A Hydrogel Construct and Fibrin-based Glue Approach to Deliver Therapeutics in a Murine Myocardial Infarction Model.

Molly Melhem; Tor Jensen; Larissa Reinkensmeyer; Luke Knapp; Jordan Flewellyn; Lawrence Schook

doi:10.3791/52562

ヒドロゲルは、構築し、マウス心筋梗塞モデルにおける治療薬を送達するためのフィブリンベースの接着剤...

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A Hydrogel Construct and Fibrin-based Glue Approach to Deliver Therapeutics in a Murine Myocardial Infarction Model.

ヒドロゲルは、構築し、マウス心筋梗塞モデルにおける治療薬を送達するためのフィブリンベースの接着剤のアプローチ。

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06:15 min

June 14, 2015

DOI: 10.3791/52562-v

Molly Melhem¹, Tor Jensen¹, Larissa Reinkensmeyer¹, Luke Knapp¹, Jordan Flewellyn¹, Lawrence Schook¹

¹Department of Bioengineering,University of Illinois at Urbana-Champaign

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Overview

This protocol aims to enhance cell engraftment for stem cell treatment of myocardial infarctions using a hydrogel system and fibrin-based glue. By maintaining cell-to-tissue contact post-infarction, this method increases the therapeutic potential at the injury site.

Key Study Components

Area of Science

Stem Cell Therapy
Cardiovascular Medicine
Regenerative Medicine

Background

Myocardial infarctions lead to significant heart damage.
Cell engraftment is crucial for effective stem cell therapies.
Hydrogels can improve cell delivery and retention.
Fibrin glue aids in securing the hydrogel to the heart surface.

Purpose of Study

To minimize damage from myocardial infarctions.
To evaluate the effectiveness of hydrogel patches in heart repair.
To determine optimal cell delivery methods for improving heart function.

Methods Used

Thoracotomy to expose the heart surface.
Induction of myocardial infarction via suture knot placement.
Attachment of hydrogel patch using fibrin glue.
Histological analysis and echocardiography for evaluation.

Main Results

Improved cell-to-tissue contact post-infarction.
Enhanced therapeutic potential at the injury site.
Evaluation of heart structure and function changes.
Insights into effective cell delivery methods.

Conclusions

The hydrogel patch method shows promise in cardiac repair.
Further research is needed to optimize stem cell therapies.
This approach may answer critical questions in stem cell engineering.

Frequently Asked Questions

What is the main goal of the hydrogel patch?

The main goal is to minimize damage from myocardial infarctions by improving cell engraftment.

How is the myocardial infarction induced?

It is induced by placing a small suture knot at the left coronary artery.

What methods are used to evaluate heart function?

Histological analysis and small animal echocardiography are used for evaluation.

What role does fibrin glue play in this procedure?

Fibrin glue is used to attach the hydrogel patch to the heart surface.

Why is cell-to-tissue contact important?

Maintaining cell-to-tissue contact enhances the therapeutic potential at the injury site.

What are the implications of this study for stem cell therapy?

This study may provide insights into effective cell delivery methods and improve heart function.

このプロトコルは、心筋梗塞の幹細胞治療のための細胞生着不良の制限を、ハイドロゲルシステムとフィブリンベースの接着剤の使用を通じて緩和することを目的としています。このアプローチにより、梗塞後の細胞間接触を維持でき、損傷部位における有益な薬剤の治療可能性が高まります。

この手順の全体的な目標は、心筋梗塞後の損傷を最小限に抑えるために、治療用ハイドロゲルパッチを心臓の表面に移すことです。これは、最初に開胸術によって心臓の表面を露出させることによって達成されます。2番目のステップでは、小さな縫合糸の結び目が左冠状動脈に配置され、心筋梗塞を誘発します。

次に、治療用ヒドロゲルパッチをフィブリン接着剤で心臓の表面に接着し、次に胸腔を閉じます。最終的に、組織学的分析と小動物心エコー検査を使用して、これらの介入技術の存在下と不在下で発生する心臓の構造と機能の変化を評価します。この方法は、心機能の改善に必要な細胞数や送達方法を決定するなど、幹細胞工学分野の重要な質問に答えるのに役立ちます。

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