1. Apoptosis NF-κB Immunology/Inflammation JAK/STAT Signaling Stem Cell/Wnt PI3K/Akt/mTOR MAPK/ERK Pathway Metabolic Enzyme/Protease Autophagy
  2. Apoptosis NF-κB NOD-like Receptor (NLR) STAT PI3K Akt Hedgehog GSK-3 p38 MAPK ERK JNK Keap1-Nrf2 Reactive Oxygen Species (ROS) Autophagy
  3. Physalin B

Physalin B is an orally active anti-inflammatory and anticancer agent. Physalin B can be isolated from Physalis alkekengi L. var. Franchetii. Physalin B inhibits the activation of the NF-κB, NLRP3 inflammasome, STAT3, PI3K/Akt and Hedgehog signaling pathways, regulates the phosphorylation levels of GSK-3β, p38 MAPK, ERK1/2 and JNK, and promotes the nuclear translocation of NRF2. Physalin B reduces the levels of pro-inflammatory cytokines and factors, induces mitochondrial reactive oxygen species (mito-ROS) production, Apoptosis, G2/M cell cycle arrest and incomplete Autophagy, alters cytoskeleton structure and alleviates oxidative stress. Physalin B reduces cancer cell viability, ameliorates liver and lung tissue damage and alleviates liver fibrosis. Physalin B can be used in research related to ulcerative colitis, breast cancer, acute lung injury, colon cancer, non-alcoholic steatohepatitis, liver fibrosis, lung cancer, pancreatic cancer, lymphoma, ovarian cancer, sarcoma and leukemia.

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Physalin B

Physalin B Chemical Structure

CAS No. : 23133-56-4

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Description

Physalin B is an orally active anti-inflammatory and anticancer agent. Physalin B can be isolated from Physalis alkekengi L. var. Franchetii. Physalin B inhibits the activation of the NF-κB, NLRP3 inflammasome, STAT3, PI3K/Akt and Hedgehog signaling pathways, regulates the phosphorylation levels of GSK-3β, p38 MAPK, ERK1/2 and JNK, and promotes the nuclear translocation of NRF2. Physalin B reduces the levels of pro-inflammatory cytokines and factors, induces mitochondrial reactive oxygen species (mito-ROS) production, Apoptosis, G2/M cell cycle arrest and incomplete Autophagy, alters cytoskeleton structure and alleviates oxidative stress. Physalin B reduces cancer cell viability, ameliorates liver and lung tissue damage and alleviates liver fibrosis. Physalin B can be used in research related to ulcerative colitis, breast cancer, acute lung injury, colon cancer, non-alcoholic steatohepatitis, liver fibrosis, lung cancer, pancreatic cancer, lymphoma, ovarian cancer, sarcoma and leukemia[1][2][3][4][5][6][7].

IC50 & Target[1]

NLRP3 inflammasome

 

GSK-3β

 

STAT3

 

ERK1

 

ERK2

 

