Name: evaluation of intracellular location of reactive oxygen species in solea senegalensis spermatozoa
Uploaded: 2018-03-11T13:00:00
Description: Watch this Scientific Journal Video about Evaluation of Intracellular Location of Reactive Oxygen Species in Solea Senegalensis Spermatozoa at JoVE.com

We thank AQUAGAMETE FA 1205 COST Action. This work was financially supported by AGL201568330-C2-1-R project (MINECO/FEDER). David G. Valcarce was funded by Junta de Castilla y Le&#243;n (EDU1084/2012) and Fondo Social Europeo. Authors acknowledge Dr. Ana Riaza and Stolt Sea Farm S.A.,&#160;Dr. Paulino de Paz, Dr. Ignacio Mart&#237;nez Montero and&#160;Jos&#233; Ram&#243;n Gui&#233;rrez. We also thank&#160;Paula Fern&#225;ndez Colado for videography.

NOTE: Fluorochrome incubation and confocal analysis will take at least 2-3 h for a control and a treated sample. Data processing is not included in this time calculation. Required materials can be found in the Table of Materials. This protocol can be applied to fresh or cryopreserved spermatozoa. Solea senegalensis is a fish species that spawns in cold water, work always under cold conditions (4-7 &#176;C). See Figure 1 for a general view of the protocol.
<p cla...

<ol>
	<li>Amaral, 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=Mitochondrial+functionality+and+chemical+compound+action+on+sperm+function.">Mitochondrial functionality and chemical compound action on sperm function.</a> Curr Med Chem. , (2016).</li><li>Morielli, T., O'Flaherty, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Oxidative+stress+impairs+function+and+increases+redox+protein+modifications+in+human+spermatozoa.">Oxidative stress impairs function and increases redox protein modifications in human spermatozoa.</a> Reproduction. 149 (1), 113-123 (2015).</li><li>G&#252;rler, 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=Effects+of+cryopreservation+on+sperm+viability,+synthesis+of+reactive+oxygen+species,+and+DNA+damage+of+bovine+sperm.">Effects of cryopreservation on sperm viability, synthesis of reactive oxygen species, and DNA damage of bovine sperm.</a> Theriogenology. , (2016).</li><li>Zhu, Z., 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=Vitamin+E+Analogue+Improves+Rabbit+Sperm+Quality+during+the+Process+of+Cryopreservation+through+Its+Antioxidative+Action.">Vitamin E Analogue Improves Rabbit Sperm Quality during the Process of Cryopreservation through Its Antioxidative Action.</a> PLoS One. 10 (12), e0145383 (2015).</li><li>Fang, 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=Inhibition+of+ROS+production+through+mitochondria-targeted+antioxidant+and+mitochondrial+uncoupling+increases+post-thaw+sperm+viability+in+yellow+catfish.">Inhibition of ROS production through mitochondria-targeted antioxidant and mitochondrial uncoupling increases post-thaw sperm viability in yellow catfish.</a> Cryobiology. 69 (3), (2014).</li><li>Thomson, L. K., Fleming, S. D., Aitken, R. J., De Iuliis, G. N., Zieschang, J. A., Clark, A. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cryopreservation-induced+human+sperm+DNA+damage+is+predominantly+mediated+by+oxidative+stress+rather+than+apoptosis.">Cryopreservation-induced human sperm DNA damage is predominantly mediated by oxidative stress rather than apoptosis.</a> Hum Reprod. 24 (9), 2061-2070 (2009).</li><li>Kim, S. H., Yu, D. H., Kim, Y. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effects+of+cryopreservation+on+phosphatidylserine+translocation,+intracellular+hydrogen+peroxide,+and+DNA+integrity+in+canine+sperm.">Effects of cryopreservation on phosphatidylserine translocation, intracellular hydrogen peroxide, and DNA integrity in canine sperm.</a> Theriogenology. 73 (3), (2010).</li><li>Guthrie, H. D., Welch, G. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effects+of+reactive+oxygen+species+on+sperm+function.">Effects of reactive oxygen species on sperm function.</a> Theriogenology. 78 (8), 1700-1708 (2012).</li><li>Aitken, R. J., Jones, K. T., Robertson, S. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Reactive+oxygen+species+and+sperm+function--in+sickness+and+in+health.">Reactive oxygen species and sperm function--in sickness and in health.</a> J Androl. 33 (6), (2012).</li><li>Valcarce, D. G., Robles, V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effect+of+captivity+and+cryopreservation+on+ROS+production+in+Solea+senegalensis+spermatozoa.">Effect of captivity and cryopreservation on ROS production in Solea senegalensis spermatozoa.</a> Reproduction. 152 (5), (2016).</li><li>Gibb, Z., Lambourne, S. R., Aitken, R. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+paradoxical+relationship+between+stallion+fertility+and+oxidative+stress.">The paradoxical relationship between stallion fertility and oxidative stress.</a> Biol Reprod. 91 (3), (2014).</li><li>Cabrita, E., 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=Factors+enhancing+fish+sperm+quality+and+emerging+tools+for+sperm+analysis.">Factors enhancing fish sperm quality and emerging tools for sperm analysis.</a> Aquaculture. 432, 389-401 (2014).</li></ol>

It is well known that mitochondria are key organelles for sperm motility and function. These organelles are concurrently directly involved in ROS production. Interestingly, controlled levels of ROS are needed for proper sperm function1. Positive relationships between fertility and oxidative stress have been shown in mammals11 but excessive levels affect sperm quality12. One crucial factor that could be decisive towards a positive or negative effect i...

The reactive oxygen species production has been linked with sperm quality recently1. Although ROS production in mitochondria can be considered a normal physiological process, oxidative stress by an excess of ROS production is a clear cause of damage in spermatozoa at different levels. In humans, oxidative stress is associated with male infertility, altering motility and the ability to undergo capacitation2; in mammals, change of DNA integrity in frozen sperm samples has been also related to synthesis of H2O23.
Cryopreservation is a common technique for gene banking in aquaculture. This technology is particularly important in species with reproductive problems such as Solea senegalensis. This valuable species in the market shows reproductive dysfunction in individuals born in captivity due to a lack of courtship. This fact makes sperm cryopreservation necessary to have sperm availability for artificial fertilization. However, cryopreservation could be a source of oxidative stress that could be detrimental for spermatozoa4 as studies have reported a beneficial effect of antioxidant supplementation. ROS inhibition through mitochondrial-targeted antioxidant was reportedly beneficial for sperm cryopreservation in yellow catfish5.
Therefore, the levels of ROS in sperm samples are important to know, particularly after cryopreservation6,7 because these molecules have been recognized as a drawback for sperm survival and fertility8. Moreover, studying the distribution of ROS within the cell could be crucial to infer the level of potential damage. As an example, low levels of ROS in the mitochondria could be assumed normal and compatible with sperm function, but high levels of ROS within the nucleus could be indicators of spermatozoa DNA damage. H2O2 is one of the most relevant ROS that could be released from the mitochondria and penetrate the nucleus because it is a small and charge-less molecule9. Dichlorofluorescein diacetate (DCFH-DA) can specifically reveal intracellular peroxide emitting green fluorescence. In this article, a detailed protocol for detecting H2O2 intracellular localization in Solea senegalensis sperm using confocal microscopy is presented.

<table border="0" cellpadding="0" cellspacing="0" width="790">
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:351px;">2&#8242;,7&#8242;-Dichlorodihydrofluorescein diacetate (DCFH-DA)&#160;</td>
			<td style="width:155px;">Sigma-Aldrich</td>
			<td style="width:119px;">D6883</td>
			<td style="width:167px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">4&#8242;,6-diamidino-2-phenylindole (DAPI)&#160;</td>
			<td>Sigma-Aldrich</td>
			<td>D9542</td>
			<td></td>
		</tr>
		<tr height="25">
			<td height="25" style="height:25px;">CaCl2</td>
			<td>Sigma-Aldrich</td>
			<td>C1016&#160;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Confocal Microscopy</td>
			<td>Zeiss</td>
			<td>LSM800</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Cover slips</td>
			<td>Thermo Fisher Scientific</td>
			<td>12-541B</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">DMSO, Analytical Grade</td>
			<td>Sigma-Aldrich</td>
			<td>W387520</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">HEPES</td>
			<td>Sigma-Aldrich</td>
			<td>H3375</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">KCl</td>
			<td>Sigma-Aldrich</td>
			<td>P9541</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Methanol, Analytical Grade</td>
			<td>Sigma-Aldrich</td>
			<td>34860</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">MitoTrackerDeep Red&#160;</td>
			<td>Thermo Fisher Scientific</td>
			<td>M22426</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Microcentrifuge (refrigerated)</td>
			<td>Thermo Fisher Scientific</td>
			<td>75002441</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">NaCl</td>
			<td>Sigma-Aldrich</td>
			<td>S7653&#160;</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Neubauerchamber</td>
			<td>Sigma-Aldrich</td>
			<td>BR717810</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Slides</td>
			<td>Thermo Fisher Scientific</td>
			<td>10143562BEF</td>
			<td></td>
		</tr>
	</tbody>
</table>

evaluation of intracellular location of reactive oxygen species in solea senegalensis spermatozoa

Oxidative stress is one of the important factors in decreasing sperm quality. Developing efficient protocols for detecting reactive oxygen species (ROS) in spermatozoa is of high importance in any species, but these methods are rarely used and even less in teleost. Cryopreservation is a useful technique in aquaculture for different purposes, including gene banking and guaranteed sperm availability throughout the year. Freezing/thawing procedures could cause ROS production and damage the sperm cells. Considering the prospective damage that an excess of ROS production could cause in spermatozoa depending on their localization, here a detailed methodology to detect H2O2 and to evaluate its intracellular localization by confocal microscopy is provided. For this purpose, a combination of 3 fluorochromes (2&#8242;,7&#8242;-Dichlorodihydrofluorescein diacetate (DCFH-DA), a live mitochondria stain and 4&#8242;,6-Diamidino-2-phenylindole dihydrochloride (DAPI)) are used to evaluate the co-localization of H2O2 with spermatozoa nuclei or mitochondria in Solea senegalesis sperm samples.

