Epidermal Barrier Development via Corneoptosis: A Unique Form of Cell Death in Stratum Granulosum Cells

Epidermal development is responsible for the formation of the outermost layer of the skin, the epidermis. The establishment of the epidermal barrier is a critical aspect of mammalian development. Proper formation of the epidermis, which is composed of stratified squamous epithelial cells, is essenti...

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Main Author: Takeshi Matsui
Format: Article
Language:English
Published: MDPI AG 2023-11-01
Series:Journal of Developmental Biology
Subjects:
Online Access:https://www.mdpi.com/2221-3759/11/4/43
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author Takeshi Matsui
author_facet Takeshi Matsui
author_sort Takeshi Matsui
collection DOAJ
description Epidermal development is responsible for the formation of the outermost layer of the skin, the epidermis. The establishment of the epidermal barrier is a critical aspect of mammalian development. Proper formation of the epidermis, which is composed of stratified squamous epithelial cells, is essential for the survival of terrestrial vertebrates because it acts as a crucial protective barrier against external threats such as pathogens, toxins, and physical trauma. In mammals, epidermal development begins from the embryonic surface ectoderm, which gives rise to the basal layer of the epidermis. This layer undergoes a series of complex processes that lead to the formation of subsequent layers, including the stratum intermedium, stratum spinosum, stratum granulosum, and stratum corneum. The stratum corneum, which is the topmost layer of the epidermis, is formed by corneoptosis, a specialized form of cell death. This process involves the transformation of epidermal keratinocytes in the granular layer into flattened dead cells, which constitute the protective barrier. In this review, we focus on the intricate mechanisms that drive the development and establishment of the mammalian epidermis to gain insight into the complex processes that govern this vital biological system.
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spelling doaj.art-dda0096609b946c5956ccf5b5702f2782023-12-22T14:17:56ZengMDPI AGJournal of Developmental Biology2221-37592023-11-011144310.3390/jdb11040043Epidermal Barrier Development via Corneoptosis: A Unique Form of Cell Death in Stratum Granulosum CellsTakeshi Matsui0Laboratory for Evolutionary Cell Biology of the Skin, School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1, Katakura-cho, Tokyo 192-0982, JapanEpidermal development is responsible for the formation of the outermost layer of the skin, the epidermis. The establishment of the epidermal barrier is a critical aspect of mammalian development. Proper formation of the epidermis, which is composed of stratified squamous epithelial cells, is essential for the survival of terrestrial vertebrates because it acts as a crucial protective barrier against external threats such as pathogens, toxins, and physical trauma. In mammals, epidermal development begins from the embryonic surface ectoderm, which gives rise to the basal layer of the epidermis. This layer undergoes a series of complex processes that lead to the formation of subsequent layers, including the stratum intermedium, stratum spinosum, stratum granulosum, and stratum corneum. The stratum corneum, which is the topmost layer of the epidermis, is formed by corneoptosis, a specialized form of cell death. This process involves the transformation of epidermal keratinocytes in the granular layer into flattened dead cells, which constitute the protective barrier. In this review, we focus on the intricate mechanisms that drive the development and establishment of the mammalian epidermis to gain insight into the complex processes that govern this vital biological system.https://www.mdpi.com/2221-3759/11/4/43epidermal developmentstratum granulosumstratum corneumepidermal barriercorneoptoiscornification
spellingShingle Takeshi Matsui
Epidermal Barrier Development via Corneoptosis: A Unique Form of Cell Death in Stratum Granulosum Cells
Journal of Developmental Biology
epidermal development
stratum granulosum
stratum corneum
epidermal barrier
corneoptois
cornification
title Epidermal Barrier Development via Corneoptosis: A Unique Form of Cell Death in Stratum Granulosum Cells
title_full Epidermal Barrier Development via Corneoptosis: A Unique Form of Cell Death in Stratum Granulosum Cells
title_fullStr Epidermal Barrier Development via Corneoptosis: A Unique Form of Cell Death in Stratum Granulosum Cells
title_full_unstemmed Epidermal Barrier Development via Corneoptosis: A Unique Form of Cell Death in Stratum Granulosum Cells
title_short Epidermal Barrier Development via Corneoptosis: A Unique Form of Cell Death in Stratum Granulosum Cells
title_sort epidermal barrier development via corneoptosis a unique form of cell death in stratum granulosum cells
topic epidermal development
stratum granulosum
stratum corneum
epidermal barrier
corneoptois
cornification
url https://www.mdpi.com/2221-3759/11/4/43
work_keys_str_mv AT takeshimatsui epidermalbarrierdevelopmentviacorneoptosisauniqueformofcelldeathinstratumgranulosumcells