Cellular Effect
Cell Line Type Value Description References
A-431 EC50
1.8 μg/mL
Compound: 9
Antitumor activity against human A431 cells
Antitumor activity against human A431 cells
[PMID: 17580910]
A549 EC50
5.9 μg/mL
Compound: 9
Antitumor activity against human A549 cells
Antitumor activity against human A549 cells
[PMID: 17580910]
A549 IC50
11.9 μM
Compound: 18
Antiproliferative activity against human A549 cells assessed as reduction in cell viability incubated for 48 hrs by CCK8 assay
Antiproliferative activity against human A549 cells assessed as reduction in cell viability incubated for 48 hrs by CCK8 assay
[PMID: 35608269]
HCT-8 EC50
1.5 μg/mL
Compound: 9
Antitumor activity against human HCT8 cells
Antitumor activity against human HCT8 cells
[PMID: 17580910]
HeLa IC50
2 μM
Compound: 1
Cytotoxicity against human HeLa cells after 72 hrs by MTT assay
Cytotoxicity against human HeLa cells after 72 hrs by MTT assay
[PMID: 16562828]
HeLa IC50
37.5 μM
Compound: PB-1
Inhibition of TNFalpha-induced IkappaBalpha (unknown origin) phosphorylation expressed in human HeLa cells pretreated 30 mins before TNFalpha addition measured up to 120 mins by ELISA in presence of proteasome inhibitor MG-132
Inhibition of TNFalpha-induced IkappaBalpha (unknown origin) phosphorylation expressed in human HeLa cells pretreated 30 mins before TNFalpha addition measured up to 120 mins by ELISA in presence of proteasome inhibitor MG-132
[PMID: 24900739]
HeLa IC50
6.07 μM
Compound: PB-1
Inhibition of TNFalpha-induced NF-kappaB activation (unknown origin) expressed in human HeLa cells pretreated 30 mins before TNFalpha addition after 7 hrs by luciferase reporter gene assay
Inhibition of TNFalpha-induced NF-kappaB activation (unknown origin) expressed in human HeLa cells pretreated 30 mins before TNFalpha addition after 7 hrs by luciferase reporter gene assay
[PMID: 24900739]
HepG2 IC50
11.7 μM
Compound: 18
Antiproliferative activity against human HepG2 cells assessed as reduction in cell viability incubated for 48 hrs by CCK8 assay
Antiproliferative activity against human HepG2 cells assessed as reduction in cell viability incubated for 48 hrs by CCK8 assay
[PMID: 35608269]
KB EC50
3 μg/mL
Compound: 9
Antitumor activity against human KB cells
Antitumor activity against human KB cells
[PMID: 17580910]
LNCaP EC50
5.3 μg/mL
Compound: 9
Antitumor activity against human LNCAP cells
Antitumor activity against human LNCAP cells
[PMID: 17580910]
MCF7 IC50
1 μM
Compound: 6
Cytotoxicity against human MCF7 cells assessed as cell growth inhibition measured after 24 to 72 hrs by MTT assay
Cytotoxicity against human MCF7 cells assessed as cell growth inhibition measured after 24 to 72 hrs by MTT assay
[PMID: 33586438]
MCF7 IC50
11.2 μM
Compound: 18
Antiproliferative activity against human MCF7 cells assessed as reduction in cell viability incubated for 48 hrs by CCK8 assay
Antiproliferative activity against human MCF7 cells assessed as reduction in cell viability incubated for 48 hrs by CCK8 assay
[PMID: 35608269]
NCI-H460 IC50
0.9 μM
Compound: 6
Cytotoxicity against human NCI-H460 cells assessed as cell growth inhibition measured after 24 to 72 hrs by MTT assay
Cytotoxicity against human NCI-H460 cells assessed as cell growth inhibition measured after 24 to 72 hrs by MTT assay
[PMID: 33586438]
PANC-1 IC50
0.62 μM
Compound: 136
Inhibition of Gli1-mediated transcription expressed in human PANC1 cells
Inhibition of Gli1-mediated transcription expressed in human PANC1 cells
[PMID: 19309080]
PC-3 EC50
0.9 μg/mL
Compound: 9
Antitumor activity against human PC3 cells
Antitumor activity against human PC3 cells
[PMID: 17580910]
PC-3 IC50
1 μM
Compound: 6
Cytotoxicity against human PC-3 cells assessed as cell growth inhibition measured after 24 to 72 hrs by MTT assay
Cytotoxicity against human PC-3 cells assessed as cell growth inhibition measured after 24 to 72 hrs by MTT assay
[PMID: 33586438]
RAW264.7 IC50
0.84 μM
Compound: 9
Inhibition of LPS-induced nitric oxide production in mouse RAW264.7 cells assessed as nitrite formation
Inhibition of LPS-induced nitric oxide production in mouse RAW264.7 cells assessed as nitrite formation
[PMID: 18348534]
SF-268 IC50
0.6 μM
Compound: 6
Cytotoxicity against human SF-268 cells assessed as cell growth inhibition measured after 24 to 72 hrs by MTT assay
Cytotoxicity against human SF-268 cells assessed as cell growth inhibition measured after 24 to 72 hrs by MTT assay
[PMID: 33586438]
SGC-7901 IC50
12.1 μM
Compound: 18
Antiproliferative activity against human SGC-7901 cells assessed as reduction in cell viability incubated for 48 hrs by CCK8 assay
Antiproliferative activity against human SGC-7901 cells assessed as reduction in cell viability incubated for 48 hrs by CCK8 assay
[PMID: 35608269]
WI-38 IC50
3.3 μM
Compound: 6
Cytotoxicity against human WI-38 cells assessed as cell growth inhibition measured after 24 to 72 hrs by MTT assay
Cytotoxicity against human WI-38 cells assessed as cell growth inhibition measured after 24 to 72 hrs by MTT assay
[PMID: 33586438]
ZR-75-1 EC50
2.6 μg/mL
Compound: 9
Antitumor activity against human ZR751 cells
Antitumor activity against human ZR751 cells
[PMID: 17580910]
In Vitro

Physalin B (0.25-16.0 µM; 24 h) is non-cytotoxic to RAW 264.7 cells at concentrations up to 1.0 µM after 24 h, but induces significant concentration-dependent cytotoxicity at concentrations ≥2.0 µM[1].
Physalin B (0.25-1.0 µM; 2 h pre-incubation, followed by 24 h co-incubation with 1 µg/mL LPS) significantly inhibits LPS-induced production of TNF-α, IL-6, and IL-1β in RAW 264.7 cells[1].
Physalin B (0.63-40 μM; 12-72 h) reduces the viability of MCF-7, MDA-MB-231, and T-47D human breast cancer cells in a concentration- and time-dependent manner, with near-complete cell death at 40 μM after 24 h[2].
Physalin B (2.5-10 μM; 48 h) increases the apoptotic rate of MCF-7 human breast cancer cells to 16.4%, 21.6%, and 35.4% at concentrations of 2.5 μM, 5 μM, and 10 μM for 48 h, respectively[2].
Physalin B (0.31-10 μmol/L; 72 h) potently inhibits the viability of human HCT116 colon cancer cells with an IC50 of 1.35 μmol/L[4].
Physalin B (2.5-10 μmol/L; 12-36 h) induces apoptosis in human HCT116 colon cancer cells by promoting pyknosis, apoptotic body formation, and cleavage of PARP and caspase-3 at concentrations of 2.5, 5, and 10 μmol/L over 12-36 h[4].
Physalin B (0.25-40 μM; 48 h) does not affect the viability of L02 human hepatocytes[5].
Physalin B (0.25-1 μM; 48 h) dose-dependently reduces lipid accumulation in FFA-induced L02 human hepatocytes[5].
Physalin B (0.25-1 μM; 48 h) dose-dependently reduces intracellular ROS levels in FFA-induced L02 human hepatocytes[5].
Physalin B (2.5-5 μM; 30 min preincubation, followed by 6 h TNFα stimulation) inhibits TNFα-induced NF-κB activation in 293T-NF-κB human cells, with maximal 85% inhibition observed at 5 μM[6].
Physalin B (24 h) reduces LX-2 cell viability with an IC50 of approximately 5 μM[7].

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

Cell Viability Assay[1]

Cell Line: mouse monocyte-macrophage RAW 264.7 cells
Concentration: 0.25-16.0 µM
Incubation Time: 24 h
Result: Showed no cytotoxicity (cell viability unchanged relative to control) at concentrations of 0.25, 0.5, and 1.0 µM after 24 h.
Reduced cell viability to 88.50% at 2.0 µM.
Increased cytotoxicity significantly with higher concentrations (4.0, 8.0, 16.0 µM), leading to progressively lower cell survival rates.

ELISA Assay[1]

Cell Line: LPS-stimulated mouse monocyte-macrophage RAW 264.7 cells
Concentration: 0.25-1.0 µM
Incubation Time: 2 h pre-incubation, followed by 24 h co-incubation with 1 µg/mL LPS
Result: Significantly inhibited the LPS-induced release of TNF-α, IL-6, and IL-1β at all tested concentrations, with statistically significant reductions (P < 0.01 to P < 0.001) relative to the LPS-only model group.

Cell Viability Assay[2]

Cell Line: MCF-7, MDA-MB-231, T-47D
Concentration: 0.63-40 μM
Incubation Time: 12 h, 24 h, 48 h, 72 h
Result: Caused less than 20% cell death across all three cell lines at concentrations below 2.5 μM even after 72 h.
Reduced cell viability in a concentration- and time-dependent manner at 2.5-40 μM.
Reduced MCF-7 cell viabilities to 71.8% (12 h), 52.0% (24 h), 43.0% (48 h), 31.8% (72 h) at 20 μM.
Reduced MDA-MB-231 cell viabilities to 78.7% (12 h), 36.2% (24 h), 28.0% (48 h), 33.2% (72 h) at 20 μM.
Reduced T-47D cell viabilities to 85.3% (12 h), 29.9% (24 h), 16.5% (48 h), 10.3% (72 h) at 20 μM.
Nearly completely killed all three cell lines at 40 μM after 24 h or longer incubation.

Apoptosis Analysis[2]

Cell Line: MCF-7
Concentration: 2.5-10 μM
Incubation Time: 48 h
Result: Increased the apoptotic rate of MCF-7 cells in a concentration-dependent manner: from baseline to 16.4% (2.5 μM), 21.6% (5 μM), and 35.4% (10 μM).