Confocal microscopy is an ideal method for intracellular ROS evaluation in teleost sperm. The combination of the three fluorochromes (DAPI, a mitochondria stain and DCFH-DA) presented in this study (Figure 1) provides many useful information that can be applied in basic research and can have applications in improving procedures used in industrial aquaculture plants, such as cryopreservation protocols. Different types of analysis may be carried out in order to...

Watch this Scientific Journal Video about Evaluation of Intracellular Location of Reactive Oxygen Species in Solea Senegalensis Spermatozoa at JoVE.com

Evaluation of Intracellular Location of Reactive Oxygen Species in Solea Senegalensis Spermatozoa

This protocol describes a detailed methodology for detecting H2O2 localization within Solea senegalensis spermatozoa using a sensitive fluorochrome DCFH-DA for ROS, a live mitochondria stain for mitochondria, and DAPI for nuclei visualization, respectively. The protocol is designed to be performed within 2 h with either fresh or thawed spermatozoa.

Evaluation of Intracellular Location of Reactive Oxygen Species in Solea Senegalensis Spermatozoa

Oxidative stress is one of the important factors in decreasing sperm quality. Developing efficient protocols for detecting reactive oxygen species (ROS) ...

Research

JoVE Journal

Developmental Biology

Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells

One of the major goals for regenerative medicine is the generation and maintenance of hematopoietic stem cells (HSCs) derived from human pluripotent stem ...

Bottlenose Dolphin (Tursiops truncatus) Spermatozoa: Collection, Cryopreservation, and Heterologous In Vitro Fertilization

Bottlenose Dolphin Tursiops truncatus Spermatozoa: Collection, Cryopreservation, and Heterologous In Vitro Fertilization

The use of cryopreserved dolphin spermatozoa facilitates the exchange of genetic material between aquatic parks and makes spermatozoa accessible to ...

Dissection and Immunofluorescent Staining of Mushroom Body and Photoreceptor Neurons in Adult Drosophila melanogaster Brains

Dissection and Immunofluorescent Staining of Mushroom Body and Photoreceptor Neurons in Adult Drosophila melanogaster Brains

Nervous system development involves a sequential series of events that are coordinated by several signaling pathways and regulatory networks. Many of the ...

Evaluation of Injury-induced Senescence and In Vivo Reprogramming in the Skeletal Muscle

Evaluation of Injury-induced Senescence and In Vivo Reprogramming in the Skeletal Muscle

Cellular senescence is a stress response that is characterized by a stable cellular growth arrest, which is important for many physiological and ...

Methods for Imaging Intracellular pH of the Follicle Stem Cell Lineage in Live Drosophila Ovarian Tissue

Methods for Imaging Intracellular pH of the Follicle Stem Cell Lineage in Live Drosophila Ovarian Tissue

Changes in intracellular pH (pHi) play important roles in the regulation of many cellular functions, including metabolism, proliferation, and ...

Immobilization of Caenorhabditis elegans to Analyze Intracellular Transport in Neurons

Immobilization of Caenorhabditis elegans to Analyze Intracellular Transport in Neurons

Axonal transport and intraflagellar transport (IFT) are essential for axon and cilia morphogenesis and function. Kinesin superfamily proteins and dynein ...

Live Cell Imaging of Chromosome Segregation During Mitosis

Chromosomes must be reliably and uniformly segregated into daughter cells during mitotic cell division. Fidelity of chromosomal segregation is controlled ...

A Quantitative Measurement of Reactive Oxygen Species and Senescence-associated Secretory Phenotype in Normal Human Fibroblasts During Oncogene-induced Senescence

Cellular senescence has been considered a state of irreversible growth arrest upon exhaustion of proliferative capacity or exposure to various stresses. ...

Confocal Live Imaging of Shoot Apical Meristems from Different Plant Species

The shoot apical meristem (SAM) functions as a conserved stem cell reservoir and it generates almost all aboveground tissues during the postembryonic ...

Evaluation of Fertilization State by Tracing Sperm Nuclear Morphology in Arabidopsis Double Fertilization

Evaluation of Fertilization State by Tracing Sperm Nuclear Morphology in Arabidopsis Double Fertilization

Flowering plants have a unique sexual reproduction system called &#8216;double fertilization&#39;,&#160;in which each of the sperm cells precisely fuses ...