Metallo-β-lactamase Domain-Containing Protein 1 (MBLAC1) Is a Specific, High-Affinity Target for the Glutamate Transporter Inducer Ceftriaxone.
Metallo-β-lactamase Domain-Containing Protein 1 (MBLAC1) Is a Specific, High-Affinity Target for the Glutamate Transporter Inducer Ceftriaxone.
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金属-β-内酰胺酶结构域含有蛋白 1 (MBLAC1) 是谷氨酸转运蛋白诱导剂头孢曲松的特异性、高亲和力靶标。
DOI:
10.1021/acschemneuro.7b00232
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发表时间:
2017
影响因子:
5
通讯作者:
Blakely,RandyD
中科院分区:
文献类型:
--
作者:
Retzlaff,CassandraL;Kussrow,Amanda;Schorkopf,Tim;Saetear,Phoonthawee;Bornhop,DarrylJ;Hardaway,JAndrew;Sturgeon,SarahM;Wright,Jane;Blakely,RandyD
Ceftriaxone, a β-lactam antibiotic, has been reported to act independently of its antimicrobial actions to normalize perturbed central nervous system glutamate levels, principally by elevating expression of glial glutamate transporters. Identification of a specific, high-affinity target for ceftriaxone could significantly impact therapeutic development for multiple brain disorders, ranging from neurodegenerative disorders to addiction. Recently, we identified a glial-expressedCaenorhabditis elegansgene,swip-10, that encodes a metallo-β-lactamase domain-containing protein, and limits glutamate-dependent changes in dopamine neuron excitability. Bioinformatic analyses identifiedMBLAC1as the likely mammalian orthologue ofswip-10. Using cyanogen bromide immobilized ceftriaxone for affinity capture experiments and backscattering interferometry to monitor MBLAC1 binding of unmodified ceftriaxone, we obtained evidence for specific, high affinity (KD= 2.2 μM) binding of ceftriaxone to MBLAC1. We discuss our findings with respect to MBLAC1 as a potentially exclusive, high-affinity binding partner of ceftriaxone in the CNS, and the path forward in the development of novel, MBLAC1-based therapeutics.
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