Archive for cellular and molecular medicine
PET imaging shows if PD-1 cancer immunotherapy is working
PD-1 is a protein on our T cells that normally keeps these immune cells from running amok. A growing number of cancer drugs are designed to inhibit PD-1, enabling patients’ T-cells to attack and kill cancerous cells. PD-1 blockers such as pembrolizumab (Keytruda) have been helpful in treating several cancers including melanoma, non-small cell lung ... Read More about PET imaging shows if PD-1 cancer immunotherapy is working
Existing anti-parasitic drug could offer a treatment for Ebola
Amid the worsening Ebola outbreak in the Congo, now threatening to spill into Rwanda, a new study suggests that an existing, FDA-approved drug called nitazoxanide could potentially help contain this deadly, highly contagious infection. In meticulous experiments in human cells, described today in iScience, the drug significantly amplified immune responses to the virus and inhibited ... Read More about Existing anti-parasitic drug could offer a treatment for Ebola
First sharp images reveal structure of key inflammatory protein
After decades of attempts by the scientific community, researchers have now provided the first clear look at a protein implicated in a vast array of inflammatory conditions. The finding, published recently in Nature, lifts a blindfold that has hampered scientists’ ability to intervene when the immune system overreacts to perceived threats. The protein, known as ... Read More about First sharp images reveal structure of key inflammatory protein
Blood stem cell transplants from any donor, without toxicity?
Many blood disorders, immune disorders and metabolic disorders can be cured with a transplant of hematopoietic (blood-forming) stem cells, also known as bone marrow transplant. But patients must first receive high-dose, whole-body chemotherapy and/or radiation to deplete their own defective stem cells, providing space for the donor cells to engraft. These “conditioning” regimens are highly ... Read More about Blood stem cell transplants from any donor, without toxicity?
New angles for blocking Shiga and ricin toxins, and new light on an iconic biological process
Min Dong, PhD, and his lab are world experts in toxins and how to combat them. They’ve figured out how Clostridium difficile’s most potent toxin gets into cells and zeroed in on the first new botulinum toxin identified since 1969. Now, they’ve set their sights on Shiga and ricin toxins, and not only identified new potential lines of defense, ... Read More about New angles for blocking Shiga and ricin toxins, and new light on an iconic biological process
“Teenage” red blood cells could hold the key to a malaria vaccine
Malaria parasite infection, which affects our red blood cells, can be fatal. Currently, there are about 200 million malaria infections in the world each year and more than 400,000 people, mostly children, die of malaria each year. Now, studying blood samples from patients treated for malaria at a clinical field station in Brazil’s Amazon jungle, ... Read More about “Teenage” red blood cells could hold the key to a malaria vaccine
A huge leap for cloning
Animal cloning, the creation of a genetically identical copy of an individual organism, holds promise for many different reasons, including its use to conserve endangered species and to improve our understanding of developmental biology, which could eventually help us prevent or reverse developmental disorders from the get-go. Although more than 20 species of animals have ... Read More about A huge leap for cloning
Getting a grip on genetic loops
A new discovery about the spatial orientation and physical interactions of our genes provides a promising step forward in our ability to design custom antibodies. This, in turn, could revolutionize the fields of vaccine development and infection control. “We are beginning to understand the full biological impact that the physical structure and movement of our ... Read More about Getting a grip on genetic loops
To monitor health, simply trip the ‘nanoswitches’
https://vimeo.com/232848172Video can’t be loaded because JavaScript is disabled: DNA Nanoswitch Detection (https://vimeo.com/232848172) WATCH: DNA nanoswitches change shape in the presence of biomarkers. The shape change is revealed in a process called gel electrophoresis. Credit: Wyss Institute at Harvard University “Nanoswitches” — engineered, shape-changing strands of DNA — could shake up the way we monitor our ... Read More about To monitor health, simply trip the ‘nanoswitches’
Building a better botox
Aside from reducing wrinkles, botulinum toxins — a.k.a. botox — have a variety of uses in medicine: to treat muscle overactivity in overactive bladder, to correct misalignment of the eyes in strabismus, for a movement disorder called cervical dystonia that causes neck spasms, and more. Two botulinum toxins, types A and B, are FDA-approved and ... Read More about Building a better botox