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What Tips The Balance? Understanding Why X Chromosome Inactivation Can Be Skewed
To ensure that women and men express equivalent levels of the genes found on X chromosomes, one of the two X chromosomes in the cells of a women is inactive. X chromosome inactivation (XCI) occurs early in development, at approximately the time an embryo implants in the womb, and all cells stemming from a given cell have the same X chromosome inactivated.
To ensure that women and men express equivalent levels of the genes found on X chromosomes, one of the two X chromosomes in the cells of a women is inactive. X chromosome inactivation (XCI) occurs early in development, at approximately the time an embryo implants in the womb, and all cells stemming from a given cell have the same X chromosome inactivated.
Molecular Biology
Source: Science Daily
Posted on: Thursday, Dec 27, 2007, 2:40pm
Rating: | Views: 1316 | Comments: 0
Source: Science Daily
Posted on: Thursday, Dec 27, 2007, 2:40pm
Rating: | Views: 1316 | Comments: 0
New plant study reveals a 'deeply hidden' layer of the transcriptome
Cells keep a close watch over the transcriptome – the totality of all parts of the genome that are expressed in any given cell at any given time. Researchers at the Salk Institute for Biological Studies and the University of Missouri-Kansas City teamed up to peel back another layer of transcriptional regulation and gain new insight into how genomes work.
Cells keep a close watch over the transcriptome – the totality of all parts of the genome that are expressed in any given cell at any given time. Researchers at the Salk Institute for Biological Studies and the University of Missouri-Kansas City teamed up to peel back another layer of transcriptional regulation and gain new insight into how genomes work.
Molecular Biology
Source: EurekAlert
Posted on: Thursday, Dec 27, 2007, 2:40pm
Rating: | Views: 1183 | Comments: 0
Source: EurekAlert
Posted on: Thursday, Dec 27, 2007, 2:40pm
Rating: | Views: 1183 | Comments: 0
Sea cucumber 'new malaria weapon'
Sea cucumbers could provide a potential new weapon to block transmission of the malaria parasite, a study suggests.
Sea cucumbers could provide a potential new weapon to block transmission of the malaria parasite, a study suggests.
Molecular Biology
Source: BBC News
Posted on: Sunday, Dec 23, 2007, 4:37pm
Rating: | Views: 1395 | Comments: 0
Source: BBC News
Posted on: Sunday, Dec 23, 2007, 4:37pm
Rating: | Views: 1395 | Comments: 0
Drug Aimed At Hendra and Nipah viruses Blocks Live Viral Infection
Two deadly and highly infectious viruses—both potential bioterror threats—may have met their match in a new drug developed by scientists at Weill Cornell Medical College in New York City.
Two deadly and highly infectious viruses—both potential bioterror threats—may have met their match in a new drug developed by scientists at Weill Cornell Medical College in New York City.
Molecular Biology
Source: Science Daily
Posted on: Thursday, Dec 20, 2007, 11:35am
Rating: | Views: 1204 | Comments: 0
Source: Science Daily
Posted on: Thursday, Dec 20, 2007, 11:35am
Rating: | Views: 1204 | Comments: 0
Molecular Code Broken For Drug Industry's Pet Proteins
All cells are surrounded by protective, fatty membranes.In the cell membrane there are thousands of membrane proteins that transport nutritional substances, ions, and water through the membrane. For the drug industry, membrane proteins are high priority "drug targets."
All cells are surrounded by protective, fatty membranes.In the cell membrane there are thousands of membrane proteins that transport nutritional substances, ions, and water through the membrane. For the drug industry, membrane proteins are high priority "drug targets."
Molecular Biology
Source: Science Daily
Posted on: Wednesday, Dec 19, 2007, 11:05am
Rating: | Views: 1584 | Comments: 0
Source: Science Daily
Posted on: Wednesday, Dec 19, 2007, 11:05am
Rating: | Views: 1584 | Comments: 0
Way cells store fat is uncovered
US scientists have discovered how fat is stored in the body's cells - promising new treatments for obesity.
US scientists have discovered how fat is stored in the body's cells - promising new treatments for obesity.
