Name: isolation and characterization of extracellular vesicles from adult schistosoma japonicum
Uploaded: 2018-05-22T13:00:00
Description: Watch this Scientific Journal Video about Isolation and Characterization of Extracellular Vesicles from Adult Schistosoma japonicum at JoVE.com

This study was, in part or in whole, supported by National Natural Science Foundation of China (31472187 and 31672550) and The Agricultural Science and Technology Innovation Program of the Chinese Academy of Agricultural Sciences.

All animal experiments were approved by the local ethics committee of Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (Permit Number: SHVRIAU-14-0101).
1. In Vitro Culture of Schistosomes
Note:&#160;Schistosomes represent a biohazard. Workers should wear latex gloves at all times when handling worms, schistosomal suspensions, or other related biological materials. New Zealand rabbits were inf...

<ol>
	<li>Tetta, C., Ghigo, E., Silengo, L., Deregibus, M. C., Camussi, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Extracellular+vesicles+as+an+emerging+mechanism+of+cell-to-cell+communication.">Extracellular vesicles as an emerging mechanism of cell-to-cell communication.</a> Endocrine. 44 (1), 11-19 (2013).</li><li>Abels, E. R., Breakefield, X. O. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Introduction+to+Extracellular+Vesicles:+Biogenesis,+RNA+Cargo+Selection,+Content,+Release,+and+Uptake.">Introduction to Extracellular Vesicles: Biogenesis, RNA Cargo Selection, Content, Release, and Uptake.</a> Cell Mol Neurobiol. 36 (3), 301-312 (2016).</li><li>Riaz, F., Cheng, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Exosome-like+vesicles+of+helminths:+implication+of+pathogenesis+and+vaccine+development.">Exosome-like vesicles of helminths: implication of pathogenesis and vaccine development.</a> Ann Transl Med. 5 (7), 175 (2017).</li><li>Zhang, H. G., Grizzle, W. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Exosomes+and+cancer:+a+newly+described+pathway+of+immune+suppression.">Exosomes and cancer: a newly described pathway of immune suppression.</a> Clin Cancer Res. 17 (5), 959-964 (2011).</li><li>Colombo, M., Raposo, G., Thery, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Biogenesis,+secretion,+and+intercellular+interactions+of+exosomes+and+other+extracellular+vesicles.">Biogenesis, secretion, and intercellular interactions of exosomes and other extracellular vesicles.</a> Annu Rev Cell Dev Biol. 30, 255-289 (2014).</li><li>Li, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Circular+RNA+is+enriched+and+stable+in+exosomes:+a+promising+biomarker+for+cancer+diagnosis.">Circular RNA is enriched and stable in exosomes: a promising biomarker for cancer diagnosis.</a> Cell Res. 25 (8), 981-984 (2015).</li><li>Marcilla, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Extracellular+vesicles+in+parasitic+diseases.">Extracellular vesicles in parasitic diseases.</a> J Extracell Vesicles. 3, 25040 (2014).</li><li>Cwiklinski, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+Extracellular+Vesicles+of+the+Helminth+Pathogen,+Fasciola+hepatica:+Biogenesis+Pathways+and+Cargo+Molecules+Involved+in+Parasite+Pathogenesis.">The Extracellular Vesicles of the Helminth Pathogen, Fasciola hepatica: Biogenesis Pathways and Cargo Molecules Involved in Parasite Pathogenesis.</a> Mol Cell Proteomics. 14 (12), 3258-3273 (2015).</li><li>Buck, A. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Exosomes+secreted+by+nematode+parasites+transfer+small+RNAs+to+mammalian+cells+and+modulate+innate+immunity.">Exosomes secreted by nematode parasites transfer small RNAs to mammalian cells and modulate innate immunity.</a> Nat Commun. 5, 5488 (2014).</li><li>Sotillo, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Extracellular+vesicles+secreted+by+Schistosoma+mansoni+contain+protein+vaccine+candidates.">Extracellular vesicles secreted by Schistosoma mansoni contain protein vaccine candidates.</a> Int J Parasitol. 46 (1), 1-5 (2016).</li><li>Nowacki, F. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Protein+and+small+non-coding+RNA-enriched+extracellular+vesicles+are+released+by+the+pathogenic+blood+fluke+Schistosoma+mansoni.">Protein and small non-coding RNA-enriched extracellular vesicles are released by the pathogenic blood fluke Schistosoma mansoni.</a> J Extracell Vesicles. 4, 28665 (2015).</li><li>Wang, L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Exosome-like+vesicles+derived+by+Schistosoma+japonicum+adult+worms+mediates+M1+type+immune-+activity+of+macrophage.">Exosome-like vesicles derived by Schistosoma japonicum adult worms mediates M1 type immune- activity of macrophage.</a> Parasitol Res. 114 (5), 1865-1873 (2015).</li><li>Koh, Y. Q., Almughlliq, F. B., Vaswani, K., Peiris, H. N., Mitchell, M. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Exosome+enrichment+by+ultracentrifugation+and+size+exclusion+chromatography.">Exosome enrichment by ultracentrifugation and size exclusion chromatography.</a> Front Biosci (Landmark Ed). 23, 865-874 (2018).</li><li>Safdar, A., Saleem, A., Tarnopolsky, 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=The+potential+of+endurance+exercise-derived+exosomes+to+treat+metabolic+diseases.">The potential of endurance exercise-derived exosomes to treat metabolic diseases.</a> Nat Rev Endocrinol. 12 (9), 504-517 (2016).</li><li>Livshits, M. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Isolation+of+exosomes+by+differential+centrifugation:+Theoretical+analysis+of+a+commonly+used+protocol.">Isolation of exosomes by differential centrifugation: Theoretical analysis of a commonly used protocol.</a> Sci Rep. 5, 17319 (2015).</li><li>Zhu, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Release+of+extracellular+vesicles+containing+small+RNAs+from+the+eggs+of+Schistosoma+japonicum.">Release of extracellular vesicles containing small RNAs from the eggs of Schistosoma japonicum.</a> Parasit Vectors. 9 (1), 574 (2016).</li><li>Zhu, L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Molecular+characterization+of+S.+japonicum+exosome-like+vesicles+reveals+their+regulatory+roles+in+parasite-host+interactions.">Molecular characterization of S. japonicum exosome-like vesicles reveals their regulatory roles in parasite-host interactions.</a> Sci Rep. 6, 25885 (2016).</li><li>Lewis, F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Schistosomiasis.">Schistosomiasis.</a> Curr Protoc Immunol. , 11 (2001).</li><li>Cheng, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Circulating+miRNAs:+roles+in+cancer+diagnosis,+prognosis+and+therapy.">Circulating miRNAs: roles in cancer diagnosis, prognosis and therapy.</a> Adv Drug Deliv Rev. 81, 75-93 (2015).</li></ol>

Recent studies on EVs have demonstrated that schistosome EVs play an important role in host-pathogen interactions3,9,12,16. To further address their regulatory functions, it is essential to isolate EVs from schistosomes. Here, we describe an alternative method for SjEV isolation. This method yields a wide range size of SjEVs, from 100 nm to 400 nm, in adult S. japonicum. The following ...

Extracellular vesicles (EVs) are a population of small membrane-bound vesicles encapsulated with various proteins, lipids, and nucleic acids. Recent studies demonstrated that EVs play a crucial role in cell-cell communication, and are involved in the regulation of numerous physiological processes, including cell development, immune regulation, angiogenesis, and cell migration2,3,4,5. Accumulating evidence indicates that EVs, circulating exosomes, and their miRNA cargo represents potential biomarkers of certain diseases6.
Several protozoa such as Trichomonas vaginalis, Trypanosoma cruzi, and Leishmania spp., have been shown to be able to secrete EVs; helminths have additionally been found to secrete EVs into living hosts7. Parasitic EVs have been shown to be involved in the maintenance of infection, pathogenicity8, and immune regulation9. Recent studies in schistosomes both Schistosoma mansoni (S. mansoni) 10,11&#160;and S. japonicum12 have indicated that adult schistosomes secrete exosome-like vesicles that may be involved in the functional regulations of specific biological processes.
To date, several methods have been used to isolate extracellular vesicles, such as ultracentrifugation,ultrafiltration13, the use of polymer-based reagents, size-exclusion chromatography, and immunoaffinity isolation. These different methods possess their own advantages and limitations14. Generally, ultracentrifugation is considered the gold standard method for vesicle isolation. However, this method suffers from the limitation of potential EV aggregation14.
In schistosomes, a couple of methods have been reported for EV isolation: these include ultracentrifugation11,12,10 and the use of commercial EV isolation kit16 for several stages (eggs16, schistosomula11, adult schistosomes10,12,17). Given that microvesicles are of a wide range of size from several hundred nanometers to thousand nanometers, we developed an alternative method that combines with the use of bench centrifuge, ultrafiltration, and a commercial EV isolation kit to isolate the EVs from adult Schistosoma japonicum. The isolated EVs typically possessed a diameter of 100 - 400 nm and were successfully internalized by the recipient cells.

<table border="0" cellpadding="0" cellspacing="0" style="width:1161px;" width="1160">
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		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="31">
			<td height="31" style="height:31px;width:459px;">Material</td>
			<td style="width:196px;"></td>
			<td style="width:188px;"></td>
			<td style="width:319px;"></td>
		</tr>
		<tr height="33">
			<td height="33" style="height:33px;width:459px;">Total Exosome Isolation Reagent (from cell culture media)</td>
			<td style="width:196px;">ThermoFisher SCIENTIFIC</td>
			<td style="width:188px;">4478359</td>
			<td style="width:319px;">For isolating S. japonicum extracellular vesicles</td>
		</tr>
		<tr height="25">
			<td height="25" style="height:25px;width:459px;">PKH67</td>
			<td style="width:196px;">Sigma-aldrich</td>
			<td style="width:188px;">MINI67</td>
			<td style="width:319px;">For labeling Evs</td>
		</tr>
		<tr height="27">
			<td height="27" style="height:27px;">RPMI 1640 Medium</td>
			<td style="width:196px;">ThermoFisher SCIENTIFIC</td>
			<td>11875119</td>
			<td>For parasite culture</td>
		</tr>
		<tr height="31">
			<td height="31" style="height:31px;">Penicillin-Streptomycin</td>
			<td style="width:196px;">ThermoFisher SCIENTIFIC</td>
			<td>15140122</td>
			<td></td>
		</tr>
		<tr height="28">
			<td height="28" style="height:28px;">0.22&#956;m syringe filter</td>
			<td style="width:196px;">Merck</td>
			<td>SLGP033RB</td>
			<td></td>
		</tr>
		<tr height="31">
			<td height="31" style="height:31px;">SnakeSkin Dialysis Tubing</td>
			<td style="width:196px;">Thermo SCIENTIFIC</td>
			<td>68035</td>
			<td></td>
		</tr>
		<tr height="32">
			<td height="32" style="height:32px;">PEG8000</td>
			<td style="width:196px;">Sangon Biotech</td>
			<td>A100159&#160;</td>
			<td></td>
		</tr>
		<tr height="31">
			<td height="31" style="height:31px;">RIPA</td>
			<td style="width:196px;">Beyotime</td>
			<td>P0013B</td>
			<td></td>
		</tr>
		<tr height="30">
			<td height="30" style="height:30px;">EMD Millipore&#8482; Immobilon&#8482; Western Chemiluminescent HRP Substrate (ECL)</td>
			<td style="width:196px;">Fisher scientific</td>
			<td>WBKLS0100&#160;</td>
			<td></td>
		</tr>
		<tr height="29">
			<td height="29" style="height:29px;">DAPI</td>
			<td>Cell Signaling Technology</td>
			<td>4083</td>
			<td></td>
		</tr>
		<tr height="29">
			<td height="29" style="height:29px;">BCA kit</td>
			<td style="width:196px;">Beyotime</td>
			<td>P0010</td>
			<td></td>
		</tr>
		<tr height="34">
			<td height="34" style="height:34px;">CD63 antibodies</td>
			<td style="width:196px;">Sangon Biotech</td>
			<td>D160973-0025</td>
			<td></td>
		</tr>
		<tr height="28">
			<td height="28" style="height:28px;">PVDF</td>
			<td>Bio-Rad</td>
			<td>1704273</td>
			<td></td>
		</tr>
		<tr height="33">
			<td height="33" style="height:33px;">Formvar/Carbon 400 mesh</td>
			<td>Ted Pella</td>
			<td>01754-F</td>
			<td></td>
		</tr>
		<tr height="33">
			<td height="33" style="height:33px;">Phosphotungstic Acid</td>
			<td>Ted Pella</td>
			<td>19402</td>
			<td></td>
		</tr>
		<tr height="36">
			<td height="36" style="height:36px;">anti-mouse IgG-HRP</td>
			<td>CWBIO</td>
			<td>CW0102</td>
			<td></td>
		</tr>
		<tr height="37">
			<td height="37" style="height:37px;width:459px;">NCTC clone 1469 cells</td>
			<td style="width:196px;">ATCC</td>
			<td style="width:188px;">ATCC&#174; CCL-9.1&#8482;</td>
			<td style="width:319px;"></td>
		</tr>
		<tr height="37">
			<td height="37" style="height:37px;width:459px;">FBS</td>
			<td style="width:196px;">HyClone</td>
			<td style="width:188px;">SV30087.02</td>
			<td style="width:319px;"></td>
		</tr>
		<tr height="30">
			<td height="30" style="height:30px;width:459px;">Equipments</td>
			<td style="width:196px;"></td>
			<td style="width:188px;"></td>
			<td style="width:319px;"></td>
		</tr>
		<tr height="34">
			<td height="34" style="height:34px;">GE chemoluminescance imaging system</td>
			<td>GE</td>
			<td>ImageQuant LAS4000mini</td>
			<td></td>
		</tr>
		<tr height="29">
			<td height="29" style="height:29px;">Transmission electron microscopy</td>
			<td>Hitachi</td>
			<td>H-7600</td>
			<td></td>
		</tr>
		<tr height="31">
			<td height="31" style="height:31px;">Milli-Q water</td>
			<td>Milli-Q</td>
			<td>Milli-Q Elix</td>
			<td></td>
		</tr>
		<tr height="31">
			<td height="31" style="height:31px;">Eppendor Centrifuge&#160;</td>
			<td>Eppendorf</td>
			<td>Centrifuge 5804R</td>
			<td></td>
		</tr>
		<tr height="29">
			<td height="29" style="height:29px;">Zetasizer Nano</td>
			<td>Malvern</td>
			<td>Zetasizer Nano ZS&#160;</td>
			<td></td>
		</tr>
		<tr height="30">
			<td height="30" style="height:30px;">Ultracentrifuge</td>
			<td style="width:196px;">Beckman</td>
			<td colspan="2">Optima L-100 XP Ultracentrifuge</td>
		</tr>
		<tr height="33">
			<td height="33" style="height:33px;">Incubator</td>
			<td style="width:196px;">ESCO</td>
			<td>CCL-107B</td>
			<td></td>
		</tr>
		<tr height="27">
			<td height="27" style="height:27px;">Microscope</td>
			<td style="width:196px;">Zeiss</td>
			<td>Zeiss Axin Observer Z1</td>
			<td></td>
		</tr>
	</tbody>
</table>

