Related Experiment Video

Updated: Jul 4, 2025

Using X-ray Crystallography, Biophysics, and Functional Assays to Determine the Mechanisms Governing T-cell Receptor Recognition of Cancer Antigens
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Using X-ray Crystallography, Biophysics, and Functional Assays to Determine the Mechanisms Governing T-cell Receptor Recognition of Cancer Antigens

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Crosstalk Between NK Cell Receptors and Tumor Membrane Hsp70-Derived Peptide: A Combined Computational and

Mina Yazdi1, Morteza Hasanzadeh Kafshgari2, Fatemeh Khademi Moghadam3

  • 1Pharmaceutical Biotechnology, Department of Pharmacy, Ludwig-Maximilians-Universität (LMU), 81377, Munich, Germany.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|February 1, 2024
PubMed

Insights

Natural killer (NK) cells combat cancer by targeting tumors. Stimulating NK cells with interleukin-2 and Hsp70 peptide TKD enhances their ability to kill cancer cells, particularly those expressing membrane Hsp70.

Area of Science:

  • Immunology
  • Cancer Biology
  • Computational Biology

Background:

  • Natural killer (NK) cells are crucial for innate immunity against cancer.
  • Tumor cells develop mechanisms to evade NK cell detection and destruction.
  • Enhancing NK cell antitumor activity is vital for effective cancer therapy.

Purpose of the Study:

  • To investigate the interaction between the Hsp70-derived peptide TKD and NK cell activating receptors.
  • To understand the molecular mechanisms underlying TKD-mediated NK cell activation.
  • To explore strategies for improving NK cell-based cancer immunotherapy.

Main Methods:

  • Molecular docking and molecular dynamics simulations were used to model TKD-receptor interactions.
  • Antibody blocking and CRISPR/Cas9 gene editing were employed to validate the role of CD94.
  • Ex vivo stimulation of patient-derived NK cells with IL-2 and TKD peptide.

Main Results:

  • In silico modeling identified CD94/NKG2A and CD94/NKG2C as key receptors for TKD binding.
  • CD94 was confirmed as essential for TKD-induced NK cell activation and stimulation.
  • Activated NK cells exhibited enhanced cytotoxicity against mHsp70-positive tumor cells.

Conclusions:

  • The study elucidates the critical role of CD94 in TKD-mediated NK cell activation.
  • TKD stimulation enhances NK cell cytotoxic capacity and pro-inflammatory cytokine release.
  • Targeting the TKD-CD94 interaction represents a promising strategy for augmenting NK cell immunotherapy.
Keywords:
Adoptive NK cell‐based immunotherapyCRISPR/Cas9Computational analysisHeat shock protein 70NK cell receptors

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