Developmental expression of calretinin in the mouse cochlea
This study investigated the expression of calretinin (CR) in the mouse cochlea from embryonic day 17 (E17) to adulthood through immunofluorescence. At E17, CR immunoreactivity was only detected in the inner hair cells (IHCs). At E19, the IHCs and spiral ganglion neurons (SGNs) begin to express CR....
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PAGEPress Publications
2024-11-01
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| Series: | European Journal of Histochemistry |
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| Online Access: | https://www.ejh.it/index.php/ejh/article/view/4137 |
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| author | Wenjing Liu Yongchun Zhang Cheng Liang Xuefang Jiang |
| author_facet | Wenjing Liu Yongchun Zhang Cheng Liang Xuefang Jiang |
| author_sort | Wenjing Liu |
| collection | DOAJ |
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This study investigated the expression of calretinin (CR) in the mouse cochlea from embryonic day 17 (E17) to adulthood through immunofluorescence. At E17, CR immunoreactivity was only detected in the inner hair cells (IHCs). At E19, the IHCs and spiral ganglion neurons (SGNs) begin to express CR. At birth, CR immunoreactivity was confined primarily to the IHCs and the majority of the SGNs, as identified by TUJ1, both the cytoplasm and the nucleus of SGNs exhibited CR positivity. At postnatal day 2 (P2), auditory nerve fibers reaching the IHCs were stained for CR. CR continued to be expressed in the IHCs, whereas only single row of outer hair cells (OHCs) were positive for CR. By P5, CR expression was evident in IHCs and the three rows of OHCs, with SGNs soma and their neurite projections also displaying CR immunoreactivity. From P8 through adulthood, CR expression persisted in the SGNs and their afferent neurite projections to the IHCs, as well as in IHCs and OHCs. Dual labeling of CR with afferent nerve marker neurofilament 200 (NF200) demonstrated that NF 200-positive SGN somas were encompassed by CR-labeled plasma membrane of SGNs, and NF 200 was co-localized with CR in the afferent nerve fibers innervating the IHCs. We also described the expression of peripherin, a marker for type II SGNs, in the mouse cochlea at various postnatal stages. Peripherin showed a distinct spatio-temporal expression compared to CR in auditory nerve fibers. No co-expression of peripherin and CR was detected in adult. Dynamic expression patterns of CR in the embryonic and postnatal cochlea supported its roles in cochlear development.
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| format | Article |
| id | doaj-art-e11325142d004e5ea7fbc722187f70d5 |
| institution | DOAJ |
| issn | 1121-760X 2038-8306 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | PAGEPress Publications |
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| series | European Journal of Histochemistry |
| spelling | doaj-art-e11325142d004e5ea7fbc722187f70d52025-08-20T02:49:47ZengPAGEPress PublicationsEuropean Journal of Histochemistry1121-760X2038-83062024-11-0168410.4081/ejh.2024.4137Developmental expression of calretinin in the mouse cochleaWenjing Liu0https://orcid.org/0000-0002-2245-4199Yongchun Zhang1Cheng Liang2Xuefang Jiang3Otolaryngology & Head and Neck Center, Cancer Center, Department of Otolaryngology, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), HangzhouDepartment of Otorhinolaryngology-Head and Neck Surgery, Zhongda Hospital, Southeast University, NanjingDepartment of Otorhinolaryngology-Head and Neck Surgery, Zhongda Hospital, Southeast University, NanjingOtolaryngology & Head and Neck Center, Cancer Center, Department of Otolaryngology, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou This study investigated the expression of calretinin (CR) in the mouse cochlea from embryonic day 17 (E17) to adulthood through immunofluorescence. At E17, CR immunoreactivity was only detected in the inner hair cells (IHCs). At E19, the IHCs and spiral ganglion neurons (SGNs) begin to express CR. At birth, CR immunoreactivity was confined primarily to the IHCs and the majority of the SGNs, as identified by TUJ1, both the cytoplasm and the nucleus of SGNs exhibited CR positivity. At postnatal day 2 (P2), auditory nerve fibers reaching the IHCs were stained for CR. CR continued to be expressed in the IHCs, whereas only single row of outer hair cells (OHCs) were positive for CR. By P5, CR expression was evident in IHCs and the three rows of OHCs, with SGNs soma and their neurite projections also displaying CR immunoreactivity. From P8 through adulthood, CR expression persisted in the SGNs and their afferent neurite projections to the IHCs, as well as in IHCs and OHCs. Dual labeling of CR with afferent nerve marker neurofilament 200 (NF200) demonstrated that NF 200-positive SGN somas were encompassed by CR-labeled plasma membrane of SGNs, and NF 200 was co-localized with CR in the afferent nerve fibers innervating the IHCs. We also described the expression of peripherin, a marker for type II SGNs, in the mouse cochlea at various postnatal stages. Peripherin showed a distinct spatio-temporal expression compared to CR in auditory nerve fibers. No co-expression of peripherin and CR was detected in adult. Dynamic expression patterns of CR in the embryonic and postnatal cochlea supported its roles in cochlear development. https://www.ejh.it/index.php/ejh/article/view/4137Calretinincochleamouseimmunofluorescence |
| spellingShingle | Wenjing Liu Yongchun Zhang Cheng Liang Xuefang Jiang Developmental expression of calretinin in the mouse cochlea European Journal of Histochemistry Calretinin cochlea mouse immunofluorescence |
| title | Developmental expression of calretinin in the mouse cochlea |
| title_full | Developmental expression of calretinin in the mouse cochlea |
| title_fullStr | Developmental expression of calretinin in the mouse cochlea |
| title_full_unstemmed | Developmental expression of calretinin in the mouse cochlea |
| title_short | Developmental expression of calretinin in the mouse cochlea |
| title_sort | developmental expression of calretinin in the mouse cochlea |
| topic | Calretinin cochlea mouse immunofluorescence |
| url | https://www.ejh.it/index.php/ejh/article/view/4137 |
| work_keys_str_mv | AT wenjingliu developmentalexpressionofcalretinininthemousecochlea AT yongchunzhang developmentalexpressionofcalretinininthemousecochlea AT chengliang developmentalexpressionofcalretinininthemousecochlea AT xuefangjiang developmentalexpressionofcalretinininthemousecochlea |