Name: multiplexed single-molecule force proteolysis measurements using magnetic tweezers
Uploaded: 2012-07-25T11:00:00
Description: Watch this Scientific Journal Video about Multiplexed Single-molecule Force Proteolysis Measurements Using Magnetic Tweezers at JoVE.com

Detta arbete stöddes av Burroughs Wellcome Karriär Award på den vetenskapliga Interface (ARD), National Institutes of Health genom NIH direktörens Nya Innovatör Award Program 1-DP2-OD007078 (ARD), William Bowes Jr Stanford Graduate Fellowship (ASA ) och Stanfords Kardiovaskulär Institute dy Predoctoral Fellowship (JC). Författarna tackar James Spudich för att låna ut mikroskopi utrustning.

1. Flödescell Framställning <ol><li> Täckglas (# 1.5, 22x22 mm och 22x40 mm, VWR) rengörs med ultraljud. <ol><li> Tillsätt täckglasen till en liten glasbehållare i stånd att hålla täckglasen och inpassning i sonikator (se steg 2). </li><li> Fylla behållaren med isopropanol och sonikera under en badsonikator under 20 minuter. </li><li> Kasta isopropanol och skölj täckglasen med rikliga mängder avjoniserat vatten som produceras av en Barnsted MilliQ apparat eller liknande anordning. Fylla behållaren med v...

<ol>
	<li>Ingber, D. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Can+cancer+be+reversed+by+engineering+the+tumor+microenvironment.">Can cancer be reversed by engineering the tumor microenvironment.</a> Semin. Cancer Biol. 18, 356-364 (2008).</li><li>Hahn, C., Schwartz, M. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mechanotransduction+in+vascular+physiology+and+atherogenesis.">Mechanotransduction in vascular physiology and atherogenesis.</a> Nat. Rev. Mol. Cell Biol. 10, 53-62 (2009).</li><li>Laurens, N., Koolwijk, P., de Maat, M. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fibrin+structure+and+wound+healing.">Fibrin structure and wound healing.</a> J. Thromb. Haemost. 4, 932-939 (2006).</li><li>Adhikari, A. S., Chai, J., Dunn, A. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mechanical+Load+Induces+a+100-Fold+Increase+in+the+Rate+of+Collagen+Proteolysis+by+MMP-1.">Mechanical Load Induces a 100-Fold Increase in the Rate of Collagen Proteolysis by MMP-1.</a> J. Am. Chem. Soc. 133, (2011).</li><li>Zareian, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Probing+collagen/enzyme+mechanochemistry+in+native+tissue+with+dynamic,+enzyme-induced+creep.">Probing collagen/enzyme mechanochemistry in native tissue with dynamic, enzyme-induced creep.</a> Langmuir. 26, (2010).</li><li>Ellsmere, J. C., Khanna, R. A., Lee, J. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mechanical+loading+of+bovine+pericardium+accelerates+enzymatic+degradation.">Mechanical loading of bovine pericardium accelerates enzymatic degradation.</a> Biomaterials. 20, 1143-1150 (1999).</li><li>Jesudason, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mechanical+forces+regulate+elastase+activity+and+binding+site+availability+in+lung+elastin.">Mechanical forces regulate elastase activity and binding site availability in lung elastin.</a> Biophys. J. 99, 3076-3083 (2010).</li><li>Neuman, K. C., Block, S. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Optical+trapping.">Optical trapping.</a> Rev. Sci. Instrum. 75, 2787-2809 (2004).</li><li>Lee, C. K., Wang, Y. M., Huang, L. S., Lin, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Atomic+force+microscopy:+determination+of+unbinding+force,+off+rate+and+energy+barrier+for+protein-ligand+interaction.">Atomic force microscopy: determination of unbinding force, off rate and energy barrier for protein-ligand interaction.</a> Micron. 38, 446-461 (2007).</li><li>Smith, S. B., Finzi, L., Bustamante, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Direct+mechanical+measurements+of+the+elasticity+of+single+DNA+molecules+by+using+magnetic+beads.">Direct mechanical measurements of the elasticity of single DNA molecules by using magnetic beads.</a> Science. 258, 1122-1126 (1992).</li><li>Tanase, M., Biais, N., Sheetz, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Magnetic+tweezers+in+cell+biology.">Magnetic tweezers in cell biology.</a> Methods Cell Biol. 83, 473-493 (2007).</li><li>Neuman, K. C., Nagy, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Single-molecule+force+spectroscopy:+optical+tweezers,+magnetic+tweezers+and+atomic+force+microscopy.">Single-molecule force spectroscopy: optical tweezers, magnetic tweezers and atomic force microscopy.</a> Nat. Methods. 5, 491-505 (2008).</li><li>Frank, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stabilization+of+short+collagen-like+triple+helices+by+protein+engineering.">Stabilization of short collagen-like triple helices by protein engineering.</a> J. Mol. Biol. 308, 1081-1089 (2001).</li><li>Stetefeld, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Collagen+stabilization+at+atomic+level:+crystal+structure+of+designed+(GlyProPro)10foldon.">Collagen stabilization at atomic level: crystal structure of designed (GlyProPro)10foldon.</a> Structure. 11, 339-346 (2003).</li><li>Chung, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Collagenase+unwinds+triple-helical+collagen+prior+to+peptide+bond+hydrolysis.">Collagenase unwinds triple-helical collagen prior to peptide bond hydrolysis.</a> EMBO J. 23, 3020-3030 (2004).</li><li>Bell, G. I. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Models+for+the+specific+adhesion+of+cells+to+cells.">Models for the specific adhesion of cells to cells.</a> Science. 200, 618-627 (1978).</li><li>Selvin, P. R., Ha, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Single-molecule techniques: a laboratory manual. , (2008).</li><li>Graneli, A., Yeykal, C. C., Prasad, T. K., Greene, E. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Organized+arrays+of+individual+DNA+molecules+tethered+to+supported+lipid+bilayers.">Organized arrays of individual DNA molecules tethered to supported lipid bilayers.</a> Langmuir. 22, 292-299 (2006).</li><li>Danilowicz, C., Greenfield, D., Prentiss, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dissociation+of+ligand-receptor+complexes+using+magnetic+tweezers.">Dissociation of ligand-receptor complexes using magnetic tweezers.</a> Anal. Chem. 77, 3023-3028 (2005).</li><li>Zhang, X., Halvorsen, K., Zhang, C. Z., Wong, W. P., Springer, T. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mechanoenzymatic+cleavage+of+the+ultralarge+vascular+protein+von+Willebrand+factor.">Mechanoenzymatic cleavage of the ultralarge vascular protein von Willebrand factor.</a> Science. 324, 1330-1334 (2009).</li><li>Woodside, M. T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nanomechanical+measurements+of+the+sequence-dependent+folding+landscapes+of+single+nucleic+acid+hairpins.">Nanomechanical measurements of the sequence-dependent folding landscapes of single nucleic acid hairpins.</a> Proc. Natl. Acad. Sci. U.S.A. 103, 6190-6195 (2006).</li><li>del Rio, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stretching+single+talin+rod+molecules+activates+vinculin+binding.">Stretching single talin rod molecules activates vinculin binding.</a> Science. 323, 638-641 (2009).</li><li>Gosse, C., Croquette, V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Magnetic+tweezers:+micromanipulation+and+force+measurement+at+the+molecular+level.">Magnetic tweezers: micromanipulation and force measurement at the molecular level.</a> Biophys. J. 82, 3314-3329 (2002).</li></ol>

Detta protokoll beskriver en ny användning för en klassisk enda molekyl teknik. Magnetiska pincett kan medelhög till hög kapacitet enda molekyl analyser i ett kostnadseffektivt sätt. Men liksom alla experimentella tekniker det finns utmaningar och potentiella fallgropar. Begränsningar av magnetiska pincetter Jämfört med en optisk fälla den rumsliga och tidsmässiga upplösningen av en MT anordning är låg. Vidare är de krafter som genereras av den enkla M...

<table border="1"><tbody><tr><td> Namn Reagens </td><td> Företaget </td><td> Katalognr </td></tr><tr><td> Micro täckglas # 1,5 (22x22) </td><td> VWR </td><td> 48366-067 </td></tr><tr><td> Micro täckglas # 1,5 (22x40) </td><td> VWR </td><td> 48393-048 </td></tr><tr><td> Lambda-DNA </td><td> Invitrogen </td><td> 25250-010 </td></tr><tr><td> T4 DNA-ligas </td><td> Invitrogen </td><td> 15224-041 </td></tr><tr><td> Microcon Ultracel YM-100 </td><td> Millipore </td><td> 42.413 </td></tr><tr><td> Anti-digoxigenin </td><td> Roche Diagnostics </td><td> 11-333-089-001 </td></tr><tr><td> Tween 20 </td><td> Sigma </td><td> P9416-100ML </td></tr&gt; <tr><td> Anti-myc-antikropp </td><td> Invitrogen </td><td> 46-0603 </td></tr><tr><td> Bovint serumalbumin </td><td> Sigma </td><td> B4287-5G </td></tr><tr><td> Dynabeads M-280 Streptavidin </td><td> Invitrogen </td><td> 658.01D </td></tr><tr><td> Dynabeads MyOne T1 Streptavidin </td><td> Invitrogen </td><td> 658.01D </td></tr><tr><td> p-aminofenylkvicksilveracetat </td><td> Calbiochem </td><td> 164.610 </td></tr><tr><td> Biotin-maleimid </td><td> Sigma Aldrich </td><td> B1267 </td></tr><tr><td> Biotin-märkt oligo </td><td> IDT-DNA </td><td> Anpassade syntes </td></tr><tr><td> Digoxigenin-märkt oligo </td><td> IDT-DNA </td><td> Anpassade syntes </td></tr><tr><td> Kollagenpeptid-genen </td><td> DNA-2,0 </td><td> Anpassade syntes </td></tr><tr><td> MMP-1-cDNA </td><td> Harvard Plasmiden Databas </td><td></td></tr><tr><td> z-översättare </td><td> Thorlabs </td><td> MTS50 </td></tr><tr><td> Servo Controller för översättare </td><td> Thorlabs </td><td> TDC001 </td></tr></tbody></table>

multiplexed single-molecule force proteolysis measurements using magnetic tweezers

Generering och detektering av mekaniska krafter är en allestädes närvarande del av cellens fysiologi, med direkt relevans för cancer metastaser 1, aterogenes 2 och sårläkning 3. I vart och ett av dessa exempel, celler både utövar kraft på sin omgivning och samtidigt enzymatiskt remodel den extracellulära matrisen (ECM). Effekten av krafter på ECM har därmed blivit ett område av stort intresse på grund av dess sannolika biologiska och medicinsk betydelse 4-7. Enda molekyl tekniker såsom optisk svällning 8, atomkraftsmikroskopi 9, och magnetiska pincett 10,11 låta forskare att undersöka funktionen hos enzymer på molekylär nivå genom att utöva krafter på enskilda proteiner. Av dessa tekniker, magnetiska pincett (MT) är anmärkningsvärda för sin låga kostnad och hög genomströmning. MT utövar krafter i intervallet ~ 1-100 PN och kan ge millisekund temporal upplösning,kvaliteter som är väl anpassade till att studera enzym-mekanism på en enda molekyl nivå 12. Här rapporterar vi en mycket parallelliserbart MT-analys för att studera effekten av kraft på proteolys av enstaka proteinmolekyler. Vi presenterar det särskilda exemplet av proteolys av en trimer kollagen peptid av matrismetalloproteinasaktivitet 1 (MMP-1), men kan denna analys kan enkelt anpassas för att studera andra substrat och proteaser.