Apoptosis Analysis[4]

Cell Line: human HCT116 colon cancer cells
Concentration: 2.5-10 μmol/L (nuclear staining: 5-10 μmol/L; Western blot: 2.5-10 μmol/L)
Incubation Time: 12-36 h (nuclear staining: 24 h; Western blot: 12-36 h)
Result: Induced pyknosis and apoptotic body formation at 5 and 10 μmol/L after 24 h.
Dose- and time-dependently induced cleavage of PARP and caspase-3, with detectable cleavage starting at 12 h for 10 μmol/L, and increasing at 24 and 36 h across all tested concentrations.
In Vivo

Physalin B (10-20 mg/kg; i.p.) significantly alleviates acute ulcerative colitis in DSS-induced BALB/c mice by improving clinical symptoms, reducing colon damage, restoring immune organ function, and suppressing multiple inflammatory signaling pathways (NF-κB, STAT3, β-arrestin1, NLRP3 inflammasome)[1].
Physalin B (15 mg/kg; i.g.; daily; 7 days) protects against LPS-induced acute lung injury in mice by activating the PI3K/Akt pathway to inhibit NF-κB and NLRP3 signaling, reduce inflammatory cytokine production, and suppress lung tissue apoptosis[3].
Physalin B (3.25-600 mg/kg; p.o.; daily; 2-4 weeks) dose-dependently ameliorates MCD-induced NASH in male C57BL/6J mice by activating autophagy and the P62-KEAP1-NRF2 antioxidative pathway, with the 30 mg/kg dose yielding the strongest reductions in liver injury, lipid accumulation, inflammation, and oxidative stress, and no observed toxicity at doses up to 600 mg/kg[5].
Physalin B (1-5 mg·kg−1; i.p.; every other day; 4 weeks) attenuates CCl4 (HY-Y0298)-induced liver fibrosis in male C57BL/6J mice, reducing collagen deposition, liver injury markers, and fibrogenic gene expression[7].
Physalin B (1-5 mg·kg−1; i.p.; every other day; 14 days) ameliorates BDL-induced liver injury and fibrosis in male C57BL/6J mice, reducing pathological damage, collagen deposition, and fibrogenic marker expression[7].

