PMID- 11721447 OWN - NLM STAT- MEDLINE DCOM- 20020124 LR - 20101118 IS - 0366-6999 (Print) IS - 0366-6999 (Linking) VI - 112 IP - 12 DP - 1999 Dec TI - Up-regulation of phosphatidylinositol 3-kinase in psoriatic lesions. PG - 1097-100 AB - OBJECTIVE: To explore the relationship between phosphatidylinositol 3-kinase (PI 3-kinase) and psoriasis. METHODS: We constructed eukaryotic expression vector PcDNA 3-PI 3-kinase, by which digoxin-labeled RNA probe of PI 3-kinase was generated. After that, we detected the expressions of PI 3-kinase in the skins of twelve patients with plaque psoriasis and five normal subjects by dot blot, in situ hybridization and immunohistochemistry. RESULTS: The expression of PI 3-kinase mRNA and protein in psoriatic lesions increased obviously compared with that in normal skin. The expression of the PI 3-kinase gene conformed to the expression of its protein in psoriatic and normal human skins. CONCLUSIONS: Over-expression of PI 3-kinase may be related to the hyperproliferation of psoriatic keratinocytes. Transfection of the anti-sense gene of PI 3-kinase into psoriatic keratinocytes might be a best way to elucidate the issue. FAU - Zhang, X AU - Zhang X AD - Department of Biology, Beijing Normal University, Beijing 100875, China. FAU - Liu, H AU - Liu H FAU - Ma, S AU - Ma S LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Chin Med J (Engl) JT - Chinese medical journal JID - 7513795 RN - 0 (RNA, Messenger) RN - EC 2.7.1.- (Phosphatidylinositol 3-Kinases) SB - IM MH - Adolescent MH - Adult MH - Child MH - Child, Preschool MH - Female MH - Gene Expression MH - Humans MH - Infant MH - Keratinocytes/pathology MH - Male MH - Middle Aged MH - Phosphatidylinositol 3-Kinases/*biosynthesis/genetics MH - Psoriasis/*enzymology/genetics MH - RNA, Messenger/biosynthesis/genetics MH - Skin/*enzymology/pathology MH - Up-Regulation EDAT- 2001/11/28 10:00 MHDA- 2002/01/25 10:01 CRDT- 2001/11/28 10:00 PHST- 2001/11/28 10:00 [pubmed] PHST- 2002/01/25 10:01 [medline] PHST- 2001/11/28 10:00 [entrez] PST - ppublish SO - Chin Med J (Engl). 1999 Dec;112(12):1097-100.