title: [Comparative study on the regulatory effects on senescence related cell cycle gene expression by TCM principles of tonifying shen, invigorating pi benefiting qi, and activating blood circulation].
abstract: OBJECTIVE
  To compare the effects of TCM therapeutic principles of tonifying Shen (TS), benefiting Qi (BQ), invigorating Pi (IP) and activating blood circulation (ABC) herbs in regulating the gene expression in senescence related cell cycle.
  
  
  METHODS
  Drug sera containing TCM herbs of the above-mentioned principles were used to treat the aged human diploid fibroblast cell line 2BS. The effect of TCM on the senescence related cell cycle and its related gene expression (P16INK4, Cyclin D1 and PCNA) were examined by means of cell proliferative doublings, flow cytometry, RT-PCR and Western blot analysis.
  
  
  RESULTS
  TCM herbs of TS and BQ could improve the cell cycle, down-regulate the P16 and Cyclin D1 mRNA/protein expression, up-regulate PCNA mRNA/protein expression, while TCM herbs of IP and ABC showed insignificant effect on these indexes.
  
  
  CONCLUSIONS
  TCM herbs of TS and BQ have effect in improving cell cycle, it may be achieved through promoting the P16 pathway of gene expression.
authors.affiliation: Institute of Geriatrics, Shanghai University of TCM, Shanghai 200032. fangmin-chen@hotmail.com
authors.forename: Fang-min
authors.initials: FM
authors.lastname: Chen
authors.forename: Wei-kang
authors.initials: WK
authors.lastname: Zhao
authors.forename: Pin-chu
authors.initials: PC
authors.lastname: Xu
mesh_terms: D000375:Aging / Q000235:genetics*; D000818:Animals; D002453:Cell Cycle / Q000187:drug effects; D002478:Cells, Cultured; D016922:Cellular Senescence / Q000235:genetics; D019938:Cyclin D1 / Q000096:biosynthesis / Q000235:genetics*; D019941:Cyclin-Dependent Kinase Inhibitor p16 / Q000096:biosynthesis / Q000235:genetics*; D015536:Down-Regulation; D004365:Drugs, Chinese Herbal / Q000494:pharmacology*; D005347:Fibroblasts / Q000166:cytology; D005786:Gene Expression Regulation; D008168:Lung / Q000166:cytology; D008297:Male; D008516:Medicine, Chinese Traditional; D018809:Proliferating Cell Nuclear Antigen / Q000096:biosynthesis / Q000235:genetics; D012333:RNA, Messenger / Q000096:biosynthesis / Q000235:genetics; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D019941:Cyclin-Dependent Kinase Inhibitor p16; D004365:Drugs, Chinese Herbal; D018809:Proliferating Cell Nuclear Antigen; D012333:RNA, Messenger; D019938:Cyclin D1