Featured Research

from universities, journals, and other organizations

Sex cells: The sex of individual cells matters

Date:
February 13, 2014
Source:
University of Alabama at Birmingham
Summary:
The idea that sex sells is generally accepted as fact. The idea that the sex of cells is important to biomedical research is not as well-known, but an article suggests that the sex of individual cells matters.

The idea that sex sells is generally accepted as fact. The idea that the sex of cells is important to biomedical research is not as well-known, but an article co-written by a researcher at the University of Alabama at Birmingham, suggests that the sex of individual cells matters.

The sex of a cell is determined by the presence of sex chromosomes: every cell can be categorized as either male or female. The significance of a cell's sex is a concept that has been generally overlooked by the research community, but there is now a growing body of evidence that has some researchers examining important implications."

"Male cells have an X and a Y chromosome, while female cells have two X chromosomes," said Cathy Fuller, Ph.D., associate professor in the Department of Cell, Developmental and Integrative Biology at UAB. "There is now good reason to consider that studies conducted in male cells will produce results different from those of identical studies using female cell lines. This could have a profound effect on fields such as personalized medicine."

This month, Fuller, along with colleague Paul Insel, Ph.D., of the departments of Pharmacology and Medicine at the University of California-San Diego, published an editorial in the American Journal of Physiology-Cell Physiology called "I Don't Know the Question, but Sex is Definitely the Answer!" The editorial comes on the heels of a 2012 decision by the American Physiology Society to require authors to report the sex of the cells lines, biological materials and animals used in their experiments.

Fuller and Insel looked at two articles published in AJP-Cell and one in Nature that laid out the reasons that the APS decision to disclose the sex of cell lines was essential. They wrote that the lessons learned from these articles suggest the APS policy could have an important effect on patient care.

"We have assumed that cells bearing an XY genotype behave the same as cells that are XX, but we don't really know if that is correct," said Fuller. "Do T-84 cells, derived from a male colon cancer patient, behave the same as Ht-29 colon cancer cells, derived from a female? And will a colon cancer drug tested in one cell line work in the same fashion in all patients?"

An additional complication, according to Fuller, is that many cell lines frequently used in research are old -- some have been around for more than 50 years -- and some supposedly male lines have lost the Y chromosome through the many repetitive cell culture cycles.

"As we move closer to the concept of personalized medicine, where drugs and therapies can be tailored for the individual patient, we will need a more complete understanding of the physiology of that patient down to the cellular level," Fuller said. "A drug that was tested in a cell line without a Y chromosome might not work as well in a patient who does have Y chromosomes. This could help explain why certain drugs work better in some patients than in others." Fuller says investigators working on developing drugs such as small molecules and biologics will need to consider that sex differences may underlie differences in responsiveness of different cells used in high-throughput screens, as well as considering the sex of the patient group to whom the drugs are targeted. Sex differences will be particularly important in stem cell-based therapies, such that the sex of both the donor and the recipient should be considered. She also suspects that other scientific journals will follow suit and require investigators to identify the sex of their cell lines.

The good news is that the sex of many of the major cell lines currently in use is known and that information is available to researchers.


Story Source:

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


Journal Reference:

  1. C. M. Fuller, P. A. Insel. I don't know the question, but sex is definitely the answer! Focus on "In pursuit of scientific excellence: sex matters" and "Do you know the sex of your cells?". AJP: Cell Physiology, 2013; 306 (1): C1 DOI: 10.1152/ajpcell.00342.2013

Cite This Page:

University of Alabama at Birmingham. "Sex cells: The sex of individual cells matters." ScienceDaily. ScienceDaily, 13 February 2014. <www.sciencedaily.com/releases/2014/02/140213141954.htm>.
University of Alabama at Birmingham. (2014, February 13). Sex cells: The sex of individual cells matters. ScienceDaily. Retrieved April 24, 2014 from www.sciencedaily.com/releases/2014/02/140213141954.htm
University of Alabama at Birmingham. "Sex cells: The sex of individual cells matters." ScienceDaily. www.sciencedaily.com/releases/2014/02/140213141954.htm (accessed April 24, 2014).

Share This



More Health & Medicine News

Thursday, April 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deadly Fungus Killing Bats, Spreading in US

Deadly Fungus Killing Bats, Spreading in US

AP (Apr. 24, 2014) A disease that has killed more than six million cave-dwelling bats in the United States is on the move and wildlife biologists are worried. White Nose Syndrome, discovered in New York in 2006, has now spread to 25 states. (April 24) Video provided by AP
Powered by NewsLook.com
Companies Ramp Up Wellness to Lower Health Costs

Companies Ramp Up Wellness to Lower Health Costs

AP (Apr. 24, 2014) That little voice telling you to exercise, get in shape and get healthy is probably coming from your boss. More companies are beefing up wellness programs to try and cut down their health care costs. (April 24) Video provided by AP
Powered by NewsLook.com
Blood From World's Oldest Woman Suggests Life Limit

Blood From World's Oldest Woman Suggests Life Limit

Newsy (Apr. 24, 2014) Scientists say for the extremely elderly, their stem cells might reach a state of exhaustion. This could limit one's life span. Video provided by Newsy
Powered by NewsLook.com
FDA Wants To Ban Sales Of E-Cigarettes To Minors

FDA Wants To Ban Sales Of E-Cigarettes To Minors

Newsy (Apr. 24, 2014) The Food and Drug Administration wants to crack down on the use of e-cigarettes, banning the sale of the product to minors. 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