Cited by 152Skin and Cellular Biology ResearchHair Growth and DisordersGenetic and rare skin diseases.

Epidermal terminal differentiation depends on B lymphocyte-induced maturation protein-1

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Magnúsdóttir, Erna, Kalachikov, Sergey, Mizukoshi, Koji, Savitsky, David, Ishida-Yamamoto, Akemi, Panteleyev, Andrey A., Calame, Kathryn·2007·Proceedings of the National Academy of Sciences

Abstract

The cornified layer is a compacted lattice of lipid-embedded corneocytes that provides an organism's barrier to the external environment. Cornification is the final differentiative step for epidermal keratinocytes and involves dramatic cell condensation before death. Using conditional gene deletion in mice, we identified the transcriptional repressor Blimp-1 (B lymphocyte-induced maturation protein-1) as an important regulator of keratinocyte transition from the granular to the cornified layer. More than 250 genes are misregulated in conditional knockout epidermis, including those encoding transcription factors, signal transduction components, proteinases, and enzymes involved in lipid metabolism. Steady-state mRNA and ChIP analyses of a subset of these genes provide evidence that nfat5 , fos , prdm1 , and dusp16 are novel direct targets of Blimp-1. Identifying nfat5 as a target of Blimp-1 repression indicates that cornification involves suppression of normal osmotic regulation in granular cells. Consistently, conditional knockout mice have delayed barrier formation as embryos, enlarged granular layer cells and corneocytes, and a morphologically abnormal cornified layer. These studies provide insight into cornification, identifying transcriptional regulatory circuitry and indicating the importance of blocking osmotic homeostasis.

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Crossref · 10.1073/pnas.0707323104

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  • Blimp1 functions in terminally differentiated sebocytes as well as in granular IFE cells.

    “Alternatively, it has recently been suggested that Blimp1 functions in terminally differentiated sebocytes8 as well as in granular IFE cells9, 10.”
  • Terminally differentiated sebocytes and granular layer IFE keratinocytes are marked by the Blimp1 protein.

    “Subsequently, it was described that terminally differentiated sebocytes8, as well as granular layer IFE keratinocytes9, 10 are marked by the Blimp1 protein.”

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Research works printed but not linked: 3

  1. DA Greenhalgh, JA Rothnagel, XJ Wang, MI Quintanilla, CC Orengo, TA Gagne, DS Bundman, MA Longley, C Fisher, DR Roop Oncogene 8, 2145–2157 (1993).
  2. TC-C Kuo (Columbia University New York PhD thesis. (2005).
  3. A Pirrone, B Hager, P Fleckman Methods Mol Biol 289, 3–14 (2005).

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Authors
Magnúsdóttir, E., Kalachikov, S., Mizukoshi, K., Savitsky, D., Ishida-Yamamoto, A., Panteleyev, A. A., & Calame, K.
Affiliations
  • Columbia University (US)
  • Columbia Genome Center, and
  • Asahikawa Medical College Hospital (JP)
  • Department of Dermatology, Asahikawa Medical College, Asahikawa 078-8510, Japan
Venue
Proceedings of the National Academy of Sciences
Published
2007-09-18
Volume
104
Issue
38
Pages
14988-14993
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2148705591
Cited by
152
References
36
Citations by year
2026: 2 · 2025: 6 · 2024: 2 · 2023: 4 · 2022: 8 · 2021: 4 · 2020: 5 · 2019: 5 · 2018: 5 · 2017: 10 · 2016: 3 · 2015: 9 · 2014: 15 · 2013: 16 · 2012: 8
FWCI
5.66
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Allergy and Infectious Diseases (R01AI050659, R01 AI43576, R01-AI50659, R01AI043576)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (P30AR044535, K01 AR02204, K01AR002204)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Skin and Cellular Biology Research
  • Health Sciences › Medicine › Urology › Hair Growth and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and rare skin diseases.
Keywords
Blimp-1, keratinization, keratinocytes, cornified layer, transcriptional repression, conditional knockout mice, NFAT5, FOS, DUSP16, skin barrier, osmotic balance, granular layer, corneocytes, lipid metabolism
MeSH terms
Positive Regulatory Domain I-Binding Factor 1, Epidermal Cells, Animals, Cell Differentiation, Embryonic Structures, Epidermis, Humans, Phenotype, Repressor Proteins, RNA, Messenger, Transcription Factors, Keratinocytes, Proto-Oncogene Proteins c-fos, Gene Deletion, Mice, Knockout, Oligonucleotide Array Sequence Analysis, NFATC Transcription Factors, Mice, Dual-Specificity Phosphatases, Mitogen-Activated Protein Kinase Phosphatases

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