PMID- 27425849 OWN - NLM STAT- MEDLINE DCOM- 20170202 LR - 20170202 IS - 1873-3492 (Electronic) IS - 0009-8981 (Linking) VI - 460 DP - 2016 Sep 1 TI - Quantification of Rac1 and Rac1b in serum of non small cell lung cancer by label free real time assay. PG - 231-5 LID - S0009-8981(16)30308-4 [pii] LID - 10.1016/j.cca.2016.07.009 [doi] AB - BACKGROUND: Rac proteins play a major role in tumorogenesis. We quantified Rac1 and Rac1b in serum of non small cell lung cancer (NSCLC) patients. METHODS: The blood of 77 NSCLC patients and 52 healthy controls were collected and quantified the concentration of Rac1 and Rac1b mainly by surface plasmon resonance and it was verify by Western blot analysis. RESULTS: Rac1 and Rac1b were found to be significantly over expressed in serum of NSCLC patients compare to healthy controls. The level of Rac proteins were found to be increased in all stages of cancer. Despite the low survival rate, we managed to collect serum sample of the 18 follow up patients after the therapy, where 11 patients' of CR+PR group showed down regulation of the Rac protein after chemotherapy and unfortunately 80% patients died during the study period. CONCLUSION: The high specificity and sensitivity obtained from ROC analysis for Rac1 and Rac1b envisaged it to be used as a serum diagnostic marker in the early stage of cancer. CI - Copyright (c) 2016 Elsevier B.V. All rights reserved. FAU - Sahu, Vishal AU - Sahu V AD - Department of Biophysics, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India. FAU - Gupta, Abhishek AU - Gupta A AD - Department of Biophysics, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India. FAU - Kumar, Rahul AU - Kumar R AD - Department of Biophysics, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India. FAU - Gupta, Tarang AU - Gupta T AD - Department of Pulmonary Medicine and Sleep Disorders, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India. FAU - Mohan, Anant AU - Mohan A AD - Department of Pulmonary Medicine and Sleep Disorders, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India. FAU - Dey, Sharmistha AU - Dey S AD - Department of Biophysics, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India. Electronic address: sharmistha_d@hotmail.com. LA - eng PT - Journal Article DEP - 20160715 PL - Netherlands TA - Clin Chim Acta JT - Clinica chimica acta; international journal of clinical chemistry JID - 1302422 RN - 0 (Biomarkers, Tumor) RN - 0 (RAC1 protein, human) RN - EC 3.6.5.2 (rac GTP-Binding Proteins) RN - EC 3.6.5.2 (rac1 GTP-Binding Protein) SB - IM MH - Biomarkers, Tumor/blood MH - Blotting, Western MH - Carcinoma, Non-Small-Cell Lung/*blood/diagnosis/mortality MH - Case-Control Studies MH - Drug Therapy MH - Humans MH - Surface Plasmon Resonance MH - rac GTP-Binding Proteins/blood MH - rac1 GTP-Binding Protein/*blood OTO - NOTNLM OT - NSCLC OT - Protein marker OT - SPR OT - Serum EDAT- 2016/07/19 06:00 MHDA- 2017/02/06 06:00 CRDT- 2016/07/19 06:00 PHST- 2016/04/13 00:00 [received] PHST- 2016/06/13 00:00 [revised] PHST- 2016/07/13 00:00 [accepted] PHST- 2016/07/19 06:00 [entrez] PHST- 2016/07/19 06:00 [pubmed] PHST- 2017/02/06 06:00 [medline] AID - S0009-8981(16)30308-4 [pii] AID - 10.1016/j.cca.2016.07.009 [doi] PST - ppublish SO - Clin Chim Acta. 2016 Sep 1;460:231-5. doi: 10.1016/j.cca.2016.07.009. Epub 2016 Jul 15.