chondrocytes

Kartogenin (KGN) is an activator of the smad4/smad5 pathway, and promotes the selective differentiation of multipotent mesenchymal stem cells into chondrocytes.

Indirubin-3′-oxime is an effective inhibitor of cyclin-dependent protein kinases, and may play an obligate role in neuronal apoptosis in Alzheimer's disease.

BNTA is a potent extracellular matrix (ECM) modulator. In a rat model of arthritis, BNTA modulates arthritis by promoting the synthesis of cartilage structural molecules on chondrocytes through the induction of superoxide dismutase 3 (SOD3) and regulating chondrogenesis through superoxide anion elimination.

Glucosamine (Chitosamine) is a natural product. Glucosamine is used as a dietary supplement. Glucosamine has pharmacological effects on cartilage and chondrocytes in osteoarthritis when used externally. Glucosamine regulates sugar metabolism. Glucosamine reduces the activity of glucoskinase in pancreatic islet homogenate.

Amygdalin (Laetrile) has antifibrotic, antitumor, anti-inflammatory and analgesic effects, amygdalin joint HSYA could inhibit the degeneration of the endplate chondrocytes derived from intervertebral discs of rats induced by IL-1beta and better than the single use of Amygdalin or HSYA. Amygdalin induces apoptotic cell death in human DU145 and LNCaP prostate cancer cells by caspase-3 activation through down-regulation of Bcl-2 and up-regulation of Bax.

DNJNAc, also known as 2-Acetamido-1,2-dideoxynojirimycin, is a highly potent and specific inhibitor of β-hexosaminidase (HEX). HEX enzymes catalyze the hydrolysis of terminal non-reducing N-acetyl-β-D-glucosamine (GlcNAc) and N-acetyl-β-D-galactosamine (GalNAc) residues from glycoconjugates such as glycoproteins, gangliosides, and glycosaminoglycans. HEX secreted by chondrocytes into the extracellular space contributes to cartilage matrix degradation, and HEX activity is elevated in the synovial fluid of osteoarthritis patients.

Derazantinib Racemate (ARQ-087 Racemate) is the racemate of Derazantinib, an orally bioavailable, ATP-competitive tyrosine kinase inhibitor with potent activity against FGFR1/FGFR2/FGFR3 chondrocytes (IC50s: 4.5 nM/1.8 nM/4.5 nM).

Caspase-3/7 inhibitor I is a potent and reversible inhibitor of caspase-3 and caspase-7, with Ki values of 60 and 170 nM, respectively. It effectively inhibits apoptosis in Jurkat cells and chondrocytes treated with Camptothecin.

ADAMTS-5-IN-4 (Compound 4b) is a selective inhibitor of ADAMTS5 with an IC₅₀ of 9.4 μM. It significantly hinders Aggrecan degradation in explant models of osteoarthritis and effectively suppresses pseudopodia extension and directional migration in ovarian cancer cells. ADAMTS-5-IN-4 also exhibits significant cytotoxicity towards HEK293T cells, human chondrocytes, and porcine cartilage explants. This compound is applicable in research related to osteoarthritis and ovarian cancer.

Polygalacic acid (Virgaureagenin G) is a triterpenoid isolated from the root of Polygala tenuifolia Willd that inhibits MMP expression. Polygalacic acid (Virgaureagenin G) can significantly improve the responsiveness of the cholinergic system, such as decreased acetylcholinesterase (AChE) activity, increased choline acetyltransferase (ChAT) activity, and increased acetylcholine (ACh) levels in the hippocampus and frontal cortex. Polygalacic acid (Virgaureagenin G) can also inhibit IL-1β-induced Wnt/β-catenin activation and mitogen-activated protein kinase (MAPK) signaling pathways in chondrocytes, and is used in osteoarthritis (OA) related research.

RAD16-I hydrochloride is a self-assembling peptide with nanofibrous morphology that provides an optimal microenvironment for the proliferation and differentiation of human mesenchymal stem cells (hMSC) into chondrocytes. This peptide, known as RAD16-I, has been extensively studied and serves as a model to assess the amyloid-like staining properties of self-assembling peptide nanofibers (SAPNFs).

1. Monotropein (Monotropeine) has antinociceptive action. 2. Monotropein has anti-apoptosis and anti-catabolic activity in chondrocytes. 3. Monotropein has anti-inflammatory action by inhibition of the expressions of inflammatory mediators via NF-κB inactivation, and support its possible therapeutic role in colitis. 4. Monotrope ininhibit the expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) mRNA in LPS-induced RAW 264.7 macrophages.

Vosoritide acetate is a peptide drug designed based on a C-type natriuretic peptide analog. Vosoritide acetate promotes cGMP production by activating the natriuretic peptide receptor-B while antagonizing the inhibitory effects of the FGFR3 signaling pathway on bone growth. Vosoritide acetate is currently used to treat growth disorders such as achondroplasia.

TIP39, a neuropeptide and an agonist for the parathyroid hormone receptor type 2 (PTH2R), effectively increases cAMP levels in COS-7 cells featuring recombinant PTH2R from humans or rats (EC50s = 0.5 and 0.8 nM, respectively), as well as in F-11 cells that naturally express PTH2R (EC50 = 1.15 nM). Furthermore, TIP39 at 1 nM halts the cell cycle at the G0/G1 phase and reduces Sox9 expression, a crucial regulator of cartilage differentiation, in CFK2 rat chondrocytes. Additionally, administering 100 pmol/animal of TIP39 reduces the immobility period in the forced swim test in mice, indicating a potential antidepressant effect.

