Measurement of the p38 signaling pathway in the Pro253Arg mutation of FGFR2 in Apert syndrome Kaivalya Dandamudi.

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Presentation transcript:

Measurement of the p38 signaling pathway in the Pro253Arg mutation of FGFR2 in Apert syndrome Kaivalya Dandamudi

BIRTH DEFECTS A SEVERE PROBLEM 1 in 33 newborns in the U.S. are born with birth defects Craniofacial birth defects make up 1/3 of birth defects (Center for Disease Control and Prevention, 2016)

CRANIOSYNOSTOSIS (CS) THE MOST COMMON CRANIOFACIAL BIRTH DEFECT (Center for Disease Control and Prevention, 2016)

BONE DEVELOPMENT TWO PROCESSES Intramembranous ossification bone tissue Endochondral ossification cartilage tissue

APERT SYNDROME A SEVERE FORM OF CRANIOSYNOSTOSIS (Koka, 2016)

APERT SYNDROME CAUSES TWO MUTATIONS Mutations in the fibroblast growth receptor 2 (FGFR2) gene Ser252Trp mutation Pro253Arg mutation

FGFs & FGFRs TYPICAL STRUCTURE AND FUNCTION Extracellular binding domain Intracellular domain Transmembrane region (Su, Jin, & Chen, 2014)

FGFs & FGFRs PLAY A ROLE IN ENDOCHONDRAL BONE FORMATION Extracellular binding domain Intracellular domain Transmembrane region (Su, Jin, & Chen, 2014)

EXPERIMENT GOAL Determine if the p38 signaling pathway is involved in the Pro253Arg mutation of FGFR2 through a Western Blot Analysis

WESTERN BLOT ANALYSIS STEP 1: BMSCs obtained from a mouse model (Chen, et al., 2014)

WESTERN BLOT ANALYSIS STEP 2: Set up Figure 3 Western Blot Setup (Leinco Technologies, 2017) Protein concentrations in lysate determined Protein samples are heated to denature and give them a net negative charge Gel electrophoresis Electrophoretic transfer

WESTERN BLOT ANALYSIS STEP 3: Detection Figure 4 Indirect detection method in Western Blots Target proteins = p38 and phospho-p38 Indirect detection method Antibodies detected with substrate

DISCUSSION POSSIBLE OUTCOMES Figure 2 Western Blot Results (Chen, et al., 2014)

DISCUSSION FUTURE STEPS How is the p38 pathway involved in bone development? What exactly does the p38 pathway affect in bone development? New treatment methods for Apert syndrome and craniosynostosis