摘要:
An object of the present invention is to develop and provide a lung cancer differential marker with which lung cancer can be diagnosed conveniently and highly sensitively without depending only on increase or decrease in protein expression level between cancer patients and healthy persons. Another object of the present invention is to develop and provide a glycan marker capable of distinguishing histological types of lung cancer. Of serum glycoproteins, glycopeptide and glycoprotein groups whose glycan structures were altered specifically in lung cancer cell culture supernatants were identified, and they are provided as lung cancer differential markers.
摘要:
It is intended to develop and provide a method for detecting a particular glycan-isoform rapidly and specifically by a small number of steps. The present invention provides a glycan-isoform detection method comprising quantifying an immune complex formed by the mixing of a test sample with a sugar chain non-reducing terminal residue-binding lectin and an antibody specifically binding to the protein moiety of the glycan-isoform, etc., comparing the obtained amount of the immune complex with the amount of a control immune complex obtained when a control sample is not mixed with the sugar chain non-reducing terminal residue-binding lectin or is mixed with a control protein, and determining the presence or absence of the glycan-isoform of interest in the test sample on the basis of the difference between these amounts.
摘要:
The present invention is directed to developing a glycan markers capable of detecting a hepatic disease, and more specifically to developing a glycan marker indicating a hepatic disease-state. Furthermore, the present invention is also directed to developing a glycan marker capable of distinguishing hepatic disease-states with the progress of hepatocarcinoma. The present inventors identified, among the serum glycoproteins, glycopeptides and glycoproteins in which a glycan structure specifically changes due to a hepatic diseases including hepatocarcinoma and provide these as novel glycan markers (glycopeptide and glycoprotein) specific to hepatic disease-states.
摘要:
An object of the present invention is to provide a method for measuring a glycan-marker glycoprotein, by which liver disease can be detected with higher accuracy than is possible with conventional methods. Also, an object of the present invention is to provide a method for examining liver disease, by which liver disease can be detected with higher accuracy than is possible with conventional methods. Also, an object of the present invention is to provide a reagent for quantitative determination of a glycoprotein, which is used for the above measurement methods. Furthermore, an object of the present invention is to provide a glycan-marker glycoprotein as an index for clinical conditions of liver disease, which is capable of identifying the clinical conditions of liver disease depending on the progress of liver disease. The method for measuring a glycoprotein is characterized in that : the glycoprotein is at least one glycoprotein selected from alpha-1-acid glycoprotein (AGP) and Mac-2-binding protein (M2BP) contained in a sample collected from a subject; when the glycoprotein is AGP, AGP binding to a first lectin selected from AOL and MAL is measured; and when the glycoprotein is M2BP, M2BP binding to a second lectin selected from WFA, BPL, AAL, RCA120, and TJAII is measured.
摘要:
As a result of study of optimum conditions for the method of immobilizing a protein exhibiting an interaction with sugar chains on a substrate, it has been found that immobilization at an S/N ratio higher than in the prior art can be accomplished by applying a GTMS coat onto a surface of slide glass. Further, detection of any weak interaction between sugar chain and lectin with high sensitivity has been successfully accomplished by employing a substrate furnished with multiple reaction vessels lined with rubber having multiple holes and by carrying out lectin spotting and PBST washing. Moreover, through introduction of an evanescent excitation type scanner, it has become feasible to detect any interaction between lectin and sugar chain without the need to conduct washing removing operation for probe solution.