isolation and characterization of extracellular vesicles from adult schistosoma japonicum

Extracellular vesicles (EVs) are membranous vesicles released by a variety of cells into the extracellular microenvironment. EVs represent a population of heterogeneous vesicles, whose size range between 40 and 1,000 nm. Accumulated evidence indicated that EVs play important regulatory roles in pathogen-host interactions. A deep understanding of schistosome EVs should provide insights into the mechanisms underlying schistosome-host interactions, enabling development of novel strategies against schistosomiasis. Here, we aim to further study EVs functions in schistosomes by presenting a protocol for the isolation and characterization of EVs from adult Schistosoma japonicum (S. japonicum). EVs were isolated from in vitro culture medium using centrifugation combined with a commercial exosome isolation kit. The isolated S. japonicum EVs (SjEVs) typically possess a diameter of 100 - 400 nm, and are characterized by transmission electronic microscopy and western blotting. The usage of PKH67 dye-labeled SjEVs has demonstrated that SjEVs are internalized by the recipient cells. Overall, our protocol provides an alternative method for isolating EVs from adult schistosomes; the isolated SjEVs may be suitable for functional analysis.

To quantify the yield of isolated SjEVs using the described protocol, we used BCA protein assay to access the protein concentration of the isolated SjEVs from 28-day adult schistosomes. As shown in Table 1, the SjEV protein concentration ranged from 208 &#181;g to 250 &#181;g per 100 mL of medium (Table 1).The particle size, as determined by Malvern nanoparticle analysis, indicated that the isolated SjEVs ranged from 100 nm to 400 nm, with the highest pop...

Watch this Scientific Journal Video about Isolation and Characterization of Extracellular Vesicles from Adult Schistosoma japonicum at JoVE.com

Isolation and Characterization of Extracellular Vesicles from Adult Schistosoma japonicum

Here, we present a protocol to describe extracellular vesicles (EVs) isolation in in vitro cultured medium from adult Schistosoma japonicum.

Isolation and Characterization of Extracellular Vesicles from Adult Schistosoma japonicum

Extracellular vesicles (EVs) are membranous vesicles released by a variety of cells into the extracellular microenvironment. EVs represent a population of ...

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