A method was developed for nonisotopic postembedding in situ hybridization (ISH) on ultrathin sections of frozen and of LR White resin-embedded material at the electron microscopic level. The method was successfully applied to detect Epstein-Barr virus (EBV) DNA in the P3HR1 human Burkitt's lymphoma cell line. Each of the steps in the procedure had to be optimized for successful ISH on the frozen and LR White sections. The most important conditions are described. Predigestion with proteinase K was only necessary with the resin sections. Sections were treated with sodium hydroxide to denature target DNA and were hybridized with a biotinylated probe. The probe was best detected with a primary antibody to biotin followed by a gold-conjugated secondary antibody. EBV DNA was detected in the nucleus and/or cytoplasm in 10% to 20% of P3HR1 cells. A similar percentage of cells in thin L-sectioned material prepared by routine methods showed virus particles at different stages of maturation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.3109/01913129309084038 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Characterizing Antisense Oligonucleotide-Induced Histopathology Findings in Spinal Cord of Mauritius Cynomolgus Monkeys by Molecular Localization Investigation.
Toxicol Pathol
January 2025
Novartis Institute for Biomedical Research, Cambridge, Massachusetts, USA.
The safety of a 2'--methoxyethyl antisense oligonucleotide (ASO) was investigated in Mauritius cynomolgus monkeys in a 41-week Good Laboratory Practice (GLP) toxicity study after multiple intrathecal (IT) administrations. Histopathological examination revealed ectopic formation of lymphoid follicles in the spinal cord (SC) at the injection site at all doses and the presence of granular material in neurons of the SC in high-dose animals. The granular material was seen in all the segments of the SC, but mainly in the lumbar segment and persisted at the end of the 26-week recovery period, while the lymphoid follicles showed a reversibility trend.
View Article and Find Full Text PDFLong non-coding RNA Malat1 modulates CXCR4 expression to regulate the interaction between induced neural stem cells and microglia following closed head injury.
Stem Cell Res Ther
January 2025
Department of Neurosurgery, The First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China.
Background: Closed head injury (CHI) provokes a prominent neuroinflammation that may lead to long-term health consequences. Microglia plays pivotal and complex roles in neuroinflammation-mediated neuronal insult and repair following CHI. We previously reported that induced neural stem cells (iNSCs) can block the effects of CXCL12/CXCR4 signaling on NF-κB activation in activated microglia by CXCR4 overexpression.
View Article and Find Full Text PDFIdentification of the molecular characterization and tumor microenvironment of thoracic inflammatory myofibroblastic tumors.
J Formos Med Assoc
January 2025
Department of Internal Medicine, National Taiwan University Cancer Center, Taipei, Taiwan; Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan. Electronic address:
Background: Inflammatory myofibroblastic tumors (IMTs), rare soft tissue neoplasms, are characterized by a blend of myofibroblastic proliferation and inflammatory features. While generally characterized by slow growth, IMTs can exhibit locally aggressive behavior, and in rare instances, metastasize to distant sites. This study elucidated the clinical characteristics, molecular profile, and tumor microenvironment of thoracic IMTs.
View Article and Find Full Text PDFIntroducing Diagnostic Testing for Chronic Myeloid Leukemia in a Public Hospital Setting in Western Kenya.
Arch Pathol Lab Med
January 2025
the Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis (Stohler, Vance).
Context.—: Chronic myeloid leukemia (CML) is a myeloproliferative disorder characterized by proliferation of the granulocytic cell line. The incidence of CML in Kenya is estimated at near 2000 cases annually.
View Article and Find Full Text PDFComparative analysis of and wheat repetitive elements and development of S genome-specific FISH painting.
Genome
January 2025
USDA-ARS, Wheat, Sorghum & Forage Research Unit, Lincoln, Nebraska, United States.
(2n=2x=14, genome SS) is a wild relative of wheat and a donor of useful traits for wheat improvement. Several whole-genome studies compared genic regions of from the section and wheat and found that is most closely related to the wheat B subgenome but is not its direct progenitor. The results showed that a B subgenome ancestor diverged from more than 4 MYA and either has not yet been discovered, or is extinct.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!