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Volumn 34, Issue 25, 2013, Pages 6068-6081

Biodegradable polyglycerols with randomly distributed ketal groups as multi-functional drug delivery systems

Author keywords

Biocompatibility; Biodegradable polyglycerols; Invivo degradation; Ketal groups; Multifunctional nanostructures; PH dependent hydrolysis

Indexed keywords

IN-VIVO; KETAL GROUPS; MULTIFUNCTIONAL NANOSTRUCTURES; PH-DEPENDENT; POLYGLYCEROLS;

EID: 84878532612     PISSN: 01429612     EISSN: 18785905     Source Type: Journal    
DOI: 10.1016/j.biomaterials.2013.04.043     Document Type: Article
Times cited : (51)

References (54)
  • 4
    • 0037120670 scopus 로고    scopus 로고
    • Poly (ortho esters): synthesis, characterization, properties and uses
    • Heller J., Barr J., Ng S.Y., Abdellauoi K.S., Gurny R. Poly (ortho esters): synthesis, characterization, properties and uses. Adv Drug Deliv Rev 2002, 54:1015-1039.
    • (2002) Adv Drug Deliv Rev , vol.54 , pp. 1015-1039
    • Heller, J.1    Barr, J.2    Ng, S.Y.3    Abdellauoi, K.S.4    Gurny, R.5
  • 7
    • 0034006495 scopus 로고    scopus 로고
    • Visual evidence of acidic environment within degrading poly(lactic-co-glycolic acid) (PLGA) microspheres
    • Fu K., Pack D.W., Klibanov A.M., Langer R. Visual evidence of acidic environment within degrading poly(lactic-co-glycolic acid) (PLGA) microspheres. Pharm Res 2000, 17:100-106.
    • (2000) Pharm Res , vol.17 , pp. 100-106
    • Fu, K.1    Pack, D.W.2    Klibanov, A.M.3    Langer, R.4
  • 8
    • 0037151421 scopus 로고    scopus 로고
    • Polymer based pH-sensitive carriers as a means to improve the cytoplasmic delivery of drugs
    • Roux E., Francis M., Winnik F.M., Leroux J.C. Polymer based pH-sensitive carriers as a means to improve the cytoplasmic delivery of drugs. Int J Pharm 2002, 242:25-36.
    • (2002) Int J Pharm , vol.242 , pp. 25-36
    • Roux, E.1    Francis, M.2    Winnik, F.M.3    Leroux, J.C.4
  • 9
    • 1942438684 scopus 로고    scopus 로고
    • Polymeric anticancer drugs with pH-controlled activation
    • Ubrich K., Subr V. Polymeric anticancer drugs with pH-controlled activation. Adv Drug Deliv Rev 2004, 56:1023-1050.
    • (2004) Adv Drug Deliv Rev , vol.56 , pp. 1023-1050
    • Ubrich, K.1    Subr, V.2
  • 10
    • 84863907494 scopus 로고    scopus 로고
    • Before and after endosomal escape: roles of stimuli-converting siRNA/polymer interactions in determining gene silencing efficiency
    • Kwon Y.J. Before and after endosomal escape: roles of stimuli-converting siRNA/polymer interactions in determining gene silencing efficiency. Acc Chem Res 2012, 45:1077-1088.
    • (2012) Acc Chem Res , vol.45 , pp. 1077-1088
    • Kwon, Y.J.1
  • 11
    • 66749133619 scopus 로고    scopus 로고
    • Amphiphilic copolymer having acid-labile acetal in the side chain as a hydrophobe: controlled release of aldehyde by thermoresponsive aggregation-dissociation of polymeric micelles
    • Morinaga H., Morikawa H., Wang Y., Sudo A., Endo T. Amphiphilic copolymer having acid-labile acetal in the side chain as a hydrophobe: controlled release of aldehyde by thermoresponsive aggregation-dissociation of polymeric micelles. Macromolecules 2009, 42:2229-2235.
    • (2009) Macromolecules , vol.42 , pp. 2229-2235
    • Morinaga, H.1    Morikawa, H.2    Wang, Y.3    Sudo, A.4    Endo, T.5
  • 12
    • 0344063545 scopus 로고    scopus 로고
    • Polyacetal-doxorubicin conjugates designed for pH dependent degradation
    • Tomlinson R., Heller J., Brocchini S., Duncan R. Polyacetal-doxorubicin conjugates designed for pH dependent degradation. Bioconjug Chem 2003, 14:1096-1106.
