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2016 ; 473
(21
): 3979-3995
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Comparative proteomic assessment of matrisome enrichment methodologies
#MMPMID27589945
Krasny L
; Paul A
; Wai P
; Howard BA
; Natrajan RC
; Huang PH
Biochem J
2016[Nov]; 473
(21
): 3979-3995
PMID27589945
show ga
The matrisome is a complex and heterogeneous collection of extracellular matrix
(ECM) and ECM-associated proteins that play important roles in tissue development
and homeostasis. While several strategies for matrisome enrichment have been
developed, it is currently unknown how the performance of these different
methodologies compares in the proteomic identification of matrisome components
across multiple tissue types. In the present study, we perform a comparative
proteomic assessment of two widely used decellularisation protocols and two
extraction methods to characterise the matrisome in four murine organs (heart,
mammary gland, lung and liver). We undertook a systematic evaluation of the
performance of the individual methods on protein yield, matrisome enrichment
capability and the ability to isolate core matrisome and matrisome-associated
components. Our data find that sodium dodecyl sulphate (SDS) decellularisation
leads to the highest matrisome enrichment efficiency, while the extraction
protocol that comprises chemical and trypsin digestion of the ECM fraction
consistently identifies the highest number of matrisomal proteins across all
types of tissue examined. Matrisome enrichment had a clear benefit over
non-enriched tissue for the comprehensive identification of matrisomal components
in murine liver and heart. Strikingly, we find that all four matrisome enrichment
methods led to significant losses in the soluble matrisome-associated proteins
across all organs. Our findings highlight the multiple factors (including tissue
type, matrisome class of interest and desired enrichment purity) that influence
the choice of enrichment methodology, and we anticipate that these data will
serve as a useful guide for the design of future proteomic studies of the
matrisome.