Pheophytin a and Chlorophyll a Identified from Environmentally Friendly Cultivation of Green Pepper Enhance Interleukin-2 and Interferon-γ in Peyer's Patches ex Vivo
- Pheophytin a and Chlorophyll a Identified from Environmentally Friendly Cultivation of Green Pepper Enhance Interleukin-2 and Interferon-γ in Peyer's Patches ex Vivo
- 표명윤; 박보경; 최정준; 양미희; 양현옥; 차진욱; 김진철; 김인선; 이향범; 진미림
- pheophytin a; chlorophyll a; environmentally friendly cultivated green pepper; Peyer's patch; interleukin-2; interferon-γ
- Issue Date
- Biological & pharmaceutical bulletin
- VOL 36, NO 11, 1747-1753
- The oral consumption of capsicum has been reported to increase interleukin (IL)-2 and interferon (IFN)-γ production in Peyer’s patches (PP); however, the active components responsible for these effects have not been completely identified. The beneficial biological effects of green peppers cultivated under environmentally friendly farming conditions (ECP), without the use of chemical pesticides, have rarely been compared with those of green peppers cultivated under conventional farming conditions (CCP). Oral administration of ECP extract significantly induced the production of IL-2 and IFN-γ in concanavalin A-treated cells from PP ex vivo; their levels were much higher than those in the CCP extract-treated group. A comparative analysis of the HPLC profiles indicated a 1.7-fold increase of a peak, named EF-1, at 415 nm in the ECP extract. The major component of EF-1 was identified as pheophytin a, which is a chlorophyll a molecule lacking a central Mg2+ ion, as determined from NMR data. Intake of pheophytin a and chlorophyll a significantly increased IL-2 and IFN-γ production, and the percentage of IL-2- and IFN-γ-producing CD4+ T-cells in PP. Taken together, our data suggest that ECPs produce a higher content of pheophytin a than CCPs, and pheophytin a and chlorophyll a are immune-modulating components in green vegetables.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.