    • (2003) Bioconjug Chem , vol.14 , pp. 1096-1106
    • Tomlinson, R.1    Heller, J.2    Brocchini, S.3    Duncan, R.4
  • 13
    • 0037080616 scopus 로고    scopus 로고
    • Pendant chain functionalized polyacetals that display pH-dependent degradation: a platform for the development of novel polymer therapeutics
    • Tomlinson R., Klee M., Garrett S., Heller J., Duncan R., Brocchini S. Pendant chain functionalized polyacetals that display pH-dependent degradation: a platform for the development of novel polymer therapeutics. Macromolecules 2002, 35:473-480.
    • (2002) Macromolecules , vol.35 , pp. 473-480
    • Tomlinson, R.1    Klee, M.2    Garrett, S.3    Heller, J.4    Duncan, R.5    Brocchini, S.6
  • 14
    • 78650813107 scopus 로고    scopus 로고
    • Synthesis of amphiphilic polyacetal by polycondensation of aldehyde and polyethylene glycol as an acid-labile polymer for controlled release of aldehyde
    • Wang Y., Morinaga H., Sudo A., Endo T. Synthesis of amphiphilic polyacetal by polycondensation of aldehyde and polyethylene glycol as an acid-labile polymer for controlled release of aldehyde. JPolym Sci Part A Polym Chem 2011, 49:596-602.
    • (2011) JPolym Sci Part A Polym Chem , vol.49 , pp. 596-602
    • Wang, Y.1    Morinaga, H.2    Sudo, A.3    Endo, T.4
  • 15
    • 84873649322 scopus 로고    scopus 로고
    • Universal concept for the implementation of single cleavable unit at tunable position in functional poly(ethylene glycol)s
    • ASAP article
    • Dingels C., Muller S., Steinbach T., Tonhauser C., Frey H. Universal concept for the implementation of single cleavable unit at tunable position in functional poly(ethylene glycol)s. Biomacromolecules 2012, ASAP article. 10.1021/bm3016797.
    • (2012) Biomacromolecules
    • Dingels, C.1    Muller, S.2    Steinbach, T.3    Tonhauser, C.4    Frey, H.5
  • 16
    • 79959437102 scopus 로고    scopus 로고
    • Hyperbranched polyacetals with tunable degradation rates
    • Chatterjee S., Ramakrishnan S. Hyperbranched polyacetals with tunable degradation rates. Macromolecules 2011, 44:4658-4664.
    • (2011) Macromolecules , vol.44 , pp. 4658-4664
    • Chatterjee, S.1    Ramakrishnan, S.2
  • 17
    • 27944508780 scopus 로고    scopus 로고
    • Polyketal nanoparticles: a new pH-sensitive biodegradable drug delivery vehicle
    • Heffernan M.J., Murthy N. Polyketal nanoparticles: a new pH-sensitive biodegradable drug delivery vehicle. Bioconjug Chem 2005, 16:1340-1342.
    • (2005) Bioconjug Chem , vol.16 , pp. 1340-1342
    • Heffernan, M.J.1    Murthy, N.2
  • 18
    • 33846456612 scopus 로고    scopus 로고
    • Polyketal microparticles: a new delivery vehicle for superoxide dismutase
    • Lee S., Yang S.C., Heffernan M.J., Taylor W.R., Murthy N. Polyketal microparticles: a new delivery vehicle for superoxide dismutase. Bioconjug Chem 2007, 18:4-7.
    • (2007) Bioconjug Chem , vol.18 , pp. 4-7
    • Lee, S.1    Yang, S.C.2    Heffernan, M.J.3    Taylor, W.R.4    Murthy, N.5
  • 19
    • 45749089792 scopus 로고    scopus 로고
    • Polyketal copolymers: a new acid-sensitive delivery vehicle for treating acute inflammatory diseases
    • Yang S.C., Bhide M., Crispe I.N., Pierce R.H., Murthy N. Polyketal copolymers: a new acid-sensitive delivery vehicle for treating acute inflammatory diseases. Bioconjug Chem 2008, 19:1164-1169.
    • (2008) Bioconjug Chem , vol.19 , pp. 1164-1169
    • Yang, S.C.1    Bhide, M.2    Crispe, I.N.3    Pierce, R.H.4    Murthy, N.5
  • 20
    • 54949112389 scopus 로고    scopus 로고
    • Sustained release of a p38 inhibitor from non-inflammatory microspheres inhibits cardiac dysfunction
    • Sy J.C., Seshadri G., Yang S.C., Brown M., Oh T., Dikalov S., et al. Sustained release of a p38 inhibitor from non-inflammatory microspheres inhibits cardiac dysfunction. Nat Mater 2008, 7:863-869.
    • (2008) Nat Mater , vol.7 , pp. 863-869
    • Sy, J.C.1    Seshadri, G.2    Yang, S.C.3    Brown, M.4    Oh, T.5    Dikalov, S.6
  • 22
    • 57549102942 scopus 로고    scopus 로고
    • + T-cells by dendritic cells pulsed with polyketal microparticles containing ion-paired protein antigen and poly(inosinic acid) and poly(cytidylic acid)
    • + T-cells by dendritic cells pulsed with polyketal microparticles containing ion-paired protein antigen and poly(inosinic acid) and poly(cytidylic acid). Biomaterials 2009, 30:910-918.
    • (2009) Biomaterials , vol.30 , pp. 910-918
    • Heffernan, M.J.1    Kasturi, S.P.2    Yang, S.C.3    Pulendran, B.4    Murthy, N.5
  • 23
    • 72149126107 scopus 로고    scopus 로고
    • The delivery of superoxide dismutase encapsulated in polyketal microparticles to rat myocardium and protection from myocardial ischemia-reperfusion injury
    • Seshadri G., Sy J.C., Brown M., Dikalov S., Yang S.C., Murthy N., et al. The delivery of superoxide dismutase encapsulated in polyketal microparticles to rat myocardium and protection from myocardial ischemia-reperfusion injury. Biomaterials 2010, 31:1372-1379.
    • (2010) Biomaterials , vol.31 , pp. 1372-1379
    • Seshadri, G.1    Sy, J.C.2    Brown, M.3    Dikalov, S.4    Yang, S.C.5    Murthy, N.6
  • 24
    • 33847073760 scopus 로고    scopus 로고
    • Synthesis and degradation of pH-sensitive linear poly (amidoamine)s
    • Jain R., Standley S.M., Frechet J.M.J. Synthesis and degradation of pH-sensitive linear poly (amidoamine)s. Macromolecules 2007, 40:452-457.
    • (2007) Macromolecules , vol.40 , pp. 452-457
    • Jain, R.1    Standley, S.M.2    Frechet, J.M.J.3
  • 25
    • 56049107315 scopus 로고    scopus 로고
    • Acid-degradable polyurethane particles for protein-based vaccines: biological evaluation and invitro analysis of particle degradation products
    • Bachelder E.M., Baudette T.T., Broaders K.E., Paramonov S.E., Dashe J., Frechet J.M.J. Acid-degradable polyurethane particles for protein-based vaccines: biological evaluation and invitro analysis of particle degradation products. Mol Pharm 2008, 5:876-884.
    • (2008) Mol Pharm , vol.5 , pp. 876-884
    • Bachelder, E.M.1    Baudette, T.T.2    Broaders, K.E.3    Paramonov, S.E.4    Dashe, J.5    Frechet, J.M.J.6
  • 26
    • 42949116303 scopus 로고    scopus 로고
    • Enhanced cell penetration of acid-degradable particles functionalized with cell-penetrating peptides
    • Cohen J.L., Almutairi A., Cohen J.A., Bernstein M., Brody S.L., Schuster D.P., et al. Enhanced cell penetration of acid-degradable particles functionalized with cell-penetrating peptides. Bioconjug Chem 2008, 19:876-881.
    • (2008) Bioconjug Chem , vol.19 , pp. 876-881
    • Cohen, J.L.1    Almutairi, A.2    Cohen, J.A.3    Bernstein, M.4    Brody, S.L.5    Schuster, D.P.6
  • 28
    • 84866405843 scopus 로고    scopus 로고
    • Branched multifunctional polyether polyketals: variation of ketal group structure enables unprecedented control over polymer degradation in solution and within cells
    • Shenoi R.A., Narayanannair J.K., Hamilton J.H., Lai B.F.L., Horte S., Kainthan R.K., et al. Branched multifunctional polyether polyketals: variation of ketal group structure enables unprecedented control over polymer degradation in solution and within cells. JAm Chem Soc 2012, 134:14945-14957.
    • (2012) JAm Chem Soc , vol.134 , pp. 14945-14957
    • Shenoi, R.A.1    Narayanannair, J.K.2    Hamilton, J.H.3    Lai, B.F.L.4    Horte, S.5    Kainthan, R.K.6
  • 29
    • 75749110533 scopus 로고    scopus 로고
    • Dendritic polyglycerols for biomedical applications
    • Calderon M., Quadir M.A., Sharma S.K., Haag R. Dendritic polyglycerols for biomedical applications. Adv Mater 2010, 22:190-218.
    • (2010) Adv Mater , vol.22 , pp. 190-218
    • Calderon, M.1    Quadir, M.A.2    Sharma, S.K.3    Haag, R.4
  • 30
    • 75449084381 scopus 로고    scopus 로고
    • Hyperbranched polyglycerols: from the controlled synthesis of biocompatible polyether polyols to multipurpose applications
    • Wilms D., Striba S.E., Frey H. Hyperbranched polyglycerols: from the controlled synthesis of biocompatible polyether polyols to multipurpose applications. Acc Chem Res 2010, 43:129-141.
    • (2010) Acc Chem Res , vol.43 , pp. 129-141
    • Wilms, D.1    Striba, S.E.2    Frey, H.3
  • 31
    • 33847323025 scopus 로고    scopus 로고
    • Synthesis, characterization and viscoelastic properties of high molecular weight hyperbranched polyglycerols
    • Kainthan R.K., Muliawan E.B., Hatzikiriakos S.G., Brooks D.E. Synthesis, characterization and viscoelastic properties of high molecular weight hyperbranched polyglycerols. Macromolecules 2006, 39:7708-7717.
    • (2006) Macromolecules , vol.39 , pp. 7708-7717
    • Kainthan, R.K.1    Muliawan, E.B.2    Hatzikiriakos, S.G.3    Brooks, D.E.4
  • 32
    • 66549091286 scopus 로고    scopus 로고
    • Hyperbranched polyglycerols with elevated molecular weights: a facile two-step synthesis protocol based on polyglycerol macroinitiators
    • Wilms D., Wurm F., Nieberle J., Bohm P., Kemmer-Jonas U., Frey H. Hyperbranched polyglycerols with elevated molecular weights: a facile two-step synthesis protocol based on polyglycerol macroinitiators. Macromolecules 2009, 42:3230-3236.
    • (2009) Macromolecules , vol.42 , pp. 3230-3236
    • Wilms, D.1    Wurm, F.2    Nieberle, J.3    Bohm, P.4    Kemmer-Jonas, U.5    Frey, H.6
  • 34
    • 77949396528 scopus 로고    scopus 로고
    • Enhanced cell surface polymer grafting in concentrated and nonreactive aqueous polymer solutions
    • Rossi N.A.A., Constantinescu I., Brooks D.E., Scott M.D., Kizhakkedathu J.N. Enhanced cell surface polymer grafting in concentrated and nonreactive aqueous polymer solutions. JAm Chem Soc 2010, 132:3423-3430.
    • (2010) JAm Chem Soc , vol.132 , pp. 3423-3430
    • Rossi, N.A.A.1    Constantinescu, I.2    Brooks, D.E.3    Scott, M.D.4    Kizhakkedathu, J.N.5
  • 35
    • 0842306880 scopus 로고    scopus 로고
    • Dendritic polyglycerol sulfates as new heparin analogues and potent inhibitors of the complement system
    • Turk H., Haag R., Alban S. Dendritic polyglycerol sulfates as new heparin analogues and potent inhibitors of the complement system. Bioconjug Chem 2004, 15:162-167.
    • (2004) Bioconjug Chem , vol.15 , pp. 162-167
    • Turk, H.1    Haag, R.2    Alban, S.3
  • 37
    • 84878553471 scopus 로고    scopus 로고
    • Hyperbranched polyglycerol is an efficacious and biocompatible novel osmotic agent in a rodent model of peritoneal dialysis
    • Mendelson A.A., Guan Q., Chafeeva I., da Roza G.A., Kizhakkedathu J.N., Du C. Hyperbranched polyglycerol is an efficacious and biocompatible novel osmotic agent in a rodent model of peritoneal dialysis. Perit Dial Int 2013, 33:15-27.
    • (2013) Perit Dial Int , vol.33 , pp. 15-27
    • Mendelson, A.A.1    Guan, Q.2    Chafeeva, I.3    da Roza, G.A.4    Kizhakkedathu, J.N.5    Du, C.6
  • 38
    • 34548045025 scopus 로고    scopus 로고
    • Invivo biological evaluation of high molecular weight hyperbranched polyglycerols
    • Kainthan R.K., Brooks D.E. Invivo biological evaluation of high molecular weight hyperbranched polyglycerols. Biomaterials 2007, 28:4779-4787.
    • (2007) Biomaterials , vol.28 , pp. 4779-4787
    • Kainthan, R.K.1    Brooks, D.E.2
  • 39
    • 84655169988 scopus 로고    scopus 로고
    • Long circulating non-toxic blood pool imaging agent based on hyperbranched polyglycerols
    • Saatchi K., Gelder N., Gershkovich P., Sivak O., Wasan K.M., Kainthan R.K., et al. Long circulating non-toxic blood pool imaging agent based on hyperbranched polyglycerols. Int J Pharm 2012, 422:418-427.
    • (2012) Int J Pharm , vol.422 , pp. 418-427
    • Saatchi, K.1    Gelder, N.2    Gershkovich, P.3    Sivak, O.4    Wasan, K.M.5    Kainthan, R.K.6
  • 40
    • 84858738210 scopus 로고    scopus 로고
    • Hyperbranched polyglycerols as trimodal imaging agents: design, biocompatibility and tumor uptake
    • Saatchi K., Soema P., Gelder N., Misri R., McPhee K., Baker J.H.E., et al. Hyperbranched polyglycerols as trimodal imaging agents: design, biocompatibility and tumor uptake. Bioconjug Chem 2012, 23:372-381.
    • (2012) Bioconjug Chem , vol.23 , pp. 372-381
    • Saatchi, K.1    Soema, P.2    Gelder, N.3    Misri, R.4    McPhee, K.5    Baker, J.H.E.6
  • 41
    • 84867481106 scopus 로고    scopus 로고
    • Synthesis, characterization and biocompatibility of biodegradable hyperbranched polyglycerols from acid-cleavable ketal group functionalized initiators
    • Shenoi R.A., Lai B.F.L., Kizhakkedathu J.N. Synthesis, characterization and biocompatibility of biodegradable hyperbranched polyglycerols from acid-cleavable ketal group functionalized initiators. Biomacromolecules 2012, 13:3018-3030.
    • (2012) Biomacromolecules , vol.13 , pp. 3018-3030
    • Shenoi, R.A.1    Lai, B.F.L.2    Kizhakkedathu, J.N.3
  • 42
    • 84866368530 scopus 로고    scopus 로고
    • Branched acid-degradable, biocompatible polyether copolymers via anionic ring-opening polymerization using an epoxide inimer
    • Tonhauser C., Schull C., Dingels C., Frey H. Branched acid-degradable, biocompatible polyether copolymers via anionic ring-opening polymerization using an epoxide inimer. ACS Macro Lett 2012, 1:1094-1097.
    • (2012) ACS Macro Lett , vol.1 , pp. 1094-1097
    • Tonhauser, C.1    Schull, C.2    Dingels, C.3    Frey, H.4
  • 43
    • 84869013810 scopus 로고    scopus 로고
    • Biodegradable hyperbranched polyglycerol with ester linkages for drug delivery
    • Hu M., Chen M., Li G., Pang Y., Wang D., Wu J., et al. Biodegradable hyperbranched polyglycerol with ester linkages for drug delivery. Biomacromolecules 2012, 13:3552-3561.
    • (2012) Biomacromolecules , vol.13 , pp. 3552-3561
    • Hu, M.1    Chen, M.2    Li, G.3    Pang, Y.4    Wang, D.5    Wu, J.6
  • 44
    • 0032655802 scopus 로고    scopus 로고
    • Controlled synthesis of hyperbranched polyglycerols by ring- opening multibranching polymerization
    • Sunder A., Hanselman R., Frey H., Mulhaupt R. Controlled synthesis of hyperbranched polyglycerols by ring- opening multibranching polymerization. Macromolecules 1999, 32:4240-4246.
