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ZFP57 maintains genomic imprinting in mouse embryos and ES cells. To test its roles during iPS reprogramming,we derived iPS clones by utilizing retroviral infection to express reprogramming factors in mouse MEF cells. After analyzing four imprinted regions, we found that parentally derived DNA methylation imprint was largely maintained in the iPS clones with Zfp57 but missing in those without maternal or zygotic Zfp57. Intriguingly, DNA methylation imprint was lost at the Peg1 and Peg3 but retained at the Snrpn and Dlk1-Dio3 imprinted regions in the iPS clones without zygotic Zfp57. This finding will be pursued in future studies.
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http://dx.doi.org/10.1016/j.scr.2016.01.018 | DOI Listing |
Hum Pathol
August 2025
Department of Radiation Oncology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Lucknow- 226010.
Background: Programmed death ligand 1 (PD-L1) is essential for immune evasion and serves as a significant biomarker for immunotherapy in oral squamous cell carcinoma (OSCC). Nevertheless, the changes in its expression after neoadjuvant chemotherapy (NACT) are not well understood. This research sought to assess the variations in PD-L1 expression between matched pretreatment biopsy samples and post-NACT surgical specimens, while also correlating these results with clinicopathological characteristics.
View Article and Find Full Text PDFStem Cell Res Ther
August 2025
Regenerative Medicine Project, Tokyo Metropolitan Institute of Medical Science, Setagaya, Tokyo, 156-8506, Japan.
Stem Cells Dev
August 2025
Division of Metabolism and Endocrinology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan.
The study of skeletal muscle disorders in patients with mitochondrial diseases is crucial for gaining insights into disease physiology; however, their molecular mechanisms have not been fully elucidated. We previously established human-induced pluripotent stem (iPS) cells in two patients with the mitochondrial DNA (mtDNA) A3243G mutation and isolated iPS cell clones with either undetectable or high levels of mutations. In the present study, we established skeletal muscle cells from iPS cells with mutation-high and mutation-undetectable clones and comparatively analyzed their mitochondrial functions.
View Article and Find Full Text PDFInt Microbiol
June 2025
Bacteriology Service, Luque General Hospital, Luque, Paraguay.
Introduction: Invasive meningococcal disease (IMD) remains a significant public health concern and one of the leading causes of morbidity and mortality worldwide. In Paraguay, IMD continues to pose a serious health challenge.
Methodology: A retrospective, descriptive, cross-sectional observational study was conducted.
Stem Cell Res Ther
June 2025
Regenerative Medicine Project, Tokyo Metropolitan Institute of Medical Science, Setagaya, Tokyo, 156-8506, Japan.
Background: Genome editing in human iPS cells is a powerful approach in regenerative medicine. CRISPR-Cas9 is the most common genome editing tool, but it often induces byproduct insertions and deletions in addition to the desired edits. Therefore, genome editing of iPS cells produces diverse genotypes.
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