Biotechnological aspects of the production of the anticancer drug podophyllotoxin
- 694 Downloads
- 20 Citations
Abstract
The natural lignan podophyllotoxin, a dimerized product of two phenylpropanoid moieties which occurs in a few plant species, is a pharmacologically important compound for its anticancer activities. It is used as a precursor for the chemical synthesis of the anticancer drugs etoposide, teniposide and etopophose. The availability of this lignan is becoming increasingly limited because of the scarce occurrence of its natural sources and also because synthetic approaches for its production are still commercially unacceptable. Biotechnological production using cell culture may be considered as an alternative source. Selection of the best performing cell line, its maintenance and stabilization are necessary prerequisites for its production in bioreactors and subsequent scale-up of the cultivation process to the industrial level. Scale-up of growth and product yield depends on a multitude of factors, such as growth medium, physicochemical conditions, seed inoculum, type of reactor and processing conditions. The composition of the growth medium, elicitors and precursors, etc. can markedly influence the production. Optimum levels of parameters that facilitate high growth and product response in cell suspensions of Podophyllum hexandrum have already been determined by statistical design. P. hexandrum cells have successfully been cultivated in a 3-l stirred-tank bioreactor under low shear conditions in batch and fed-batch modes of operation. The batch kinetic data were used to identify the mathematical model which was then used to develop nutrient-feeding strategies for fed-batch cultivation to prolong the productive log phase of cultivation. An improvement in the production of podophyllotoxin to 48.8 mg l−1 in a cell culture of P. hexandrum was achieved, with a corresponding volumetric productivity of 0.80 mg l−1 day−1, when the reactor was operated in continuous cell-retention mode. Efforts are being made to further enhance its production levels by the development of hairy root culture or by varying the channeling of precursors towards the desired biosynthetic pathway by molecular approaches.
Keywords
Hairy Root Hairy Root Culture Plant Cell Culture Lignan PodophyllotoxinNotes
Acknowledgement
A Fellowship provided by the Council of Scientific & Industrial Research India to S.F. is gratefully acknowledged.
References
- Airi S, Rawal RS, Dhar U, Purohit AN (1997) Population studies on Podophyllum hexandrum Royle—a dwindling medicinal plant of the Himalaya. Plant Genet Resour Newsl 110:20–34Google Scholar
- Alfermann AW, Peterson M (1995) Natural product formation of plant cell biotechnology. Plant Cell Tissue Organ Cult 43:199–205Google Scholar
- Arroo RRJ, Alfermann AW, Medarde M, Petersen M, Pras N, Woolley JG (2002) Plant cell factories as a source for anti-cancer lignans. Phytochem Rev 1:27–35CrossRefGoogle Scholar
- Arumugam N, Bhojawani SS (1990) Somatic embryogenesis in tissue cultures of Podophyllum hexandrum. Can J Bot 68:487–491Google Scholar
- Badhwar RL, Sharma BK (1963) A note on the germination of Podophyllum seeds. Indian For 89:445–447Google Scholar
- Barz W, Daniel S, Hinderer W, Jaques U, Kessmann H, Koster J, Tiemann K (1988) Elicitation and metabolism of phytoalexins in plant cell cultures. In: Pais M, Mavituna F, Novais J (eds) Plant cell biotechnology. (NATO ASI series) Springer, Berlin Heidelberg New York, pp 211–230Google Scholar
- Bedir E, Khan I, Moraes RM (2001) Bioprospecting for podophyllotoxin. In: Janik J, Whipkey A (eds) Trends in new crops and new uses. ASHS, Alexandria, pp 545–549Google Scholar
- Berkowitz DB, Choi S, Maeng JH (2000) Enzyme-assisted asymmetric total synthesis of (−)-podophyllotoxin and (−)-picropodophylline. J Org Chem 65:847–860CrossRefPubMedGoogle Scholar
- Beutner KR (1996) Podophyllotoxin in the treatment of genital warts. In: Eischmann EP (ed) Sexually transmitted diseases: advances and treatment, vol 24. Springer, Berlin Heidelberg New York, pp 211–232Google Scholar
- Bhadula SK, Singh A, Lata H, Kunyal CP, Purohit AN (1996) Genetic resources of Podophyllum hexandrum Royle, an endangered medicinal species from Garhwal Himalaya, India. Int Plant Gen Resour Newsl 106:26–29Google Scholar
- Bjorneboe O, Moen F, Nygaard H, Haavik TK, Svensson B (1998) CPH-82 (Reumacon), versus auranofin (Ridaura): a 36-week study of their respective onset of action rates in RA. Scand J Rheumatol 27:26–31CrossRefPubMedGoogle Scholar
- Bolwell GP, Bozak K, Zimmerlin A (1994) Plant cytochrome P450. Phytochemistry 37:1491–1506CrossRefPubMedGoogle Scholar
- Broomhead AJ, Dewick PM (1990a) Tumour-inhibitory aryltetralin lignans in Podophyllum versipelle, Diphylleia cymosa and Diphylleia grayi. Phytochemistry 29:3831–3837CrossRefGoogle Scholar
- Broomhead AJ, Dewick PM (1990b) Aryltetralin lignans in Linum flavum and Linum capitatum. Phytochemistry 29:3839–3844CrossRefGoogle Scholar
- Broomhead AJ, Dewick PM (1991) Biotransformation of Podophyllum lignans in cell suspension cultures of Forsythia intermedia. Phytochemistry 30:1511–1517CrossRefGoogle Scholar
- Buitelaar RM, Tramper J (1992) Strategies to improve the production of secondary metabolites with plant cell cultures: a literature review. J Biotechnol 23:111–143CrossRefGoogle Scholar
- Bush EJ, Jones DW (1995) Asymmetric total synthesis of (−)-podophyllotoxin. J Chem Soc Perkin Trans 1:151–155Google Scholar
- Canel C, Moraes RM, Dayan FE, Ferreira D (2000) Molecules of interest podophyllotoxin. Phytochemistry 54:115–120CrossRefPubMedGoogle Scholar
- Chattopadhyay S, Srivastava AK, Bhojwani SS, Bisaria VS (2001) Development of suspension culture of Podophyllum hexandrum for the production of podophyllotoxin. Biotechnol Lett 23:2063–2066CrossRefGoogle Scholar
- Chattopadhyay S, Srivastava AK, Bisaria VS (2002a) Optimization of culture parameters for production of podophyllotoxin in suspension culture of Podophyllum hexandrum. Appl Biochem Biotechnol 102/103:381–393CrossRefGoogle Scholar
- Chattopadhyay S, Srivastava AK, Bhojwani SS, Bisaria VS (2002b) Production of podophyllotoxin by plant cell cultures of Podophyllum hexandrum in bioreactor. J Ferment Bioeng 93:215–220CrossRefGoogle Scholar
- Chattopadhyay S, Bisaria VS, Srivastava AK (2003a) Enhanced production of podophyllotoxin by Podophyllum hexandrum using in situ cell retention bioreactor. Biotechnol Prog 19:1026–1028CrossRefPubMedGoogle Scholar
- Chattopadhyay S, Bisaria VS, Bhojwani SS, Srivastava AK (2003b) Enhanced production of podophyllotoxin by fed-batch cultivation of Podophyllum hexandrum. Can J Chem Eng 81:1–8CrossRefGoogle Scholar
- Chattopadhyay S, Mehra RS, Srivastava AK, Bhojwani SS, Bisaria VS (2003c) Effect of major nutrients on podophyllotoxin production in Podophyllum hexandrum suspension cultures. Appl Microbiol Biotechnol 60:541–546PubMedGoogle Scholar
- Choudhary DK, Kaul BL, Khan S (1998) Cultivation and conservation of Podophyllum hexandrum—an overview. J Med Aromat Plant Sci 20:1071–1073Google Scholar
- DiCosmo F, Misawa M (1995) Plant cell and tissue culture: alternatives for metabolite production. Biotechnol Adv 13:425–435CrossRefPubMedGoogle Scholar
