Bu çalışma, Ulusal Sağlık Enstitüleri (7R01HL098528-03) ve FAMRI Klinik Yenilikçi Ödülü ile desteklenmiştir.

1. Protein Transfeksiyon Reaktif hazırlanması <ol><li> Kuru film içeren tüp metanol ya da kloroform içinde 250 ul ekleyerek Pro-Ject Reaktif çözülür. </li><li> En yüksek hızda 10-20 saniye girdap. </li><li> Ayrı bir mikrosantrifüj tüpü içine Pro-Ject reaktif Pipet 20 ul. </li><li> Oda sıcaklığında 6 saat arasında, en az bir laminar akış başlığı altında Pro-Ject Reaktif içeren mikrosantrifüj tüpleri yerleştirerek çözücü buharlaşır. Bu tamamen kuru olmalıdır. Alternatif olarak, vakum kurutma cihazı kullanılarak Pro-Ject reaktif kurutun. </li><li> -20 ° C&#39;de saklayın tüpleri Bunlar, bu sıcaklıkta bir yıl için iyidir. </li></ol> 2. Pro-Ject Reaktif Protein ekleme <ol><li> Kurutuldu Pro-Ject transfeksiyon reaktifi 20 ul içeren bir tüp içine, ilgilenilen proteinin 2.0 mg ihtiva eden PBS Pipet 50 ul. </li><li> Protein ilave edildikten sonra, düşük hızda F vorteks çözüm karıştırmakya da 3-5 saniye oda sıcaklığında 30 dakika boyunca kuluçkaya izledi. </li></ol> 3. Protein içine tatbik <ol><li> Ketamin / ksilazin intraperitoneal (100 mg / kg ve 10 mg / kg) ile farenin anestezisi. </li><li> Sedasyon elde edildikten sonra, fareler, özel olarak tasarlanmış bir platform (Şekil 1) kullanılarak üst kesici dişler asılmıştır. </li><li> Forseps ve bir laringoskop gibi bir ataş kullanarak, orofarenks kateter (Şekil 2) tanıtılacak böylece açılır. Ses telleri fare trakea karşı bir ışık kaynağı koyarak görüntülenmiştir. </li><li> Protein / ProJect reaktif karışımı (50 ul) bir Penn Yüzyıl Micro kullanarak trakea yoluyla enjekte edilir. </li></ol>

<ol>
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Yazarlar ifşa etmek hiçbir çıkar çatışması var.

Diğer yöntemler üzerinde bu tekniğin avantajı, akciğer dokusunun kendisi içinde protein seviyeleri ve aktivite artışı, üretmesidir. Ayrıca, bu sadece hava yolları içinde kalan karşıt olarak akciğerin en uzak bölgelere nüfuz eder. Hatta tuzlu 15 ile hava lavaging sonra enjektat artan protein aktivitesi ölçüldü. Doku etkinlik analizleri protein hücreleri giriyor ve sadece fare hava boşlukları kalır olmadığını göstermektedir. Bu da fare alveoller ve hava yolları (Şekil 3...

<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>Pro-Ject</td>
 <td>Pierce Bio</td>
 <td>89850</td>
 <td></td>
 </tr>
 <tr>
 <td>Microsprayer</td>
 <td>Penn Century</td>
 <td>FMJ-250</td>
 <td></td>
 </tr>
 <tr>
 <td>Beta-galactosidase</td>
 <td>Pierce Bio</td>
 <td>89850</td>
 <td></td>
 </tr>
 <tr>
 <td>Beta-galactosidase antibody</td>
 <td>Santa Cruz Bio</td>
 <td>SC-19119</td>
 <td></td>
 </tr>
 <tr>
 <td>Mouse serum albumin</td>
 <td>Sigma Aldrich</td>
 <td>A3139</td>
 <td></td>
 </tr>
 <tr>
 <td>Ketamine/xylazine</td>
 <td>Sigma Aldrich</td>
 <td>K113</td>
 <td></td>
 </tr>
 </tbody>
</table>

