NPS31807, a Standardized Extract from Sphaeranthus indicus, Inhibits Inflammatory, Migratory and Proliferative Activity in Keratinocytes and Immune Cells


Chronic inflammation induced hyper-proliferation, and migration of keratinocytes are pathological hallmarks of psoriasis. Extracts from Sphaeranthus spp. demonstrate pharmacological activity in-vitro and in-vivo. However, the activity in modulating disease relevant pathways in psoriasis has not been reported. In the current study, a standardized herbal extract from Sphaeranthus indicus (NPS31807) was used to study the mechanistic activity under conditions of inflammation, keratinocyte proliferation and migration using cell based and gene expression assays. NPS31807 treatment reduced levels of pro-inflammatory cytokines from human macrophages and activated epidermal keratinocytes in a dose dependent manner. Treatment with NPS31807 diminished NFκB and AP-1 transcription activity in human macrophages. Lowered nuclear translocation of p65 sub-unit in macrophages by treatment confirmed reduced activity of NFκB. Gene expression profiling showed attenuated expression of genes involved with inflammation such as TNF signaling, and angiogenesis by NPS31807. Inhibition of angiogenesis and matrix metalloproteinase production in keratinocytes was confirmed using RTq-PCR assays. Pretreatment with NPS31807 led to significant reduction of STAT3 phosphorylation and mitogen induced cellular migration. NPS31807 induced inhibition of proliferative genes and BrdU uptake in epidermal keratinocytes. In summary, our study provides novel molecular insights into the anti-inflammatory, anti-migratory and anti-proliferative properties of NPS31807. In summary, NPS31807, an extract from Sphaeranthus indicus can be used as therapeutic option in inflammatory and auto-immune conditions such as psoriasis.

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D. Chakrabarti, A. Suthar, G. Jayaraman, B. Muthuvelan, S. Sharma and M. Padigaru, "NPS31807, a Standardized Extract from Sphaeranthus indicus, Inhibits Inflammatory, Migratory and Proliferative Activity in Keratinocytes and Immune Cells," Pharmacology & Pharmacy, Vol. 3 No. 2, 2012, pp. 178-194. doi: 10.4236/pp.2012.32025.

Conflicts of Interest

The authors declare no conflicts of interest.


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