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~Mary
Bellis
Ann Tsukamoto is the co-patentee
of a process to isolate the human stem cell; the patent for this process
was awarded in 1991. Stem cells are located in bone marrow and serve as
the foundation for the growth of red and white blood cells. Understanding
how stem cells grow or how they might be artificially reproduced is vital
to cancer research. Ann Tsukamoto’s work has led to great advancements
in comprehending the blood systems of cancer patients and may one day lead
to a cure for the disease. Ann Tsukamoto is currently directing further research
in the areas of stem cell growth and cellular biology at Stem Cells, Inc.
According to Stem Cells, Inc., "Dr.
Ann Tsukamoto is an inventor on two issued U.S. Patents related to the
human hematopoietic stem cell.
Ann Tsukamoto joined the company in 1998 as the first
of a world-class team of researchers focused on the discovery
and development of major human stem cells, including the neural, liver
and pancreatic stem cells."
Background and History
According to the U.S. National Institute of
Health: Stem cells have two important characteristics that distinguish them
from other types of cells. First, they are unspecialized cells that renew
themselves for long periods through cell division. The second is that under
certain physiologic or experimental conditions, they can be induced to become
cells with special functions such as the beating cells of the heart muscle or
the insulin-producing cells of the pancreas.
Scientists primarily work with two kinds of cells from animals and humans: embryonic stem
cells and adult stem cells, which have
different functions and characteristics. Scientists discovered ways to obtain
or derive stem cells from early mouse embryos more than 20 years ago. Many
years of detailed study of the biology of mouse stem cells led to the
discovery by Wisconsin University biologist James Thomson, in 1998,
of how to isolate stem cells from human embryos and grow the cells in the
laboratory. These are called human embryonic stem cells.
Stem Cells
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