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Ionotropic receptors mediate olfactory learning and memory in Drosophila

Insect Science 2024年第4期31卷 1249-1269页

作者： Md Zeeshan Ali Anushree Aarif Ahsan Mohammad Shamsul Ola rizwanul haque Jawaid Ahsan Department of Biotechnology Central University of South BiharGayaBiharIndia Department of Radiation Oncology University of MichiganAnn ArborMichiganUSA Department of Biochemistry College of ScienceKing Saud UniversityRiyadhSaudi Arabia

Phenylacetaldehyde(PAH),an aromatic compound,is present in a diverse range of fruits including overripe bananas and prickly pear cactus,the two major host fruits for Drosophila *** acts as a potent ligand for the ionotropic receptor 84a(IR84a)in the adult fruit fly and it is detected by the IR84a/IR8a heterotetrameric *** role in the male courtship behavior through IR84a as an environmental aphrodisiac is of additional *** ***,two distinct kinds of olfactory receptors,that is,odorant receptors(ORs)and ionotropic receptors(IRs),perceive the odorant *** display unique structural,molecular,and functional characteristics in addition to having different evolutionary ***,olfactory cues detected by the ORs such as ethyl acetate,1-butanol,isoamyl acetate,1-octanol,4-methylcyclohexanol,*** as aliphatic esters and alcohols have been employed in olfactory classical conditioning using fruit *** underlines the participation of OR-activated olfactory pathways in learning and memory *** study elucidates that likewise ethyl acetate(EA)(an OR-responsive odorant),PAH(an IR-responsive aromatic compound)too can form learning and memory when associated with an appetitive gustatory *** association of PAH with sucrose(PAH/SUC)led to learning and formation of the long-term memory(LTM).Additionally,the Orco^(1),Ir84a^(MI00501),and Ir8a^(1)mutant flies were used to confirm the exclusive participation of the IR84a/IR8a complex in PAH/SUC olfactory associative *** results highlight the involvement of IRs via an IR-activated pathway in facilitating robust olfactory behavior.

关键词： appetitive conditioning Drosophila melanogaster ethyl acetate ionotropic receptors learning and memory phenylacetaldehyde

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Intracellular Signals of T Cell Costimulation

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Cellular & Molecular Immunology 2008年第4期5卷 239-247页

作者： Fengyang Tylan Lei rizwanul haque Department of Microbiology and Immunology and Penn State Cancer Institute the Pennsylvania State University College of Medicine500 University DrHersheyPA 17033USA

Ligation of T cell receptor （TCR） alone is insufficient to induce full activation of T lymphocytes. Additional ligand-receptor interactions （costimulation） on antigen presenting cells （APCs） and T cells are required. T cell costimulation has been shown to be essential for eliciting efficient T cell responses, involving all phases during T cell development. However, the mechanisms by which costimulation affects the function of T cells still need to be elucidated. In recent years, advances have been made in studies of costimulation as potential therapies in cancer, infectious disease as well as autoimmune disease. In this review, we discussed intracellular costimulation signals that regulate T cell proliferation, cell cycle progression, cytokine production, survival, and memory development. In general, the pathway of phosphoinositide-3 kinase （PI3K）/protein kinase B （PKB, also known as Akt）/nuclear factor κB （NF-κB） might be central to many costimulatory effects. Through these pathways, costimulation controls T-cell expansion and proliferation by maintenance of survivin and aurora B expression, and sustains long-term T-cell survival and memory development by regulating the expression of bcl-2 family members. Cellular ＆ Molecular Immunology. 2008;5（4）：239-247.

关键词： costimulation signal transduction T-cell development

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Mesenchymal stem cell-derived exosomes:Shaping the next era of stroke treatment

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Neuroprotection 2023年第2期1卷 99-116页

作者： Arshi Waseem Saudamini rizwanul haque Miroslaw Janowski Syed S.Raza Laboratory for Stem Cell&Restorative Neurology Department of BiotechnologyEra's Lucknow Medical College HospitalEra UniversitySarfarazganjLucknowIndia Department of Biotechnology Central University of South BiharGayaIndia Center for Advanced Imaging Research Department of Diagnostic Radiology and Nuclear MedicineUniversity of MarylandBaltimoreMarylandUSA Department of Stem Cell Biology and Regenerative Medicine Era's Lucknow Medical College HospitalEra UniversitySarfarazganjLucknowIndia

Exosome-based treatments are gaining traction as a viable approach to addressing the various issues faced by an ischemic *** extracellular vesicles,mainly produced by mesenchymal stem cells,exhibit many properties with substantial therapeutic *** are particularly appealing for stroke therapy because of their low immunogenicity,effective cargo transport,and ability to cross the blood–brain *** diverse effects include neuroprotection,angiogenesis stimulation,inflammatory response modulation,and cell death pathway attenuation,synergistically promoting neuronal survival,tissue regeneration,and functional *** also show potential as diagnostic indicators for early stroke identification and customized treatment *** these promising qualities,current exosome-based therapeutics have some *** heterogeneity of exosome release among cell types,difficulty in standardization and isolation techniques,and complications linked to dosage and targeted administration necessitates extensive *** is critical to thoroughly understand exosomal processes and their complicated interactions within the cellular *** improve the practicality and efficacy of exosome-based medicines,research efforts must focus on improving production processes,developing robust evaluation criteria,and developing large-scale isolation ***,exosomes’multifunctional properties offer a new route for transforming stroke treatment and significantly improving patient outcomes.

关键词： exosomes inflammatory stress ischemic stroke mesenchymal stem cells middle cerebral artery occlusion oxidative stress

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