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Silva-Neto MAC, Fialho E, Paes MC, Oliveira PL, Masuda H. Cyclic nucleotide-independent phosphorylation of vitellin by casein kinase II purified from Rhodnius prolixus oocytes. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2002; 32:847-857. [PMID: 12110292 DOI: 10.1016/s0965-1748(01)00173-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In this study we show that Vitellin (VT) phosphorylation in chorionated oocytes of Rhodnius prolixus is completely inhibited by heparin (10 microg/ml), a classical casein kinase II (CK II) inhibitor. VT phosphorylation is not affected by modulators of cyclic nucleotide-dependent protein kinases such as c-AMP (10 microM), H-8 (1 microM) and H-89 (0.1 microM). We have obtained a 3000-fold VT-free enriched preparation of CK II. Autophosphorylation of this enzyme preparation in the presence of (32)P-ATP demonstrated that it lacks any endogenous substrates. Rhodnius CK II is strongly inhibited by heparin (Ki = 9 nM) and uses ATP (Km = 36 microM) or GTP (Km = 86 microM) as phosphate donors. Incubation of VT with purified Rhodnius CK II and (32)P-ATP led to the incorporation of 2 mols of phosphate/mol VT. However, the total number of phosphorylation sites available can be altered by previous incubation of VT with alkaline phosphatase. These data show that an insect yolk protein contain phosphorylation sites for a cyclic nucleotide-independent protein kinase such as CK II.
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Affiliation(s)
- Mário A C Silva-Neto
- Departamento de Bioquímica Médica, Instituto de Ciências Biomédicas, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, UFRJ, Cidade Universitária, Rio de Janeiro, RJ, CEP 21941-590, Brazil.
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Cayre M, Malaterre J, Strambi C, Charpin P, Ternaux JP, Strambi A. Short- and long-chain natural polyamines play specific roles in adult cricket neuroblast proliferation and neuron differentiation in vitro. JOURNAL OF NEUROBIOLOGY 2001; 48:315-24. [PMID: 11500844 DOI: 10.1002/neu.1060] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
In the house cricket (Acheta domesticus) mushroom bodies, neurogenesis still occurs during adulthood. Using in vitro approaches, the respective roles of natural polyamines in neurogenesis were examined. Mushroom body neuroblast proliferation was assayed in organotypic culture using 5-bromo, 2'-deoxyuridine labeling. The number of labeled cells was significantly increased when putrescine was added to culture medium, whereas spermidine and spermine supplementation did not alter cell proliferation. Conversely, in vitro morphometric studies on mushroom body neurons cultured in a defined medium showed that putrescine addition failed to alter any morphological character of these interneurons, whereas addition of the long-chain polyamines, spermidine and spermine, stimulated neuron differentiation. These two polyamines significantly increased total neurite length; moreover, spermidine-treated cells exhibited more branches than the controls. The present data demonstrate that putrescine has a mitogenic effect on mushroom body neuronal precursors, and that spermidine and spermine, which failed to induce neuroblast proliferation, act on neuronal differentiation, inducing neurite outgrowth. Our results indicate that short- and long-chain polyamines play specific roles during neurogenesis, and provide a basis for further studies on neuronal precursor proliferation and differentiation.
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Affiliation(s)
- M Cayre
- Laboratoire de Neurobiologie, CNRS, 31 Chemin Joseph Aiguier, 13402 Marseille cedex 20, France.
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Kogan PH, Hagedorn HH. Polyamines, and effects from reducing their synthesis during egg development in the yellow fever mosquito, Aedes aegypti. JOURNAL OF INSECT PHYSIOLOGY 2000; 46:1079-1095. [PMID: 10817834 DOI: 10.1016/s0022-1910(99)00084-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Development of eggs after a blood meal in the yellow fever mosquito Aedes aegypti involves hormonal changes, synthesis of nucleic acids, activation of the digestive enzyme trypsin, and production of the yolk protein vitellogenin. Polyamines have been implicated in growth processes and were here examined for possible involvement during egg development. The data suggest that polyamines are important for normal vitellogenesis in the mosquito. Polyamine levels and activities of ornithine decarboxylase and S-adenosylmethionine decarboxylase, key enzymes in the polyamine pathway, were determined in the fat body for two days after a blood meal. During the time that the macromolecules required for vitellogenesis were being synthesized, polyamine levels increased as did the activities of their rate-limiting enzymes. Administration of suicide inhibitors of ornithine decarboxylase, alpha-difluoromethylornithine (DFMO) and alpha-monofluoromethyldehydroornithine methylester (MDME), limited increased polyamine levels and disrupted macromolecular syntheses, particularly during the first twenty-four hours after blood feeding. Specific metabolic processes reduced by DFMO included trypsin activity, and production of RNA, DNA and vitellogenin. MDME had differential effects on transcription of some mRNA species made after an oogenic meal. The level of actin mRNA was not affected by inhibiting polyamine synthesis, but the mRNA levels of vitellogenin, trypsin, and the vitelline membrane protein were decreased. Adding polyamines to a meal containing DFMO or MDME partially reversed the effects of these inhibitors. Increases in spermidine and spermine were associated with these reversals.
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Affiliation(s)
- PH Kogan
- Department of Entomology, Cornell University, Ithaca, NY, USA
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Fialho E, Masuda H, Silva-Neto MA. Protein phosphorylation during Rhodnius prolixus embryogenesis: protein kinase casein kinase II activity. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 1999; 29:215-223. [PMID: 10319435 DOI: 10.1016/s0965-1748(98)00129-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Protein kinase casein kinase II (CK II) activity was assayed during Rhodnius prolixus embryogenesis. Vitellin (VT) is the main endogenous substrate during the whole development. It is maximally phosphorylated at the third day of embryogenesis by CK II and then its phosphorylation decreases to a basal level by the time of first instar eclosion. When dephosphorylated casein was used as an exogenous substrate a different profile of enzyme activity was obtained. CK II activity increases on day 1 after fertilization and reaches a plateau on day 7 and its activity remains elevated until eclosion. Extracts obtained from oocytes or from 3-day old eggs were fractionate through gel filtration chromatography. CK II activity was assayed in each fraction and the enzyme obtained from the 3-day old eggs was shown to be three times more active than that obtained from oocytes, although the amount of enzyme present in the fractions was the same. These enriched CK II fractions were assayed against different effectors, such as: cAMP, H-8, H-89, calphostin C, sphingosine, polylysine and heparin. Heparin was the most effective one. When CK II activity was assayed in non-fertilized eggs, no activation of the enzyme was observed when compared to fertilized eggs. These data indicate that CK II is activated in a fertilization dependent process. The decrease in CK II activity against VT coincides with the beginning of VT proteolysis processing suggesting a possible relationship between protein phosphorylation and yolk degradation.
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Affiliation(s)
- E Fialho
- Departamento de Nutrição Básica e Experimental, Universidade Federal do Rio de Janeiro, UFRJ, Brazil.
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Birnbaum M, van Zundert B, Vaughan P, Whitmarsh A, van Wijnen A, Davis R, Stein G, Stein J. Phosphorylation of the oncogenic transcription factor interferon regulatory factor 2 (IRF2) in vitro and in vivo. J Cell Biochem 1997. [DOI: 10.1002/(sici)1097-4644(19970801)66:2<175::aid-jcb5>3.0.co;2-n] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Cayre M, Strambi C, Tirard A, Renucci M, Charpin P, Augier R, Strambi A. Effects of juvenile hormone on polyamines of the fat body and neural tissue of the cricket Acheta domesticus. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/0300-9629(95)00006-s] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Song Q, Combest WL, Gilbert LI. Spermine and polylysine enhanced phosphorylation of calmodulin and tubulin in an insect endocrine gland. Mol Cell Endocrinol 1994; 99:1-10. [PMID: 8187951 DOI: 10.1016/0303-7207(94)90139-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Spermine-stimulated and heparin-inhibited phosphorylation of both exogenous casein and endogenous protein substrates of the prothoracic gland were measured in prothoracic gland cytosolic fractions from fifth instar larvae and early pupae of the tobacco hornworm, Manduca sexta. The results reveal a striking increase in casein kinase II (CKII) activity, i.e. approximately 3-fold above basal level in the presence of 5 mM spermine, with the highest activity exhibited by gland fractions from day 0-2 larvae, newly pupated animals and day 1 pupae. These results were verified by the results from Western blot analysis using a CKII alpha-subunit specific antibody and a 10 a.a. synthetic peptide that is a specific substrate for CKII. Several endogenous proteins were found to be substrates for CKII when assayed in the presence of spermine or polylysine. A 19 kDa peptide was shown to be calmodulin (CaM) by using the purified Manduca brain CaM as an indicator, and was only phosphorylated in the presence of polylysine. A 52 kDa protein was identified as tubulin by immunoprecipitation with a tubulin-specific monoclonal antibody, and was shown to be phosphorylated in the presence of spermine and polylysine. The possible roles of phosphocalmodulin and phosphotubulin are discussed in the context of prothoracic gland function.
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Affiliation(s)
- Q Song
- Department of Biology, University of North Carolina, Chapel Hill 27599-3280
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Silva-Neto MA, Oliveira PL. Protein phosphorylation in Rhodnius prolixus oocytes: identification of a type II casein kinase. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 1993; 23:815-823. [PMID: 11446384 DOI: 10.1016/0965-1748(93)90070-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A protein kinase activity in chorionated oocytes of Rhodnius prolixus phosphorylates in vitro vitellin (VT), the major yolk protein. Phosphatase inhibitors including NaF, sodium vanadate, beta-glycerophosphate and okadaic acid did not alter the protein phosphorylation profile to a visible extent. Among the exogenous protein substrates tested, casein was readily phosphorylated, but histones were not. Several different protein kinase activators, including cAMP, Ca2+ plus calmodulin, Ca2+ plus diolein and phosphatidylserine, were added to the reaction media but spermidine was the only effective one, inducing a 2-fold increase in the phosphorylation of VT. A strong inhibition was obtained with nanomolar levels of heparin. The enzyme could also accept GTP as the phosphate donor instead of ATP. These properties identify the major protein kinase activity as a type II casein kinase (CK II). The pH dependence and the effects of mono- and divalent cations on VT phosphorylation were also studied. Gel filtration revealed only one peak of protein kinase activity, with a molecular mass of 170 K, similar to values previously reported in the literature for CK IIs from other organisms.
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Affiliation(s)
- M A Silva-Neto
- Departmento de Bioquímica Médica, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Combest WL, Gilbert LI. Polyamines modulate multiple protein phosphorylation pathways in the insect prothoracic gland. Mol Cell Endocrinol 1992; 83:11-9. [PMID: 1551468 DOI: 10.1016/0303-7207(92)90190-h] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Multiple endogenous substrates phosphorylated by four distinct protein kinases were identified in particulate and cytosolic fractions from the larval prothoracic gland of the tobacco hornworm, Manduca sexta. Three prominent particulate-associated phosphoprotein substrates (19, 21, and 34 kDa) were of particular interest. The in vitro phosphorylation of the 19 and 21 kDa peptides was markedly enhanced by cAMP, Ca2+/calmodulin, as well as Ca2+/phospholipids, presumably via cAMP-dependent protein kinase (cAMP-PK), Ca2+/calmodulin-dependent protein kinase (Ca2+/CaM-PK), and protein kinase C (PKC), respectively. The polyamine spermine markedly inhibits both PKC- and cAMP-PK-mediated phosphorylation of the 19 and 21 kDa peptides but had no effect on the Ca2+/CaMP-PK-mediated phosphorylation. Spermine also inhibits the phosphorylation of the 34 kDa peptide via cAMP-PK but does not affect PKC-promoted phosphorylation. In contrast to this differential inhibition of phosphorylation by a polyamine, four cytosolic and three particulate-associated peptides from the prothoracic glands undergo enhanced phosphorylation in the presence of spermine, presumably by stimulating casein kinase II activity. Therefore, polyamines appear to have multiple effects on protein phosphorylation pathways in this important endocrine gland, perhaps representing an important new regulatory control mechanism.
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Affiliation(s)
- W L Combest
- Department of Biology, University of North Carolina, Chapel Hill 27599
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Girault JA, Hemmings HC, Zorn SH, Gustafson EL, Greengard P. Characterization in mammalian brain of a DARPP-32 serine kinase identical to casein kinase II. J Neurochem 1990; 55:1772-83. [PMID: 2145398 DOI: 10.1111/j.1471-4159.1990.tb04968.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
DARPP-32, a dopamine- and cyclic AMP-regulated phosphoprotein of Mr 32,000, is phosphorylated in vitro by casein kinase II at a site which is also phosphorylated in intact cells. In the present study, we show that a protein kinase activity, present in caudate-putamen cytosol, phosphorylates DARPP-32 on a seryl residue located on the same thermolytic peptide that is phosphorylated by purified casein kinase II. This DARPP-32 serine kinase was indistinguishable from casein kinase II on the basis of a number of biochemical criteria. Excitotoxic lesions of the caudate-putamen and immunocytochemistry revealed the presence of casein kinase II in the medium-sized striatonigral neurons which are known to contain DARPP-32. Casein kinase II activity was high in all rat brain regions studied, and casein kinase II-like immunoreactivity was detected in most brain neurons, although some neuronal populations (e.g., cortical pyramidal cells and large striatal neurons) were stained more intensely than others. In rat caudate-putamen, 45% of the total casein kinase II activity was in the cytosol and 20% in the synaptosomal fraction. In mouse cerebral cortex and caudate-putamen, casein kinase II activity was high at embryonic day 16, and remained elevated during development. In addition to DARPP-32, several major substrates for casein kinase II were observed specifically in brain, but not in liver extracts. The high activity of casein kinase II in brain from the embryonic period to adult age and the existence of a number of specific substrates suggest that this enzyme may play an important role in both developing and mature brain, possibly in modulating the responsiveness of target proteins to various extracellular signals.