protein transfection of mouse lung

Protein ekspresyonu arttırmak araştırmacılar daha önemli biyolojik süreçlerin düzenlenmesinde 1 o proteinin fonksiyonel rolünü anlamak için olanak sağlar. Akciğerde, bu artan gen ekspresyonu 4 ile proteini düzeylerini yükselten transgenik farenin 2,3 veya viral veya non-viral vektörlerin kullanmaktadır genetik yaklaşımlar, genellikle aracılığıyla elde edilmiştir. Transgenik farenin oluşturmak için pahalı ve zaman alıcıdır ve bir transgen ya da kronik gen ifadesinin rastgele yerleştirilmesi, normal akciğer gelişimi değişmesine neden olur ve bu nedenle modelin 5 yardımcı sınırlayabilir. Koşullu ifade oluşturmak için kullanılır kronik gen 6, ters tetrasiklin kontrollü transaktivatör (rtTA) fareler ile ilişkili sorunları ortadan koşullu transgenik, kendiliğinden hava sahası genişleme 7 geliştirmek iken. Transgenik olduğu gibi, viral ve non-viral vektörlerin kullanımı 8 pahalı ve doz-D provoke edebilirBu ependent inflamatuar yanıtları sonuçları 9 yıkmak ve ifade 10 engel. Ayrıca, tekrarlı dozların etkinlik vektör 11,12 geliştirilmiş bağışıklık tepkileri ile sınırlıdır. Araştırmacılar daha az inflamasyon kışkırtmak ve akciğer 13 içinde uzun ifade var adeno-ilişkili viral (AAV) vektörleri geliştiriyoruz. Β-galaktosidaz kullanarak, doğrudan bir proteini transfeksiyon tekniği kullanılarak, akciğer içinde hızla ve etkin biçimde artıran protein ekspresyonu için bir yöntem sunulmaktadır. Bu protokol, akciğer dokusu, kendisi içine penetrasyon sağlamak için, bir lipid-bazlı transfeksiyon reaktifi 20 ul (Pro-Ject, Bio Pierce) ile saflaştırılmış protein sabit tutar karışımları. Lipozomal proteini karışımı daha sonra, bir Micro (Penn Century, Philadelphia, PA) kullanılarak, trakea ile farelerin akciğerleri içine enjekte edilir. Micro akciğerler boyunca sıvı aerosol güzel bir tüy üretir. Tekniği kullanarakBu hava ve fareler 14. alveoller boyunca enjekte proteinin homojen birikimi göstermiştir. Lipid transfeksiyon teknik etki elde etmek için protein küçük bir miktarının kullanımına olanak sağlamaktadır. Bu aksi takdirde yüksek protein idare tarafından provoke olacağını inflamatuvar yanıt sınırlar. Gerçekten de, bu tekniği kullanarak biz önemli ölçüde akciğer lavajı hücreli 15 etkilemeden akciğerde PP2A etkinliği artırmak mümkün olduğunu yayınladı. Cebine 24 saat sonra alınan hücreli akciğer lavaj kontroller ile karşılaştırılabilir olmuştur (27 ± 31 genel 4 kontrol ± 5 albümin transfekte edilmiş, her grupta N = 6). Ayrıca, transgenik bir model oluşabilir akciğer gelişimsel değişimlerin veya yapısal değişiklikler neden olmadan proteini düzeylerini artırır. Ancak, tekrar yönetimlerin ihtiyacını protein ifadesinde uzun vadeli artar etkilerini inceleyen çalışmalar için bu tekniği daha az elverişli hale getirebilir. Bu durum, özellikle tru olacaktırkısa yarı ömürlü proteinler için e.

<html> Bizim tekniğin etkinliğini göstermek amacıyla Pro-Ject transfeksiyon reaktifi 20 ul PBS içeren 50 ul içinde eritildi fare 2 ug albümini (Sigma) ile farelerin trakea enjekte etmek için bir Micro (Penn Century) kullanılmıştır. Albümin tedavi edilen fareler bir beta-galaktosidaz protein 2 ug (Pierce Biyo) ile benzer bir şekilde muamele edilmiştir farenin ile karşılaştırıldı. Yirmi dört saat sonra, fareler kurban edildi ve akciğerler histolojik analiz için hazırlandı. Bir beta-galaktosidaz i?...

Watch this Scientific Journal Video about Protein Transfection of Mouse Lung at JoVE.com

Protein Transfection of Mouse Lung

Transgenik farenin ya da viral vektörler, akciğer içinde protein ekspresyonu artırmak için kullanılmıştır. Ancak, bu teknikler teknik olarak zor, zaman alıcı ve sonuçları etkilemesi hedef dışı etkileri vardır. Bizim protein transfeksiyon protokolü bir lipid tabanlı transfeksiyon reaktif ve düzgün akciğer hücrelerine aktif bir protein sunmak için bir ultra ince Micro kullanır.

Fare Akciğer Protein Transfeksiyon

Increasing protein expression enables researchers to  better understand the functional role of that protein in regulating key  biological processes1. In ...

