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Why your fertility cells must have 'radio silence'
Researchers in Kobe, Japan, and Montreal, Canada, have uncovered a previously unknown mechanism which causes embryonic germ cells -- which later develop into sperm or ova -- to go through a period of "transcriptional silence," during which information from the cell's DNA cannot be copied. Without this important phase, unique to cells of this type, an organism produces sterile offspring.
Researchers in Kobe, Japan, and Montreal, Canada, have uncovered a previously unknown mechanism which causes embryonic germ cells -- which later develop into sperm or ova -- to go through a period of "transcriptional silence," during which information from the cell's DNA cannot be copied. Without this important phase, unique to cells of this type, an organism produces sterile offspring.
Genetics
Source: EurekAlert
Posted on: Wednesday, Jan 30, 2008, 12:10pm
Rating: | Views: 1136 | Comments: 0
Source: EurekAlert
Posted on: Wednesday, Jan 30, 2008, 12:10pm
Rating: | Views: 1136 | Comments: 0
A Visionary Approach to Eye Damage Repair
New eye research center in India aims to fix visual impairments with the help of stem cells
New eye research center in India aims to fix visual impairments with the help of stem cells
Stem Cells
Source: SciAM
Posted on: Wednesday, Jan 30, 2008, 12:10pm
Rating: | Views: 1358 | Comments: 0
Source: SciAM
Posted on: Wednesday, Jan 30, 2008, 12:10pm
Rating: | Views: 1358 | Comments: 0
New Rendering Of Ion Channel Suggests How Neurons Fire
Four years ago, Roderick MacKinnon, head of the Laboratory of Molecular Neurobiology and Biophysics at Rockefeller University, together with several members of his lab, published the first ever structure of a voltage-dependent potassium ion channel — a protein that controls the flow of potassium ions across nerve cell membranes and opens and closes in response to changes in cell membrane voltage.
Four years ago, Roderick MacKinnon, head of the Laboratory of Molecular Neurobiology and Biophysics at Rockefeller University, together with several members of his lab, published the first ever structure of a voltage-dependent potassium ion channel — a protein that controls the flow of potassium ions across nerve cell membranes and opens and closes in response to changes in cell membrane voltage.
Neuroscience
Source: Science Daily
Posted on: Wednesday, Jan 30, 2008, 12:09pm
Rating: | Views: 1377 | Comments: 0
Source: Science Daily
Posted on: Wednesday, Jan 30, 2008, 12:09pm
Rating: | Views: 1377 | Comments: 0
U.S. tops new tech usage ranking
The United States, Sweden and Japan topped a new ranking that measures how well countries use telecommunications technologies — networks, cell phones and computers — to boost their social and economic prosperity.
The United States, Sweden and Japan topped a new ranking that measures how well countries use telecommunications technologies — networks, cell phones and computers — to boost their social and economic prosperity.
Technology
Source: MSNBC
Posted on: Wednesday, Jan 30, 2008, 12:09pm
Rating: | Views: 1135 | Comments: 0
Source: MSNBC
Posted on: Wednesday, Jan 30, 2008, 12:09pm
Rating: | Views: 1135 | Comments: 0
Mouse Model Shows The Role Of Cell Signaling In Growth Of Cervical Cancer
Cervical cancer is one of the most prevalent cancers in women worldwide and is the leading cause of cancer death for women in developing countries. In new research Douglas Hanahan (University of California San Francisco, USA) and colleagues investigate how cell signaling in the stroma -- the tissue that surrounds a tumor -- plays a role in the progression of cervical cancer.
Cervical cancer is one of the most prevalent cancers in women worldwide and is the leading cause of cancer death for women in developing countries. In new research Douglas Hanahan (University of California San Francisco, USA) and colleagues investigate how cell signaling in the stroma -- the tissue that surrounds a tumor -- plays a role in the progression of cervical cancer.
