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Updated: Feb 8, 2026

Author Spotlight: Recreating Melanoma Complexity with Patient-Derived Organoids for Immunotherapy Evaluation
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The TRAP complex (SSR1-SSR4): mechanistic roles and therapeutic opportunities

Jiaqi Zhang1, Xing Wan2, Aixia Gong1

  • 1Department of Digestive Endoscopy, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, PR China.

Annals of Medicine
|February 6, 2026
PubMed
Abstract

Insights

The TRAP complex (translocational ശരീര apparatus protein) subunits SSR1-SSR4 are crucial in various diseases, including cancer and diabetes. Understanding their roles offers potential for new therapeutic targets and biomarkers.

Area of Science:

  • Molecular Biology
  • Oncology
  • Cellular Biology

Background:

  • Esophageal squamous cell carcinoma (ESCC) is aggressive with unclear mechanisms.
  • Signal sequence receptor subunit delta (SSR4) is a potential ESCC biomarker.
  • The TRAP complex (SSR1-SSR4) is vital for protein homeostasis.

Purpose of the Study:

  • Review TRAP complex roles in disease.
  • Identify knowledge gaps and therapeutic potential.
  • Clarify subunit functions in tumor progression.

Main Methods:

  • Literature review and synthesis.
  • Pan-cancer analysis of TRAP subunit genes.
  • Examination of genetic mutations and disease associations.

Main Results:

  • TRAP subunit genes are upregulated in cancers, affecting progression and immune infiltration.
  • SSR3 and SSR4 mutations link to congenital glycosylation disorders.
  • SSR1 and SSR3 impact glucose metabolism and diabetes risk.

Conclusions:

  • TRAP complex subunits are crucial in diverse diseases.
  • TRAP subunits show potential as therapeutic targets and biomarkers.
  • Further research needed for mechanistic understanding and drug design.
Keywords:
SSR1SSR2SSR3SSR4TRAP complex

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