Navigation Links
Carnegie Mellon scientists create PNA molecule with potential to build nanodevices

No matter how healthy a life one leads, no person has managed to live much longer than a century. Even though the advances of the modern age may have extended the average human life span, it is clear there are genetic limits to longevity. One prominent theory of aging lays the blame on the accumulation of damage done to DNA and proteins by “free radicals,?highly reactive molecules produced by the metabolic activity of mitochondria.

This damage is expected to reduce gene expression by damaging the DNA in which genes are encoded, and so the theory predicts that the most metabolically active tissues should show the greatest age-related reduction in gene expression. In this issue, Michael Eisen and colleagues show that the human brain follows this pattern. A similar pattern—which, surprisingly, involves different genes—is found in the brain of the aging chimpanzee.

The authors compared results from three separate studies of age-related gene expression, each done on the same type of DNA microarray and each comparing brain regions in young versus old adult humans. In four different regions of the cortex (the brain region responsible for higher functions such as thinking), they found a similar pattern of age-related change, characterized by changes in expression of hundreds of genes. In contrast, expression in one non-cortical region, the cerebellum (whose principal functions include movement), was largely unchanged with age. In addition to confirming a prediction of the free-radical theory of aging (namely, that the more metabolically active cortex should have a greater reduction in gene activity), this is the first demonstration that age-related gene expression patterns can differ in different cells of a single organism.

The authors found a similar difference in age-related patterns in the brain of the chimpanzee, with many genes down-regulated in the cortex that remained unchanged in the cerebellum. However, the set of affected cortical genes was
'"/>

Source:


Page: 1 2

Related biology news :

