Towards understanding molecular mechanism of drug resistance: L76V � Daniel.Hoffmann@uni-due.de 2007 c 1
HIV PR complexed with drug (LPV) � Daniel.Hoffmann@uni-due.de 2007 c 2
Molecular location of L76V � Daniel.Hoffmann@uni-due.de 2007 c 3
Molecular location of L76V � Daniel.Hoffmann@uni-due.de 2007 c 4
Molecular location of L76V � Daniel.Hoffmann@uni-due.de 2007 c 5
Possible effects of L76V No direct interaction of L76V with drugs ⇒ � Daniel.Hoffmann@uni-due.de 2007 c 6
Possible effects of L76V No direct interaction of L76V with drugs ⇒ possible effects somehow “long range”: � Daniel.Hoffmann@uni-due.de 2007 c 6
Possible effects of L76V No direct interaction of L76V with drugs ⇒ possible effects somehow “long range”: ◮ electrostatics � Daniel.Hoffmann@uni-due.de 2007 c 6
Possible effects of L76V No direct interaction of L76V with drugs ⇒ possible effects somehow “long range”: ◮ electrostatics ◮ conformational rearrangements ⇒ � Daniel.Hoffmann@uni-due.de 2007 c 6
Possible effects of L76V No direct interaction of L76V with drugs ⇒ possible effects somehow “long range”: ◮ electrostatics ◮ conformational rearrangements ⇒ indirect effects � Daniel.Hoffmann@uni-due.de 2007 c 6
L76V–drug interactions: LPV "WT" � Daniel.Hoffmann@uni-due.de 2007 c 7
L76V–drug interactions: LPV (II) diff. L76V − "WT" � Daniel.Hoffmann@uni-due.de 2007 c 8
L76V–drug interactions: APV "WT" � Daniel.Hoffmann@uni-due.de 2007 c 9
L76V–drug interactions: APV (II) L76V � Daniel.Hoffmann@uni-due.de 2007 c 10
L76V–drug interactions: SQV "WT" � Daniel.Hoffmann@uni-due.de 2007 c 11
L76V–drug interactions: SQV (II) diff. L76V− "WT" � Daniel.Hoffmann@uni-due.de 2007 c 12
Model based estimates of resistance Estimate of ∆∆ G ( WT · drug → L 76 V · drug ) based on molecular model: � Daniel.Hoffmann@uni-due.de 2007 c 13
Model based estimates of resistance Estimate of ∆∆ G ( WT · drug → L 76 V · drug ) based on molecular model: estimate of ∆∆ G drug phenotype APV 14.5 resistant LPV 7.8 resistant SQV 9.0 susceptible � Daniel.Hoffmann@uni-due.de 2007 c 13
Reasons for discrepancy � Daniel.Hoffmann@uni-due.de 2007 c 14
Reasons for discrepancy: global rearrangements 35 WT binding pocket 30 25 All % RF>10 20 15 10 5 0 APV LPV SQV � Daniel.Hoffmann@uni-due.de 2007 c 15
Next steps ◮ More complex model, � Daniel.Hoffmann@uni-due.de 2007 c 16
Next steps ◮ More complex model, that is also more compute intensitive � Daniel.Hoffmann@uni-due.de 2007 c 16
Next steps ◮ More complex model, that is also more compute intensitive ◮ Test with comprehensive dataset � Daniel.Hoffmann@uni-due.de 2007 c 16
Next steps ◮ More complex model, that is also more compute intensitive ◮ Test with comprehensive dataset ◮ Use as predictive tool � Daniel.Hoffmann@uni-due.de 2007 c 16
Acknowledgments The whole AREVIR team: ◮ Patrick Braun, Martin Däumer, Rolf Kaiser, Klaus Korn, Hauke Walter, ... � Daniel.Hoffmann@uni-due.de 2007 c 17
Acknowledgments The whole AREVIR team: ◮ Patrick Braun, Martin Däumer, Rolf Kaiser, Klaus Korn, Hauke Walter, ... and: ◮ Yvonne Schuh ◮ Karen Willbrand � Daniel.Hoffmann@uni-due.de 2007 c 17
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