Team:ETH Zurich/Motivation
From 2012.igem.org
Line 12: | Line 12: | ||
[[Image:pink_mirror.jpg|right|thumb|150px|''E.coli''pse - intelligent sun protection aims to prevent sunburn and as a consequence of more protection ultimately reduce skin cancer incidence]] | [[Image:pink_mirror.jpg|right|thumb|150px|''E.coli''pse - intelligent sun protection aims to prevent sunburn and as a consequence of more protection ultimately reduce skin cancer incidence]] | ||
Sun burn and skin damage from UV radiation are important issues when one exposes oneself to sun radiation for a tanning session without applying proper sun protection. Furthermore, UV radiation is always present on sunny days, but often no sun protection is applied before exposing oneself to sunlight. With our project''' ''E.coli''pse, intelligent sun protection, we want to create a sun protection where no one has to worry anymore if he is protected from sun or not since on exposure to sunlight, a protection molecule and a warning signal in form of a pigment are produced.''' | Sun burn and skin damage from UV radiation are important issues when one exposes oneself to sun radiation for a tanning session without applying proper sun protection. Furthermore, UV radiation is always present on sunny days, but often no sun protection is applied before exposing oneself to sunlight. With our project''' ''E.coli''pse, intelligent sun protection, we want to create a sun protection where no one has to worry anymore if he is protected from sun or not since on exposure to sunlight, a protection molecule and a warning signal in form of a pigment are produced.''' | ||
+ | |||
==== Skin Cancer protection ==== | ==== Skin Cancer protection ==== | ||
Among all cancers that, with the help of biological and clinical research, are better and better understood, melanoma has the highest increase in incidence rate (see figure on the left). Despite better prevention, treatment and detection melanoma is still one of the most abundant and dangerous cancers. <br>'''Our intelligent sun protection system aims to protect human skin from dangerous UV radiation''', one of the major suspects in provoking DNA alteration in melanocytes that can lead to melanoma. | Among all cancers that, with the help of biological and clinical research, are better and better understood, melanoma has the highest increase in incidence rate (see figure on the left). Despite better prevention, treatment and detection melanoma is still one of the most abundant and dangerous cancers. <br>'''Our intelligent sun protection system aims to protect human skin from dangerous UV radiation''', one of the major suspects in provoking DNA alteration in melanocytes that can lead to melanoma. | ||
<br> | <br> | ||
====The Malignant Melanoma==== | ====The Malignant Melanoma==== | ||
- | [[Image:cancer_statistics_eth.png|left|thumb|350px| | + | [[Image:cancer_statistics_eth.png|left|thumb|350px|Worldwide cancer incidence change in percent]] |
Each year, approximately 160 000 new cases of malignant melanoma are diagnosed worldwide, of that 20-25 % finally lead to the death of the patient, making the malignant melanoma one of the most malignant existing cancers. It occurs more often in the light-skinned population of northern European countries as well as in highly UV–exposed regions such as Australia or New-Zealand. The incidence increased threefold over the last 30 years in Germany. The five year-survival rate is 90 % for women and 85 % for men. Another attribute of the malignant melanoma is its relatively early development at a mean age of 64 years for men and 58 years for women in Germany <span class="eth_reference">[Parkin2005]</span>. | Each year, approximately 160 000 new cases of malignant melanoma are diagnosed worldwide, of that 20-25 % finally lead to the death of the patient, making the malignant melanoma one of the most malignant existing cancers. It occurs more often in the light-skinned population of northern European countries as well as in highly UV–exposed regions such as Australia or New-Zealand. The incidence increased threefold over the last 30 years in Germany. The five year-survival rate is 90 % for women and 85 % for men. Another attribute of the malignant melanoma is its relatively early development at a mean age of 64 years for men and 58 years for women in Germany <span class="eth_reference">[Parkin2005]</span>. | ||