1. Carnegie Mellon scientists develop tool that uses MRI to visualize gene expression in living animals
2. Robot-based system developed at Carnegie Mellon detects life in Chiles Atacama desert
3. Green catalyst destroys pesticides and munitions toxins, finds Carnegie Mellon University
4. Carnegie Mellon University research reveals how cells process large genes
5. Carnegie Mellon cyLab researchers work to develop new red tide monitoring
6. Team led by Carnegie Mellon University scientist finds first evidence of a living memory trace
7. Carnegie Mellon U. transforms DNA microarrays with standard Internet communications tool
8. Carnegie Mellon develops non-invasive technique to detect transplant rejection at cellular level
9. Carnegie Mellon scientists show brain uses optimal code for sound
10. DNA conclusive yet still controversial, Carnegie Mellon professor says
11. Teens unaware of sexually transmitted diseases until they catch one, Carnegie Mellon study finds
Post Your Comments:
(Date:6/23/2015)... BEACH GARDENS, Fla. , June 23, ... multi-factor identity management and authentication solutions, today announced ... Altus strong, multi-factor authentication solution.  The enhancements ... of use of the DigitalPersona Altus platform ... biometric reader compatibility. In today,s ...
(Date:6/18/2015)... June 18, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... on the growing mobile commerce market announces that its Wocket® ... on "Money on the Mark", scheduled to air on WABC ... June 20 th . The broadcast air- ... 7:00 to 8:00pm EST. NXT-ID, Inc.,s CEO Gino Pereira ...
(Date:6/17/2015)... Germany , June 17, 2015 ... QIA) today launched new Investigator ® STR assay kits ... the United States . The new genetic fingerprint ... genomic markers (short tandem repeats or STRs) for DNA matching. ... the quality of DNA in each sample, a novel QIAGEN ...
Breaking Biology News(10 mins):Crossmatch Releases Enhanced DigitalPersona Altus Advanced Authentication Functionality 2NXT-ID, Inc.'s CEO Gino Pereira Talks About the Wocket Smart Wallet on WABC Radio, New York City, June 20th 2NXT-ID, Inc.'s CEO Gino Pereira Talks About the Wocket Smart Wallet on WABC Radio, New York City, June 20th 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
... open farmland, wooded "shade" plantations that produce coffee and chocolate ... study says forests remain the best habitat for tropical birds. ... and "agroforests" where crops are grown under trees ... of various types of birds may hurt "ecosystem services" that ...
... estimates, a third of Earth,s organisms live in our planet,s ... mystery. This week, the work of microbiologist James Holden ... into this dark world. In the journal Proceedings ... the first detailed data on methane-exhaling microbes that live deep ...
... of Nursing,s (NYUCN) Joyce K. Anastasi, PhD, DrNP, FAAN, ... of the Division of Special Studies in Symptom Management ... National Institutes of Health (NIH) grant for the study ... The primary aim of the study ...
Cached Biology News:Birds do better in 'agroforests' than on farms 2Birds do better in 'agroforests' than on farms 3Birds do better in 'agroforests' than on farms 4Birds do better in 'agroforests' than on farms 5Scientists define new limits of microbial life in undersea volcanoes 2Scientists define new limits of microbial life in undersea volcanoes 3NYU College of Nursing's Dr. Anastasi awarded $2.5 million from NIH to study IBS symptom management 2
(Date:7/6/2015)... ANGELES , July 6, 2015 ImmunoCellular ... establishment of an agreement with Novella Clinical ... ICT-107 in patients with newly diagnosed glioblastoma. Novella is ... trial services to small to mid-sized oncology companies. The ... sites in the US, Europe ...
(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)... 3, 2015 Forskare ... 2015 på  http://www.openinnovationinscience.at till det återkommande ... som hålls i Wien ... med internationella forskare och vetenskapsmän som genomfördes ... två största utmaningar bristen på incitament för ...
(Date:7/3/2015)... , July 3, 2015 ... 22. september 2015 på  http://www.openinnovationinscience.at om ... der finder sted i Wien ... undersøgelse af internationale forskere og videnskabsmænd foretaget ... to største udfordringer for sundhedsvidenskaben manglen på ...
Breaking Biology Technology:ImmunoCellular Therapeutics Establishes Agreement with Novella Clinical to Conduct ICT-107 Phase 3 Registration Trial in Glioblastoma 2Maailman ensimmäinen tiedemiesten koulutukseen suunniteltu avoimen innovaation ohjelma käynnistyy 2Maailman ensimmäinen tiedemiesten koulutukseen suunniteltu avoimen innovaation ohjelma käynnistyy 3Lansering av världens första program för öppen innovation för att utbilda forskare 2Lansering av världens första program för öppen innovation för att utbilda forskare 3Lancering af verdens første åbne innovationsprogram til uddannelse af forskere 2Lancering af verdens første åbne innovationsprogram til uddannelse af forskere 3
... so-called quantum point contact (QPC). This is a narrow ... a 70-nanometer narrow channel, about as wide as the ... that only one electron at a time will fit ... the electric current. As described in the current publication, ...
... Technologies, LLC has been awarded a Phase I Small ... National Institute on Aging. The project is focused on ... tissue (fat) that are regulated by a calorie ... Operations at LifeGen, the technology developed under the ...
... ST. LOUIS, Oct. 21 HIGHLIGHTS:   ... in 2009) Q3 2010 reported sales increased ... sales grew organically by 7%.  Reported sales growth for SAFC (Fine ... growth for SAFC and Research Products increased 14% and 5%, respectively. ...
Cached Biology Technology:LifeGen Technologies Awarded NIH Grant to Identify Biomarkers of a Calorie Restricted Diet in Adipose Tissue 2Sigma-Aldrich (Nasdaq: SIAL) Reports Q3 2010 Diluted EPS of $0.76. Diluted EPS Increased by 9% and 19% on a Reported and Adjusted Basis, Respectively. Q3 Sales Performance Remains Strong; Full Year 2010 Diluted Adjusted EPS Outlook Raised to $3.20 - 2Sigma-Aldrich (Nasdaq: SIAL) Reports Q3 2010 Diluted EPS of $0.76. Diluted EPS Increased by 9% and 19% on a Reported and Adjusted Basis, Respectively. Q3 Sales Performance Remains Strong; Full Year 2010 Diluted Adjusted EPS Outlook Raised to $3.20 - 3Sigma-Aldrich (Nasdaq: SIAL) Reports Q3 2010 Diluted EPS of $0.76. Diluted EPS Increased by 9% and 19% on a Reported and Adjusted Basis, Respectively. Q3 Sales Performance Remains Strong; Full Year 2010 Diluted Adjusted EPS Outlook Raised to $3.20 - 4Sigma-Aldrich (Nasdaq: SIAL) Reports Q3 2010 Diluted EPS of $0.76. Diluted EPS Increased by 9% and 19% on a Reported and Adjusted Basis, Respectively. Q3 Sales Performance Remains Strong; Full Year 2010 Diluted Adjusted EPS Outlook Raised to $3.20 - 5Sigma-Aldrich (Nasdaq: SIAL) Reports Q3 2010 Diluted EPS of $0.76. Diluted EPS Increased by 9% and 19% on a Reported and Adjusted Basis, Respectively. Q3 Sales Performance Remains Strong; Full Year 2010 Diluted Adjusted EPS Outlook Raised to $3.20 - 6Sigma-Aldrich (Nasdaq: SIAL) Reports Q3 2010 Diluted EPS of $0.76. Diluted EPS Increased by 9% and 19% on a Reported and Adjusted Basis, Respectively. Q3 Sales Performance Remains Strong; Full Year 2010 Diluted Adjusted EPS Outlook Raised to $3.20 - 7Sigma-Aldrich (Nasdaq: SIAL) Reports Q3 2010 Diluted EPS of $0.76. Diluted EPS Increased by 9% and 19% on a Reported and Adjusted Basis, Respectively. Q3 Sales Performance Remains Strong; Full Year 2010 Diluted Adjusted EPS Outlook Raised to $3.20 - 8Sigma-Aldrich (Nasdaq: SIAL) Reports Q3 2010 Diluted EPS of $0.76. Diluted EPS Increased by 9% and 19% on a Reported and Adjusted Basis, Respectively. Q3 Sales Performance Remains Strong; Full Year 2010 Diluted Adjusted EPS Outlook Raised to $3.20 - 9Sigma-Aldrich (Nasdaq: SIAL) Reports Q3 2010 Diluted EPS of $0.76. Diluted EPS Increased by 9% and 19% on a Reported and Adjusted Basis, Respectively. Q3 Sales Performance Remains Strong; Full Year 2010 Diluted Adjusted EPS Outlook Raised to $3.20 - 10Sigma-Aldrich (Nasdaq: SIAL) Reports Q3 2010 Diluted EPS of $0.76. Diluted EPS Increased by 9% and 19% on a Reported and Adjusted Basis, Respectively. Q3 Sales Performance Remains Strong; Full Year 2010 Diluted Adjusted EPS Outlook Raised to $3.20 - 11Sigma-Aldrich (Nasdaq: SIAL) Reports Q3 2010 Diluted EPS of $0.76. Diluted EPS Increased by 9% and 19% on a Reported and Adjusted Basis, Respectively. Q3 Sales Performance Remains Strong; Full Year 2010 Diluted Adjusted EPS Outlook Raised to $3.20 - 12
Quinolinate phosphoribosyltransferase...
ICC Diluent Buffer 250 ml...
This antibody is specific for human J-chain as defined by ELISA assay using purified human immunoglobulin fragments as solid phase target antigen....
...
Biology Products: