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Related Experiment Video

Updated: Jan 29, 2026

Preparation of Pooled Human Platelet Lysate pHPL as an Efficient Supplement for Animal Serum-Free Human Stem Cell Cultures
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Human platelet lysate current standards and future developments.

Reinhard Henschler1, Christian Gabriel2, Katharina Schallmoser3

  • 1Institute of Transfusion Medicine, University Hospital Leipzig, Leipzig, Germany.

Transfusion
|February 12, 2019
PubMed
Summary
This summary is machine-generated.

Human Platelet Lysate (HPL) is a key supplement for expanding mesenchymal stem/progenitor cells (MSCs) in cell therapy. Standardization and clinical studies are urgently needed to ensure HPL product quality and safety for advanced therapies.

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Preparation of Pooled Human Platelet Lysate pHPL as an Efficient Supplement for Animal Serum-Free Human Stem Cell Cultures
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Area of Science:

  • Cell Biology
  • Regenerative Medicine
  • Biotechnology

Background:

  • Human Platelet Lysate (HPL) is increasingly used as a substitute for fetal bovine serum in the ex vivo expansion of mesenchymal stem/progenitor cells (MSCs).
  • Current HPL manufacturing lacks uniform standardization regarding platelet source and production methods.
  • There is limited data on HPL preparations manufactured for direct clinical use.

Purpose of the Study:

  • To review the current state-of-the-art of Human Platelet Lysate (HPL) use in cell therapy.
  • To identify the need for standardization in HPL manufacturing and product definition.
  • To highlight the necessity for controlled clinical studies and consensus release criteria for HPL.

Main Methods:

  • A workshop was convened to discuss the applications and challenges of HPL in cell therapy.
  • Review of current manufacturing practices, regulatory approaches, and safety considerations for HPL.
  • Discussion on the requirements for HPL used in human cell propagation and platelet-rich plasma (PRP) applications.

Main Results:

  • HPL is primarily used as an adjunct material for ex vivo MSC expansion, effectively replacing fetal bovine serum.
  • Significant variability exists in HPL production, necessitating standardization of platelet source and manufacturing processes.
  • There is a critical need for controlled clinical trials and defined minimum release criteria for HPL products.
  • Safety concerns regarding pooled donor platelets require pathogen inactivation and rigorous risk assessment.

Conclusions:

  • Standardization of HPL manufacturing and product definition is crucial for its safe and effective use in cell therapy.
  • Controlled clinical studies are essential to validate HPL efficacy and safety profiles.
  • Implementing robust safety measures, including pathogen inactivation and supplier qualification, is vital for HPL production.
  • Harmonized regulatory approaches are needed for HPL used in cell propagation and direct clinical applications.