Watch this Scientific Journal Video about Multiplexed Single-molecule Force Proteolysis Measurements Using Magnetic Tweezers at JoVE.com

Multiplexed Single-molecule Force Proteolysis Measurements Using Magnetic Tweezers

I den här artikeln beskriver vi användandet av magnetiska pincett för att studera effekten av kraft på enzymatisk proteolys vid den enda molekyl nivå på ett mycket parallelliserbart sätt.

Multiplexade enda molekyl Force proteolys Mätningar med Magnetic pincett

The  generation and detection of mechanical forces is a ubiquitous aspect of cell physiology,  with direct relevance to cancer metastasis1, atherogenesis2 ...

Research

JoVE Journal

Bioengineering

Stretching Short Sequences of DNA with Constant Force Axial Optical Tweezers

Stretching korta sekvenser av DNA med konstant kraft Axial optisk pincett

Single-molecule techniques for stretching DNA of contour lengths  less than a kilobase are fraught with experimental difficulties. However, many ...

Flexural Rigidity Measurements of Biopolymers Using Gliding Assays

Böjstyvhet Mätningar av Biopolymerer Använda Gliding Analyser

Microtubules are cytoskeletal polymers which  play a role in cell division, cell mechanics, and intracellular transport. Each of these functions requires ...

Investigating Receptor-ligand Systems of the Cellulosome with AFM-based Single-molecule Force Spectroscopy

Undersöka Receptor-ligand System av Cellulosome med AFM-baserad Single-molekyl Force spektroskopi

Cellulosomes are discrete multienzyme complexes used by a subset of anaerobic bacteria and fungi to digest lignocellulosic substrates. Assembly of the ...

Magnetic Tweezers for the Measurement of Twist and Torque

Magnetiska pincett för Mätning av Twist och vridmoment

Single-molecule techniques make it possible to investigate the behavior of individual biological molecules in solution in real time. These techniques ...

High-resolution Spatiotemporal Analysis of Receptor Dynamics by Single-molecule Fluorescence Microscopy

Högupplöst Spatiotemporal Analys av Receptor Dynamics av ​​Single-molekyl fluorescensmikroskopi

Single-molecule microscopy is emerging as a powerful approach to analyze the behavior of signaling molecules, in particular concerning those aspect (e.g., ...

Single Molecule Fluorescence Microscopy on Planar Supported Bilayers

Enda molekyl fluorescensmikroskopi på Planar bilayers stöds

In the course of a single decade single molecule microscopy has changed from being a secluded domain shared merely by physicists with a strong background ...

Label-free Single Molecule Detection Using Microtoroid Optical Resonators

Label-fri enda molekyl Detection Använda Microtoroid optiska resonatorer

Detecting small concentrations of molecules down to the single molecule limit has impact on areas such as early detection of disease, and fundamental ...

Rapid Scan Electron Paramagnetic Resonance Opens New Avenues for Imaging Physiologically Important Parameters In Vivo

Rapid Scan Electron Paramagnetic Resonance Opens New Avenues for Imaging Physiologically Important Parameters In Vivo

Snabb Scan elektronspinnresonans öppnar nya vägar för Imaging fysiologiskt viktiga parametrar<em&gt; In Vivo</em

We demonstrate a superior method of 2D spectral-spatial imaging of stable radical reporter molecules at 250 MHz using rapid-scan ...

A Guide to Build a Highly Inclined Swept Tile Microscope for Extended Field-of-view Single-molecule Imaging

En Guide till att bygga ett starkt lutande svepte kakel Mikroskop för utökat fält-of-view Single-molekyl Imaging

Single-molecule imaging has greatly advanced our understanding of molecular mechanisms in biological studies. However, it has been challenging to obtain ...

Characterizing Single-Molecule Conformational Changes Under Shear Flow with Fluorescence Microscopy

Karaktäriserande konformationsförändringar med en molekyl under skjuvningsflöde med fluorescensmikroskopi

Single-molecule behavior under mechanical perturbation has been characterized widely to understand many biological processes. However, methods such as ...