Molecular Biology
Source: BBC News
Posted on: Tuesday, Dec 18, 2007, 11:12am
Rating: | Views: 1473 | Comments: 0
Source: BBC News
Posted on: Tuesday, Dec 18, 2007, 11:12am
Rating: | Views: 1473 | Comments: 0
Laser Beam 'Fire Hose' Used To Sort Cells
Separating particular kinds of cells from a sample could become faster, cheaper and easier thanks to a new system developed by MIT researchers that involves pushing up the cells with a laser beam "fire hose."
Separating particular kinds of cells from a sample could become faster, cheaper and easier thanks to a new system developed by MIT researchers that involves pushing up the cells with a laser beam "fire hose."
Molecular Biology
Source: Science Daily
Posted on: Monday, Dec 17, 2007, 8:59am
Rating: | Views: 1336 | Comments: 0
Source: Science Daily
Posted on: Monday, Dec 17, 2007, 8:59am
Rating: | Views: 1336 | Comments: 0
Cholesterol fine tunes hearing
Levels of cholesterol in the membranes of hair cells in the inner ear can affect your hearing
Levels of cholesterol in the membranes of hair cells in the inner ear can affect your hearing
Molecular Biology
Source: EurekAlert
Posted on: Monday, Dec 17, 2007, 8:58am
Rating: | Views: 1155 | Comments: 0
Source: EurekAlert
Posted on: Monday, Dec 17, 2007, 8:58am
Rating: | Views: 1155 | Comments: 0
New target for anti-malaria drugs
Targeting a key protein may help overcome the malaria parasite's increasing resistance to conventional drugs
Targeting a key protein may help overcome the malaria parasite's increasing resistance to conventional drugs
Molecular Biology
Source: BBC News
Posted on: Saturday, Dec 15, 2007, 6:23pm
Rating: | Views: 1460 | Comments: 0
Source: BBC News
Posted on: Saturday, Dec 15, 2007, 6:23pm
Rating: | Views: 1460 | Comments: 0
Identification of new genes shows a complex path to cell death
Can a tiny winged insect’s salivary glands really tell us about processes relevant to human disease" Yes, according to a new study by researchers at the University of Massachusetts Medical School (UMMS), who gained new insights into autophagy—a cellular degradation process associated with a form of programmed cell death—by studying the salivary gland cells of the fruit fly.
Can a tiny winged insect’s salivary glands really tell us about processes relevant to human disease" Yes, according to a new study by researchers at the University of Massachusetts Medical School (UMMS), who gained new insights into autophagy—a cellular degradation process associated with a form of programmed cell death—by studying the salivary gland cells of the fruit fly.
Molecular Biology
Source: EurekAlert
Posted on: Friday, Dec 14, 2007, 9:41am
Rating: | Views: 1149 | Comments: 0
Source: EurekAlert
Posted on: Friday, Dec 14, 2007, 9:41am
Rating: | Views: 1149 | Comments: 0
One Small Step for Plants
The first analysis of a moss genome reveals that mosses are surprisingly complex, with 35,000 potential genes--10,000 more than the first land plant sequenced--and a host of unique adaptations not found in other green landlubbers. And because of where mosses fall on the plant family tree, those genes are revealing how plants made their way onto land.
The first analysis of a moss genome reveals that mosses are surprisingly complex, with 35,000 potential genes--10,000 more than the first land plant sequenced--and a host of unique adaptations not found in other green landlubbers. And because of where mosses fall on the plant family tree, those genes are revealing how plants made their way onto land.
Plant Biology
Source: Science
Posted on: Friday, Dec 14, 2007, 9:40am
Rating: | Views: 1711 | Comments: 0
Source: Science
Posted on: Friday, Dec 14, 2007, 9:40am
Rating: | Views: 1711 | Comments: 0
Semen boosts HIV transmission
A component found in semen can enhance HIV transmission by as much as 100,000-fold, researchers have found. The results, if verified in a clinical setting, could identify a new way to help prevent the spread of the disease.
A component found in semen can enhance HIV transmission by as much as 100,000-fold, researchers have found. The results, if verified in a clinical setting, could identify a new way to help prevent the spread of the disease.
Molecular Biology
Source: Nature
Posted on: Friday, Dec 14, 2007, 9:40am
Rating: | Views: 1410 | Comments: 0
Source: Nature
Posted on: Friday, Dec 14, 2007, 9:40am
Rating: | Views: 1410 | Comments: 0
Profound immune system discovery opens door to halting destruction of lupus
A researcher has discovered an entirely new and powerful molecular switch that controls the inflammatory response of the immune system. The major finding, reported in the December 14th issue of the journal Cell, means that new methods can now be pursued to shut down uncontrolled inflammation, restore immune system regulation, and treat chronic autoimmune disorders such as lupus.
