PMID- 25809464 OWN - NLM STAT- MEDLINE DCOM- 20160112 LR - 20181113 IS - 1476-5462 (Electronic) IS - 0969-7128 (Linking) VI - 22 IP - 7 DP - 2015 Jul TI - Cochlear protection against cisplatin by viral transfection of X-linked inhibitor of apoptosis protein across round window membrane. PG - 546-52 LID - 10.1038/gt.2015.22 [doi] AB - We have previously demonstrated that both age-related and noise-induced hearing loss are reduced in transgenic mice that ubiquitously overexpress X-linked inhibitor of apoptosis protein (XIAP). In view of the therapeutic implications of these findings, we have developed a minimally invasive surgical method to deliver adenoid-associated virus (AAV) across the round window membrane (RWM) of the cochlea, enabling efficient gene transfer to hair cells and sensory neurons in this enclosed structure. This RWM approach was used in the present study to evaluate the effectiveness of AAV-mediated XIAP overexpression in protecting against cisplatin-induced ototoxicity. Two weeks following surgery, AAV-derived XIAP was detected in the majority of inner and outer hair cells, resulting in a threefold elevation of this antiapoptotic protein in the cochlea. The protection of AAV-mediated XIAP overexpression was evaluated in animals treated with cisplatin at a dose of 4 mg kg(-1) per day for 4-7 consecutive days. The XIAP overexpression was found to attenuate cisplatin-induced hearing loss by ~22 dB. This was accompanied by a reduction of the loss of vulnerable hair cells and sensory neurons in the cochlea by 13%. FAU - Jie, H AU - Jie H AD - Department of Otolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, China. FAU - Tao, S AU - Tao S AD - Department of Physiology, Medical College, Southeast University, Nanjing, China. FAU - Liu, L AU - Liu L AD - Department of Physiology, Medical College, Southeast University, Nanjing, China. FAU - Xia, L AU - Xia L AD - Department of Otolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, China. FAU - Charko, A AU - Charko A AD - School of Human Communication Disorder, Dalhousie University, Halifax, Nova Scotia, Canada. FAU - Yu, Z AU - Yu Z AD - School of Human Communication Disorder, Dalhousie University, Halifax, Nova Scotia, Canada. FAU - Bance, M AU - Bance M AD - Department of Surgery, Division of Otolaryngology, Dalhousie University, Halifax, Nova Scotia, Canada. FAU - Yin, S AU - Yin S AD - Department of Otolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, China. FAU - Robertson, G S AU - Robertson GS AD - Departments of Psychiatry and Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada. FAU - Wang, J AU - Wang J AUID- ORCID: 0000000336336799 AD - 1] Department of Otolaryngology, Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, China [2] School of Human Communication Disorder, Dalhousie University, Halifax, Nova Scotia, Canada. LA - eng PT - Journal Article DEP - 20150326 PL - England TA - Gene Ther JT - Gene therapy JID - 9421525 RN - 0 (Antineoplastic Agents) RN - 0 (X-Linked Inhibitor of Apoptosis Protein) RN - Q20Q21Q62J (Cisplatin) SB - IM MH - Animals MH - Antineoplastic Agents/*toxicity MH - Cisplatin/*toxicity MH - Cochlea/*drug effects/metabolism MH - Dependovirus/genetics/*metabolism MH - Genetic Therapy/methods MH - Genetic Vectors MH - Guinea Pigs MH - Hair Cells, Auditory/metabolism MH - Hearing Loss/*chemically induced/*prevention & control MH - Round Window, Ear/metabolism MH - Sensory Receptor Cells/metabolism MH - Transfection MH - X-Linked Inhibitor of Apoptosis Protein/genetics/*metabolism EDAT- 2015/03/27 06:00 MHDA- 2016/01/13 06:00 CRDT- 2015/03/27 06:00 PHST- 2014/11/03 00:00 [received] PHST- 2015/02/15 00:00 [revised] PHST- 2015/02/18 00:00 [accepted] PHST- 2015/03/27 06:00 [entrez] PHST- 2015/03/27 06:00 [pubmed] PHST- 2016/01/13 06:00 [medline] AID - gt201522 [pii] AID - 10.1038/gt.2015.22 [doi] PST - ppublish SO - Gene Ther. 2015 Jul;22(7):546-52. doi: 10.1038/gt.2015.22. Epub 2015 Mar 26.