Ласман Владимир Александрович

Эл. почта: valas@kou.ibch.ru

Избранные публикации

  1. Gusarov D., Nekipelova V., Gusarova V., Lasman V., Bairamashvili D. (2009). Displacement effect during HPLC preparative purification of human insulin. J. Chromatogr. B Analyt. Technol. Biomed. Life Sci 877 (11-12), 1216–20 [+]

    HPLC plays a key role in the preparative purification of human insulin. A21-desamidoinsulin is one of the impurities that possesses the chromatographic behavior similar to that of insulin and hence separation from this by-product is rather difficult at the process scale. During the optimization of insulin reversed-phase HPLC purification, when a column was sufficiently overloaded, the effect of displacement of A21-desamidoinsulin molecules from active groups of sorbent by insulin ones was observed. It was suggested that monocarboxylic acid and organic modifier in mobile phase are responsible for the esterification during which the formed ester promotes the displacement effect. This effect was studied in order to optimize the purification of human insulin at the process scale.

  2. Gusarov D.A., Gusarova V.D., Mikhalev A.V., Lasman V.A., Bairamashvili D.I., Mironov A.F., Senatorova N.K., Senatorov A.V. (2009). [Validation of a method for monitoring of genetically engineered human insulin manufacture]. Bioorg. Khim. 35 (1), 55–61 [+]

    A method for monitoring the manufacture of genetically engineered human insulin by HPLC was developed. The method was validated by the estimation of its linearity, correctness, accuracy, specificity, and stability; the limits of detection and quantitative assessment were also determined. It was proven that HPLC analysis enables reliable and reproducible results to be obtained and can be used for monitoring insulin manufacture.

  3. Gusarova V., Vorobjeva T., Gusarov D., Lasman V., Bairamashvili D. (2007). Size-exclusion chromatography based on silica-diol for the analysis of the proinsulin fusion protein. J Chromatogr A 1176 (1-2), 157–62 [+]

    Size-exclusion chromatography based on silica-diol sorbent was employed to analyze the recombinant proinsulin fusion protein obtained during the process of refolding and the following ion-exchange purification. The assay was qualified as a control method estimating its accuracy, precision, linearity, limit of detection, limits of quantitation, specificity, and robustness. The results show the reliability for the intended use.