Prevention of UVB radiation-induced epidermal damage by expression of heat shock protein 70

Minoru Matsuda, Tatsuya Hoshino, Yasuhiro Yamashita, Ken Ichiro Tanaka, Daisuke Maji, Keizo Sato, Hiroaki Adachi, Gen Sobue, Hironobu Ihn, Yoko Funasaka, Tohru Mizushima

Research output: Contribution to journalArticle

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Abstract

Irradiation with UV light, especially UVB, causes epidermal damage via the induction of apoptosis, inflammatory responses, and DNA damage. Various stressors, including UV light, induce heat shock proteins (HSPs) and the induction, particularly that of HSP70, provides cellular resistance to such stressors. The anti-inflammatory activity of HSP70, such as its inhibition of nuclear factor kappa B (NF-κB), was recently revealed. These in vitro results suggest that HSP70 protects against UVB-induced epidermal damage. Here we tested this idea by using transgenic mice expressing HSP70 and cultured keratinocytes. Irradiation of wild-type mice with UVB caused epidermal damage such as induction of apoptosis, which was suppressed in transgenic mice expressing HSP70. UVB-induced apoptosis in cultured keratinocytes was suppressed by overexpression of HSP70. Irradiation of wild-type mice with UVB decreased the cutaneous level of IκB-α (an inhibitor of NF-κB) and increased the infiltration of leukocytes and levels of pro-inflammatory cytokines and chemokines in the epidermis. These inflammatory responses were suppressed in transgenic mice expressing HSP70. In vitro, the overexpression of HSP70 suppressed the expression of pro-inflammatory cytokines and chemokines and increased the level of IκB-α in keratinocytes irradiated with UVB. UVB induced an increase in cutaneous levels of cyclobutane pyrimidine dimers and 8-hydroxy-2′-deoxyguanosine, both of which were suppressed in transgenic mice expressing HSP70. This study provides genetic evidence that HSP70 protects the epidermis from UVB-induced radiation damage. The findings here also suggest that the protective action of HSP70 is mediated by anti-apoptotic, anti-inflammatory, and anti-DNA damage effects.

Original languageEnglish
Pages (from-to)5848-5858
Number of pages11
JournalJournal of Biological Chemistry
Volume285
Issue number8
DOIs
Publication statusPublished - 2010 Feb 19
Externally publishedYes

Fingerprint

HSP70 Heat-Shock Proteins
Transgenic Mice
NF-kappa B
Keratinocytes
Irradiation
Radiation
Apoptosis
Chemokines
Ultraviolet radiation
Anti-Inflammatory Agents
Ultraviolet Rays
Epidermis
Cytokines
DNA Damage
Pyrimidine Dimers
DNA
Radiation damage
Heat-Shock Proteins
Infiltration
Skin

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology
  • Molecular Biology
  • Medicine(all)

Cite this

Matsuda, M., Hoshino, T., Yamashita, Y., Tanaka, K. I., Maji, D., Sato, K., ... Mizushima, T. (2010). Prevention of UVB radiation-induced epidermal damage by expression of heat shock protein 70. Journal of Biological Chemistry, 285(8), 5848-5858. https://doi.org/10.1074/jbc.M109.063453

Prevention of UVB radiation-induced epidermal damage by expression of heat shock protein 70. / Matsuda, Minoru; Hoshino, Tatsuya; Yamashita, Yasuhiro; Tanaka, Ken Ichiro; Maji, Daisuke; Sato, Keizo; Adachi, Hiroaki; Sobue, Gen; Ihn, Hironobu; Funasaka, Yoko; Mizushima, Tohru.

In: Journal of Biological Chemistry, Vol. 285, No. 8, 19.02.2010, p. 5848-5858.

Research output: Contribution to journalArticle

Matsuda, M, Hoshino, T, Yamashita, Y, Tanaka, KI, Maji, D, Sato, K, Adachi, H, Sobue, G, Ihn, H, Funasaka, Y & Mizushima, T 2010, 'Prevention of UVB radiation-induced epidermal damage by expression of heat shock protein 70', Journal of Biological Chemistry, vol. 285, no. 8, pp. 5848-5858. https://doi.org/10.1074/jbc.M109.063453
Matsuda, Minoru ; Hoshino, Tatsuya ; Yamashita, Yasuhiro ; Tanaka, Ken Ichiro ; Maji, Daisuke ; Sato, Keizo ; Adachi, Hiroaki ; Sobue, Gen ; Ihn, Hironobu ; Funasaka, Yoko ; Mizushima, Tohru. / Prevention of UVB radiation-induced epidermal damage by expression of heat shock protein 70. In: Journal of Biological Chemistry. 2010 ; Vol. 285, No. 8. pp. 5848-5858.
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