Evidence map›Paper›PMID 35325505›Full record

ArticlePigment cell & melanoma research2022

Reconstructed human pigmented skin/epidermis models achieve epidermal pigmentation through melanocore transfer.

Michael J Hall, Sara Lopes-Ventura, Matilde V Neto, João Charneca, Patricia Zoio, Miguel C Seabra, Abel Oliva, Duarte C Barral

Open access · hybridAbstract read
In one paragraph

Article in Pigment cell & melanoma research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

29 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Regenerative biomaterials · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Disrupting melanin transfer: innovative strategy for anti-pigmentation drug discovery.Journal of enzyme inhibition and medicinal chemistry · 2025
    Review
  10. Review
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Poly-γ-Glutamic Acid from a NovelInternational journal of molecular sciences · 2025
    Article
  17. Article
  18. Review
  19. Review
  20. Characterization of Reconstructed Human Epidermis in a Chemically-Defined, Animal Origin-Free Cell Culture.JID innovations : skin science from molecules to population health · 2024
    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

8 authors at 3 institutions in 2 countries.

Michael J HallCEDOC - Chronic Diseases Research Centre, NOVA Medical School, NMS, Universidade NOVA de Lisboa, Lisboa, Portugal.ORCID 0000-0002-1579-1488
Sara Lopes-VenturaBiomolecular Diagnostic Laboratory, Instituto de Tecnologia Química e Biológica (ITQB), Universidade Nova de Lisboa (UNL), Oeiras, Portugal.
Matilde V NetoCEDOC - Chronic Diseases Research Centre, NOVA Medical School, NMS, Universidade NOVA de Lisboa, Lisboa, Portugal.
João CharnecaCEDOC - Chronic Diseases Research Centre, NOVA Medical School, NMS, Universidade NOVA de Lisboa, Lisboa, Portugal.
Patricia ZoioBiomolecular Diagnostic Laboratory, Instituto de Tecnologia Química e Biológica (ITQB), Universidade Nova de Lisboa (UNL), Oeiras, Portugal.
Miguel C SeabraCEDOC - Chronic Diseases Research Centre, NOVA Medical School, NMS, Universidade NOVA de Lisboa, Lisboa, Portugal.
Abel OlivaBiomolecular Diagnostic Laboratory, Instituto de Tecnologia Química e Biológica (ITQB), Universidade Nova de Lisboa (UNL), Oeiras, Portugal.
Duarte C BarralCEDOC - Chronic Diseases Research Centre, NOVA Medical School, NMS, Universidade NOVA de Lisboa, Lisboa, Portugal.ORCID 0000-0001-8867-2407
Universidade Nova de Lisboa · PTInstituto de Biologia Experimental e Tecnológica · PTUniversity College London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The skin acts as a barrier to environmental insults and provides many vital functions. One of these is to shield DNA from harmful ultraviolet radiation, which is achieved by skin pigmentation arising as melanin is produced and dispersed within the epidermal layer. This is a crucial defence against DNA damage, photo-ageing and skin cancer. The mechanisms and regulation of melanogenesis and melanin transfer involve extensive crosstalk between melanocytes and keratinocytes in the epidermis, as well as fibroblasts in the dermal layer. Although the predominant mechanism of melanin transfer continues to be debated and several plausible models have been proposed, we and others previously provided evidence for a coupled exo/phagocytosis model. Herein, we performed histology and immunohistochemistry analyses and demonstrated that a newly developed full-thickness three-dimensional reconstructed human pigmented skin model and an epidermis-only model exhibit dispersed pigment throughout keratinocytes in the epidermis. Transmission electron microscopy revealed melanocores between melanocytes and keratinocytes, suggesting that melanin is transferred through coupled exocytosis/phagocytosis of the melanosome core, or melanocore, similar to our previous observations in human skin biopsies. We, therefore, present evidence that our in vitro models of pigmented human skin show epidermal pigmentation comparable to human skin. These findings have a high value for studies of skin pigmentation mechanisms and pigmentary disorders, whilst reducing the reliance on animal models and human skin biopsies.

Indexed as

MelaninsUltraviolet RaysAnimalsEpidermisHumansKeratinocytesMelanocytesMelanosomesPigmentationSkinSkin PigmentationMelanins3D modelskeratinocytesmelanin transfermelanocytespigmentation

Identifiers

PMID35325505
PMCPMC9543140
OpenAlexW4221112776

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.