Ribosome profiling (Ribo-seq) measures ribosome density along messenger RNA (mRNA) transcripts and is used to estimate the "translational fitness" of a given mRNA in response to environmental or developmental cues with high resolution. Here, we describe a protocol for Ribo-seq in plants adapted for the model plant Arabidopsis thaliana. We describe steps for lysis and nucleolytic digestion and ribosome footprinting. We then detail library construction, sequencing, and data analysis.
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http://dx.doi.org/10.1016/j.xpro.2023.102520 | DOI Listing |
J Ren Nutr
January 2025
Division of Nephrology Universidade Federal de São Paulo, São Paulo, Brazil; Nutrition Program, Universidade Federal de São Paulo, São Paulo, Brazil. Electronic address:
Objective: To evaluate the associations between the quality of the diet and its components and microbial diversity and composition in peritoneal dialysis (PD) patients.
Design And Methods: This crossectional study included PD patients for at least 3 months, aged 18-75 years and clinically stable. The Diet Quality Index (DQI), validated for the Brazilian population, is based on the energy density of 11 components ("sugar and sweets"; "beef, pork and processed meat"; "refined grains and breads"; "animal fat"; "poultry, fish and eggs"; "whole cereals, tubers and roots"; "fruits"; "non-starch vegetables"; "legumes and nuts"; "milk and dairy products"; "vegetable oil").
Biochemistry
January 2025
Department of Developmental Biology and Genetics, Indian Institute of Science, Bengaluru 560012, India.
Eukaryotic Initiation Factor 4 (eIF4) is a group of factors that activates mRNA for translation and recruit 43S preinitiation complex (PIC) to the mRNA 5' end, forming the 48S PIC. The eIF4 factors include mRNA 5' cap-binding protein eIF4E, ATP-dependent RNA helicase eIF4A, and scaffold protein eIF4G, which anchors eIF4A and eIF4E. Another eIF4 factor, eIF4B, stimulates the RNA helicase activity of eIF4A and facilitates mRNA recruitment.
View Article and Find Full Text PDFObesity (Silver Spring)
January 2025
Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina, USA.
Objective: We assessed the impact of a food-provisioning intervention on diet quality in children with obesity.
Methods: Participants (n = 33, aged 6-11 years) were randomly assigned to either usual care (intensive health behavior and lifestyle treatment) or intervention (usual care + food provisioning; high-fiber, low-dairy diet) for 4 weeks. The primary outcome was a change in child diet quality at Week 4.
Neuron
January 2025
Department of Pathology and Cell Biology, Irving Cancer Research Center, Columbia University Irving Medical Center, New York, NY 10032, USA; Department of Neurological Surgery, Columbia University Irving Medical Center, New York, NY 10032, USA. Electronic address:
Gliomas are aggressive neoplasms that diffusely infiltrate the brain and cause neurological symptoms, including cognitive deficits and seizures. Increased mTOR signaling has been implicated in glioma-induced neuronal hyperexcitability, but the molecular and functional consequences have not been identified. Here, we show three types of changes in tumor-associated neurons: (1) downregulation of transcripts encoding excitatory and inhibitory postsynaptic proteins and dendritic spine development and upregulation of cytoskeletal transcripts via neuron-specific profiling of ribosome-bound mRNA, (2) marked decreases in dendritic spine density via light and electron microscopy, and (3) progressive functional alterations leading to neuronal hyperexcitability via in vivo calcium imaging.
View Article and Find Full Text PDFAm J Trop Med Hyg
January 2025
Institute of Global Health and Infectious Diseases, University of North Carolina, Chapel Hill, North Carolina.
Malaria rapid diagnostic tests (mRDTs) that detect histidine-rich protein 2 (HRP2) remain the mainstay of falciparum malaria diagnosis in Sub-Saharan Africa. Understanding their test characteristics when used for surveillance in asymptomatic populations is important. We explored the rate of false-positive and false-negative mRDT results among asymptomatic persons >5 years old screened for malaria at schools and clinics in the rural Bagamoyo District using 18S ribosomal RNA real-time polymerase chain reaction (qPCR) as the reference test.
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