Research

JoVE Journal

Biology

9.3K Görüntüleme.  St. Luke's Roosevelt Medical Center. Transgenik farenin ya da viral vektörler, akciğer içinde protein ekspresyonu artırmak için kullanılmıştır. Ancak, bu teknikler teknik olarak zor, zaman alıcı ve sonuçları etkilemesi hedef dışı etkileri vardır. Bizim protein transfeksiyon protokolü bir lipid tabanlı transfeksiyon reaktif ve düzgün akciğer hücrelerine aktif bir protein sunmak için bir ultra ince Micro kullanır.

Video: Protein Transfection of Mouse Lung

Gene-gun Transfection of Hippocampal Neurons

Hi, I'm Kma. I work in Case Lab at Brown University Clean Slicer stage with 70%ethanol. Place plate insert into six.Well plate with medium and incubate at 37 degree whole brain with tweezers between midbrain and four brainin. Isolate hippocampus on one side, isolate hippocampus from the second side. Place hippocampi onto A PBS drop.Aspirate out the PBS make sagittal sections using the tissue slicer. Repeat transfer slicers onto a perish by squatting with PBS wash sections by adding and aspirating PBS and medium gently. Separate sections with tweezers.Wash sections with PBS and media. Again, transfer sections onto the plate and insert. Aspirate out the media in sections using tweezers.Attach gene gun hose to the helium cylinder. Attach barrel to gene gun. Fill the magazine with bullets.Insert magazine into the Jing gun. Adjust the pressure on the helium tank shoot. EGFP coated beads onto the sections.And now.

Gen tabancası Transfeksiyon Hipokampal Nöronlar

Biyoloji

Staining of Proteins in Gels with Coomassie G-250 without Organic Solvent and Acetic Acid

In classical protein staining protocols using Coomassie Brilliant Blue (CBB), solutions with high contents of toxic and flammable organic solvents (Methanol, Ethanol or 2-Propanol) and acetic acid are used for fixation, staining and destaining of proteins in a gel after SDS-PAGE. To speed up the procedure, heating the staining solution in the microwave oven for a short time is frequently used. This usually results in evaporation of toxic or hazardous Methanol, Ethanol or 2-Propanol and a strong smell of acetic acid in the lab which should be avoided due to safety considerations. In a protocol originally published in two patent applications by E.M. Wondrak (US2001046709 (A1), US6319720 (B1)), an alternative composition of the staining solution is described in which no organic solvent or acid is used. The CBB is dissolved in bidistilled water (60-80mg of CBB G-250 per liter) and 35 mM HCl is added as the only other compound in the staining solution. The CBB staning of the gel is done after SDS-PAGE and thorough washing of the gel in bidistilled water. By heating the gel during the washing and staining steps, the process can be finished faster and no toxic or hazardous compunds are evaporating. The staining of proteins occurs already within 1 minute after heating the gel in staining solution and is fully developed after 15-30 min with a slightly blue background that is destained completely by prolonged washing of the stained gel in bidistilled water, without affecting the stained protein bands.

A short protocol for protein staining with Coomassie Brilliant Blue (CBB) G-250 in polyacrylamide gels is described without using organic solvents or acetic acid as in the classical staining procedures with CBB.

Organik Solvent ve Asetik Asit olmadan Jeller Coomassie G-250 ile Proteinlerin Boyama

In classical protein staining protocols using Coomassie Brilliant Blue (CBB), solutions with high contents of toxic and flammable organic solvents ...

Using the GELFREE 8100 Fractionation System for Molecular Weight-Based Fractionation with Liquid Phase Recovery

The GELFREE 8100 Fractionation System is a novel protein fractionation system designed to maximize protein recovery during molecular weight based fractionation. The system is comprised of single-use, 8-sample capacity cartridges and a benchtop GELFREE Fractionation Instrument. During separation, a constant voltage is applied between the anode and cathode reservoirs, and each protein mixture is electrophoretically driven from a loading chamber into a specially designed gel column gel. Proteins are concentrated into a tight band in a stacking gel, and separated based on their respective electrophoretic mobilities in a resolving gel. As proteins elute from the column, they are trapped and concentrated in liquid phase in the collection chamber, free of the gel. The instrument is then paused at specific time intervals, and fractions are collected using a pipette. This process is repeated until all desired fractions have been collected. If fewer than 8 samples are run on a cartridge, any unused chambers can be used in subsequent separations.
This novel technology facilitates the quick and simple separation of up to 8 complex protein mixtures simultaneously, and offers several advantages when compared to previously available fractionation methods. This system is capable of fractionating up to 1mg of total protein per channel, for a total of 8mg per cartridge. Intact proteins over a broad mass range are separated on the basis of molecular weight, retaining important physiochemical properties of the analyte. The liquid phase entrapment provides for high recovery while eliminating the need for band or spot cutting, making the fractionation process highly reproducible1.

