Changes in tissue proteome associated with ATTR amyloidosis: insights into pathogenesis

Area of Science:

• Biochemistry
• Proteomics
• Medical Research

Background:

• Transthyretin amyloidosis (ATTR) is characterized by transthyretin fibril deposition.
• These deposits significantly alter the tissue proteome.
• Understanding these proteomic changes is crucial for ATTR diagnosis and management.

Purpose of the Study:

• To profile the proteome of subcutaneous adipose tissue in ATTR patients.
• To identify global proteomic changes specifically associated with ATTR.
• To compare ATTR proteomic profiles with healthy controls and other amyloidosis types.

Main Methods:

• Utilized multidimensional protein identification technology (e.g., mass spectrometry).
• Analyzed subcutaneous adipose tissue proteomes from ATTR patients, healthy controls, and patients with AL or AA amyloidosis.
• Employed bioinformatic data interpretation for proteomic analysis.

Main Results:

• Transthyretin was significantly up-represented in ATTR adipose tissue samples, serving as a disease marker.
• Tissue-resident proteins involved in critical biological processes showed altered representation in ATTR.
• Proteomic profiling distinguished ATTR from other amyloidosis types and controls.

Conclusions:

• High-throughput proteomic analysis of affected adipose tissue is effective for identifying ATTR-specific protein expression changes.
• This approach aids in understanding the molecular pathology of ATTR.
• Proteomic profiling can serve as a diagnostic tool for ATTR.