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Scientists have developed a lipid nanoparticle system capable of delivering messenger RNA (mRNA) to the brain via intravenous injection, a challenge that has long been limited by the protective nature of the blood-brain barrier.
Functional analysis based on these structures also revealed how a 'prime editor' could achieve reverse transcription, synthesizing DNA from RNA, without 'cutting' both strands of the double helix. Clarifying these molecular mechanisms contributes greatly to designing gene-editing tools accurate enough for gene therapy treatments.
The results pave the way for future single-cell or spatially resolved studies that look at how cells surrounding a metastatic tumor impact its progression or treatment outcomes. Eventually, we hope that these methods can help inform the development of drugs or even guide patients’ individual treatments.”
They also found that patients treated with dexamethasone, a common treatment for brain cancer patients, showed signs of one of the immunosuppressive programs, suggesting that this drug could reduce the effectiveness of immunotherapy. To do this, the team used a different approach to single-cell analysis.
Introduction Messenger RNA (mRNA) technology has emerged as one of the most significant medical breakthroughs. The Expanding Role of mRNA in Cancer Therapy One of the most exciting applications of mRNA therapeutics lies in cancer treatment, where leveraging the immune system to target tumors offers a novel approach.
Using what they learned from these experiments, they developed a framework — ligation-enabled messenger RNA-oligonucleotide assembly, or LEGO — that enables researchers to chemically modify the structure of mRNA molecules and influence their interactions with the cell's protein-translation machinery, achieving desired therapeutic effects.
While RA therapies targeted to specific inflammatory pathways have emerged, only some patients’ symptoms improve with treatment, emphasizing the need for multiple treatment approaches tailored to different disease subtypes. They also found that patients’ CTAPs were dynamic and could change over time in response to treatment.
Scientists from Northwestern Medicine have demonstrated that RNA interference could have a crucial role in the onset and development of Alzheimer’s disease (AD). sRNAs Cellular functions rely on numerous protein-coding and noncoding RNAs and the RNA-binding proteins associated with them, which form ribonucleoprotein complexes (RNPs).
Kinsella Nature , 2024 [link] WRN helicase is a promising target for treatment of cancers with microsatellite instability (MSI) due to its essential role in resolving deleterious non-canonical DNA structures that accumulate in cells with faulty mismatch repair mechanisms 1 , 2 , 3 , 4 , 5.
Haemoglobin A1c (HbA1c) is a validated surrogate endpoint for the reduction of microvascular complications associated with diabetes mellitus; reduced HIV-RNA levels serve as an endpoint for HIV disease control; and a reduction in low-density lipoprotein (LDL) cholesterol is used as an endpoint indicating lower likelihood of cardiovascular events.
This includes verifying the experimental design and understanding how the data was generated whether it was from RNA sequencing, mass spectrometry, or other biological assays. Figure 1: High-level workflow for early drug discovery Once the raw data has been gathered, the next step is to gain a thorough understanding of the data.
Forging the toolkit for subcellular omics Cellular components known as organelles, consisting of RNA and protein, exert vital influences on human wellbeing and ailments by sustaining equilibrium, managing growth and ageing, and producing energy. Apart from variations across cell types, organelle diversity also occurs within individual cells.
Using RNA-seq and through in vitro and in vivo studies, we determined that brusatol suppresses hepatocellular carcinoma progression by inducing ATF3-mediated ferroptosis. Therefore, our research revealed the biological effect of brusatol treatment and provided ATF3 as a novel therapeutic target and prognostic biomarker for HCC therapy.
FDA classifies it as a “nonsteroidal treatment” – not a gene therapy, but it affects gene expression. A gene-based treatment would have to alter many cells to exert a noticeable effect. In 2023, two gene-based treatments became available. Muscle makes up about 40 percent of body weight. million DNA bases.
By Leah Eisenstadt October 21, 2024 Credit: Kevin Middleton, Broad Communications In the Bhattacharyya lab, researchers develop methods to quickly identify the most appropriate treatments for bacterial infections. The findings appear in the Journal of Clinical Microbiology.
Since marketing authorization for the first breakthrough treatment in 1994, the steady increase in clinical trials reflects the community’s commitment to finding effective ALS treatments despite the numerous hurdles associated with clinical trial design, from proof-of-concept to pivotal trials. The MAA file in the E.U.
This second ELRIG meeting on Therapeutic Oligonucleotides brings together esteemed scientists from academia, industry, and other members of the drug discovery community to explore the discovery, validation, and targeting of oligonucleotide-based drug candidates, including antisense oligonucleotides (ASOs) and small interfering RNA (siRNA).
By: Simran Padam, Medical Director, Medical Affairs Personalized treatment approaches have emerged as pivotal in improving outcomes for hematological cancers. Hematological cancer cells can also develop resistance to therapies over time, reducing treatment effectiveness.
By Allessandra DiCorato June 18, 2024 Credit: Jon Arizti-Sanz SHINE, a rapid diagnostic test developed by Pardis Sabeti's lab in 2020, uses paper strips and CRISPR enzymes to identify specific sequences of viral RNA in samples.
Circular RNAs (circRNAs) are a unique kind of non-coding RNA and play an important regulatory role in OP. Expression of circ_0005753 in human BMSCs with MEL treatment, clinical specimens diagnosed with OP, either with ovariectomy (OVX)-induced mice, was measured by RT-qPCR.
A few years ago, at Arrakis Therapeutics, we set out to conquer a strange new territory, drugging RNA structures with small molecules. In fact, it was these early pharmaceutical successes that gave us the confidence that we would ultimately succeed in systematically drugging a wide range of RNA structures.
Androgen deprivation is the standard treatment for prostate cancer (PCa) patients. In this study, we used enzalutamide and metformin in combination to explore the possible rescued efficacy of enzalutamide in the treatment of ENZ-r CRPC. However, the disease eventually progresses as castration-resistant PCa (CRPC).