The accompanying video describes the use of the GELFREE 8100 Fractionation System, which partitions complex protein samples on the basis of molecular weight and recovers the fractions in liquid phase. The video describes how the technology works, how it is used, and provides resultant data, with polyacrylamide gel electrophoresis analysis of fractionated bovine liver homogenate.

Sıvı Faz Kurtarma Moleküler Ağırlık Tabanlı Fraksiyonu GELFREE 8100 Fraksiyonu Sisteminin Kullanılması

The GELFREE 8100 Fractionation System is a novel protein fractionation system designed to maximize protein recovery during molecular weight based ...

Direct Tracheal Instillation of Solutes into Mouse Lung

Intratracheal instillations deliver solutes directly into the lungs. This procedure targets the delivery of the instillate into the distal regions of the lung, and is therefore often incorporated in studies aimed at studying alveoli. We provide a detailed survival protocol for performing intratracheal instillations in mice. Using this approach, one can target delivery of test solutes or solids (such as lung therapeutics, surfactants, viruses, and small oligonucleotides) into the distal lung. Tracheal instillations may be the preferred methodology, over inhalation protocols that may primarily target the upper respiratory tract and possibly expose the investigator to potentially hazardous substances. Additionally, in using the tracheal instillation protocol, animals can fully recover from the non-invasive procedure. This allows for making subsequent physiological measurements on test animals, or reinstallation using the same animal. The amount of instillate introduced into the lung must be carefully determined and osmotically balanced to ensure animal recovery. Typically, 30-75 &mu;L instillate volume can be introduced into mouse lung.

Intratracheal instillations deliver solutes directly into the lungs. This procedure targets the delivery of the instillate into the distal regions of the lung, and is therefore often incorporated in studies aimed at studying alveoli. We provide a detailed survival protocol for performing intratracheal instillations in mice.

Fare Akciğer içine çözünenlerin Doğrudan Trakeal damlatma

Intratracheal instillations deliver solutes directly into the lungs.  This procedure targets the delivery of the instillate into the distal regions of the ...

Mouse Embryonic Lung Culture, A System to Evaluate the Molecular Mechanisms of Branching

Lung primordial specification as well as branching morphogenesis, and the formation of various pulmonary cell lineages requires a specific interaction of the lung endoderm with its surrounding mesenchyme and mesothelium. Lung mesenchyme has been shown to be the source of inductive signals for lung branching morphogenesis. Epithelial-mesenchymal-mesothelial interactions are also critical to embryonic lung morphogenesis. Early embryonic lung organ culture is a very useful system to study epithelial-mesenchymal interactions. Both epithelial and mesenchymal morphogenesis proceeds under specific conditions that can be readily manipulated in this system (in the absence of maternal influence and blood flow). More importantly this technique can be readily done in a serumless, chemically defined culture media. Gain and loss of function can be achieved using expressed proteins, recombinant viral vectors and/or analysis of transgenic mouse strains, antisense RNA, as well as RNA interference gene knockdown.

Early embryonic lung organ culture is a very useful system to study epithelial-mesenchymal interactions. Both epithelial and mesenchymal morphogenesis proceeds under specific conditions that can be readily manipulated in this system.

Fare Embriyonik Akciğer Kültür, Dallanma Moleküler Mekanizmalar değerlendirin Bir Sistem

Lung primordial specification as well as branching morphogenesis, and the formation of various pulmonary cell lineages requires a specific interaction of ...

In vivo Imaging and Therapeutic Treatments in an Orthotopic Mouse Model of Ovarian Cancer

Human cancer and response to therapy is better represented in orthotopic animal models. This paper describes the development of an orthotopic mouse model of ovarian cancer, treatment of cancer via oral delivery of drugs, and monitoring of tumor cell behavior in response to drug treatment in real time using in vivo imaging system. In this orthotopic model, ovarian tumor cells expressing luciferase are applied topically by injecting them directly into the mouse bursa where each ovary is enclosed. Upon injection of D-luciferin, a substrate of firefly luciferase, luciferase-expressing cells generate bioluminescence signals. This signal is detected by the in vivo imaging system and allows for a non-invasive means of monitoring tumor growth, distribution, and regression in individual animals. Drug administration via oral gavage allows for a maximum dosing volume of 10 mL/kg body weight to be delivered directly to the stomach and closely resembles delivery of drugs in clinical treatments. Therefore, techniques described here, development of an orthotopic mouse model of ovarian cancer, oral delivery of drugs, and in vivo imaging, are useful for better understanding of human ovarian cancer and treatment and will improve targeting this disease.

