Fructose Identified as Surprise Driver of Ovarian Cancer Metastasis After Chemotherapy

A new study from The Wistar Institute查看公司主页 has revealed that fructose查看药品详情, a simple sugar ubiquitous in modern diets, acts as a key signaling molecule that drives the spread of ovarian cancer (搜索)搜索该疾病 following chemotherapy. Published in Nature Aging, the findings uncover a previously unrecognized mechanism by which treatment-surviving tumor cells promote metastasis and raise provocative questions about the interplay between diet, cholesterol查看药品详情-lowering medications, and cancer progression.

The research addresses a central challenge in ovarian cancer (搜索)搜索该疾病 treatment: although patients nearly universally receive platinum-based chemotherapy (搜索)搜索该药品 and many respond well initially, the disease recurs in most patients and spreads through the abdominal cavity. That metastatic spread accounts for roughly 90% of ovarian cancer-related deaths.

Surviving Cells as Active Signalers

Prior research has established that cancer cells not killed by chemotherapy contribute to recurrence, partly through their ability to release a complex mix of signaling molecules. The Wistar team, led by Aidan Cole, Ph.D., a postdoctoral fellow, and senior author Katherine Aird, Ph.D., designed an experiment to isolate the effect of these molecular signals.

“Some cancer cells that survive chemotherapy aren't dividing anymore, but they're still biologically active,” said Cole. “Instead, they continue to release molecules that send signals to nearby cells. Our study is among the first to show that a nutrient—in this case, fructose查看药品详情—can act as one of those signals.”

The researchers collected the molecules released by chemotherapy-surviving cells and demonstrated that these factors alone could significantly increase the spread of cancer cells. “As far as we know, this is the first time anyone has shown, in a preclinical model rather than just a dish, that it's the molecules these cells release—not the cells themselves—that drive the cancer's spread,” Cole noted.

Fructose查看药品详情 as the Messenger

Further analysis pinpointed fructose查看药品详情 as the signal produced by surviving cells that drives increased metastatic behavior. The team discovered that fructose suppresses cholesterol查看药品详情 within neighboring cells. Cholesterol serves as a biological glue that helps cells adhere to one another; decreased cholesterol levels allow cancer cells to more easily escape and spread.

The fructose查看药品详情 finding extends beyond chemotherapy contexts. The researchers found that even without chemotherapy treatment, consuming the high levels of fructose found in sugary drinks can also signal cancer cells to spread. This is particularly significant given that high-fructose corn syrup accounts for approximately 8–20% of daily caloric intake in some individuals in the United States.

Unlike many cancer risk factors beyond patient control, fructose查看药品详情 consumption can be modified through dietary choices. While the effectiveness of limiting fructose intake has not yet been tested directly in patients, the study raises the possibility that nutrition could influence cancer progression in previously unrecognized ways.

Statins (搜索)搜索该药品 and Cholesterol查看药品详情: A Clinical Question

The finding that fructose查看药品详情 lowers cholesterol查看药品详情 production carries important clinical implications. Statins (搜索)搜索该药品, cholesterol-lowering drugs taken by approximately 39 million people in the United States, also reduce cholesterol production. The research team found that statins alone decreased the intercellular adhesion that keeps cells together, promoting escape.

“We haven't tested this effect in patients yet, but it raises questions about combining cholesterol查看药品详情-lowering drugs with chemotherapy, especially since ovarian cancer (搜索)搜索该疾病 is most common in postmenopausal women who are often already on statins (搜索)搜索该药品,” said Aird.

The researchers stress, however, that there is not yet any reason for patients already taking statins (搜索)搜索该药品 to discontinue them. Follow-up experiments are being designed to test whether these findings apply to other cancer types beyond ovarian cancer (搜索)搜索该疾病.