[Effects of cultivated Cordyceps sinensis on proliferation and apoptosis of human leukemia K562 cells]. 2018

Xue-Lian Bai, and Shu-Xian Yang, and Yu Shan, and Wen-Jia Li, and Jing Li, and Ying Xiao, and Xue-Feng Hu, and Li Cao
Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China.

The present study was designed to investigate the effect of cultivated Cordyceps sinensis (CCS) on leukemia-derived K562 cells, and further explore the underlying mechanisms. After routine culture of K562 cells, MTT assay was used to detect the effect of CCS on survivel of human leukemia cell lines K562;DAPI staining was used to observe the morphological changes of the nucleus and AO/EB staining was used to observe cell apoptosis. JC-1 staining was employed to detect the changes in mitochondrial membrane potential. Flow cytometry (FCM) was used to detect cell cycle distribution, and Western blot analysis was used to detect the expression levels of Bax, Bcl-2, caspase 3, caspase 8, cyclin D1, CDK2, and CDK4 in K562 cells. The results showed that CCS (0.345-5.524 g·L⁻¹) substantially suppressed proliferation of K562 cells and induced G₁/S phase arrest in a dose-dependent manner. DAPI and AO/EB staining indicated that cell apoptosis was significantly induced by CCS treatment, accompanied by decreased mitochondrial membrane potential demonstrated by JC-1 staining. Western blot results showed that CCS significantly increased the expression of Bax and, meanwhile, decreased the expression levels of Bcl-2, cyclin D1, CDK2, CDK4, caspase 3 and caspase 8. Collectively, our data demonstrated that CCS dose-dependently suppressed cell proliferation and induced cell apoptosis in K562 cells, and the mechanism might be associated with inducing cell cycle arrest, regulating Bcl-2/Bax ratio and activating the mitochondrial apoptosis pathway.

UI MeSH Term Description Entries
D008419 Materia Medica Materials or substances used in the composition of traditional medical remedies. The use of this term in MeSH was formerly restricted to historical articles or those concerned with traditional medicine, but it can also refer to homeopathic remedies. Nosodes are specific types of homeopathic remedies prepared from causal agents or disease products. Homeopathic Remedies,Nosodes,Medica, Materia,Remedies, Homeopathic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D017209 Apoptosis A regulated cell death mechanism characterized by distinctive morphologic changes in the nucleus and cytoplasm, including the endonucleolytic cleavage of genomic DNA, at regularly spaced, internucleosomal sites, i.e., DNA FRAGMENTATION. It is genetically programmed and serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth. Apoptosis, Extrinsic Pathway,Apoptosis, Intrinsic Pathway,Caspase-Dependent Apoptosis,Classic Apoptosis,Classical Apoptosis,Programmed Cell Death,Programmed Cell Death, Type I,Apoptoses, Extrinsic Pathway,Apoptoses, Intrinsic Pathway,Apoptosis, Caspase-Dependent,Apoptosis, Classic,Apoptosis, Classical,Caspase Dependent Apoptosis,Cell Death, Programmed,Classic Apoptoses,Extrinsic Pathway Apoptoses,Extrinsic Pathway Apoptosis,Intrinsic Pathway Apoptoses,Intrinsic Pathway Apoptosis
D049109 Cell Proliferation All of the processes involved in increasing CELL NUMBER including CELL DIVISION. Cell Growth in Number,Cellular Proliferation,Cell Multiplication,Cell Number Growth,Growth, Cell Number,Multiplication, Cell,Number Growth, Cell,Proliferation, Cell,Proliferation, Cellular
D051017 Apoptosis Regulatory Proteins A large group of proteins that control APOPTOSIS. This family of proteins includes many ONCOGENE PROTEINS as well as a wide variety of classes of INTRACELLULAR SIGNALING PEPTIDES AND PROTEINS such as CASPASES. Anti-Apoptotic Protein,Anti-Apoptotic Proteins,Apoptosis Inducing Protein,Apoptosis Inhibiting Protein,Apoptosis Regulatory Protein,Pro-Apoptotic Protein,Pro-Apoptotic Proteins,Programmed Cell Death Protein,Apoptosis Inducing Proteins,Apoptosis Inhibiting Proteins,Death Factors (Apoptosis),Programmed Cell Death Proteins,Survival Factors (Apoptosis),Anti Apoptotic Protein,Anti Apoptotic Proteins,Inducing Protein, Apoptosis,Inducing Proteins, Apoptosis,Inhibiting Protein, Apoptosis,Inhibiting Proteins, Apoptosis,Pro Apoptotic Protein,Pro Apoptotic Proteins,Protein, Anti-Apoptotic,Protein, Apoptosis Inducing,Protein, Apoptosis Inhibiting,Protein, Apoptosis Regulatory,Protein, Pro-Apoptotic,Proteins, Anti-Apoptotic,Proteins, Apoptosis Inducing,Proteins, Apoptosis Inhibiting,Proteins, Pro-Apoptotic,Regulatory Protein, Apoptosis,Regulatory Proteins, Apoptosis
D020014 K562 Cells An ERYTHROLEUKEMIA cell line derived from a CHRONIC MYELOID LEUKEMIA patient in BLAST CRISIS. Cells, K562
D032661 Cordyceps A genus of ascomycetous fungi (ASCOMYCOTA), family Clavicipitaceae, order HYPOCREALES, that grows by infecting insect larvae or mature insects with spores that germinate often before the cocoon is formed. Caterpillar Fungus,Ophiocordyceps sinensis,Sphaeria sinensis,Cordyceps militaris,Cordyceps sinensis,Fungus, Caterpillar

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