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

Fill in the Blanks

Cytokines are classified predominantly based on their molecular structure (receptor families) and their

within innate and adaptive immunity.

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

Fill in the Blanks

Fill in the blank: IL-4 promotes B cell activation and differentiation, and induces class switch recombination to

.

Fill in the Blanks

Type I interferons (IFN-alpha, IFN-beta) primarily function to induce an

state in uninfected cells by inhibiting viral protein synthesis and replication.

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

Fill in the Blanks

The primary source of Type I interferons (IFN-α and IFN-β) is

dendritic cells.

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

Fill in the Blanks

Fill in the blank: Type III Interferon (IFN-λ) provides antiviral protection primarily at

barriers.

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

Fill in the Blanks

The process of inflammation is characterized by several cardinal signs. Fill in the blank: One of the cardinal signs of inflammation is

.

Open Ended

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