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Tiny brain bubbles carry complete codes

Scientists discovered that tiny brain bubbles called small extracellular vesicles carry more complete instructions for altering cellular function than previously thought. Researchers found nearly 80% of identified mRNAs were full-length, allowing them to be transcribed by recipient cells into viable proteins.

SourceSanford Burnham Prebys·JournalCell Reports·TypeExperimental study·DateApr 8, 2024

Chinese Medical Journal article unveils metabolic strategies to enhance CAR-T cell therapy

Researchers unveil innovative strategies to overcome metabolic constraints in CAR-T cell therapy, aiming to boost its efficacy in treating solid tumors. Metabolic interventions targeting immunosuppressive metabolites, metabolite uptake, and mitochondrial metabolism are proposed to enhance anti-tumor activity.

SourceCactus Communications·JournalChinese Medical Journal·TypeSystematic review·DateMar 26, 2024

Insulin affects the recycling of cellular power plants

In nerve cells, insulin facilitates the elimination of defective mitochondria when energy is available. However, during energy scarcity or disrupted insulin signaling, mitochondrial recycling is reduced, allowing potentially damaged power plants to continue operating. This process affects ageing processes and neurological diseases.

SourceMax-Planck-Gesellschaft·JournalNature Metabolism·DateMar 19, 2024

Study identifies molecular alterations in brain tissue and blood of people who committed suicide

Researchers analyzed molecular data from brain tissue and blood of individuals who committed suicide, identifying risk markers for novel therapeutic targets. The study found alterations in the prefrontal cortex and inhibitory neurotransmitters, highlighting potential new approaches for preventing suicidal behavior.

Optimizing boosters: How COVID mRNA vaccines reshape immune memory after each dose

Researchers found that T cells can reshape their memory and maintain diversity against COVID-19 variants in response to successive mRNA vaccinations. The study revealed a shift among clonotypes, with a change from early responders to main responders after the second shot, suggesting a new dominant population of effector-memory T cells.

SourceTokyo University of Science·JournalCell Reports·TypeExperimental study·DateMar 8, 2024

Photosynthetic secrets come to light

Researchers at John Innes Centre used cryo-EM to visualize the structural architecture of chloroplast RNA polymerase and build a detailed atomic model. The study reveals new insights into transcription, a fundamental step in making photosynthetic proteins, and how these proteins interact with DNA and mRNA.

SourceJohn Innes Centre·JournalCell·DateMar 4, 2024

Precision pulmonary medicine: Penn engineers target lung disease with lipid nanoparticles

Researchers at the University of Pennsylvania have developed a new method to efficiently determine which lipid nanoparticles are likely to bind to the lungs, rather than the liver. This breakthrough enables targeted delivery of mRNA therapeutics beyond the liver, offering new hope for treatments of cystic fibrosis and lung cancer.

SourceUniversity of Pennsylvania School of Engineering and Applied Science·JournalNature Communications·TypeExperimental study·DateMar 1, 2024

New assay identifies clinically relevant gene fusions in pediatric tumors more accurately and efficiently

Researchers developed a novel assay that integrates data from four fusion callers to identify disease-related gene fusions in pediatric tumors with high accuracy and efficiency. The new bioinformatics platform detected fusions, prioritized them, and custom curated downstream processes for consensus fusion calling.

SourceElsevier·JournalJournal of Molecular Diagnostics·TypeExperimental study·DateFeb 13, 2024

Mapping cell behaviors in high-grade glioma to improve treatment

Researchers have identified regional biological signatures in invasive brain tumor margins of high-grade glioma, which could lead to improved diagnosis, prognosis, and treatment. Advanced MRI techniques may help distinguish between the genetic and molecular alterations, providing insights into resistance to treatment.

SourceMayo Clinic·JournalNature Communications·DateJan 30, 2024

RNA sequencing analysis may hold the key to more accurate diagnosis and targeted treatment of pediatric B-acute lymphoblastic leukemia

A pilot study proposes a promising global genomic assay for diagnosing molecular subtypes in pediatric B-ALL, leading to more accurate diagnosis and targeted treatment options. RNA sequencing analysis accurately identified subtypes in all known cases and determined genetic subtype in 79% of previously unknown cases.

SourceElsevier·JournalJournal of Molecular Diagnostics·TypeExperimental study·DateJan 29, 2024

Study helps explain why stress in adolescence can lead to predisposition to mental illness in adulthood

A study in rats found that excessive adolescent stress alters genes associated with energy metabolism, leading to behavioral problems and psychiatric disorders in adulthood. The prefrontal cortex's response to stress was also affected, suggesting a link between mitochondrial function and emotional regulation.

Researchers develop prime editors using Cas12a and circular RNAs in human cells

Scientists have created a new generation of prime editors based on the Cas12a protein and circular RNAs, expanding the scope of precision genome editing. The new editors show high editing efficiencies and low off-target effects, paving the way for diverse applications in biological research, disease treatment, and crop breeding.

SourceChinese Academy of Sciences Headquarters·JournalNature Biotechnology·TypeExperimental study·DateJan 10, 2024

Researchers map how measles virus spreads in human brain

Mayo Clinic researchers used genetic sequencing to study the measles virus's spread in a human brain. The study found that the virus acquired distinct mutations that drove its spread from the frontal cortex outward. This knowledge may help develop effective antiviral drugs to combat SSPE, a rare and lethal brain disease caused by measles.

SourceMayo Clinic·JournalPLOS Pathogens·DateDec 21, 2023

University of Toronto researchers discover new lipid nanoparticle that shows muscle-specific mRNA delivery, reduces off-target effects.

Researchers at the University of Toronto have discovered a novel ionizable lipid nanoparticle that enables efficient muscle-focused mRNA delivery while minimizing off-target effects. The study demonstrates potent cellular immune responses and potential as a viable candidate for cancer vaccine development.

SourceUniversity of Toronto - Leslie Dan Faculty of Pharmacy·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateDec 8, 2023

Where DNA copying into RNA starts could determine whether cancer cells are receptive to treatment

Researchers found that cancer cells are more vulnerable to radiotherapy when using the less common 'YC' first-base-cytosine site instead of the usual 'YR' adenine or guanine start sites. This discovery enables further understanding of gene regulation in cancers and potential targets for treatment.

SourceUniversity of Birmingham·JournalNature Structural & Molecular Biology·TypeComputational simulation/modeling·DateNov 23, 2023

Gene splicing reduces effectiveness of CD20-targeting monoclonal antibodies designed to treat variety of blood cancers and disorders

Researchers at Children's Hospital of Philadelphia found that gene splicing can reduce CD20 protein levels, making immunotherapies ineffective. However, CAR-T cell therapy may still be effective against patients with low CD20 levels, offering a new treatment option for these patients.

SourceChildren's Hospital of Philadelphia·JournalBlood·TypeExperimental study·DateNov 16, 2023

New strategy attacks treatment-resistant lymphomas

Researchers at Weill Cornell Medicine have discovered a new mechanism that makes some cancers treatment-resistant, involving the shuttling of messenger RNAs from the nucleus to the cytoplasm. The approach targets this mechanism with a combination of approved chemotherapies, showing promise in treating persistent cases.

SourceWeill Cornell Medicine·JournalCancer Research·DateNov 2, 2023

mRNA delivered by extracellular vesicles induces immunotherapy response in glioblastoma

Researchers developed a novel method using extracellular vesicles to deliver mRNA for cancer therapy, overcoming challenges of accurate targeting and production. The approach shows promise for treating hard-to-treat tumor types by reversing immunosuppressive environments and making tumors detectable to the immune system.

SourceUniversity of Texas M. D. Anderson Cancer Center·JournalNature Communications·TypeExperimental study·DateOct 19, 2023