Design of Barbiturate–Nitrate Hybrids that Inhibit MMP-9 Activity and Secretion
摘要:
We describe a new type of barbiturate-based matrix metalloproteinase (MMP) inhibitor incorporating a nitric oxide (NO) donor/mimetic group (series 1). The compounds were designed to inhibit MMP at enzyme level and to attenuate MMP-9 secretion arising from inflammatory signaling. To detect effects related to the nitrate, we prepared and studied an analogous series of barbiturate C5-alkyl alcohols that were unable to release NO (series 2). Both series inhibited recombinant human MMP-2/9 activity with nanomolar potency. Series 1 consistently inhibited the secretion of MMP-9 from TNF alpha/IL1 beta stimulated Caco-2 cells at 10 mu M, which could be attributed to NO related effects because the non-nitrate panel did not affect enzyme levels. Several compounds from series 1 (10 mu M) inhibited tumor cell invasion but none from the non-nitrate panel did. The work shows that MMP-inhibitory barbiturates are suitable scaffolds for hybrid design, targeting additional facets of MMP pathophysiology, with potential to improve risk-benefit ratios.
A combination of: a first tetracycline (TC) component; and a second component capable of releasing nitric oxide (NO) or a nitrate capable of mimicking NO effects in vivo (NO mimetic). The combinations of the invention advantageously act as more effective MMP modulators with selective reductions in circulating MMP-9 levels in-vivo and inhibitory effects on MMP-2 and MMP-9 levels in-vitro. The combinations of the invention also advantageously act as modulators of inflammation mediators. The co-existence of abnormalities of MMP enzymes and inflammation in many diseases make these characteristics advantageous. Therefore, the various combinations of the invention find utility in medical applications where MMPs and/or inflammation is implicated.
Nitrosated glutamic acid compounds, compositions and methods of use
申请人:Garvey S. David
公开号:US20070037821A1
公开(公告)日:2007-02-15
The invention describes novel nitrosated glutamic acid compounds and pharmaceutically acceptable salts thereof, and novel compositions comprising at least one nitrosated glutamic acid compound, and, optionally, at least one nitric oxide donor and/or at least one therapeutic agent. The invention also provides novel kits comprising at least one nitrosated glutamic acid compound, and, and, optionally, at least one nitric oxide donor compound and/or at least one therapeutic agent. The invention also provides methods for (a) treating cardiovascular diseases; (b) treating renovascular diseases; (c) treating diabetes; (d) treating diseases resulting from oxidative stress; (e) treating endothelial dysfunctions; (f) treating diseases caused by endothelial dysfunctions; (g) treating cirrhosis; (h) treating pre-eclampsia; (j) treating osteoporosis; (k) treating nephropathy; (l) treating diseases resulting from elevated levels of gamma-glutamyl transpeptidase and (m) the targeted delivery of compounds and nitric oxide to organs, cells or tissues containing the enzyme gamma-glutamyl transpeptidase.