The therapy of the malignant melanoma is usually surgical removing of the tumor in early stages, which requires an early detection of the melanoma. In later stages also removal of the sentinel lymph node is performed to avoid metastasis via the lymph system. Other forms of the therapy for higher stages are palliative chemotherapy with dimethyl triazeno imidazole carboxamide (DITC) and, since the malignant melanoma is immunogenic, immunotherapy <span class="eth_reference">[RKI2010]</span>. Both therapies do not show a high success rate: stage four melanoma with distant metastasis to organs such as liver, lung, brain, bones and skin have an unfavorable prognosis and lead to the death of the patient within a median of six to twelve months <span class="eth_reference">[Parkin2005]</span>. | The therapy of the malignant melanoma is usually surgical removing of the tumor in early stages, which requires an early detection of the melanoma. In later stages also removal of the sentinel lymph node is performed to avoid metastasis via the lymph system. Other forms of the therapy for higher stages are palliative chemotherapy with dimethyl triazeno imidazole carboxamide (DITC) and, since the malignant melanoma is immunogenic, immunotherapy <span class="eth_reference">[RKI2010]</span>. Both therapies do not show a high success rate: stage four melanoma with distant metastasis to organs such as liver, lung, brain, bones and skin have an unfavorable prognosis and lead to the death of the patient within a median of six to twelve months <span class="eth_reference">[Parkin2005]</span>. |
Latest revision as of 18:50, 26 October 2012
Contents |
Motivation of our Project E.colipse
Sun burn and skin damage from UV radiation are important issues when one exposes oneself to sun radiation for a tanning session without applying proper sun protection. Furthermore, UV radiation is always present on sunny days, but often no sun protection is applied before exposing oneself to sunlight. With our project E.colipse, intelligent sun protection, we want to create a sun protection where no one has to worry anymore if he is protected from sun or not since on exposure to sunlight, a protection molecule and a warning signal in form of a pigment are produced.
Skin Cancer protection
Among all cancers that, with the help of biological and clinical research, are better and better understood, melanoma has the highest increase in incidence rate (see figure on the left). Despite better prevention, treatment and detection melanoma is still one of the most abundant and dangerous cancers.
Our intelligent sun protection system aims to protect human skin from dangerous UV radiation, one of the major suspects in provoking DNA alteration in melanocytes that can lead to melanoma.
The Malignant Melanoma
Each year, approximately 160 000 new cases of malignant melanoma are diagnosed worldwide, of that 20-25 % finally lead to the death of the patient, making the malignant melanoma one of the most malignant existing cancers. It occurs more often in the light-skinned population of northern European countries as well as in highly UV–exposed regions such as Australia or New-Zealand. The incidence increased threefold over the last 30 years in Germany. The five year-survival rate is 90 % for women and 85 % for men. Another attribute of the malignant melanoma is its relatively early development at a mean age of 64 years for men and 58 years for women in Germany [Parkin2005]. The therapy of the malignant melanoma is usually surgical removing of the tumor in early stages, which requires an early detection of the melanoma. In later stages also removal of the sentinel lymph node is performed to avoid metastasis via the lymph system. Other forms of the therapy for higher stages are palliative chemotherapy with dimethyl triazeno imidazole carboxamide (DITC) and, since the malignant melanoma is immunogenic, immunotherapy [RKI2010]. Both therapies do not show a high success rate: stage four melanoma with distant metastasis to organs such as liver, lung, brain, bones and skin have an unfavorable prognosis and lead to the death of the patient within a median of six to twelve months [Parkin2005].
References
- Brown, B. a, Headland, L. R., & Jenkins, G. I. (2009). UV-B action spectrum for UVR8-mediated HY5 transcript accumulation in Arabidopsis. Photochemistry and photobiology, 85(5), 1147–55.
- Christie, J. M., Salomon, M., Nozue, K., Wada, M., & Briggs, W. R. (1999): LOV (light, oxygen, or voltage) domains of the blue-light photoreceptor phototropin (nph1): binding sites for the chromophore flavin mononucleotide. Proceedings of the National Academy of Sciences of the United States of America, 96(15), 8779–83.
- Christie, J. M., Arvai, A. S., Baxter, K. J., Heilmann, M., Pratt, A. J., O’Hara, A., Kelly, S. M., et al. (2012). Plant UVR8 photoreceptor senses UV-B by tryptophan-mediated disruption of cross-dimer salt bridges. Science (New York, N.Y.), 335(6075), 1492–6.
- Cloix, C., & Jenkins, G. I. (2008). Interaction of the Arabidopsis UV-B-specific signaling component UVR8 with chromatin. Molecular plant, 1(1), 118–28.
- Cox, R. S., Surette, M. G., & Elowitz, M. B. (2007). Programming gene expression with combinatorial promoters. Molecular systems biology, 3(145), 145. doi:10.1038/msb4100187
- Drepper, T., Eggert, T., Circolone, F., Heck, A., Krauss, U., Guterl, J.-K., Wendorff, M., et al. (2007). Reporter proteins for in vivo fluorescence without oxygen. Nature biotechnology, 25(4), 443–5
- Drepper, T., Krauss, U., & Berstenhorst, S. M. zu. (2011). Lights on and action! Controlling microbial gene expression by light. Applied microbiology, 23–40.
- EuropeanCommission (2006). SCIENTIFIC COMMITTEE ON CONSUMER PRODUCTS SCCP Opinion on Biological effects of ultraviolet radiation relevant to health with particular reference to sunbeds for cosmetic purposes.
- Elvidge, C. D., Keith, D. M., Tuttle, B. T., & Baugh, K. E. (2010). Spectral identification of lighting type and character. Sensors (Basel, Switzerland), 10(4), 3961–88.
- GarciaOjalvo, J., Elowitz, M. B., & Strogatz, S. H. (2004). Modeling a synthetic multicellular clock: repressilators coupled by quorum sensing. Proceedings of the National Academy of Sciences of the United States of America, 101(30), 10955–60.
- Gao Q, Garcia-Pichel F. (2011). Microbial ultraviolet sunscreens. Nat Rev Microbiol. 9(11):791-802.
- Goosen N, Moolenaar GF. (2008) Repair of UV damage in bacteria. DNA Repair (Amst).7(3):353-79.
- Heijde, M., & Ulm, R. (2012). UV-B photoreceptor-mediated signalling in plants. Trends in plant science, 17(4), 230–7.
- Hirose, Y., Narikawa, R., Katayama, M., & Ikeuchi, M. (2010). Cyanobacteriochrome CcaS regulates phycoerythrin accumulation in Nostoc punctiforme, a group II chromatic adapter. Proceedings of the National Academy of Sciences of the United States of America, 107(19), 8854–9.
- Hirose, Y., Shimada, T., Narikawa, R., Katayama, M., & Ikeuchi, M. (2008). Cyanobacteriochrome CcaS is the green light receptor that induces the expression of phycobilisome linker protein. Proceedings of the National Academy of Sciences of the United States of America, 105(28), 9528–33.
- Kast, Asif-Ullah & Hilvert (1996) Tetrahedron Lett. 37, 2691 - 2694., Kast, Asif-Ullah, Jiang & Hilvert (1996) Proc. Natl. Acad. Sci. USA 93, 5043 - 5048
- Kiefer, J., Ebel, N., Schlücker, E., & Leipertz, A. (2010). Characterization of Escherichia coli suspensions using UV/Vis/NIR absorption spectroscopy. Analytical Methods, 9660. doi:10.1039/b9ay00185a
- Kinkhabwala, A., & Guet, C. C. (2008). Uncovering cis regulatory codes using synthetic promoter shuffling. PloS one, 3(4), e2030.
- Krebs in Deutschland 2005/2006. Häufigkeiten und Trends. 7. Auflage, 2010, Robert Koch-Institut (Hrsg) und die Gesellschaft der epidemiologischen Krebsregister in Deutschland e. V. (Hrsg). Berlin.
- Lamparter, T., Michael, N., Mittmann, F., & Esteban, B. (2002). Phytochrome from Agrobacterium tumefaciens has unusual spectral properties and reveals an N-terminal chromophore attachment site. Proceedings of the National Academy of Sciences of the United States of America, 99(18), 11628–33.
- Levskaya, A. et al (2005). Engineering Escherichia coli to see light. Nature, 438(7067), 442.
- Mancinelli, A. (1986). Comparison of spectral properties of phytochromes from different preparations. Plant physiology, 82(4), 956–61.
- Nakasone, Y., Ono, T., Ishii, A., Masuda, S., & Terazima, M. (2007). Transient dimerization and conformational change of a BLUF protein: YcgF. Journal of the American Chemical Society, 129(22), 7028–35.
- Orth, P., & Schnappinger, D. (2000). Structural basis of gene regulation by the tetracycline inducible Tet repressor-operator system. Nature structural biology, 215–219.
- Parkin, D.M., et al., Global cancer statistics, 2002. CA: a cancer journal for clinicians, 2005. 55(2): p. 74-108.
- Rajagopal, S., Key, J. M., Purcell, E. B., Boerema, D. J., & Moffat, K. (2004). Purification and initial characterization of a putative blue light-regulated phosphodiesterase from Escherichia coli. Photochemistry and photobiology, 80(3), 542–7.
- Rizzini, L., Favory, J.-J., Cloix, C., Faggionato, D., O’Hara, A., Kaiserli, E., Baumeister, R., et al. (2011). Perception of UV-B by the Arabidopsis UVR8 protein. Science (New York, N.Y.), 332(6025), 103–6.
- Roux, B., & Walsh, C. T. (1992). p-aminobenzoate synthesis in Escherichia coli: kinetic and mechanistic characterization of the amidotransferase PabA. Biochemistry, 31(30), 6904–10.
- Strickland, D. (2008). Light-activated DNA binding in a designed allosteric protein. Proceedings of the National Academy of Sciences of the United States of America, 105(31), 10709–10714.
- Sinha RP, Häder DP. UV-induced DNA damage and repair: a review. Photochem Photobiol Sci. (2002). 1(4):225-36
- Sambandan DR, Ratner D. (2011). Sunscreens: an overview and update. J Am Acad Dermatol. 2011 Apr;64(4):748-58.
- Tabor, J. J., Levskaya, A., & Voigt, C. A. (2011). Multichromatic Control of Gene Expression in Escherichia coli. Journal of Molecular Biology, 405(2), 315–324.
- Thibodeaux, G., & Cowmeadow, R. (2009). A tetracycline repressor-based mammalian two-hybrid system to detect protein–protein interactions in vivo. Analytical biochemistry, 386(1), 129–131.
- Tschowri, N., & Busse, S. (2009). The BLUF-EAL protein YcgF acts as a direct anti-repressor in a blue-light response of Escherichia coli. Genes & development, 522–534.
- Tschowri, N., Lindenberg, S., & Hengge, R. (2012). Molecular function and potential evolution of the biofilm-modulating blue light-signalling pathway of Escherichia coli. Molecular microbiology.
- Tyagi, A. (2009). Photodynamics of a flavin based blue-light regulated phosphodiesterase protein and its photoreceptor BLUF domain.
- Vainio, H. & Bianchini, F. (2001). IARC Handbooks of Cancer Prevention: Volume 5: Sunscreens. Oxford University Press, USA
- Quinlivan, Eoin P & Roje, Sanja & Basset, Gilles & Shachar-Hill, Yair & Gregory, Jesse F & Hanson, Andrew D. (2003). The folate precursor p-aminobenzoate is reversibly converted to its glucose ester in the plant cytosol. The Journal of biological chemistry, 278.
- van Thor, J. J., Borucki, B., Crielaard, W., Otto, H., Lamparter, T., Hughes, J., Hellingwerf, K. J., et al. (2001). Light-induced proton release and proton uptake reactions in the cyanobacterial phytochrome Cph1. Biochemistry, 40(38), 11460–71.
- Wegkamp A, van Oorschot W, de Vos WM, Smid EJ. (2007 )Characterization of the role of para-aminobenzoic acid biosynthesis in folate production by Lactococcus lactis. Appl Environ Microbiol. Apr;73(8):2673-81.