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FUNDAMENTALS OF IMMUNOLOGY (AS INFORMED BY MICROBIAL PATHOGENS)

Microbiology 375. FUNDAMENTALS OF IMMUNOLOGY (AS INFORMED BY MICROBIAL PATHOGENS). COURSE INSTRUCTORS: DR. JOHN MANSFIELD PROFESSOR OF BACTERIOLOGY and MEDICAL MICROBIOLOGY & IMMUNOLOGY DR. JULIA GILDEN POSTDOCTORAL FELLOW DEPARTMENT OF MEDICAL MICROBIOLOGY & IMMUNOLOGY.

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FUNDAMENTALS OF IMMUNOLOGY (AS INFORMED BY MICROBIAL PATHOGENS)

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  1. Microbiology 375 FUNDAMENTALS OF IMMUNOLOGY(AS INFORMED BY MICROBIAL PATHOGENS)

  2. COURSE INSTRUCTORS: • DR. JOHN MANSFIELD • PROFESSOR OF BACTERIOLOGY and • MEDICAL MICROBIOLOGY & IMMUNOLOGY • DR. JULIA GILDEN • POSTDOCTORAL FELLOW • DEPARTMENT OF MEDICAL MICROBIOLOGY & • IMMUNOLOGY

  3. WHY HAVE WE DEVELOPED THISCOURSE? • EXPOSE CURIOUS UNDERGRADUATES TO IMPORTANT ASPECTS OF HUMAN HEALTH AND INFECTIOUS DISEASE • PROVIDE AN UNDERSTANDING OF HOW THE IMMUNE SYSTEM WORKS AND WHY WE BECOME ILL FROM MICROBIAL INFECTIONS • RAISE AWARENESS OF GLOBAL IMPACT OF DISEASES

  4. EXPOSURE TO DISEASES ONCE THOUGHT TO BE EXOTIC, GEOGRAPHICALLY ISOLATED AND ONLY PRESENT IN OTHER SOCIETALCULTURES MONKEYPOX

  5. Smallpox Vaccination An Ethiopian baby receives a smallpox vaccination in the mid-1970s, during the latter stages of the World Health Organization's (WHO) eradication effort. By 1980, WHO recommended that countries discontinue vaccination (WHY?).

  6. WE’LL DISCUSS POPULAR PERCEPTIONS AND POPULAR PRESS ARTICLES THAT ADDRESS IMMUNOLOGY AND HUMAN DISEASE Also see Penn and Teller “Bullsh*t” Episode on Vaccines

  7. WHAT IS THE CLASS FORMAT? • FORMAL LECTURES • CLASS DISCUSSIONS

  8. COURSE OUTLINE WEEK 1-OVERVIEW: EVOLUTION OF IMMUNE SYSTEM STRUCTURE AND FUNCTION; CO-EVOLUTION BY MICROBIAL PATHOGENS OF MECHANISMS TO DEFEAT HOST IMMUNITY WEEK 2-INNATE IMMUNITY: THE FIRST LINE OF DEFENSE AGAINST INFECTION, AND HOW MICROBIAL PATHOGENS ESCAPE FROM BEING RECOGNIZED WEEK 3-ADAPTIVE IMMUNITY: B LYMPHOCYTES AND THE ANTIBODY RESPONSE, AND HOW MICROBIAL PATHOGENS EVADE BEING ELIMINATED BY THIS ARM OF THE IMMUNE SYSTEM WEEK 4-ADAPTIVE IMMUNITY: T LYMPHOCYTE DIVERSITY AND CELLULAR RESPONSES IN HOST IMMUNITY, AND HOW MICROBIAL PATHOGENS INHIBIT THEIR FUNCTIONS

  9. Continued… WEEK 5-IMMUNE REGULATION: WHAT REGULATES OR CONTROLS THE EXPRESSION OF IMMUNITY, AND HOW MICROBIAL PATHOGENS ALTER IMMUNE REGULATION FOR THEIR OWN BENEFIT WEEK 6-OPPORTUNITIES: FURTHER YOUR EDUCATION IN THE FIELD OF IMMUNOLOGY AND PERFORM RESEARCH IN IMMUNOLOGY LABS WEEK 7-OVERVIEW: COURSE MATERIALS: EMPHASIS ON THE “BIG PICTURE” FUNDAMENTALS OF IMMUNITY AND ELEMENTS OF MICROBIAL PATHOGEN IMMUNE EVASION

