Volume 50, Issue 11 pp. 3504-3515
Research Article

Antiarthritic effect of bee venom: Inhibition of inflammation mediator generation by suppression of NF-κB through interaction with the p50 subunit

Hye Ji Park

Hye Ji Park

Chungbuk National University, Chungbuk, South Korea

Search for more papers by this author
Seong Ho Lee

Seong Ho Lee

Chungbuk National University, Chungbuk, South Korea

Search for more papers by this author
Dong Ju Son

Dong Ju Son

Chungbuk National University, Chungbuk, South Korea

Search for more papers by this author
Ki Wan Oh

Ki Wan Oh

Chungbuk National University, Chungbuk, South Korea

Search for more papers by this author
Ki Hyun Kim

Ki Hyun Kim

Kyungwon University, Gyeonggii, South Korea

Search for more papers by this author
Ho Sueb Song

Ho Sueb Song

Kyungwon University, Gyeonggii, South Korea

Search for more papers by this author
Goon Joung Kim

Goon Joung Kim

Kyungwon University, Gyeonggii, South Korea

Search for more papers by this author
Goo Taeg Oh

Goo Taeg Oh

Ewha Women's University, Seoul, South Korea

Search for more papers by this author
Do Young Yoon

Do Young Yoon

Korea Research Institute of Bioscience and Biotechnology, Taejon, South Korea

Search for more papers by this author
Jin Tae Hong

Corresponding Author

Jin Tae Hong

Chungbuk National University, Chungbuk, South Korea

College of Pharmacy, Chungbuk National University, 48, Gaesin-dong, Heungduk-gu, Cheongju, Chungbuk 361-763, South KoreaSearch for more papers by this author
First published: 04 November 2004
Citations: 210

Abstract

Objective

To investigate the molecular mechanisms of the antiarthritic effects of bee venom (BV) and melittin (a major component of BV) in a murine macrophage cell line (Raw 264.7) and in synoviocytes obtained from patients with rheumatoid arthritis.

Methods

We evaluated the antiarthritic effects of BV in a rat model of carrageenan-induced acute edema in the paw and in a rat model of chronic adjuvant-induced arthritis. The inhibitory effects of BV and melittin on inflammatory gene expression were measured by Western blotting, and the generation of prostaglandin E2 (PGE2) and nitric oxide (NO) and the intracellular calcium level were assayed. NF-κB DNA binding and transcriptional activity were determined by gel mobility shift assay or by luciferase assay. Direct binding of BV and melittin to the p50 subunit of NF-κB was determined with a surface plasmon resonance analyzer.

Results

BV (0.8 and 1.6 μg/kg) reduced the effects of carrageenan- and adjuvant-induced arthritis. This reducing effect was consistent with the inhibitory effects of BV (0.5, 1, and 5 μg/ml) and melittin (5 and 10 μg/ml) on lipopolysaccharide (LPS; 1 μg/ml)–induced expression of cyclooxygenase 2, cytosolic phospholipase A2, inducible NO synthase, generation of PGE2 and NO, and the intracellular calcium level. BV and melittin prevented LPS-induced transcriptional and DNA binding activity of NF-κB via the inhibition of IκB release and p50 translocation. BV (affinity [Kd] = 4.6 × 10−6M) and melittin (Kd = 1.2 × 10−8M) bound directly to p50.

Conclusion

Target inactivation of NF-κB by directly binding to the p50 subunit is an important mechanism of the antiarthritic effects of BV.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.

click me