Streptomyces isolates

Streptomyces isolates have yielded the majority of human, animal, and agricultural antibiotics, as well as a number of fundamental chemotherapy medicines. Streptomyces is the largest antibiotic-producing genus of Actinomycetota, producing chemotherapy, antibacterial, antifungal, antiparasitic drugs, and immunosuppressants.[1] Streptomyces isolates are typically initiated with the aerial hyphal formation from the mycelium.[2]

Anticancer medicines
Doxorubicin intercalating DNA.

Streptomyces, yielded the medicines doxorubicin (Doxil), daunorubicin (DaunoXome), and streptozotocin (Zanosar). Doxorubicin is the precursor to valrubicin (Valstar), myocet, and pirarubicin. Daunorubicin is the precursor to idarubicin (Idamycin), epirubicin (Ellence), and zorubicin.

Streptomyces is the original source of dactinomycin (Cosmegen), bleomycin (Blenoxane), pingyangmycin (Bleomycin A5), mitomycin C (Mutamycin), rebeccamycin, staurosporine (precursor to stauprimide and midostaurin), neothramycin, aclarubicin, tomaymycin, sibiromycin, and mazethramycin.

Derivatives of Streptomycetes isolate migrastatin, including isomigrastatin, dorrigocin A & B, and the synthetic derivative macroketone, are being researched for anticancer activity.

Antibiotics
See also: Antibiotic § Natural product-based antibiotic discovery

Most clinical antibiotics were found during the "golden age of antibiotics" (1940s–1960s). Actinomycin was the first antibiotic isolated from Streptomyces in 1940, followed by streptomycin three years later. Antibiotics from Streptomyces isolates (including various aminoglycosides) would go on to comprise over two-thirds of all marketed antibiotics.

Streptomyces-derived antibiotics include:

Clavulanic acid (Streptomyces clavuligerus) is used in combination with some antibiotics (such as amoxicillin) to weaken bacterial-resistance. Novel anti-infectives being developed include the guadinomines (from Streptomyces sp. K01-0509),[14] inhibitors of the type III secretion system.

Non-Streptomyces actinomycetes, filamentous fungi, and non-filamentous bacteria, have also yielded important antibiotics.

Antifungals

Nystatin (Streptomyces noursei), amphotericin B (Streptomyces nodosus), ossamycin (Streptomyces hygroscopicus), and natamycin (Streptomyces natalensis) are antifungals isolated from Streptomyces.

Immunosuppressants

Sirolimus (Rapamycin), ascomycin, and tacrolimus were isolated from Streptomyces. Pimecrolimus is a derivative of ascomycin. Ubenimex is derived from S. olivoreticuli.[15]

Antiparasitics

Streptomyces avermitilis synthesizes the antiparasitic ivermectin (Stromectol). Other antiparasitics made by Streptomyces include, milbemycin oxime, moxidectin, and milbemycin.

Biotechnology
Biosynthesis of sirolimus
Biosynthesis of doxorubicin

Traditionally, Escherichia coli is the choice bacterium to express eukaryotic and recombinant genes. E. coli is well understood and has a successful track record producing insulin, the artemisinin precursor artemisinic acid, and filgrastim (Neupogen).[16][17] However, use of E. coli has limitations including misfolding of eukaryotic proteins, insolubility issues, deposition in inclusion bodies, [18] low secretion efficiency, secretion to periplasmic space.

Streptomyces offers potential advantages including superior secretion mechanisms, higher yields, a simpler end-product purification process, making Streptomyces an attractive alternative to E. coli and Bacillus subtilis.[18]

Streptomyces coelicolor, Streptomyces avermitilis, Streptomyces griseus, and Saccharopolyspora erythraea, are capable of secondary metabolite production. Streptomyces coelicolor has shown useful for the heterologous expression of proteins. Methods like "ribosome engineering" have been used to achieve 180-fold higher yields with S. coelicolor.[19]

Other

StreptomeDB, a directory of Streptomyces isolates, contains over 2400 compounds isolated from more than 1900 strains.[20][21] Streptomyces hygroscopicus and Streptomyces viridochromeogenes produce the herbicide bialaphos. Expansion of Streptomyces screenings have included endophytes, extremophiles, and marine varieties.

