NEK10 kinase ablation affects mitochondrial morphology, function and protein phosphorylation status.

Area of Science:

• Cell Biology
• Molecular Biology
• Biochemistry

Background:

• NEK10 (NIMA-related kinases 10) is a kinase involved in cellular processes, with prior studies suggesting mitochondrial involvement.
• Previous research indicated NEK10 knockdown affects mitochondrial morphology, respiration, mtDNA integrity, and reactive oxygen species.

Purpose of the Study:

• To elucidate the specific role of NEK10 in maintaining mitochondrial homeostasis.
• To investigate the molecular mechanisms underlying NEK10's function in mitochondria.

Main Methods:

• Utilized human HAP1 cells with NEK10 knockout (KO) for comprehensive analysis.
• Assessed mitochondrial respiration, morphology, mass, and mtDNA.
• Performed proteome and phosphoproteome analysis of mitochondrial fractions using LC-MS/MS.

Main Results:

• NEK10 deficiency significantly disturbed mitochondrial functions.
• Proteomic analysis revealed NEK10 modulates threonine phosphorylation of mitochondrial proteins like HSP60, NDUFB4, and TOM20.
• Observed impacts on respiratory complexes and autophagy pathways due to altered protein phosphorylation.

Conclusions:

• NEK10 plays a vital role in mitochondrial function and homeostasis.
• NEK10 likely regulates mitochondrial protein phosphorylation, influencing cellular processes.