David R. Soll
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David R. Soll (born April 29, 1942) is a Professor of Biology at the University of Iowa. He is best known for the motion analysis of living cells, the discovery of ''
Candida albicans ''Candida albicans'' is an opportunistic pathogenic yeast that is a common member of the human gut flora. It can also survive outside the human body. It is detected in the gastrointestinal tract and mouth in 40–60% of healthy adults. It is usu ...
''
phenotypic switching Phenotypic switching is switching between multiple cellular morphologies. David R. Soll described two such systems: the first high frequency switching system between several morphological stages and a second high frequency switching system between ...
and
monoclonal antibody A monoclonal antibody (mAb, more rarely called moAb) is an antibody produced from a cell Lineage made by cloning a unique white blood cell. All subsequent antibodies derived this way trace back to a unique parent cell. Monoclonal antibodies ...
technology. He directed the Developmental Studies Hybridoma Bank from 1995-2021, and the WM Keck Dynamic Image Analysis Facility from 1985-2021. He is a Fellow of both the American Academy of Microbiology and the American Association for the Advancement of Science since 2006. He has published over 400 articles in various fields of biomedicine, and has received more than 78 grants and contracts, founded four companies, and is active on several editorial boards for major scientific publications.


Background

Soll was born in South
Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...
,
Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...
and graduated from Central High School for Boys in 1959 with a BA and has been inducted into the Central High School Hall of Fame (2018). He attended the
University of Wisconsin A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, t ...
from 1960 to 1969, receiving a BA, MS and PhD. He served as a post-doctoral fellow and taught Introductory Biology at
Brandeis University , mottoeng = "Truth even unto its innermost parts" , established = , type = Private research university , accreditation = NECHE , president = Ronald D. Liebowitz , ...
. In 1972 he joined the Department of Biology at the
University of Iowa The University of Iowa (UI, U of I, UIowa, or simply Iowa) is a public research university in Iowa City, Iowa, United States. Founded in 1847, it is the oldest and largest university in the state. The University of Iowa is organized into 12 col ...
as an Assistant Professor. In 1976 he became an Associate Professor and in 1982 a Full Professor. In 1989 he was awarded the Roy J. and Lucille Carver/Emil Witschi Professorship of the Biological Sciences, and in 1989 also became a Full Professor of Dentistry. In 2005, he was elected a Fellow of the
American Association for the Advancement of Science The American Association for the Advancement of Science (AAAS) is an American international non-profit organization with the stated goals of promoting cooperation among scientists, defending scientific freedom, encouraging scientific respons ...
(AAAS) and in 2006 a Fellow of the
American Academy of Microbiology The American Society for Microbiology (ASM), originally the Society of American Bacteriologists, is a professional organization for scientists who study viruses, bacteria, fungi, algae, and protozoa as well as other aspects of microbiology. It wa ...
. In 2009 he was awarded the Lucille K. George Medal from the International Society for Human and Animal Mycology, and in 2013 he was awarded the Rhoda Benham Medal from the Medical Mycological Society of the Americas. David Soll was married for 30 years to Michele Morice (1953-2010) and is currently married to Dr. Melinda A. Weinstein, a literary and art historian. He has three children, Jacob Soll, Samantha Soll and Benjamin Soll.


Career

From 1965 to 1970, he worked on the germination of ''Blastoclandiella emersonii'' under the mentorship of David Sonneborn and discovered that complex differentiations can be preprogrammed and occur without RNA or protein synthesis. From 1972 to 1978, he and colleagues worked on the "accumulation and erasure of morphogenetics information" in ''Dictyostelium discoideum''. In 1979, he formulated the first model and conditional methods to analyze timer pathways in developing systems. From 1977 to 1984, he developed pH-regulated dimorphism and applied it to study the regulation of the bud-hypha transition in ''
Candida albicans ''Candida albicans'' is an opportunistic pathogenic yeast that is a common member of the human gut flora. It can also survive outside the human body. It is detected in the gastrointestinal tract and mouth in 40–60% of healthy adults. It is usu ...
'' In 1985 to 1987, he and colleagues discovered the first high frequency switching system in the pathogenic yeast ''
Candida albicans ''Candida albicans'' is an opportunistic pathogenic yeast that is a common member of the human gut flora. It can also survive outside the human body. It is detected in the gastrointestinal tract and mouth in 40–60% of healthy adults. It is usu ...
''. Next to this phenotypic, morphological switching system he and his co-workers also discovered the epigenetic, phenotypic
white-to-opaque switching ''Candida albicans'' is an opportunistic pathogenic yeast that is a common member of the human gut flora. It can also survive outside the human body. It is detected in the gastrointestinal tract and mouth in 40–60% of healthy adults. It is us ...
system. In 1989, he and Dr. E Voss finished and licensed the Dynamic Motion Analyses System (DMS), to Motion Analyses Corporation of Santa Rosa, CA. In 1997, Soll and Voss obtained the patent for DIAS, the next generation of DMS. In 1992 Soll founded the company Solltech, Inc., a computer software and hardware development company to develop and distribute DIAS. From 1987 to 1995, he and co-workers developed the first DNA fingerprinting probes for studying the population structure of infectious fungi, and in 1995 received a patent for the software DENDRON, which analyzed DNA fingerprints. In 1995, Soll formed the company Caviforce Technologies to develop a method of using ultrasound for seed germination. From 1995 to 2004, he and colleagues developed the first 3D Dynamic Image Analysis System (3D-DIAS) for cells and embryos, describing how embryos form and amoeboid cells crawl. Ultrasound Solutions Inc., was formed in 1999 to develop the technology to use ultrasound in waste management. In 2003 Soll founded the company Solltechnologies Inc., to sell DIAS and Dendron software. From 2005 to present, he and colleagues discovered that ''
Candida albicans ''Candida albicans'' is an opportunistic pathogenic yeast that is a common member of the human gut flora. It can also survive outside the human body. It is detected in the gastrointestinal tract and mouth in 40–60% of healthy adults. It is usu ...
'' forms a "pathogenic" biofilm and a "sexual" biofilm, depending on the configuration of the mating type locus and identified the alternative pathways regulating each biofilm. From 2011 to present, he and colleagues developed a 4D model for reconstructing and motion analyzing cancer cells and tumorigenesis.


Current Work

Soll continues to publish on 1) the role of mating and switching in the pathogenesis of
Candida albicans ''Candida albicans'' is an opportunistic pathogenic yeast that is a common member of the human gut flora. It can also survive outside the human body. It is detected in the gastrointestinal tract and mouth in 40–60% of healthy adults. It is usu ...
, 2) cell motility and the
cytoskeleton The cytoskeleton is a complex, dynamic network of interlinking protein filaments present in the cytoplasm of all cells, including those of bacteria and archaea. In eukaryotes, it extends from the cell nucleus to the cell membrane and is compos ...
, 3) advanced monoclonal
antibody An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shaped protein used by the immune system to identify and neutralize foreign objects such as pathogenic bacteria and viruses. The antibody recognizes a unique molecule of the ...
technology and 4) methods for suppressing tumorigenesis in cancer patients using monoclonal antibodies. He is currently adapting the software programs DIAS and DENDRON to study digitized fine art paintings.


References

{{DEFAULTSORT:Soll, David R. 1942 births Living people Educators from Philadelphia Central High School (Philadelphia) alumni University of Wisconsin–Madison alumni University of Iowa faculty 21st-century American biologists Fellows of the American Academy of Microbiology