Related Experiment Video
Updated: Jun 5, 2026
09:38
Identification of Nucleolar Factors During HIV-1 Replication Through Rev Immunoprecipitation and Mass Spectrometry
Published on: June 26, 2019
Hantavirus protein interactions regulate cellular functions and signaling responses.
1Centre for Microbiological Preparedness, Swedish Institute for Infectious Disease Control, Solna, Sweden. jonas.klingstrom@smi.ki.se
Expert Review of Anti-Infective Therapy
|December 22, 2010
Summary
Rodent-borne hantaviruses cause severe diseases like hemorrhagic fever with renal syndrome (HFRS) and hantavirus cardiopulmonary syndrome (HCPS). Understanding hantavirus immune responses and cellular interference is key to developing new treatments and vaccines.
Area of Science:
- Virology
- Immunology
- Infectious Diseases
Background:
- Hantaviruses are rodent-borne viruses causing severe zoonotic diseases: HFRS in Eurasia and HCPS in the Americas.
- Current therapeutic and vaccine options approved by the US FDA are unavailable for HFRS/HCPS.
- The non-lytic nature of hantavirus infections and the precise mechanisms of human disease pathogenesis remain largely unknown.
Purpose of the Study:
- To review current knowledge on immune responses in hantavirus-infected patients.
- To explore how hantaviruses interfere with cellular functions and signaling pathways.
- To discuss potential therapeutic development strategies against hantavirus infections.
Main Methods:
- Review of existing literature on hantavirus immunology and cell biology.
- Analysis of immune responses observed in clinical cases of HFRS and HCPS.
- Examination of studies detailing hantavirus interactions with host cellular proteins and signaling cascades.
Main Results:
- Hantavirus infections trigger complex immune responses, but their precise role in disease severity is not fully elucidated.
- Evidence suggests hantaviruses actively interfere with host cell functions and signaling pathways to promote infection and evade immunity.
- Understanding these interactions provides a basis for identifying potential therapeutic targets.
Conclusions:
- Further research into hantavirus-induced immune responses and cellular interference mechanisms is crucial.
- Elucidating these pathways may lead to the development of novel antiviral therapeutics and vaccines.
- Targeting host-virus interactions offers a promising avenue for combating severe hantavirus diseases.
Related Concept Videos
01:19Interactions Between Signaling Pathways
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
01:20The JAK-STAT Signaling Pathway
Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as SH2...
01:22Amplifying Signals via Enzymatic Cascade
When a ligand binds to a cell-surface receptor, the receptor's intracellular domain changes shape, which may either activate its enzyme function or allow its binding to other molecules. The initial signal is amplified by most signal transduction pathways. This means that a single ligand molecule can activate multiple molecules of a downstream target. Proteins that relay a signal are most commonly phosphorylated at one or more sites, activating or inactivating the protein. Kinases catalyze the...
01:24Regulation of Angiogenesis and Blood Supply
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
01:30Inhibitors of Viral Protein Synthesis
Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
02:41Protein Complex Assembly
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell to...