Clara Franzini-Armstrong

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Clara Franzini-Armstrong
Born (1938-10-03) 3 October 1938 (age 87)
NationalityAmerican (Italian descent)
Alma mater University of Pisa
Known forElectron microscopy studies of skeletal and cardiac muscles
SpouseClay Armstrong
Scientific career
FieldsCell and Developmental Biology
Institutions University of Pennsylvania
Website https://cdb.med.upenn.edu/people/clara-armstrong/

Clara Franzini-Armstrong (born on 3 October 1938) is an electron microscopist [1] and a professor emerita of cell and developmental biology at the University of Pennsylvania. [2] [3]

Contents

Early life

Clara Franzini was born in Florence [4] on 3 October 1938. She lived with her mother, father, and three brothers; Paolo, Carlo, and Marco. Her father was an atomic physicist and her mother had a physics degree. She became interested in science during her schooling. [5]

Education

Franzini-Armstrong enrolled in the biological sciences program at the University of Pisa in 1956 and earned her Laurea degree in 1960. [6] She became interested in electron microscopy after the Italian Ministry of Education gave an electron microscope to the University of Pisa. [7] Franzini-Armstrong completed postdoctoral training at Keith R. Porter's laboratory at Harvard University. [7]

Career

From 1960 to 1961, Franzini-Armstrong was an assistant professor of pathology at the University of Pisa. From 1963 to 1964, she worked at the National Institutes of Health with R. J. Podolsky and earned a Master of Research degree in muscle physiology. [8] From 1964 to 1966, she worked as a research assistant at University College London, with Andrew Huxley, where she studied contractile machinery and optical methods in Huxley’s laboratory. During this period, she also earned a second Master of Research degree in muscle structure. From 1967 to 1969, she worked as a research associate in physiology at Duke University. [9] [10]

From 1969 to 1972, Franzini-Armstrong worked as an associate in physiology at the University of Rochester. [8] She then became an assistant professor in physiology at the University of Rochester from 1972 to 1975, before becoming an associate professor of anatomy at the University of Pennsylvania from 1975 to 1981. She was a professor of anatomy at the University of Pennsylvania from 1981 to 1992, and then a professor of cell and developmental biology at the University of Pennsylvania from 1992 to 2007.

Franzini-Armstrong has been a professor emerita of cell and developmental biology at the Perelman School of Medicine at the University of Pennsylvania since 2007. [11] She and her husband, Clay Armstrong, are members of the National Academy of Sciences; they are the only married couple to both be members. [12]

Research

The first major breakthrough in Franzini-Armstrong's career was discovering that that T-tubules open at the cell surface, which helped explain how muscles contract. [6]

Franzini-Armstrong's research focuses on the organization of membranes and macromolecular complexes responsible for excitation-contraction coupling in cardiac and skeletal muscles. [13] Her structural work has been divided into four main phases:

  1. The first phase focused on calcium cycling, particularly on defining the distribution and nature of the two membrane systems involved in this specific type of cycling. [14]
  2. The second phase involved identifying the location of the channels that release calcium during muscle activation. She also demonstrated that, in muscles with high activity rates, a limiting factor is the density of the pump protein rather than the density of calcium release channels. [7]
  3. The third phase identified the relationship between the L-type calcium channels of the plasmalemma and the T-tubules in cardiac and skeletal muscles. Specifically, she worked with CaV channels, or dihydropyridine receptors (DHPRs), and the calcium release channels of the sarcoplasmic reticulum (RyRs). [7]
  4. The fourth phase examined the supramolecular complex that enables several molecules in the sarcoplasmic reticulum, which regulate calcium release, to interact with one another. Franzini-Armstrong continues to employ structural approaches to better understand the various molecular interactions. [13] [11]

Personal life

Franzini-Armstrong is married to Clay Armstrong, an expert in channel electrophysiology and professor of physiology at the University of Pennsylvania. [6] They have one son and three daughters.

Honors and awards

Franzini-Armstrong's honors include a Fellowship from Scuola Normale Superiore from 1956 to 1960 in Pisa, Italy, followed by a postdoctoral fellowship (Perfezionamento) from 1961 to 1990. [11] From 1983 to 1987, she was a member of the molecular cytology study section. In 1988, she was the director of the Gordon Research Conference on excitation-contraction coupling. From 1988–1990, she was a member of the Scientific Advisory Committee of the Muscular Dystrophy Association, and a council member of the Biophysical Society. [11] In 1989, she was the co-recipient (with Dr. Knox Chandler) of the K.C. Cole Award of the Biophysical Society. In 1990, and she became the co-chairman of the Biophysical Society Symposium on Excitation-Contraction Coupling. In 1995, she was inducted into the National Academy of Sciences, and in 1997, she was awarded an honorary MD from the University of Pisa. In 2001, she was inducted into the Royal Society London as a foreign member. She was inducted into the European Academy of Sciences in 2005, followed by the 2007 Founder's Award from the Biophysical Society. [7]

References

  1. "Biophysicists in Profile: Clara Franzini-Armstrong". The Biophysics Society Newsletter. August 2009.
  2. "Clara Franzini-Armstrong, Ph.D. Cell and Developmental Biology; Faculty and Administration". Perelman School of Medicine, University of Pennsylvania. 14 August 2008.
  3. "Welcome to The Pennsylvania Muscle Institute". Perelman School of Medicine, University of Pennsylvania. 14 August 2008.
  4. "Penn's 2017 Commencement Speaker and Honorary Degree Recipients". almanac.upenn.edu. Retrieved 2025-11-04.
  5. Fondazione Onda ETS (2017). Donne e scienza. Storie di vita di alcune delle Top Italian Women Scientists nella ricerca Neuroscienze, Scienze Biomediche, Scienze Cliniche [Women and Science. Life stories of some of the top Italian women scientists in neuroscience, biomedical sciences, and clinical sciences.] (in Italian). Fondazione Onda ETS. pp. 68–72. Retrieved 2025-11-04 via WordPress.{{cite book}}: CS1 maint: url-status (link)
  6. 1 2 3 "Clara Franzini-armstrong profile on University of Pennsylvania website". Clara Franzini-Armstrong, Ph.D.
  7. 1 2 3 4 5 Adler, Elizabeth M. (Nov 2013). "Friends of Physiology: An Interview with Clara Franzini-Armstrong and Clay Armstrong". The Journal of General Physiology. 142 (5): 479. doi:10.1085/jgp.201311115. PMC   3813384 . PMID   24166877.
  8. 1 2 "Porter Lecture - "From Membranes to Molecules. A Morphologist View of How Muscle Controls Calcium Movements"". The Marine Biological Laboratory. 2008.
  9. "Marine Biological Laboratory". comm.archive.mbl.edu. Retrieved 2025-11-04.
  10. Franzini-Armstrong, Clara (1970). "Details of the I band struture as revealed by the localization of ferritin". Tissue and Cell. 2 (2): 327–338. doi:10.1016/S0040-8166(70)80023-4.
  11. 1 2 3 4 "Clara Franzini-Armstrong". Department of Molecular Biology. 2015.
  12. Kreeger, Karen (2013). "Celebrating a Lifetime of Dual Career Success". Penn Medicine News Blog: Archives.
  13. 1 2 "College of Veterinary Medicine". Kansas State University. 8 July 2014.
  14. Shamoo, Adil E.; Ambudkar, Indu S. (January 1984). "Regulation of calcium transport in cardiac cells" . Canadian Journal of Physiology and Pharmacology. 62 (1): 9–22. doi:10.1139/y84-002. ISSN   0008-4212. PMID   6143603.