Sumu Ligonkawa

Japanese scientists
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Tonegawa Susumu was born in Japan Nagoya City , PhD, graduated from Kyoto University and University of California, San Diego . The second in his family, he became interested in chemistry in high school and later attended Kyoto University, where he received his 1987 award for "discovering the genetic principles of antibody diversity. Nobel Prize in Physiology or Medicine [1] .
Chinese name
Sumu Ligonkawa
Foreign name
Japanese Hiragana: とねがわ すすむ
nationality
Japan
Ethnic group
Yamato Nation
Date of birth
September 5th, 1939 [2]
Graduate School
Kyoto University (BA), University of California, San Diego (MA, PhD)
occupation
Scientist
Major achievement
LouisaGrossHorwitz Prize, 1982
1987 Nobel Prize in Physiology and Medicine
Place of Birth
Japan Nagoya City
Famous achievement
Antibody diversity
Blood type
Type AB

Character introduction

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EDITOR
Sumu Ligonkawa
Sumu Ligonkawa (Tonegawa, Susumu, 1939~), a Japanese biologist who was credited with his work in Immune system The results of the genetic research were obtained in 1987 Nobel Prize in Physiology or Medicine . He found the body Immune cell How the group uses a limited number of cells to produce specific antibodies to fight thousands of different viruses and bacteria.
He was the second child in the family, with an older brother and a younger brother and sister. His father was an engineer in a textile factory in the countryside, and because of his work, he had to rotate between factories, so he spent his childhood in the countryside, fully enjoying the wilderness and freedom of the country. Since his parents believed that education was the greatest asset a parent could give to their children, he became famous in Tokyo Hibiya University Enrolled, developed an interest in chemistry in high school, and entered after retaking the exam a year later Kyoto University The chemistry Department.

biography

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School career

He was born in Japan in 1939 Nagoya He later attended Hibiya High School in Tokyo. Obtained in 1963 Kyoto University He received a bachelor's degree in chemistry from the University of Kyoto and went to the University of California, San Diego, for graduate study in molecular biology that same year. He studied genetic transcription of bacteriophages and received his doctorate in 1968. in 1971, he became a molecular biologist at the Institute of Immunology in Basel, Switzerland.
In college, Professor Hiromi Yamada, who taught biochemistry, recommended him to be taught by France Institut Pasteur Scientist Farnsworth Jacobs (Francois Jacob) and Jake Monod In a paper written by Jacques Monod operon He developed a strong interest in molecular biology. He graduated from university in 1963 Kyoto University Virus research institute He studied molecular biology with Watanabe. Watanabe was one of the few scientists in Japan who had returned from the United States with complete training in molecular biology. But after two months of research, Watanabe told him that if he wanted to learn molecular biology well, the environment in Japan was not good enough, and suggested that he should go to the United States to complete his studies. At that time, the trend in Japan was to go to the United States to do postdoctoral work for a few years after graduating from doctoral programs in Japan, and then return to Japan. Mr. Ligonkawa had planned to follow the same model, but after consideration decided to pursue a doctoral program in the United States.

Road of scientific research

Ligonkawa joined the institute at a time when immunologists were debating the origins of antibodies. When an organism is infected, it produces certain special proteins to defend against infection. These special proteins are called antibodies. The "germ line" theory says that the genes that make antibodies come from Genetic code Part of, while" Somatic mutation The "somatic mutation" theory states that the antibody genes themselves recombine to code for a new antibody, so that a small number of genes can produce many variants. Kawakami Ligon demonstrated one by way of a demo DNA molecule The mutation and recombination (recombine), or rearrangement, prove the "somatic mutation" theory. This process can produce up to 10 billion antibodies, and Ligenkawa found that the mutated gene segments are separated by strips of DNA that appear to be inactive or uncoded, called introns. He also found that these intragenic regions contained a gene control component called a "enhancer." Susumu Ligonkawa's research on antibody genetics has implications for finding cancer - especially leukaemia Lymphoma, etc. hemocarcinoma The causes of disease play an important role.
In 1968, he graduated from the University of California, San Diego (under Masaki Hayashi), studying transcriptional regulation of bacteriophil. After staying in the lab for a year as a postdoctoral fellow, he entered in 1969 Salk Institute Renato Dulbecco's lab SV40 the transcribe Regulate. In the autumn of 1970, on the one hand, due to the expiration of the visa to stay in the United States, on the other hand, due to the introduction of Dulbecco, he entered the Institute of Immunology in Basel, Switzerland (then the director of Niels Kaj Jerne).

saying

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"People who dare not take risks, or who only know how to score on exams, are not suited to scientific research."
"The most important talent of a scientist is the capacity for doubt and a good imagination."