PMID- 29708533 OWN - NLM STAT- MEDLINE DCOM- 20180730 LR - 20200416 IS - 1940-087X (Electronic) IS - 1940-087X (Linking) IP - 134 DP - 2018 Apr 16 TI - A Simple and Efficient Method for In Vivo Cardiac-specific Gene Manipulation by Intramyocardial Injection in Mice. LID - 10.3791/57074 [doi] LID - 57074 AB - Gene manipulation specifically in the heart significantly potentiate the investigation of cardiac disease pathomechanisms and their therapeutic potential. In vivo cardiac-specific gene delivery is commonly achieved by either systemic or local delivery. Systemic injection via tail vein is easy and efficient in manipulating cardiac gene expression by using recombinant adeno-associated virus 9 (AAV9). However, this method requires a relatively high amount of vector for efficient transduction, and may result in nontarget organ gene transduction. Here, we describe a simple, efficient, and time-saving method of intramyocardial injection for in vivo cardiac-specific gene manipulation in mice. Under anesthesia (without ventilation), the pectoral major and minor muscles were bluntly dissected, and the mouse heart was quickly exposed by manual externalization through a small incision at the fourth intercostal space. Subsequently, adenovirus encoding luciferase (Luc) and vitamin D receptor (VDR), or short hairpin RNA (shRNA) targeting VDR, was injected with a Hamilton syringe into the myocardium. Subsequent in vivo imaging demonstrated that luciferase was successfully overexpressed specifically in the heart. Moreover, Western blot analysis confirmed the successful overexpression or silencing of VDR in the mouse heart. Once mastered, this technique can be used for gene manipulation, as well as injection of cells or other materials such as nanogels in the mouse heart. FAU - Fu, Yanan AU - Fu Y AD - Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College; Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University. FAU - Jiang, Wenlong AU - Jiang W AD - Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University. FAU - Zhao, Yichao AU - Zhao Y AD - Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University. FAU - Huang, Yuli AU - Huang Y AD - Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College. FAU - Zhang, Heng AU - Zhang H AD - Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College; 13965270077@139.com. FAU - Wang, Hongju AU - Wang H AD - Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College. FAU - Pu, Jun AU - Pu J AD - Department of Cardiology, The First Affiliated Hospital of Bengbu Medical College; Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University; pujun310@hotmail.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Video-Audio Media DEP - 20180416 PL - United States TA - J Vis Exp JT - Journal of visualized experiments : JoVE JID - 101313252 SB - IM MH - Animals MH - Gene Transfer Techniques/*statistics & numerical data MH - Genetic Therapy/*methods MH - Genetic Vectors/pharmacology/*therapeutic use MH - Injections/*methods MH - Mice MH - Myocardium/cytology/*metabolism PMC - PMC5933510 EDAT- 2018/05/01 06:00 MHDA- 2018/07/31 06:00 PMCR- 2020/04/16 CRDT- 2018/05/01 06:00 PHST- 2018/05/01 06:00 [entrez] PHST- 2018/05/01 06:00 [pubmed] PHST- 2018/07/31 06:00 [medline] PHST- 2020/04/16 00:00 [pmc-release] AID - 57074 [pii] AID - 10.3791/57074 [doi] PST - epublish SO - J Vis Exp. 2018 Apr 16;(134):57074. doi: 10.3791/57074.