Robert Malenka

Administrative Appointments

• Councilor, Society for Neuroscience (2006 - 2010)
• Scientific Advisory Board, Seaside Therapeutics (2007 - 2009)
• Scientific Advisory Board, Pfizer (2008 - 2009)

Honors and Awards

• Fellow, American Academy of Arts and Sciences (2005)
• Member, Institute of Medicine of the National Academies (2004)
• Associate, Neurosciences Research Program (1999-2006)
• Basic Neuroscience Research Award, Collegium Internationale Neuropsychopharmacologicum-Lilly (2002)
• International Prize in Neuroscience, Dargut and Milena Kemali Foundation (2000)

Postdoctoral Advisees

Mohiuddin Ahmad, Samarjit Bhattacharyya, Gabor Brasnjo, Amihai Citri, Marc Fuccillo, Brad Grueter, Sandra Jurado, Stephan Lammel, Gilberto Soler-Llavina

Research Interests

Long-lasting activity-dependent changes in the efficacy of synaptic transmission play an important role in the development of neural circuits and may mediate many forms of learning and memory. Work from my laboratory over the last 10 years has demonstrated that there are a variety of related but mechanistically distinct forms of synaptic plasticity. A major goal of my laboratory is to elucidate both the specific molecular events that are responsible for the triggering of these various forms of synaptic plasticity and the exact modifications in synaptic proteins that are responsible for the observed, long-lasting changes in synaptic efficacy. To accomplish this we use cellular electrophysiological recording techniques to examine synaptic plasticity in a variety of different in vitro preparations including thin slices of various regions of the rodent brain and primary neurons in culture. We also use cell biological and molecular techniques to examine the activity-dependent modulation of neurotransmitter receptors and to express dominant negative forms of various synaptic proteins so that their exact functions can be determined. An additional complementary approach has involved examining synaptic physiology and synaptic plasticity in various mutant mouse lines lacking specific synaptic proteins.

A related but independent area of research in my laboratory is the elucidation of the synaptic action of drugs of abuse such as the psychostimulants cocaine and amphetamine. Toward this end, we have developed in vitro slice preparations of the nucleus accumbens and ventral tegmental area, brain regions which are thought to mediate several of the behavioral effects of drugs of abuse. We have characterized a novel form of synaptic plasticity in the nucleus accumbens and have done an extensive pharmacological characterization of the synaptic effects of dopamine, cocaine, and amphetamine. Currently we are examining in more detail the underlying mechanisms of dopamine's actions...

Publications

• Endocannabinoid-mediated rescue of striatal LTD and motor deficits in Parkinson's disease models. Kreitzer AC, Malenka RC "Nature" 2007 ; 7128 (445) : 643-7
• Synaptic scaling mediated by glial TNF-alpha. Stellwagen D, Malenka RC "Nature" 2006 ; 7087 (440) : 1054-9
• Endocytosis and recycling of AMPA receptors lacking GluR2/3. Biou V, Bhattacharyya S, Malenka RC "Proc Natl Acad Sci U S A" 2008 ; 3 (105) : 1038-43
• Synaptic plasticity: multiple forms, functions, and mechanisms. Citri A, Malenka RC "Neuropsychopharmacology" 2008 ; 1 (33) : 18-41
• Long-term monitoring of transplanted human neural stem cells in developmental and pathological contexts with MRI. Guzman R, Uchida N, Bliss TM, He D, Christopherson KK, Stellwagen D, Capela A, Greve J, Malenka RC, Moseley ME, Palmer TD, Steinberg GK "Proc Natl Acad Sci U S A" 2007 ; 24 (104) : 10211-6