Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, R.o.c

Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan

Chun-Hung Yang

Mei-Hui Wang

Chia-Yu Hu

Hung-Man Yu

Mao-Chi Weng

Jyun-Hong Chen

The present invention relates to a hydroxamic acid-based contrast agent containing an isotope of fluorine, which comprises a compound having a structure of Formula (III):  wherein Rrepresents radioactive fluorine-18 (F) or isotope fluorine-19 (F), and Rrepresents hydroxyamine &#x2014;(NH)OH. The hydroxamic acid-based contrast agent containing an isotope of fluorine provided in the present invention has the capability of selectively inhibiting histone deacetylase (HDAC) subtypes 8/6/3, and specifically targets to the focus of spinocerebellar ataxia with over-activation of HDAC. By labeling with the radioisotope fluorine-18, a positron emission tomography (PET) image is obtained with the hydroxamic acid-based contrast agent containing radioisotope fluorine-18, whereby spinocerebellar ataxia is effectively detected. Therefore, the hydroxamic acid-based contrast agent containing an isotope of fluorine provided in the present invention is potentially useful as a probe for early diagnosis and evaluation of the therapeutic effect of spinocerebellar ataxia.

Hydroxamic acid type contrast agent containing radioisotope fluoride, preparation method and application thereof

The invention discloses a high-yield method for preparing a ribonucleic acid (RNA)-diethyltriamine pentaacetic acid (DTPA) conjugate. The conjugate is prepared by conjugating a RNA or locked nucleic acid (LNA) having an amino group to p-isothiocyanate benzyl-DTPA (SCN-Bn-DTPA) or DTPA anhydride with heating under microwave.

High-yield method for rapidly conjugating ribonucleic acid (RNA) to diethylenetriamine pentaacetic acid (DTPA)

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Taoyuan, Taiwan

Chun-Hung Yang