MAR 26, 2017 10:29 AM PDT

Molecule Released During Exercise Could Help Cancer Thrive

WRITTEN BY: Xuan Pham

We’ve been repeatedly told the gospel of exercise, but researchers are now suspecting a molecule released during heavy exercise may be helping cancer cells form. Lactate may be converting healthy cells into cancerous ones, scientists say.

When we exercise, sugars are broken down into smaller components in a process known as glycolysis. One of these smaller byproduct molecules is lactate. Heavy exercise causes the accumulation of lactate in the blood and muscles, leading to oxygen debt and fatigue.

This process of oxygen deprivation and lactate accumulation is similar to what happens in some cancer cells. In fact, this very phenomenon was described in 1923 by Otto Warburg, who observed that cancer cells consumed more glucose and had more lactate buildup than normal cells. The phenomenon has since been dubbed the “Warburg effect.”

Does lactate have a role in oncogenesis – the process by which healthy cells get sick and turn into cancer cells? If so, how does lactate benefit cancer? Scientists at the University of Colorado-Boulder's Sports Medicine and Performance Center decided to revisit cancer’s metabolism.

The authors suggest that “lactate is probably the only metabolic compound involved and necessary” in carcinogenesis. This includes “angiogenesis immune escape, cell migration, metastasis and self-sufficient metabolism.”

But how do the conclusions and hypotheses about lactate fit with the gospels about exercise? The authors suggest that people who exercise regularly have adapted to better prevent and process lactate buildup. By contrast, lactate may accumulate easier in sedentary people, which may explain the higher cancer risks.

"With this paper, we open a whole new door for understanding cancer, showing for the first time that lactate is not only present, but mandatory for every step in its development,” said Inigo San Millan, the study’s first author. "We hope to sound the alarm for the research community that to stop cancer you have to stop lactate," he says.

Additional sources: MNT

About the Author
  • I am a human geneticist, passionate about telling stories to make science more engaging and approachable. Find more of my writing at the Hopkins BioMedical Odyssey blog and at TheGeneTwist.com.
You May Also Like
JUL 15, 2020
Immunology
Immune Memory to Thwart Recurring Cancer
JUL 15, 2020
Immune Memory to Thwart Recurring Cancer
Preventing cancer from returning in the body is an integral part of any anti-cancer treatment plan. New discoveries from ...
JUL 30, 2020
Cardiology
Protecting the Heart Against Cardiotoxicity
JUL 30, 2020
Protecting the Heart Against Cardiotoxicity
Doxorubicin is a potent chemotherapy drug used for many different cancers. Unfortunately, like all chemotherapies, doxor ...
JUL 26, 2020
Cancer
Diet confirmed to be linked to prostate cancer risk
JUL 26, 2020
Diet confirmed to be linked to prostate cancer risk
A study published in Nutrients earlier this summer points toward diet as a key risk factor for prostate cancer ...
JUL 28, 2020
Cancer
Should you get your DNA test for community-based genetic screening?
JUL 28, 2020
Should you get your DNA test for community-based genetic screening?
In a new study published in the journal Nature Medicine, researchers champion the potential of community-based gene ...
SEP 12, 2020
Cancer
Treating cancer with the botanical andrographis
SEP 12, 2020
Treating cancer with the botanical andrographis
A study from City of Hope published in the journal Carcinogenesis reports that the use of the natural botanical And ...
SEP 14, 2020
Cancer
We are too uneducated on the risks of colon cancer
SEP 14, 2020
We are too uneducated on the risks of colon cancer
A study conducted by researchers from Florida Atlantic University's Schmidt College of Medicine suggests that too ma ...
Loading Comments...