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Site-directed mutagenesis of human IL-29 and antineoplastic activity of the recombinant human IL-29 variant / 生物工程学报
Chinese Journal of Biotechnology ; (12): 702-710, 2015.
Article in Chinese | WPRIM | ID: wpr-240607
ABSTRACT
To explore the anti-tumor proliferation activity of human interleukin-29 (hIL-29) variant and based on bioinformatics analyzed data of hIL-29, a mutant gene hIL-29(mut33,35) was amplified by site-directed mutagenesis and megaprimer PCR. The hIL-29(mut33,35) was inserted into an eukaryotic expression plasmid pPIC9K and successfully expressed in Pichia pastoris GS115. A recombinant variant protein (rhIL-29(mut33,35)) was purified from the ferment supernatant of the engineering GS115. To observe the antineoplastic activity of the variant rhIL-29(mut33,35), a CCK-8 reagent was used to detect the anti-proliferation effect. Results show that it has strong anti-proliferation effect when acted on liver cancer cell BEL7402, colon cancer cell HCT8 and gastric cancer cell SGC7901. The inhibition ratios of the three tumor cells were (30.99 ± 1.58)%, (22.47 ± 1.37)% and (32.05 ± 2.02)%, respectively. In high dose group, the anti-proliferation effect of the rhIL-29(mut33,35) was stronger than that of wild type rhIL-29 (P < 0.01). This indicates the variant rhIL-29(mut33,35) has potential development value for medicine.
Subject(s)
Full text: Available Index: WPRIM (Western Pacific) Main subject: Pathology / Pharmacology / Pichia / Plasmids / Recombinant Proteins / Polymerase Chain Reaction / Mutagenesis, Site-Directed / Interleukins / Carcinoma, Hepatocellular / Cell Line, Tumor Limits: Humans Language: Chinese Journal: Chinese Journal of Biotechnology Year: 2015 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Pathology / Pharmacology / Pichia / Plasmids / Recombinant Proteins / Polymerase Chain Reaction / Mutagenesis, Site-Directed / Interleukins / Carcinoma, Hepatocellular / Cell Line, Tumor Limits: Humans Language: Chinese Journal: Chinese Journal of Biotechnology Year: 2015 Type: Article