Targeted drug treatment leads tumor cells to imitate viral infection By Ari Navetta July 11, 2024 Breadcrumb Home Targeted drug treatment leads tumor cells to imitate viral infection Exploiting "viral mimicry," mIDH1 inhibitors trick tumors into thinking they are infected with a virus.
Toll-like receptor (TLR) 7 and TLR8 are single-stranded RNA-sensing endosomal pattern recognition receptors that evolved to defend against viral infections. New treatment approaches that allow for the use of lower and safer doses of GCs would be highly beneficial.
Remdesivir and other broad-spectrum antivirals work by jamming up RNA-dependent RNA polymerase (RdRp), an enzyme that nearly all RNA viruses use to replicate their genomes. Other efforts to build broad-spectrum antivirals have focused on another conserved feature of viruses: double-stranded RNA.
In this study, using RNA interference library screening, downstream anti-apoptotic molecular signaling components involved in CA-induced STC2-mediated protection against ethanol-induced apoptosis were investigated.
Through phylogenetic analysis and microscopy techniques, they identified a nuclear-encoded apicoplast RNA polymerase σ subunit called ApSigma. The study suggests that this regulatory system could be a potential target for future malaria treatments, offering hope for combatting this deadly disease that affects millions worldwide.
Scientists from the Massachusetts Institute of Technology (MIT) and the University of Massachusetts Medical School (UMass), US, have collaborated to create a novel type of nanoparticle that can deliver messenger RNA that encodes for beneficial proteins to the lungs.
Meanwhile, circular RNA (circRNA) circ_0001615 has been reported to be involved in the malignant development of CRC. The binding between miR-873-5p and circ_0001615, or LASP1, was predicted by Starbase, followed by verification by dual-luciferase reporter and RNA immunoprecipitation (RIP) assays.
Of note, sepiapterin might be a treatment option for patients who don’t typically respond to BioMarin’s sapropterin (Kuvan), as a phenylalanine reduction of 69% was seen in patients with classic phenylketonuria. Unlike sapropterin, sepiapterin is more active in cells and is also brain-penetrant.
Scientists discover small RNA that regulates bacterial infection People with weakened immune systems are at constant risk of infection. Their research findings, published in Nature, can inform the development of future treatments for life-threatening acute infections. They named the small RNA SicX (sRNA inducer of chronic infection X).
Consider aminergic GPCRs and kinases —while many drugs hit these proteins, they often affect more than one target, a phenomenon known as polypharmacology, leading to complex treatment profiles and side effects. Beyond Proteins: DNA and RNA Frontier The story doesn’t end with proteins.
Treatment with amitriptyline significantly protected mucosal injury by preserving the population of goblet cells and increasing the expression of tight junction proteins. Additionally, RNA sequencing analysis pointed to the potential involvement of the TLR pathway in the anti-colitic effects induced by amitriptyline.
Finally, we have an animal model with human-genetic validity and robust neurobiological overlap with human patients that can help scientists learn how existing treatments work and potentially help identify new ones,” said first author Zohreh Farsi, a staff scientist in the Sheng lab. “We
A common fatty acid may help restore healthy vaginal bacteria after infection By Ari Navetta August 19, 2024 Breadcrumb Home A common fatty acid may help restore healthy vaginal bacteria after infection Treatments using oleic acid, a naturally occurring oil used in cells, could improve treatment of recurrent bacterial vaginosis infections.
MiR-556-3p and Acyl-CoA synthetase long-chain family member 4 (ACSL4) interaction was confirmed via dual-luciferase reporter assay and RNA pull-down assay. Our study showed that BCL treatment alleviated OGD/R-induced SK-N-SH cell apoptosis, inflammation and ferroptosis.
In the 1924 novel, The Magic Mountain , Thomas Mann describes a sanatorium patient named Anton Ferge as he undergoes a painful tuberculosis (TB) treatment. Over time, the frequency of resistance gene variants in the population will continue increasing because only the bacteria lacking those variants will die with treatment.
By Leah Eisenstadt, Broad Communications October 23, 2024 Credit: Courtesy of the Broadbent family Brian and Julia Broadbent are raising their daughters Claire, top left, and Emma, seated, who is the first person to be diagnosed with a rare genetic disorder caused by the long noncoding RNA CHASERR.
Using single-cell RNA sequencing to analyze gene expression in individual cells, the researchers have found how 86 major cytokines affect 17 immune cell types in mice. For many immune-mediated diseases, there's no cure or treatment. Some patients develop resistance to treatment and we cannot predict who they will be.
RNA sequencing analysis was conducted to study the gene expression profiles of Formononetin-induced H1975_OR cells. However, the potentials and the mechanisms of Formononetin to counteract the Osimertinib resistance in NSCLC are unclear.
Triple Treatment Combo Beneficial in BRAF-Mutant CRC. Based on RNA profiling, treatment benefit was not dependent on previously established BRAF subgroups or the consensus molecular subtype. Professional. MONDAY, Dec. 23 in the Journal of Clinical Oncology. Scott Kopetz, M.D.,
Now Avidity Biosciences has developed a candidate drug that weds a monoclonal antibody (MAb) to a short piece of RNA – a small interfering RNA (siRNA). This novel class of RNA therapeutics is called Antibody Oligonucleotide Conjugates (AOCs™). Synthesizing a bit of RNA, Levin writes, is the simple part.
Messenger RNAs with multiple “tails” could lead to more effective therapeutics By Corie Lok March 22, 2024 Breadcrumb Home Messenger RNAs with multiple “tails” could lead to more effective therapeutics Scientists have engineered long lasting mRNAs that increased therapeutic protein production in cells and animals.
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