A researcher has discovered an entirely new and powerful molecular switch that controls the inflammatory response of the immune system. The major finding, reported in the December 14th issue of the journal Cell, means that new methods can now be pursued to shut down uncontrolled inflammation, restore immune system regulation, and treat chronic autoimmune disorders such as lupus.
Molecular Biology
Source: EurekAlert
Posted on: Friday, Dec 14, 2007, 9:29am
Rating: | Views: 1191 | Comments: 0
Source: EurekAlert
Posted on: Friday, Dec 14, 2007, 9:29am
Rating: | Views: 1191 | Comments: 0
Deadly virus strips away immune system's defensive measures
When the alert goes out that a virus has invaded the body, cells that have yet to be attacked prepare by "armoring" themselves for combat, attaching specific antiviral molecules to many of their own proteins to help resist the invader. Unfortunately, the deadly Crimean Congo hemorrhagic fever virus knows a simple but devastating way around this defense: just cut the armor off host cell proteins.
When the alert goes out that a virus has invaded the body, cells that have yet to be attacked prepare by "armoring" themselves for combat, attaching specific antiviral molecules to many of their own proteins to help resist the invader. Unfortunately, the deadly Crimean Congo hemorrhagic fever virus knows a simple but devastating way around this defense: just cut the armor off host cell proteins.
Molecular Biology
Source: EurekAlert
Posted on: Thursday, Dec 13, 2007, 9:18am
Rating: | Views: 1180 | Comments: 0
Source: EurekAlert
Posted on: Thursday, Dec 13, 2007, 9:18am
Rating: | Views: 1180 | Comments: 0
Polymer scaffolds may restore damaged nerves
A polymer laced with chemicals that mimic a key neurotransmitter can trigger the regeneration of damaged nerve cells
A polymer laced with chemicals that mimic a key neurotransmitter can trigger the regeneration of damaged nerve cells
Molecular Biology
Source: New Scientist
Posted on: Thursday, Dec 13, 2007, 9:18am
Rating: | Views: 1223 | Comments: 0
Source: New Scientist
Posted on: Thursday, Dec 13, 2007, 9:18am
Rating: | Views: 1223 | Comments: 0
Piddling fish face off threat of competition
Research published today in the online open access journal, BMC Biology, shows that male tilapia fish use pheromones in their urine to fight off competitors and enforce social dominance.
Research published today in the online open access journal, BMC Biology, shows that male tilapia fish use pheromones in their urine to fight off competitors and enforce social dominance.
Animal Behavior
Source: EurekAlert
Posted on: Wednesday, Dec 12, 2007, 10:32am
Rating: | Views: 1150 | Comments: 0
Source: EurekAlert
Posted on: Wednesday, Dec 12, 2007, 10:32am
Rating: | Views: 1150 | Comments: 0
Remodeling the Model T
A new lineage of T helper cells shakes up an old paradigm.
A new lineage of T helper cells shakes up an old paradigm.
Molecular Biology
Source: The Scientist
Posted on: Wednesday, Dec 12, 2007, 9:03am
Rating: | Views: 1191 | Comments: 0
Source: The Scientist
Posted on: Wednesday, Dec 12, 2007, 9:03am
Rating: | Views: 1191 | Comments: 0
Bacteria Employ Type Of DNA Modification Never Before Seen In Nature
Scientists have discovered that bacteria employ a type of DNA modification never before seen in nature. For several decades, researchers have known that it is possible to modify synthetic oligonucleotides by adding sulfur to the sugar-phosphate DNA backbone as a phosphorothioate. Bacteria contain a gene cluster that gives them the ability to make this modification on their own.
Scientists have discovered that bacteria employ a type of DNA modification never before seen in nature. For several decades, researchers have known that it is possible to modify synthetic oligonucleotides by adding sulfur to the sugar-phosphate DNA backbone as a phosphorothioate. Bacteria contain a gene cluster that gives them the ability to make this modification on their own.