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Affiliation(s)
- J A Girault
- Laboratory of Molecular and Cellular Neuroscience, Rockefeller University, New York, New York
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Birnbaum MJ, Gilbert LI. Juvenile hormone stimulation of ornithine decarboxylase activity during vitellogenesis in Drosophila melanogaster. J Comp Physiol B 1990; 160:145-51. [PMID: 2118148 DOI: 10.1007/bf00300946] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The activity of ornithine decarboxylase (ODC), the rate-limiting enzyme in polyamine biosynthesis, becomes elevated in intact female Drosophila melanogaster shortly after adult eclosion. This activity reaches a peak at 24 h following eclosion, and then drops to lower levels by 48 h. This pattern is not observed in males, consistent with the hypothesis that polyamine synthesis is involved in ovarian maturation in Drosophila. Abdomens isolated within 2 h of adult eclosion do not display elevated ODC activity or ovarian maturation. However, a 250-ng dose of the juvenile hormone analog methoprene (ZR-515) applied in acetone to these abdomens, recovers ovarian maturation and causes a 5-10 fold increase in enzyme activity over controls treated with acetone alone. The same dose of the inactive precursor methyl farnesoate caused no such increase, whereas a 500-ng dose of the newly discovered natural Drosophila JHB3 stimulated a four-fold response. The response to methoprene was dose-dependent, showing stimulatory activity at a dose as low as 10 ng. This stimulation by JHA is rapid, occurring between 1 and 3 h following hormone treatment, reminiscent of JH induction of fat body vitellogenin synthesis in Drosophila. Elevated ODC activity appeared to be localized in the adult fat body. During embryogenesis, ODC activity remained undetectable until just prior to hatching, when a large increase was detected. We postulate that JH may, either directly or indirectly, regulate polyamine biosynthesis in vivo, and that this synthesis may be required for the production of macromolecules during Drosophila vitellogenesis or embryogenesis.
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Affiliation(s)
- M J Birnbaum
- Department of Biology, University of North Carolina, Chapel Hill 27599-3280
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Bloom TJ, Combest WL, Gilbert LI. Spermine stimulation of phosphoprotein dephosphorylation in the brain of Manduca sexta. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0020-1790(90)90018-p] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Qiu TH, Combest WL, Gilbert LI. Characterization of a calcium and diacylglycerol-activated and phospholipid-dependent protein kinase in the pupal brain of the tobacco hornworm, Manduca sexta: The cytosolic enzyme. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0020-1790(90)90061-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Combest WL, Bloom TJ, Gilbert LI. Polyamines differentially inhibit cyclic AMP-dependent protein kinase-mediated phosphorylation in the brain of the tobacco hornworm, Manduca sexta. J Neurochem 1988; 51:1581-91. [PMID: 2844997 DOI: 10.1111/j.1471-4159.1988.tb01128.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The effects of the naturally occurring polyamines spermine and spermidine on phosphorylation promoted by cyclic AMP (cAMP)-dependent protein kinase (PK) (cAMP-PK; EC 2.7.1.37) were studied using the brain of the tobacco hornworm, Manduca sexta. Four particulate-associated peptides (280, 34, 21, and 19 kilodaltons) in day 1 pupal brains are endogenous substrates for a particulate type II cAMP-PK. These phosphoproteins are present in brain synaptosomal, as well as microsomal, particulate fractions but are not present in the cytosol. They are distributed throughout the CNS and PNS and are present in several nonneuronal tissues as well. Phosphorylation of these proteins via cAMP-PK was inhibited markedly by micromolar concentrations of spermine and spermidine. Other particulate-associated peptides phosphorylated via a Ca2+/calmodulin-PK or Ca2+ and cAMP-independent PKs were unaffected by polyamines, whereas the phosphorylation of a 260-kilodalton peptide was markedly enhanced. Spermine did not exert its inhibitory effect indirectly by enhancement of cAMP or ATP hydrolysis or via proteolysis, but its action appears to involve a substrate-directed inhibition of cAMP-PK-promoted phosphorylation as well as enhanced dephosphorylation. Although addition of spermine resulted in marked ribosome aggregation in synaptosomal and microsomal particulate fractions, this phenomenon was not involved in the inhibition of cAMP-PK-promoted phosphorylation.
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Affiliation(s)
- W L Combest
- Department of Biology, University of North Carolina, Chapel Hill 27599-3280
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Birnbaum MJ, Whelan TM, Gilbert LI. Temporal alterations in polyamine content and ornithine decarboxylase activity during the larval-pupal development of Manduca sexta. ACTA ACUST UNITED AC 1988. [DOI: 10.1016/0020-1790(88)90110-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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