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
Side effects of PD1 blockade?
Skin (rash), colitis and thyroid problems