Types of Immune Cell Receptors

The video tutorial by Professor Dave covers the various types of immune cell surface receptors, focusing on five main categories: antigen receptors, costimulatory receptors, inhibitory receptors, cytokine receptors, and chemokine receptors. Each category is explained in detail, highlighting their roles in immune response, such as recognizing pathogens, requiring costimulation for activation, regulating immune responses, and facilitating cell communication. The tutorial emphasizes the complexity and specificity of these receptors in maintaining immune system balance.

What is the primary function of pattern recognition receptors (PRRs) in immune cells?

• To promote cell apoptosis

• To inhibit immune cell activation

• To recognize pathogen-associated molecular patterns

• To bind to specific antigens

How do antigen-specific lymphocyte receptors differ from pattern recognition receptors?

• They are germline encoded

• They recognize a broad range of antigens

• They are generated through genetic rearrangement

• They bind to DAMPs

Which receptor on T cells is crucial for receiving costimulatory signals from antigen-presenting cells?

• CD28

• CTLA-4

• RIG-I

• PD-1

What is the role of ICOS in T cells?

• To recognize PAMPs

• To prepare CD4 T cells to help B cells

• To bind to PDL1

• To inhibit T cell activation

Which inhibitory receptor on T cells competes with CD28 for binding to CD80 or CD86?

• CTLA-4

• ICOS

• PD-1

• CD40

What is the function of cytokines in the immune system?

• To bind to specific antigens

• To guide immune cells to infection sites

• To communicate between immune cells

• To inhibit immune cell growth

How do chemokines assist immune cells?

• By promoting cell apoptosis

• By guiding them to sites of infection or damage

• By inhibiting cytokine production

• By binding to PAMPs