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All Journal Jurnal Bioteknologi & Biosains Indonesia (JBBI) Jurnal Bioteknologi & Biosains Indonesia
Jamsari Jamsari
Magister Program of Biotechnology, School of Postgraduate, Universitas Andalas, Padang, West Sumatera, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Health Professions

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ANALYSIS OF L-Asparaginase II ENZYME ACTIVITY FROM NATIVE AND RECOMBINANT Escherichia coli DH10B FOR THE APPLICATION OF ACUTE LYMPHOBLASTIC LEUKAEMIA THERAPY Keysha Putri Febiona; Dian Pertiwi; Arni Amir; Lily Syukriani; Dessy Arisanty; Almurdi Almurdi; Lisana Shiddiqin Aliya; Jamsari Jamsari
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 13 No. 1 (2026)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

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Abstract

Acute Lymphoblastic Leukemia (ALL) is a blood cancer that occurs due to abnormal proliferation of lymphoid progenitor cells. L-asparaginase II is an enzyme used to treat this disease by inducing apoptosis in cancer cells encoded by the AnsB gene. Previous studies have shown complications and toxicity in commercial L-asparaginase, necessitating exploration of L-asparaginase sources. Serratia plymuthica UBCF_13 is one of the microorganisms that encodes the AnsB gene. This study consisted of inoculation of native E. coli DH10B and E. coli DH10B pET28a(+)_AnsB, molecular validation, enzyme activity testing using direct nesslerisation method, and analysis of extracellular and intracellular protein profiles using SDS-PAGE. Enzyme activity and protein profiles were compared with S. plymuthica UBCF_13, and Isopropyl β-D-1-thiogalactopyranoside (IPTG) induction was performed on each bacteria as a comparison. The results showed the highest L-asparaginase II enzyme activity in E. coli DH10B pET28a(+)_AnsB induced with IPTG with an average enzyme activity of 0.392 ± 0.017 U/mL. Protein profile analysis using SDS-PAGE supported this finding, showing a thicker 36.5 kDa protein band compared to other bacteria. Statistical testing using One Way ANOVA showed a significant difference in L-asparaginase II enzyme activity in native E. coli DH10B and E. coli DH10B pET28a(+)_AnsB. It can be concluded that there was an increase in activity in recombinant E. coli DH10B compared to its native.
ANALYSIS OF L-Asparaginase II ENZYME ACTIVITY FROM NATIVE AND RECOMBINANT Escherichia coli DH10B FOR THE APPLICATION OF ACUTE LYMPHOBLASTIC LEUKAEMIA THERAPY Keysha Putri Febiona; Dian Pertiwi; Arni Amir; Lily Syukriani; Dessy Arisanty; Almurdi Almurdi; Lisana Shiddiqin Aliya; Jamsari Jamsari
Jurnal Bioteknologi & Biosains Indonesia (JBBI) Vol. 13 No. 1 (2026)
Publisher : BRIN - Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Acute Lymphoblastic Leukemia (ALL) is a blood cancer that occurs due to abnormal proliferation of lymphoid progenitor cells. L-asparaginase II is an enzyme used to treat this disease by inducing apoptosis in cancer cells encoded by the AnsB gene. Previous studies have shown complications and toxicity in commercial L-asparaginase, necessitating exploration of L-asparaginase sources. Serratia plymuthica UBCF_13 is one of the microorganisms that encodes the AnsB gene. This study consisted of inoculation of native E. coli DH10B and E. coli DH10B pET28a(+)_AnsB, molecular validation, enzyme activity testing using direct nesslerisation method, and analysis of extracellular and intracellular protein profiles using SDS-PAGE. Enzyme activity and protein profiles were compared with S. plymuthica UBCF_13, and Isopropyl β-D-1-thiogalactopyranoside (IPTG) induction was performed on each bacteria as a comparison. The results showed the highest L-asparaginase II enzyme activity in E. coli DH10B pET28a(+)_AnsB induced with IPTG with an average enzyme activity of 0.392 ± 0.017 U/mL. Protein profile analysis using SDS-PAGE supported this finding, showing a thicker 36.5 kDa protein band compared to other bacteria. Statistical testing using One Way ANOVA showed a significant difference in L-asparaginase II enzyme activity in native E. coli DH10B and E. coli DH10B pET28a(+)_AnsB. It can be concluded that there was an increase in activity in recombinant E. coli DH10B compared to its native.
Co-Authors Almurdi Almurdi Arni Amir Dessy Arisanty Dian Pertiwi Keysha Putri Febiona Lily Syukriani Lisana Shiddiqin Aliya