20170621 ICC: Piezo 1 IgG ICC in paraneoplastic neuropathies

Objectives

To test paraneoplastic neuropathies patients for IgG  positivity towards human  Piezo 1 in HEK 293 transfected cells.

Patients

  • A1) 95-43
  • A2)94-292
  • A3) 97-543
  • A4) 93-40
  • A5) 92-147
  • A6) 94-55
  • B1) 93-38
  • B2) 92-133
  • B3) 01-848
  • B4) 00-1289
  • D3)00-1248

 PIEZO 1  ICC

  • Human Piezo 1 transfected HEKs 293 grown in coverslips . Fixed with PFA 4% and blocked with 5% goat serum in  PBS. NOTE: Patient 00-1248 (IP) was also tested in Piezo 1 transfected and permeabilized HEK cells.
  • PBS
  • Blocking: 5% goat serum in  PBS
  • Patient’s sera diluted 1/100 (IgG)  with 5% goat serum in  PBS.
  • Primary Ab: No primary antibody was used as cells incorporated GFP
  • Secondary Abs:  GAH 594 (1/500) IgG 
  • Vectashield mounting medium

RESULTS

Todas las muestras son negativas. Sin embargo, en la muestra D3)00-1248, al jugar con el micrométrico parece que se ven unas células positivas que colocalizan con el marcaje de Piezo 1 asociado a GFP. Para salir de dudas en próximos experimentos se repetirá el ensayo para esta muestra.

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