Featured Research

from universities, journals, and other organizations

Study could aid in development of 'liquid biopsy' screening, diagnostic tests for bladder cancer

Date:
January 21, 2014
Source:
Loyola University Health System
Summary:
Findings from a study ultimately could lead to tests to screen for and diagnose bladder cancer.

Findings from a Loyola University Medical Center study ultimately could lead to tests to screen for and diagnose bladder cancer.

Bladder cancer is the fourth most common non-skin cancer. But there is no good screening test for it, and there has been limited progress in characterizing how aggressive an individual’s bladder cancer will be.

Loyola researchers studied microscopic droplets, called exosomes, that are shed by cancer cells and are found in urine. Understanding the biology of exosomes could lead to the development of a screening test, which would require a simple urine sample, said lead researcher Gopal Gupta, MD.

Exosomes derived from a urine sample also might help a physician determine how aggressive the cancer is. This, in turn, could better inform treatment decisions. The test would, in effect, serve as a “liquid biopsy,” Gupta said.

The study by Gupta and colleagues is published in the peer-reviewed, open-access journal BioMed Research International.

Bladder cancer has been steadily increasing, with little progress in detection and risk stratification. Patients face significant risks of recurrence and progression. Thus, there’s an urgent need to identify biomarkers of bladder cancer and the mechanisms by which bladder cancer progresses.

Exosomes are about 30 to 100 nanometers across. (A nanometer is one billionth of a meter). Exosomes contain proteins and the genetic material messenger RNA and micro RNA. RNA is a marker for genes that get expressed (turned on).

Exosomes are shed by cancer cells. In turn, they are taken up by neighboring cells or by other bladder cancer cells.

Researchers used a novel method called image cytometry to quantify how exosomes are taken up by cells. The study demonstrated how exosomes and their cargo can be transferred between cells. This supports the researchers’ hypothesis that shedding of exosomes from bladder tumors plays a key role in the spread of the cancer.

Characterizing how exosomes are taken up and internalized by bladder cancer cells “could become invaluable for understanding the role of exosomes on bladder cancer recurrence and progression,” the authors wrote.


Story Source:

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


Journal Reference:

  1. Gopal Gupta, MD et al. Characterization of Uptake and Internalization of Exosomes by Bladder Cancer Cells. BioMed Research International, January 2014

Cite This Page:

Loyola University Health System. "Study could aid in development of 'liquid biopsy' screening, diagnostic tests for bladder cancer." ScienceDaily. ScienceDaily, 21 January 2014. <www.sciencedaily.com/releases/2014/01/140121151647.htm>.
Loyola University Health System. (2014, January 21). Study could aid in development of 'liquid biopsy' screening, diagnostic tests for bladder cancer. ScienceDaily. Retrieved September 1, 2014 from www.sciencedaily.com/releases/2014/01/140121151647.htm
Loyola University Health System. "Study could aid in development of 'liquid biopsy' screening, diagnostic tests for bladder cancer." ScienceDaily. www.sciencedaily.com/releases/2014/01/140121151647.htm (accessed September 1, 2014).

Share This




More Health & Medicine News

Monday, September 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

We've Got Mites Living In Our Faces And So Do You

We've Got Mites Living In Our Faces And So Do You

Newsy (Aug. 30, 2014) A new study suggests 100 percent of adult humans (those over 18 years of age) have Demodex mites living in their faces. Video provided by Newsy
Powered by NewsLook.com
Liberia Continues Fight Against Ebola

Liberia Continues Fight Against Ebola

AFP (Aug. 30, 2014) Authorities in Liberia try to stem the spread of the Ebola epidemic by raising awareness and setting up sanitation units for people to wash their hands. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
California Passes 'yes-Means-Yes' Campus Sexual Assault Bill

California Passes 'yes-Means-Yes' Campus Sexual Assault Bill

Reuters - US Online Video (Aug. 30, 2014) California lawmakers pass a bill requiring universities to adopt "affirmative consent" language in their definitions of consensual sex, part of a nationwide drive to curb sexual assault on campuses. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
New Drug Could Reduce Cardiovascular Deaths

New Drug Could Reduce Cardiovascular Deaths

Newsy (Aug. 30, 2014) The new drug from Novartis could reduce cardiovascular deaths by 20 percent compared to other similar drugs. 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