2730-71-4Relevant academic research and scientific papers
Synthesis, anticancer activity and molecular docking studies of N-deacetylthiocolchicine and 4-iodo-N-deacetylthiocolchicine derivatives
Klejborowska, Greta,Urbaniak, Alicja,Maj, Ewa,Wietrzyk, Joanna,Moshari, Mahshad,Preto, Jordane,Tuszynski, Jack A.,Chambers, Timothy C.,Huczyński, Adam
, (2021)
Colchicine is a plant alkaloid with a broad spectrum of biological and pharmacological properties. It has found application as an anti-inflammatory agent and also shows anticancer effects through its ability to destabilize microtubules by preventing tubulin dimers from polymerizing leading to mitotic death. However, adverse side effects have so far restricted its use in cancer therapy. This has led to renewed efforts to identify less toxic derivatives. In this article, we describe the synthesis of a set of novel double- and triple-modified colchicine derivatives. These derivatives were tested against primary acute lymphoblastic leukemia (ALL-5) cells and several established cancer cell lines including A549, MCF-7, LoVo and LoVo/DX. The novel derivatives were active in the low nanomolar range, with 7-deacetyl-10-thiocolchicine analogues more potent towards ALL-5 cells while 4-iodo-7-deacetyl-10-thiocolchicine analogues slightly more effective towards the LoVo cell line. Moreover, most of the synthesized compounds showed a favorable selectivity index (SI), particularly for ALL-5 and LoVo cell lines. Cell cycle analysis of the most potent molecules on ALL-5 and MCF-7 cell lines revealed contrasting effects, where M-phase arrest was observed in MCF-7 cells but not in ALL-5 cells. Molecular docking studies of all derivatives to the colchicine-binding site were performed and it was found that five of the derivatives showed strong β-tubulin binding energies, lower than ?8.70 kcal/mol, while the binding energy calculated for colchicine is ?8.09 kcal/mol. The present results indicate that 7-deacetyl-10-thiocolchicine and 4-iodo-7-deacetyl-10-thiocolchicine analogues constitute promising lead compounds as chemotherapy agents against several types of cancer.
Synthesis and antitumour activity of novel colchicine C-10 derivatives
Shen, Li Hong,Zhang, Le,Wang, Hai Xian,Wang, Xin,Zhang, Gai Jiao
, p. 7475 - 7476 (2014)
A series of new colchicine C-10 derivatives (2a-i, 3a-h) were synthesized by replacement of the 10-methoxy with NR2 and SCH3 in order to determine their cytotoxic activity. The compounds were synthesized in good yield and the structures of all newly synthesized compounds were established on the basis of their IR, 1H NMR and elemental analysis. The synthesized compounds were tested in vitro antitumor activity against four human cancer cell lines by MTT assay. It was found that many of the derivatives displayed significant activity, particularly, compound 2a and 2b showed more potent cytotoxic activities than colchicine.
Synthesis, antiproliferative activity and molecular docking of thiocolchicine urethanes
Majcher, Urszula,Urbaniak, Alicja,Maj, Ewa,Moshari, Mahshad,Delgado, Magdalena,Wietrzyk, Joanna,Bartl, Franz,Chambers, Timothy C.,Tuszynski, Jack A.,Huczyński, Adam
, p. 553 - 566 (2018)
A number of naturally occurring compounds such as paclitaxel, vinblastine, combretastatin, and colchicine exert their therapeutic effect by changing the dynamics of tubulin and its polymer form, microtubules. The identification of tubulin as a potential target for anticancer drugs has led to extensive research followed by clinical development of numerous compounds from several families. In this paper we report on the design, synthesis and in vitro evaluation of a group of thiocolchicine derivatives, modified at ring-B, labelled here compounds 4–14. These compounds have been obtained in a simple reaction of 7-deacetyl-10-thiocolchicine 3 with eleven different alcohols in the presence of triphosgene. These novel agents have been checked for anti-proliferative activity against four human cancer cell lines and their mode of action has been confirmed as colchicine binding site inhibition (CBSI) using molecular docking. Molecular simulations provided rational tubulin binding models for the tested compounds. On the basis of in vitro tests, derivatives 4–8 and 14 demonstrated the highest potency against MCF-7, LoVo and A549 tumor cell lines (IC50 values = 0.009–0.014 μM). They were more potent and characterized by a higher selectivity index than several standard chemotherapeutics including cisplatin and doxorubicin as well as unmodified colchicine. Further, studies revealed that colchicine and its several derivatives arrested MCF-7 cells in mitosis, while its selected derivatives caused microtubule depolymerization.
Antitumor Agents-CLXXV. Anti-tubulin action of (+)-thiocolchicine prepared by partial synthesis
Shi, Qian,Verdier-Pinard, Pascal,Brossi, Arnold,Hamel, Ernest,Lee, Kuo-Hsiung
, p. 2277 - 2282 (1997)
(+)-Thiocolchicine (2b) was prepared from (±)-colchicine (1) in a five-step reaction sequence that included chromatographic separation of appropriate camphanylated diastereomers. Acid hydrolysis of the (+)-diastereomer, followed by acetylation, yielded the desired product 2b. (+)-Thiocolchicine has 15-fold lower inhibitory activity against tubulin polymerization than (-)-thiocolchicine, and is 29-fold less potent for inhibiting growth of human Burkitt lymphoma cells. The enantiomer 2a, prepared from the (-)-camphanylated diastereomer, had potent activity in all assays comparable to that of (-)-thiocolchicine prepared by other methods. These results support the hypothesis that the proper configuration of colchicine-related compounds is an important requirement for their anti-tubulin action.
Photochemical Isomerization of Colchicine and Thiocolchicine
Bussotti, Laura,Cacelli, Ivo,D'Auria, Maurizio,Foggi, Paolo,Lesma, Giordano,Silvani, Alessandra,Villani, Vincenzo
, p. 9079 - 9085 (2003)
The photochemical reactivity of colchicine and thiocolchicine is described. Although the irradiation of colchicine gave a well-known transposition reaction to β- and γ-lumicolchicines, thiocolchicine did not react. Femtosecond transient spectroscopy of colchicine showed a strong band with maximum at 510 nm appearing at τ = 0. It disappeared within few hundred femtoseconds, leaving a broad structureless band with a maximum around 470 nm. A second band is observed around 410 nm. The analysis in time showed that the 510-nm component appeared instantaneously and decayed following a biexponential low with time constants of 300 ± 100 fs and 40 ps. The kinetics at 420 nm has a measurable rise time of 300 ± 150 fs. Quantum mechanical calculations on colchicine showed that this absorption is due to a S 1 → S11 transition. In thiocolchicine, the instantaneous formation of a structure with maxima out of the investigated spectral region was observed. A strong absorption around 650 nm indicated the presence of a band with a maximum at longer wavelengths (> 700 nm) and a peak around 380 nm, which partially coincides with the ground-state absorption and therefore strongly affected by its bleaching. The instantaneous formation of an absorption around 650 nm and its rapid (～500 fs) decay was observed. At shorter wavelengths (400 nm), the decay was fitted with a biexponential curve with the first time constant of about 80 ps. The second part of the decay had a very long tail up to 500 ps. Transient spectroscopy and configuration interaction calculations are in agreement with a mechanism involving a disrotatory cyclization of colchicine in its first excited singlet state. The lack of reactivity observed in thiocolchicine was explained by considering the presence of efficient ISC to the triplet state.