- DiCosmo F, Tallevi SG (1985) Plant cell cultures and microbial insult: interactions with biotechnological potential. Trends Biotechnol 3:110–111Google Scholar
- DiCosmo F, Quesne A, Misawa M, Tallevi SG (1987) Increased synthesis of ajamalicine and catharanthine by cell suspension cultures of Catharanthus roseus in response to fungal culture filtrates. Appl Microbiol Biotechnol 14:101–106Google Scholar
- Dinkova-Kostova AT, Gang DR, Davin LB, Bedgar DL, Chu A, Lewis NG (1996) (+)-Pinoresinol/(+)-lariciresinol reductase from Forsythia intermedia protein purification, cDNA cloning, heterologous expression and comparison to isoflavone reductase. J Biol Chem 271:29473–29482CrossRefPubMedGoogle Scholar
- Dixon RA (1999) Plant natural products: the molecular genetic basis of biosynthetic diversity. Curr Opin Biotechnol 10:192–197CrossRefPubMedGoogle Scholar
- Dornenburg H, Knorr D (1997) Challenges and opportunities for metabolite production from plant cell and tissue cultures. Food Technol 51:50–54Google Scholar
- Eilert U (1987) Elicitation: methodology and aspects of application. In: Constabel F, Vasil I (eds) Cell culture and somatic cell genetics of plants, vol 4. Academic, San Diego, pp 153–196Google Scholar
- Empt U, Alfermann AW, Pras N, Peterson M (2000) The use of plant cell cultures for the production of podophyllotoxin and related lignans. J Appl Bot 74:145–150Google Scholar
- Endo T, Yamada Y (1985) Alkaloid production in cultured roots of three species of Duboisia. Phytochemistry 24:1233–1236CrossRefGoogle Scholar
- Endress R (1994) Plant cell biotechnology. Springer, Berlin Heidelberg New YorkGoogle Scholar
- Fay DA, Ziegler HW (1985) Botanical source differentiation of podophyllum resin by high performance liquid chromatography. J Liq Chromatogr 8:1501–1506Google Scholar
- Figgitt DP, Denever SP, Dewick PM, Jackson DE, Willians P (1989) Topoisomerase II: a potential target for novel antifungal agents. Biochem Biophys Res Commun 160:257–262PubMedGoogle Scholar
- Foster S (1993) Medicinal plant conservation and genetic resources: examples from the temperate northern hemisphere. Acta Hortic 330:67–73Google Scholar
- Fowler MW, Stafford A (1992) Plant cell culture process systems and product synthesis. In: Flowler MW, Warren GS (eds) Plant biotechnology. Pergamon, Oxford, pp 79–98Google Scholar
- Fujita M (1988) Industrial production of shikonin and berberine. Applications of plant cell and tissue culture. (Ciba foundation symposium 137) Wiley, New York, pp 228–238Google Scholar
- Funk C, Gugler R, Brodelius P (1987) Increased secondary metabolite formation in plant cell suspension cultures after treatment with a yeast carbohydrate preparation (elicitor). Phytochemicals 26:401–405CrossRefGoogle Scholar
- Furze JM, Rhodes MJC, Parr AJ, Robins RJ, Whitehead IM, Threlfall DR (1991) Abiotic factors elicit sesquiterpenoid phytoalexin production but not alkaloid production in transformed root cultures of Datura stramonium. Plant Cell Rep 10:111–114Google Scholar
- Giri A, Narasu ML (2000) Transgenic hairy roots: recent trends and applications. Biotechnol Adv 18:1–22CrossRefPubMedGoogle Scholar
- Giri A, Giri CC, Dhingra V, Narasu ML (2001) Enhanced podophyllotoxin production from Agrobacterium rhizogenes transformed cultures of Podophyllum hexandrum. Nat Prod Lett 15:229–235PubMedGoogle Scholar
- Gordaliza M, Faircloth GT, Castro MA, Miguel del Corral JM, López-Vázquez ML, San Feliciano A (1996) Immunosuppressive cyclolignans. J Med Chem 39:2865–2868CrossRefPubMedGoogle Scholar
- Greenwald RB, Conover CD, Pendri A, Choe YH, Martinez A, Wu D, Guan S, Yao Z, Shum KL (1999) Drug delivery of anticancer agents: water soluble 4-poly (ethylene glycol) derivatives of the lignan, azadirachtin. J Controlled Release 61:281–294CrossRefGoogle Scholar
- Hande KR (1998) Etoposide: four decades of development of a topoisomerase II inhibitor. Eur J Cancer 34:1514–1521CrossRefPubMedGoogle Scholar
- Heyenga AG, Lucas JA, Dewick PM (1990) Production of tumor-inhibitory lignans in callus cultures of Podophyllum hexandrum. Plant Cell Rep 9:382–385Google Scholar
- Holthuis JJM (1988) Etoposide and teniposide: Bioanalysis, metabolism and clinical pharmokinetics. Pharm Weekbl 10:101–116Google Scholar
- Huang TS, Shu CH, Shih YL, Huang HC, Su YC, Chao Y, Yang WK, Wang-Peng J (1996) Protein tyrosine phosphatase activities are involved in apoptotic cancer cell death induced by GL 331, a new homolog of etoposide. Cancer Lett 110:77–85CrossRefPubMedGoogle Scholar
- Husemann W, Callies R, Leibfritz D (1992) External pH modifies the intracellular pH and the mode of photosynthetic CO2 assimilation in photoautotrophic cell suspension cultures of Chenopodium rubrum L. Bot Acta 105:116Google Scholar
- Imbert TF (1998) Discovery of podophyllotoxins. Biochimie 80:207–222CrossRefPubMedGoogle Scholar
- Jackson DE, Dewick PM (1984a) Aryltetralin lignans from Podophyllum hexandrum and Podophyllum peltatum. Phytochemistry 1147:1152Google Scholar
- Jackson DE, Dewick PM (1984b) Biosynthesis of Podophyllum lignans-I. Cinnamic acid precursors of podophyllotoxin in Podophyllum hexandrum. Phytochemistry 23:1029–1035CrossRefGoogle Scholar
- Johnson RS, Ravishankar GA, Venkataraman LV (1991) Elicitation of capsaicin production in freely suspended cells and immobilised cell cultures of Capsicum frutescence. Food Biotechnol 5:197–205Google Scholar
- Kadkade PG (1981) Formation of podophyllotoxin by Podophyllum peltatum tissue cultures. Naturwissenschaften 68:481–482PubMedGoogle Scholar
- Kadkade PG (1982) Growth and podophyllotoxin production in callus tissues of Podophyllum peltatum. Plant Sci Lett 25:107–115CrossRefGoogle Scholar
- Kalil SJ, Maugeri F, Rodrigues MI (2000) Response surface analysis and simulation as a tool for bioprocess design and optimization. Process Biochem 35:539–550CrossRefGoogle Scholar
- Kamil WM, Dewick PM (1986) Biosynthesis of lignans α- and β-peltatin. Phytochemistry 25:2089–2092CrossRefGoogle Scholar
- Ketchum REB, Gibson DM, Gallo LG (1995) Media optimization for maximum biomass production in cell cultures of pacific yew. Plant Cell Tissue Organ Cult 42:185–193Google Scholar
- Kieran PM, Malone DM, MacLoughlin PF (2000) Effects of hydrodynamic and interfacial forces on plant cell suspension systems. Adv Biochem Eng Biotechnol 139:177Google Scholar
- Kobayashi Y, Fukui H, Tabata M (1991) Effect of carbon dioxide and ethylene on berberine production and cell browning in Thalictrum minus cell cultures. Plant Cell Rep 9:496–499Google Scholar
- Konuklugil B (1996a) Aryltetralin lignans from genus Linum. Fitoterapia 67:379–381Google Scholar
- Konuklugil B (1996b) Investigation of podophyllotoxin in some plants in Lamiaceae using HPLC. J Fac Pharm Ankara 25:23–27Google Scholar
- Konuklugil B, Schimdt TJ, Alfermann AW (1999) Accumulation of aryltetralin lactone lignans in cell suspension cultures of Linum nodiflorum. Planta Med 65:587–588Google Scholar
- Kreis W, Reinhard E (1989) The production of secondary metabolites by plant cells cultivated in bioreactors. Planta Med 55:409–416Google Scholar
- Krishnamurthy T, Karira GV, Sharma BK, Bhatia K (1965) Cultivation and exploitation of Podophyllum hexandrum Royle (syn. P. emodi wall Ex Hook f Thomas). Indian For 91:470–475Google Scholar
- Kuhnt M, Rimpler H, Henrich M (1994) Lignans and other compounds from the mixed Indian medicinal plant Hyptis verticillata. Phytochemistry 36:485–489CrossRefGoogle Scholar
- Kuhlmann S, Kranz K, Lücking B, Alfermann AW, Petersen M (2002) Aspects of cytotoxic lignan biosynthesis in suspension cultures of Linum nodiflorum. Phytochem Rev 1:37–43CrossRefGoogle Scholar
- Kupchan SM, Hemingway JC, Knox JR (1965) Tumour inhibitors VII podophyllotoxin, the active principle of Juniperus verginiana. J Pharm Sci 54:659–660PubMedGoogle Scholar
- Kutney JP, Arimoto M, Hewitt GM, Jarvis TC, Sakata K (1991) Studies with plant cell cultures of Podophyllum peltatum L. I. Production of podophyllotoxin, deoxypodophyllotoxin, podophyllotoxone, and 4′-demethylpodophyllotoxin. Heterocycle 32:2305–2309Google Scholar
- Latge JP, Moletta R (1988) Biotechnology. In: Sampson RA, Evans HC, Latge JP (eds) Atlas of entomopathogenic fungi. Springer, Berlin Heidelberg New York, pp 152–164Google Scholar
- Leander K, Rosen B (1988) Medicinal used for podophyllotoxin. US patent 4,788,216Google Scholar
- Lerndal T, Svensson B (2000) A clinical study of CPH 82 vs methotrexate in early rheumatoid arthritis. Rheumatology 39:316CrossRefPubMedGoogle Scholar
- Lewis NG, Davin LB, Dinkova-Kostova AT, Ford JD, Fujita M, Gang DR, Sarkanen S (1997) Recombinant pinoresinol/lariciresinol reductase, recombinant dirigent protein and methods of use. USA patent 09/475,316Google Scholar
- Lin H, Kwok KH, Doran PM (2003) Production of podophyllotoxin using cross-species coculture of Linum flavum hairy roots and Podophyllum hexandrum cell suspensions. Biotechnol Prog 19:1417–1426CrossRefPubMedGoogle Scholar
- MacRae WD, Towers GHN (1984) Biological activities of lignans. Phytochemistry 23:1207–1220CrossRefGoogle Scholar
- Meijer W (1974) Podophyllum peltatum—Mayapple a potential new cash crop plant of eastern North America. Econ Bot 28:68–72Google Scholar
- Memelink J, Kijne JW, van der Heijden R, Verpoorte R (2001) Genetic modification of plant secondary metabolite pathways using transcriptional regulators. Adv Biochem Eng Biotechnol 72:103–125PubMedGoogle Scholar
- Molog MG, Empt U, Petersen M, van Uden W, Pras N, Alfermann AW (2001) Deoxypodophyllotoxin 6-hydroxylase, a cytochrome P450 monooxygenase from cell cultures of Linum flavum involved in biosynthesis of cytotoxic lignans. Planta 214:288–294PubMedGoogle Scholar
- Moraes-Cerdeira RM, Burandt CL Jr, Bastos JK, Nanayakkara NPD, McChesney JD (1998) In vitro propagation of Podophyllum peltatum. Planta Med 64:42–46Google Scholar
- Moraes-Cerdeira RM, Bedir E, Barrett H, Burandt C Jr, Canel C, Khan I (2001) Evaluation of Podophyllum peltatum accessions for podophyllotoxin production. Planta Med 68:341–344Google Scholar
- Moraes-Cerdeira RM, Burandt C, Ganzera M, Li XL, Khan I, Canel C (2002a) The American mayapple revisited—Podophyllum peltatum—still a potential cash crop? Econ Bot 54:471–476Google Scholar
- Moraes-Cerdeira RM, Dayan FE, Bedir E, Barrett H, Burandt C Jr, Canel C (2002b) The lignans of Podophyllum. In: Rahman AU (ed) Studies in natural product chemistry, vol 26. Elsevier, New York, pp 149–182Google Scholar
- Moraes-Cerdeira RM, Lata H, Bedir E, Maqbool M, Cushman K (2002c) American May apple and its potential for podophyllotoxin production. In: Janick J, Whipkey A (eds) Trends in new crops and new uses. ASHS, Alexandria, pp 527–532Google Scholar
