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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Proteomic profiling of the proteolytic events in the secretome of the transformed phenotype of melanocyte-derived cells using Terminal Amine Isotopic Labeling of Substrates

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Liberato, Tarcisio [1] ; Fukushima, Isabella [1] ; Kitano, Eduardo S. [2, 3] ; Serrano, Solange M. T. [2] ; Chammas, Roger [4] ; Zelanis, Andre [1]
Total Authors: 6
[1] Fed Univ Sao Paulo ICT UNIFESP, Dept Sci & Technol, Funct Prote Lab, Sao Jose Dos Campos, SP - Brazil
[2] Inst Butantan, Ctr Toxins Immune Response & Cell Signaling CeTIC, Lab Especial Toxinol Aplicada, Sao Paulo - Brazil
[3] Inst Butantan, Ctr Excellence New Target Discovery CENTD, Sao Paulo - Brazil
[4] Univ Sao Paulo, Fac Med, Inst Canc Estado Sao Paulo, Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF PROTEOMICS; v. 192, p. 291-298, FEB 10 2019.
Web of Science Citations: 1

The comprehensive profiling of the repertoire of secreted proteins from cancer cells samples provides information on the signaling events in oncogenesis as well as on the cross-talk between normal and tumoral cells. Moreover, the analysis of post-translational modifications in secreted proteins may unravel biological circuits regulated by irreversible modifications such as proteolytic processing. In this context, we used Terminal Amine Isotopic Labeling of Substrates (TAILS) to perform a system-wide investigation on the N-terminome of the secretomes derived from a paired set of mouse cell lines: Melan-a (a normal melanocyte) and Tm1 (its transformed phenotype). Evaluation of the amino acid identities at the scissile bond in internal peptides revealed significant differences, suggesting distinct proteolytic processes acting in the normal and tumoral secretomes. The mapping and annotation of cleavage sites in the tumoral secretome suggested functional roles of active proteases in central biological processes related to oncogenesis, such as the processing of growth factors, cleavage of extracellular matrix proteins and the shedding of ectopic domains from the cell surface, some of which may represent novel processed forms of the corresponding proteins. In the context of the tumor microenvironment, these results suggest important biological roles of proteolytic processing in murine melanoma secreted proteins. (AU)

FAPESP's process: 14/06579-3 - System-wide analysis of N-terminal processing and protein diversity in the secretome of tumor cells
Grantee:André Zelanis Palitot Pereira
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 13/07467-1 - CeTICS - Center of Toxins, Immune-Response and Cell Signaling
Grantee:Hugo Aguirre Armelin
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 17/07897-7 - Proteolytic processing analysis in the secretome of melanoma tumor cells
Grantee:Isabella Fukushima
Support type: Scholarships in Brazil - Scientific Initiation