Molecular Biology
Source: Science Daily
Posted on: Monday, Dec 10, 2007, 9:49am
Rating: | Views: 1647 | Comments: 0
Source: Science Daily
Posted on: Monday, Dec 10, 2007, 9:49am
Rating: | Views: 1647 | Comments: 0
Pathogens Use Previously Undescribed Mechanism To Sabotage Host Immune System
New research identifies a previously unknown enzymatic mechanism that subverts the early host immune response and promotes pathogenicity by manipulating a common signaling pathway in host cells. The research may have important implications for the food industry and for development of new antibiotics.
New research identifies a previously unknown enzymatic mechanism that subverts the early host immune response and promotes pathogenicity by manipulating a common signaling pathway in host cells. The research may have important implications for the food industry and for development of new antibiotics.
Molecular Biology
Source: Science Daily
Posted on: Monday, Dec 10, 2007, 9:49am
Rating: | Views: 1297 | Comments: 0
Source: Science Daily
Posted on: Monday, Dec 10, 2007, 9:49am
Rating: | Views: 1297 | Comments: 0
Sex "switch" points way to smarter pest control
Turning off a sex "switch" triggered when female insects mate may be a smart and green way of controlling pests in future.
Turning off a sex "switch" triggered when female insects mate may be a smart and green way of controlling pests in future.
Molecular Biology
Source: Reuters
Posted on: Sunday, Dec 09, 2007, 3:33pm
Rating: | Views: 1227 | Comments: 0
Source: Reuters
Posted on: Sunday, Dec 09, 2007, 3:33pm
Rating: | Views: 1227 | Comments: 0
Heads Or Tails? Scientists Identify Gene That Regulates Polarity In Regenerating Flatworms
When cut, a planarian flatworm can use a population of stem cells called neoblasts to regenerate new heads, new tails or even entire new organisms from a tiny fragment of its body. Mechanisms have been sought to explain this process of regeneration polarity for over 100 years, but until now, little was known about how planaria can regenerate heads and tails at their proper sites.
When cut, a planarian flatworm can use a population of stem cells called neoblasts to regenerate new heads, new tails or even entire new organisms from a tiny fragment of its body. Mechanisms have been sought to explain this process of regeneration polarity for over 100 years, but until now, little was known about how planaria can regenerate heads and tails at their proper sites.
Molecular Biology
Source: Science Daily
Posted on: Sunday, Dec 09, 2007, 3:33pm
Rating: | Views: 1701 | Comments: 0
Source: Science Daily
Posted on: Sunday, Dec 09, 2007, 3:33pm
Rating: | Views: 1701 | Comments: 0
Protein Protects Brain Against Compound In Lead Poisoning, Liver Disease
Scientists have discovered that a protein known as PEPT2 protects the brains of mice from a naturally occurring but potentially toxic compound present in lead poisoning and in a class of liver diseases that can cause serious neurological complications.
Scientists have discovered that a protein known as PEPT2 protects the brains of mice from a naturally occurring but potentially toxic compound present in lead poisoning and in a class of liver diseases that can cause serious neurological complications.
Molecular Biology
Source: Science Daily
Posted on: Friday, Dec 07, 2007, 10:40am
Rating: | Views: 1347 | Comments: 0
Source: Science Daily
Posted on: Friday, Dec 07, 2007, 10:40am
Rating: | Views: 1347 | Comments: 0
From kinase to cancer
The story of discovering PI3 kinase, and what it means for a fundamental pathway in cancer.
The story of discovering PI3 kinase, and what it means for a fundamental pathway in cancer.
Molecular Biology
Source: The Scientist
Posted on: Friday, Dec 07, 2007, 10:40am
Rating: | Views: 1208 | Comments: 0
Source: The Scientist
Posted on: Friday, Dec 07, 2007, 10:40am
Rating: | Views: 1208 | Comments: 0
Pheromone for mouse aggression found
A whiff of a single type of protein from urine is enough to make a male mouse pick a fight, researchers have found. Pheromone scents that elicit aggressive behaviour have long been predicted, but have proven elusive until now.
A whiff of a single type of protein from urine is enough to make a male mouse pick a fight, researchers have found. Pheromone scents that elicit aggressive behaviour have long been predicted, but have proven elusive until now.
Molecular Biology
Source: Nature
Posted on: Thursday, Dec 06, 2007, 8:48am
Rating: | Views: 1528 | Comments: 0
Source: Nature
Posted on: Thursday, Dec 06, 2007, 8:48am
Rating: | Views: 1528 | Comments: 0
Cell biology sideshow draws a crowd
“Talent is not a pre-requisite,” said Kerry Bloom, a cell biologist at the University of North Carolina in Chapel Hill, minutes before he judged Cell Slam, a scientific sideshow that drew a crowd of more than 500 cell biologists during their society’s annual meeting. “Spirit — that’s what we want.”
