Development of Spectinabilin Over-Producing Mutant Streptomyces sp. S-N87 having Nematicidal Activities
Abstract Spectinabilin (neoaureothin) is a rare nitrophenyl-substituted polyketide produced by some Streptomyces species. This compound is known to exhibit various biological activities such as anticancer, antibiotic, immunomodulatory, antimalarial and nematicidal effects. Despite being a valuable secondary metabolite for the development of novel drugs, the production yield of spectinabilin is < 200 mg/litre at the current level. To improve the yields of this promising compound without biosafety and regulation issues, this study conducted traditional mutagenesis. A total of 1,025 mutants were generated under high mortality conditions by NTG (N-methyl-N’-nitro-N-nitrosoguanidine) from parental strain Streptomyces sp. AN091965. One of the mutants, S-N87 showed up to about 10-fold spectinabilin productivity (354.8 ± 7.8 mg/L) compared to the parental strain Streptomyces sp. AN091965 (37.6 ± 5.6 mg/L) in flask culture conditions, representing the highest spectinabilin yield reported thus far. In addition, this strain showed a stable yield of 2.27 g/L even in a scaled-up environment (150 L tank fermentation), which suggests that the selected mutant is a genetically stable and robust strain. Further, the mutant Streptomyces sp. S-N87 that enhanced spectinabilin production stably showed a significant increase in nematicidal activities against pine wilt nematode compared to the parental strain. The present study is the first to develop a Streptomyces mutant that over-produces spectinabilin by traditional mutagenesis. Further studies such as whole-genome analysis and genetic modification are needed to provide a theoretical basis and insights into the polyketide synthase pathway of this talented mutant..
Medienart: |
Preprint |
---|
Erscheinungsjahr: |
2023 |
---|---|
Erschienen: |
2023 |
Enthalten in: |
ResearchSquare.com - (2023) vom: 17. Okt. Zur Gesamtaufnahme - year:2023 |
---|
Sprache: |
Englisch |
---|
Beteiligte Personen: |
Kang, Min-Kyoung [VerfasserIn] |
---|
Links: |
Volltext [kostenfrei] |
---|
Themen: |
---|
doi: |
10.21203/rs.3.rs-2516092/v1 |
---|
funding: |
|
---|---|
Förderinstitution / Projekttitel: |
|
PPN (Katalog-ID): |
XRA038587866 |
---|
LEADER | 01000caa a22002652 4500 | ||
---|---|---|---|
001 | XRA038587866 | ||
003 | DE-627 | ||
005 | 20231018145913.0 | ||
007 | cr uuu---uuuuu | ||
008 | 230203s2023 xx |||||o 00| ||eng c | ||
024 | 7 | |a 10.21203/rs.3.rs-2516092/v1 |2 doi | |
035 | |a (DE-627)XRA038587866 | ||
035 | |a (ResearchSquare)10.21203/rs.3.rs-2516092/v1 | ||
040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
041 | |a eng | ||
100 | 1 | |a Kang, Min-Kyoung |e verfasserin |4 aut | |
245 | 1 | 0 | |a Development of Spectinabilin Over-Producing Mutant Streptomyces sp. S-N87 having Nematicidal Activities |
264 | 1 | |c 2023 | |
336 | |a Text |b txt |2 rdacontent | ||
337 | |a Computermedien |b c |2 rdamedia | ||
338 | |a Online-Ressource |b cr |2 rdacarrier | ||
520 | |a Abstract Spectinabilin (neoaureothin) is a rare nitrophenyl-substituted polyketide produced by some Streptomyces species. This compound is known to exhibit various biological activities such as anticancer, antibiotic, immunomodulatory, antimalarial and nematicidal effects. Despite being a valuable secondary metabolite for the development of novel drugs, the production yield of spectinabilin is < 200 mg/litre at the current level. To improve the yields of this promising compound without biosafety and regulation issues, this study conducted traditional mutagenesis. A total of 1,025 mutants were generated under high mortality conditions by NTG (N-methyl-N’-nitro-N-nitrosoguanidine) from parental strain Streptomyces sp. AN091965. One of the mutants, S-N87 showed up to about 10-fold spectinabilin productivity (354.8 ± 7.8 mg/L) compared to the parental strain Streptomyces sp. AN091965 (37.6 ± 5.6 mg/L) in flask culture conditions, representing the highest spectinabilin yield reported thus far. In addition, this strain showed a stable yield of 2.27 g/L even in a scaled-up environment (150 L tank fermentation), which suggests that the selected mutant is a genetically stable and robust strain. Further, the mutant Streptomyces sp. S-N87 that enhanced spectinabilin production stably showed a significant increase in nematicidal activities against pine wilt nematode compared to the parental strain. The present study is the first to develop a Streptomyces mutant that over-produces spectinabilin by traditional mutagenesis. Further studies such as whole-genome analysis and genetic modification are needed to provide a theoretical basis and insights into the polyketide synthase pathway of this talented mutant. | ||
650 | 4 | |a Biology |7 (dpeaa)DE-84 | |
650 | 4 | |a 570 |7 (dpeaa)DE-84 | |
700 | 1 | |a Kim, Jong-Hoon |4 aut | |
700 | 1 | |a Moon, Kyung Ho |4 aut | |
700 | 1 | |a Jeong, Hyeon Ji |4 aut | |
700 | 1 | |a Lee, Byeong Min |4 aut | |
700 | 1 | |a Sung, Bong Hyun |4 aut | |
700 | 1 | |a Park, Dong-Jin |4 aut | |
700 | 1 | |a Son, Kwang-Hee |4 aut | |
773 | 0 | 8 | |i Enthalten in |t ResearchSquare.com |g (2023) vom: 17. Okt. |
773 | 1 | 8 | |g year:2023 |g day:17 |g month:10 |
856 | 4 | 0 | |u http://dx.doi.org/10.21203/rs.3.rs-2516092/v1 |z kostenfrei |3 Volltext |
912 | |a GBV_XRA | ||
951 | |a AR | ||
952 | |j 2023 |b 17 |c 10 |