Determination of Aldehyde Dehydrogenase (ALDH) Isozymes in Human Cancer Samples - Comparison of Kinetic and Immunochemical Assays
نویسندگان
چکیده
A fluorimetric assay of aldehyde dehydrogenase isozymes, based on naphthaldehyde oxidation, is compared with Western Blotting analysis on several clinical samples obtained from surgery. The comparison reveals qualitatively good correlation of ALDH1A1 isozyme detection with two methods and somewhat worse on ALDH3A1 assay.
منابع مشابه
Activities of cytosolic aldehyde dehydrogenase isozymes in colon cancer: determination using selective, fluorimetric assays.
Activities of two principal cytosolic forms of human aldehyde dehydrogenase, ALDH1A1 and ALDH3AI in colon tumor homogenates and surrounding tissue fragments were measured, using isozymeselective, fluorimetric assays. The assays are based on two fluorogenic substrates, 6-methoxy-2-naphthaldehyde and 7-methoxy-l-naphthaldehyde, and are independent of NADH determinations. The results show high var...
متن کاملAldehyde dehydrogenase is used by cancer cells for energy metabolism
We found that non-small-cell lung cancer (NSCLC) cells express high levels of multiple aldehyde dehydrogenase (ALDH) isoforms via an informatics analysis of metabolic enzymes in NSCLC and immunohistochemical staining of NSCLC clinical tumor samples. Using a multiple reaction-monitoring mass spectrometry analysis, we found that multiple ALDH isozymes were generally abundant in NSCLC cells compar...
متن کاملAldehyde dehydrogenase inhibitors: a comprehensive review of the pharmacology, mechanism of action, substrate specificity, and clinical application.
Aldehyde dehydrogenases (ALDHs) belong to a superfamily of enzymes that play a key role in the metabolism of aldehydes of both endogenous and exogenous derivation. The human ALDH superfamily comprises 19 isozymes that possess important physiological and toxicological functions. The ALDH1A subfamily plays a pivotal role in embryogenesis and development by mediating retinoic acid signaling. ALDH2...
متن کاملFluorimetric detection of aldehyde dehydrogenase activity in human tissues in diagnostic of cancers of oral cavity.
Aldehyde dehydrogenase (ALDH) is known to be susceptible to oxidation, and its assays require stabilization of the enzyme by thiols. Application of the fluorimetric method to assay the ALDH activity in human saliva demonstrated significant differences between procedures utilizing glutathione (GSH) and dithiothreitol (DTT) as stabilizing agents. It has been recently shown that average aldehyde d...
متن کاملA novel aldehyde dehydrogenase-3 activator leads to adult salivary stem cell enrichment in vivo.
PURPOSE To assess aldehyde dehydrogenase (ALDH) expression in adult human and murine submandibular gland (SMG) stem cells and to determine the effect of ALDH3 activation in SMG stem cell enrichment. EXPERIMENTAL DESIGN Adult human and murine SMG stem cells were selected by cell surface markers (CD34 for human and c-Kit for mouse) and characterized for various other stem cell surface markers b...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2003