Navigation Links
MicroRNA gene that regulates lifespan found by Yale scientists

Genes that control the timing of organ formation during development also control timing of aging and death, and provide evidence of a biological timing mechanism for aging, Yale researchers report in the journal Science.

"Although there is a large variation in lifespan from species to species, there are genetic aspects to the processes of development and aging," said Frank Slack, associate professor of Molecular, Cellular and Developmental Biology and senior author of the paper. "We used the simple, but genetically well-studied, C. elegans worm and found genes that are directly involved in determination of lifespan. Humans have genes that are nearly identical."

A microRNA and the developmental-timing gene it controls, lin-4 and lin-14, affect patterns of cellular development at very specific stages. Slack's group found that mutations in these genes alter both the timing of the worm development stages-- and the worm lifespan.

C. elegans has been the premier model organism for studying the genetics of aging, and an excellent predictor of genes that also control mammalian aging.

To test their functions, they made mutants in both of these genes. Animals with a loss-of-function mutation in lin-4 had a lifespan that was significantly shorter than normal, suggesting that lin-4 prevents premature death. Conversely, over-expressing lin-4 led to a longer lifespan. They also found that a loss–of-function mutation in lin-14, the target of lin-4, caused the opposite effect -- a 31 percent longer lifespan.

According to Slack, their results are strong evidence of an "intrinsic biological clock" that runs for aging as well as for normal organ development. Included results showed the developmental programs that these genes regulate are modulated through insulin signaling, demonstrating the connection between insulin-driven metabolism and aging.

"This mic
'"/>

Source:Yale University


Page: 1 2

Related biology news :

1. Yale Scientists Find MicroRNA Regulates Ras Cancer Gene
2. Cooperation is key—a new way of looking at MicroRNA and how it controls gene expression
3. MicroRNAs play a big part in gene regulation - and evolution
4. MicroRNA tweaks protein that controls early heart development
5. MicroRNAs have shaped the evolution of the majority of mammalian genes
6. MicroRNA may have fail-safe role in limb development
7. MicroRNAs can be tumor suppressors
8. MicroRNA helps prevent tumors
9. MicroRNAs as tumor suppressors
10. Multi-purpose protein regulates new protein synthesis and immune cell development
11. Scientists identify molecule that regulates well-known tumor suppressor
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: MicroRNA gene that regulates lifespan found Yale scientists

