Serial Analysis of Gene Expression in Differentiated Cultures of Human Epidermal Keratinocytes
Keratinocyte gene expression was surveyed more comprehensively than before, by means of serial analysis of gene expression. A total of 25,694 tags derived from expressed mRNA, were analyzed in a model for normal differentiation and in a model where cultured keratinocytes were stimulated for a prolon...
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description | Keratinocyte gene expression was surveyed more comprehensively than before, by means of serial analysis of gene expression. A total of 25,694 tags derived from expressed mRNA, were analyzed in a model for normal differentiation and in a model where cultured keratinocytes were stimulated for a prolonged period of time with tumor necrosis factor-α, thus mimicking aberrant differentiation in the context of cutaneous inflammation. Serial analysis of gene expression revealed many transcripts derived from unknown genes and a large number of genes that are not known to be expressed in keratinocytes; furthermore, these data provide quantitative information about the relative abundance of transcripts, allowing the identification of differentially expressed genes. A major part of the identified transcripts accounted for genes involved in energy metabolism and protein synthesis. A large proportion of all transcripts (6%) corresponded to genes associated with terminal differentiation and barrier formation. Another highly expressed functional group of genes (2% of all transcripts) corresponded to proteins involved in host protection such as antimicrobial proteins and proteinase inhibitors. Three of these genes were not known to be expressed in keratinocytes, and some were upregulated after prolonged tumor necrosis factor-α exposure. Our data on expressed genes in keratinocytes are consistent with the known function of human epidermis, and provide a first step to generate a transcriptome of human keratinocytes. |
doi_str_mv | 10.1046/j.1523-1747.2001.00218.x |
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A total of 25,694 tags derived from expressed mRNA, were analyzed in a model for normal differentiation and in a model where cultured keratinocytes were stimulated for a prolonged period of time with tumor necrosis factor-α, thus mimicking aberrant differentiation in the context of cutaneous inflammation. Serial analysis of gene expression revealed many transcripts derived from unknown genes and a large number of genes that are not known to be expressed in keratinocytes; furthermore, these data provide quantitative information about the relative abundance of transcripts, allowing the identification of differentially expressed genes. A major part of the identified transcripts accounted for genes involved in energy metabolism and protein synthesis. A large proportion of all transcripts (6%) corresponded to genes associated with terminal differentiation and barrier formation. Another highly expressed functional group of genes (2% of all transcripts) corresponded to proteins involved in host protection such as antimicrobial proteins and proteinase inhibitors. Three of these genes were not known to be expressed in keratinocytes, and some were upregulated after prolonged tumor necrosis factor-α exposure. Our data on expressed genes in keratinocytes are consistent with the known function of human epidermis, and provide a first step to generate a transcriptome of human keratinocytes.</description><identifier>ISSN: 0022-202X</identifier><identifier>EISSN: 1523-1747</identifier><identifier>DOI: 10.1046/j.1523-1747.2001.00218.x</identifier><identifier>PMID: 11168793</identifier><identifier>CODEN: JIDEAE</identifier><language>eng</language><publisher>Danvers, MA: Elsevier Inc</publisher><subject>Apoptosis - genetics ; Biological and medical sciences ; Blotting, Northern ; cell culture ; Cell Differentiation - genetics ; Cell Survival - genetics ; Cells, Cultured - drug effects ; Cells, Cultured - physiology ; cytokines ; Cytoskeletal Proteins - genetics ; Dermatology ; differentiation ; epidermis ; Epidermis - cytology ; Gene Expression - drug effects ; genetics ; Humans ; Investigative techniques, diagnostic techniques (general aspects) ; Keratinocytes - cytology ; Keratinocytes - drug effects ; Keratinocytes - metabolism ; Medical sciences ; Pathology. 