ArticleExperimental cell research2021
Characterization of axolotl lampbrush chromosomes by fluorescence in situ hybridization and immunostaining.
Article in Experimental cell research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 10 citations in OpenAlex.
- The 3D genomics of lampbrush chromosomes highlights the role of active transcription in chromatin organization.Nucleic acids research · 2026Article
- The first chicken oocyte nucleus whole transcriptomic profile defines the spectrum of maternal mRNA and non-coding RNA genes transcribed by the lampbrush chromosomes.Nucleic acids research · 2024Article
- Comparison of the somatic TADs and lampbrush chromomere-loop complexes in transcriptionally active prophase I oocytes.Chromosoma · 2022Article
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
Abstract
The lampbrush chromosomes (LBCs) in oocytes of the Mexican axolotl (Ambystoma mexicanum) were identified some time ago by their relative lengths and predicted centromeres, but they have never been associated completely with the mitotic karyotype, linkage maps or genome assembly. We identified 9 of the axolotl LBCs using RNAseq to identify actively transcribed genes and 13 BAC (bacterial artificial clone) probes containing pieces of active genes. Using read coverage analysis to find candidate centromere sequences, we developed a centromere probe that localizes to all 14 centromeres. Measurements of relative LBC arm lengths and polymerase III localization patterns enabled us to identify all LBCs. This study presents a relatively simple and reliable way to identify each axolotl LBC cytologically and to anchor chromosome-length sequences (from the axolotl genome assembly) to the physical LBCs by immunostaining and fluorescence in situ hybridization. Our data will facilitate a more detailed transcription analysis of individual LBC loops.
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