hPSC Genetic Analysis Kit
qPCR analysis kit for detecting the majority of karyotypic abnormalities reported in human ESCs and iPSCs
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Products for Your Protocol
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Protocols and Documentation.
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Axygen® Sealing Film for Quantitative Real-T...Non-sterile, ultra-clear, pressure-sensitive sealing film for quantitative real-time PCR (qPCR)
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Genomic DNA Purification KitFor purification of genomic DNA from cells or tissue
Overview
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Protocols and Documentation
Find supporting information and directions for use in the Product Information Sheet or explore additional protocols below.
Applications
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Resources and Publications
Educational Materials (38)
Publications (19)
De novo EHMT2 variants cause an autosomal dominant EHMT2-related Kleefstra syndrome via loss of G9a methyltransferase activity.
Nature communications 2026 Jul
Abstract
EHMT1 and EHMT2 genes encode human euchromatin histone lysine methyltransferase 1 and 2 (EHMT1 alias GLP; EHMT2 alias G9a) that form heteromeric GLP/G9a complexes with essential roles in epigenetic regulation of gene expression. While EHMT1 haploinsufficiency has been established as the cause of Kleefstra syndrome 1, the pathogenesis of G9a dysfunction in human disease remains largely unknown. We identified seven de novo EHMT2 variants in patients with clinical presentation, episignatures, histone modifications and transcriptomic profiles similar to those of Kleefstra syndrome 1. In vitro studies reveal that these variants encode for structurally stable G9a proteins that are catalytically incompetent due to aberrant interactions either with histone H3 tail or with S-adenosylmethionine. Heterozygous mice carrying a patient-derived variant exhibit growth retardation, facial/skull dysmorphia and aberrant behavior. Here we report pathogenic EHMT2 variants that likely exert dominant-negative effect on GLP/G9a complexes and thus genocopy the EHMT1 haploinsufficiency via a distinct molecular mechanism, defining an autosomal dominant EHMT2-related Kleefstra syndrome.
Kat5 cKO mouse replicates biological domain signatures associated with Alzheimer's disease.
Alzheimer's & dementia : the journal of the Alzheimer's Association 2026 Jul
Abstract
INTRODUCTION: Alzheimer's disease (AD) can be caused by autosomal-dominant familial Alzheimer's disease (FAD) mutations in amyloid precursor protein (APP) or presenilin-1 and 2, which form an enzyme substrate complex. KAT5 binds to the APP intracellular domain. Recent reports of decreased γ-secretase activity in FAD mutants support KAT5 membrane sequestration. METHODS: We compare the hippocampal transcriptome profiles of the Kat5 brain-specific knockout (KO) mouse to multiple AD datasets through alignment with the TREAT-AD AD biological domains. We examine KAT5 subcellular localization in human wild-type and AD neurons. RESULTS: The Kat5 KO mouse demonstrates downregulation of synaptic genes, metabolic pathways, and upregulation of DNA replication and repair, cell cycle, and immune response genes. We see similar profiles in Kat5 and comparative AD datasets. KAT5 is restricted to the cytosol in human AD neurons. DISCUSSION: This analysis supports the hypothesis that KAT5 nuclear signaling downstream of APP cleavage plays a pivotal role in neuronal homeostasis.
A stem cell-based toolkit to model Angelman syndrome caused by paternal uniparental disomy of chromosome 15
Human Cell 2025 Sep
Abstract
Angelman syndrome is a rare neurodevelopmental disorder caused by the loss of function of the maternally inherited UBE3A gene within the chr15q11-q13 region. This gene is subjected to a tissue-specific form of genomic imprinting leading to the silencing of the paternal allele in neurons. Angelman syndrome can result from various (epi)genetic mechanisms, with paternal uniparental disomy of chromosome 15 (patUPD15) being one of the rarest and least studied due to the absence of suitable models. To address this gap, we generated three independent induced pluripotent stem cell (iPSC) lines from individuals with Angelman syndrome caused by patUPD15, alongside genetically matched unaffected familial controls. Peripheral blood mononuclear cells (PBMCs) were reprogrammed into iPSCs using a non-integrative Sendai virus-based approach expressing the Yamanaka factors. All iPSC lines underwent rigorous quality control, confirming stem cell identity, trilineage differentiation potential, and genetic and epigenetic integrity. This newly established iPSC toolkit provides a powerful platform to investigate the molecular underpinnings of Angelman syndrome caused by patUPD15, paving the way for future translational research and therapeutic development tailored for this understudied form of the disorder. The online version contains supplementary material available at 10.1007/s13577-025-01287-8.
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PRODUCTS ARE FOR RESEARCH USE ONLY AND NOT INTENDED FOR HUMAN OR ANIMAL DIAGNOSTIC OR THERAPEUTIC USES UNLESS OTHERWISE STATED. FOR ADDITIONAL INFORMATION ON QUALITY AT STEMCELL, REFER TO WWW.STEMCELL.COM/COMPLIANCE.
PRODUCTS ARE FOR RESEARCH USE ONLY AND NOT INTENDED FOR HUMAN OR ANIMAL DIAGNOSTIC OR THERAPEUTIC USES UNLESS OTHERWISE STATED. FOR ADDITIONAL INFORMATION ON QUALITY AT STEMCELL, REFER TO WWW.STEMCELL.COM/COMPLIANCE.
