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Isolation and characterization of a cytotoxin P4 from the venom of Naja nigricollis nigricollis preferentially active on tumor cells.
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Cytotoxin P4 was isolated from the venom of Naja nigricollis nigricollis in three steps and contained 55% of the crude cytotoxic activity. It had a molecular weight of 8 KD, was stable over a pH range of 1-11 and in boiling water for at least 15 min. It had no measurable enzymatic activities, but
Evaluation of cytotoxicity of a purified venom protein from Naja kaouthia (NKCT1) using gold nanoparticles for targeted delivery to cancer cell.
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In our earlier report, gold nanoparticle (GNP) and snake venom protein toxin NKCT1 were conjugated and primary characteristics were done. In this communication, further characteristics of GNP-NKCT1 were done with TGA, BET, Zeta potential, ICP-MS, FTIR, XPS, and in vitro release kinetics for its
Both neurotoxin II from venom of Naja naja oxiana and its endogenous analogue induce apoptosis in tumor cells.
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Both neurotoxin II (NT II from venom of Naja naja oxiana) and 20-30 kDa proteins partially purified from pig brain (NTlm) cross-reacting with antibodies to NT II were cytotoxic for L929 and K562 tumor cells at concentrations of 10(-6)-10(-8) M. Modification of Cys residues significantly reduced
Effect of membrane toxin 12 isolated from Naja naja atra on proliferation and invasion of human bladder cancer EJ cells.
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We investigated the effect of membrane toxin 12 (MT-12), isolated from Naja naja atra, a species of Chinese Cobra, on the proliferation and invasion of human bladder cancer EJ cells and studied its mechanisms using MTT assay, Transwell chamber invasion assay, scanning electron microscopy and flow
Interactions of PLA2-s from Vipera lebetina, Vipera berus berus and Naja naja oxiana venom with platelets, bacterial and cancer cells.
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Secretory phospholipasesA(2) (sPLA(2)s) form a large family of structurally related enzymes widespread in nature. Herein, we studied the inhibitory effects of sPLA(2)s from Vipera lebetina (VLPLA(2)), Vipera berus berus (VBBPLA(2)), and Naja naja oxiana (NNOPLA(2)) venoms on (i) human platelets,
Cytotoxicity of cobra (Naja naja kaouthia) venom on rabbit red blood cells and S-180 tumor cells in the presence of tetracaine, lidocaine and procaine.
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The cytocidal action of Naja naja kaouthia venom on rabbit red blood cells and S-180 tumor cells treated with local anesthetics (tetracaine, lidocaine and procaine) were studied. The S-180 cells were more sensitive to the venom than the red blood cells which required albumin for efficient hemolysis
Expression and characterization of a novel recombinant cytotoxin II from Naja naja oxiana venom: A potential treatment for breast cancer
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Breast cancer (BC) is among the leading causes of mortality from cancer in women. Many of the available anticancer drugs have various side effects. Therefore, researchers are seeking novel anticancer agents particularly from natural compounds and in this regard, snake venom is still one of the main
Naja ashei venom induces mitochondria-mediated apoptosis in human colorectal cancer cells.
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In the present study, we investigated the antiproliferative activity of Naja ashei full venom (NAV) on human colorectal cancer cells. The NAV-induced antiproliferative effect was associated with cell cycle arrest in S phase and increased number of cells with sub G0/G1 DNA content, which is
Naja Naja Oxiana Venom Fraction Selectively Induces ROS-Mediated Apoptosis in Human Colorectal Tumor Cells by Directly Targeting Mitochondria
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Objective: To investigate the selective effect of Naja naja oxiana crude venom and its fractions on human colorectal cancer mitochondria to activate apoptosis signaling. Methods: Cells and mitochondria isolated from human cancerous and normal colorectal tissues exposed to N. oxiana crude venom and
Anticancer Activity a of Caspian Cobra (Naja naja oxiana) snake Venom in Human Cancer Cell Lines Via Induction of Apoptosis.
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Cancer is the leading cause of death worldwide. Current anticancer drugs involve various toxic side effects; efforts are ongoing to develop new anticancer agents especially from the screening of natural compounds. Present study investigated cytotoxic effects and mode of cell death induced by the
The anticancer effect of cytotoxin 1 from Naja atra Cantor venom is mediated by a lysosomal cell death pathway involving lysosomal membrane permeabilization and cathepsin B release.
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The cytotoxin family of cobra venom proteins, also called cardiotoxins, can activate both necrotic and apoptotic cell death pathways in cancer cells. Cytotoxin 1 (CTX1)from Naja atra Cantor venom is a 60 amino acid, 6698 Da protein with as yet untested anticancer efficacy and cell selectivity. We
Involvement of c-jun N-terminal kinase in G2/M arrest and caspase-mediated apoptosis induced by cardiotoxin III (Naja naja atra) in K562 leukemia cells.
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Cardiotoxin III (CTX III), a basic polypeptide with 60 amino acid residues isolated from Naja naja atra venom, may have a potentiality as a structural template for rational drug design in killing cancer cells. Treatment of K562 cells with 0.3 microM of CTX III resulted in G2/M phase cell cycle
Phospholipase A2 activity-dependent and -independent fusogenic activity of Naja nigricollis CMS-9 on zwitterionic and anionic phospholipid vesicles.
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CMS-9, a phospholipase A(2) (PLA(2)) from Naja nigricollis venom, induced the death of human breast cancer MCF-7 cells accompanied with the formation of cell clumps without clear boundaries between cells. Annexin V-FITC staining indicated that abundant phosphatidylserine appeared on the outer
Comparative characterization of two toxic phospholipases A2 from Indian cobra (Naja naja naja) venom.
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Indian cobra venom contains many phospholipase A2 (PLA2) toxins. In the present study two toxic PLA2s have been purified from the Indian cobra (Naja naja naja) venom by column chromatography. The NN-XIa-and NN-XIb-PLA2s have mol. wts between 10,700 and 15,000. The NN-XIa-PLA2 induces myotoxic
INN-toxin, a highly lethal peptide from the venom of Indian cobra (Naja naja) venom-Isolation, characterization and pharmacological actions.
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A novel toxic polypeptide, INN-toxin, is purified from the venom of Naja naja using combination of gel-permeation and ion-exchange chromatography. It has a molecular mass of 6951.6Da as determined by MALDI-TOF/MS and the N-terminal sequence of LKXNKLVPLF. It showed both neurotoxic as well as
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