Mitzi Kuroda
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Mitzi Kuroda is a professor of
genetics Genetics is the study of genes, genetic variation, and heredity in organisms.Hartl D, Jones E (2005) It is an important branch in biology because heredity is vital to organisms' evolution. Gregor Mendel, a Moravian Augustinian friar wor ...
at
Harvard Medical School Harvard Medical School (HMS) is the graduate medical school of Harvard University and is located in the Longwood Medical Area of Boston, Massachusetts. Founded in 1782, HMS is one of the oldest medical schools in the United States and is consi ...
and
Brigham and Women's Hospital Brigham and Women's Hospital (BWH) is the second largest teaching hospital of Harvard Medical School and the largest hospital in the Longwood Medical and Academic Area, Longwood Medical Area in Boston, Massachusetts. Along with Massachusetts Gener ...
. She was an
HHMI 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 ...
Investigator at Brigham and Women's Hospital from 1993 to 2007. She has identified many genes and enzymes involved in
epigenetic In biology, epigenetics is the study of stable phenotypic changes (known as ''marks'') that do not involve alterations in the DNA sequence. The Greek prefix '' epi-'' ( "over, outside of, around") in ''epigenetics'' implies features that are "o ...
regulation in the fruit fly. In addition, her research has shown the importance of epigenetics in cancer. Her laboratory has identified
chromatin remodeling Chromatin remodeling is the dynamic modification of chromatin architecture to allow access of condensed genomic DNA to the regulatory transcription machinery proteins, and thereby control gene expression. Such remodeling is principally carried out ...
signals and processes that predispose cells to be transformed into cancer cells.


Early life and education

Mitzi Kuroda was born in 1958 in
Fayetteville, Arkansas Fayetteville () is the second-largest city in Arkansas, the county seat of Washington County, and the biggest city in Northwest Arkansas. The city is on the outskirts of the Boston Mountains, deep within the Ozarks. Known as Washington until ...
, where she attended elementary and junior high schools. She spent a year in
Tokyo Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, with an estimated 37.468 ...
before returning to attend Fayetteville High School where she graduated as valedictorian in 1977. Mitzi Kuroda said, "When I learned about
recombinant DNA Recombinant DNA (rDNA) molecules are DNA molecules formed by laboratory methods of genetic recombination (such as molecular cloning) that bring together genetic material from multiple sources, creating sequences that would not otherwise be foun ...
in college, it captured my imagination. I had to toss aside all my plans to 'save the world' because the ability to make specific DNA molecules for molecular genetic experiments was just too enticing." Kuroda received her BS in biology from
Tulane University Tulane University, officially the Tulane University of Louisiana, is a private university, private research university in New Orleans, Louisiana. Founded as the Medical College of Louisiana in 1834 by seven young medical doctors, it turned into ...
in 1981 and her PhD in biological sciences at
Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is consider ...
, working with mentor
Charles Yanofsky Charles Yanofsky (April 17, 1925 – March 16, 2018) was an American geneticist on the faculty of Stanford University who contributed to the establishment of the one gene-one enzyme hypothesis and discovered attenuation, a riboswitch mechanis ...
. Kuroda's work with Yanofsky involved collaboration with Iwona Stroynowski to reveal how a
riboswitch In molecular biology, a riboswitch is a regulatory segment of a messenger RNA molecule that binds a small molecule, resulting in a change in production of the proteins encoded by the mRNA. Thus, an mRNA that contains a riboswitch is directly invo ...
mechanism called bacterial attenuation regulates
operon In genetics, an operon is a functioning unit of DNA containing a cluster of genes under the control of a single promoter. The genes are transcribed together into an mRNA strand and either translated together in the cytoplasm, or undergo splic ...
s for
amino acid Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. Although hundreds of amino acids exist in nature, by far the most important are the alpha-amino acids, which comprise proteins. Only 22 alpha am ...
biosynthesis.


Academic research career

After postdoctoral work at Stanford, Kuroda became a faculty member at
Baylor College of Medicine Baylor College of Medicine (BCM) is a medical school and research center in Houston, Texas, within the Texas Medical Center, the world's largest medical center. BCM is composed of four academic components: the School of Medicine, the Graduate Sc ...
. She rose through the ranks at Baylor to full professor. In 2003, she moved to Harvard Medical School. Kuroda initially concentrated on regulation processes in the fruit fly. Her citation by the National Academy of Sciences upon her election said, "Her lab identified the MSL ribonucleoprotein complex, and discovered that it assembles and spreads from sites of non-coding roX RNA synthesis to regulate genes specifically on the fruit fly male
X chromosome The X chromosome is one of the two sex-determining chromosomes (allosomes) in many organisms, including mammals (the other is the Y chromosome), and is found in both males and females. It is a part of the XY sex-determination system and XO sex-d ...
. Furthermore, they dissected the sex-specific regulation of this process, and the molecular mechanism by which the MSL complex influences transcriptional elongation." She has developed an important technique in which epigenetic regulators and their targets are
cross-linked In chemistry and biology a cross-link is a bond or a short sequence of bonds that links one polymer chain to another. These links may take the form of covalent bonds or ionic bonds and the polymers can be either synthetic polymers or natural ...
, then analyzed via
mass spectrometry Mass spectrometry (MS) is an analytical technique that is used to measure the mass-to-charge ratio of ions. The results are presented as a ''mass spectrum'', a plot of intensity as a function of the mass-to-charge ratio. Mass spectrometry is use ...
. In 2017, her laboratory discovered a master regulatory complex for ''
Drosophila ''Drosophila'' () is a genus of flies, belonging to the family Drosophilidae, whose members are often called "small fruit flies" or (less frequently) pomace flies, vinegar flies, or wine flies, a reference to the characteristic of many species ...
'' development. Recently, she has begun studies of regulation in cancer cells. Kuroda's laboratory has shown that BRD4-NUT regulator leads to cancer via causing
histone modification In biology, histones are highly basic proteins abundant in lysine and arginine residues that are found in eukaryotic cell nuclei. They act as spools around which DNA winds to create structural units called nucleosomes. Nucleosomes in turn ar ...
changes that produce a cascade of remodeling in which domains are opened to allow inappropriate expression of genes by
transcription Transcription refers to the process of converting sounds (voice, music etc.) into letters or musical notes, or producing a copy of something in another medium, including: Genetics * Transcription (biology), the copying of DNA into RNA, the fir ...
of their RNA.


Honors and awards

*1992
Searle Scholar The Searle Scholars Program is a career development award made annually to the 15 young US professionals in biomedical research and chemistry considered most promising. The award was established in 1980 by a donation from the Searle family, and is ...
https://www.searlescholars.net/person/253 *2013
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 ...
*National Academy of Arts and Sciences


Personal life

Kuroda is married to geneticist
Stephen Elledge Stephen Joseph Elledge (born August 7, 1956, in Paris Illinois) is an American geneticist. He is currently the Gregor Mendel Professor of Genetics and Medicine in the Department of Genetics at Harvard Medical School and in the Division of Geneti ...
, and they have two grown children.


Selected works

* * * * * *


References

{{DEFAULTSORT:Kuroda, Mitzi American women biologists Living people American geneticists Harvard Medical School faculty Epigeneticists Developmental biologists 1958 births American women academics 21st-century American women