Evidence map›Paper›PMID 19772661›Full record

ArticleGenome biology2009

Many LINE1 elements contribute to the transcriptome of human somatic cells.

Sanjida H Rangwala, Lili Zhang, Haig H Kazazian

Abstract read
In one paragraph

Article in Genome biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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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

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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

64 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. From the genome's perspective: Bearing somatic retrotransposition to leverage the regulatory potential of L1 RNAs.BioEssays : news and reviews in molecular, cellular and developmental biology · 2025
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Review
  16. Article
  17. Retrotransposons in the Mammalian Male Germline.Sexual development : genetics, molecular biology, evolution, endocrinology, embryology, and pathology of sex determination and differentiation · 2022
    Review
  18. Article
  19. Review
  20. Many Different LINE-1 Retroelements Are Activated in Bladder Cancer.International journal of molecular sciences · 2020
    Article

4 more citing papers are in PubMed but not listed here.

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

3 authors.

Sanjida H RangwalaDepartment of Genetics, University of Pennsylvania School of Medicine, Hamilton Walk, Philadelphia, Pennsylvania 19104, USA. sanjida@mail.med.upenn.edu
Lili Zhang
Haig H Kazazian

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWhile LINE1 (L1) retroelements comprise nearly 20% of the human genome, the majority are thought to have been rendered transcriptionally inactive, due to either mutation or epigenetic suppression. How many L1 elements 'escape' these forms of repression and contribute to the transcriptome of human somatic cells? We have cloned out expressed sequence tags corresponding to the 5' and 3' flanks of L1 elements in order to characterize the population of elements that are being actively transcribed. We also examined expression of a select number of elements in different individuals.

resultsWe isolated expressed sequence tags from human lymphoblastoid cell lines corresponding to 692 distinct L1 element sites, including 410 full-length elements. Four of the expression tagged sites corresponding to full-length elements from the human specific L1Hs subfamily were examined in European-American individuals and found to be differentially expressed in different family members.

conclusionsA large number of different L1 element sites are expressed in human somatic tissues, and this expression varies among different individuals. Paradoxically, few elements were tagged at high frequency, indicating that the majority of expressed L1s are transcribed at low levels. Based on our preliminary expression studies of a limited number of elements in a single family, we predict a significant degree of inter-individual transcript-level polymorphism in this class of sequence.

Indexed as

Gene Expression ProfilingGene Expression RegulationBinding SitesCell LineChromosomes, Human, Pair 1Chromosomes, Human, Pair 13Chromosomes, Human, Pair 4Chromosomes, Human, Pair 6DNA, ComplementaryExpressed Sequence TagsGenome, HumanHumansLong Interspersed Nucleotide ElementsLymphocytesReverse Transcriptase Polymerase Chain ReactionSequence Analysis, DNADNA, Complementary

Identifiers

PMID19772661
PMCPMC2768975

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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.