A recent screening of TCM extracts revealed a Streptomyces that produces a number of antitubercular pluramycins.[22] Wailupemycins are bio-active pyrones isolated from marine Streptomyces.[23]

Mayamycin has been shown to have cytotoxic properties.[24][25]

Germicidin are a group of four compounds that act as autoregulatory inhibitors of spore germination.[26][27]

See also
Wikispecies has information related to Streptomyces.

References
  1. Watve MG, Tickoo R, Jog MM, Bhole BD (November 2001). "How many antibiotics are produced by the genus Streptomyces?". Arch. Microbiol. 176 (5): 386–90. doi:10.1007/s002030100345. PMID 11702082. S2CID 603765.
  2. Schrey, Silvia D.; et al. (2012). "Production of fungal and bacterial growth modulating secondary metabolites is widespread among mycorrhiza-associated streptomycetes". BMC Microbiology. 12 (1): 164. doi:10.1186/1471-2180-12-164. PMC 3487804. PMID 22852578.
  3. Akagawa, H.; Okanishi, M.; Umezawa, H. (1975). "A Plasmid Involved in Chloramphenicol Production in Streptomyces venezuelae: Evidence from Genetic Mapping". Journal of General Microbiology. 90 (2): 336–46. doi:10.1099/00221287-90-2-336. PMID 1194895.
  4. Miao, V. (2005). "Daptomycin biosynthesis in Streptomyces roseosporus: Cloning and analysis of the gene cluster and revision of peptide stereochemistry". Microbiology. 151 (5): 1507–23. doi:10.1099/mic.0.27757-0. PMID 15870461.
  5. Woodyer RD, Shao Z, Thomas PM, et al. (November 2006). "Heterologous production of fosfomycin and identification of the minimal biosynthetic gene cluster". Chemistry & Biology. 13 (11): 1171–82. doi:10.1016/j.chembiol.2006.09.007. PMID 17113999.
  6. Peschke, Ursula; Schmidt, Heike; Zhang, Hui-Zhan; Piepersberg, Wolfgang (1995). "Molecular characterization of the lincomycin-production gene cluster of Streptomyces lincolnensis 78-11". Molecular Microbiology. 16 (6): 1137–56. doi:10.1111/j.1365-2958.1995.tb02338.x. PMID 8577249. S2CID 45162659.
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  8. L. Sankaran & Burton M. Pogell (1975-12-01). "Biosynthesis of Puromycin in Streptomyces alboniger: Regulation and Properties of O-Demethylpuromycin O-Methyltransferase". Antimicrobial Agents and Chemotherapy. 8 (6): 721–32. doi:10.1128/AAC.8.6.721. PMC 429454. PMID 1211926.
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  10. Distler, Jürgen; Ebert, Andrea; Mansouri, Kambiz; Pissowotzki, Klaus; Stockmann, Michael; Piepersberg, Wolfgang (1987). "Gene cluster for streptomycin biosynthesis inStreptomyces griseus: Nucleotide sequence of three genes and analysis of transcriptional activity". Nucleic Acids Research. 15 (19): 8041–56. doi:10.1093/nar/15.19.8041. PMC 306325. PMID 3118332.
  11. Dr. Mark Nelson; Robert A. Greenwald; Wolfgang Hillen; Mark L. Nelson (2001). Tetracyclines in biology, chemistry and medicine. Birkhäuser. pp. 8–. ISBN 978-3-7643-6282-9. Retrieved 17 January 2012.
  12. Maskey, RP; Fotso, S; Sevvana, M; Usón, I; Grün-Wollny, I; Laatsch, H (2006). "Kettapeptin: Isolation, structure elucidation and activity of a new hexadepsipeptide antibiotic from a terrestrial Streptomyces sp". The Journal of Antibiotics. 59 (5): 309–14. doi:10.1038/ja.2006.44. PMID 16883782.
  13. Kim, HY; Kim, JD; Hong, JS; Ham, JH; Kim, BS (2013). "Identification of antifungal niphimycin from Streptomyces sp. KP6107 by screening based on adenylate kinase assay". Journal of Basic Microbiology. 53 (7): 581–9. doi:10.1002/jobm.201200045. PMID 22915202. S2CID 7724547.
  14. Holmes, TC; May, AE; Zaleta-Rivera, K; Ruby, JG; Skewes-Cox, P; Fischbach, MA; Derisi, JL; Iwatsuki, M; Ōmura, S; Khosla, C (2012). "Molecular insights into the biosynthesis of guadinomine: A type III secretion system inhibitor". Journal of the American Chemical Society. 134 (42): 17797–806. doi:10.1021/ja308622d. PMC 3483642. PMID 23030602.
  15. Bauvois, B; Dauzonne, D (January 2006). "Aminopeptidase-N/CD13 (EC 3.4.11.2) inhibitors: Chemistry, biological evaluations, and therapeutic prospects". Medicinal Research Reviews. 26 (1): 88–130. doi:10.1002/med.20044. PMC 7168514. PMID 16216010.
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  17. Payne G, DelaCruz N, Coppella S (1990). "Improved production of heterologous protein from Streptomyces lividans". Appl Microbiol Biotechnol. 33 (4): 395–400. doi:10.1007/BF00176653. PMID 1369282. S2CID 19287805.
  18. Binnie C, Cossar J, Stewart D (1997). "Heterologous biopharmaceutical protein expression in Streptomyces". Trends Biotechnol. 15 (8): 315–20. doi:10.1016/S0167-7799(97)01062-7. PMID 9263479.
  19. Wang G, Hosaka T, Ochi K (2008). "Dramatic activation of antibiotic production in Streptomyces coelicolor by cumulative drug resistance mutations". Appl Environ Microbiol. 74 (9): 2834–40. Bibcode:2008ApEnM..74.2834W. doi:10.1128/AEM.02800-07. PMC 2394871. PMID 18310410.
  20. Lucas X, Senger C, Erxleben A, Grüning BA, Döring K, Mosch J, et al. (2013). "StreptomeDB: a resource for natural compounds isolated from Streptomyces species". Nucleic Acids Res. 41 (Database issue): D1130–6. doi:10.1093/nar/gks1253. PMC 3531085. PMID 23193280.
  21. "| Pharmaceutical Bioinformatics". 2 November 2018.
  22. Liu M, Abdel-Mageed WM, Ren B, He W, Huang P, Li X, et al. (2014). "Endophytic Streptomyces sp. Y3111 from traditional Chinese medicine produced antitubercular pluramycins". Appl Microbiol Biotechnol. 98 (3): 1077–85. doi:10.1007/s00253-013-5335-6. PMID 24190497. S2CID 15866711.
  23. Kalaitzis, John A (2013). "Discovery, Biosynthesis, and Rational Engineering of Novel Enterocin and Wailupemycin Polyketide Analogues". Metabolomics Tools for Natural Product Discovery. Methods in Molecular Biology. Vol. 1055. pp. 171–189. doi:10.1007/978-1-62703-577-4_13. ISBN 978-1-62703-576-7. PMID 23963911.
  24. Bo, Sheng Tao; Xu, Zi Fei; Yang, Li; Cheng, Ping; Tan, Ren Xiang; Jiao, Rui Hua; Ge, Hui Ming (June 2018). "Structure and biosynthesis of mayamycin B, a new polyketide with antibacterial activity from Streptomyces sp. 120454". The Journal of Antibiotics. 71 (6): 601–605. doi:10.1038/s41429-018-0039-x. ISSN 1881-1469. PMID 29515228. S2CID 3720406.
  25. Schneemann, I; Kajahn, I; Ohlendorf, B; Zinecker, H; Erhard, A; Nagel, K; Wiese, J; Imhoff, J. F. (2010). "Mayamycin, a cytotoxic polyketide from a Streptomyces strain isolated from the marine sponge Halichondria panicea". Journal of Natural Products. 73 (7): 1309–12. doi:10.1021/np100135b. PMID 20545334.
  26. Aoki, Y; Matsumoto, D; Kawaide, H; Natsume, M (September 2011). "Physiological role of germicidins in spore germination and hyphal elongation in Streptomyces coelicolor A3(2)". The Journal of Antibiotics. 64 (9): 607–11. doi:10.1038/ja.2011.59. PMID 21792209.
  27. Petersen, F; Zähner, H; Metzger, JW; Freund, S; Hummel, RP (July 1993). "Germicidin, an autoregulative germination inhibitor of Streptomyces viridochromogenes NRRL B-1551". The Journal of Antibiotics. 46 (7): 1126–38. doi:10.7164/antibiotics.46.1126. PMID 8360109.
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