Maus Pneumonektomie Modell der Ausgleichs Lung Wachstum
Summary
Mouse pneumonectomy is a commonly employed model of compensatory lung growth. This procedure can be used in conjunction with lineage tracing or transgenic mouse models to elucidate underlying mechanisms.
Abstract
In humans, disrupted repair and remodeling of injured lung contributes to a host of acute and chronic lung disorders which may ultimately lead to disability or death. Injury-based animal models of lung repair and regeneration are limited by injury-specific responses making it difficult to differentiate changes related to the injury response and injury resolution from changes related to lung repair and lung regeneration. However, use of animal models to identify these repair and regeneration signaling pathways is critical to the development of new therapies aimed at improving pulmonary function following lung injury. The mouse pneumonectomy model utilizes compensatory lung growth to isolate those repair and regeneration signals in order to more clearly define mechanisms of alveolar re-septation. Here, we describe our technique for performing mouse pneumonectomy and sham pneumonectomy. This technique may be utilized in conjunction with lineage tracing or other transgenic mouse models to define molecular and cellular mechanism of lung repair and regeneration.
Introduction
Die Hauptfunktion der Lunge ist für Sauerstoff und Kohlendioxid Austausch zwischen einem Organismus und der Atmosphäre bereitzustellen. Beim Menschen eine Vielzahl von angeborenen und erworbenen Bedingungen führen zu verminderter Lungenfläche, die zu einer Beeinträchtigung der Lungenfunktion führt. Dh Lungen – Obwohl eine Vielzahl von Therapien wie inhalativen Kortikosteroiden, Bronchodilatatoren, zusätzlichen Sauerstoff und chronische mechanische Belüftung verwendet werden, um die Folgen der Beeinträchtigung der Lungenfunktion 1-3 abzuschwächen, wäre die ideale Therapie für diesen Bedingungen Nachwachsen der funktionellen Lungengewebe zu fördern Regeneration.
Säugetiergeweberegeneration ist gut dokumentiert worden. Die Afrikanische Stachelmaus können große Bereiche der Haut ohne Narbenbildung 4 zu regenerieren. Die Phalanx beim Menschen nach einer Verletzung oder Amputation 5-7 regenerieren. Nach Pneumonektomie (PNX) tritt Ausgleichslungenwachstum bei Mäusen, 8, 9 Ratten, zu tungs 10 und 11 Menschen. Per Definition beinhaltet Ausgleichslungenwachstum nicht nur Ausbau der bestehenden Lufträume, aber erneut Septierung dieser vergrößerten Lufträume mit der Expansion des zugehörigen Mikrozirkulation 12. Genexpressionsanalyse hat gezeigt, dass dieses Modell rekapituliert viele der Signalwege der Lungenentwicklung 13. Vier Wochen nach der Maus PNX ist Alveolaroberfläche äquivalent zu der scheinoperierten Tieren 14. In diesem Manuskript beschreiben wir die Maus PNX und Schein PNX Verfahren.
Protocol
Representative Results
Discussion
Wir haben die detaillierte Beschreibung der Maus PNX und Maus Schein PNX Verfahren bis heute berichtet vorgesehen. Wir haben die Leser bewusst einige der häufigsten Fallstricke, dass die Ermittler das Erlernen der häufigsten Verfahren stoßen gemacht, und wir haben verschiedene Techniken, die von unserem Labor entwickelt, um gegen diese Gefahren zu mildern skizziert. Andere Labors nutzen dieses Modell können andere Technik Modifikationen entwickelt haben, oder verwenden Sie verschiedene Instrumente. Bei der Bewertung…
Disclosures
The authors have nothing to disclose.
Acknowledgements
The authors would like to acknowledge the Cincinnati Children’s Hospital Division of Veterinary Services for their assistance. This manuscript was supported by the National Institutes of Health K12 HD028827. Anna Perl PhD taught the authors this surgical procedure.
Materials
| Name of the reagent | Company | Catalogue number | Comments (optional) |
| 6-inch Vascular Clip Applicator | Teleflex Medical (WECK) | 137062 | |
| Horizon Small Titanium Red Clip | Teleflex Medical (WECK) | 1201 | |
| Narrow Pattern 12cm Curved Forceps | Fine Science Tools | 11003-12 | |
| Curved Serated 10 cm Graefe Forceps | Fine Science Tools | 11052-10 | |
| Castroviejo Needle Holder | Fine Science Tools | 12565-14 | |
| Straight 9 cm Strabismus Scissors (Blunt Tip) | Fine Science Tools | 14075-09 | |
| Straight 8.5 cm Hardened Fine Scissors | Fine Science Tools | 14090-09 | |
| Straight, Blunt Tip Cohan-Vannas Spring Scissors | Fine Science Tools | 15000-12 | |
| Skin Glue | Gluture | 32046 | |
| 22 ga angiocatheter | |||
| 24 ga angiocatheter | |||
| 3 mL luer lock syringe | |||
| 4 short retractors | |||
| 2 long retractors | |||
| 5-0 Prolene on curved cutting needle | Ethicon | 8698G | |
| 0.5 mL syringe on 27 ga needle | |||
| Normal Saline | |||
| Buprenorphine | |||
| Press-n-Seal Wrap | Glad Products Company | ||
| 12 inch X 12 inch cork board stack | Office Depot | ||
| 70% Ethanol | |||
| Betadine | |||
| Mouse Ventilator | Hugo Sachs Elektronnik | Minivent Type 845 | |
| Isoflurane Vaporizer | OHMEDA | Excel 210 SE | |
| artificial tear ointment | puralube | NDC: 17033-211-38 |
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