Cancer
Source: Science Daily
Posted on: Wednesday, Jan 30, 2008, 12:09pm
Rating: | Views: 1308 | Comments: 0
Source: Science Daily
Posted on: Wednesday, Jan 30, 2008, 12:09pm
Rating: | Views: 1308 | Comments: 0
SARS enters host cells via "fatty rafts": study
The SARS virus, which spread to many countries around the world in 2003 killing about 800 people, invades its victims using "fatty rafts" on the cell membrane, Chinese scientists have found.
The SARS virus, which spread to many countries around the world in 2003 killing about 800 people, invades its victims using "fatty rafts" on the cell membrane, Chinese scientists have found.
Molecular Biology
Source: Reuters
Posted on: Tuesday, Jan 29, 2008, 1:41pm
Rating: | Views: 1259 | Comments: 0
Source: Reuters
Posted on: Tuesday, Jan 29, 2008, 1:41pm
Rating: | Views: 1259 | Comments: 0
Questioning the Allure of Putting Cells in the Bank
Some experts say consumers should think twice before spending money on storing stem cells, because it is not clear how useful they will be.
Some experts say consumers should think twice before spending money on storing stem cells, because it is not clear how useful they will be.
Notch-ing glucose into place
A novel gene called rumi regulates Notch signaling by adding a glucose molecule to the part of the Notch protein that extends outside a cell, said researchers from Baylor College of Medicine in Houston and Stony Brook University in New York in a report that appears today in the journal Cell.
A novel gene called rumi regulates Notch signaling by adding a glucose molecule to the part of the Notch protein that extends outside a cell, said researchers from Baylor College of Medicine in Houston and Stony Brook University in New York in a report that appears today in the journal Cell.
Molecular Biology
Source: EurekAlert
Posted on: Monday, Jan 28, 2008, 11:14am
Rating: | Views: 1123 | Comments: 0
Source: EurekAlert
Posted on: Monday, Jan 28, 2008, 11:14am
Rating: | Views: 1123 | Comments: 0
Cell regeneration brings hope for diabetics
Some cells in the adult pancreas can, in times of extreme stress, produce new insulin-secreting cells, researchers have found.
Some cells in the adult pancreas can, in times of extreme stress, produce new insulin-secreting cells, researchers have found.
Healthcare
Source: Nature
Posted on: Thursday, Jan 24, 2008, 11:48am
Rating: | Views: 1295 | Comments: 0
Source: Nature
Posted on: Thursday, Jan 24, 2008, 11:48am
Rating: | Views: 1295 | Comments: 0
Treating Muscular Dystrophy with Stem Cells
Scientists have developed a way to produce a pure source of muscle cells, a technique that might one day prove useful for treating muscle-related diseases.
Scientists have developed a way to produce a pure source of muscle cells, a technique that might one day prove useful for treating muscle-related diseases.
Stem Cells
Source: Technology Review
Posted on: Tuesday, Jan 22, 2008, 2:12pm
Rating: | Views: 1214 | Comments: 0
Source: Technology Review
Posted on: Tuesday, Jan 22, 2008, 2:12pm
Rating: | Views: 1214 | Comments: 0
Newly discovered virus linked to deadly skin cancer
A new strategy to hunt for human viruses described in this week’s issue of the journal Science by the husband-and-wife team who found the cause of Kaposi’s sarcoma has revealed a previously unknown virus strongly associated with another rare but deadly skin cancer called Merkel cell carcinoma.
A new strategy to hunt for human viruses described in this week’s issue of the journal Science by the husband-and-wife team who found the cause of Kaposi’s sarcoma has revealed a previously unknown virus strongly associated with another rare but deadly skin cancer called Merkel cell carcinoma.
Cancer
Source: EurekAlert
Posted on: Friday, Jan 18, 2008, 9:59am
Rating: | Views: 1176 | Comments: 0
Source: EurekAlert
Posted on: Friday, Jan 18, 2008, 9:59am
Rating: | Views: 1176 | Comments: 0
Report urges study of cell phone health effects
Researchers should study more children and pregnant women in trying to figure out if cell phones or other wireless devices could damage health, the U.S. National Research Council advised
Researchers should study more children and pregnant women in trying to figure out if cell phones or other wireless devices could damage health, the U.S. National Research Council advised
Twins yield leukaemia stem cells
Researchers have tracked down the cells at the source of the most common form of cancer in children, a disease called acute lymphoblastic leukaemia.
