http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Makarieva, Tatyana N.,Tabakmaher, Ksenya M.,Guzii, Alla G.,Denisenko, Vladimir A.,Dmitrenok, Pavel S.,Shubina, Larisa K.,Kuzmich, Alexandra S.,Lee, Hyi-Seung,Stonik, Valentin A. American Chemical Society and American Society of 2011 Journal of natural products Vol.74 No.9
<P>New unusual polycyclic guanidine alkaloids monanchocidins B–E (<B>2</B>–<B>5</B>) along with monanchocidin A (<B>1</B>), which we recently described, were isolated from the Far-Eastern marine sponge <I>Monanchora pulchra</I>. Their structures were established using spectroscopic data and chemical transformations. Compounds <B>1</B>–<B>5</B> show potent cytotoxic activities against HL-60 human leukemia cells with IC<SUB>50</SUB> values of 540, 200, 110, 830, and 650 nM, respectively.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jnprdf/2011/jnprdf.2011.74.issue-9/np200452m/production/images/medium/np-2011-00452m_0007.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/np200452m'>ACS Electronic Supporting Info</A></P>
Shubina, Larisa K.,Makarieva, Tatyana N.,Denisenko, Vladimir A.,Dmitrenok, Pavel S.,Dyshlovoy, Sergey A.,von Amsberg, Gunhild,Glazunov, Valery P.,Silchenko, Artem S.,Stonik, Inna V.,Lee, Hyi-Seung NATURAL PRODUCT COMMUNICATIONS 2016 Natural product communications Vol.11 No.9
<P>As a result of the first study on secondary metabolites from the cosmopolitan bioluminescent marine tube polychaete Chaetopterus variopedatus, a new bicyclic guanidine alkaloid, 6-epi-monanchorin (1), along with the previously known monanchorin (2) were isolated. The structure of 1 was elucidated by spectroscopic and chemical methods, including a cleavage of the C-1-O-7 bond to obtain a secondary alcohol (3), which was used to determine the absolute configurations by Mosher's method. It was found that 1 and 2 were mainly accumulated in a secreted mucus special organ of the worm (food net), where green and blue-green microalgae were detected. A biosynthetic pathway to 6-epi-monanchorin and monanchorin from dietary polyenic fatty acid precursors was proposed.</P>
New Derivatives of Natural Acyclic Guanidine Alkaloids with TRPV Receptor-Regulating Properties
Ogurtsova, Ekaterina K.,Makarieva, Tatyana N.,Korolkova, Yuliya V.,Andreev, Yaroslav A.,Mosharova, Irina V.,Denisenko, Vladimir A.,Dmitrenok, Pavel S.,Lee, Yeon-Ju,Grishin, Eugene V.,Stonik, Valentin NATURAL PRODUCT COMMUNICATIONS 2015 Natural product communications Vol.10 No.7
Guzii, Alla G.,Makarieva, Tatyana N.,Denisenko, Vladimir A.,Dmitrenok, Pavel S.,Kuzmich, Aleksandra S.,Dyshlovoy, Sergey A.,von Amsberg, Gunhild,Krasokhin, Vladimir B.,Stonik, Valentin A. American Chemical Society 2016 ORGANIC LETTERS Vol.18 No.14
<P>Melonoside A (<B>1</B>), the first representative of a new class of ω-glycosylated fatty acid amides, was isolated from the Far Eastern marine sponge <I>Melonanchora kobjakovae</I>. The structure of <B>1</B>, including absolute configuration, was established using detailed analysis of 1D and 2D NMR, CD, and mass spectra as well as chemical transformations. Compound <B>1</B> induces autophagy of human cisplatin-resistant germinal tumor cells NCCIT-R.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/orlef7/2016/orlef7.2016.18.issue-14/acs.orglett.6b01678/production/images/medium/ol-2016-01678y_0007.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ol6b01678'>ACS Electronic Supporting Info</A></P>
Khanal, Prem,Kang, Bong Seok,Yun, Hyo Jeong,Cho, Hae-Guk,Makarieva, Tatyana Nikolaevna,Choi, Hong Seok Pharmaceutical Society of Japan 2011 BIOLOGICAL & PHARMACEUTICAL BULLETIN Vol.34 No.10
<P>Rhizochalin is a two-headed sphingolipid-like compound isolated from the sponge <I>Rhizochalina incrustata</I>. It has been reported that rhizocalin and its derivates have a chemopreventive and chemotherapeutic effect. However, the molecular mechanism of these effects is not understood. Here, we demonstrate that aglycon of rhizochalin (AglRhz) from the <I>Rhizochalina incrustata</I> induces AMP-activated protein kinase (AMPK) phosphorylation, and thereby inhibits mammalian target of rapamycin (mTOR)-p70S6 kinase-extracellular signal-regulated kinase (ERK) signaling and activator protein 1 (AP-1) activity <I>via</I> phosphorylation of Raptor in HT-29 cells. In addition, AglRhz induced activation of caspase-3 and poly(ADP-ribose) polymerase (PARP), and DNA fragmentation in HT-29 cells, leads to induction of apoptosis as well as suppression of tumorigenicity of HT-29 cells. Notably, AglRhz inhibits insulin-like growth factor (IGF)-1-induced AP-1 activity and cell transformation in JB6 Cl41 cells. Overall, our findings identify AMPK as an important target protein for mediating the anti-tumor properties of AglRhz in HT-29 colon cancer cells and have important implication for sponges, the most important marine source, in colon cancer.</P>
Jin, Jun-O,Shastina, Valeria,Park, Joo-In,Han, Jin-Yeong,Makarieva, Tatyana,Fedorov, Sergey,Rasskazov, Valery,Stonik, Valentin,Kwak, Jong-Young Pharmaceutical Society of Japan 2009 Biological & pharmaceutical bulletin Vol.32 No.6
<P>Two-headed sphingolipids bear a certain similarity with sphingolipids in the structure and but differing from classical sphingolipids in α,ω-position of the basic groups. We analyzed the apoptotic effects of some two-headed sphingolipids including rhizochalin (Rhz) and its derivatives isolated from sponge <I>Rhizochalina incrustata</I> on human leukemia HL-60 cells. Direct addition of Rhz induced apoptosis of HL-60 cells. The aglycon of Rhz, which has no galactosyl residue, showed a stronger ability to induce apoptotic activity than Rhz. Rhz congeners with acetate derivatives only weakly induced apoptosis. The usual mitochondrial membrane permeability changes and the decrease of protein levels of procaspases-8, -9, and -3 correlated with the apoptotic activity of Rhzs. These results suggest that derivatives of two-headed sphingolipids potently induce apoptosis in mammalian cells when administered exogenously and this cell death was dependent on caspase activation pathways.</P>