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Pregled bibliografske jedinice broj: 540766

Assessment of the Molecular Expression and Structure of Gangliosides in Brain Metastasis of Lung Adenocarcinoma by an Advanced Approach Based on Fully Automated Chip-Nanoelectrospray Mass Spectrometry


Zamfir, Alina D.; Serb, Alina; Vukelić, Željka; Flangea, Corina; Schiopu, Catalin; Fabris, Dragana; Kalanj-Bognar, Svjetlana; Capitan, Florina; Sisu, Eugen
Assessment of the Molecular Expression and Structure of Gangliosides in Brain Metastasis of Lung Adenocarcinoma by an Advanced Approach Based on Fully Automated Chip-Nanoelectrospray Mass Spectrometry // Journal of the American Society for Mass Spectrometry, 22 (2011), 12; 2145-2159 doi:10.1007/s13361-011-0250-5 (međunarodna recenzija, članak, znanstveni)


Naslov
Assessment of the Molecular Expression and Structure of Gangliosides in Brain Metastasis of Lung Adenocarcinoma by an Advanced Approach Based on Fully Automated Chip-Nanoelectrospray Mass Spectrometry

Autori
Zamfir, Alina D. ; Serb, Alina ; Vukelić, Željka ; Flangea, Corina ; Schiopu, Catalin ; Fabris, Dragana ; Kalanj-Bognar, Svjetlana ; Capitan, Florina ; Sisu, Eugen

Izvornik
Journal of the American Society for Mass Spectrometry (1044-0305) 22 (2011), 12; 2145-2159

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Quadrupole time-of-flight tandem mass spectrometry; Chip-nanoelectrospray; Gangliosides; Lung adenocarcinoma; Brain metastasis

Sažetak
Gangliosides (GGs), sialic acid-containing glycosphingolipids, are known to be involved in the invasive/metastatic behavior of brain tumor cells. Development of modern methods for determination of the variations in GG expression and structure during neoplastic cell transformation is a priority in the field of biomedical analysis. In this context, we report here on the first optimization and application of chip-based nanoelectrospray (NanoMate robot) mass spectrometry (MS) for the investigation of gangliosides in a secondary brain tumor. In our work a native GG mixture extracted and purified from brain metastasis of lung adenocarcinoma was screened by NanoMate robot coupled to a quadrupole time-of- flight MS. A native GG mixture from an agematched healthy brain tissue, sampled and analyzed under identical conditions, served as a control. Comparative MS analysis demonstrated an evident dissimilarity in GG expression in the two tissue types. Brain metastasis is characterized by many species having a reduced Nacetylneuraminic acid (Neu5Ac) content, however, modified by fucosylation or O-acetylation such as Fuc-GM4, Fuc-GM3, di-O-Ac-GM1, O-Ac-GM3. In contrast, healthy brain tissue is dominated by longer structures exhibiting from mono- to hexasialylated sugar chains. Also, significant differences in ceramide composition were discovered. By tandem MS using collisioninduced dissociation at low energies, brain metastasis- associated GD3 (d18:1/18:0) species as well as an uncommon Fuc-GM1 (d18:1/18:0) detected in the normal brain tissue could be structurally characterized. The novel protocol was able to provide a reliable compositional and structural characterization with high analysis pace and at a sensitivity situated in the fmol range.

Izvorni jezik
Engleski

Znanstvena područja
Temeljne medicinske znanosti



POVEZANOST RADA


Projekt / tema
108-1081870-1877 - Uloga membranskih lipida u moždanom razvitku, starenju i neurodegeneraciji (Svjetlana Kalanj-Bognar, )
108-1081870-2415 - Strukturno-funkcionalna glikolipidomika moždanog razvitka i maligne alteracije (Željka Vukelić, )

Ustanove
Medicinski fakultet, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


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