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- W2083183265 abstract "Polysialic acid (polySia) is a functional epitope and is known: 1) to regulate normal fertilization of lower vertebrates and invertebrates; 2) to be expressed on neural cell adhesion molecule (NCAM) when the formation or re-arrangement of nervous tissues takes place during embryonic stages as well as in adults of higher vertebrates; and 3) to be re-expressed in several human tumors. Thus, polySia serves as oncodevelopmental antigen. To date sensitive biochemical diagnostic probes (antibodies and endo-N-acylneuraminidase) to detect polySia are known. However, these reagents are not commercially available yet and they are only reactive to specific types of polySia structure. Moreover, precise information not only on diversity but also on the length or degree of polymerization (DP) of extended polySia chains is considered important in understanding the molecular mechanism of biosynthesis of polySia chains and fine-tuning of NCAM-NCAM adhesive interaction by polySia chain but cannot be obtained with these biochemical probes. We have been continuously making efforts to develop and improve the sensitivity of chemical methods for polySia analysis toward these challenging problems. This article presents our most recently developed chemical method for polySia analysis and its use in obtaining new information on DP of colominic acid samples and polySia chains present in rat brain tissues with the highest sensitivity that has ever been attained." @default.
- W2083183265 created "2016-06-24" @default.
- W2083183265 creator A5030736937 @default.
- W2083183265 creator A5079718541 @default.
- W2083183265 date "2001-07-01" @default.
- W2083183265 modified "2023-09-27" @default.
- W2083183265 title "A challenge to the ultrasensitive chemical method for the analysis of oligo- and polysialic acids at a nanogram level of colominic acid and a milligram level of brain tissues" @default.
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- W2083183265 doi "https://doi.org/10.1016/s0300-9084(01)01307-4" @default.
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