“Talent is not a pre-requisite,” said Kerry Bloom, a cell biologist at the University of North Carolina in Chapel Hill, minutes before he judged Cell Slam, a scientific sideshow that drew a crowd of more than 500 cell biologists during their society’s annual meeting. “Spirit — that’s what we want.”
Cells mend damaged mouse hearts
Researchers have managed to restore heart function by transplanting muscle stem cells into damaged mouse hearts. Their results suggest that the technique could one day be used to heal heart tissue in humans.
Researchers have managed to restore heart function by transplanting muscle stem cells into damaged mouse hearts. Their results suggest that the technique could one day be used to heal heart tissue in humans.
Molecular Biology
Source: Nature
Posted on: Thursday, Dec 06, 2007, 8:46am
Rating: | Views: 1466 | Comments: 0
Source: Nature
Posted on: Thursday, Dec 06, 2007, 8:46am
Rating: | Views: 1466 | Comments: 0
'Scrambled' polymers kill drug-resistant bacteria
"Scrambled-up" polymers can kill bacteria, and may offer hope in beating problems of antibiotic drug resistance, suggests a new study. Researchers at the University of Wisconsin, in Madison, US, had been working on making molecules that mimic the short proteins known as "host-defence peptides".
"Scrambled-up" polymers can kill bacteria, and may offer hope in beating problems of antibiotic drug resistance, suggests a new study. Researchers at the University of Wisconsin, in Madison, US, had been working on making molecules that mimic the short proteins known as "host-defence peptides".
Molecular Biology
Source: New Scientist
Posted on: Thursday, Dec 06, 2007, 8:46am
Rating: | Views: 1363 | Comments: 0
Source: New Scientist
Posted on: Thursday, Dec 06, 2007, 8:46am
Rating: | Views: 1363 | Comments: 0
Why Skin Is Strong: Cells Stick Like Velcro
Scientists have gotten their best look ever at interactions inside human skin cells, finding a Velcro-like setup that links them and makes skin strong while also supple. The cell-interior images, made with a new a technique called cryo-electron tomography, show the proteins responsible for cell-cell contacts for the first time.
Scientists have gotten their best look ever at interactions inside human skin cells, finding a Velcro-like setup that links them and makes skin strong while also supple. The cell-interior images, made with a new a technique called cryo-electron tomography, show the proteins responsible for cell-cell contacts for the first time.
Molecular Biology
Source: LiveScience
Posted on: Thursday, Dec 06, 2007, 8:45am
Rating: | Views: 1413 | Comments: 0
Source: LiveScience
Posted on: Thursday, Dec 06, 2007, 8:45am
Rating: | Views: 1413 | Comments: 0
Kudzu Plant: Source Of Ozone Pollution?
They say more research is necessary to be sure, but scientists suspect the pesky but aggressive kudzu vine - which each year adds 200 square miles to its turf - might also be causing smog and adding to global warming.
They say more research is necessary to be sure, but scientists suspect the pesky but aggressive kudzu vine - which each year adds 200 square miles to its turf - might also be causing smog and adding to global warming.
Plant Biology
Source: CBS News
Posted on: Tuesday, Dec 04, 2007, 11:20am
Rating: | Views: 1700 | Comments: 0
Source: CBS News
Posted on: Tuesday, Dec 04, 2007, 11:20am
Rating: | Views: 1700 | Comments: 0
'Smart' flower bulbs pull themselves to deeper ground
Confused about the right planting depth for flower bulbs? Trust the bulbs! Researchers have discovered that some flower bulbs are actually "smart" enough to adjust themselves to the right planting depth.
Confused about the right planting depth for flower bulbs? Trust the bulbs! Researchers have discovered that some flower bulbs are actually "smart" enough to adjust themselves to the right planting depth.
Plant Biology
Source: EurekAlert
Posted on: Monday, Dec 03, 2007, 11:28am
Rating: | Views: 1228 | Comments: 0
Source: EurekAlert
Posted on: Monday, Dec 03, 2007, 11:28am
Rating: | Views: 1228 | Comments: 0
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