Green Tea May Fight Lung Cancer
Green Tea Extract Tweaks Lung Cancer Cells in Lab Tests
March 12, 2007 -- Green tea may fight lung cancer and could inspire the
creation of new lung cancer drugs, scientists report.
But it may be too soon to count on a cup of green tea to curb lung cancer.
So far, the scientists have only tested green tea extract against human lung
cancer cells in test tubes, not people.
The researchers included Qing-Yi Lu, PhD, of the Center for Human Nutrition
at the University of California at Los Angeles (UCLA).
Lu and colleagues exposed a sample of human lung cancer cells to a
decaffeinated green tea extract. The lung cancer cells marinated in the green
tea extract for up to three days.
The green tea extract remodeled a certain protein in the lung cancer cells.
As a result, the lung cancer cells became more likely to stick together and
less likely to move, the study shows.
Antioxidants in green tea may have tweaked the cancer cell protein, but it's
not clear whether one antioxidant deserves all the credit or whether several
antioxidants worked together, the researchers note.
The study doesn’t prove that drinking green tea curbs lung cancer in
However, it may be possible to make new lung cancer drugs based on green tea
extract, Lu's team suggests. Such drugs would target the lung cancer protein
remodeled by the green tea extract in the lab tests.
The study appears online in Laboratory Investigation.