PMID- 26121872 OWN - NLM STAT- MEDLINE DCOM- 20150929 LR - 20190318 IS - 1672-173X (Print) IS - 1672-173X (Linking) VI - 46 IP - 3 DP - 2015 May TI - [Affinity Detection and Quantification of Receptors of TRAIL Based on Their Thermostability]. PG - 449-52 AB - OBJECTIVE: To develop a way for tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) receptors quantification in cancer via its' thermostability. METHODS: Endougenous alkaline phosphatase (AP) activity and denaturation temperature of pancreatic cancer cell lines AsPC-1 and Capan-2 were detected. Boiling treated recombinant protein death receptor 5 (DR5), named DR5 AP, as well as pancreatic cancer cells lines AsPC-1 and Capan-2 were incubated with AP-tagged TRAIL (AP-TRAIL), and then reacted with Reagent A and Reagent S, the substrate of AP, to quantitive and in site detection of the receptor. RESULTS: The endougenous AP activity of pancreatic cancer cells lines AsPC-1 and Capan-2 could not be totally inactivated by incubated at 65 degrees C, thus inhibited the detection of TRAIL receptor, but the activity was dramatically decreased after treated with boiling water, whereas the DR5-AP was thermal stable. The surface receptor of AsPC-1 and Capan-2 could be recognized and bound by AP-TRAIL after treated at 100 degrees C, the readings were 2. 210+/-0. 393 and 2. 027+/-0. 019. CONCLUSION: The TRAIL receptors are thermostable and this may provide a better diagnosis and prognosis of cancer as well as personalize cancer therapy. FAU - Xu, Yang AU - Xu Y FAU - Liu, Hai-peng AU - Liu HP FAU - Long, Tian-zhen AU - Long TZ FAU - Luo, Guang-ping AU - Luo GP FAU - Liang, Peng AU - Liang P LA - chi PT - Journal Article PL - China TA - Sichuan Da Xue Xue Bao Yi Xue Ban JT - Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition JID - 101162609 RN - 0 (Receptors, TNF-Related Apoptosis-Inducing Ligand) RN - 0 (Recombinant Proteins) SB - IM MH - Cell Line, Tumor MH - Hot Temperature MH - Humans MH - Pancreatic Neoplasms/*metabolism MH - Protein Stability MH - Receptors, TNF-Related Apoptosis-Inducing Ligand/*metabolism MH - Recombinant Proteins/metabolism EDAT- 2015/07/01 06:00 MHDA- 2015/09/30 06:00 CRDT- 2015/07/01 06:00 PHST- 2015/07/01 06:00 [entrez] PHST- 2015/07/01 06:00 [pubmed] PHST- 2015/09/30 06:00 [medline] PST - ppublish SO - Sichuan Da Xue Xue Bao Yi Xue Ban. 2015 May;46(3):449-52.