Navigation Links
Sensing the light, but not to see
Date:2/6/2013

WOODS HOLE, MASS. -- Among the animals that are appealing "cover models" for scientific journals, lancelets don't spring readily to mind. Slender, limbless, primitive blobs that look pretty much the same end to end, lancelets "are extremely boring. I wouldn't recommend them for a home aquarium," says Enrico Nasi, adjunct senior scientist at the Marine Biological Laboratory (MBL). Yet Nasi and his collaborators managed to land a lancelet on the cover of the Journal of Neuroscience last December. These simple chordates, they discovered, offer insight into our own biological clocks.

Nasi and his wife, MBL adjunct scientist Maria del Pilar Gomez, are interested in phototransduction, the conversion of light by light-sensitive cells into electrical signals that are sent to the brain. The lancelet, also called amphioxus, doesn't have eyes or a true brain. But what it does have in surprising abundance is melanopsin, a photopigment that is also produced by the third class of light-sensitive cells in the mammalian retina, besides the rods and cones. This third class of cells, called "intrinsically photosensitive retinal ganglion cells" (ipRGCs), were discovered in 2002 by Brown University's David Berson and colleagues. Now sometimes called "circadian receptors," they are involved in non-visual, light-dependent functions, such as adjustment of the animal's circadian rhythms.

"It seemed like colossal overkill that amphioxus have melanopsin-producing cells," Nasi says. "These animals do nothing. If you switch on a light, they dance and float to the top of the tank, and then they drop back down to the bottom. That's it for the day." But that mystery aside, Gomez and Nasi realized that studying amphioxus could help reveal the evolutionary history of the circadian receptors.

As so it has. In 2009, Gomez and Nasi isolated the animal's melanopsin-producing cells and described how they transduce light. In their recent paper, they tackled the p
'/>"/>

Contact: Diana Kenney
dkenney@mbl.edu
508-289-7139
Marine Biological Laboratory
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Engineers use droplet microfluidics to create glucose-sensing microbeads
2. First evidence of fish sensing geomagnetic fields from a Czech Christmas market
3. Nutrient-sensing enzymes key to starvation response and survival in newborn mammals
4. Eddies, not sunlight, spur annual bloom of tiny plants in North Atlantic
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Sensing the light, but not to see
(Date:12/11/2014)... 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/twhjll/biometrics_market ) has announced the addition ... Region 2015-2019"  report to their offering. ... is advances in technology. With continuous advances in ... to the latest standard that meets the needs ...
(Date:12/10/2014)... , Dec. 9, 2014  Valencell, a leader in ... seeing a staggering demand from its licensees for highly ... revealed, is not solely coming from fitness and health ... "A wearable is only as useful as ... is the ultimate driver in long-term mass consumer adoption ...
(Date:12/5/2014)... MOUNTAIN VIEW, Calif. , Dec. 4, 2014 ... and safety has boosted investments in new testing ... products has also given rise to a range ... driven by the requirements of Generation Y, which ... digital technologies. As a result, product development strategies ...
Breaking Biology News(10 mins):Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Wearable Technology Products Demand Highly Accurate Biometric Technology 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4
... limnologist, or lake scientist, John Downing finds that ponds around ... oceans. Professor Downing found that constructed ponds and ... a much higher rate than expected; as much as 20-50 ... ponds were found to take up carbon at a higher ...
... to Feature New Version of PocketCop Software, ... Bulletin Board: BKYI), a leader in finger-based biometric,identification ... will be showcasing its latest mobile data solution ... Information Management,(LEIM) Conference, to be held May 7-9 ...
... Spearhead Effort in Support of "New Employee,Verification Act", ... largest,association devoted to human resource management today led ... endorse the "New Employee,Verification Act." In testimony today ... Security, Sue Meisinger, President and CEO of SHRM,urged ...
Cached Biology News:Ponds found to take up carbon like world's oceans 2BIO-key(R) Showcasing Public Safety Solutions for BlackBerry Smartphones at 2008 LEIM Conference 2BIO-key(R) Showcasing Public Safety Solutions for BlackBerry Smartphones at 2008 LEIM Conference 3SHRM CEO Testifies Before House Subcommittee on Social Security 2SHRM CEO Testifies Before House Subcommittee on Social Security 3
(Date:12/22/2014)... , Dec. 22, 2014  Alternative Energy & ... it has signed a letter of intent to ... developed and patented a nanotechnology-based development platform used ... that enable rapid on-site collection and testing to ... health issues in an immediate, non-invasive and cost-effective ...
(Date:12/22/2014)... 22, 2014 ITRA Global, one of ... of commercial real estate, has further expanded its global ... Perth and Brisbane, Western Australia, reports Mylinda Vick, CCIM, ... ITRA Global / ACORPP (Australian Corporate Property and ... company providing property services to a wide range of ...
(Date:12/19/2014)... BioPlus Specialty Pharmacy (BioPlus), one of the ... Maroulis, Pharm.D. to the newly created position of Vice ... position, Dr. Maroulis will continue to manage the entire ... multi-site pharmacies as the company expands. Dr. Maroulis has ... he has served in many different capacities in the ...
(Date:12/19/2014)... BURLINGTON, Mass. , Dec. 19, 2014 ... biomaterial market will grow at a 12 percent compound ... a result of the aging population and the increasing ... Latin America will also spur demand ... results of dental implant and periodontal treatments. ...
Breaking Biology Technology:ALNE Announces Intention To Acquire BioTechPharma 2ITRA Global Continues International Expansion in Perth and Brisbane, Australia 2BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 2Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 3
... Biotech Inc. (TSX:,ONC, NASDAQ: ONCY) ("Oncolytics") today announced ... "Reovirus for the Treatment of Neoplasia.",The claims describe ... that,have inactivated PKR, whether the PKR is inactivated ... is a host cellular protein responsible for preventing,virus ...
... Geffen School of Medicine at UCLA and the Howard ... largest cellular particle ever crystallized, suggesting ways to engineer ... The research study, which focuses on new engineered nanomaterial ... the Nov. 27 edition of the peer-reviewed, open-access journal ...
... Largest Ophthalmology Practice Will Assess for Diabetic ... Retinopathy, a Leading Cause of Blindness, WAKE FOREST, ... specializing in retinal risk assessment for diabetics,announced today that Cincinnati ... the Retasure retinal imaging system., CEI is the largest ...
Cached Biology Technology:Oncolytics Biotech Inc. Announces Issuance of 24th U.S. Patent 2Researchers outline structure of largest nonvirus particle ever crystallized 2Digital Healthcare Announces Cincinnati Eye Institute is Latest Retasure Reading Center 2
... Immunodetection Kits are designed for ultra-sensitive ... nitrocellulose or PVDF membranes. Since all ... and primary antibodies), the WesternBreeze Kits ... your protocol and getting your final ...
Immunogen: Synthetic peptide: S(399) P W S E L E F Q F P D D K D P V W E F(418) Storage: -20 C, Avoid Freeze/Thaw Cycles...
Human ABCG2 MAb (Clone 5D3)...
Borosilicate Glass. Certified for use with the Beacon 2000 Systems, 1,000 tubes/case...
Biology Products: