20190819: IHC IgG Swine sciatic nerve teasing in CNTN1/Caspr1+ patients and PRE-ABSORBED SERUM

  • Fixation: in acetone -20ºC  for 10 min at RT
  • Wash 2 times with PBS (5 min) with agitation
  • Use the marker (DakoPen) to highlight the location of the sample.
    Indicate the sample number and the date in pencil on the frosted glass  and place the samples in the humid chamber.
  • Blocking: cover the entire sample with Goat Serum 5% with triton 0.1% . Incubate 1 hour at RT in a humid chamber .
  • Dilute the serum samples  1/100 in Goat Serum 5% with triton 0.1% –> add diluted serum and incubate 1 h at TA in the humid chamber.
  • Wash 2 times with PBS (5 min) with agitation
  • Dilute commercial primary antibody Chicken anti-human / rat / mouse-NF (AF3235 R & D System) * 1/500 with 5% with triton 0.1% –> Add the  commercial diluted antibody  and incubate  OVER NIGHT AT 4ºc
  • Wash 2 times with PBS (5 min) with agitation
  • Secondary antibodies: dilute GAC488 and GAH 594 1/1000 with 5% with triton 0.1% –> incubate 1 h at TA in the humid chamber.
  • Wash 2 times with PBS (5 min) with agitation
  • Mount with Fluoromount

SAMPLES: see table for samples and results

NEGATIVE CONTROL WITH Caspr1 commercial Abnegative, I dont see Caspr1 commercial Ab
ReginePositive: paranodes
VieiraPositive: paranodes
PiffortPositive: paranodes
MRVM CNTN1 ABSORBED 1:800Positive: paranodes
MRVM Caspr1 ABSORBED 1:800Positive: paranodes
MRVM CNTN1/Caspr1 ABSORBED 1:800NEGATIVE
MRVM HEK ABSORBED 1:800Positive: paranodes
17595 CNTN1 ABSORBED 1:800NEGATIVE (REPEAT)
17595 Caspr1 ABSORBED 1:800NEGATIVE (REPEAT)
17595 CNTN1/Caspr1 ABSORBED 1:800NEGATIVE
17595 HEK ABSORBED 1:800Positive: paranodes
VIEIRA CNTN1 ABSORBED 1:1000Positive: paranodes
VIEIRA Caspr1 ABSORBED 1:1000Positive: paranodes
VIEIRA CNTN1/Caspr1 ABSORBED 1:1000NEGATIVE
VIEIRA HEK ABSORBED 1:1000Positive: paranodes

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