Podcast
Questions and Answers
Which process is employed to generate a diverse repertoire of both B cells and T cells?
Which process is employed to generate a diverse repertoire of both B cells and T cells?
What is the purpose of this afternoon's lecture?
What is the purpose of this afternoon's lecture?
Which cells undergo BTJ recombination?
Which cells undergo BTJ recombination?
Is knowledge of detailed molecular biology required for this lecture?
Is knowledge of detailed molecular biology required for this lecture?
Signup and view all the answers
What is the process called that occurs in B cells and further diversifies them?
What is the process called that occurs in B cells and further diversifies them?
Signup and view all the answers
What process is responsible for selecting the best B cells to identify and recognize an antigen?
What process is responsible for selecting the best B cells to identify and recognize an antigen?
Signup and view all the answers
Which part of the B cell receptor is modified during class switch recombination?
Which part of the B cell receptor is modified during class switch recombination?
Signup and view all the answers
What is the purpose of BTJ recombination in ensuring recognition of antigens?
What is the purpose of BTJ recombination in ensuring recognition of antigens?
Signup and view all the answers
Which enzyme catalyzes the rearrangement of the germline sequence in the T cell receptor?
Which enzyme catalyzes the rearrangement of the germline sequence in the T cell receptor?
Signup and view all the answers
What is the purpose of somatic host mutation in B cells?
What is the purpose of somatic host mutation in B cells?
Signup and view all the answers
What are the specific sites on the DNA where rearrangement occurs called?
What are the specific sites on the DNA where rearrangement occurs called?
Signup and view all the answers
What is the purpose of terminal deoxy transferase in the rearrangement process?
What is the purpose of terminal deoxy transferase in the rearrangement process?
Signup and view all the answers
Which type of immunoglobulin is needed when the antigen is in the bloodstream?
Which type of immunoglobulin is needed when the antigen is in the bloodstream?
Signup and view all the answers
What is the process called when immune globulin binds to a pathogen to flag it to a macrophage?
What is the process called when immune globulin binds to a pathogen to flag it to a macrophage?
Signup and view all the answers
Which part of the B cell receptor is altered during class switch recombination?
Which part of the B cell receptor is altered during class switch recombination?
Signup and view all the answers
What enzyme is critical in both somatic hypermutation and class switch recombination?
What enzyme is critical in both somatic hypermutation and class switch recombination?
Signup and view all the answers
What is the process called when B cells introduce random genetic alterations in their B cell receptor followed by antigenic challenge?
What is the process called when B cells introduce random genetic alterations in their B cell receptor followed by antigenic challenge?
Signup and view all the answers
What happens to B cells that do not recognize the antigen better after somatic hypermutation?
What happens to B cells that do not recognize the antigen better after somatic hypermutation?
Signup and view all the answers
Where does somatic hypermutation and affinity maturation primarily take place?
Where does somatic hypermutation and affinity maturation primarily take place?
Signup and view all the answers
What happens to B cells that recognize the antigen with higher affinity after somatic hypermutation?
What happens to B cells that recognize the antigen with higher affinity after somatic hypermutation?
Signup and view all the answers
Which of the following best describes the purpose of the molecular cutting and shutting off the immune globulin?
Which of the following best describes the purpose of the molecular cutting and shutting off the immune globulin?
Signup and view all the answers
What is the relationship between the IG M or MU locus and the IG locus?
What is the relationship between the IG M or MU locus and the IG locus?
Signup and view all the answers
What drives or guides the class switch recombination event?
What drives or guides the class switch recombination event?
Signup and view all the answers
Why does class switch recombination matter?
Why does class switch recombination matter?
Signup and view all the answers
What is the main goal of achieving a better molecule or molecular structure?
What is the main goal of achieving a better molecule or molecular structure?
Signup and view all the answers
Which region of the immune globulin molecule is good at neutralizing and optimizing?
Which region of the immune globulin molecule is good at neutralizing and optimizing?
Signup and view all the answers
What is the enzyme predominantly used for introducing mutations in B cells?
What is the enzyme predominantly used for introducing mutations in B cells?
Signup and view all the answers
What is the mutation rate at the immunoglobulin loci compared to other loci in the genome?
What is the mutation rate at the immunoglobulin loci compared to other loci in the genome?
Signup and view all the answers
What is the purpose of somatic hypermutation in B cells?
What is the purpose of somatic hypermutation in B cells?
Signup and view all the answers
What is the specific base that is mutated in somatic hypermutation?
What is the specific base that is mutated in somatic hypermutation?
Signup and view all the answers
Which enzyme is responsible for catalyzing the rearrangement of the germline sequence in the T cell receptor?
