Subscribe free to our newsletters via your
. 24/7 Space News .

Moss may hold stem cell programming clues
by Staff Writers
Tel Aviv, Israel (UPI) Sep 30, 2009

disclaimer: image is for illustration purposes only

Israeli and German scientists say they've discovered moss might provide information allowing researchers to better program stem cells for medical purposes.

Nir Ohad of Tel Aviv University and Professor Ralf Reski of the University of Freiburg said they discovered a new use for the polycomb group proteins found in moss. They said they determined the proteins play an important role in telling stem cells how to develop.

"We may not have found the switch that turns stem cells into tissue," Ohad said, "but we have found a key component which makes this switch work."

The scientists describe an ancient mechanism that alters the way DNA organizes inside a cell nucleus, which in turn, affects gene expression. That finding, they said, has important implications in stem cell therapies, which can go awry if implanted stem cells aren't reprogrammed properly.

The researchers suggest the basic function of the polycomb group proteins in moss is in regulating cell differentiation, describing the point at which a stem cell "decides" to become a leaf or flower, for example.

"As they develop, stem cells go from having a non-defined function to a specific one," Ohad said. "If you don't know how to manipulate the type of tissue you want to modulate, replace or heal, you might cause the malfunction of another type of tissue."

The study was reported recently in the journal Development.


Related Links
The Clone Age - Cloning, Stem Cells, Space Medicine

Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks DiggDigg RedditReddit GoogleGoogle

Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

In world first, Chinese researchers create pig stem cells
Paris (AFP) June 3, 2009
Chinese researchers said on Wednesday they had created versatile stem cells from pigs, a ground-breaking achievement that could open up new paths for combatting human disease. Doctors led by Lei Xiao, of the Shanghai Institute of Biochemistry and Cell Biology, took adult cells taken from a pig's ear and bone marrow and reprogrammed them so that they became so-called pluripotent stem cells. ... read more

China says completes 3D moon map

SMART-1 Mapped Crash Scene Of Upcoming LCROSS Impact

Key Process For Space Outpost Proved On 'Vomit Comet' Ride

NASA Goddard Shoots The Moon To Track LRO

Opportunity Passes 11 Mile Mark

Spirit Makes Progress On Antenna Actuator

Iceberg Chasing And Laser Lights

Radar Map Of Buried Mars Layers Matches Climate Cycles

Clown takes giant leap into space

Russia Sends Circus Man Into Space

Russia's Last Analogue Space Freighter Buried In Pacific

Cirque du Soleil founder reaches for the stars

China to build, launch satellite for Laos

China says will push space programme to catch up West

China Begins New Space Center Construction

China breaks ground on new space launch centre: state media

Russia To Launch Orbital Lab "Oka-T" In 2015

Light-Duty Day For Crew, Expedition 21 Prepares For Launch

ESA Calls For Ideas For Climate Change Studies From ISS

Progress M-67 Undocks From ISS

Arianespace Maintains Record Launch Rate

Space Systems/Loral Delivers SES World Skies Satellite To Launch Base

NSS-12 Satellite Arrives At Kourou

Delta II NASA Launch For MDA Successful

Simulation Suggests Rocky Exoplanet Has Bizarre Atmosphere

NASA's Spitzer Spots Clump Of Swirling Planetary Material

Spitzer Spots Clump Of Swirling Planetary Material

Mass And Density Of Smallest Exoplanet Finally Measured

ORMatE Returns To NRL After Nearly Two Years In Earth Orbit

Space Debris Gets Some Respect

IKONOS Satellite Marks 10 Years In Operations

NASA works on space age coating

The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement