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關鍵詞 南方紅豆杉;內生菌;抗腫瘤活性;細胞增殖;細胞遷移
中圖分類號 R285 文獻標識碼 A 文章編號 0517-6611(2024)19-0145-06
doi:10.3969/j.issn.0517-6611.2024.19.032
開放科學(資源服務)標識碼(OSID):
Antitumor Activity of an Endophytic Bacteria HDSW from Taxus chinensis var.mairei Cheng et L.K.Fu
LI Ping,HU Jian-ran,GUO Chun-yan et al
(Department of Biological Science and Technology,Jinzhong University,Jinzhong,Shanxi 030619)
Abstract [Objective]To identify the antitumor endophytic bacterium HDSW of Taxus chinensis var.mairei and preliminarily study its antitumor mechanism.[Method]The strain HDSW was identified based on 16S rDNA sequencing.The inhibitory activity of the organic solvent extract of HDSW fermentation broth on gastric cancer cell line MGC-803 was detected by MTT assay,plate cell colony formation assay,cell adhesion assay,scratch assay,and flow cytometry.The molecular mechanism was explored by real-time PCR.[Result]The strain HDSW was identified as Bacillus pumilus.The ethyl acetate extract of the fermentation broth could effectively reduce the survival rate,weaken the adhesion capability,inhibit migration capability,and induce cell apoptosis of the gastric cells MGC-803.The ethyl acetate extract from the fermentation broth of strain HDSW could significantly enhance the expression of pro-apoptotic genes p53,Bax and Caspase 3,and inhibit the expression of anti-apoptotic gene Bcl-2.[Conclusion]The endophytic Bacillus HDSW from Taxus chinensis var.mairei can produce secondary metabolites with significant anti-gastric cancer cell MGC-803 activity,which can be extracted by ethyl acetate,and possess potential development value.
Key words Taxus chinensis var.mairei Cheng et L.K.Fu;Endophytic bacteria;Antitumor;Cell proliferation;Cell migration
基金項目 山西省基礎研究計劃(自由探索類)青年項目(202203021222292);山西省基礎研究計劃(自由探索類)面上項目(20210302123493);山西省教育廳高等學校科技創新項目(2022L501,2021L487);晉中學院“百億工程”天然產物開發利用創新團隊培育項目。
作者簡介 李平(1983—),女,山西大同人,副教授,博士,從事微生物學及天然產物活性研究。*通信作者,副教授,博士,從事天然產物活性研究。
收稿日期 2024-05-05
南方紅豆杉(Taxus chinensis var.mairei Cheng et L.K.Fu)是常綠喬木,為我國一級瀕危保護植物,主要分布于我國陜西、河南、江西、廣西、福建等省(區)[1]。山西省是南方紅豆杉在我國自然分布的最北界,主要位于太行山南段以及中條山東端區域,海拔750~1 000 m的濕潤山坡及水流旁[2]。……