Name: preparation of mouse pituitary immunogen for the induction of experimental autoimmune hypophysitis
Uploaded: 2010-12-17T16:00:00
Description: Watch this Scientific Journal Video about Preparation of Mouse Pituitary Immunogen for the Induction of Experimental Autoimmune Hypophysitis at JoVE.com

This work was supported by NIH grant DK080351 to PC.

Experimental Protocol
The first step in this experimental protocol is to collect a large number of mouse pituitary glands. The second step is to homogenize the glands to prepare a protein extract. The third step is to emulsify these proteins with an oily mixture.
Step 1: Collection and storage of mouse pituitary glands
The mouse pituitary gland sits at the base of the skull in a depression of the sphenoid bone called the sella turcica, s...

<ol>
	<li>Caturegli, P., Newschaffer, C., Olivi, A., Pomper, M. G., Burger, P. C., Rose, N. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Autoimmune Hypophysitis Endocr Rev. 26, 599-614 (2005).</li><li>Blansfield, J. A., Beck, K. E., Tran, K., Yang, J. C., Hughes, M. S., Kammula, U. S., Royal, R. E., Topalian, S. L., Haworth, L. R., Levy, C., Rosenberg, S. A., Sherry, R. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cytotoxic+T-lymphocyte-associated+antigen-4+blockage+can+induce+autoimmune+hypophysitis+in+patients+with+metastatic+melanoma+and+renal+cancer.">Cytotoxic T-lymphocyte-associated antigen-4 blockage can induce autoimmune hypophysitis in patients with metastatic melanoma and renal cancer.</a> J Immunother. 28, 593-598 (2005).</li><li>Tzou, S. C., Lupi, I., Landek, M., Gutenberg, A., Tzou, Y. M., Kimura, H., Pinna, G., Rose, N. R., Caturegli, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Autoimmune+Hypophysitis+of+SJL+mice:+Clinical+Insights+from+a+New+Animal+Model.">Autoimmune Hypophysitis of SJL mice: Clinical Insights from a New Animal Model.</a> Endocrinology. 149, 3461-3469 (2008).</li><li>Goudie, R. B., Pinkerton, P. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Anterior+hypophysitis+and+Hashimoto's+disease+in+a+woman.">Anterior hypophysitis and Hashimoto's disease in a woman.</a> J Pathol Bacteriol. 83, 584-585 (1962).</li><li>Caturegli, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Autoimmune+hypophysitis:+an+underestimated+disease+in+search+of+its+autoantigen(s).">Autoimmune hypophysitis: an underestimated disease in search of its autoantigen(s).</a> J Clin Endocrinol Metab. 92, 2038-2040 (2007).</li></ol>

Despite the fact that the first patient with autoimmune hypophysitis was reported in 19624, the pathogenic pituitary autoantigens remain to be identified5. Animal models can be very useful to identify these autoantigens, aiding the discovery of biomarkers that are translatable to patient care. This article has demonstrated a straightforward procedure for preparing pituitary proteins in a form that is adequate for inducing autoimmune hypophysitis in experimental animals.

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<td>15-ml Falcon tubes</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>homogenization buffer</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
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<td>phosphate buffered saline</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
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<td>protease inhibitor cocktail</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Polytron homogenizer</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>BCA assay</td>
<td>&nbsp;</td>
<td>Pierce</td>
<td>23225</td>
<td>&nbsp;</td>
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<td>Complete Freund's Adjuvant (CFA)</td>
<td>&nbsp;</td>
<td>Sigma</td>
<td>F-5881</td>
<td>&nbsp;</td>
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<td>Mycobacterium tuberculosis</td>
<td>&nbsp;</td>
<td>Becton Dickinson</td>
<td>231141</td>
<td>&nbsp;</td>
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<td>2.5 mL Hamilton gastight syringe</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
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<td>22-gauge micro-emulsifying needle</td>
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preparation of mouse pituitary immunogen for the induction of experimental autoimmune hypophysitis

Autoimmune hypophysitis is a chronic inflammation of the pituitary gland caused or accompanied by autoimmunity1. It has traditionally been considered a rare disease but reporting has increased markedly in recent years. Hypophysitis, in fact, develops not uncommonly as a "side effect" in cancer patients treated with antibodies that block inhibitory receptors expressed on T lymphocytes, such as CTLA-42 and PD-1 receptors. Autoimmune hypophysitis can be induced experimentally by injecting mice with pituitary proteins mixed with an adjuvant3. In this video article we demonstrate how to extract proteins from mouse pituitary glands and how to prepare them in a form suitable for inducing autoimmune hypophysitis in SJL mice.

Watch this Scientific Journal Video about Preparation of Mouse Pituitary Immunogen for the Induction of Experimental Autoimmune Hypophysitis at JoVE.com

Preparation of Mouse Pituitary Immunogen for the Induction of Experimental Autoimmune Hypophysitis

Autoimmune hypophysitis can be reproduced in mice by injecting an extract of mouse pituitary proteins.

Autoimmune hypophysitis is a chronic inflammation of the pituitary gland caused or accompanied by autoimmunity1.  It has traditionally been considered a ...

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