Results 71 to 80 of about 16,951 (259)

Mitochondria and Neuromast Tagging With Fluorescent Gallium‐Triapine Analogues: In Cellulo MP FLIM and Zebrafish Live Imaging

Advanced Science, EarlyView.
Fluorescent BODIPY‐conjugated thiosemicarbazone ligands and their Ga(III), In(III), and Fe(III) complexes, inspired by Triapine, are developed as theranostic agents. Multiphoton FLIM and confocal microscopy in cancer cells and zebrafish reveal real‐time uptake, mitochondrial localisation, and whilst spectroscopic assays indicated preserved complex ...
Megan J. Green, Michael W. Jones, Merissa Saleem, Haobo Ge, Melita Tvardauskaite, Julia Dudzic, Fernando Cortezon‐Tamarit, Rory L. Arrowsmith, Charareh Pourzand, Gabriele Kociock‐Kohn, Nicholas H. Rees, Jonathan R. Dilworth, Stephen Faulkner, Stanley W. Botchway, David Gurevich, Sofia I. Pascu   +15 more
wiley   +1 more source

Piezo1 Channel Mediates Mechanically Programmable Drug Delivery to Potentiate Intravesical Chemotherapy

Advanced Science, EarlyView.
This study utilizes programmable mechanical pressure as a therapeutic enhancer to establish a mechano‐chemotherapy strategy. Controlled pressure activates the mechanosensitive ion channel Piezo1 in bladder cancer, triggering a calcium ion cascade that transiently and reversibly amplifies membrane permeability to chemotherapeutics.
Minghai Ma, Xing Li, Minxuan Jing, Zezhong Yang, Jiale He, Jianpeng Li, Xiao Liang, Yunzhong Jiang, Rou Huang, Yuanquan Zhang, Yuanchun Pu, Jiawei Xiu, Yutong Chen, Kaibo Mi, Pu Zhang, Lei Wang, Jinhai Fan   +16 more
wiley   +1 more source

Direct Observation of DNA Untangling Magic by a Type-II DNA Topoisomerase [PDF]

Biophysical Journal, 2009
Type-II DNA topoisomerases(topoII) are ubiquitous enzymes that play key roles in the maintenance of DNA topology in cells. They control the degree of supercoiling of DNA and untangle the catenanes that arise during replication or recombination. Lack of their activities during cell division ultimately causes cell death. TopoII untangles DNA catenanes in
Yogo, Katsunori, Ogawa, Taisaku, Obata, Saki, Nakajima, Gen, Suzuki, Junpei, Kinosita, Kazuhiko   +5 more
openaire   +1 more source

Mechanically Triggered DNA Nanovehicles for Targeted Dual‐Drug Cancer Therapy

Advanced Science, EarlyView.
A mechanically triggered DNA nanovehicle is introduced that co‐releases two anticancer drugs in response to integrin‐mediated cellular forces. Cholesterol‐anchored DNA assemblies undergo force‐induced unfolding at cell–cell junctions, enabling selective, localized dual‐drug activation in cancer cells while minimizing off‐target toxicity in low‐tension ...
Murali Mohana Rao Singuru, Priyanka Bhattacharyya, Mingxu You   +2 more
wiley   +1 more source

The antimicrobial activity of exogeno us anionic phospholipids against Mycobacterium tuberculosis and Escherichia coli

Тонкие химические технологии, 2016
The effect of anionic phospholipids, namely, cardiolipin, phosphatidylglycerol and phosphatidic acid, on the growth of gram-negative bacteria E. coli BL21(DE3), as well as gram-positive bacteria M. tuberculosis H37Rv was investigated in this study.
Yu. L. Mikulovich, G. M. Sorokoumova, А. А. Selishcheva, V. I. Shvets   +3 more
doaj   +1 more source

Topoisomerase IIβ targets DNA crossovers formed between distant homologous sites to induce chromatin opening

Scientific Reports, 2020
Type II DNA topoisomerases (topo II) flip the spatial positions of two DNA duplexes, called G- and T- segments, by a cleavage-passage-resealing mechanism. In living cells, these DNA segments can be derived from distant sites on the same chromosome.
Mary Miyaji, Ryohei Furuta, Osamu Hosoya, Kuniaki Sano, Norikazu Hara, Ryozo Kuwano, Jiyoung Kang, Masaru Tateno, Kimiko M. Tsutsui, Ken Tsutsui   +9 more
doaj   +1 more source

Fluorescently labeled circular DNA molecules for DNA topology and topoisomerases [PDF]

, 2016
DNA topology plays essential roles in several fundamental biological processes, such as DNA replication, recombination, and transcription. Typically agarose gel electrophoresis is employed to study DNA topology.
Berrido, Andrea, Chambers, Jeremy W., Gonzalez, Walter, Gu, Maxwell, Leng, Fenfei, Miksovska, Jaroslava   +5 more
core   +1 more source

Tightening of DNA knots by supercoiling facilitates their unknotting by type II DNA topoisomerases [PDF]

Proceedings of the National Academy of Sciences, 2011
Using numerical simulations, we compare properties of knotted DNA molecules that are either torsionally relaxed or supercoiled. We observe that DNA supercoiling tightens knotted portions of DNA molecules and accentuates the difference in curvature between knotted and unknotted regions. The increased curvature of knotted regions is expected to make them
Witz G, Dietler G, Stasiak A
openaire   +3 more sources

Photodynamic Priming and Minocycline Overcome Chemoresistance by Reprogramming the Pancreatic Tumor Immune Microenvironment In Vivo

Advanced Science, EarlyView.
Dual priming with minocycline and photodynamic priming reprograms the pancreatic tumor microenvironment to overcome chemoresistance. By suppressing DNA repair enzyme Tdp1, inducing photooxidative damage, and enhancing irinotecan delivery via light‐activated nanoencapsulation, this strategy remodels the tumor microenvironment and drives immune ...
Fernanda V. Cabral, Jose Quilez‐Alburquerque, Olivia Mooradian, Shivendran Vytheswarran, Badri Parshad, Girgis Obaid, Huang‐Chiao Huang, Tayyaba Hasan   +7 more
wiley   +1 more source