- Muranaka T, Miyata M, Kazutaka I, Tachibana S (1998) Production of podophyllotoxin in Juniperus chinensis callus cultures treated with oligosaccharides and a biogenetic precursor. Phytochemistry 49:491–496CrossRefGoogle Scholar
- Nadeem M, Palni LMS, Purohit AN, Pandey H, Nandi SK (2000) Propagation and conservation of Podophyllum hexandrum Royle: an important medicinal herb. Biol Conserv 92:121–129CrossRefGoogle Scholar
- Nautiyal MC, Rawat AS, Bhadula SK, Purohit AN (1987) Seed germination in Podophyllum hexandrum. Seed Res 16:206–209Google Scholar
- Oliva A, Moraes RM, Watson SB, Duke SO, Dayan FE (2002) Aryltetralin lignans inhibit plant growth by affecting the formation of mitotic microtubular organizing centers. Pest Biochem Physiol 72:45–54CrossRefGoogle Scholar
- Oostdam A, Mol JNM, Plas LHW van der (1993) Establishment of hairy root cultures of Linum flavum producing the lignan 5-methoxypodophyllotoxin. Plant Cell Rep 12:474–477Google Scholar
- Pagani O, Zucchetti M, Sessa C, Jong J de, D’Incalci M, De Fusco M, Kaeser-Fromhlich A, Hanauske A, Cavalli F (1996) Clinical and pharmacokinetic study of oral NK611, a new podophyllotoxin derivative. Cancer Chemother Pharmacol 38:541–547CrossRefPubMedGoogle Scholar
- Payne GF, Bringi V, Prince C, Shuler ML (1991) Plant cell and tissue culture in liquid systems. Hanser, Munich, pp 1–10Google Scholar
- Pelter A (1986) Lignans: some properties and syntheses. Rec Adv Phytochem 20:201–241Google Scholar
- Pelter A, Ward RS, Ma WY (1994) An asymmetric synthesis of isopodophyllotoxin. J Nat Prod 57:1598–1602Google Scholar
- Peterson M, Alfermann AW (2001) The production of cytotoxic lignans by plant cell cultures. Appl Microbiol Biotechnol 55:135–142CrossRefPubMedGoogle Scholar
- Plackett RL, Burman JP (1946) The design of optimum multifactorial experiments. Biometrika 33:305–325Google Scholar
- Potin P, Bouarab K, Küpper F, Kloareg B (1999) Oligosaccharide recognition signals and defence reactions in marine plant–microbe interactions. Curr Opin Microbiol 2:276–283CrossRefPubMedGoogle Scholar
- Pras N, Hesselink PGM, ten-Tusscher J, Malingre TM (1989) Kinetic aspects of bioconversion of l-tyrosin into L-DOPA by cell of Mucuna prurience L entrapped in different matrices. Biotechnol Bioeng 34:214–222Google Scholar
- Pras N, Woerdenbach HJ, Uden W van (1995) The power of plant enzymes in bioconversions. Agric Biotechnol News Inform 7:231N–243NGoogle Scholar
- Pugh N, Khan I, Moraes RM, Pasco D (2001) Podophyllotoxin lignans enhance IL-1 but suppress TNF-a mRNA expression in LPS- treated monocytes. Immunopharmacol Immunotoxicol 23:83–95CrossRefPubMedGoogle Scholar
- Rajendran L, Suvarnalatha G, Ravishankar GA, Venkataraman LV (1994) Enhancement of anthocyanin production in callus cultures of Daucus carota L. under influence of fungal elicitors. Appl Microbiol Biotechnol 42:227–231CrossRefGoogle Scholar
- Ramachandra Rao S, Sarada R, Ravishankar GA (1996) Phycocyanin, a new elicitor of capsaicin and anthocyanin accumulation in plant cell cultures. Appl Microbiol Biotechnol 46:619–621CrossRefGoogle Scholar
- Ramos AC, Paláez R, López JL, Caballero E, Medarde M, San Feliciano A (2001) Heterolignanolides. Furo- and thieno-analogues of podophyllotoxin and thuriferic acid. Tetrahedron 57:3963–3977CrossRefGoogle Scholar
- Ravishankar GA, Ramachandra Rao S (2000) Biotechnological production of phyto-pharmaceuticals. J Biochem Mol Biol Biophys 4:73–102Google Scholar
- Ravishankar GA, Venkataraman LV (1990) Food applications of plant cell cultures. Curr Sci 59:914–920Google Scholar
