15-Lipoxygenase-2 expression in benign and neoplastic sebaceous glands and other cutaneous adnexa

Scott B. Shappell, Diane S. Keeney, Jing Zhang, Robert Page, Sandy J. Olson, Alan R. Brash

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Abstract

15-Lipoxygenase-2 has a limited tissue distribution in epithelial tissues, with mRNA detected in skin, cornea, lung, and prostate. It was originally cloned from human hair rootlets. In this study the distribution of 15-lipoxygenase-2 was characterized in human skin using immunohistochemistry and in situ hybridization. Strong uniform 15-lipoxygenase-2 in situ hybridization (n = 6) and immunostaining (n = 16) were observed in benign cutaneous sebaceous glands, with expression in differentiated secretory cells. Strong 15-lipoxygenase-2 immunostaining was also observed in secretory cells of apocrine and eccrine glands. Variable reduced immunostaining was observed in skin-derived sebaceous neoplasms (n = 8). In the eyelid, Meibomian glands were uniformly negative for 15-lipoxygenase-2 in all cases examined (n = 9), and sebaceous carcinomas apparently derived from Meibomian glands were also negative (n = 12). The mechanisms responsible for differential expression in cutaneous sebaceous vs eyelid Meibomian glands remain to be established. In epidermis, positive immunostaining was observed in the basal cell layer in normal skin, whereas five examined basal cell carcinomas were negative. Thus, the strongest 15-lipoxygenase-2 expression is in the androgen regulated secretory cells of sebaceous, apocrine, and eccrine glands. This compares with the prostate, in which 15-lipoxygenase-2 is expressed in differentiated prostate secretory cells (and reduced in the majority of prostate adenocarcinomas). The product of 15-lipoxygenase-2, 15-hydroxyeicosatetraenoic acid, may be a ligand for the nuclear receptor peroxisome proliferator activated receptor-γ, which is expressed in sebocytes, and contribute to secretory differentiation in androgen regulated tissues such as prostate and sebaceous glands.

Original languageEnglish (US)
Pages (from-to)36-43
Number of pages8
JournalJournal of Investigative Dermatology
Volume117
Issue number1
DOIs
StatePublished - Jan 1 2001

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Arachidonate 15-Lipoxygenase
Sebaceous Glands
Lipoxygenase
Skin
Meibomian Glands
Prostate
Apocrine Glands
Eccrine Glands
Eyelids
Tissue
Androgens
In Situ Hybridization
Cells
Hydroxyeicosatetraenoic Acids
Peroxisome Proliferator-Activated Receptors
Basal Cell Carcinoma
Tissue Distribution
Cytoplasmic and Nuclear Receptors
Epidermis
Hair

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology
  • Dermatology
  • Cell Biology

Cite this

15-Lipoxygenase-2 expression in benign and neoplastic sebaceous glands and other cutaneous adnexa. / Shappell, Scott B.; Keeney, Diane S.; Zhang, Jing; Page, Robert; Olson, Sandy J.; Brash, Alan R.

In: Journal of Investigative Dermatology, Vol. 117, No. 1, 01.01.2001, p. 36-43.

Research output: Contribution to journalArticle

Shappell, Scott B. ; Keeney, Diane S. ; Zhang, Jing ; Page, Robert ; Olson, Sandy J. ; Brash, Alan R. / 15-Lipoxygenase-2 expression in benign and neoplastic sebaceous glands and other cutaneous adnexa. In: Journal of Investigative Dermatology. 2001 ; Vol. 117, No. 1. pp. 36-43.
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