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Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
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Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
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Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
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Related Experiment Video

Updated: Feb 4, 2026

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Arid5a makes the IL-17A/F-responsive pathway less arid.

Anne Puel1,2,3, Jean-Laurent Casanova4,2,3,5,6

  • 1Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM UMR 1163, Necker Hospital for Sick Children, 75015 Paris, France. anne.puel@inserm.fr.

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The RNA binding protein Arid5a enhances immune responses to interleukin-17A/F (IL-17A/F), a cytokine involved in both host defense and autoimmune diseases. This study reveals Arid5a’s crucial role in modulating IL-17A/F signaling pathways.

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Area of Science:

  • Immunology
  • Molecular Biology
  • Cellular Signaling

Background:

  • Interleukin-17A/F (IL-17A/F) is a critical cytokine for mucosal immunity against pathogens like *Candida albicans*.
  • Dysregulated IL-17A/F signaling is implicated in autoimmune and autoinflammatory conditions.
  • Understanding the regulation of IL-17A/F responses is vital for therapeutic development.

Purpose of the Study:

  • To investigate the role of the RNA binding protein Arid5a in regulating IL-17A/F responses.
  • To elucidate the mechanisms by which Arid5a influences IL-17A/F signaling.
  • To explore the implications of Arid5a in IL-17A/F-mediated immunity and inflammation.

Main Methods:

  • Utilized mouse models and cell-based assays.
  • Investigated the interaction between Arid5a and IL-17A/F signaling components.
  • Employed techniques such as RNA immunoprecipitation and gene expression analysis.

Main Results:

  • Demonstrated that Arid5a promotes cellular responses to IL-17A/F.
  • Identified multiple mechanisms through which Arid5a modulates IL-17A/F signaling.
  • Showcased Arid5a's contribution to both protective immunity and potentially detrimental inflammation.

Conclusions:

  • Arid5a is a key regulator of IL-17A/F signaling.
  • Arid5a's multifaceted role highlights its importance in immune homeostasis.
  • Targeting Arid5a may offer therapeutic strategies for IL-17A/F-related diseases.