Evidence map›Paper›PMID 7657706›Full record

ArticleThe Journal of cell biology1995

Differential expression of two basement membrane collagen genes, COL4A6 and COL4A5, demonstrated by immunofluorescence staining using peptide-specific monoclonal antibodies.

Y Ninomiya, M Kagawa, K Iyama, I Naito, Y Kishiro, J M Seyer, M Sugimoto, T Oohashi, Y Sado

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed
5.3field-weighted citation impact, top 3% 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

82 citing papers in PubMed, 283 citations in OpenAlex.

  1. Review
  2. Article
  3. An Alport variant illuminates the bioactivity of the collagen IVbioRxiv : the preprint server for biology · 2026
    Article
  4. Article
  5. Collagen IV in Gould syndrome and Alport syndrome.Nature reviews. Nephrology · 2025
    Review
  6. Article
  7. Article
  8. Collagen IV of basement membranes: II. Emergence of collagen IVThe Journal of biological chemistry · 2023
    Article
  9. Identification of unique α4 chain structure and conserved antiangiogenic activity of α3NC1 type IV collagen in zebrafish.Developmental dynamics : an official publication of the American Association of Anatomists · 2023
    Article
  10. Article
  11. Review
  12. Article
  13. Identification of a novel pathogenicBiomedical reports · 2021
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Peroxidasin-mediated bromine enrichment of basement membranes.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  20. Article

22 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

9 authors at 1 institution in 1 country.

Y NinomiyaDepartment of Molecular Biology, Okayama University Medical School, Japan.
M Kagawa
K Iyama
I Naito
Y Kishiro
J M Seyer
M Sugimoto
T Oohashi
Y Sado
Okayama University · JP

Funding

EXTRACELLULAR MATRIX GENE EXPRESSION IN CORNEAR01EY007334 · NEI · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI OLSEN, BJORN R · 1987 to 1994
–
NEI NIH HHS EY07334
6 · The paper itself

Abstract

Genes for the human alpha 5(IV) and alpha 6(IV) collagen chains have a unique arrangement in that they are colocalized on chromosome Xq22 in a head-to-head fashion and appear to share a common bidirectional promoter. In addition we reported a novel observation that the COL4A6 gene is transcribed from two alternative promoters in a tissue-specific manner (Sugimoto, M., T. Oohashi, and Y. Ninomiya. 1994. Proc. Natl. Acad. Sci. USA. 91:11679-11683). To know whether the translation products of both genes are colocalized in various tissues, we raised alpha 5(IV) and alpha 6(IV) chain-specific rat monoclonal antibodies against synthetic peptides reflecting sequences near the carboxy terminus of each noncollagenous (NC)1 domain. By Western blotting alpha 6(IV) chain-specific antibody recognized 27-kD monomers and associated dimers of the human type IV collagen NC1 domain, which is the first demonstration of the presence in tissues of the alpha 6(IV) polypeptide as predicted from its cDNA sequence. Immunofluorescence studies using anti-alpha 6(IV) antibody demonstrated that in human adult kidney the alpha 6(IV) chain was never detected in the glomerular basement membrane, whereas the basement membranes of the Bowman's capsules and distal tubules were positive. The staining pattern of the glomerular basement membrane was quite different from that obtained with the anti-alpha 5(IV) peptide antibody. The alpha 5(IV) and alpha 6(IV) chains were colocalized in the basement membrane in the skin, smooth muscle cells, and adipocytes; however, little if any reaction was seen in basement membranes of cardiac muscles and hepatic sinusoidal endothelial cells. Thus, both genes are expressed in a tissue-specific manner, perhaps due to the unique function of the bidirectional promoter for both genes, which is presumably different from that for COL4A1 and COL4A2.

Indexed as

AdipocytesAmino Acid SequenceAntibodies, MonoclonalAntibody SpecificityBasement MembraneBlotting, WesternCollagenFluorescent Antibody TechniqueGene ExpressionHumansKidneyLiverMolecular Sequence DataMusclesNephritis, HereditaryPeptidesAntibodies, MonoclonalCollagenPeptides

Identifiers

PMID7657706
PMCPMC2120565
OpenAlexW2154558576

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.