Quantcast

Latest Cellular processes Stories

03a62c3359e24066b02ac41cd64420ac1
2009-11-17 07:55:00

A powerful new breast cancer treatment could result from packaging one of the newer drugs that inhibits cancer's hallmark wild growth with another that blocks a primordial survival technique in which the cancer cell eats part of itself, researchers say. While they are powerful killers of some breast cancer cells, new drugs called histone deacetylase inhibitors, or HDAC inhibitors, also increase self-digestion, or autophagy, in surviving, mega-stressed cells, Medical College of Georgia Cancer...

d4b524d002dc922bf515ec85a34c9a371
2009-11-14 07:49:18

Meiosis "“ the pairing and recombination of chromosomes, followed by segregation of half to each egg or sperm cell "“ is a major crossroads in all organisms reproducing sexually. Yet, how the cell precisely choreographs these chromosomal interactions is a long-standing question. New findings by University of California, Berkeley, scientists show that the cell's cytoskeleton, which moves things around in the cell, plays a critical role, essentially reaching into the nucleus to...

e03a8fead0e24c898ecf4c75d9339d7c1
2009-10-29 06:05:00

U.S. geneticists say that for the first time ever they have successfully managed to induce human embryonic stem cells to transform into germ cells capable of producing egg and sperm cells "” a discovery that not only illuminates a previously ill-understood phase of human development but one that also carries practical potential for the treatment of infertility. Dr. Renee Riejo Pera of Stanford University in California explained that getting back to the earliest phases of human life and...

2009-10-20 08:15:00

When mother and daughter cells are created each time a cell divides, they are not exactly alike. They have the same set of genes, but differ in the way they regulate them. New research now reveals that these regulatory differences between mother and daughter cells are directly linked to how they prepare for their next split. The work, a collaboration between scientists at Rockefeller University and the State University of New York, Stony Brook, may ultimately lead to a better understanding of...

2009-10-13 10:55:14

Recent data have indicated that the more brown fat cells a person has the lower their body mass. This contrasts with what is known for white fat cells, the more white fat cells a person has the greater their body mass. It has been suggested that manipulating the development of fat cells so that they become brown fat cells rather than white fat cells might be an approach to treat obesity. However, before such an approach can be developed more needs to be learned about the mechanisms regulating...

2009-10-08 09:14:21

College of Medicine discovery may lead to better ways to fight cancer A Florida State University College of Medicine researcher has solved a century-old mystery about proteins that play a vital role in the transfer of the human genetic code from one cell to another. The discovery could lead to finding new ways to help the body fight a variety of diseases, including cancer. For more than a hundred years, the best scientific evidence supported a belief that histones -- responsible for packaging...

2009-10-06 15:10:30

When it comes to the two basic types of cells, prokaryotes and eukaryotes, compartmentalization is everything. Prokaryotes are evolutionarily ancient cells that only have a membrane surrounding their outer boundary, while the more complex eukaryotes have an outer membrane and membrane bound compartments within the cell. Perhaps most notable is the double layered membrane that surrounds the nucleus, the cellular compartment which houses the cell's genetic material. The genetic material is very...

2009-10-05 14:20:46

A Purdue University researcher has discovered that the absence of certain proteins needed for proper cell duplication can lead to cancer. Xiaoqi Liu, an assistant professor of biochemistry, found that cytoplasmic linker protein-170, or CLIP-170, plays a major role in proper cell duplication and DNA distribution. When the protein is removed, cell duplicates lack entire copies of DNA and can become cancerous. Liu's findings were published in the early online version of the Journal of Biological...

2009-09-24 08:02:14

For years, health conscious people have been taking antioxidants to reduce the levels of reactive oxygen in their blood and prevent the DNA damage done by free radicals, which are the result of oxidative stress. But could excessive use of antioxidants deplete our immune systems? Research at UCLA's Jonsson Comprehensive Cancer Center has raised that question. It has been known for decades that reactive oxygen species (ROS) - ions or very small molecules that include free radicals - damage...

2009-09-17 09:17:52

A Florida State University scientist says he's found the cause of chromosomal birth defects, such as Down, XYY, Edwards, Patau and Turner's syndromes. Using yeast genetics, Assistant Professor Hong-Guo Yu and colleagues selectively removed a single protein from the cell division process called meiosis and found that when the protein known as Pds5 is missing, chromosomes fail to segregate and pair up properly, and birth defects can result. Researchers said the study shines new light on the...


Word of the Day
holluschickie
  • A 'bachelor seal'; a young male seal which is prevented from mating by its herd's older males (mated bulls defending their territory).
This comes from the Russian word for 'bachelors.'
Related