Pyrano-isochromanones as IL-6 inhibitors: synthesis, in vitro and in vivo antiarthritic activity.
J Med Chem
; 57(16): 7085-97, 2014 Aug 28.
Article
in En
| MEDLINE
| ID: mdl-25111439
ABSTRACT
Bergenin (1), a unique fused C-glycoside isolated from Bergenia species, possesses interesting anti-inflammatory and antipain activities. To study SAR of this scaffold, first-generation derivatives were synthesized and evaluated for inhibition of lymphocyte proliferation and production of pro-inflammatory cytokines. The C-7 substituted derivatives showed inhibition of IL-6 as well as TNF-α production. Bergenin and its most potent IL-6 inhibitor derivatives 4e and 4f were then investigated in a panel of in vitro and in vivo inflammation/arthritis models. These compounds significantly decreased the expression of NF-kB and IKK-ß in THP-1 cells. In in vivo study in BALB/c mice, a dose-dependent inhibition of SRBC-induced cytokines, reduction in humoral/cell-mediated immunity, and antibody titer was observed. The CIA study in DBA/1J mice indicated that compounds led to reduction in swelling of paws, cytokine levels, and anticollagen IgG1/IgG2a levels. The significant in vivo immunosuppressive efficacy of pyrano-isochromanones demonstrates the promise of this scaffold for development of next-generation antiarthritic drugs.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Arthritis, Experimental
/
Anti-Inflammatory Agents, Non-Steroidal
/
Interleukin-6
Type of study:
Prognostic_studies
Limits:
Animals
/
Female
/
Humans
Language:
En
Journal:
J Med Chem
Journal subject:
QUIMICA
Year:
2014
Document type:
Article
Affiliation country:
India