This project was supported by the Swiss National Science Foundation (SNF # 310030-127586/1).

1. Intervertebral Disc Harvesting
<ol>
	<li>Whole length bovine tail is obtained from a local abattoir, if possible without skin since the presence of skin increases the chance of contamination (Fig 2).</li>
	<li>Prepare large cutting board and prepare sterile work station and instruments on top of a cutting board (Fig. 2).</li>
	<li>Prepare under the sterile laminar flow hood sterile gauze moistened with 0.9% sodium chloride containing 55mM sodium citrate and put into each well of the 6-well plate.</li>
	<li>Prepare a...

<ol>
	<li>Lee, C. R., Iatridis, J. C., Poveda, L., Alini, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=In+vitro+organ+culture+of+the+bovine+intervertebral+disc:+effects+of+vertebral+endplate+and+potential+for+mechanobiology+studies.">In vitro organ culture of the bovine intervertebral disc: effects of vertebral endplate and potential for mechanobiology studies.</a> Spine (Phila Pa 1976). 31, 515-522 (1976).</li><li>Chan, S. C. W., Gantenbein-Ritter, B., Leung, V. Y., Chan, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cryopreserved+intervertebral+disc+with+injected+bone+marrow-derived+stromal+cells:+a+feasibility+study+using+organ+culture.">Cryopreserved intervertebral disc with injected bone marrow-derived stromal cells: a feasibility study using organ culture.</a> Spine. J. 10 (6), 486-496 (2010).</li><li>Chan, S. C., Ferguson, S. J., Wuertz, K., Gantenbein-Ritter, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Biological+Response+of+the+Intervertebral+Disc+to+Repetitive+Short+Term+Cyclic+Torsion.">Biological Response of the Intervertebral Disc to Repetitive Short Term Cyclic Torsion.</a> Spine (Phila Pa 1976). , (2011).</li><li>Gantenbein-Ritter, B., Sprecher, C. M., Chan, S., Illien-J&#252;nger, S., Grad, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Confocal+imaging+protocols+for+live/dead+staining+in+three-dimensional+carriers.">Confocal imaging protocols for live/dead staining in three-dimensional carriers.</a> Methods Mol. Biol. 740, 127-140 (2011).</li><li>Gantenbein-Ritter, B., Potier, E., Zeiter, S., van der Werf, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Accuracy+of+three+techniques+to+determine+cell+viability+in+3D+tissues+or+scaffolds.">Accuracy of three techniques to determine cell viability in 3D tissues or scaffolds.</a> Tissue Engineering Part C Methods. 14, 353-358 (2008).</li><li>Rasband, W. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> ImageJ. , (1997).</li><li>Haschtmann, D., Stoyanov, J. V., Ettinger, L., Nolte, L. P., Ferguson, S. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Establishment+of+a+novel+intervertebral+disc/endplate+culture+model:+analysis+of+an+ex+vivo+in+vitro+whole-organ+rabbit+culture+system.">Establishment of a novel intervertebral disc/endplate culture model: analysis of an ex vivo in vitro whole-organ rabbit culture system.</a> Spine. 31, 2918-2925 (2006).</li><li>Gantenbein, B., Gr&#252;nhagen, T., Lee, C. R., van Donkelaar, C. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=An+in+vitro+organ+culturing+system+for+intervertebral+disc+explants+with+vertebral+endplates:+a+feasibility+study+with+ovine+caudal+discs.">An in vitro organ culturing system for intervertebral disc explants with vertebral endplates: a feasibility study with ovine caudal discs.</a> Spine. 31, 2665-2673 (2006).</li><li>Korecki, C. L., Kuo, C. K., Tuan, R. S., Iatridis, J. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intervertebral+disc+cell+response+to+dynamic+compression+is+age+and+frequency+dependent.">Intervertebral disc cell response to dynamic compression is age and frequency dependent.</a> J. Orthop. Res. 27, 800-806 (2009).</li><li>Korecki, C. L., MacLean, J. J., Iatridis, J. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dynamic+compression+effects+on+intervertebral+disc+mechanics+and+biology.">Dynamic compression effects on intervertebral disc mechanics and biology.</a> Spine (Phila Pa 1976). 33, 1403-1409 (1976).</li><li>Jim, B., Steffen, T., Moir, J., Roughley, P., Haglund, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Development+of+an+intact+intervertebral+disc+organ+culture+system+in+which+degeneration+can+be+induced+as+a+prelude+to+studying+repair+potential.">Development of an intact intervertebral disc organ culture system in which degeneration can be induced as a prelude to studying repair potential.</a> European Spine Journal. , 1-11 (2011).</li></ol>

We have nothing to disclose.

The first step for successful organ culture is to make sure that the explant should not be contaminated. The tail should be skinned before you start with the procedure. Any animal hair brought into a sterile lab could be problematic in terms of contamination. The bovine tail should ideally be as fresh as possible (this affects initial cell viability). Furthermore, the betadine washing step is recommended to reduce the risk of contamination further. Instead of using a custom-made blade holder and a hammer to separate the ...

<table border="1">
<tbody>
 <tr>
 <td>Name of the reagent</td>
 <td>Company</td>
 <td>Catalogue number</td>
 <td>Comments (optional)</td>
 </tr>
 <tr>
 <td colspan="4">Fresh bovine intervertebral disc tissue from bovine tails, from local slaughter house (ideally within hours post-mortem and without skin). </td>
 </tr>
 <tr>
 <td>Pulsavac Plus AC System</td>
 <td>Zimmer inc., Switzerland</td>
 <td>00-5150-486-01 </td>
 <td>Best performance with the hip-spray head and with AC power supply (the one with the 8 AA battery pack does also work but is less convenient)</td>
 </tr>
 <tr>
 <td>High Capacity Fan Spray w/Splash Shield, 12.7cm length </td>
 <td>Zimmer inc., Switzerland</td>
 <td>00-5150-175-00 </td>
 <td>There are several spray heads available, we tested this one successfully</td>
 </tr>
 <tr>
 <td>Scalpel blades #22 and #10</td>
 <td>Swann-Morton, England</td>
 <td>#10: 0201 
 #22: 0208</td>
 <td>&nbsp;</td>
 </tr>
 <tr>
 <td>Scalpel blade holder # 3 and #4</td>
 <td>Hausmann, Germany</td>
 <td>#3: 06.103.00 
 #4: 06.104.00</td>
 <td>&nbsp;</td>
 </tr>
 <tr>
 <td>Lutz industrial blade</td>
 <td>Lutz, Germany</td>
 <td>1022.0884</td>
 <td>&nbsp;</td>
 </tr>
 <tr>
 <td>Phosphate buffered Saline (PBS)</td>
 <td>Invitrogen, Switzerland</td>
 <td>10010-023</td>
 <td>&nbsp;</td>
 </tr>
 <tr>
 <td>Dulbecco's Modified Eagle Medium (DMEM)</td>
 <td>Gibco, Switzerland</td>
 <td>11960-044</td>
 <td>&nbsp;</td>
 </tr>
 <tr>
 <td>Lactated Ringer's solution (without glucose)</td>
 <td>Bichsel, Switzerland</td>
 <td>133 0002</td>
 <td>&nbsp;</td>
 </tr>
 <tr>
 <td>6-well multi-well plate</td>
 <td>TPP, Switzerland</td>
 <td>92006</td>
 <td>&nbsp;</td>
 </tr>
 <tr>
 <td>Betadine solution</td>
 <td>Mundipharma, Switzerland</td>
 <td>10055025</td>
 <td>&nbsp;</td>
 </tr>
 <tr>
 <td>Surgical skin marker</td>
 <td>Porex Surgical, Switzerland</td>
 <td>9560</td>
 <td>&nbsp;</td>
 </tr>
 <tr>
 <td>Large cutting board</td>
 <td>&nbsp;</td>
 <td>&nbsp;</td>
 <td>Any brand is possible</td>
 </tr>
 </tbody>
</table>

preparation of intact bovine tail intervertebral discs for organ culture

The intervertebral disc (IVD) is the joint of the spine connecting vertebra to vertebra. It functions to transmit loading of the spine and give flexibility to the spine. It composes of three compartments: the innermost nucleus pulposus (NP) encompassing by the annulus fibrosus (AF), and two cartilaginous endplates connecting the NP and AF to the vertebral body on both sides. Discogenic pain possibly caused by degenerative intervertebral disc disease (DDD) and disc herniations has been identified as a major problem in our modern society. To study possible mechanisms of IVD degeneration, in vitro organ culture systems with live disc cells are highly appealing. The in vitro culture of intact bovine coccygeal IVDs has advanced to a relevant model system, which allows the study of mechano-biological aspects in a well-controlled physiological and mechanical environment. Bovine tail IVDs can be obtained relatively easy in higher numbers and are very similar to the human lumbar IVDs with respect to cell density, cell population and dimensions. However, previous bovine caudal IVD harvesting techniques retaining cartilaginous endplates and bony endplates failed after 1-2 days of culture since the nutrition pathways were obviously blocked by clotted blood. IVDs are the biggest avascular organs, thus, the nutrients to the cells in the NP are solely dependent on diffusion via the capillary buds from the adjacent vertebral body. Presence of bone debris and clotted blood on the endplate surfaces can hinder nutrient diffusion into the center of the disc and compromise cell viability. Our group established a relatively quick protocol to "crack"-out the IVDs from the tail with a low risk for contamination. We are able to permeabilize the freshly-cut bony endplate surfaces by using a surgical jet lavage system, which removes the blood clots and cutting debris and very efficiently reopens the nutrition diffusion pathway to the center of the IVD. The presence of growth plates on both sides of the vertebral bone has to be avoided and to be removed prior to culture. In this video, we outline the crucial steps during preparation and demonstrate the key to a successful organ culture maintaining high cell viability for 14 days under free swelling culture. The culture time could be extended when appropriate mechanical environment can be maintained by using mechanical loading bioreactor. The technique demonstrated here can be extended to other animal species such as porcine, ovine and leporine caudal and lumbar IVD isolation.

Watch this Scientific Journal Video about Preparation of Intact Bovine Tail Intervertebral Discs for Organ Culture at JoVE.com

Preparation of Intact Bovine Tail Intervertebral Discs for Organ Culture

This protocol illustrates a harvesting technique for coccygeal bovine intervertebral discs for organ culture for in vitro organ culture.

The intervertebral disc (IVD) is the joint of the spine connecting  vertebra to vertebra. It functions to transmit loading of the spine and give  ...

preparation-intact-bovine-tail-intervertebral-discs-for-organ

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14.4K Views.  University of Bern. This protocol illustrates a harvesting technique for coccygeal bovine intervertebral discs for organ culture for in vitro organ culture.