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2018 ; 22
(7
): 3298-3307
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The role of septin 7 in physiology and pathological disease: A systematic review
of current status
#MMPMID29602250
Wang X
; Fei F
; Qu J
; Li C
; Li Y
; Zhang S
J Cell Mol Med
2018[Jul]; 22
(7
): 3298-3307
PMID29602250
show ga
Septins are a conserved family of cytoskeletal GTPases present in different
organisms, including yeast, drosophila, Caenorhabditis elegans and humans. In
humans, septins are involved in various cellular processes, including exocytosis,
apoptosis, leukemogenesis, carcinogenesis and neurodegeneration. Septin 7 is
unique out of 13 human septins. Mammalian septin 6, septin 7, septin 2 and septin
9 coisolate together in complexes to form the core unit for the generation of the
septin filaments. Physiological septin filaments are hetero-oligomeric complexes
consisting of core septin hexamers and octamers. Furthermore, septin 7 plays a
crucial role in cytokinesis and mitosis. Septin 7 is localized to the filopodia
and branches of developing hippocampal neurons, and is the most abundant septin
in the adult rat forebrain as well as a structural component of the human and
mouse sperm annuli. Septin 7 is crucial to the spine morphogenesis and dendrite
growth in neurons, and is also a structural constituent of the annulus in human
and mouse sperm. It can suppress growth of some tumours such as glioma and
papillary thyroid carcinoma. However, the molecular mechanisms of involvement of
septin 7 in human disease, especially in the development of cancer, remain
unclear. This review focuses on the structure, function and mechanism of septin 7
in vivo, and summarizes the role of septin 7 in cell proliferation, cytokinesis,
nervous and reproductive systems, as well as the underlying molecular events
linking septin 7 to various diseases, such as Alzheimer's disease, schizophrenia,
neuropsychiatric systemic lupus erythematosus, tumour and so on.