In vivo Imaging and Therapeutic Treatments in an Orthotopic Mouse Model of Ovarian Cancer

Orthotopic animal models of ovarian cancer replicate better human disease and therefore enhance our understanding of cancer progression and tumor response to therapy. A mouse model receives an intrabursal injection of luciferase-expressing ovarian tumor cells. Treatment is administered via oral gavage. Tumor growth is monitored by in vivo imaging system.

In vivo Görüntüleme ve Yumurtalık Kanseri Ortotopik Fare Modeli Tedavi Tedaviler

Human cancer and response to therapy is better represented in orthotopic animal models.  This paper describes the development of an orthotopic mouse model ...

Characterization of the Isolated, Ventilated, and Instrumented Mouse Lung Perfused with Pulsatile Flow

The isolated, ventilated and instrumented mouse lung preparation allows steady and pulsatile pulmonary vascular pressure-flow relationships to be measured with independent control over pulmonary arterial flow rate, flow rate waveform, airway pressure and left atrial pressure. Pulmonary vascular resistance is calculated based on multi-point, steady pressure-flow curves; pulmonary vascular impedance is calculated from pulsatile pressure-flow curves obtained at a range of frequencies. As now recognized clinically, impedance is a superior measure of right ventricular afterload than resistance because it includes the effects of vascular compliance, which are not negligible, especially in the pulmonary circulation. Three important metrics of impedance - the zero hertz impedance Z0, the characteristic impedance ZC, and the index of wave reflection RW - provide insight into distal arterial cross-sectional area available for flow, proximal arterial stiffness and the upstream-downstream impedance mismatch, respectively. All results obtained in isolated, ventilated and perfused lungs are independent of sympathetic nervous system tone, volume status and the effects of anesthesia. We have used this technique to quantify the impact of pulmonary emboli and chronic hypoxia on resistance and impedance, and to differentiate between sites of action (i.e., proximal vs. distal) of vasoactive agents and disease using the pressure dependency of ZC. Furthermore, when these techniques are used with the lungs of genetically engineered strains of mice, the effects of molecular-level defects on pulmonary vascular structure and function can be determined.

The following protocol outlines the process of isolating, ventilating and instrumenting mouse lungs to measure steady or pulsatile pulmonary vascular pressure-flow relationships in order to quantify the effects of blood flow, airflow, airway changes and vascular changes on right ventricular afterload.

İzole, Havalandırmalı ve Enstrumanlı Fare Akciğer Karakterizasyonu Pulsatif Akış ile perfüze

The isolated, ventilated and instrumented mouse lung preparation allows steady and pulsatile pulmonary vascular pressure-flow relationships to be measured ...

Isolation &#38; Characterization of Hoechstlow CD45negative Mouse Lung Mesenchymal Stem Cells

Tissue resident mesenchymal stem cells (MSC) are important regulators of tissue repair or regeneration, fibrosis, inflammation, angiogenesis and tumor formation. Taken together these studies suggest that resident lung MSC play a role during pulmonary tissue homeostasis, injury and repair during diseases such as pulmonary fibrosis (PF) and arterial hypertension (PAH). Here we describe a technology to define a population of resident lung MSC. The definition of this population in vivo pulmonary tissue using a define set of markers facilitates the repeated isolation of a well-characterized stem cell population by flow cytometry and the study of a specific cell type and function.

Isolation &amp; Characterization of Hoechstlow CD45negative Mouse Lung Mesenchymal Stem Cells

In this article we demonstrate the isolation of murine resident lung mesenchymal stem cells (lung MSC), their expansion, characterization and analysis of immunomodulatory properties.

Hoechst İzolasyonu ve Karakterizasyonu Düşük CD45 Negatif Fare Akciğer Mezenkimal Kök Hücre

Tissue resident mesenchymal stem cells (MSC) are important regulators of tissue repair or regeneration, fibrosis, inflammation, angiogenesis and tumor ...

Generation of Mice Derived from Induced Pluripotent Stem Cells

The production of induced pluripotent stem cells (iPSCs) from somatic cells provides a means to create valuable tools for basic research and may also produce a source of patient-matched cells for regenerative therapies. iPSCs may be generated using multiple protocols and derived from multiple cell sources. Once generated, iPSCs are tested using a variety of assays including immunostaining for pluripotency markers, generation of three germ layers in embryoid bodies and teratomas, comparisons of gene expression with embryonic stem cells (ESCs) and production of chimeric mice with or without germline contribution2. Importantly, iPSC lines that pass these tests still vary in their capacity to produce different differentiated cell types2. This has made it difficult to establish which iPSC derivation protocols, donor cell sources or selection methods are most useful for different applications.
The most stringent test of whether a stem cell line has sufficient developmental potential to generate all tissues required for survival of an organism (termed full pluripotency) is tetraploid embryo complementation (TEC)3-5. Technically, TEC involves electrofusion of two-cell embryos to generate tetraploid (4n) one-cell embryos that can be cultured in vitro to the blastocyst stage6. Diploid (2n) pluripotent stem cells (e.g. ESCs or iPSCs) are then injected into the blastocoel cavity of the tetraploid blastocyst and transferred to a recipient female for gestation (see Figure 1). The tetraploid component of the complemented embryo contributes almost exclusively to the extraembryonic tissues (placenta, yolk sac), whereas the diploid cells constitute the embryo proper, resulting in a fetus derived entirely from the injected stem cell line.
Recently, we reported the derivation of iPSC lines that reproducibly generate adult mice via TEC1. These iPSC lines give rise to viable pups with efficiencies of 5-13%, which is comparable to ESCs3,4,7 and higher than that reported for most other iPSC lines8-12. These reports show that direct reprogramming can produce fully pluripotent iPSCs that match ESCs in their developmental potential and efficiency of generating pups in TEC tests. At present, it is not clear what distinguishes between fully pluripotent iPSCs and less potent lines13-15. Nor is it clear which reprogramming methods will produce these lines with the highest efficiency. Here we describe one method that produces fully pluripotent iPSCs and "all- iPSC" mice, which may be helpful for investigators wishing to compare the pluripotency of iPSC lines or establish the equivalence of different reprogramming methods.

Generating induced pluripotent stem cell (iPSC) lines produces lines of differing developmental potential even when they pass standard tests for pluripotency. Here we describe a protocol to produce mice derived entirely from iPSCs, which defines the iPSC lines as possessing full pluripotency1.

İsteyerek Pluripotent Kök Hücrelerinin Elde Edilen Fare Üretimi

The production of induced pluripotent stem cells (iPSCs) from somatic cells provides a means to create valuable tools for basic research and may also ...

Phenotyping Mouse Pulmonary Function In Vivo with the Lung Diffusing Capacity

The mouse is now the primary animal used to model a variety of lung diseases. To study the mechanisms that underlie such pathologies, phenotypic methods are needed that can quantify the pathologic changes. Furthermore, to provide translational relevance to the mouse models, such measurements should be tests that can easily be done in both humans and mice. Unfortunately, in the present literature few phenotypic measurements of lung function have direct application to humans. One exception is the diffusing capacity for carbon monoxide, which is a measurement that is routinely done in humans. In the present report, we describe a means to quickly and simply measure this diffusing capacity in mice. The procedure involves brief lung inflation with tracer gases in an anesthetized mouse, followed by a 1 min gas analysis time. We have tested the ability of this method to detect several lung pathologies, including emphysema, fibrosis, acute lung injury, and influenza and fungal lung infections, as well as monitoring lung maturation in young pups. Results show significant decreases in all the lung pathologies, as well as an increase in the diffusing capacity with lung maturation. This measurement of lung diffusing capacity thus provides a pulmonary function test that has broad application with its ability to detect phenotypic structural changes with most of the existing pathologic lung models.

Phenotyping Mouse Pulmonary Function In Vivo with the Lung Diffusing Capacity

We describe a means to quickly and simply measure the lung diffusing capacity in mice and show that it is sufficiently sensitive to phenotype changes in multiple common lung pathologies. This metric thus brings direct translational relevance to the mouse models, since diffusing capacity is also easily measured in humans.

Fenotiplendirme Fare Solunum Fonksiyon<em&gt; İn Vivo</em&gt; Akciğer Yayıcı Kapasite

The mouse is now the primary animal used to model a variety of lung diseases. To study the mechanisms that underlie such pathologies, phenotypic methods ...