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A total of 25,694 tags derived from expressed mRNA, were analyzed in a model for normal differentiation and in a model where cultured keratinocytes were stimulated for a prolonged period of time with tumor necrosis factor-α, thus mimicking aberrant differentiation in the context of cutaneous inflammation. Serial analysis of gene expression revealed many transcripts derived from unknown genes and a large number of genes that are not known to be expressed in keratinocytes; furthermore, these data provide quantitative information about the relative abundance of transcripts, allowing the identification of differentially expressed genes. A major part of the identified transcripts accounted for genes involved in energy metabolism and protein synthesis. A large proportion of all transcripts (6%) corresponded to genes associated with terminal differentiation and barrier formation. Another highly expressed functional group of genes (2% of all transcripts) corresponded to proteins involved in host protection such as antimicrobial proteins and proteinase inhibitors. Three of these genes were not known to be expressed in keratinocytes, and some were upregulated after prolonged tumor necrosis factor-α exposure. Our data on expressed genes in keratinocytes are consistent with the known function of human epidermis, and provide a first step to generate a transcriptome of human keratinocytes.</description><subject>Apoptosis - genetics</subject><subject>Biological and medical sciences</subject><subject>Blotting, Northern</subject><subject>cell culture</subject><subject>Cell Differentiation - genetics</subject><subject>Cell Survival - genetics</subject><subject>Cells, Cultured - drug effects</subject><subject>Cells, Cultured - physiology</subject><subject>cytokines</subject><subject>Cytoskeletal Proteins - genetics</subject><subject>Dermatology</subject><subject>differentiation</subject><subject>epidermis</subject><subject>Epidermis - cytology</subject><subject>Gene Expression - drug effects</subject><subject>genetics</subject><subject>Humans</subject><subject>Investigative techniques, diagnostic techniques (general aspects)</subject><subject>Keratinocytes - cytology</subject><subject>Keratinocytes - drug effects</subject><subject>Keratinocytes - metabolism</subject><subject>Medical sciences</subject><subject>Pathology. 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A total of 25,694 tags derived from expressed mRNA, were analyzed in a model for normal differentiation and in a model where cultured keratinocytes were stimulated for a prolonged period of time with tumor necrosis factor-α, thus mimicking aberrant differentiation in the context of cutaneous inflammation. Serial analysis of gene expression revealed many transcripts derived from unknown genes and a large number of genes that are not known to be expressed in keratinocytes; furthermore, these data provide quantitative information about the relative abundance of transcripts, allowing the identification of differentially expressed genes. A major part of the identified transcripts accounted for genes involved in energy metabolism and protein synthesis. A large proportion of all transcripts (6%) corresponded to genes associated with terminal differentiation and barrier formation. Another highly expressed functional group of genes (2% of all transcripts) corresponded to proteins involved in host protection such as antimicrobial proteins and proteinase inhibitors. Three of these genes were not known to be expressed in keratinocytes, and some were upregulated after prolonged tumor necrosis factor-α exposure. Our data on expressed genes in keratinocytes are consistent with the known function of human epidermis, and provide a first step to generate a transcriptome of human keratinocytes.</abstract><cop>Danvers, MA</cop><pub>Elsevier Inc</pub><pmid>11168793</pmid><doi>10.1046/j.1523-1747.2001.00218.x</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Apoptosis - genetics Biological and medical sciences Blotting, Northern cell culture Cell Differentiation - genetics Cell Survival - genetics Cells, Cultured - drug effects Cells, Cultured - physiology cytokines Cytoskeletal Proteins - genetics Dermatology differentiation epidermis Epidermis - cytology Gene Expression - drug effects genetics Humans Investigative techniques, diagnostic techniques (general aspects) Keratinocytes - cytology Keratinocytes - drug effects Keratinocytes - metabolism Medical sciences Pathology. Cytology. Biochemistry. Spectrometry. Miscellaneous investigative techniques RNA, Messenger - genetics Tumor Necrosis Factor-alpha - pharmacology |
title | Serial Analysis of Gene Expression in Differentiated Cultures of Human Epidermal Keratinocytes |
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