HOME >> BIOLOGY >> NEWS
The origin of the brain lies in a worm

The rise of the central nervous system (CNS) in animal evolution has puzzled scientists for centuries. Vertebrates, insects and worms evolved from the same ancestor, but their CNSs are different and were thought to have evolved only after their lineages had split during evolution. Researchers from the European Molecular Biology Laboratory (EMBL) in Heidelberg now reveal that the vertebrate nervous system is probably much older than expected. The study, which is published in the current issue of Cell, suggests that the last common ancestor of vertebrates, insects and worms already had a centralised nervous system resembling that of vertebrates today.

Many animals have evolved complex nervous systems throughout the course of evolution, but their architectures can differ substantially between species. While vertebrates have a CNS in the shape of a spinal cord running along their backs, insects and annelid worms like the earthworm have a rope-ladder-like chain of nerve cell clusters on their belly side. Other invertebrates on the other hand have their nerve cells distributed diffusely over their body. Yet, all these species descend from a common ancestor called Urbilateria. If this ancestor already possessed a nervous system, what it might have looked like and how it gave rise to the diversity of nervous systems seen in animals today is what Detlev Arendt and his group study at EMBL. To do so, they investigate the nervous system of a marine annelid worm called Platynereis dumerilii.

"Platynereis can be considered a living fossil," says Arendt, "it still lives in the same environment as the last common ancestors used to and has preserved many ancestral features, including a prototype invertebrate CNS."

Arendt and his group investigated how the developing CNS in Platynereis embryos gets subdivided into the regions that later on give rise to the different CNS structures. The regions are defined by the unique combination of regulatory genes expressed, whi
'"/>

Contact: Anna-Lynn Wegener
wegener@embl.de
49-622-138-7452
European Molecular Biology Laboratory
20-Apr-2007


Page: 1 2

Related biology news :

1. Discredited Korean embryonic stem cells true origins revealed
2. New research proves single origin of humans in Africa
3. The origin of perennial water-ice at the South Pole of Mars
4. Surprising origin of cells internal highways
5. Nobel scientists Craig Mello and John Mather to speak on origins of life and universe
6. Inflammation is at the origin and progression of diseases such as diabetes or cancer
7. Smithsonian scientists connect climate change, origins of agriculture in Mexico
8. Pediatric cancer stem cell identified: understanding the origin of ERMS
9. Spud origin controversy solved
10. Could USA presidential DNA trail reveal Middle-Eastern origins?
11. NYUCD study links tooth decay and gum infections to ethnicity and country of origin

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: The origin the brain lies worm

(Date:6/24/2015)... 24, 2015  Synaptics Inc. (NASDAQ: SYNA ... today announced that Sharp has selected its industry-leading ... for its latest flagship smartphone device, the AQUOS ... million shipments of its fingerprint ID sensor technology, ... scalability and leadership in the biometrics market through ...
(Date:6/23/2015)... 2015   Valencell, a leader in ... a recent study that illustrates its PerformTek biometric ... activity. In a study conducted at Valencell,s Biometric ... the Apple Watch against a chest strap – ... activity. The study demonstrated that Valencell,s biometric technology ...
(Date:6/17/2015)... and HILDEN, Germany , June 17, 2015 ... Frankfurt Prime Standard: QIA) today launched new Investigator ® ... laboratories in the United States . The ... analyze multiple key genomic markers (short tandem repeats or STRs) ... Sensor to evaluate the quality of DNA in each sample, ...
Breaking Biology News(10 mins):Synaptics Brings Natural ID Technology to Sharp's Newest Flagship Smartphone 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 3QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 2QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 3QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 4QIAGEN Launches New Genetic Fingerprinting Kits for U.S. Forensic Labs 5
(Date:7/3/2015)... , July 3, 2015 /PRNewswire/ ... hakea verkossa osoitteessa  http://www.openinnovationinscience.at ... Innovation in Science" -jatkokoulutusohjelmaan 22.7.2015 ... Gesellschaftin (LBG) tekemän, kansainvälisiä tutkijoita ... terveystieteiden kaksi suurinta haastetta ovat ...
(Date:7/3/2015)... NEW YORK , July 3, 2015  Pomerantz ... filed against Puma Biotechnology, Inc. ("Puma" or the "Company")(NYSE: ... class action, filed in United States District Court, Central ... under 15-cv-00865, is on behalf of a class consisting ... between July 23, 2014 and May 13, 2015 inclusive ...
(Date:7/2/2015)... GLASGOW, Scotland , July 2, 2015 ...   Bio-tech procurement company Amici Procurement has ... IOM) to help it move to Office 365. ... Procurement provides small to medium-sized companies in the ... with all aspects of the purchasing cycle to help ...
(Date:7/1/2015)... , July 1, 2015   Decision ... frequently cited advantages of Otezla are its oral ... profile, as reported by surveyed rheumatologists. Otezla was ... for the treatment of active psoriatic arthritis in ... current standard of care includes conventional oral treatments ...
Breaking Biology Technology:Maailman ensimmäinen tiedemiesten koulutukseen suunniteltu avoimen innovaation ohjelma käynnistyy 2Maailman ensimmäinen tiedemiesten koulutukseen suunniteltu avoimen innovaation ohjelma käynnistyy 3SHAREHOLDER ALERT: Pomerantz Law Firm Reminds Shareholders with Losses on their Investment in Puma Biotechnology, Inc. of Class Action Lawsuit and Upcoming Deadline - PBYI 2SHAREHOLDER ALERT: Pomerantz Law Firm Reminds Shareholders with Losses on their Investment in Puma Biotechnology, Inc. of Class Action Lawsuit and Upcoming Deadline - PBYI 3SHAREHOLDER ALERT: Pomerantz Law Firm Reminds Shareholders with Losses on their Investment in Puma Biotechnology, Inc. of Class Action Lawsuit and Upcoming Deadline - PBYI 4Biotech Procurement Company Moves to Office 365 with iomart 2Surveyed Rheumatologists Report That Otezla's Oral Administration is its Single Greatest Advantage Over Currently Available Treatment Options 2Surveyed Rheumatologists Report That Otezla's Oral Administration is its Single Greatest Advantage Over Currently Available Treatment Options 3
Cached News: