1. Apoptosis
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  3. HF-125

HF-125 is an orally active, highly selective small-molecule inhibitor of Tribbles 2 (TRIB2). HF-125 promotes the destabilization and degradation of TRIB2 protein via the proteasome pathway. HF-125 downregulates neuroendocrine markers, induces cell cycle arrest and apoptosis, inhibits tumor cell colony formation and invasion, and reverses tumor cell resistance to Enzalutamide (HY-70002). HF-125 significantly inhibits tumor growth in SCID mouse xenograft models, and exerts synergistic inhibitory effects when combined with Enzalutamide. HF-125 can be used in research related to prostate cancer.

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HF-125

HF-125 Chemical Structure

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Description

HF-125 is an orally active, highly selective small-molecule inhibitor of Tribbles 2 (TRIB2). HF-125 promotes the destabilization and degradation of TRIB2 protein via the proteasome pathway. HF-125 downregulates neuroendocrine markers, induces cell cycle arrest and apoptosis, inhibits tumor cell colony formation and invasion, and reverses tumor cell resistance to Enzalutamide (HY-70002). HF-125 significantly inhibits tumor growth in SCID mouse xenograft models, and exerts synergistic inhibitory effects when combined with Enzalutamide. HF-125 can be used in research related to prostate cancer[1].

In Vitro

HF-125 (2-4 μM) induces proteasome-dependent degradation of TRIB2 protein in LN-TRIB2 cells[1].
HF-125 (1-2 μM; 72 h) re-sensitizes LNCaP-ENR, MDA PCa-2b-ENR, LN-TRIB2, and MDA PCa-2b-TRIB2 prostate cancer cells to Enzalutamide (HY-70002)[1].
HF-125 (1 μM; 24 h) enhances Enzalutamide-induced DNA fragmentation and cell death in LNCaP-ENR and MDA PCa-2b-ENR prostate cancer cells[1].
HF-125 (2-8 μM; 72 h) reduces cell viability in LN-Trio2, LN-Trib2, NCI-H660, NCI-H660-01, LASCPC-01, and TRAMP-C1 NEPC cell lines in a dose-dependent manner[1].
HF-125 (2-6 μM; 48 h) downregulates TRIB2 and neuroendocrine marker proteins (N-Myc, EZH2, ASCL1, CGA, ENO2, SYP) while upregulating AR and PSA in LN-TRIB2 cells[1].
HF-125 (2-6 μM; 24 h) induces dose-dependent apoptosis in LN-TRIB2 cells[1].
HF-125 (2-4 μM; 24 h) induces G2M phase cell cycle arrest in LN-TRIB2 cells[1].
HF-125 (2-6 μM; 14 days) reduces the clonogenic potential of LN-TRIB2 cells in a dose-dependent manner[1].
HF-125 (2-6 μM; 16 h) reduces the invasive capacity of LN-TRIB2 cells in a dose-dependent manner[1].
HF-125 (1 μM; 72 h) synergizes with 10 μM enzalutamide to reduce cell viability in LNCaP and MDA PCa-2b prostate cancer cells[1].
HF-125 (1 μM; 16 h) synergizes with 10 μM enzalutamide to inhibit invasion in LNCaP and MDA PCa-2b prostate cancer cells after 16 hours of co-treatment[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Viability Assay[1]

Cell Line: LNCaP-ENR, MDA PCa-2b-ENR, LN-TRIB2, MDA PCa-2b-TRIB2 prostate cancer cells
Concentration: 1, 2 μM (combined with 10, 20, 30 μM enzalutamide)
Incubation Time: 72 h
Result: Re-sensitized LNCaP-ENR, MDA PCa-2b-ENR, LN-TRIB2, and MDA PCa-2b-TRIB2 cells to enzalutamide, reducing cell viability significantly compared to enzalutamide treatment alone.

ELISA Assay[1]

Cell Line: LNCaP-ENR, MDA PCa-2b-ENR prostate cancer cells
Concentration: 1 μM (combined with 10-20 μM enzalutamide)
Incubation Time: 24 h
Result: Increased DNA fragmentation in LNCaP-ENR and MDA PCa-2b-ENR cells, indicating enhanced cell death.

