Insights from selective non-phosphinic inhibitors of MMP-12 tailored to fit with an S1' loop canonical conformation.
After the disappointment of clinical trials with early broad spectrum synthetic inhibitors of matrix metalloproteinases (MMPs), the field is now resurging with a new focus on the development of selective inhibitors that fully discriminate between different members of the MMP family with several therapeutic applications in perspective. Here, we report a novel class of highly selective MMP-12 inhibitors, without a phosphinic zinc-binding group, designed to plunge deeper into the S(1)' cavity of the enzyme. The best inhibitor from this series, identified through a systematic chemical exploration, displays nanomolar potency toward MMP-12 and selectivity factors that range between 2 and 4 orders of magnitude toward a large set of MMPs. Comparison of the high resolution x-ray structures of MMP-12 in free state or bound to this new MMP-12 selective inhibitor reveals that this compound fits deeply within the S(1)' specificity cavity, maximizing surface/volume ratios, without perturbing the S(1)' loop conformation. This is in contrast with highly selective MMP-13 inhibitors that were shown to select a particular S(1)' loop conformation. The search for such compounds that fit precisely to preponderant S(1)' loop conformation of a particular MMP may prove to be an alternative effective strategy for developing selective inhibitors of MMPs.
Devel
Laurent
L
Commissariat à l'Energie Atomique, Service d'Ingénierie Moléculaire de Protéines, CE-Saclay, 91191 Gif/Yvette Cedex, France.
Garcia
Sandra
S
Czarny
Bertrand
B
Beau
Fabrice
F
LaJeunesse
Evelyne
E
Vera
Laura
L
Georgiadis
Dimitris
D
Stura
Enrico
E
Dive
Vincent
V
D001665:Binding Sites; D018360:Crystallography, X-Ray; D015195:Drug Design; D057075:Enzyme Assays; D006801:Humans; D007700:Kinetics; D053508:Matrix Metalloproteinase 12 / Q000737:chemistry* / Q000378:metabolism; D061965:Matrix Metalloproteinase Inhibitors; D008958:Models, Molecular; D015394:Molecular Structure; D010721:Phosphinic Acids / Q000737:chemistry; D011480:Protease Inhibitors / Q000737:chemistry* / Q000494:pharmacology; D011487:Protein Conformation; D017434:Protein Structure, Tertiary; D013329:Structure-Activity Relationship; D013379:Substrate Specificity
D061965:Matrix Metalloproteinase Inhibitors; D010721:Phosphinic Acids; D011480:Protease Inhibitors; D053508:Matrix Metalloproteinase 12
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