1.Transmission of mouse senile amyloid fibrils in skeletal muscle
Jia HUO ; Junqiao QIAN ; Chenli LI ; Keiichi HIGUCHI ; Qianyu GUO ; Jinze QIAN
Chinese Journal of Zoonoses 2014;(12):1201-1205
ABSTRACT:Recently ,prion‐like transmission has been found in various amyloidosis .AApoAII amyloid fibrils in mouse senile amyloidosis have exhibited transmissibility .AApoAII amyloid fibrils ,which were excreted from mice and contained in fe‐ces or milk ,cause mouse senile amyloidosis .However ,transmissibility of AApoAII amyloid fibrils through other pathways has not yet been established .In this study ,we injected AApoAII amyloid fibrils into R1 .P1‐A poa2c mice to induce AApoAII sys‐temic amyloidosis .Two months later ,AApoAII amyloid fibrils ,which deposited in the skeletal muscles of amyloid‐affected mice ,were used to induce AApoAII systemic amyloidosis .Mouse senile amyloidosis which deposited in skeletal muscles could induce secondary transmission of AApoAII amyloidosis .The evidence of transmission through skeletal muscles in non‐prion systemic amyloidosis is found in our study .This pathway of transmission provides new insight into the potential for food‐borne pathogenesis and etiology of systemic amyloidosis .
2. Detection of circulating tumor cells by recombinant virus
Yueguo LI ; Xiaolong ZONG ; Qianyu HUO ; Jinfu XU ; Wenzheng LI ; Lingmin YANG ; Yajun GU
Chinese Journal of Experimental and Clinical Virology 2017;31(4):375-378
The detection and molecular characterization of circulating tumor cells(CTCs) is one of the most important tool for liquid biopsy, which has the potential to enable non-invasive diagnostic tests for personalized medicine. Commercial platforms represented by CellSearch, the first FDA approved assay, have been considered to be valid for CTCs detection. However, special equipment and consumptive materials are required in the techniques listed above. Besides, most of them can not differentiate between apoptotic and viable cells, which indicates the portion of active and functional CTCs. Therefore, how to develop novel method for CTCs enrichment with metastatic potential has great significance in clinical routine. Telomerase-specific replication-selective oncolytic viruses expressing green fluorescent protein(GFP), including herpes simplex virus and adenovirus, allow the detection for human CTCs in the peripheral blood. After 24 h of transfection with recombinant virus, the tumor cells stably express GFP, and it could be used for CTCs counting by fluorescent microscopy or flow cytometry. Moreover, downstream analysis would be achieved by combination with PCR or DNA sequencing. Recombinant virus enables early detection of metastatic tumor cells, because the fluorescent signal is amplified only in viable, infected CTCs, by viral replication. This GFP-expressing virus-based method is remarkably sensitive, simple, and feasible, and it offers a new opportunity to detect and characterize CTCs in clinical routine.
3.Natural killer cells in obstetric antiphospholipid syndrome.
Rongxiu HUO ; Qianyu GUO ; Junping HU ; Na LI ; Hechao LIU ; Zhaoliang ZHANG ; Liangyu MI ; Xinyue PENG ; Liyun ZHANG ; Ke XU
Chinese Medical Journal 2022;135(7):790-792