Cell Viability Assay[1]

Cell Line: LN-Trio2, LN-Trib2, NCI-H660, NCI-H660-01, LASCPC-01, TRAMP-C1 NEPC cell lines
Concentration: 2, 4, 6, 8 μM
Incubation Time: 72 h
Result: Reduced cell viability in all tested NEPC cell lines in a dose-dependent manner.

Western Blot Analysis[1]

Cell Line: LN-TRIB2 cells
Concentration: 2, 4, 6 μM
Incubation Time: 48 h
Result: Downregulated TRIB2, N-Myc, EZH2, ASCL1, CGA, ENO2, and SYP protein levels in a dose-dependent manner, while upregulating AR and PSA protein levels.
At 2 μM, reduced TRIB2, N-Myc, ASCL1, and SYP levels similarly to TRIB2-shRNA knockdown.

Apoptosis Analysis[1]

Cell Line: LN-TRIB2 cells
Concentration: 2, 4, 6 μM
Incubation Time: 24 h
Result: Induced apoptosis in a dose-dependent manner, with early apoptotic cells increasing from 1.2% to 7.4% (2 μM), 9.3% (4 μM), and 31.1% (6 μM), and late apoptotic cells increasing from 1.4% to 24.0% (2 μM), 24.9% (4 μM), and 15.6% (6 μM).
Total apoptotic cells reached 37.0% at 6 μM.

Cell Cycle Analysis[1]

Cell Line: LN-TRIB2 cells
Concentration: 2, 4 μM
Incubation Time: 24 h
Result: Induced cell cycle arrest at the G2M phase, with G2M population increasing from 12.9% to 19.1% (2 μM) and 12.4% (4 μM), while S phase population decreased from 24.3% to 18.7% (2 μM) and 8.4% (4 μM).

Cell Invasion Assay[1]

Cell Line: LN-TRIB2 cells
Concentration: 2, 4, 6 μM
Incubation Time: 16 h
Result: Reduced cell invasion in a dose-dependent manner.

Cell Proliferation Assay[1]

Cell Line: LN-TRIB2 cells
Concentration: 2, 4, 6 μM
Incubation Time: 14 days
Result: Reduced the clonogenic potential of LN-TRIB2 cells in a dose-dependent manner.

Cell Viability Assay[1]

Cell Line: LNCaP and MDA PCa-2b prostate cancer cells
Concentration: 1 μM (combined with 10 μM enzalutamide)
Incubation Time: 72 h
Result: Synergized with 10 μM enzalutamide to reduce cell viability in both LNCaP and MDA PCa-2b cells.
Combination index (CI) values were <1, and ZIP synergy scores were positive (17.55 for LNCaP, 15.84 for MDA PCa-2b).

Cell Invasion Assay[1]

Cell Line: LNCaP and MDA PCa-2b prostate cancer cells
Concentration: 1 μM (combined with 10 μM enzalutamide)
Incubation Time: 16 h
Result: Synergized with 10 μM enzalutamide to decrease cell invasion in LNCaP cells, with mean invaded cells per field decreasing from ~150 to ~70 (combined treatment).
In Vivo

HF-125 (40 mg/kg; p.o.; daily; 28 days) strongly inhibits enzalutamide-resistant neuroendocrine prostate cancer tumor growth in SCID SHO mice, with significant downregulation of TRIB2 and associated neuroendocrine and proliferation markers, and no overt toxicity[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: SCID SHO (6-week-old male)[1]
Dosage: 40 mg/kg
Administration: p.o.; daily; 28 days
Result: Strongly inhibited ERPC-NE tumor growth, with tumor volumes significantly lower than vehicle controls across all 4 weeks of treatment.
Downregulated protein levels of TRIB2, N-Myc, EZH2, ASCL1, and Ki-67 in tumor tissue compared to vehicle controls.
Caused no overt toxicity to general animal health.
Molecular Weight

572.00

Formula

C24H25ClF3N5O4S

SMILES

CS(C1=C(NC2=NC(NC3=CC=C(C4CCNCC4)C=C3)=NC=C2Cl)C=CC=C1)(=O)=O.O=C(O)C(F)(F)F

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Room temperature in continental US; may vary elsewhere.

Storage

Please store the product under the recommended conditions in the Certificate of Analysis.

Purity & Documentation
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    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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HF-125
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HY-184178A
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