Navigation Links
Can vitamin A turn back the clock on breast cancer?
Date:3/31/2014

(PHILADELPHIA) A derivative of vitamin A, known as retinoic acid, found abundantly in sweet potato and carrots, helps turn pre-cancer cells back to normal healthy breast cells, according to research published this month in the International Journal of Oncology. The research could help explain why some clinical studies have been unable to see a benefit of vitamin A on cancer: the vitamin doesn't appear to change the course of full-blown cancer, only pre-cancerous cells, and only works at a very narrow dose.

Because cells undergo many changes before they become fully aggressive and metastatic, Sandra V. Fernandez, Ph.D., Assistant Research Professor of Medical Oncology at Thomas Jefferson University, and colleagues, used a model of breast cancer progression composed of four types of cells each one representing a different stage of breast cancer: normal, pre-cancerous, cancerous and a fully aggressive model.

When the researchers exposed the four breast cell types to different concentrations of retinoic acid one of the chemicals that the body converts vitamin A into they noticed a strong change in the pre-cancerous cells. Not only did the pre-cancerous cells begin to look more like normal cells in terms of their shape, they also changed their genetic signature back to normal. Dr. Fernandez's pre-cancerous cells had 443 genes that were either up or downregulated on their way to becoming cancerous. All of these genes returned to normal levels after treatment with retinoic acid. "It looks like retinoic acid exerts effects on cancer cells in part via the modulation of the epigenome," says Fernandez.

"We were able to see this effect of retinoic acid because we were looking at four distinct stages of breast cancer," says Dr. Fernandez. "It will be interesting to see if these results can be applied to patients."

Interestingly, the cells that were considered fully cancerous did not respond at all to retinoic acid, suggesting that there may be a small window of opportunity for retinoic acid to be helpful in preventing cancer progression. In addition, the researchers showed that only one concentration of retinoic acid (about one micro Molar) produced the anti-cancer effects. Lower concentrations gave no change, and higher concentrations produced a smaller effect.

The next step will be to try to learn whether the amount of retinoic acid required can be maintained in an animal model, and if that concentration will have the same effects as Dr. Fernandez observed in cells. If those studies show the same effect, the next step would be to test whether these observations hold true in humans.


'/>"/>

Contact: Edyta Zielinska
edyta.zielinska@jefferson.edu
215-955-5291
Thomas Jefferson University
Source:Eurekalert

Related biology news :

1. Study finds no evidence that vitamin D supplements reduce depression
2. Vitamin D increases breast cancer patient survival
3. New research indicates causal link between vitamin D, serotonin synthesis and autism
4. Prenatal vitamin A deficiency tied to postnatal asthma
5. Vitamin C and E supplements hampers endurance training
6. Vitamin A used in acne medicines may help autoimmune and transplant patients
7. Low vitamin D levels during pregnancy may increase risk of severe preeclampsia
8. FASEB announces 2014 Science Research Conference: Folic Acid, Vitamin B12 and One Carbon Metabolism
9. Boosting vitamin D could slow progression, reduce severity of multiple sclerosis
10. Vitamin D supplements reduce pain in fibromyalgia sufferers
11. Higher vitamin D levels associated with better cognition and mood in PD patients
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/15/2016)... SAN JUAN, Puerto Rico , Jan. 15, 2016 ... forcing companies big and small to find new ways ... data driven culture. iOS and ... their device based on biometrics, transforming it into a ... can request that users swipe their fingerprint on their ...
(Date:1/13/2016)... , January 13, 2016 /PRNewswire/ ... announced the addition of the  "India ... Estimation & Forecast (2015-2020)"  report ... http://www.researchandmarkets.com/research/7h6hnn/india_biometrics ) has announced the addition ... Identification Market - Estimation & Forecast ...
(Date:1/11/2016)... 2016  higi, the leading retail and omni-channel community ... web and mobile, today announced it has closed ... investors. --> --> ... innovate higi,s health platform – its network of ... including expanding services and programs to retail partners ...
Breaking Biology News(10 mins):
(Date:2/12/2016)... 2016  PTC Therapeutics, Inc. (NASDAQ: PTCT ... to Realize Innovation, Vision and Empowerment) grant award ... funds to patient advocacy organizations to develop unique ... to the rare disease community by increasing awareness, ... advocates. Mary Frances Harmon , ...
(Date:2/11/2016)... Feb. 11, 2016  Vermillion, Inc. (NASDAQ: VRML ... today announced the formation of the Steering Committee for ... --> Pelvic masses can present physicians ... management. Once pregnancy is ruled out, pelvic masses may ... advanced endometriosis, benign ovarian tumors and gastrointestinal and urinary ...
(Date:2/11/2016)... , Feb. 11, 2016  Wellcentive today announced ... Portland, Oregon -based community care organization ... population health analytics, quality reporting and care management ... strengthen its team of quality managers, analysts and ... the provider groups serving FamilyCare members. ...
(Date:2/11/2016)... --  BioInformant announces the February 2016 release of ... Tools, and Technologies – Market Size, Segments, Trends, and ... The first and only market research ... has more than a decade of historical information on ... cell type. This powerful 175 page global strategic report ...
Breaking Biology Technology: