"In retrospect it was an awful piece of work. But I remember that what propelled me through it was my examiner, Nathan Sharon of the Weizmann Institute," says Prof. Yehiel Zick of the Weizmann Institute's Molecular Cell Biology Department. "I was 17 when I presented my project to him, and I remember that presentation as the moment when I became truly fascinated by science."
Zick's high school research project was on hemoglobin (a protein inside mature red blood cells that transports oxygen from the lungs to the tissues) and the structure of the membrane. Today, at the Weizmann Institute, he studies the molecular basis of diabetes.
Together with fellow chemistry students (and current Weizmann professors) Haim Garty and Itamar Procaccia, he completed his undergraduate studies in chemistry at the Hebrew University of Jerusalem. In 1973, at the end of his third year of chemistry, he came to the Institute as a summer student.
He had initially planned to work in the laboratory of the late Prof. Aharon Katzir, Head of the Polymer Research Department. But shortly before the academic year was due to begin, Katzir was killed in a terrorist attack on Ben-Gurion Airport. Zick recalls Katzir's loss with great sadness. "I was very impressed with Prof. Katzir's research, especially his publications on thermodynamics. He symbolized to me the ultimate scientist," he says. "For me, there is no one like him."
After the Yom Kippur War, Zick joined the Institute's graduate program in biology. His research supervisor at the time was Alex Levitski, whom Zick remembers with both humor and admiration. "The students would work all day, until about eight or nine p.m. Then at night Alex would come in and say, 'OK, let's start,' and we would begin experiments that would last until one or two in the morning. He was a wonderful teacher, and I greatly admired him."
After his first year, Zick switched to the direct Ph.D. program, under the guidance of Prof. Shmuel Shaltiel of the Biological Regulation Department, whom Zick regards as an outstanding teacher and mentor who provided him with strong foundations as a scientist.
Zick's interest in diabetes began during his postdoctoral work, when he joined the diabetes branch of the U.S. National Institutes of Health (NIH). The team he joined made headlines for its breakthrough discovery of the enzymatic functions of the insulin receptor -- a discovery that opened up the diabetes field for the next 20 years, establishing insulin signal transduction pathways.
In 1984, Zick returned to the Weizmann Institute to continue his research on diabetes. Since 1989, he has headed a diabetes research group whose findings have provided new insights into the molecular basis of insulin resistance, a condition in which cells no longer respond to ordinary levels of insulin. Their discoveries may someday lead to new treatments for diabetes based on preventing this condition.
"Research on medication for patients with diabetes is lagging far behind the research and development of new drugs for cancer, as well as autoimmune and vascular diseases," says Zick. "There are less than 50 drugs available today to treat diabetics, and less than 10% of the drugs now being developed target this disease. The reason for this is that the molecular mechanism of this disease still hasn't been found, and without that knowledge, new drugs cannot be developed. Obviously, much more study in this direction is needed."
Serial "Start-Ups"
"All beginnings are difficult," but that's fine by Prof. Haim Aviv. One of the success stories of Israel's biotechnology industry, Aviv cites beating the odds as one of his favorite occupations. He is currently setting up yet another company - his sixth.
Born in Romania, Aviv immigrated to Israel in 1950 at age ten. He spent his childhood in Rehovot and on a kibbutz, where his dream of studying agriculture took root. After obtaining a master's degree from the Hebrew University's Faculty of Agriculture in Rehovot, he began doctoral studies at the Weizmann Institute's Feinberg Graduate School in the laboratory of the late Prof. David Elson. "There," reminisces Aviv, "it seemed as though the secret of life was revealed to me in the form of molecular biology. I was completely won over." After completing his Ph.D. under the guidance of Profs. David Elson, Ada Zamir, and Michel Revel, Aviv pursued postdoctoral research with Prof. Phillip Leder at the U.S. National Institutes of Health. In 1973 he returned to the Weizmann Institute as a senior researcher and by the end of the 1980s had been promoted to the rank of associate professor.
It was during the early 1980s that Aviv recognized an unmined treasure: the bevy of first-rate scientists trained in various universities and research institutes, all of which lacked employment opportunities beyond pure research. The combination of that unexplored human treasure and specific needs that were already surfacing in the world market led him to the inevitable conclusion: the future lay in biotechnology. The knowledge attained in basic scientific research could be harnessed for the development and manufacture of products, especially in the field of biomedicine, in which science fiction-like scenarios could possibly be realized.
What today might seem almost self-evident was, in the early 1980s, a raw concept that few knew how to realize. But Aviv was determined to introduce molecular biology into the industrial production lines. He started out at the Weizmann Institute library, where he checked every entry related to the key words: Biology, Research, and Industry. "I was surprised to discover that extensive use was already being made of applied biological research in industry, although at the time most of it had to do with manufacturing antibiotics," said Aviv.
This discovery channeled the direction of Aviv's research at the Institute. "We began increasingly to use genetic engineering techniques. One of our main projects at the time was to isolate the gene responsible for secretion of the growth hormone in cows. The professional literature suggested that this gene might help significantly boost milk production levels." Success was not long in coming, and the Weizmann Institute's Yeda company registered a patent for isolating the gene. It was a pioneering effort in the field of applied genetic engineering. But, as is well known, scientific success does not guarantee financial prosperity. Studying the rules that govern the world "outside the ivory tower," Aviv came to understand that it would be best to establish an economic entity - a new company focused entirely on deriving maximum benefit from scientific discoveries.
Bidding farewell to a promising scientific career, Aviv established Bio-Technology General, the first Israeli biotech company based on genetic engineering. Today, after having founded five biotech companies, he stands at the helm of Pharmos, whose main aim is to develop a drug for head injuries and stroke.
The potential market for Pharmos's future drug is currently estimated at a billion dollars. But Aviv, never content to merely reap what he has sown, is already moving on to his next start-up challenge.