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The histone H1 family comprises of essential components of chromatin, which bind to the linker DNA connecting individual nucleosomes and contribute to the formation of higher-order chromatin structures. Multiple histone H1 exist, each with distinct interactions with the nucleosome that specifically influence chromatin organization and nuclear functions. Histone H1 variants have been shown to play a role as drivers in cancer and may serve as biomarkers for patient stratification. To overcome the limitations associated with antibody- and RNA-based methods for analyzing histone H1, we developed a mass spectrometry (MS)-based label-free approach to simultaneously analyze all somatic histone H1 variants in patient-derived samples. Here, we describe how this method can be used for the analysis of low-amount clinical samples obtained through laser capture microdissection of tissue sections.

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Laser Capture Microdissection Followed by Histone H1 Variant Analysis by Mass Spectrometry

  • 实验方案

  • 发表日期：

    2026年

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  • Tiziana Bonaldi,
  • Roberta Noberini

摘要

The histone H1 family comprises of essential components of chromatin, which bind to the linker DNA connecting individual nucleosomes and contribute to the formation of higher-order chromatin structures. Multiple histone H1 exist, each with distinct interactions with the nucleosome that specifically influence chromatin organization and nuclear functions. Histone H1 variants have been shown to play a role as drivers in cancer and may serve as biomarkers for patient stratification. To overcome the limitations associated with antibody- and RNA-based methods for analyzing histone H1, we developed a mass spectrometry (MS)-based label-free approach to simultaneously analyze all somatic histone H1 variants in patient-derived samples. Here, we describe how this method can be used for the analysis of low-amount clinical samples obtained through laser capture microdissection of tissue sections.