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Updated: May 15, 2025

Genetic Manipulation of Cerebellar Granule Neurons In Vitro and In Vivo to Study Neuronal Morphology and Migration
Published on: March 17, 2014
C1QL1 regulates auditory nerve fibers growth via ELMO1-DOCK180-RAC1 integrin
Minglin Chen1,2, Yue Qi1,2, Shusheng Gong1,2
1Otorhinolaryngology Head and Neck Surgery Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
Background:
Complement C1q Like 1 (C1QL1), a secreted protein, is known to play an important role in synaptic maturation, regulation, and maintenance in central nervous system. C1QL1 is expressed in adult cochlea inner and outer hair cells. However, the mechanism of C1QL1 in cochlea remains unclear.
Objective:
This study aims to reveal the mechanism of C1ql1 gene in cochlea, including its target and pathway.
Material And Methods:
The protein-protein interaction analysis of C1QL1 was conducted with STRING database. The interaction between C1QL1 and BAI3 in cochlea was further confirmed by colocalization and co-immunoprecipitation. via upregulating and downregulating the expression of C1ql1, the factors in the pathway can be detected.
Results:
C1QL1 protein interacts with BAI3 protein in cochlea. C1ql1 overexpression had no effect on auditory phenotype. C1ql1 regulates auditory nerve fibers growth via BAI3 and ELMO1-DOCK180-RAC1 integrin. Meanwhile, C1ql1 overexpression inhibited the expression of TIAM1-PARD3 integrin.
Conclusions And Significance:
C1QL1 interacts with BAI3 in cochlea and C1ql1 regulates auditory nerve fibers growth via ELMO1-DOCK180-RAC1 integrin. C1ql1 overexpression can inhibit the expression of TIAM1-PARD3 integrin.
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