Amygdalin (Standard) is a reference standard for research and analysis in studies involving Amygdalin. Amygdalin (Laetrile) has antifibrotic, antitumor, anti-inflammatory and analgesic effects, amygdalin joint HSYA could inhibit the degeneration of the endplate chondrocytes derived from intervertebral discs of rats induced by IL-1beta and better than the single use of Amygdalin or HSYA. Amygdalin induces apoptotic cell death in human DU145 and LNCaP prostate cancer cells by caspase-3 activation through down-regulation of Bcl-2 and up-regulation of Bax.

Monotropein (Standard) is a reference standard for research and analysis in studies involving Monotropein. 1. Monotropein (Monotropeine) has antinociceptive action. 2. Monotropein has anti-apoptosis and anti-catabolic activity in chondrocytes. 3. Monotropein has anti-inflammatory action by inhibition of the expressions of inflammatory mediators via NF-κB inactivation, and support its possible therapeutic role in colitis. 4. Monotrope ininhibit the expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) mRNA in LPS-induced RAW 264.7 macrophages.

Polygalacic acid (Standard) is a reference standard for research and analysis in studies involving Polygalacic acid. Polygalacic acid (Virgaureagenin G) is a triterpenoid isolated from the root of Polygala tenuifolia Willd that inhibits MMP expression. Polygalacic acid (Virgaureagenin G) can significantly improve the responsiveness of the cholinergic system, such as decreased acetylcholinesterase (AChE) activity, increased choline acetyltransferase (ChAT) activity, and increased acetylcholine (ACh) levels in the hippocampus and frontal cortex. Polygalacic acid (Virgaureagenin G) can also inhibit IL-1β-induced Wnt/β-catenin activation and mitogen-activated protein kinase (MAPK) signaling pathways in chondrocytes, and is used in osteoarthritis (OA) related research.

Tricetin is a flavonoid isolated from pomegranate.Tricetin is a potent competitive inhibitor of Keap1-Nrf2 protein-protein interaction (PPI) and protects Parkinson's disease patients from 6-OHDA-induced neurotoxicity by activating the Nrf2/HO-1 signaling pathway and blocking mitochondria-dependent apoptotic pathways.Tricetin Inhibits migration and expression of the indicator protease progerin-1 (PS-1) in nasopharyngeal carcinoma through the Akt/GSK-1β pathway.Tricetin inhibits endothelial inflammation induced by oxidized LDL mediated by Egr-1, and protects rat chondrocytes from IL-1β-induced inflammation and apoptosis.Tricetin is an inhibitor of endothelial inflammation induced by oxidized LDL mediated by Egr-1 and protects against IL-1β-induced inflammation and apoptosis.

SAP15 (Synthetic anti-inflammatory peptide 15) is a synthetic peptide composed of 15 amino acids, derived from human beta-defensin 3, with the ability to penetrate cells and mitigate intracellular inflammation. It achieves its anti-inflammatory effects by blocking the phosphorylation of HDAC5, which in turn reduces NF-κB p65 phosphorylation. In macrophages stimulated with LPS, SAP15 suppresses the phosphorylation of both HDAC5 and NF-κB p65, demonstrating potent anti-inflammatory actions. Furthermore, treatment with SAP15 in LPS-induced chondrocytes elevates aggrecan and type II collagen levels while reducing osteocalcin expression. This peptide is valuable for exploring inflammation regulation and the development of anti-inflammatory therapies in biomaterials.

BMP-4, a heparin-binding peptide, exhibits anti-inflammatory and anti-chondrogenic properties. In murine chondrocytes and macrophages, it effectively mitigates inflammation and alleviates symptoms of various arthritides by dose-dependently suppressing the expression of inflammatory proteins such as iNOS, COX2, IFN, and IL6 through modulation of the iNOS-IFN-IL6 signaling pathway.

BMP-4 acetate is a heparin-binding peptide with anti-inflammatory and anti-chondrogenic properties. In mouse chondrocytes and macrophages, it effectively suppresses inflammation and alleviates various arthritis symptoms by regulating the iNOS-IFN-IL6 signaling pathway, thereby inhibiting the expression of inflammatory proteins such as iNOS, COX2, IFN, and IL6.

SAP15 (Synthetic anti-inflammatory peptide 15) acetate is a synthetic anti-inflammatory peptide composed of 15 amino acids, designed from human β-defensin 3. It can penetrate cells and downregulate intracellular inflammation by inhibiting the phosphorylation of HDAC5, thereby reducing the phosphorylation of NF-κBp65, which in turn suppresses inflammatory responses. Additionally, SAP15 acetate inhibits the phosphorylation of HDAC5 and NF-κBp65 in LPS-induced macrophages. Treatment with SAP15 acetate enhances the expression of aggrecan and type II collagen while reducing osteocalcin expression in LPS-induced chondrocytes. This compound is useful for research related to the modulation of inflammation and anti-inflammatory properties in biomaterials.

Glucosamine sulfate potassium chloride is an amino sugar and a prominent precursor in the biosynthesis of glycosylated proteins and lipids, commonly used as a dietary supplement. [Glucosamine sulfate potassium chloride] is also a natural component of glycosaminoglycans found in cartilage matrix and synovial fluid, exhibiting pharmacological effects on osteoarthritic cartilage and chondrocytes.

Glucosamine sulfate sodium chloride is an amino sugar that serves as a prominent precursor in the biosynthesis of glycosylated proteins and lipids, and it is utilized as a dietary supplement. It is also a natural component of glycosaminoglycans in cartilage matrix and synovial fluid, exhibiting pharmacological effects on chondrocytes and cartilage in osteoarthritis when applied externally.