Susan Ackerman (neuroscientist)
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Susan L. Ackerman is an American neuroscientist and geneticist. Her work has highlighted some of the genetic and
biochemical Biochemistry or biological chemistry is the study of chemical processes within and relating to living organisms. A sub-discipline of both chemistry and biology, biochemistry may be divided into three fields: structural biology, enzymology an ...
factors that are involved in the development of the central nervous system and age-related
neurodegeneration A neurodegenerative disease is caused by the progressive loss of structure or function of neurons, in the process known as neurodegeneration. Such neuronal damage may ultimately involve cell death. Neurodegenerative diseases include amyotrophic ...
. Her research is aimed at helping scientists understand what causes several types of neurodegeneration in
mammal Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or ...
s. This research, and others' like it, may lead to cures for
neurodegenerative diseases A neurodegenerative disease is caused by the progressive loss of structure or function of neurons, in the process known as neurodegeneration. Such neuronal damage may ultimately involve cell death. Neurodegenerative diseases include amyotrophic ...
. Ackerman is a professor at University of California San Diego. She was formerly a professor at the
Jackson Laboratory The Jackson Laboratory (often abbreviated as JAX) is an independent, non-profit biomedical research institution which was founded by a eugenicist. It employs more than 3,000 employees in Bar Harbor, Maine; Sacramento, California; Farmington, Con ...
and the
Sackler School of Graduate Biomedical Sciences The Graduate School of Biomedical Sciences is one of the eight schools that comprise Tufts University. The Graduate School of Biomedical Sciences (GSBS) is located on the university's health sciences campus in the Chinatown district of Boston, ...
at Tufts University. She also serves as an adjunct professor at the University of Maine, Orono. Ackerman was an associate geneticist at
Massachusetts General Hospital Massachusetts General Hospital (Mass General or MGH) is the original and largest teaching hospital of Harvard Medical School located in the West End neighborhood of Boston, Massachusetts. It is the third oldest general hospital in the United Stat ...
in Boston, Massachusetts.


Education

As an undergraduate, Ackerman attended California State University (Chico), graduating with a Bachelor of Arts degree in Chemistry, and a Bachelor of Arts degree in Biology. Subsequently, Ackerman pursued graduate studies, earning a Doctorate in Biology at the UCLA.


Career and research

Since 2005, Ackerman has served as an investigator at the
Howard Hughes Medical Institute The Howard Hughes Medical Institute (HHMI) is an American non-profit medical research organization based in Chevy Chase, Maryland. It was founded in 1953 by Howard Hughes, an American business magnate, investor, record-setting pilot, engineer, fil ...
. Her work there has centered on the mice that are available through the
Jackson Laboratory The Jackson Laboratory (often abbreviated as JAX) is an independent, non-profit biomedical research institution which was founded by a eugenicist. It employs more than 3,000 employees in Bar Harbor, Maine; Sacramento, California; Farmington, Con ...
, known as the Jax mice. These mice have a wide array of genotypic mutations, which lead to different phenotypic expression. Ackerman observes these mice and investigates the genotypic variations that lead to defects in mice. She then investigates the product of these genes and how they affect neurological development and preservation. She was elected a member of the
National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the Nati ...
and the American Academy of Arts and Sciences in April 2019.


Unc5c

Ackerman's research has centered largely on the '' Unc5c'' gene. The gene product of Unc5c is the Unc5c protein, a neurological netrin receptor. Her research on Unc5c protein revealed that the protein is integral in the development of the corpus callosum, the neurons that form the connection between the two
hemispheres Hemisphere refers to: * A half of a sphere As half of the Earth * A hemisphere of Earth ** Northern Hemisphere ** Southern Hemisphere ** Eastern Hemisphere ** Western Hemisphere ** Land and water hemispheres * A half of the (geocentric) celestia ...
of the brain. A mutation in the '' Unc5c'' gene, in association with other mutated genes, leads to a degeneration of the corpus callosum. However, if '' Unc5c'' is the only gene that is mutated, no noticeable difference in the corpus callosum is present. This is because the Unc5c receptor is only integral in the formation of the corpus callosum in early-born, deep layer neurons. These neurons comprise a small percentage of the corpus callosum relative to the late-born, upper layer neurons.


Harlequin mice

Ackerman's research has also dealt with genetic variations that lead to neurons being more susceptible to oxidative damage. This oxidative damage leads to
apoptosis Apoptosis (from grc, ἀπόπτωσις, apóptōsis, 'falling off') is a form of programmed cell death that occurs in multicellular organisms. Biochemical events lead to characteristic cell changes (morphology) and death. These changes incl ...
in many neurons. The research centers on the Harlequin mice, who have a proviral insertion in the apoptosis-inducing factor ('' AIF'') gene. The AIF protein is, as the research shows, a free radical scavenger, saving cells from and reducing oxidative damage. The proviral insertion into this gene causes an 80% reduction in expression, causing oxidative damage in neurons as they age.


Other research

Other projects Ackerman has been involved in include the mutation of a U2 snRNA and its connection to
neurodegeneration A neurodegenerative disease is caused by the progressive loss of structure or function of neurons, in the process known as neurodegeneration. Such neuronal damage may ultimately involve cell death. Neurodegenerative diseases include amyotrophic ...
, an editing defective tRNA synthetase that leads to protein misfolding and neurodegeneration, and ribosome stalling by tRNA mutations that leads to neurodegeneration.


References


External links


Jackson Laboratory Bio
{{DEFAULTSORT:Ackerman, Susan Howard Hughes Medical Investigators American women neuroscientists American neuroscientists California State University, Chico alumni University of California, Los Angeles alumni University of Maine faculty Members of the United States National Academy of Sciences Fellows of the American Academy of Arts and Sciences Living people Year of birth missing (living people) American women academics 21st-century American women scientists Members of the National Academy of Medicine