Researchers have tracked down the cells at the source of the most common form of cancer in children, a disease called acute lymphoblastic leukaemia.
Stem cells: a national project
Japan is scrambling to harness the promise of Shinya Yamanaka's pioneering work that reprogrammed adult human cells into an embryo-like state. With unprecedented speed, the government is pouring money into developing this home-grown field, some of which will go towards funding a new Yamanaka-headed research centre at Kyoto University.
Japan is scrambling to harness the promise of Shinya Yamanaka's pioneering work that reprogrammed adult human cells into an embryo-like state. With unprecedented speed, the government is pouring money into developing this home-grown field, some of which will go towards funding a new Yamanaka-headed research centre at Kyoto University.
Science Politics
Source: Nature
Posted on: Thursday, Jan 17, 2008, 10:43am
Rating: | Views: 1427 | Comments: 0
Source: Nature
Posted on: Thursday, Jan 17, 2008, 10:43am
Rating: | Views: 1427 | Comments: 0
Penn engineers create carbon nanopipettes that are smaller than cells and measure electric current
University of Pennsylvania engineers and physicians have developed a carbon nanopipette thousands of times thinner than a human hair that measures electric current and delivers fluids into cells. Researchers developed this tiny carbon-based tool to probe cells with minimal intrusion and inject fluids without damaging or inhibiting cell growth.
University of Pennsylvania engineers and physicians have developed a carbon nanopipette thousands of times thinner than a human hair that measures electric current and delivers fluids into cells. Researchers developed this tiny carbon-based tool to probe cells with minimal intrusion and inject fluids without damaging or inhibiting cell growth.
Molecular Biology
Source: EurekAlert
Posted on: Wednesday, Jan 16, 2008, 9:47am
Rating: | Views: 1131 | Comments: 0
Source: EurekAlert
Posted on: Wednesday, Jan 16, 2008, 9:47am
Rating: | Views: 1131 | Comments: 0
Flu Vaccine: Cell Death Suppression Increases Efficacy Of M2 Vaccines
Significant public attention has recently been focused on the development of new anti-influenza (flu) vaccines that provide protection against a broad spectrum of viral strains. One proposed strategy is to utilize conserved viral protein, M2. Clinical trials of M2-containing influenza vaccines were recently initiated by US and European companies.
Significant public attention has recently been focused on the development of new anti-influenza (flu) vaccines that provide protection against a broad spectrum of viral strains. One proposed strategy is to utilize conserved viral protein, M2. Clinical trials of M2-containing influenza vaccines were recently initiated by US and European companies.
Molecular Biology
Source: Science Daily
Posted on: Wednesday, Jan 16, 2008, 9:46am
Rating: | Views: 1522 | Comments: 0
Source: Science Daily
Posted on: Wednesday, Jan 16, 2008, 9:46am
Rating: | Views: 1522 | Comments: 0
Sorting Hack Uses Electricity to ID Types of Stem Cells
Researchers at the University of California, Irvine have figured out how to sort stem cells with electricity.
Researchers at the University of California, Irvine have figured out how to sort stem cells with electricity.
Stem Cells
Source: Wired
Posted on: Tuesday, Jan 15, 2008, 1:07pm
Rating: | Views: 1216 | Comments: 0
Source: Wired
Posted on: Tuesday, Jan 15, 2008, 1:07pm
Rating: | Views: 1216 | Comments: 0
Cell Protein Found That Literally Nips HIV In The Bud
UCLA researchers have found that a key protein in the body's dendritic cells can stop the virus that causes AIDS from "budding" -- part of the virus' life cycle that is crucial to its ability to replicate and infect other cells.
UCLA researchers have found that a key protein in the body's dendritic cells can stop the virus that causes AIDS from "budding" -- part of the virus' life cycle that is crucial to its ability to replicate and infect other cells.