- Ravishankar GA, Venkataraman LV (1993) Role of plant cell culture in food biotechnology: current trends, limitations and future prospects. In: Prakash J, Pierik RLM (eds) Plant biotechnology: commercial prospects and problems. Oxford IBH, New Delhi, pp 255–274Google Scholar
- Ravishankar GA, Bhyalakshmi N, Ramachandra Rao S (1999) Production of food additives. In: Ramawat KG, Merillon JM (eds) Biotechnology: secondary metabolites. Oxford IBH, New Delhi, pp 89–110Google Scholar
- Raβmann I, Thodtmann OR, Mross M, Huttmann A, Berdel WE, Manegold CH, Fiebig HH, Kaeser-Frohlich A, Burk KI, Hanauske AR (1999) Phase I clinical and pharmacokinetic trial of the podophyllotoxin derivative NK 611 administered as intravenous short infusion. Invest New Drugs 18:319–324Google Scholar
- Robbins MP, Hartnoll J, Morris P (1991) Phenylpropanoid defence responses in transgenic Lotus corniculatus. I. Glutathione elicitation of isoflavan phytoalexins in transformed root cultures. Plant Cell Rep 10:59–62Google Scholar
- Sackett DL (1993) Podophyllotoxin, steganacin and combretastatin: natural products that bind at the colchicine site of tubulin. Pharmacol Ther 59:163–228CrossRefPubMedGoogle Scholar
- Saito K, Yamazaki M, Murakoshi I (1992) Transgenic medicinal plants: agrobacterium-mediated foreign gene transfer and production of secondary metabolites. J Nat Prod 55:149–162PubMedGoogle Scholar
- San Feliciano A, Del Corral JMM, Gordaliza M, Castro MA (1989a) Acetylated lignans from Juniperus sabinai. Phytochemistry 28:659–660CrossRefGoogle Scholar
- San Feliciano A, Medarde M, Lopez JL, Puebla P, Del Corral JMM, Barrero AF (1989b) Lignans from Juniperus thurifera. Phytochemistry 28:2863–2866CrossRefGoogle Scholar
- Schacter L (1996) Etoposide phosphate: what, why, where and how? Semin Oncol 23:1–7Google Scholar
- Schmitt J, Petersen M (2002) Influence of methyl jasmonate and coniferyl alcohol on pinoresinol and matairesinol accumulation in a Forsythia intermedia suspension culture. Plant Cell Rep 20:885–889CrossRefGoogle Scholar
- Schuler MA (1996) Plant cytochrome P450 monooxygenases. Crit Rev Plant Sci 15:235–284Google Scholar
- Scragg AH (1997) The production of aromas by plant cell cultures. In: Scheper T (ed) Advances in biochemical engineering/biotechnology, vol 55. Springer, Berlin Heidelberg New York, pp 239–263Google Scholar
- Sharma TR, Singh BM, Sharma NR, Chauhan RS (2000) Identification of high podophyllotoxin producing biotypes of Podophyllum hexandrum Royle from north-western Himalaya. J Plant Biochem Biotechnol 9:49–51Google Scholar
- Slevin M (1991) The clinical pharmacology of etoposide. Cancer 67:319–329PubMedGoogle Scholar
- Smollny T, Wichers H, de-Rijk T, van-Zwam A, Shahsavari A, Alfermann AW (1992) Formation of lignans in suspension cultures of Linum album. Planta Med 58:A622–A624Google Scholar
- Smollny T, Wichers H, Kalenberg S, Shahsavari A, Petersen M, Alfermann AW (1998) Accumulation of podophyllotoxin and related lignans in cell suspension cultures of Linum album. Phytochemistry 48:575–579CrossRefGoogle Scholar
- Stahelin HF, Wartburg AV von (1991) The chemical and biological route from podophyllotoxin glucoside to etoposide. Cancer Res 51:5–15PubMedGoogle Scholar
- Stockigt J, Obitz P, Flakenhagen H, Lutterbach R, Endress R (1995) Natural products and enzymes from plant cell cultures. Plant Cell Tissue Organ Cult 43:914–920Google Scholar
- Troup RS (1915) A note on cultivation of Podophyllum emodi. Indian For 41:361–365Google Scholar
- Uden W van (1993) The biotechnological production of podophyllotoxin and related cytotoxic lignans by plant cell cultures. Pharm World Sci 15:41–43Google Scholar
