Structure based design and synthesis of peptide inhibitor of human LOX-12: in vitro and in vivo analysis of a novel therapeutic agent for breast cancer

Human breast cancer cell proliferation involves a complex interaction between growth factors, steroid hormones and peptide hormones. The interaction of growth factors, such as epidermal growth factor (EGF), with their receptors on breast cancer cells can lead to the hydrolysis of phospholipids and r...

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Veröffentlicht in:PloS one 2012-02, Vol.7 (2), p.e32521
Hauptverfasser: Singh, Abhay Kumar, Singh, Ratnakar, Naz, Farhat, Chauhan, Shyam Singh, Dinda, Amit, Shukla, Abhay Anand, Gill, Kamaldeep, Kapoor, Vaishali, Dey, Sharmistha
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container_issue 2
container_start_page e32521
container_title PloS one
container_volume 7
creator Singh, Abhay Kumar
Singh, Ratnakar
Naz, Farhat
Chauhan, Shyam Singh
Dinda, Amit
Shukla, Abhay Anand
Gill, Kamaldeep
Kapoor, Vaishali
Dey, Sharmistha
description Human breast cancer cell proliferation involves a complex interaction between growth factors, steroid hormones and peptide hormones. The interaction of growth factors, such as epidermal growth factor (EGF), with their receptors on breast cancer cells can lead to the hydrolysis of phospholipids and release of fatty acid such as arachidonic acid, which can be further metabolized by cyclooxygenase (COX) and lipoxygenase (LOX) pathways to produce prostaglandins. The high concentration of prostaglandins has been associated with chronic inflammatory diseases and several types of human cancers. This is due to the over expression COX, LOX and other inflammatory enzymes. Ten peptides were designed and synthesized by solid phase peptide synthesis and analyzed in vitro for enzyme inhibition. Out of these peptides, YWCS had shown significant inhibitory effects. The dissociation constant (K(D)) was determined by surface plasmon resonance (SPR) analysis and was found to be 3.39 × 10(-8) M and 8.6 × 10(-8) M for YWCS and baicalein (positive control), respectively. The kinetic constant Ki was 72.45 × 10(-7) M as determined by kinetic assay. The peptide significantly reduced the cell viability of estrogen positive MCF-7 and estrogen negative MDA-MB-231 cell line with the half maximal concentration (IC(50)) of 75 µM and 400 µM, respectively. The peptide also induced 49.8% and 20.8% apoptosis in breast cancer cells MCF-7 and MDA-MB-231, respectively. The YWCS was also found to be least hemolytic at a concentration of 358 µM. In vivo studies had shown that the peptide significantly inhibits tumor growth in mice (p
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The interaction of growth factors, such as epidermal growth factor (EGF), with their receptors on breast cancer cells can lead to the hydrolysis of phospholipids and release of fatty acid such as arachidonic acid, which can be further metabolized by cyclooxygenase (COX) and lipoxygenase (LOX) pathways to produce prostaglandins. The high concentration of prostaglandins has been associated with chronic inflammatory diseases and several types of human cancers. This is due to the over expression COX, LOX and other inflammatory enzymes. Ten peptides were designed and synthesized by solid phase peptide synthesis and analyzed in vitro for enzyme inhibition. Out of these peptides, YWCS had shown significant inhibitory effects. The dissociation constant (K(D)) was determined by surface plasmon resonance (SPR) analysis and was found to be 3.39 × 10(-8) M and 8.6 × 10(-8) M for YWCS and baicalein (positive control), respectively. The kinetic constant Ki was 72.45 × 10(-7) M as determined by kinetic assay. The peptide significantly reduced the cell viability of estrogen positive MCF-7 and estrogen negative MDA-MB-231 cell line with the half maximal concentration (IC(50)) of 75 µM and 400 µM, respectively. The peptide also induced 49.8% and 20.8% apoptosis in breast cancer cells MCF-7 and MDA-MB-231, respectively. The YWCS was also found to be least hemolytic at a concentration of 358 µM. In vivo studies had shown that the peptide significantly inhibits tumor growth in mice (p&lt;0.017). This peptide can be used as a lead compound and complement for ongoing efforts to develop differentiation therapies for breast cancer.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0032521</identifier><identifier>PMID: 22384268</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Animals ; Antineoplastic Agents - pharmacology ; Apoptosis ; Arachidonate 12-Lipoxygenase - chemistry ; Arachidonic acid ; Biochemistry ; Biology ; Biophysics ; Breast cancer ; Breast Neoplasms - drug therapy ; Breast Neoplasms - enzymology ; Cancer ; Cancer therapies ; Cell Line, Tumor ; Cell proliferation ; Cell Survival ; Chemical compounds ; Chemistry, Pharmaceutical - methods ; Chemotherapy ; Cloning ; Cytotoxicity ; Development and progression ; Dissociation ; Drug Design ; Drug Screening Assays, Antitumor ; Enzymes ; Epidermal growth factor ; Epidermal growth factors ; Estrogens ; Estrogens - metabolism ; Ethics ; Fatty acids ; Female ; Flow Cytometry - methods ; Glycine max ; Growth factors ; Health aspects ; Hormones ; Humans ; In vivo methods and tests ; Inflammatory diseases ; Inhibitory Concentration 50 ; Kinetics ; Laboratory animals ; Lipoxygenase ; Lipoxygenase Inhibitors - chemical synthesis ; Lipoxygenase Inhibitors - chemistry ; Liquid oxygen ; Mammary Neoplasms, Animal - drug therapy ; Mammary Neoplasms, Animal - enzymology ; Medicine ; Membrane lipids ; Metastasis ; Mice ; Pathogenesis ; Peptide hormones ; Peptide inhibitors ; Peptide synthesis ; Peptides ; Peptides - chemistry ; Pharmacology ; Phospholipids ; Prostaglandin endoperoxide synthase ; Prostaglandins ; Protein Binding ; Proteins ; Receptors ; Recombinant Proteins - metabolism ; Solvents ; Steroid hormones ; Studies ; Surface plasmon resonance ; Synthesis ; Unsaturated fatty acids</subject><ispartof>PloS one, 2012-02, Vol.7 (2), p.e32521</ispartof><rights>COPYRIGHT 2012 Public Library of Science</rights><rights>2012 Singh et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License: https://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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The interaction of growth factors, such as epidermal growth factor (EGF), with their receptors on breast cancer cells can lead to the hydrolysis of phospholipids and release of fatty acid such as arachidonic acid, which can be further metabolized by cyclooxygenase (COX) and lipoxygenase (LOX) pathways to produce prostaglandins. The high concentration of prostaglandins has been associated with chronic inflammatory diseases and several types of human cancers. This is due to the over expression COX, LOX and other inflammatory enzymes. Ten peptides were designed and synthesized by solid phase peptide synthesis and analyzed in vitro for enzyme inhibition. Out of these peptides, YWCS had shown significant inhibitory effects. The dissociation constant (K(D)) was determined by surface plasmon resonance (SPR) analysis and was found to be 3.39 × 10(-8) M and 8.6 × 10(-8) M for YWCS and baicalein (positive control), respectively. The kinetic constant Ki was 72.45 × 10(-7) M as determined by kinetic assay. The peptide significantly reduced the cell viability of estrogen positive MCF-7 and estrogen negative MDA-MB-231 cell line with the half maximal concentration (IC(50)) of 75 µM and 400 µM, respectively. The peptide also induced 49.8% and 20.8% apoptosis in breast cancer cells MCF-7 and MDA-MB-231, respectively. The YWCS was also found to be least hemolytic at a concentration of 358 µM. In vivo studies had shown that the peptide significantly inhibits tumor growth in mice (p&lt;0.017). This peptide can be used as a lead compound and complement for ongoing efforts to develop differentiation therapies for breast cancer.</description><subject>Animals</subject><subject>Antineoplastic Agents - pharmacology</subject><subject>Apoptosis</subject><subject>Arachidonate 12-Lipoxygenase - chemistry</subject><subject>Arachidonic acid</subject><subject>Biochemistry</subject><subject>Biology</subject><subject>Biophysics</subject><subject>Breast cancer</subject><subject>Breast Neoplasms - drug therapy</subject><subject>Breast Neoplasms - enzymology</subject><subject>Cancer</subject><subject>Cancer therapies</subject><subject>Cell Line, Tumor</subject><subject>Cell proliferation</subject><subject>Cell Survival</subject><subject>Chemical compounds</subject><subject>Chemistry, Pharmaceutical - methods</subject><subject>Chemotherapy</subject><subject>Cloning</subject><subject>Cytotoxicity</subject><subject>Development and progression</subject><subject>Dissociation</subject><subject>Drug Design</subject><subject>Drug Screening Assays, Antitumor</subject><subject>Enzymes</subject><subject>Epidermal growth factor</subject><subject>Epidermal growth factors</subject><subject>Estrogens</subject><subject>Estrogens - metabolism</subject><subject>Ethics</subject><subject>Fatty acids</subject><subject>Female</subject><subject>Flow Cytometry - methods</subject><subject>Glycine max</subject><subject>Growth factors</subject><subject>Health aspects</subject><subject>Hormones</subject><subject>Humans</subject><subject>In vivo methods and tests</subject><subject>Inflammatory diseases</subject><subject>Inhibitory Concentration 50</subject><subject>Kinetics</subject><subject>Laboratory animals</subject><subject>Lipoxygenase</subject><subject>Lipoxygenase Inhibitors - chemical synthesis</subject><subject>Lipoxygenase Inhibitors - chemistry</subject><subject>Liquid oxygen</subject><subject>Mammary Neoplasms, Animal - drug therapy</subject><subject>Mammary Neoplasms, Animal - enzymology</subject><subject>Medicine</subject><subject>Membrane lipids</subject><subject>Metastasis</subject><subject>Mice</subject><subject>Pathogenesis</subject><subject>Peptide hormones</subject><subject>Peptide inhibitors</subject><subject>Peptide synthesis</subject><subject>Peptides</subject><subject>Peptides - chemistry</subject><subject>Pharmacology</subject><subject>Phospholipids</subject><subject>Prostaglandin endoperoxide synthase</subject><subject>Prostaglandins</subject><subject>Protein Binding</subject><subject>Proteins</subject><subject>Receptors</subject><subject>Recombinant Proteins - metabolism</subject><subject>Solvents</subject><subject>Steroid hormones</subject><subject>Studies</subject><subject>Surface plasmon resonance</subject><subject>Synthesis</subject><subject>Unsaturated fatty acids</subject><issn>1932-6203</issn><issn>1932-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>DOA</sourceid><recordid>eNqNk9-KEzEUxgdR3HX1DUQDguBFazKZyWS8EJbFP4VCwVXxLpxJMm3KNBmTTLFP4uuatrNLCwoyF5Oc_L4vyUdOlj0neEpoRd6u3eAtdNPeWT3FmOZlTh5kl6Sm-YTlmD48GV9kT0JYY1xSztjj7CLPKS9yxi-z37fRDzIOXqMGglZI6WCWFoFVKOxsXKVpQK5Fve6jURoZuzKNic7vi6thAxbNFz8mJH-XltDWRO8O4sNkux9Dtxs9AFm31R1Krh56PUQjESy1jahNfo3XECKSYKX2T7NHLXRBPxv_V9m3jx--3nyezBefZjfX84lkNYkT1mBaS1q3bVEXDasksJYXvGqbkhU1rwsFXMmqzDVuieSYs0arkleAC6UZV_Qqe3n07TsXxJhpEISmhEqCMU_E7EgoB2vRe7MBvxMOjDgUnF8K8OkmnRbQQA0UWEEILrCquWqSA-ENhrJk1d7r_bjb0Gy0kunqHroz0_MVa1Zi6baC5rxkvE4Gr0YD734OOsR_HHmklpBOZWzrkpncmCDFdVFVuCRlSRM1_QuVPqU3RqZX1ZpUPxO8ORMkJupfcQlDCGJ2--X_2cX3c_b1CbvS0MVVcF16Hs6Gc7A4gtK7ELxu75MjWOyb4i4NsW8KMTZFkr04Tf1edNcF9A_96Agu</recordid><startdate>20120223</startdate><enddate>20120223</enddate><creator>Singh, Abhay Kumar</creator><creator>Singh, Ratnakar</creator><creator>Naz, Farhat</creator><creator>Chauhan, Shyam Singh</creator><creator>Dinda, Amit</creator><creator>Shukla, Abhay Anand</creator><creator>Gill, Kamaldeep</creator><creator>Kapoor, Vaishali</creator><creator>Dey, Sharmistha</creator><general>Public Library of Science</general><general>Public Library of Science (PLoS)</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>IOV</scope><scope>ISR</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7QO</scope><scope>7RV</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TG</scope><scope>7TM</scope><scope>7U9</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB.</scope><scope>KB0</scope><scope>KL.