Proteomic approach for caudal trauma-induced acute phase proteins reveals that creatine kinase is a key acute phase protein in amphioxus humoral fluid.
Elevated creatine kinase (CK) in the circulation was generally regarded to be a passive release from muscle damage. We utilized proteomic methodologies to characterize amphioxus humoral fluid APPs in response to caudal trauma, and found several spots of CK alterations with up-regulation and pI shift. Its amount and enzyme activity showed a dynamic pattern of APP in humoral fluid accompanied with a reduction in enzyme activity of muscle, whereas there was no significant difference in CK amount of muscle and the other tissues and in CK enzyme activity of the other tissues between different time points of sample collection following caudal trauma. In addition, CK phosphorylation regulation during injury was not achieved by monoclonal antibodies separately against phosphothreonine, phosphotyrosine, and phosphoserine. These results suggested that the CK elevation of humoral fluid might be from muscle, being an active response to caudal trauma rather than a passive release from muscle damage. Therefore, CK ability in response to caudal trauma should be highly concerned.
Gao
Yuan-yuan
YY
Center for Proteomics, Department of Biology, School of Life Sciences, Xiamen University, Xiamen, Fujian 361005, People's Republic of China.
Zhang
Dan-feng
DF
Li
Hui
H
Liu
Runzhong
R
Zhuang
Zheng-hong
ZH
Li
Qi-fu
QF
Wang
San-ying
SY
Peng
Xuan-xian
XX
D000209:Acute-Phase Proteins / Q000737:chemistry*; D000818:Animals; D000911:Antibodies, Monoclonal / Q000737:chemistry; D043344:Chordata / Q000276:immunology* / Q000378:metabolism; D003001:Cloning, Molecular; D003402:Creatine Kinase / Q000737:chemistry / Q000502:physiology*; D005786:Gene Expression Regulation; D010766:Phosphorylation; D010768:Phosphoserine / Q000737:chemistry; D010769:Phosphothreonine / Q000737:chemistry; D019000:Phosphotyrosine / Q000737:chemistry; D040901:Proteomics / Q000379:methods; D021241:Spectrometry, Mass, Electrospray Ionization; D013997:Time Factors; D014945:Wound Healing
D000209:Acute-Phase Proteins; D000911:Antibodies, Monoclonal; D010769:Phosphothreonine; D010768:Phosphoserine; D019000:Phosphotyrosine; D003402:Creatine Kinase