Single-molecule experiments in biological physics: methods and applications

, 2006
I review single-molecule experiments (SME) in biological physics. Recent technological developments have provided the tools to design and build scientific instruments of high enough sensitivity and precision to manipulate and visualize individual ...
, , , , , Adachi K, Adelman K, Ahsan A, Alberts B, Allahverdyan A, Allemand J F, Altan-Bonnet G, Ashkin A, Ashkin A, Ashkin A, Ashkin A, Ashkin A, Ashkin A, Astumian R D, Astumian R D, Baumann C G, Baumann C G, Bell G I, Bennett C H, Bennink M L, Bennink M L, Bensimon D, Best R B, Bhasin N, Bhattacharjee S M, Bhattacharjee S M, Binnig G, Binnig G, Blanchard S C, Blickle V, Block S M, Block S M, Bloomfield V A, Bochkov G N, Bockelmann U, Boroudjerdi H, Bouchiat C, Braslavsky I, Brower-Toland B D, Brujic J, Bryant Z, Bundschuh R, Burgess S A, Bustamante C, Bustamante C, Bustamante C, Bustamante C, Calladine C R, Carl P, Carrion-Vazquez M, Carrion-Vazquez M, Carrion-Vazquez M, Carter N J, Carter N J, Causo M S, Charvin G, Chatenay D, Chen S-J, Ciliberto S, Clausen-Schaumann H, Cluzel P, Cocco S, Cocco S, Cocco S, Cocco S, Cocco S, Cohen E G D, Cohen E G D, Cohen E G D, Crooks G E, Crooks G E, Cross R A, Cuesta-Lopez S, Cui Y, Cui Y, Cule D, Czajkowsky D M, Córdova N J, Daban J R, Dammer U, Dammer U, Danilowicz C, Davenport R J, De Duve C, Dekker N H, Deng H, Discher D E, Dohoney K M, Douarche F, Eisenberg E, Engel A, Essevaz-Roulet B, Evans D J, Evans E, Evans E, Evans E, Evans E, Evans E, F Ritort, Fain B, Fernandez J M, Fernandez J M, Fernandez J M, Finer J T, Finkelstein A V, Finzi L, Fisher M E, Florin E L, Flyvbjerg H, Forde N R, Forkey J N, Frank-Kamentskii M D, Frechet J M, Fritz J, Fréchet J M J, Gallavotti G, Garces-Chavez V, Garcia-Manyes S, Gelles J, Gelles J, Gelles J, Gergely C, Gerland U, Gerland U, Gerland U, Gestland R F, Goel A, Goel A, Gordon M P, Gore J, Gore J, Gosse C, Grange W, Green N H, Grier D G, Gross D H E, Ha T, Ha T, Hafner J H, Hanggi P, Hanke A, Hanley W, Hansen J C, Haran G, Harlepp S, Herschlag D, Higgs P G, Hill T L, Hill T L, Hinterdorfer P, Howard J, Hummer G, Hummer G, Hwa T, Hyeon C, Inoue A, Isralewitz B, Jarzynski C, Jarzynski C, Jarzynski C, Jarzynski C, Jensen M O, Jeruzalmi D, Junier I Ritort F, Jülicher F, Kafri Y, Katritch V, Kawakami M, Keller D, Keller D, Kellermayer M S K, Kellermayer M S, Kim H D, Kindt J, Kitamura K, Klimov D K, Klug A, Konrad M W, Kosikov K M, Kosztin I, Kramers H A, Kukowska-Latallo J F, Kunze K-K, Kurchan J, Kühner F, Ladoux B, Lang M J, Lang M J, Law R, Lebowitz J L, Lebrun A, Lee G U, Lee G U, Leger J F, Leuba S H, Leuva S H, Lhua R C, Li P T X Bustamante C Tinoco I, Liphardt J, Liu F, Lu H, Léger J F, Maes C, Maes C, Maier B, Manosas M, Manosas M Wen J D Li P T X Smith S B Bustamante C Tinoco I Ritort F, Marko J, Marko J, Marko J F, Marszalek P E, Marszalek P E, Marszalek P E, Masaike T, Mathews D H, Mazonka O Jarzynski C, McGurn A R, Merkel R, Min W, Moffitt J R, Molloy J E, Moy V T, Muller D J, Munoz V, Müller D J, Müller M, Müller M, Nayashima M, Nelson D R, Nguyen T T Grossberg A Y Shklovskii B I Holm C Kekicheff P Podgornik R, Noji H, Noy A, Oberhauser A F, Onoa B, Onoa B, Onuchic J N, Oono Y, Orland H, Orlandini E, Orphanides G, Paci E, Pagnani A, Pan J, Pant K, Park S, Pauling L, Perret E, Peyrard M, Phillips W D, Poirier M G, Poland D, Poland D, Purohit P K, Qian H, Qu X, Rief M, Rief M, Rief M, Rief M, Rief M, Rief M, Ritort F, Ritort F, Ritort F, Ritort F, Ros R, Rouzina I, Rouzina I, Rubinstein M, Saleh O A, Sarkar A, Schiessel H, Schiessel H, Schlierf M, Schroeder R, Schumakovitch I, Schurr J M, Schwesinger F, Seifert U, Sellers J R, Shaevitz J W, Smith B L, Smith D E, Smith S B, Soong R K, Sosnick T R, Speck T, Spudich A, Strick T, Strick T R, Strick T R, Strick T R, Strunz T, Svoboda K, Tanaka H, Thirumalai D, Thurmond K B, Tinoco I, Tinoco I, Tinoco I, Tinoco I, Tinoco I, Treiber D K, Treiber D K, Trepagnier E H, Tsallis C, Uemura S, Uptain S M, Valpuesta J M, Vanzi F, Veigel C, Veigel C, Visscher K, Vologodskii A, Wang M D, Wang M D, Wartell R M, Watson J D, Watson J D, Wen J D Manosas M Li P T X Smith S B Bustamante C Ritort F Tinoco I, Wenner J R, Widom J, Wiita A P, Wilkins M H F, Williams M C, Williams M C, Williams M C, Williams P M, Williams P M, Wood R H, Woodcock C L, Wuite G J L, Xie Z, Yager T D, Yang G, Yasuda R, Yasuda R, Yildiz A, Yildiz A, Yin H, Zandi R, Zarrinkar P, Zhou H, Zhuang X, Zuckermann D M, Zuker M, Zwanzig R W   +351 more
core   +1 more source