A recent Scripps Research study found that chronic nicotine use recruits a major brain stress system in rats, contributing to continued tobacco use by exacerbating anxiety and craving upon withdrawal. Administering a compound blocking the receptors involved in this stress system alleviated withdrawal symptoms.
Researchers studied the molecular mechanisms of successful HIV antibodies and found that Fc receptors play a crucial role in preventing infection. The study's findings may lead to the design of tailor-made vaccines that have never been done before.
Researchers identified cadherin 23 and protocadherin 15 as crucial proteins in the conversion of physical cues to electrochemical signals. These proteins form a complex called 'tip links' on hair cells in the inner ear, which is believed to have a central function in converting physical cues into electrical impulses.
A Scripps Research study found that chronic methamphetamine abuse can lead to vascular inflammation and deterioration, increasing the risk of cardiovascular disease. The study also discovered that long-term methamphetamine users have aberrant immune responses, producing proinflammatory cytokines.
Researchers found that pleiotrophin expression activates stromal cells to remodel the tumor microenvironment, inducing tumor angiogenesis and aggressive breast cancers. PTN secretion from human breast cancer cells may be sufficient to shift progression to a more aggressive form of breast cancer.
The Friedlander lab will work with six other laboratory groups to conduct pre-clinical work on adult stem cells, aiming to develop a new approach to treating retinal diseases. The therapy targets abnormal blood vessel formation, which is a leading cause of vision loss in Americans.
A recent study by Scripps Research Institute scientists has identified intercellular mechanisms as essential to maintaining cellular circadian clocks. The research highlights the importance of networked electrical and neurochemical interactions in sustaining cellular rhythms, offering new insights into the circadian clock's operation.
The discovery of the TRPM8 gene, led by Scripps Research Institute's Ardem Patapoutian, reveals that this single gene is responsible for most cool temperature sensations. The study shows that activation of TRPM8 triggers cold sensation and may lead to new treatments to ease pain.
The Scripps Research Institute study provides new evidence that Nod1, a key player in the human immune system, shares similarities with plant Resistance proteins. These proteins protect plants from various pathogens, revealing a common regulatory pathway between humans and plants.
Researchers at Scripps Institute have discovered a new regulatory mechanism for the binding of proteins to membranes through PH domains. IP4, a small soluble molecule, enhances this process, and its inhibition can block T cell maturation and lead to immunodeficiency in animal models.
Researchers at Scripps Institute have developed a new method for producing potential pharmaceuticals from natural compounds, eliminating the need for expensive protecting groups. This breakthrough could lead to significantly reduced production costs and expand interest in natural products for commercial development.
A Scripps research study reveals the dynamic structural details of single prion molecules, shedding light on normal folding mechanisms and abnormal amyloid fibril conversion. The findings may lead to novel therapeutic targets for neurodegenerative diseases.
Scripps research team discovers a chemical pathway that causes mice to overeat and gain weight due to the absence of the EP3 receptor. The study found that mice without the receptors are more active during their normal sleep cycle and eat more, leading to weight increases of up to 30 percent.
Researchers identified two small molecules with remarkable efficacy against botulinum neurotoxin A in animal models. The compounds showed surprisingly little activity in cell-based assays, highlighting the importance of animal-based studies. No significant side effects were observed with either molecule.
Researchers identified p38-regulated/activated protein kinase (PRAK) as an essential component mediating ras-induced senescence and tumor suppression. The study found that PRAK activation inhibits tumor development, laying the groundwork for new cancer therapy.
A Scripps Research study discovered that TRPA1 is directly activated by reactive chemicals through covalent modification of cysteine amino acids. This unique mechanism differs from other ion channels, which typically bind reversibly.
A new study published in PNAS shows that combining anti-angiogenic agents can increase the effectiveness of treatment for tumors and retinopathy. The therapy, which targets multiple angiogenic pathways, resulted in complete inhibition of pathological neovascularization in over 60% of treated eyes.
Researchers have identified a new 'glucose sensor' that plays a crucial role in glucose metabolism and fat synthesis, potentially leading to new treatments for obesity and diabetes. The discovery highlights the significance of the Liver X Receptors (LXRs) in regulating gene expression linked to cholesterol and fat metabolism.
A study published in Nature reveals the structural basis of botulinum toxins' interaction with nerve cells, allowing for improved understanding and potential new treatments for botulism, food poisoning, and nervous system diseases. The discovery could lead to the development of new drugs, vaccines, and antibody therapies.
Researchers at Scripps Research Institute discovered that lowering core body temperature extends lifespan in mice, independent of calorie restriction. The study found a significant increase in median lifespan, with females living up to 20% longer and males by 12%.
Researchers at Scripps Research Institute have discovered a synthetic compound called pluripotin that maintains the youthfulness of stem cells without the need for feeder cells. This breakthrough accelerates stem cell research and holds promise for developing new therapies for diseases like cancer and Parkinson's.
A Scripps Research study has identified a key regulator of lipid signaling networks that contributes to cancer. The findings suggest that the enzyme KIAA1363 may be a critical factor in tumorigenesis and could serve as a potential diagnostic marker for ovarian cancer.
Researchers discovered that a genetic repair mechanism enables the dynamic assembly and change of shape in proteins to join DNA ends during replication and repair. This mechanism allows DNA ligases to switch between open and closed conformations, enabling efficient ligation of DNA.
Researchers used NMR to detect higher energy structural sub-states of E. coli dihydrofolate reductase, finding that dynamic fluctuations channel the enzyme through its reaction cycle by minimizing energetic barriers. This challenges the traditional 'induced fit' hypothesis and highlights the importance of protein motion in catalysis.
Researchers found a unique genetic mutation that makes people susceptible to herpes simplex virus-1, leading to viral encephalitis. The study challenges current thinking on how genes work with infections, providing new insights into the immune system's response to pathogens.