  10. WHAT ARE THE EXPECTATIONS? • ABSORB NEW INFORMATION, THINK ABOUT HOST IMMUNITY TO INFECTION, ASK QUESTIONS IN CLASS • WEEKLY DISCUSSION SESSIONS • PASS FINAL EXAM THAT TESTS YOU ON THE BASICFUNDAMENTALS OF IMMUNE SYSTEM FUNCTION THAT YOU HAVE LEARNED IN CLASS • CONSIDERA COURSE OF STUDY THAT INTEGRATES IMMUNITY AND MICROBIAL PATHOGENESIS • EDUCATE OTHERS!

  11. WHATIS THE IMMUNE SYSTEM? (AND WHEREIS IT??)

  12. WHAT CELLSMAKE UP THE TISSUES AND ORGANS OF THE IMMUNE SYSTEM?

  13. THE IMMUNE SYSTEM HAS TWO FUNCTIONALCOMPONENTS: • INNATE IMMUNE SYSTEM • ADAPTIVE IMMUNE SYSTEM

  14. RELATIVE IMPORTANCEOF INNATE vs ADAPTIVE IMMUNITY

  15. SEQUENTIALINDUCTION OF INNATE AND ADAPTIVE IMMUNE RESPONSES TO INFECTION INNATE ADAPTIVE RECOGNITION OF MICROBIAL “DANGER” SIGNALS (PAMPs) RECOGNITION OF SPECIFIC MICROBIAL ANTIGENS

  16. COMPARISONSOF INNATE vs ADAPTIVE IMMUNITY

  17. LYMPHOCYTES CAN RECOGNIZEAND SPECIFICALLY RESPOND TO ANY MICROBIAL PATHOGEN!

  18. THE ADAPTIVE IMMUNE RESPONSE REMEMBERSPRIOR EXPOSURE TO PATHOGENS Adaptive Immunity Innate

  19. GENERALIZED IMMUNE RESPONSE TO MICROBIAL PATHOGENS

  20. SELECTIVE PRESSURES OF MICROBIAL INFECTION LED TO THE EVOLUTION AND DIVERSIFICATION OF THE IMMUNE SYSTEM BUT… WITH SUCH AN EFFICIENT AND EFFECTIVE IMMUNE SYSTEM, WHY DO WE EVER GET SICK (AND OFTEN DIE) FROM INFECTIONS?

  21. MICROBIAL PATHOGENS HAVE CO-EVOLVED WITH THE IMMUNE SYSTEM OF ALL ANIMALS >500 MILLION YEARS

  22. Figure 1. Evolutionary Alice Through the Looking Glass “The most curious part of the thing was, that the trees and the other things round them never changed their places at all: however fast they went, they never seemed to pass anything. ‘I wonder if all the things move along with us?' thought poor puzzled Alice.” (Carroll, 1872). Originally applied by Van Valen to frequency-dependent coevolution (Van Valen, 1973). In this case, Alice is a metaphor for animals unable to put distance between themselves and their ever-present parasites. Illustration by Kristina Hedrick, Lightray Productions, Los Angeles, California.

  23. ANTIGENIC VARIATION EVADES HOST IMMUNE RECOGNITION

  24. The Complement “MAC” kills gram negative bacteria by direct lysis Immune evasion of Enterococcus faecalis by an extracellular gelatinase that cleaves C3 and iC3b Shin Yong Park, Yong Pyo Shin, Chong Han Kim, Ho Jin Park, Yeon Sun Seong , Byung Sam Kim , Sook Jae Seo and In Hee Lee The Journal of Immunology, 2008, 181: 6328-6336.

  25. OTHER BACTERIAL IMMUNE ESCAPE MECHANISMS

  26. FUNDAMENTAL #1 ANIMALS HAVE HIGHLY EVOLVED AND COMPLEX INNATE AND ADAPTIVE IMMUNE SYSTEMS THAT FIGHT MICROBIAL PATHOGENS however… MICROBIAL PATHOGENS HAVE CO-EVOLVED ELABORATE MECHANISMS TO EVADE, INTERFERE AND MANIPULATE THE HOST’S IMMUNITY TO THEIR OWN BENEFIT

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