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RNAi-Based Therapy: Prospect as Cancer Treatment Soentoro, Samuel E; Timothy, Michael; Jo, Juandy
Medicinus Vol 13, No 2 (2024): February
Publisher : Fakultas Kedokteran Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19166/med.v13i2.8110

Cancer is one of the deadliest form of diseases in humans, with the annual deaths ranging in the millions. Conventional treatments including chemotherapy, radiotherapy, or surgery has their limitations, including common off-target and non-specific effects. Ribonucleic acid interference (RNAi) offers a new strategy for treating cancer by silencing specific genes to prevent gene expression. This review highlights the application of RNAi-based approach in targeting cancer, discusses its potential advantages and limitations, summarizes the existing clinical trials and provides a greater understanding of RNAi-based therapy in cancer.

Assessment on the Antimicrobial Activity of Lactiplantibacillus plantarum SU-KC1a against Listeria monocytogenes ATCC-7644 Timothy, Michael; Samantha, Ariela; Sugata, Marcelia; Tan, Tjie Jan; Jo, Juandy
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 10, No 1 (2025): February 2025
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v10i1.8038

Lactobacillus species are particularly noteworthy due to their ability to synthesize a variety of antimicrobial substances, including organic acids and bacteriocins. Lactiplantibacillus plantarum SU-KC1a, a member of the genus of Lactobacillus, had been previously isolated from human breast milk by our group. A preliminary in silico investigation had identified that Lpb. plantarum SU-KC1a possessed genes responsible for plantaricin, which is a type of bacteriocin produced by Lpb. plantarum strains. This study therefore aimed to assess the antibacterial activity of Lpb. plantarum SU-KC1a against pathogenic Listeria monocytogenes ATCC-7644 and to induce the biosynthesis of plantaricin by Lpb. plantarum SU-KC1a through co-culture with L. monocytogenes ATCC-7644 as the inducer strain. Our results showed that the cell-free supernatants from both co-culture and monoculture of Lpb. plantarum SU-KC1a exhibited a modest antibacterial activity against L. monocytogenes ATCC-7644. However, it was further determined that the inhibitory effect was not due to the production of plantaricin. Instead, it was primary attributed to the production of organic acids, which decreased the pH and inhibited the growth of L. monocytogenes ATCC-7644. In conclusion, our study demonstrated that Lpb. plantarum SU-KC1a could exert a modest antibacterial activity towards L. monocytogenes ATCC-7644, but not through the induction of plantaricin.

RNAi-Based Therapy: Prospect as Cancer Treatment Soentoro, Samuel E; Timothy, Michael; Jo, Juandy
Medicinus Vol. 13 No. 2 (2024): February
Publisher : Fakultas Kedokteran Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19166/med.v13i2.8110

Cancer is one of the deadliest form of diseases in humans, with the annual deaths ranging in the millions. Conventional treatments including chemotherapy, radiotherapy, or surgery has their limitations, including common off-target and non-specific effects. Ribonucleic acid interference (RNAi) offers a new strategy for treating cancer by silencing specific genes to prevent gene expression. This review highlights the application of RNAi-based approach in targeting cancer, discusses its potential advantages and limitations, summarizes the existing clinical trials and provides a greater understanding of RNAi-based therapy in cancer.

Assessment on the Antimicrobial Activity of Lactiplantibacillus plantarum SU-KC1a against Listeria monocytogenes ATCC-7644 Timothy, Michael; Samantha, Ariela; Sugata, Marcelia; Tan, Tjie Jan; Jo, Juandy
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 10, No 1 (2025): February 2025
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v10i1.8038

Lactobacillus species are particularly noteworthy due to their ability to synthesize a variety of antimicrobial substances, including organic acids and bacteriocins. Lactiplantibacillus plantarum SU-KC1a, a member of the genus of Lactobacillus, had been previously isolated from human breast milk by our group. A preliminary in silico investigation had identified that Lpb. plantarum SU-KC1a possessed genes responsible for plantaricin, which is a type of bacteriocin produced by Lpb. plantarum strains. This study therefore aimed to assess the antibacterial activity of Lpb. plantarum SU-KC1a against pathogenic Listeria monocytogenes ATCC-7644 and to induce the biosynthesis of plantaricin by Lpb. plantarum SU-KC1a through co-culture with L. monocytogenes ATCC-7644 as the inducer strain. Our results showed that the cell-free supernatants from both co-culture and monoculture of Lpb. plantarum SU-KC1a exhibited a modest antibacterial activity against L. monocytogenes ATCC-7644. However, it was further determined that the inhibitory effect was not due to the production of plantaricin. Instead, it was primary attributed to the production of organic acids, which decreased the pH and inhibited the growth of L. monocytogenes ATCC-7644. In conclusion, our study demonstrated that Lpb. plantarum SU-KC1a could exert a modest antibacterial activity towards L. monocytogenes ATCC-7644, but not through the induction of plantaricin.

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