- Uden W van, Pras N, Visser JF, Malingre TM (1989) Detection and identification of podophyllotoxin produced by cell cultures derived from Podophyllum hexandrum Royle. Plant Cell Rep 8:165–168Google Scholar
- Uden W van, Pras N, Malingre TM (1990a) On the improvement of the podophyllotoxin production by phenylpropanoid precursor feeding to cell cultures of Podophyllum hexandrum Royle. Plant Cell Tissue Organ Cult 23:217–224Google Scholar
- Uden W van, Pras N, Malingre TM (1990b) The accumulation of podophyllotoxin-β-d-glucoside by cell suspension cultures derived from the conifer Callitris drummondii. Plant Cell Rep 9:257–260Google Scholar
- Uden W van, Pras N, Batterman S, Viser JF, Malingre TM (1990c) The accumulation and isolation of coniferin from a high-producing cell suspension of Linum flavum L. Planta 183:25–30Google Scholar
- Uden W van, Pras N, Vossebeld EM, Mol JNM, Malingre TM (1990d) Production of 5-methoxypodophyllotoxin in cell suspension cultures of Linum flavum L. Plant Cell Tissue Organ Cult 20:81–87Google Scholar
- Uden W van, Pras N, Homan B, Malingre TM (1991) Improvement of the production of 5-methoxypodophyllotoxin using a new selected root culture of Linum flavum L. Plant Cell Tissue Organ Cult 27:115–121Google Scholar
- Uden W van, Homan B, Woerdenbag HJ, Pras N, Malingre TM, Wichers HJ (1992) Isolation, purification and cytotoxicity of 5-methoxypodophyllotoxin, a lignan from a root culture of Linum flavum. J Nat Prod 55:102–110PubMedGoogle Scholar
- Uden W van, Bouma AS, Bracht-Waker JF, Middel O, Wichers HJ, De-Waard P, Woerdenbag HJ, Kellogg RM, Pras N (1995) The production of podophyllotoxin and its 5-methoxy derivative through bioconversion of cyclodextrin-complexed desoxypodophyllotoxin by plant cell cultures. Plant Cell Tissue Organ Cult 42:73–79Google Scholar
- Ushiyama K (1991) Komamine A, Misawa M, DiCosmo F (eds) Plant cell culture in Japan. CMC, Tokyo, pp 92–98Google Scholar
- Utsugi T, Shibata J, Sugimoto Y, Aoyagi K, Wierzba K, Kobunai T, Terada T, Oh-hara T, Tsuruo T, Yamada Y (1996) Antitumour activity of a novel podophyllotoxin derivative (Top-53) against lung cancer and lung metastic cancer. Cancer Res 56:2809–2814PubMedGoogle Scholar
- Verpoorte R, Contin A, Memelink J (2002) Biotechnology for the production of plant secondary metabolites. Phytochem Rev 1:13–25CrossRefGoogle Scholar
- Ward RS (1982) The synthesis of lignans and neolignans. Chem Soc Rev 11:75–125CrossRefGoogle Scholar
- Ward RS (1997) Lignans, neolignans and related products. Nat Prod Rep 14:43–74Google Scholar
- Ward RS (1999) Lignans, neolignans and related products. Nat Prod Rep 16:75–96CrossRefGoogle Scholar
- Wichers HJ, Versluis-de-Haan GG, Marsman JW, Harkes MP (1991) Podophyllotoxin related lignans in plants and cell cultures of Linum flavum. Phytochemistry 30:3601–3604CrossRefGoogle Scholar
- Woerdenbag HJ, Uden W van, Frijlink HW, Lerk CF, Pras N, Malingre TM (1990) Increased podophyllotoxin production in Podophyllum hexandrum cell suspension cultures after feeding coniferyl alcohol as a beta-cyclodextrin complex. Plant Cell Rep 9:97–100Google Scholar
- Xia ZQ, Costa MA, Proctor J, Davin LB, Lewis NG (2000) Dirigent-mediated podophyllotoxin biosynthesis in Linum flavum and Podophyllum peltatum. Phytochemistry 55:537–549CrossRefPubMedGoogle Scholar
- Yu P, Wang L, Chen Z (1991) A new podophyllotoxin type lignan from Dysosma versipellis var. tomentosa. J Nat Prod 54:1422–1424Google Scholar
- Zhong JJ (2002) Plant cell culture for production of paclitaxel and other taxanes. J Biosci Bioeng 94:591–599Google Scholar