7lD144G and wide-type testis, lending support to mutation-caused defects at molecular level.

2022-08-03 | GSE186296 | GEO

Genetic characterization of a missense mutation in the X-linked TAF7L gene identified in an oligozoospermic man†.

Project description:Although hundreds of knockout mice show infertility as a major phenotype, the causative genic mutations of male infertility in humans remain rather limited. Here, we report the identification of a missense mutation (D136G) in the X-linked TAF7L gene as a potential cause of oligozoospermia in men. The human aspartate (D136) is evolutionally conserved across species, and its change to glycine (G) is predicted to be detrimental. Genetic complementation experiments in budding yeast demonstrate that the conserved aspartate or its analogous asparagine (N) residue in yeast TAF7 is essential for cell viability and thus its mutation to G is lethal. Although the corresponding D144G substitution in the mouse Taf7l gene does not affect male fertility, RNA-seq analyses reveal alterations in transcriptomic profiles in the Taf7l (D144G) mutant testes. These results support TAF7L mutation as a risk factor for oligozoospermia in humans.

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A missense mutation in AIOLOS causes B cell deficiency by interfering with IKAROS

Project description:A missense mutation (G158R) in Ikzf3 gene resulted in defective generation of B cells in mice. Pre-B cells were profoundly decreased in homozygous mutant mice. Heterozygous mutant mice showed milder B cell developmental defects, and decreased B cells in the secondary lymphoid organs were observed. Ikzf3 encodes Aiolos, which makes heterodimer with Ikaros. Our findings indicate that the loss-of-function mutation in Aiolos hinders B cell development by interfering Ikaros' function via formation of heterodimers.

2022-02-16 | GSE126778 | GEO

Nucleocytoplasmic O-Man glycoproteome

Project description:Dynamic cycling of N-Acetylglucosamine (GlcNAc) on serine (Ser) and threonine (Thr) residues (O-GlcNAcylation) is an essential process in all eukaryotic cells except yeast, e.g Saccharomyces cerevisiae. O-GlcNAcylation modulates signaling and cellular processes in an intricate interplay with protein phosphorylation, and serves as a key sensor of nutrients by linking the hexosamine biosynthetic pathway (HBP) to cellular signaling. A longstanding conundrum has been how yeast survives without O-GlcNAcylation in light of its similar phosphorylation signaling system. We previously developed a sensitive lectin enrichment and mass spectrometry workflow for identification of the human O-Mannose (O-Man) glycoproteome, and used this to identify a pleothora of O-linked mannose glycoproteins in human cell lines including the large family of cadherins and protocadherins. Here, we applied the workflow to yeast with the aim to characterize the yeast O-Man glycoproteome, and doing so we discovered hitherto unknown O-Man glycosites on nuclear, cytoplasmic and mitochondrial proteins in Saccharomyces cerevisiae. The type of nucleocytoplasmic proteins and the localization of identified O-Man residues mirrors that of the O-GlcNAc glycoproteome in other eukaryotic cells, indicating that the two different types of O-glycosylations serve the same important biological functions. The discovery opens for exploration of the enzyme machinery that is predicted to regulate the discovered nucleocytoplasmic O-Man glycosylation. It is likely that manipulation of this type of O-Man glycosylation will have wide applications for yeast bioprocessing.

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A Missense Mutation in Kcnc3 Causes Hippocampal Learning Deficits in Mice

Project description:A Missense Mutation in Kcnc3 Causes Hippocampal Learning Deficits in Mice

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A specific missense mutation in GTF2I occurs at high frequency in thymic epithelial tumors

Project description:Next generation sequencing of 28 thymic epithelial tumors (TETs) revealed a high frequency of GTF2I missense mutation (chr7:74146970T/A) in A thymomas, a relatively indolent subtype. The GTF2I mutation was confirmed in 82% of A and 74% of AB thymomas in a series of 274 TETs but was rare in aggressive subtypes, where recurrent mutations of known cancer genes were identified. Therefore, GTF2I mutation correlated with a better survival. GTF2I Beta and Delta isoforms were expressed in TETs and both mutant isoforms were able to stimulate cell proliferation in vitro. Thymic carcinomas presented a higher number of mutations than thymomas (average 43.5 and 18.4, respectively). Recurrent mutations of known cancer genes, including TP53, CYLD, CDKN2A, BAP1 and PBRM1 were identified in thymic carcinomas. These findings will complement the diagnostic work up of these rare tumors, and also help the development of a molecular classification, and assessment of prognosis and treatment strategies. Tumor samples of 286 patients were collected from 4 different institutions: National Cancer Institute (Bethesda MD), Pisa University Hospital (Pisa, Italy), Padua University Hospital (Padua, Italy) and IRCCS Istituto Clinico Humanitas (Rozzano, Italy).

2014-06-24 | E-GEOD-57892 | biostudies-arrayexpress

Repo-Man/PP1 regulates heterochromatin formation in interphase

Project description:Repo-Man chromatin binding sites were obtained by expression of GST:Repo-Man and incubation with nucleosomes extracted from HeLa cells (GST alone signal was used as a negative control and subtracted from the GST:Repo-Man chromatin bound fraction)

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A pathogenic CtBP1 missense mutation causes altered cofactor binding and transcriptional activity

Project description:A pathogenic CtBP1 missense mutation causes altered cofactor binding and transcriptional activity

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A Missense Mutation in Kcnc3 Causes Hippocampal Learning Deficits in Mice

Project description:Although a wide variety of genetic tools have been developed to study learning and memory, the molecular basis of memory encoding remains incompletely understood. Here, we undertook an unbiased approach to identify novel genes critical for memory encoding. From a large-scale in vivo mutagenesis screen using contextual fear conditioning, we isolated a mutant, named Clueless, with spatial learning deficits. A causative missense mutation (G434V) was found in the voltage gated potassium channel, subfamily C member 3 (Kcnc3) gene in a region that encodes a transmembrane voltage sensor. Generation of a Kcnc3G434V CRISPR mutant mouse confirmed this mutation as the cause of the learning defects. While G434V had no effect on transcription, translation, or trafficking of the channel, electrophysiological analysis of the G434V Kcnc3 mutant channel revealed a complete loss of voltage-gated conductance, a broadening of the action potential, and decreased neuronal firing. Together, our findings have revealed a previously unrecognized role for Kcnc3 in learning and memory.

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TBK1 p.E696K mutation causes autophagolysosomal dysfunction and ALS/FTD-like symptoms in mice

Project description:While deleterious mutations are responsible for the vast majority of TBK1-linked ALS/FTD cases, the ALS/FTD causing missense mutation p.E696K leads to a selective loss of TBK1/optineurin binding. Knock-in of this specific missense mutation causes progressive autophagolysosomal dysfunction and an ALS/FTD-like phenotype in mice, while, as opposed to TBK1 deletion, RIPK/TNF-α-dependent necroptosis or overt inflammation are absent. Our results highlight the role of autophagolysosomal dysfunction as a therapeutic target in TBK1-ALS/FTD.

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