</scope><scope>L6V</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>M7S</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PATMY</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>RC3</scope><scope>5PM</scope><scope>DOA</scope></search><sort><creationdate>20120223</creationdate><title>Structure based design and synthesis of peptide inhibitor of human LOX-12: in vitro and in vivo analysis of a novel therapeutic agent for breast cancer</title><author>Singh, Abhay Kumar ; Singh, Ratnakar ; Naz, Farhat ; Chauhan, Shyam Singh ; Dinda, Amit ; Shukla, Abhay Anand ; Gill, Kamaldeep ; Kapoor, Vaishali ; Dey, Sharmistha</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c691t-6b039c39ff494b67ca6f8487fb5649894da8dc752e0f1c8086bed587a04de68d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Animals</topic><topic>Antineoplastic Agents - 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The interaction of growth factors, such as epidermal growth factor (EGF), with their receptors on breast cancer cells can lead to the hydrolysis of phospholipids and release of fatty acid such as arachidonic acid, which can be further metabolized by cyclooxygenase (COX) and lipoxygenase (LOX) pathways to produce prostaglandins. The high concentration of prostaglandins has been associated with chronic inflammatory diseases and several types of human cancers. This is due to the over expression COX, LOX and other inflammatory enzymes. Ten peptides were designed and synthesized by solid phase peptide synthesis and analyzed in vitro for enzyme inhibition. Out of these peptides, YWCS had shown significant inhibitory effects. The dissociation constant (K(D)) was determined by surface plasmon resonance (SPR) analysis and was found to be 3.39 × 10(-8) M and 8.6 × 10(-8) M for YWCS and baicalein (positive control), respectively. The kinetic constant Ki was 72.45 × 10(-7) M as determined by kinetic assay. The peptide significantly reduced the cell viability of estrogen positive MCF-7 and estrogen negative MDA-MB-231 cell line with the half maximal concentration (IC(50)) of 75 µM and 400 µM, respectively. The peptide also induced 49.8% and 20.8% apoptosis in breast cancer cells MCF-7 and MDA-MB-231, respectively. The YWCS was also found to be least hemolytic at a concentration of 358 µM. In vivo studies had shown that the peptide significantly inhibits tumor growth in mice (p&lt;0.017). This peptide can be used as a lead compound and complement for ongoing efforts to develop differentiation therapies for breast cancer.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>22384268</pmid><doi>10.1371/journal.pone.0032521</doi><tpages>e32521</tpages><oa>free_for_read</oa></addata></record>
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subjects Animals
Antineoplastic Agents - pharmacology
Apoptosis
Arachidonate 12-Lipoxygenase - chemistry
Arachidonic acid
Biochemistry
Biology
Biophysics
Breast cancer
Breast Neoplasms - drug therapy
Breast Neoplasms - enzymology
Cancer
Cancer therapies
Cell Line, Tumor
Cell proliferation
Cell Survival
Chemical compounds
Chemistry, Pharmaceutical - methods
Chemotherapy
Cloning
Cytotoxicity
Development and progression
Dissociation
Drug Design
Drug Screening Assays, Antitumor
Enzymes
Epidermal growth factor
Epidermal growth factors
Estrogens
Estrogens - metabolism
Ethics
Fatty acids
Female
Flow Cytometry - methods
Glycine max
Growth factors
Health aspects
Hormones
Humans
In vivo methods and tests
Inflammatory diseases
Inhibitory Concentration 50
Kinetics
Laboratory animals
Lipoxygenase
Lipoxygenase Inhibitors - chemical synthesis
Lipoxygenase Inhibitors - chemistry
Liquid oxygen
Mammary Neoplasms, Animal - drug therapy
Mammary Neoplasms, Animal - enzymology
Medicine
Membrane lipids
Metastasis
Mice
Pathogenesis
Peptide hormones
Peptide inhibitors
Peptide synthesis
Peptides
Peptides - chemistry
Pharmacology
Phospholipids
Prostaglandin endoperoxide synthase
Prostaglandins
Protein Binding
Proteins
Receptors
Recombinant Proteins - metabolism
Solvents
Steroid hormones
Studies
Surface plasmon resonance
Synthesis
Unsaturated fatty acids
title Structure based design and synthesis of peptide inhibitor of human LOX-12: in vitro and in vivo analysis of a novel therapeutic agent for breast cancer
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