Featured Research

from universities, journals, and other organizations

NASA investigates proton radiation effects on cells

Date:
August 4, 2012
Source:
NASA
Summary:
A team of researchers has found radiation from protons could further enhance a process that occurs during tumor progression. This information may help lead to better methods to protect astronauts from the harmful effects of radiation in space, as well as help cancer researchers on Earth better understand the effects of radiation treatment on the human body.

A team of researchers at NASA's Johnson Space Center in Houston and Lawrence Berkeley National Laboratory in Berkeley, Calif., has found radiation from protons could further enhance a process that occurs during tumor progression. This information may help lead to better methods to protect astronauts from the harmful effects of radiation in space, as well as help cancer researchers on Earth better understand the effects of radiation treatment on the human body.

Related Articles


NASA is particularly interested in this research because protons, which are charged subatomic particles, are the main source of space radiation astronauts receive during spaceflights. The study was part of NASA's ongoing effort to learn how to mitigate the effects of radiation during long-duration missions to destinations beyond low Earth orbit, such as asteroids and Mars.

"Our paper makes new discoveries on the potential risks from low doses of protons that occur outside of the tumor during radiation therapy, and to all tissues for astronauts exposed to space radiation," said Francis A. Cucinotta, chief scientist for the Human Research Program Space Radiation Program Element at Johnson and one of the authors of the paper.

The objective of the researchers was to study the biological effects of low-energy protons on epithelial cells (membranous tissues found throughout the body) and the protons' propensity to enhance a process that occurs during tumor progression. This process is called epithelial-mesenchymal transition (EMT), which has been associated with cancer progression. EMT also has been linked to radiation-induced fibrosis, one of the most common late effects of radiotherapy.

Notably, the study revealed protons alone can induce EMT-associated changes in normal human epithelial cells. Although the total body dose received in space is moderately low compared to what is received in radiotherapy, this study reveals that low doses of protons still may prompt EMT and result in potentially detrimental effects.

These studies were conducted at Johnson and at the NASA Space Radiation Laboratory at Brookhaven National Laboratory, Upton, N.Y.

Results of the study were published as "Protons Sensitize Epithelial Cells to Mesenchymal Transition" in the July 23 issue of the journal PLoS ONE.


Story Source:

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


Journal Reference:

  1. Minli Wang, Megumi Hada, Janapriya Saha, Deepa M. Sridharan, Janice M. Pluth, Francis A. Cucinotta. Protons Sensitize Epithelial Cells to Mesenchymal Transition. PLoS ONE, 2012; 7 (7): e41249 DOI: 10.1371/journal.pone.0041249

Cite This Page:

NASA. "NASA investigates proton radiation effects on cells." ScienceDaily. ScienceDaily, 4 August 2012. <www.sciencedaily.com/releases/2012/08/120804083925.htm>.
NASA. (2012, August 4). NASA investigates proton radiation effects on cells. ScienceDaily. Retrieved November 22, 2014 from www.sciencedaily.com/releases/2012/08/120804083925.htm
NASA. "NASA investigates proton radiation effects on cells." ScienceDaily. www.sciencedaily.com/releases/2012/08/120804083925.htm (accessed November 22, 2014).

Share This


More From ScienceDaily



More Space & Time News

Saturday, November 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Google Announces Improvements To Balloon-Borne Wi-Fi Project

Google Announces Improvements To Balloon-Borne Wi-Fi Project

Newsy (Nov. 21, 2014) In a blog post, Google said its balloons have traveled 3 million kilometers since the start of Project Loon. Video provided by Newsy
Powered by NewsLook.com
Crowdfunded Moon Mission Offers To Store Your Digital Memory

Crowdfunded Moon Mission Offers To Store Your Digital Memory

Newsy (Nov. 19, 2014) Lunar Mission One is offering to send your digital memory (or even your DNA) to the moon to be stored for a billion years. Video provided by Newsy
Powered by NewsLook.com
Accidents Ignite Debate on US Commercial Space Travel

Accidents Ignite Debate on US Commercial Space Travel

AFP (Nov. 19, 2014) Serious accidents with two US commercial spacecraft within a week of each-other in October have re-ignited the debate over the place of private corporations in the exploration of space. Duration: 02:08 Video provided by AFP
Powered by NewsLook.com
Lunar Mission One Could Send Your Hair to The Moon

Lunar Mission One Could Send Your Hair to The Moon

Buzz60 (Nov. 19, 2014) A British-led venture called Lunar Mission One plans to send a module to the moon with keepsakes from Earth. Vanessa Freeman (@VanessaFreeTV) tells you how to get your photos and DNA onboard. Video provided by Buzz60
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:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

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