Posts Tagged: biology

A genetic polymorphism associated with lung cancer progression

A genetic polymorphism associated with lung cancer progression

Genetic polymorphisms associated with cancer progression lead to variations in gene expression and may serve as prognostic markers for lung cancer. Researchers at the Hiroshima University and Saitama Medical University found that in patients with lung cancer, a single nucleotide polymorphism (SNP) may regulate gene and protein expression and be associated with poor prognosis. To… Read more

A study of antidepressants reveals how treatment helps depression management

A study of antidepressants reveals how treatment helps depression management

  Researchers in Japan have shown that several different classes of antidepressants increase early growth responses in astrocytes, star-shaped glial cells, which could help develop new treatments. Amitriptyline is a prototypical antidepressant that is currently used worldwide. Generally, effects of antidepressants such as amitriptyline in depressive patients become evident after treatment for a few weeks…. Read more

Potential of disk-shaped small structures, coccoliths

Potential of disk-shaped small structures, coccoliths

To promote efficient bioenergy production Researchers at Hiroshima University and the University of Tsukuba showed that coccolith disks made of calcium carbonate inĀ Emiliania huxleyi, one of the promising biomass resources, potentially perform roles in reducing and enhancing the light that enters the cell by light scattering. Elucidation of the physiological significance of coccolith formation inĀ E…. Read more

How do harmful chronic myelogenous leukemia stem cells obtain their nutrients?

How do harmful chronic myelogenous leukemia stem cells obtain their nutrients?

Applicability of a new strategy to overcome disease recurrence in patients with chronic myelogenous leukemia     A research group in Japan and in Korea has found a novel nutrient uptake process that maintains the activity of murine chronic myelogenous leukemia (CML) stem cells. Pharmacological inhibition of nutrient uptake decreased CML stem cell activity in… Read more

Protein machines make fluctuating flows unconsciously

Protein machines make fluctuating flows unconsciously

An international research group has demonstrated that protein machines, regardless of their specific functions, can collectively induce fluctuating hydrodynamic flows and substantially enhance the diffusive motions of particles in the cell. Biological cells contain large numbers of active proteins that repeatedly change their conformations. These protein machines have a variety of specific functions, acting as… Read more

New molecular mechanism of neuropathic pain in mice

New molecular mechanism of neuropathic pain in mice

  The downregulation of spinal astrocyte connexin43 (Cx43) expression causes sustained neuropathic pain following peripheral nerve injury. The inflammatory cytokine tumor necrosis factor (TNF) mediates the downregulation of Cx43 expression, which leads to decreased expression of the glutamate transporter GLT-1 and enhanced glutamatergic neurotransmission. Targeting the recovery of Cx43 function using pharmacological approaches or gene… Read more