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Y79 retinoblastoma cell line surface proteome

ABSTRACT: The proteins on the surface of Y79 retinoblastoma cell line were analyzed by cell surface biotinylation and streptavidin affinity purification.

INSTRUMENT(S): LTQ Orbitrap Velos

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Permanent Cell Line Cell, Cell Culture

DISEASE(S): Retinoblastoma

SUBMITTER: Yuzuru Shiio

LAB HEAD: Yuzuru Shiio

PROVIDER: PXD039517 | Pride | 2024-01-26

REPOSITORIES: Pride

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			Action	DRS
	180207YS19_D1.raw	Raw
	180207YS20_D2.raw	Raw
	180207YS21_D3.raw	Raw
	180207YS22_D4.raw	Raw
	180207YS23_D5.raw	Raw

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Publications

Nitric oxide suppression by secreted frizzled-related protein 2 drives retinoblastoma.

Jayabal Panneerselvam P Zhou Fuchun F Ma Xiuye X Bondra Kathryn M KM Blackman Barron B Weintraub Susan T ST Chen Yidong Y Chévez-Barrios Patricia P Houghton Peter J PJ Gallie Brenda B Shiio Yuzuru Y

Cell reports 20230213 2

Retinoblastoma is a cancer of the infant retina primarily driven by loss of the Rb tumor suppressor gene, which is undruggable. Here, we report an autocrine signaling, mediated by secreted frizzled-related protein 2 (SFRP2), which suppresses nitric oxide and enables retinoblastoma growth. We show that coxsackievirus and adenovirus receptor (CXADR) is the cell-surface receptor for SFRP2 in retinoblastoma cells; that CXADR functions as a "dependence receptor," transmitting a growth-inhibitory sign ...[more]

PMID: 36773293

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Comparing search algorithms - Visualizing and comparing results of different peptide identification methods

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Characterization of Macrophage Galactose-type Lectin (MGL) ligands in colorectal cancer cell lines

Project description:Background The Ca2+-dependent C-type lectin receptor Macrophage Galactose-type Lectin (MGL) is highly expressed by tolerogenic dendritic cells (DC) and macrophages. MGL exhibits a high binding specificity for terminal alpha- and beta-linked GalNAc residues found in Tn, sTn and LacdiNAc antigens. These glycan epitopes are often overexpressed in colorectal cancer (CRC), and, as such, MGL can be used to discriminate tumor from the corresponding healthy tissues. Moreover, the high expression of MGL ligands is associated with poor disease-free survival in stage III of CRC tumors. Nonetheless, the glycoproteins expressed by tumor cells that are recognized by MGL have hitherto remained elusive. Methods Using a panel of three CRC cell lines (HCT116, HT29 and LS174T), recapitulating CRC diversity, we performed FACS staining and pull-down assays using a recombinant soluble form of MGL (and a mutant MGL as control) combined with mass spectrometry-based (glyco)proteomics. Results HCT116 and HT29, but not LS174T, are high MGL-binding CRC cell lines. On these cells, the major cell surface binding proteins are receptors (e.g. MET, PTK7, SORL1, PTPRF) and integrins (ITGB1, ITGA3). From these proteins, several N- and/or O-glycopeptides were identified, of which some carried either a LacdiNAc or Tn epitope.

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Mouse organ specific spectral library and DIA analysis of the plasma proteome

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QUANTITATIVE PHOSPHOPROTEOMIC PROFILING OF PRIMARY RETINOBLASTOMA TUMORS

Project description:Retinoblastoma is a malignant tumor of the retina which most often occurs in children below 5 years of age with an incident rate of about 1 in 15,000 to 18,000 live births. Retinoblastoma is the first ever cancer that was reported to have a genetic basis. It occurs widely due to inactivating mutations in RB1 gene. Gene expression studies, copy number variation analysis, epigenetic profiling including miRNA and methylation of retinoblastoma has been carried to understand the disease mechanism and key players in the disease. Our group has earlier performed differential proteomics of retinoblastoma to identify proteins of therapeutic importance. However, there are no studies to understand the signalling mechanisms associated with retinoblastoma. Hence, global phosphoproteomics of retinoblastoma was carried out to identify signalling events associated with this cancer. Our study identified stress response proteins to be hyper phosphorylated which included H2AFX and sirtuin 1. In particular, Ser140 of H2AFX also known as gamma-H2AX was found to be hyperphosphorylated in retinoblastoma that indicated activation of DNA damage response pathways. We also observed activation of anti-apoptotic proteins in retinoblastoma compared to control. These observations showed activation of survival pathways and signalling networks activated in tumors.

2019-11-11 | PXD007228 | Pride