Molecular Biology
Source: Science Daily
Posted on: Monday, Jan 14, 2008, 11:01am
Rating: | Views: 1268 | Comments: 0
Source: Science Daily
Posted on: Monday, Jan 14, 2008, 11:01am
Rating: | Views: 1268 | Comments: 0
Tumor Time Bombs Set Off by Stem Cells
Deadly call and response recruits stem cells to nourish ticking tumors
Deadly call and response recruits stem cells to nourish ticking tumors
Stem Cells
Source: SciAM
Posted on: Monday, Jan 14, 2008, 11:01am
Rating: | Views: 1308 | Comments: 0
Source: SciAM
Posted on: Monday, Jan 14, 2008, 11:01am
Rating: | Views: 1308 | Comments: 0
Uncovering the Achilles' heel of the HIV-1 envelope
New structural details illustrate how a promising class of antibodies may block human immunodeficiency virus (HIV)-1 infection and reveal valuable clues for design of an effective HIV-1 vaccine. The findings, published by Cell Press in the January issue of Immunity, are particularly significant as antibody induction appears to be a key and necessary component of an effective HIV vaccine
New structural details illustrate how a promising class of antibodies may block human immunodeficiency virus (HIV)-1 infection and reveal valuable clues for design of an effective HIV-1 vaccine. The findings, published by Cell Press in the January issue of Immunity, are particularly significant as antibody induction appears to be a key and necessary component of an effective HIV vaccine
Molecular Biology
Source: EurekAlert
Posted on: Sunday, Jan 13, 2008, 3:14pm
Rating: | Views: 1131 | Comments: 0
Source: EurekAlert
Posted on: Sunday, Jan 13, 2008, 3:14pm
Rating: | Views: 1131 | Comments: 0
Dropped and Lost Cell Calls? Sun Might Be to Blame
New Solar Activity Is Trouble for GPS, Cell Phones & Power Companies
New Solar Activity Is Trouble for GPS, Cell Phones & Power Companies
Epigenetics: New Discoveries About The Protein That Oversees DNA Replication
At the Institut Curie, the CNRS team of Geneviève Almouzni(1) has just discovered how the protein Asf1 ensures the correct (re)organization of duplicated DNA. During DNA replication, all the information in the mother cell must be transmitted to the daughter cells. The DNA must be faithfully copied, of course, but also properly organized within the cell. DNA is wrapped around proteins called histones, to form chromatin.
At the Institut Curie, the CNRS team of Geneviève Almouzni(1) has just discovered how the protein Asf1 ensures the correct (re)organization of duplicated DNA. During DNA replication, all the information in the mother cell must be transmitted to the daughter cells. The DNA must be faithfully copied, of course, but also properly organized within the cell. DNA is wrapped around proteins called histones, to form chromatin.
Molecular Biology
Source: Science Daily
Posted on: Sunday, Jan 13, 2008, 2:53pm
Rating: | Views: 1579 | Comments: 0
Source: Science Daily
Posted on: Sunday, Jan 13, 2008, 2:53pm
Rating: | Views: 1579 | Comments: 0
Researchers make nano-scale DNA research tool
U.S. researchers have made a very small research tool that may one day help scientists probe the activity of genes and proteins in a single cell, they said on Thursday, opening the door to a new realm of genetic research.
U.S. researchers have made a very small research tool that may one day help scientists probe the activity of genes and proteins in a single cell, they said on Thursday, opening the door to a new realm of genetic research.
Molecular Biology
Source: Reuters
Posted on: Friday, Jan 11, 2008, 10:33am
Rating: | Views: 1251 | Comments: 0
Source: Reuters
Posted on: Friday, Jan 11, 2008, 10:33am
Rating: | Views: 1251 | Comments: 0
Body Heat To Power Cell Phones? Nanowires Enable Recovery Of Waste Heat Energy
Energy now lost as heat during the production of electricity could be harnessed through the use of silicon nanowires synthesized via a technique developed by researchers with the U.S. Department of Energy’s (DOE) Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) at Berkeley.
Energy now lost as heat during the production of electricity could be harnessed through the use of silicon nanowires synthesized via a technique developed by researchers with the U.S. Department of Energy’s (DOE) Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) at Berkeley.