Derivatives of thiocolchicine and its applications to CEM cells treatment using 19F Magnetic Resonance ex vivo
Bartusik, Dorota,Tomanek, Boguslaw,Lattova, Erika,Perreault, Helene,Tuszynski, Jack,Fallone, Gino
, p. 1 - 6 (2010)
It was shown, that cultured ex vivo human T-Lymphoblastoid (CEM) cells respond to synthesized thiocolchicine and fluorine thiocolchicine derivatives. The preparation of derivatives with substitution at C-3 and C-7 is described. All compounds were used at concentration from 1 nM to 1000 nM. Inhibitory effects of these compounds were examined in the three-dimensional (3-D) culture and cells morphology during treatment was monitored using 9.4 T MRI system. We performed studies of these compounds in CEM cells ex vivo using 1H and 19F Magnetic Resonance Imaging (MRI), 19F Magnetic Resonance Spectroscopy (MRS), High Performance Liquid Chromatography coupled with Ultra Violet (HPLC-UV) and Electron Impact Mass Spectrometry (EIMS). The results of the multi-technique approach are consistent with the fact that the new derivatives are more efficient than colchicine and thiocolchicine ex vivo. Crown Copyright
Antiproliferative activity and molecular docking of novel double-modified colchicine derivatives
Majcher, Urszula,Klejborowska, Greta,Moshari, Mahshad,Maj, Ewa,Wietrzyk, Joanna,Bartl, Franz,Tuszynski, Jack A.,Huczyński, Adam
, (2018)
Microtubules are tubulin polymer structures, which are indispensable for cell growth and division. Its constituent protein β-tubulin has been a common drug target for various diseases including cancer. Colchicine has been used to treat gout, but it has also been an investigational anticancer agent with a known antimitotic effect on cells. However, the use of colchicine as well as many of its derivatives in long-term treatment is hampered by their high toxicity. To create more potent anticancer agents, three novel double-modified colchicine derivatives have been obtained by structural modifications in C-4 and C-10 positions. The binding affinities of these derivatives of colchicine with respect to eight different isotypes of human β-tubulin have been calculated using docking methods. In vitro cytotoxicity has been evaluated against four human tumor cell lines (A549, MCF-7, LoVo and LoVo/DX). Computer simulations predicted the binding modes of these compounds and hence the key residues involved in the interactions between tubulin and the colchicine derivatives. Two of the obtained derivatives, 4-bromothiocolchicine and 4-iodothiocolchicine, were shown to be active against three of the investigated cancer cell lines (A549, MCF-7, LoVo) with potency at nanomolar concentrations and a higher relative affinity to tumor cells over normal cells.
7-Deacetyl-10-alkylthiocolchicine derivatives-new compounds with potent anticancer and fungicidal activity
Kurek, Joanna,Kwa?niewska-Sip, Patrycja,Myszkowski, Krzysztof,Cofta, Grzegorz,Murias, Marek,Barczyński, Piotr,Jasiewicz, Beata,Kurczab, Rafa?
, p. 1708 - 1714 (2018)
A series of new semi-synthetic 7-deacetyl-10-alkylthiocolchicne derivatives with ethyl, n-propyl, i-propyl and n-butyl substituents were synthesised and characterised by spectroscopic methods, elemental analysis, DFT calculations and molecular docking simulations. All the synthesized compounds have been tested for fungicidal and anticancer activities against SKOV-3, LoVo, MCF-7, MDA-MB-231 and the lung-derived fibroblast CCD39Lu. All the new colchicine derivatives exhibit significantly higher cytotoxicity towards the SKOV-3 tumour cell line than the natural product-colchicine. The most effective cytotoxic agents were 7-deacetyl-10-n-buthylthiocolchicine and 7-deacetyl-10-i-propylthiocolchicine. Among all the compounds tested, 7-deacetyl-10-n-buthylthiocolchicine exhibited the highest fungicidal activity. Molecular modeling indicated that several mutations found in the β-tubulin unit of the tested fungal strains are crucial for antifungal activity and selectivity of 7-deacetyl-10-n-buthylthiocolchicine. The obtained results may be useful for the development of selective colchicine derivatives as effective fungicidal and/or anticancer drugs.
METHODS AND USES OF COLCHICINE DERIVATIVES
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Page/Page column 53, (2020/01/24)
Colchicine derivative(s), method(s) and use(s) thereof for treatment of inflammation. In certain embodiments, the colchicine derivative is a compound of Formula I: (I)
Synthesis and antiproliferative screening of novel analogs of regioselectively demethylated colchicine and thiocolchicine
Czerwonka, Dominika,Huczyński, Adam,Katrusiak, Andrzej,Maj, Ewa,Sobczak, Szymon,Wietrzyk, Joanna
supporting information, (2020/03/17)
Colchicine, a pseudoalkaloid isolated from Colchicum autumnale, has been identified as a potent anticancer agent because of its strong antimitotic activity. It was shown that colchicine modifications by regioselective demethylation affected its biological properties. For demethylated colchicine analogs, 10-demethylcolchicine (colchiceine, 1) and 1-demethylthiocolchicine (3), a series of 12 colchicine derivatives including 5 novel esters (2b-c and 4b-d) and 4 carbonates (2e-f and 4e- f) were synthesized. The antiproliferative activity assay, together with in silico evaluation of physicochemical properties, confirmed attractive biological profiles for all obtained compounds. The substitutions of H-donor and H-acceptor sites at C1 in thiocolchicine position provide an efficient control of the hydration affinity and solubility, as demonstrated for anhydrate 3, hemihydrate 4e and monohydrate 4a.