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

Animal Model: BALB/c (male, 20 g)[1]
Dosage: 10 mg/kg; 20 mg/kg
Administration: i.p.
Result: Significantly reversed DSS-induced colon shortening, with the 20 mg/kg dose showing greater efficacy than positive control SASP.
Significantly prevented body weight loss in DSS-treated mice by day 7.
Significantly reduced the DAI scores of DSS-treated mice, indicating improved disease symptoms.
Significantly alleviated DSS-induced colonic pathological damage (including epithelial erosion, crypt loss, and immune cell infiltration) and reduced histological scores, with the 20 mg/kg dose showing stronger efficacy than SASP.
Significantly inhibited elevated colonic MPO activity in DSS-treated mice, reducing inflammatory cell infiltration.
Significantly reversed DSS-induced splenomegaly (reduced spleen coefficient) and thymus atrophy (increased thymus coefficient), restoring immune organ function.
Significantly reduced elevated colonic levels of pro-inflammatory cytokines TNF-α, IL-6, and IL-1β in DSS-treated mice, with the 20 mg/kg dose showing stronger efficacy than SASP.
Significantly suppressed DSS-induced activation of the NF-κB pathway, as measured by reduced phosphorylation of NF-κB p65 and IκBα.
Significantly suppressed DSS-induced activation of the STAT3 pathway, as measured by reduced phosphorylation of STAT3.
Significantly reduced DSS-induced upregulation of β-arrestin1 protein levels in colon tissue.
Significantly suppressed DSS-induced activation of the NLRP3 inflammasome, as measured by reduced protein levels of NLRP3, ASC, and IL-1β.
Animal Model: BALB/c (male, 10-12 weeks old, 20-22 g, LPS-induced septic ALI)[3]
Dosage: 15 mg/kg
Administration: i.g.; daily; 7 days
Result: Significantly reduced LPS-induced inflammatory cell infiltration in lung tissue.
Decreased lung wet/dry weight ratios and myeloperoxidase activity in lung tissue, blood, and bronchoalveolar lavage fluid.
Mitigated LPS-induced alterations in arterial blood gas parameters (pH, HCO3-, Hgb, PCO2, PO2, BE).
Reversed LPS-induced downregulation of anti-apoptotic protein Bcl-2 and upregulation of pro-apoptotic protein Bax.
Reduced LPS-increased caspase-3 and caspase-9 activity in lung tissue.
Significantly attenuated LPS-induced increases in total inflammatory cells, neutrophils, macrophages, and lymphocytes in blood and bronchoalveolar lavage fluid.
Decreased LPS-elevated protein levels of TNF-α, IL-1β, and IL-6 in blood, bronchoalveolar lavage fluid, and lung tissue, as well as their mRNA levels in lung tissue.
Blocked LPS-induced phosphorylation of NF-κB (p65) and IκBα in lung tissue.
Inhibited LPS-upregulated NLRP3, ASC, and IL-1β protein levels and caspase-1 activity, while increasing pro-IL-1β protein levels in lung tissue.
Reversed LPS-induced downregulation of phosphorylated PI3K/Akt in lung tissue.
Had protective effects abolished by co-administration of PI3K inhibitor LY294002, including restored NF-κB and NLRP3 activation and increased inflammatory cell influx in lung tissue.
Animal Model: C57BL/6J (male, 5 weeks old, 20-22 g, NASH induced by MCD diet for 4 weeks)[5]
Dosage: 3.25 mg/kg; 7.5 mg/kg; 15 mg/kg; 30 mg/kg; 300 mg/kg; 600 mg/kg
Administration: p.o.; daily; 4 weeks (for 3.25-30 mg/kg); p.o.; daily; 2 weeks (for 300-600 mg/kg)
Result: Reversed MCD-induced decreases in body weight and significantly reduced the liver-to-body weight ratio at 30 mg/kg dose compared to the MCD model group.
Reduced serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels in a dose-dependent manner, with the 30 mg/kg dose showing the strongest reduction.
Decreased hepatic total triglyceride (TG) and total cholesterol (TC) levels in a dose-dependent manner.
Improved liver injury, hepatocyte ballooning, and inflammatory cell infiltration in a dose-dependent manner; significantly reduced the NAFLD Activity Score (NAS) across all doses.
Significantly decreased hepatic mRNA expression of inflammatory cytokines Il-6, Il-1β, and Tnf-α in a dose-dependent manner, and reduced F4/80 mRNA levels.
Reduced hepatic lipid accumulation in a dose-dependent manner, with the 30 mg/kg dose nearly eliminating large lipid droplets.
Increased hepatic LC3-II protein levels and the LC3-II/LC3-I ratio in a dose-dependent manner.
Increased hepatic NRF2 and P62 protein expression in a dose-dependent manner, and upregulated hepatic mRNA expression of NRF2 target genes Nqo-1 and Ho-1 in a dose-dependent manner.
Showed no abnormal clinical signs or pathological changes in heart, liver, spleen, or kidney tissues at 300 mg/kg and 600 mg/kg oral doses for 2 weeks.
Animal Model: C57BL/6J (male, 5 weeks old, 18-20 g, specific-pathogen-free, liver fibrosis induced by CCl4 injection)[7]
Dosage: 1 mg·kg-1; 2.5 mg·kg-1; 5 mg·kg-1
Administration: i.p.; every other day; 4 weeks
Result: Ameliorated CCl4-induced hepatic inflammatory cell infiltration, central venous wall thickening, and fibrous hyperplasia.
Reduced Sirius Red and Masson's trichrome-stained collagen deposition, fibroplasia, and bridging fibrosis.
Decreased elevated serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels.
Lowered hepatic hydroxyproline content.
Significantly reduced mRNA expression of fibrogenic genes (α-sma, Col1a1, Tgfβ1, Timp1) as well as protein levels of α-SMA and COL1A1 in liver tissues.
Animal Model: C57BL/6J (male, 5 weeks old, 18-20 g, specific-pathogen-free, liver fibrosis induced by bile duct ligation surgery)[7]
Dosage: 1 mg·kg-1; 2.5 mg·kg-1; 5 mg·kg-1
Administration: i.p.; every other day; 14 days
Result: Ameliorated BDL-induced liver parenchyma necrosis.
Reduced newly formed bile ducts (assessed by CK19 staining).
Decreased Sirius Red and Masson's trichrome-stained collagen deposition.
Lowered liver-to-body weight ratio and elevated serum biochemical markers (including alkaline phosphatase (AKP), γ-glutamyl transpeptidase (γ-GT), total bile acid (TBA), total bilirubin (TBiL)).
Reduced hepatic hydroxyproline content.
Significantly decreased mRNA and protein levels of fibrogenic markers in liver tissues.
Molecular Weight

510.53

Formula

C28H30O9

CAS No.
Appearance

Solid

Color

Off-white to light yellow

SMILES

C[C@@]([C@H](OC1=O)C2)(OC3=O)[C@](O[C@@]45C6=O)([C@@]3(CC[C@@]7([H])[C@@]4([H])CC=C(CC=C8)[C@@]7(C8=O)C)O)[C@]6([H])[C@]2([C@@]1([H])CO5)C

Structure Classification
Initial Source
Shipping

Room temperature in continental US; may vary elsewhere.

Storage

4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Purity & Documentation

Purity: 97.20%

References
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Physalin B
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HY-N7695
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