Monoclonal antibodies basics Flashcards
monoclonal antibodies can be used to
- track disease
- used to find cancer cells
- used to switch on the immune system
most antigens carry many
epitopes
epitopes
binding sites for paratope (antigen binding site)
animals injected with a single antigen
will produce a complex mixture of antibodies for the many different epitopes
each antibody will be produced by
a different clone of B cell
a response where many different antibodies are produced for a single antigen
polyclonal antibody response
polyclonal antibody response will not
discriminate between different antigens
to discriminate between different antigens
antibodies need to be identified that bind to epitopes specific to individual anitgens
antigens will have epitopes that are
specific to that antigen and are not found on onthers
specific epitopes of antigens produce a
monoclonal antibody response
monoclonal antibodies do not
cross react with conserved epitopes
need to find B cells which
produce antibodies that are specific to antigens
two ways of creating monoclonal antibodies
- hybridisation
- phage display
uses of monoclonal antibodies
widespread:
- diagnostic pathology
- in vitro diagnostics
- affinity purification and characterisation of antigens
diagnostic pathology
cytology and histology
- can identify cancerous cells