    • (1999) Macromolecules , vol.32 , pp. 4240-4246
    • Sunder, A.1    Hanselman, R.2    Frey, H.3    Mulhaupt, R.4
  • 45
    • 84867143165 scopus 로고    scopus 로고
    • Influence of architecture of high molecular weight linear and hyperbranched polyglycerols on their biocompatibility and biodistribution
    • Imran ul-haq M., Lai B.F.L., Chapanian R., Kizhakkedathu J.N. Influence of architecture of high molecular weight linear and hyperbranched polyglycerols on their biocompatibility and biodistribution. Biomaterials 2012, 33:9135-9147.
    • (2012) Biomaterials , vol.33 , pp. 9135-9147
    • Imran ul-haq, M.1    Lai, B.F.L.2    Chapanian, R.3    Kizhakkedathu, J.N.4
  • 46
    • 0034717253 scopus 로고    scopus 로고
    • The relative rate of hydrolysis of a series of acylic and six-membered cyclic acetals, ketals, orthoesters and orthocarbonates
    • Deslongchamps P., Dory Y.L., Li S. The relative rate of hydrolysis of a series of acylic and six-membered cyclic acetals, ketals, orthoesters and orthocarbonates. Tetrahedron 2000, 56:3533-3537.
    • (2000) Tetrahedron , vol.56 , pp. 3533-3537
    • Deslongchamps, P.1    Dory, Y.L.2    Li, S.3
  • 47
    • 2442501409 scopus 로고    scopus 로고
    • Biomaterial-associated thrombosis: roles of coagulation factors, complement, platelets and leukocytes
    • Gobert M.B., Sefton M.V. Biomaterial-associated thrombosis: roles of coagulation factors, complement, platelets and leukocytes. Biomaterials 2004, 25:5681-5703.
    • (2004) Biomaterials , vol.25 , pp. 5681-5703
    • Gobert, M.B.1    Sefton, M.V.2
  • 49
    • 34547900325 scopus 로고    scopus 로고
    • Invitro biological evaluation of high molecular weight hyperbranched polyglycerols
    • Kainthan R.K., Hester S.R., Levin E., Devine D.V., Brooks D.E. Invitro biological evaluation of high molecular weight hyperbranched polyglycerols. Biomaterials 2007, 28:4581-4590.
    • (2007) Biomaterials , vol.28 , pp. 4581-4590
    • Kainthan, R.K.1    Hester, S.R.2    Levin, E.3    Devine, D.V.4    Brooks, D.E.5
  • 50
    • 62349092383 scopus 로고    scopus 로고
    • Biocompatibility of polyglycidol with human peripheral blood mononuclear cells
    • Huang Y.C., Royappa A.T., Tundel S., Tsukamoto K., Sharma V. Biocompatibility of polyglycidol with human peripheral blood mononuclear cells. JAppl Polym Sci 2009, 111:2275-2278.
    • (2009) JAppl Polym Sci , vol.111 , pp. 2275-2278
    • Huang, Y.C.1    Royappa, A.T.2    Tundel, S.3    Tsukamoto, K.4    Sharma, V.5
  • 51
    • 58149478123 scopus 로고    scopus 로고
    • The serum complement system: a simplified laboratory exercise to measure the activity of an important component of the immune system
    • Inglis J.E., Radziwon K.A., Maniero G.D. The serum complement system: a simplified laboratory exercise to measure the activity of an important component of the immune system. Adv Physiol Educ 2008, 32:317-321.
    • (2008) Adv Physiol Educ , vol.32 , pp. 317-321
    • Inglis, J.E.1    Radziwon, K.A.2    Maniero, G.D.3
  • 53
    • 84892625448 scopus 로고    scopus 로고
    • Aguide on intravenous drug compatibilities based on their pH
    • Loubnan V., Nasser S.C. Aguide on intravenous drug compatibilities based on their pH. Pharm Glob (IJCP) 2010, 5:1-9.
    • (2010) Pharm Glob (IJCP) , vol.5 , pp. 1-9
    • Loubnan, V.1    Nasser, S.C.2


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