Cytokines

Open Ended

How do you think interferons contribute to the body's defense against infections?

Multiple Choice

Why do you think cytokines are significant in the immune system?

• They help in digestion

• They regulate immune responses

• They produce energy

• They store genetic information

Multiple Choice

Which of the following is a key property of cytokines that allows them to have multiple biological actions?

• Pleiotropism

• Chemotaxis

• Phagocytosis

• Opsonization

Multiple Choice

Which cytokine is primarily responsible for inducing fever and promoting the synthesis of acute-phase proteins by the liver during the immediate inflammatory response?

• Tumor Necrosis Factor-alpha (TNF-alpha)

• Interleukin-6 (IL-6)

• Interleukin-1 (IL-1)

• Chemokines (e.g., IL-8)

Multiple Choice

Which cytokine is primarily responsible for inducing the proliferation and activation of antigen-primed T lymphocytes?

• Interleukin-2 (IL-2)

• Interleukin-12 (IL-12)

• Interferon-gamma (IFN-gamma)

• Type I Interferons

Open Ended

Explain the process by which Th1 lymphocytes activate macrophages, as depicted in the diagram.

Multiple Select

Which of the following cytokines are classified as Th1 cytokines?

• IFN-γ

• IL-2

• IL-4

• IL-17

Multiple Choice

What is the main biological activity of Transforming Growth Factor-beta (TGF-beta) in immunity?

• Tissue repair and regulation

• Induction of fever

• Activation of neutrophils

• Stimulation of antibody production

Multiple Choice

Which cytokine is primarily responsible for suppressing the production of cytokines by macrophages and dendritic cells, thereby dampening T-cell activation?

• Interleukin-10 (IL-10)

• Interleukin-6 (IL-6)

• Interferon-gamma (IFN-γ)

• Tumor Necrosis Factor-alpha (TNF-α)

Multiple Select

Blocking which cytokines is a mainstay therapy for chronic inflammatory diseases like rheumatoid arthritis and psoriasis?

• TNF and IL-1

• IL-4 and IL-5

• IL-17 and IL-23

• IFN-γ and IL-6

Open Ended

Explain how cytokines can be grouped to simplify their study and recall. Provide an example from the slides.

Multiple Choice

Which of the following is NOT a key antiviral role of Type I interferons?

• Induce the antiviral state

• Inhibit viral protein synthesis

• Stimulate antibody production

• Cell cycle arrest

Multiple Choice

Which of the following is a key immune activation role of IFN-γ?

• Localized antiviral defense at mucosal barriers

• Promotion of antibody isotype switching

• Immediate defense against viruses

• Induction of systemic inflammation

Multiple Choice

Which cells are the primary source of Type II Interferon (IFN-γ)?

• Th1 cells and NK cells

• Epithelial cells

• B cells

• Macrophages

Multiple Choice

Which IFN type is clinically relevant for boosting immunity in Chronic Granulomatous Disease?

• Type I alpha, beta

• Type II gamma

• Type III lambda

• Type IV delta

Open Ended

Reflecting on today's lesson about cytokines, which aspect of their role in the immune response would you like to explore further?