Susan Lindquist

Susan Lindquist
Name	Susan Lindquist
Birth date	1949-06-05
Birth place	Chicago, Illinois
Death date	2016-10-27
Death place	Boston, Massachusetts
Nationality	American
Fields	Molecular biology, Genetics, Biochemistry
Workplaces	Massachusetts Institute of Technology, Whitehead Institute, University of Chicago
Alma mater	University of Illinois Urbana–Champaign, University of Chicago
Doctoral advisor	Ellis K. Koslow
Known for	Protein folding, Heat-shock response, Prion biology

Susan Lindquist

Susan Lindquist was an American molecular biologist and geneticist known for pioneering work on protein folding, heat-shock proteins, and yeast prions. Her research bridged molecular chaperones, cellular stress responses, and evolutionary biology, influencing studies in Alzheimer's disease, Parkinson's disease, and Huntington's disease. She served in leadership roles at institutions including the Whitehead Institute and the Massachusetts Institute of Technology and received numerous awards such as the National Medal of Science and the Lasker Award.

Early life and education

Lindquist was born in Chicago, Illinois and grew up in a family rooted in the Midwest, later attending the University of Illinois Urbana–Champaign for undergraduate studies. She pursued graduate training at the University of Chicago, where she completed doctoral work under Ellis K. Koslow, focusing on molecular mechanisms that presaged her later investigations into protein homeostasis. Postdoctoral research followed at the University of Chicago and other research centers, connecting her to scientists at the Whitehead Institute and the Massachusetts Institute of Technology network early in her career.

Research and scientific contributions

Lindquist's laboratory used Saccharomyces cerevisiae as a model organism to dissect the biology of molecular chaperones, including the Hsp90 family and heat-shock proteins such as Hsp70 and Hsp104. Her work demonstrated how chaperone networks influence protein folding landscapes, revealing links to conformational diseases like Alzheimer's disease, Parkinson's disease, and Huntington's disease. She provided seminal evidence that protein conformational states can act as epigenetic elements, characterizing yeast prions such as [PSI+], and showing how prion-like factors alter phenotypes and facilitate rapid heritable change under stress.

Her studies on Hsp90 uncovered its role as a capacitor for morphological evolution, connecting molecular chaperones to developmental regulators including Hox genes and signaling pathways like the Ras and Wingless networks in model systems. By integrating genetic screens, biochemical assays, and evolutionary theory, Lindquist linked molecular chaperone activity to the expression of cryptic genetic variation, with implications for adaptive evolution observed in organisms studied by researchers affiliated with the National Academy of Sciences community.

Lindquist's lab developed yeast-based platforms to model human neurodegenerative proteins, enabling high-throughput screens that connected basic mechanisms to translational efforts pursued by groups at institutions such as Harvard University, the University of California, San Francisco, and pharmaceutical collaborators. Her interdisciplinary approach fostered collaborations with structural biologists at the Howard Hughes Medical Institute and geneticists at the Broad Institute, influencing therapeutic strategies targeting proteostasis networks, including small-molecule modulators explored in partnerships with the National Institutes of Health and biotech firms.

Awards and honors

Lindquist received numerous prestigious recognitions, including election to the National Academy of Sciences and the American Academy of Arts and Sciences. She was awarded the National Medal of Science for her contributions to understanding protein folding and cellular stress responses, and honored with the Lasker Award for basic medical research. Additional accolades included memberships in the Royal Society (honorary affiliations and international collaborations), the Institute of Medicine (now the National Academy of Medicine), and prizes from organizations such as the Gairdner Foundation and the Wolf Prize community. She held fellowships and honorary degrees from leading universities including Yale University, Princeton University, and the University of Cambridge.

Academic and leadership roles

Lindquist held faculty positions at the University of Chicago before joining the Whitehead Institute and the Massachusetts Institute of Technology as a professor and leader in molecular biology. She served as director of the Whitehead Institute and later as the Institute Professor at MIT, mentoring trainees who went on to positions at institutions like the Stanford University School of Medicine, Columbia University, and the University of California, Berkeley. She participated in advisory roles for organizations including the Howard Hughes Medical Institute, the National Institutes of Health, and the Wellcome Trust, and contributed to policy dialogues with entities such as the National Science Foundation and the Office of Science and Technology Policy.

Her leadership extended to entrepreneurship and technology transfer, co-founding or advising biotech startups focused on proteostasis and neurodegeneration interlinked with incubators affiliated with the Kendall Square ecosystem and collaborations with industry partners across the Cambridge, Massachusetts research cluster.

Personal life and legacy

Lindquist balanced a rigorous scientific career with personal interests and mentorship that shaped generations of scientists across institutions like the Whitehead Institute and MIT. Her advocacy for basic research influenced funding priorities at the National Institutes of Health and inspired programs at universities such as Harvard Medical School and MIT. Following her death in Boston, Massachusetts, her scientific legacy persisted in continuing studies of protein folding, prion biology, and proteostasis at research centers including the Broad Institute, Cold Spring Harbor Laboratory, and international laboratories in the United Kingdom and Japan. Her influence is evident in contemporary work on neurodegeneration at centers like the Alzheimer's Association-affiliated research networks and in the training of scientists now at the European Molecular Biology Laboratory and other leading institutions.

Category:American molecular biologists Category:Women biologists Category:Members of the United States National Academy of Sciences