Cell-free synthesis of human toll-like receptor 9 (TLR9): Optimization of synthesis conditions and functional analysis

PLoS One. 2019 Apr 25;14(4):e0215897. doi: 10.1371/journal.pone.0215897. eCollection 2019.

Abstract

The Toll-like receptor family belongs to the group of pathogen recognition receptors which is responsible for the discrimination of self and non-self pathogen-associated molecular patterns (PAMP's). Toll-like receptors play an important role in the innate immunity and defects in protein expression or polymorphism is linked to various diseases such as Systemic Lupus Erythematosus (SLE). The elucidation of the underlying mechanism is crucial for future treatment and therapeutics of toll-like receptor linked diseases. Herein, we report the cell-free synthesis of human Toll-like receptor 9 (hTLR9) using CHO lysate and the continuous exchange cell-free (CECF) synthesis platform. The functionality of this protein was demonstrated by an ELISA binding assay using the ectodomain of TLR9 (TLR9-ECD).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell-Free System
  • Enzyme-Linked Immunosorbent Assay
  • Humans
  • Protein Binding
  • Protein Domains
  • Temperature
  • Time Factors
  • Toll-Like Receptor 9 / biosynthesis*
  • Toll-Like Receptor 9 / chemistry

Substances

  • TLR9 protein, human
  • Toll-Like Receptor 9

Grants and funding

This work is supported by the European Regional Development Fund (EFRE) and the German Ministry of Education and Research (BMBF, No. 031B0078A). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.