Technology
Source: Science Daily
Posted on: Friday, Jan 11, 2008, 10:33am
Rating: | Views: 1668 | Comments: 0
Source: Science Daily
Posted on: Friday, Jan 11, 2008, 10:33am
Rating: | Views: 1668 | Comments: 0
Embryonic Stem Cells Created Without Harming Embryo, for Real This Time
Scientists hope a new method for producing embryonic stem cells without damaging embryos will finally place the cells in the labs of scientists searching for cures to now-untreatable diseases.
Scientists hope a new method for producing embryonic stem cells without damaging embryos will finally place the cells in the labs of scientists searching for cures to now-untreatable diseases.
Stem Cells
Source: Wired
Posted on: Thursday, Jan 10, 2008, 1:17pm
Rating: | Views: 1325 | Comments: 0
Source: Wired
Posted on: Thursday, Jan 10, 2008, 1:17pm
Rating: | Views: 1325 | Comments: 0
Bacteria's new bones
Long dismissed as featureless, disorganized sacks, bacteria are now revealing a multitude of elegant internal structures. Ewen Callaway investigates a new field in cell biology.
Long dismissed as featureless, disorganized sacks, bacteria are now revealing a multitude of elegant internal structures. Ewen Callaway investigates a new field in cell biology.
Molecular Biology
Source: Nature
Posted on: Thursday, Jan 10, 2008, 9:46am
Rating: | Views: 1354 | Comments: 0
Source: Nature
Posted on: Thursday, Jan 10, 2008, 9:46am
Rating: | Views: 1354 | Comments: 0
480 Genes That Control Human Cell Division Identified
A team of U.S., Israeli and German scientists used computational biology techniques to discover 480 genes that play a role in human cell division and to identify more than 100 of those genes that have an abnormal pattern of activation in cancer cells.
A team of U.S., Israeli and German scientists used computational biology techniques to discover 480 genes that play a role in human cell division and to identify more than 100 of those genes that have an abnormal pattern of activation in cancer cells.
Molecular Biology
Source: Science Daily
Posted on: Wednesday, Jan 09, 2008, 6:49pm
Rating: | Views: 1723 | Comments: 0
Source: Science Daily
Posted on: Wednesday, Jan 09, 2008, 6:49pm
Rating: | Views: 1723 | Comments: 0
Egypt "Greens" Deserts to Stem Housing, Food Shortages
The fast-growing country is embarking on an ambitious plan to turn its barren deserts into productive farms and fields.
The fast-growing country is embarking on an ambitious plan to turn its barren deserts into productive farms and fields.
Environment
Source: National Geographic
Posted on: Wednesday, Jan 09, 2008, 10:05am
Rating: | Views: 1508 | Comments: 0
Source: National Geographic
Posted on: Wednesday, Jan 09, 2008, 10:05am
Rating: | Views: 1508 | Comments: 0
Research sheds light on the mechanics of gene transcription
The molecular machinery behind gene transcription -- the intricate transfer of information from a segment of DNA to a corresponding strand of messenger RNA -- isn't stationed in special "transcription factories" within a cell nucleus
The molecular machinery behind gene transcription -- the intricate transfer of information from a segment of DNA to a corresponding strand of messenger RNA -- isn't stationed in special "transcription factories" within a cell nucleus
Molecular Biology
Source: EurekAlert
Posted on: Wednesday, Jan 09, 2008, 10:05am
Rating: | Views: 1139 | Comments: 0
Source: EurekAlert
Posted on: Wednesday, Jan 09, 2008, 10:05am
Rating: | Views: 1139 | Comments: 0
Next Steps for Stem Cells
New methods to reprogram adult cells could create novel models of disease.
New methods to reprogram adult cells could create novel models of disease.
Stem Cells
Source: Technology Review
Posted on: Monday, Jan 07, 2008, 12:13pm
Rating: | Views: 1269 | Comments: 0
Source: Technology Review
Posted on: Monday, Jan 07, 2008, 12:13pm
Rating: | Views: 1269 | Comments: 0
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