Featured Research

from universities, journals, and other organizations

Preventing eggs' death from chemotherapy: Scientists discover cause of immature eggs' death from cancer drug and how to prevent it

Date:
June 17, 2013
Source:
Northwestern University
Summary:
Young women who have cancer treatment often lose their fertility because chemotherapy and radiation can damage or kill their immature ovarian eggs, called oocytes. Now, scientists have found the molecular pathway that can prevent the death of immature ovarian eggs due to chemotherapy, potentially preserving fertility and endocrine function. Scientists achieved this in mice by adding a currently approved chemotherapy drug, imatinib mesylate, to another chemotherapy drug cisplatin.

Young women who have cancer treatment often lose their fertility because chemotherapy and radiation can damage or kill their immature ovarian eggs, called oocytes. Now, Northwestern Medicineฎ scientists have found the molecular pathway that can prevent the death of immature ovarian eggs due to chemotherapy, potentially preserving fertility and endocrine function.

Scientists achieved this in female mice by adding a currently approved chemotherapy drug, imatinib mesylate, to another chemotherapy drug cisplatin.

The results will be presented Monday, June 17, at The Endocrine Society's 95th Annual Meeting in San Francisco.

"This research advances the efforts to find a medical treatment to protect the fertility and hormone health of girls and young women during cancer treatment, " said So-Youn Kim, the lead investigator and a postdoctoral fellow in the laboratory of Teresa Woodruff, chief of fertility preservation at Northwestern University Feinberg School of Medicine.

Adding imatinib mesylate to the drug cisplatin blocks the action of a protein that triggers a cascade of events resulting in death of the immature eggs. Kim discovered the protein that triggers the oocyte's ultimate death is Tap63.

Previous research suggested that imatinib is a fertility-protecting drug against cisplatin, but reports of the drug's effectiveness have been contradictory, Kim said. Her research confirms its effectiveness in an animal model.

She is currently testing imatinib with other chemotherapy agents to see if it also protects fertility in combination with them.

To demonstrate that imatinib protects oocytes against cisplatin, Kim and colleagues cultured ovaries (containing the immature eggs) from five-day-old mice with imatinib and cisplatin for 96 hours. The ovaries were then placed in a kidney capsule in the host mice to keep the ovaries alive. Two weeks later, the immature eggs were still alive. The imatinib did not block cisplatin-induced DNA damage, but Kim believes the eggs may recover and repair the damage over time.

"Previous reports have shown that chemotherapy and radiation-treated oocytes are able to recover from DNA damage," Kim said.


Story Source:

The above story is based on materials provided by Northwestern University. Note: Materials may be edited for content and length.


Cite This Page:

Northwestern University. "Preventing eggs' death from chemotherapy: Scientists discover cause of immature eggs' death from cancer drug and how to prevent it." ScienceDaily. ScienceDaily, 17 June 2013. <www.sciencedaily.com/releases/2013/06/130617142332.htm>.
Northwestern University. (2013, June 17). Preventing eggs' death from chemotherapy: Scientists discover cause of immature eggs' death from cancer drug and how to prevent it. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2013/06/130617142332.htm
Northwestern University. "Preventing eggs' death from chemotherapy: Scientists discover cause of immature eggs' death from cancer drug and how to prevent it." ScienceDaily. www.sciencedaily.com/releases/2013/06/130617142332.htm (accessed July 31, 2014).

Share This




More Health & Medicine News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) — Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Concern Grows Over Worsening Ebola Crisis

Concern Grows Over Worsening Ebola Crisis

AFP (July 30, 2014) — Pan-African airline ASKY has suspended all flights to and from the capitals of Liberia and Sierra Leone amid the worsening Ebola health crisis, which has so far caused 672 deaths in Guinea, Liberia and Sierra Leone. Duration: 00:43 Video provided by AFP
Powered by NewsLook.com
At Least 20 Chikungunya Cases in New Jersey

At Least 20 Chikungunya Cases in New Jersey

AP (July 30, 2014) — At least 20 New Jersey residents have tested positive for chikungunya, a mosquito-borne virus that has spread through the Caribbean. (July 30) Video provided by AP
Powered by NewsLook.com
Xtreme Eating: Your Daily Caloric Intake All On One Plate

Xtreme Eating: Your Daily Caloric Intake All On One Plate

Newsy (July 30, 2014) — The Center for Science in the Public Interest released its 2014 list of single meals with whopping calorie counts. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

    Technology News



      Save/Print:
      Share:  

      Free Subscriptions


      Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

      Get Social & Mobile


      Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

      Have Feedback?


      Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
      Mobile iPhone Android Web
      Follow Facebook Twitter Google+
      Subscribe RSS Feeds Email Newsletters
      Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins