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Defining Substrate Specificities for Lipase and Phospholipase Candidates
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A career in bioactive lipids.

Yusuf A Hannun1

  • 1Departments of Medicine, Biochemistry, Pharmacology, and Pathology and the Stony Brook Cancer Center, and The Northport Veterans Affairs Hospital, Northport, New York, USA.

The Journal of Biological Chemistry
|December 13, 2025
PubMed
Summary
This summary is machine-generated.

This article details a 4-decade research journey into sphingolipids, revealing their roles as bioactive molecules. Key enzymes and genes in sphingolipid metabolism were identified, advancing understanding of cell biology and disease.

Keywords:
cell regulationceramideenzyme mechanismsprotein kinase Csphingolipidssphingomyelinase

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Area of Science:

  • Lipid biochemistry
  • Cell biology
  • Molecular medicine

Background:

  • Sphingolipids, enigmatic lipid molecules, have been studied for over four decades.
  • Research began with protein kinase C regulation by lipids, leading to the discovery of sphingosine's inhibitory effects.

Purpose of the Study:

  • To define the biologic and mechanistic foundations of sphingolipids.
  • To explore the roles of sphingolipids as bioactive molecules in cell biology and disease.
  • To recount a personal scientific journey in lipid research.

Main Methods:

  • Long-term laboratory research in sphingolipid metabolism.
  • Identification of key genes and enzymes in sphingolipid pathways.
  • Studies on the bioactive functions of sphingolipids, particularly ceramides.

Main Results:

  • Sphingolipids, including ceramides, were established as bioactive molecules with diverse functions.
  • Key genes and enzymes regulating sphingolipid metabolism were defined.
  • Significant advancements were made in understanding sphingolipid roles in cell biology and disease.

Conclusions:

  • The research fundamentally advanced the understanding of sphingolipid metabolism and function.
  • Sphingolipids play critical roles in various biologic processes and diseases.
  • The article offers reflections on the scientific process and research conduct.