Page 23 - Eclipse - Autumn/Winter 2024

 

 

 

 

 

Page 23 - Eclipse - Autumn/Winter 2024
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RESEARCH NEWS

              RESEARCH NEWS










               study explores malaria


              invasion to help develop

              life-saving vaccine




                     esearchers from the  and the   Working with researchers from the   Dr Ellen Knuepfer, lecturer in
                     University of Oxford have led an   University of Oxford’s Higgins Laboratory,   Vaccinology and  lead on this
                     innovative project investigating    researchers, led by Dr Ellen   study, said: “Our study provided an
             Rthe progression of malaria          Knuepfer, used ‘structure-guided’   exciting opportunity to discover the
              infection and the role of the parasite to   molecular approaches to examine how   fundamentals of how malaria parasites
              better aid the development of an effective   PfRCR is assembled and functions as a   invade human red blood cells – a key
              malaria vaccine and significantly reduce   whole within Plasmodium parasites during   step in the parasite’s life cycle that can
              rates of deaths from the disease.   the invasion of RBCs.              be therapeutically targeted.
              The study, which was funded by      To date, the project has made huge   “Our results demonstrate that the
              the Wellcome Trust, observed the    breakthroughs in the development of   essential multi-protein PfRCR complex
              cycles of parasites invading red blood   effective vaccine targets to ward against   does not function to create a molecular
              cells (RBCs), replicating within them,   the contraction and progression of   pore in the red blood cell membrane but
              and then spreading to infect new RBCs.   malaria. This includes rationalising regions   rather as a molecular bridge, connecting
              From its observations, the project has   within PfRCR to function as therapeutic   the parasite to the red blood cell
              determined that during the invasion of   targets in helping to reduce rates of death   membrane during invasion. Excitingly,
              new RBCs by the parasite, a specialised   from the disease. However, work remains   new structural insights will help us to
              protein complex (PfRCR) is secreted   to be done to fully protect children against   rationally design therapeutics that target
              which forms a bridge for the parasite to   malaria and help eradicate the disease,   specific domains of this protein complex
              facilitate entry into the next RBC.  which remains one of the top 10 deadliest   and hinder its function.”
                                                  diseases in the world.



              Grant from                          The study team, led by Dirk Werling,   on a topic which affects us all, global
                                                  Professor of Molecular Immunology
                                                                                     warming, but in a way that both animals
              the Bezos                           and Director of the Centre for     and humans benefit from it.”
                                                  Vaccinology and Regenerative
                                                                                     Dr Andy Jarvis, Director of the Future
              Earth Fund                          Medicine, will establish the pattern of   of Food at the Bezos Earth Fund,
                                                  methanogenic archaea’s colonisation.
                                                                                     said: “This project represents a
                                                  To do this, they will collect blood,   moonshot in our efforts to reduce
                                                  saliva, ingesta and colostrum samples   livestock methane emissions. The
                    he  has been awarded       from Holstein-Friesian calves and their   potential to apply the proven success
                    a £1.2m grant from the        mothers. They will then analyse the   of vaccines in global health to cattle
                    Bezos Earth Fund to explore   samples to identify microbes and create   and significantly cut emissions is both
              Thow methane-producing              cultures that can be shared for further   ambitious and exciting.”
              microorganisms colonise the GI tract    analysis, as well as modifying and testing
              of calves in the first six weeks of life    the methanogen.
              and how they impact the developing   Professor Werling commented: “I am
              immune system.                      extremely proud of being part of this
              The research will provide vital information   project, which brings together colleagues
              on the optimal way to administer any   working in different fields of animal health
              potential vaccine to reduce methane   in a very unique way. I believe that the
              production from livestock, thus reducing   funding we obtained from Bezos Earth
              methane emissions.                  Fund will enable us to perform research
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