Hemoglobin in gastric cancer (ISSN 2753-8176 (online), DOI:10.1101/202291v1 , Small report

Hemoglobin in gastric cancer (ISSN 2753-8176 (online), DOI:10.1101/202291v1 Small report Ana Pedro (1) 1. Gwyntwr1386 Pharmacy, Regus Chester Business Park, Heronsway,Chester CH4 9QR, United Kingdom info@gwyntwr1386.com Gastric cancer is a cancer which develops from the lining of the stomach(1). The majority of the cases are gastric carcinomas, which can be divided into a number of subtypes, including gastric adenocarcinoma (2) Unfortunately, early gastric cancer causes few symptoms and the disease is usually advanced when the diagnosis is made being difficult to treat.(3) We analyzed by proteomics the secretion of different hemoglobin by different gastric cancer cell lines derived from primary tumor tissues (4) or lymph node metastases (5) or stage IV tumors (6) in cell culture. We found out that (table 1 and fig.1), hemoglobin subunit gamma-2 (HBG-2) is present in both primary cancer (SNU1) and lymph node (LN) metastases (HGC27) . From primary cancer to LN metastases, HBG-2 score raises considerably. HGC27 also shows the presence of hemoglobin subunit beta (HBB) and hemoglobin subunit alpha (HBA). Curiously, stage IV cells (SNU16)do not show any types of hemoglobins. Methods Proteomic analysis was performed at the Rockefeller University, Proteomics Center as described in Hamidi et al., 2017 (7). Only proteins with Mascot scores of approximately 90 or >90 were considered (8) The proteomic analysis excel files and each correspondent sample details were generously and kindly shared and donated by Dr. David Lyden, Weill Cornell Medical College, New York, USA. Original data files can be found at https://zenodo.org/record/7556874#.Y8vkvXbP3IU
References 1. "Stomach (Gastric) Cancer".NCI.January 1980.Archived from the originalon 4 July 2014.Retrieved 1 July 2014 2. "5.4 Stomach Cancer". World Cancer Report 2014. 2014. 3. Wadhwa R, Taketa T, Sudo K, Blum MA, Ajani JA (June 2013). "Modern oncological approaches to gastric adenocarcinoma". Gastroenterology Clinics of North America.42 (2): 359–369. 4. https://www.atcc.org/products/crl-5971 5. T Akagi, T Kimoto Acta Med Okayama.1976 Jun;30(3):215-9.Human cell line (HGC-27) derived from the metastatic lymph node of gastric cancer 6. https://www.atcc.org/products/crl-5974 7. https://www.biorxiv.org/content/10.1101/202291v1 8. https://f1000research.com/articles/7-283

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