Evidence map›Paper›PMID 23166307›Full record

ArticleNucleic acids research2013

Deep sequencing reveals unique small RNA repertoire that is regulated during head regeneration in Hydra magnipapillata.

Srikar Krishna, Aparna Nair, Sirisha Cheedipudi, Deepak Poduval, Jyotsna Dhawan, Dasaradhi Palakodeti, Yashoda Ghanekar

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
6.7field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

39 citing papers in PubMed, 58 citations in OpenAlex.

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  4. IsJournal of developmental biology · 2025
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  6. PIWI proteins and piRNAs: key regulators of stem cell biology.Frontiers in cell and developmental biology · 2025
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  7. Genome research · 2024
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  8. Small RNAs in Cnidaria: A review.Evolutionary applications · 2023
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  9. Article
  10. Genome of the sea anemoneFrontiers in cell and developmental biology · 2022
    Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Epigenetic Regulation inFrontiers in cell and developmental biology · 2021
    Review
  17. The Biogenesis and Functions of piRNAs in Human Diseases.Molecular therapy. Nucleic acids · 2020
    Review
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Srikar KrishnaInstitute for Stem Cell Biology and Regenerative Medicine, National Centre for Biological Sciences, GKVK Campus, Bellary Road, Bangalore 560065, India.
Aparna Nair
Sirisha Cheedipudi
Deepak Poduval
Jyotsna Dhawan
Dasaradhi Palakodeti
Yashoda Ghanekar
National Centre for Biological Sciences · INInstitute for Stem Cell Biology and Regenerative Medicine · IN

Funding

Wellcome Trust
6 · The paper itself

Abstract

Small non-coding RNAs such as miRNAs, piRNAs and endo-siRNAs fine-tune gene expression through post-transcriptional regulation, modulating important processes in development, differentiation, homeostasis and regeneration. Using deep sequencing, we have profiled small non-coding RNAs in Hydra magnipapillata and investigated changes in small RNA expression pattern during head regeneration. Our results reveal a unique repertoire of small RNAs in hydra. We have identified 126 miRNA loci; 123 of these miRNAs are unique to hydra. Less than 50% are conserved across two different strains of Hydra vulgaris tested in this study, indicating a highly diverse nature of hydra miRNAs in contrast to bilaterian miRNAs. We also identified siRNAs derived from precursors with perfect stem-loop structure and that arise from inverted repeats. piRNAs were the most abundant small RNAs in hydra, mapping to transposable elements, the annotated transcriptome and unique non-coding regions on the genome. piRNAs that map to transposable elements and the annotated transcriptome display a ping-pong signature. Further, we have identified several miRNAs and piRNAs whose expression is regulated during hydra head regeneration. Our study defines different classes of small RNAs in this cnidarian model system, which may play a role in orchestrating gene expression essential for hydra regeneration.

Indexed as

AnimalsGene Expression RegulationHeadHigh-Throughput Nucleotide SequencingHydraMicroRNAsRegenerationRNA, Small InterferingRNA, Small UntranslatedSequence Analysis, RNATranscriptomeMicroRNAsRNA, Small InterferingRNA, Small Untranslated

Identifiers

PMID23166307
PMCPMC3592418
OpenAlexW2062125969

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.