Which enzyme is responsible for catalyzing the rearrangement of the germline sequence in the T cell receptor?
Signup and view all the answers
What is the primary purpose of V(D)J recombination?
What is the primary purpose of V(D)J recombination?
Signup and view all the answers
Which segments of the immune cell receptor genes are involved in V(D)J recombination?
Which segments of the immune cell receptor genes are involved in V(D)J recombination?
Signup and view all the answers
How many possible combinations of immune cell receptor sequences can be generated through V(D)J recombination?
How many possible combinations of immune cell receptor sequences can be generated through V(D)J recombination?
Signup and view all the answers
Which Recombination Activating Genes (RAGs) are critical for the cleavage stage of V(D)J joining?
Which Recombination Activating Genes (RAGs) are critical for the cleavage stage of V(D)J joining?
Signup and view all the answers
Which specific sites on the DNA are involved in rearrangement during V(D)J joining?
Which specific sites on the DNA are involved in rearrangement during V(D)J joining?
Signup and view all the answers
What is the purpose of terminal deoxynucleotidyl transferase (Tdt) in V(D)J rearrangement?
What is the purpose of terminal deoxynucleotidyl transferase (Tdt) in V(D)J rearrangement?
Signup and view all the answers
Which type of immune cell undergoes VJ recombination?
Which type of immune cell undergoes VJ recombination?
Signup and view all the answers
Where does somatic hypermutation and affinity maturation primarily take place?
Where does somatic hypermutation and affinity maturation primarily take place?
Signup and view all the answers
What is the purpose of antibody class switching?
What is the purpose of antibody class switching?
Signup and view all the answers
Which cells are subject to Darwinian selection resulting in a 'better' B cell for specific antigen recognition and response?
Which cells are subject to Darwinian selection resulting in a 'better' B cell for specific antigen recognition and response?
Signup and view all the answers
What is the process by which B cells produce antibodies with increased affinity for antigen during an immune response?
What is the process by which B cells produce antibodies with increased affinity for antigen during an immune response?
Signup and view all the answers
What is the enzyme responsible for introducing point mutations during somatic hypermutation?
What is the enzyme responsible for introducing point mutations during somatic hypermutation?
Signup and view all the answers
What is the first targeted switch region in class switch recombination?
What is the first targeted switch region in class switch recombination?
Signup and view all the answers
What determines the partner switch region in class switch recombination?
What determines the partner switch region in class switch recombination?
Signup and view all the answers
What is the main goal of somatic hypermutation and affinity maturation?
What is the main goal of somatic hypermutation and affinity maturation?
Signup and view all the answers
What is the purpose of class switch recombination?
What is the purpose of class switch recombination?
Signup and view all the answers
What is the mutation rate during somatic hypermutation compared to normal cell division?
What is the mutation rate during somatic hypermutation compared to normal cell division?
Signup and view all the answers
What is the enzyme critical for both somatic hypermutation and class switch recombination?
What is the enzyme critical for both somatic hypermutation and class switch recombination?
Signup and view all the answers
What is the purpose of affinity maturation?
What is the purpose of affinity maturation?
Signup and view all the answers
What is the primary goal of somatic hypermutation and affinity maturation?
What is the primary goal of somatic hypermutation and affinity maturation?
Signup and view all the answers
What is the role of follicular dendritic cells in affinity maturation?
What is the role of follicular dendritic cells in affinity maturation?
Signup and view all the answers
What is the mutation rate during somatic hypermutation compared to normal cell division?
What is the mutation rate during somatic hypermutation compared to normal cell division?
Signup and view all the answers
What is the purpose of class switch recombination?
What is the purpose of class switch recombination?
Signup and view all the answers
What determines the partner switch region in class switch recombination?
What determines the partner switch region in class switch recombination?
Signup and view all the answers
What happens to B cells that have undergone somatic hypermutation but bind antigens with lower affinity?
What happens to B cells that have undergone somatic hypermutation but bind antigens with lower affinity?
Signup and view all the answers
What is the role of activation-induced cytidine deaminase (AID) in class switch recombination?
What is the role of activation-induced cytidine deaminase (AID) in class switch recombination?
Signup and view all the answers
What happens to B cells that do not recognize the antigen better after somatic hypermutation?
What happens to B cells that do not recognize the antigen better after somatic hypermutation?
Signup and view all the answers
What is the relationship between somatic hypermutation and affinity maturation?
What is the relationship between somatic hypermutation and affinity maturation?
Signup and view all the answers
What is the purpose of introducing genetic alterations in B cell receptors during somatic hypermutation?
What is the purpose of introducing genetic alterations in B cell receptors during somatic hypermutation?
Signup and view all the answers