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Immunotoxins and other conjugates containing saporin-s6 for cancer therapy.

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Prijava / prijava

Ribosome-inactivating proteins (RIPs) are a family of plant toxins that permanently damage ribosomes and possibly other cellular substrates, thus causing cell death. RIPs are mostly divided in two types: Type 1 RIPs that are single-chain enzymatic proteins, and type 2 RIPs that consist of an active

Inhibition of growth of breast cancer cells in vitro by the ribosome-inactivating protein saporin 6.

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Prijava / prijava

The antiproliferative activity of Saporin 6, a Ribosome-inactivating protein purified from the seeds of Saponaria officinalis has been tested on human breast cancer cells in vitro by the analysis (a) of colony formation in cells from surgical specimens from 27 patients bearing primary breast cancer

Real time monitoring of the cell viability during treatment with tumor-targeted toxins and saponins using impedance measurement.

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This work describes the application of an impedance-based measurement for the real time evaluation of targeted tumor therapies in cell culture (HeLa cells). We used a treatment procedure that is well established in cells and mice. Therein, tumor cells are treated with a combination of an epidermal

Construction of tumor-specific toxins using ubiquitin fusion technique.

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The use of cytotoxic agents to eliminate cancer cells is limited because of their nonselective toxicity and unwanted side effects. One of the strategies to overcome these limitations is to use latent prodrugs that become toxic in situ after being enzymatically activated in target cells. In this work

Recognition and killing of tumour cells expressing heat shock protein 65 kD with immunotoxins containing saporin.

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Prijava / prijava

The expression of heat shock proteins (HSP) of the 65 kD family (groEL) has been observed by flow cytometry using murine monoclonal antibody (MoAb) anti-HSP 65 kD (ML30) on the surface of B (Daudi) or T (H9) lymphoma cells, on a monocyte cell line (U937) and also on a primary culture of a human

Saporin-S6: a useful tool in cancer therapy.

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Prijava / prijava

Thirty years ago, the type 1 ribosome-inactivating protein (RIP) saporin-S6 (also known as saporin) was isolated from Saponaria officinalis L. seeds. Since then, the properties and mechanisms of action of saporin-S6 have been well characterized, and it has been widely employed in the construction of

Effect of saponin from Quillaja saponaria (molina) on antibody, tumour necrosis factor and interferon-gamma production.

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Saponin has been described to contain adjuvant activity in vaccination protocols, in protection against disease, and on humoral immune response. In this paper we describe the effect of a pure saponin from Quillaja saponaria (molina) on the immune response elicited in mice by two antigens, BSA and

Thermo-stability and antitumor activity on colon cancer cell lines of monoclonal anti-CEA antibody-saporin immunotoxin.

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Prijava / prijava

Eight saporin peaks were obtained from the purification of seed extracts of Saponaria officinalis L. Saporin peak No. 6 (SAP-6) showed the highest activity in the inhibition of protein synthesis (98%) in an in vitro translation study. An immunotoxin (IT) was prepared from SAP-6 conjugated to a

Antimicrobial activity, growth inhibition of human tumour cell lines, and phytochemical characterization of the hydromethanolic extract obtained from Sapindus saponaria L. aerial parts.

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Prijava / prijava

The hydromethanolic extract of Sapindus saponaria L. aerial parts was investigated for antimicrobial activity (against several Gram-positive and Gram-negative bacteria and fungi) and capacity to inhibit the growth of different human tumor cell lines as also nontumor liver cells. The evaluated

In vitro evaluation and molecular docking of QS-21 and quillaic acid from Quillaja saponaria Molina as gastric cancer agents

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The cytotoxic mechanism of the saponin QS-21 and its aglycone quillaic acid (QA) was studied on human gastric cancer cells (SNU1 and KATO III). Both compounds showed in vitro cytotoxic activity with IC₅₀ values: 7.1 μM (QS-21) and 13.6 μM (QA) on SNU1 cells; 7.4 μM (QS-21) and 67 μM (QA)

Antiproliferative quillaic acid and gypsogenin saponins from Saponaria officinalis L. roots.

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Nine quillaic acid and five gypsogenin bisdesmosides were isolated from roots of Saponaria officinalis L. (Caryophyllaceae). Seven of the quillaic acid saponins possessed a 3-O-β-D-galactopyranosyl-(1 → 2)-[β-D-xylopyranosyl-(1 → 3)]-β-D-glucuronopyranosyl unit, but differed from each other in

HER/erbB receptors as therapeutic targets of immunotoxins in human rhabdomyosarcoma cells.

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Prijava / prijava

Human rhabdomyosarcoma cells express HER/erbB growth factors receptors. Receptors belonging to this family are overexpressed and play a role in many types of epithelial and neural cancer and have been selected as targets for cancer therapy. In this paper EGF-R, HER-2 and HER-3 receptors were tested

High-speed countercurrent chromatographic recovery and off-line electrospray ionization mass spectrometry profiling of bisdesmodic saponins from Saponaria officinalis possessing synergistic toxicity enhancing properties on targeted antitumor toxins.

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Prijava / prijava

Saponaria officinalis L. (Caryophyllaceae), also known as fuller's herb or soapwort is a medicinal plant, which grows from Europe to Central Asia. Medicinal properties attributed to this plant include its antitussive and galactogogue properties. Recently, bisdesmodic saponins with very specific

Antiproliferative activity of Saponaria vaccaria constituents and related compounds.

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Total methanolic extracts of Saponaria vaccaria seed derived from several varieties, as well as various purified components obtained through successive chromatographic separations of total extracts were evaluated for their growth inhibitory activity in WiDr (colon), MDA-MB-231 (breast), NCI-417

Transition state analogues rescue ribosomes from saporin-L1 ribosome inactivating protein.

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Prijava / prijava

Ribosome inactivating proteins (RIPs) catalyze the hydrolytic depurination of one or more adenosine residues from eukaryotic ribosomes. Depurination of the ribosomal sarcin-ricin tetraloop (GAGA) causes inhibition of protein synthesis and cellular death. We characterized the catalytic properties of

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