(Date:10/29/2014)... been blamed for increasing the risk of a ... history of schizophrenia, are widely accepted. Others, such ... parasite transmitted by soil, undercooked meat and cat ... new study by Gary Smith, professor of population ... School of Veterinary Medicine, used epidemiological modeling methods ...
(Date:10/29/2014)... York City on September 19, 2014, leading geneticist and ... of Genome Sciences and Medicine at the University of ... of Tel Aviv University, was awarded the 2014 Lasker-Koshland ... to her honorary degree from TAU, Prof. King was ... Medicine, and for the past 18 years she has ...
(Date:10/29/2014)... An innovative workflow reveals new research potential of the ... recently published article in the Biodiversity Data ... BOLD in tabular format and imported these into a ... Writting Tool (PWT). Data were used to study ... wasps from the Microgastrinae subfamily. , BOLD is originally ...
Breaking Biology News(10 mins):Penn vet professor investigates parasite-schizophrenia connection 2Penn vet professor investigates parasite-schizophrenia connection 3Geneticist and humanitarian: Prof. Mary-Claire King receives Lasker Award 2Go straight and publish: From Barcode of Life Data Systems to scholarly publishing systems 2
... latest-generation DNA sequencing technology to become the first explorers ... "This project is one of the first attempts to ... than a single organism," says Nicole Gerardo, assistant professor ... we can understand how these ants have evolved to ...
... the Centers for Disease Control and Prevention (CDC) found ... by age of menarche and total number of lifetime ... over the course of a woman,s lifetime may influence ... this study are published in Cancer Epidemiology, Biomarkers ...
... We see the face of the Virgin Mary staring up ... portion of our meal for $37,000 on eBay. We believe in ... science offers a wealth of rational explanations for natural phenomena, we ... And we,ll even go to war to protect our delusions against ...
Cached Biology News:Landmark project to map genomics of complex ant systems 22 reproductive factors are important predictors of death from ovarian cancer 22 reproductive factors are important predictors of death from ovarian cancer 3Our 'caveman logic' embraces ESP over evolution 2
(Date:10/30/2014)... Oct. 30, 2014  Ardelyx, Inc. (NASDAQ: ... on cardio-renal, gastrointestinal and metabolic diseases, today announced ... results on Thursday, November 6, 2014. Following the ... live conference call and webcast at 4:30pm ET ... a business update. The live webcast ...
(Date:10/30/2014)... On October 26th at the Mid ... leading applied stem cell research scientist Neil Riordan, ... talks on New Techniques for Enhancing Stem Cell ... Cells. , Dr. Riordan focused on historical medical ... AlphaGEMS that include: wound healing; inflammation and pain ...
(Date:10/30/2014)... 30, 2014 James Sherley says he has ... tissue stem cell technology since his days as a principal ... in the late 1990’s. Sherley founded the ASCTC as ... holds all the intellectual property developed in Sherley’s research over ... Massachusetts Institute of Technology (MIT), and more recently as a ...
(Date:10/30/2014)... 30, 2014 Avure Technologies celebrates a year ... newest member of its fleet of high volume High Pressure ... anniversary as we return to PackExpo this year, which is ... Las Vegas,” said Jeff Williams, CEO at Avure. “Sales of ... pleased to be meeting the challenges of market demand for ...
Breaking Biology Technology:Ardelyx to Report Third Quarter 2014 Financial Results on November 6, 2014 2Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 2Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 3Riordan-McKenna Institute Founders, Neil Riordan, PhD and Orthopedic Surgeon, Dr. Wade McKenna Present at the Mid American Regenerative and Cellular Medicine Showcase 4Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 2Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 4In High Demand: New High Pressure Processing (HPP) System with Maximum Throughput Drives Strong Sales 2In High Demand: New High Pressure Processing (HPP) System with Maximum Throughput Drives Strong Sales 3
... VEGAS, Oct. 21 Altogen Biosystems announced the release ... reagent ( http://www.altogen.com/mirna.php ) in the company,s popular in ... Kit. This reagent is also compatible for in vivo ... and small proteins. The company also offers custom encapsulation ...
... Mass., Oct. 21 Sermo ( http://www.sermo.com ), the ... Sermo Report titled, " Physician Participation in the ESA ... participation rates in the FDA-required Erythropoiesis-Stimulating Agents (ESAs) risk ... to the results, 83% of Hematologists/Oncologists view the ESA ...
... Oct. 21 Cord Blood America, Inc . ( ... umbilical cord blood stem cell preservation company focused ... nationwide and internationally, is pleased to announce that Chairman, CEO ... Operations, will appear for one hour live on "Go Rogue ...
Cached Biology Technology:PEG-Liposome siRNA In Vivo Transfection Kit From Altogen Biosystems 2Sermo Report Indicates Possible Decline in Prescribing of Erythropoiesis-Stimulating Agents 2Cord Blood America Management Team to Appear on National VoiceAmerica Radio Network 2
This issue concentrated on the purification of proteins for specific purposes (i.e. large-scale purification, purification for therapeutic use, etc.)...
... Dunbar (1994) • This book describes ... methods for preparing samples for protein ... radiometric and bioluminescence-enhanced detection systems are ... the detection and characterization of glycoprotein ...
All serum is collected from U.S.D.A. fryers and broilers. Pricing: $15/unit for 1 - 10 units; $12/unit for 11 - 50 units...
Human HAPLN1 MAb (Clone 316119) Protein Family: Hyaluronan (HA) & HA Binding Proteins, Proteoglycan Regulators...
Biology Products: