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Chemical Structure| 1393-48-2 Chemical Structure| 1393-48-2

Structure of Thiostrepton
CAS No.: 1393-48-2

Chemical Structure| 1393-48-2

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Thiostrepton is a natural cyclic oligopeptide antibiotic, is a natural product of the ribosomally synthesized and post-translationally modified peptide (RiPP) class.

Synonyms: Bryamycin; Thiactin; Thiostreptin A

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Product Details of Thiostrepton

CAS No. :1393-48-2
Formula : C72H85N19O18S5
M.W : 1664.89
SMILES Code : O=C(N[C@@]1(CCC(C2=NC(C(NC(C(NC(C(N)=O)=C)=O)=C)=O)=CS2)=N[C@H]1C3=CSC([C@@H](NC(C4=CSC([C@@H](NC5=O)C(O)([C@@H](C)O)C)=N4)=O)[C@H](OC(C6=NC7=C(C([C@H](C)O)=C6)C=C[C@@H](N[C@H]8C(CC)C)[C@@H]7O)=O)C)=N3)C9=NC(C(N[C@H](C(N/C(C%10=N[C@@H]5CS%10)=C/C)=O)[C@@H](C)O)=O)=CS9)[C@@H](NC(C(NC([C@@H](NC8=O)C)=O)=C)=O)C
Synonyms :
Bryamycin; Thiactin; Thiostreptin A
MDL No. :MFCD00135828

Safety of Thiostrepton

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H312-H332
Precautionary Statements:P280

Isoform Comparison

Biological Activity

In Vitro:

Cell Line
Concentration Treated Time Description References
E. coli 70S ribosomes 0.15 μM 10 minutes To study the inhibitory effect of Thiostrepton on the GTPase activity of EF-G and EF4, the results showed that Thiostrepton significantly inhibited the GTPase activity of both EF-G and EF4. PMC3245911
EL4 cells 0.5 μM, 1 μM, 2 μM 24 hours To investigate the effect of TST on RORγt expression in EL4 cells, results showed that TST induced ubiquitination and degradation of RORγt by promoting the binding of Itch to RORγt. PMC10616104
Human monocyte-derived macrophages (hMDMs) 2.5 μM 24 hours Thiostrepton induced hMDMs to express proinflammatory cytokines TNFα and IL-1β and downregulate the M2 chemokine CCL24. Functional enrichment analysis showed that IFN/NFκB pathway, TNF-mediated pathway, oxidative-reduction process, protein polyubiquitination, and cellular response to LPS were upregulated, while DNA replication, cell cycle, and cell matrix adhesion were downregulated. PMC7858590
Mouse bone marrow macrophages (BMMs) 2.5 μM 24 hours Thiostrepton inhibited the expression of TAM/M2-associated genes Arg1, Fizz1, Vegfa, Ym1, and Tgfb but upregulated the expression of M1-associated genes Tnf, Il1b, Cxcl2, and Nos2. PMC7858590
Human peripheral blood mononuclear cell (PBMC)-derived macrophages 10 mM 24 hours To study the effect of Thiostrepton on macrophage polarization, results showed that Thiostrepton did not significantly promote M2 to M1 macrophage repolarization but caused slight reductions in CD86 and CD206 expression in M2 macrophages. PMC10828769
70S ribosomes 100 µM 3 minutes To study the effect of thiostrepton on EF-G-dependent GTP hydrolysis, results showed that thiostrepton inhibited the turnover of EF-G but did not affect single-round GTP hydrolysis. PMC22252
H1299 cells 5 μM 48 hours Reduced FOXM1 and PD-L1 expression, inhibited cell proliferation PMC9561767
PC9 cells 5 μM 48 hours Reduced FOXM1 and PD-L1 expression, inhibited cell proliferation PMC9561767
HCT-8 cells 2 μM 48 hours To test the anti-proliferative activity of Thiostrepton against CRC cells PMC6988281
HCT116 cells 2 μM 48 hours To test the anti-proliferative activity of Thiostrepton against CRC cells PMC6988281
HCT-15 cells 5 µM and 10 µM 48 hours Induced apoptosis in CRSC subpopulations and inhibited their sphere and colony formation capabilities. PMC4650716
HT-29 cells 5 µM and 10 µM 48 hours Induced apoptosis in CRSC subpopulations and inhibited their sphere and colony formation capabilities. PMC4650716
Panc-1 0–250 μM 48 hours To evaluate the inhibitory effect of TST on the proliferation of pancreatic cancer cells, the results showed that TST significantly reduced the growth of pancreatic cancer cells in a dose-dependent manner. PMC9300693
MIA PaCa-2 0–250 μM 48 hours To evaluate the inhibitory effect of TST on the proliferation of pancreatic cancer cells, the results showed that TST significantly reduced the growth of pancreatic cancer cells in a dose-dependent manner. PMC9300693
BxPC-3 0–250 μM 48 hours To evaluate the inhibitory effect of TST on the proliferation of pancreatic cancer cells, the results showed that TST significantly reduced the growth of pancreatic cancer cells in a dose-dependent manner. PMC9300693
hTERT-HPNE 0–250 μM 48 hours To evaluate the inhibitory effect of TST on the proliferation of normal pancreatic ductal epithelial cells, the results showed that TST had low toxicity to normal cells. PMC9300693
Human neuroglioma H4 cells 0.5, 5, 50 µM 6 hours Autophagy induction was assessed by measuring GFP-LC3 positive puncta, and 175 compounds were selected PMC7206967
Human osteosarcoma U2OS cells 50 µM 6 hours ATP release was assessed by measuring quinacrine positive dots, and Thiostrepton was identified as a potential ICD enhancer PMC7206967
Th17 cells 0.01 μM, 0.25 μM, 5 μM 72 hours To investigate the effect of TST on Th17 cell differentiation, results showed that TST significantly inhibited Th17 cell differentiation and reduced IL-17A production and RORγt expression. PMC10616104
Acute myeloid leukemia (AML) cell lines 1.91 mM to 38.67 mM (ED50) 72 hours To study the cytotoxicity of Thiostrepton on leukemic cells, results showed that Thiostrepton exhibited significant cytotoxicity against AML cell lines with ED50 values ranging from 1.91 mM to 38.67 mM. PMC10828769
Yeast strain 6EA1 100 µM To test the inhibitory effect of Thiostrepton on yeast strain 6EA1 expressing bacterial protein L11, results showed that the strain was sensitive to Thiostrepton with an IC50 of approximately 100 μM. PMC2175356
pulmonary fibroblasts 10 µM Inhibition of FOXM1 expression significantly reduced the expression of α-SMA and COL1A1 and impaired the migration ability of pulmonary fibroblasts. PMC11409797

In Vivo:

Species
Animal Model
Administration Dosage Frequency Description References
Mice DSS-induced colitis model Intraperitoneal injection 20 mg/kg Every other day, for 7 days To investigate the therapeutic effect of TST on DSS-induced colitis, results showed that TST significantly alleviated colitis symptoms and controlled colonic inflammation by modulating dysbiosis. PMC10616104
BALB/c Nude mice H1299 and PC9 xenograft model Intraperitoneal injection 17 mg/kg Every 2 days for 9 days Significantly downregulated PD-L1 expression and reduced tumor volume PMC9561767
Mice B16F10 melanoma model Intraperitoneal or subcutaneous injection 150 or 300 mg/kg (intraperitoneal injection), 20 mg/kg (subcutaneous injection) Administered on day 6 and day 12 Thiostrepton significantly suppressed tumor growth and showed additive effects with TA99. Flow cytometry analysis revealed elevated levels of macrophages and monocytes in tumors from mice treated with thiostrepton or thiostrepton plus TA99, with upregulated expression of iNOS and CD86 and downregulated expression of Arg1 in TAMs. PMC7858590
Nude mice CRC xenograft model Intraperitoneal injection 500 mg/kg/day Every three days for 21 days To evaluate the anti-tumor effect of Thiostrepton on CRC xenograft model PMC6988281
C57BL/6 mice MCA205 or TC-1 tumor model Intraperitoneal injection 200 mg/kg Once daily 1 day before, on, and 1 day after chemotherapy, then 40 mg/kg three times per week Thiostrepton enhanced the anticancer activity of oxaliplatin, further diminishing tumor size and extending the survival of the animals PMC7206967
Mice BLM-induced pulmonary fibrosis models intraperitoneal injection 30 mg/kg every other day for 2 weeks Inhibition of FOXM1 expression significantly reduced pulmonary fibrosis, decreased collagen deposition, and lowered the expression of fibrotic markers such as α-SMA and COL1A1. PMC11409797
BALB/c Nude mice Subcutaneous tumour model Intraperitoneal injection 17 mg/kg Three times a week for 3 weeks To evaluate the inhibitory effect of TST on the growth of subcutaneous tumours, the results showed that TST significantly inhibited tumour growth, and Fer-1 reversed this effect. PMC9300693

Protocol

Bio Calculators
Preparing Stock Solutions 1mg 5mg 10mg

1 mM

5 mM

10 mM

0.60mL

0.12mL

0.06mL

3.00mL

0.60mL

0.30mL

6.01mL

1.20mL

0.60mL

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