The partnership aims to address pediatric health concerns through groundbreaking scientific research and monitoring disease, with the goal of finding long-term solutions for childhood obesity and type 2 diabetes. The collaboration will also support increased awareness and education on these critical health issues.
Researchers found a new pathway for building neurotransmitter lipids using enzyme Abh4, which could lead to more selective treatment options for metabolic and central nervous system disorders.
The Consortium for Functional Glycomics, a group of scientists from around the world, has received a $40.7 million grant to unravel the mysteries of carbohydrates. The team plans to use this funding to uncover new biology and translate discoveries into treatments for disease.
A Scripps Research Institute team developed compounds that reactivated the frataxin gene in blood cells from 13 Friedreich's ataxia patients, with one compound producing full reactivation in 100% of cells tested. The findings offer a potential therapeutic avenue for the disease, which affects 1 in 20,000 people in the US.
Researchers found two opposing mechanisms protecting cells from protein aggregation: one breaks down aggregates, while the other transforms smaller ones into less toxic high-molecular-weight aggregates. This discovery may lead to new therapies for age-related Neurodegenerative Diseases.
A new anti-obesity vaccine has shown promising results by slowing down weight gain and reducing body fat in animal models. The vaccine, targeting the hormone ghrelin, allowed rats to maintain normal eating habits while gaining less weight and accumulating less fat.
Scientists create 'chemically programmed antibody' by linking small molecules and antibodies, enhancing therapeutic efficacy against breast cancer metastasis. The approach has potential for treating multiple types of cancers, increasing effectiveness of existing therapies.
Researchers found infectious misfolded prion protein in heart muscle, decreasing the heart's ability to pump blood. High levels of scrapie infectivity were also identified in the blood of mice used in the study.
The study revealed the outer lipid envelope interacts with the capsid shell of hepatitis B virus, which is enormous and nearly 10 times larger than a hemoglobin molecule. The findings may offer new clues on how the virus replicates in vivo.
A recent study by Scripps Research Institute has identified novel immunogens and genes involved in the development of drug resistance, which could lead to new vaccine targets. The research uses gene-chip technology to analyze the genomes of Plasmodium falciparum parasites.
A new study has discovered a novel estrogen receptor that differs significantly from existing receptors, with potential implications for anti-estrogen breast cancer therapy. The receptor, hER-?36, is predominantly localized on the cell plasma membrane and stimulates cell growth through the MAPK/ERK signaling pathway.
Researchers found that withdrawal contributes to compulsive drug consumption in addicts, creating a vicious cycle. A previously unknown source of drug craving was also identified through Pavlovian conditioning.
The hepatitis C virus uses its protease activity to destroy a key antiviral signaling protein called MAVS, preventing infected cells from producing type 1 interferon. This allows the virus to evade the immune system and persist indefinitely, highlighting potential new treatment strategies.
A new study discovered that BMP4 signaling is necessary and sufficient for the proliferation of pancreas progenitor cells, leading to an increase in Id expression. The researchers also found that inhibition of BMP4 results in a decrease in proliferating duct cells and an increase in the expression of a bHLH protein-dependent factor PAX6.
Researchers at Scripps Research Institute determined the x-ray structure of EmrD, a multidrug transporter protein in E. coli, which could help understand its mechanism and develop new drugs. The study revealed an internal cavity composed primarily of hydrophobic residues that contribute to drug specificity.
The largest clinical trial on pharmacologic and behavioral treatments for alcohol dependence shows that medication treatment significantly improves outcomes compared to placebo. The study also provides new safety data on prescription drugs naltrexone and acamprosate, suggesting a high degree of comfort for prescribing physicians.
Researchers found increased expression of immune response genes, including CCL5, in the brain, which may contribute to neurodegenerative symptoms and cognitive dysfunction in HIV-infected individuals. The study provides insights into the chronic phase of NeuroAIDS, a significant health problem affecting quality of life.
A study published in Nature found that caspase-12 deficient mice are resistant to peritonitis and septic shock, clearing pathogenic bacteria more efficiently. The absence of caspase-12 reduces pro-inflammatory cytokine production, increasing vulnerability to bacterial infection and septic mortality.
Researchers have identified 20 candidate genes that regulate alcohol preference, shedding light on the genetic factors underlying excessive drinking. The study suggests that differences in brain function and homeostasis may contribute to an individual's reaction to alcohol.
A new discovery in archaea DNA unwinding enzymes XPB revealed unexpected genome repair functions, which may improve some forms of chemotherapy. The study found that XPB interacts with damaged DNA and enhances its unwinding activity.
Researchers at Scripps Research Institute have identified a new class of potent SARS virus protease inhibitors, offering hope for developing a possible drug treatment against the disease. These benzotriazole esters block the enzyme and are stable enough to be used in clinical trials.
Researchers at Scripps Research Institute demonstrate that RNA enzymes can be evolved into DNA enzymes with the same catalytic function, challenging existing understanding of life's origins. The study offers fresh insights into the evolutionary conversion process and its potential implications for our understanding of life.
The study found that small mutations can change the binding site preference of the avian virus from bird to human receptors, increasing its chances of infection. This critical step is a key reason why most avian influenza viruses are not easily transmitted between humans.
Researchers at Scripps Research Institute have discovered small molecule activators of botulinum neurotoxin (BoNT), which could minimize dosage and reduce resistance. The findings hold promise for increasing the clinical efficacy of BoNT, a toxin with a range of therapeutic uses.
Researchers at Scripps Research Institute developed a new high-throughput screening methodology to analyze the functional elements of TRPM8 ion channel protein. This breakthrough could lead to the discovery of new pain therapies by identifying amino acid residues involved in menthol's interaction with ion channels.