Immunotherapy Flashcards
4 parts of the holy grail
cytokines
vaccines
tumor infiltrating lymphocytes (tils)
Antibodies to tumor specific antigens
Problems with TILs and Gene (IL-2) Transfer
expensive and complex, anergy
Rituximab
Chimeric antibody against CD20, membrane protein of B lymphocytes
Rituximab induces….
antibody dependent cellular cytotoxicity (ADCC) and complement dependent cytotoxicity (CDC)
What is Rituximab useful for?
B cell malignancy and auto immune disease
RCHOP
Hodgkin’s Lymphoma ( I think…)
Anti-CD20
Ofatumumab
Obinutuzumab
Outperform rituximab - low grade lymphomas
blockade of the inhibitory effects of CTLA-4 can allow for and potentiate…
immune response against tumor cells
B7 to CTLA-4
Off switch, blocks B7 and CD28
Ipilimumab
blocks B7 and CTLA-4. Turns off the off switch. Dendritic cells and T cells interact. Activation
Side effects of CTLA-4 blockade?
colitis
rash
endocrinopathies
pulmonary toxicity
PD1 and PD1 ligand
another off switch, surpresses T cell activation
Advantage to PD1
kinder, less side effects
What if you block PD-1 and PD1 ligand?
T cell can be activated and attack tumor cell
What types of cancer is PD1 and PD1 ligand blockade effective in?
mismatch repair and mutations of high genetic variation