Scientists found that healthy cells damaged by chemotherapy secreted more of a protein called WNT16B, which boosts cancer cell survival. 'The increase in WNT16B was completely unexpected," said Peter Nelson, of the Fred Hutchinson Cancer Research Center.
.......Chemotherapy works by inhibiting reproduction of fast-dividing cells such as those found in tumors.
The scientists found that healthy cells damaged by chemotherapy secreted more of a protein called WNT16B which boosts cancer cell survival.
"The increase in WNT16B was completely unexpected," study co-author Peter Nelson of the Fred Hutchinson Cancer Research Center in Seattle told AFP.
The protein was taken up by tumor cells neighboring the damaged cells.
"WNT16B, when secreted, would interact with nearby tumor cells and cause them to grow, invade, and importantly, resist subsequent therapy," said Nelson.
In cancer treatment, tumors often respond well initially, followed by rapid re-growth and then resistance to further chemotherapy.
Rates of tumor cell reproduction have been shown to accelerate between treatments.
"Our results indicate that damage responses in benign cells... may directly contribute to enhanced tumor growth kinetics," wrote the team.....
full article and source: http://www.nydailynews.com/life-style/health/shock-study-chemotherapy-backfire-cancer-worse-triggering-tumor-growth-article-1.1129897
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