Discover the SciOpen Platform and Achieve Your Research Goals with Ease.
Search articles, authors, keywords, DOl and etc.
Intracellular pH plays a critical role in biological functions, and abnormal pH values are related to various diseases. Here, we report on an intracellular pH sensor AgInS2 (AIS)/ZnS quantum dots (QDs) that show long fluorescence lifetimes of hundreds of nanoseconds and low toxicity. Fluorescence lifetime imaging microscopy (FLIM) combined with AIS/ZnS QDs is used for the imaging of live cells in different pH buffers and different cell lines. The FLIM images of AIS/ZnS QDs in live cells demonstrate different intracellular pH values in different regions, such as in lysosomes or cytoplasm. This method can also distinguish cancer cells from normal cells, and the fluorescence lifetime difference of the AIS/ZnS QDs between the two types of cells is 100 ± 7 ns. Most importantly, the exfoliated cervical cells from 20 patients are investigated using FLIM combined with AIS/ZnS QDs. The lifetime difference value between the normal and cervical cancer (CC) groups is 115 ± 9 ns, and the difference between the normal and the precancerous lesion group is 64 ± 9 ns. For the first time, the noninvasive method has been used for cervical cancer screening, and it has shown great improvement in sensitivity compared with a clinical conventional cytology examination.
Flinck, M.; Kramer, S. H.; Pedersen, S. F. Roles of pH in control of cell proliferation. Acta Physiol. (Oxf.) 2018, 223, e13068.
Lan, A.; Lagadic-Gossmann, D.; Lemaire, C.; Brenner, C.; Jan, G. Acidic extracellular pH shifts colorectal cancer cell death from apoptosis to necrosis upon exposure to propionate and acetate, major end-products of the human probiotic propionibacteria. Apoptosis 2007, 12, 573–591.
Di Sario, A.; Bendia, E.; Omenetti, A.; De Minicis, S.; Marzioni, M.; Kleemann, H. W.; Candelaresi, C.; Saccomanno, S.; Alpini, G.; Benedetti, A. Selective inhibition of ion transport mechanisms regulating intracellular pH reduces proliferation and induces apoptosis in cholangiocarcinoma cells. Dig. Liver Dis. 2007, 39, 60–69.
Pacheco-Liñán, P. J.; Bravo, I.; Nueda, M. L.; Albaladejo, J.; Garzón-Ruiz, A. Functionalized CdSe/ZnS quantum dots for intracellular pH measurements by fluorescence lifetime imaging microscopy. ACS Sens. 2020, 5, 2106–2117.
Huang, M. J.; Liang, X. Y.; Zhang, Z. X.; Wang, J.; Fei, Y. Y.; Ma, J.; Qu, S. N.; Mi, L. Carbon dots for intracellular pH sensing with fluorescence lifetime imaging microscopy. Nanomaterials (Basel) 2020, 10, 604.
Fang, B. Y.; Wang, D. J.; Huang, M. F.; Yu, G. H.; Li, H. Hypothesis on the relationship between the change in intracellular pH and incidence of sporadic Alzheimer's disease or vascular dementia. Int. J. Neurosci. 2010, 120, 591–595.
Mattson, M. P.; Pedersen, W. A.; Duan, W. Z.; Culmsee, C.; Camandola, S. Cellular and molecular mechanisms underlying perturbed energy metabolism and neuronal degeneration in Alzheimer's and Parkinson's diseases. Ann. N Y Acad. Sci. 1999, 893, 154–175.
Chaumeil, M. M.; Valette, J.; Baligand, C.; Brouillet, E.; Hantraye, P.; Bloch, G.; Gaura, V.; Rialland, A.; Krystkowiak, P.; Verny, C. et al. pH as a biomarker of neurodegeneration in Huntington's disease: A translational rodent-human MRS study. J. Cereb. Blood Flow Metab. 2012, 32, 771–779.
Swietach, P.; Vaughan-Jones, R. D.; Harris, A. L.; Hulikova, A. The chemistry, physiology and pathology of pH in cancer. Philos. Trans. R. Soc. Lond. B Biol. Sci. 2014, 369, 20130099.
Han, J. Y.; Burgess, K. Fluorescent indicators for intracellular pH. Chem. Rev. 2010, 110, 2709–2728.
Chen, M. M.; Chen, C. Y.; Shen, Z. W.; Zhang, X. L.; Chen, Y. Z.; Lin, F. F.; Ma, X. L.; Zhuang, C. Y.; Mao, Y. F.; Gan, H. C. et al. Extracellular pH is a biomarker enabling detection of breast cancer and liver cancer using CEST MRI. Oncotarget 2017, 8, 45759–45767.
Lin, L. S.; Cong, Z. X.; Li, J.; Ke, K. M.; Guo, S. S.; Yang, H. H.; Chen, G. N. Graphitic-phase C3N4 nanosheets as efficient photosensitizers and pH-responsive drug nanocarriers for cancer imaging and therapy. J. Mater. Chem. B 2014, 2, 1031–1037.
Pirsaheb, M.; Mohammadi, S.; Salimi, A.; Payandeh, M. Functionalized fluorescent carbon nanostructures for targeted imaging of cancer cells: A review. Microchim. Acta 2019, 186, 231.
Battisti, A.; Digman, M. A.; Gratton, E.; Storti, B.; Beltram, F.; Bizzarri, R. Intracellular pH measurements made simple by fluorescent protein probes and the phasor approach to fluorescence lifetime imaging. Chem. Commun. (Camb.) 2012, 48, 5127–5129.
Poëa-Guyon, S.; Pasquier, H.; Mérola, F.; Morel, N.; Erard, M. The enhanced cyan fluorescent protein: A sensitive pH sensor for fluorescence lifetime imaging. Anal. Bioanal. Chem. 2013, 405, 3983–3987.
Wang, L.; Kang, X. J.; Pan, D. C. Gram-scale synthesis of hydrophilic PEI-coated AgInS2 quantum dots and its application in hydrogen peroxide/glucose detection and cell imaging. Inorg. Chem. 2017, 56, 6122–6130.
Nideep, T. K.; Ramya, M.; Sony, U.; Kailasnath, M. MSA capped CdTe quantum dots for pH sensing application. Mater. Res. Expr. 2019, 6, 105002.
Orte, A.; Alvarez-Pez, J. M.; Ruedas-Rama, M. J. Fluorescence lifetime imaging microscopy for the detection of intracellular pH with quantum dot nanosensors. ACS Nano 2013, 7, 6387–6395.
Ripoll, C.; Roldan, M.; Contreras-Montoya, R.; Diaz-Mochon, J. J.; Martin, M.; Ruedas-Rama, M. J.; Orte, A. Mitochondrial pH nanosensors for metabolic profiling of breast cancer cell lines. Int. J. Mol. Sci. 2020, 21, 3731.
Chen, C.; Zhang, P. F.; Zhang, L.; Gao, D. Y.; Gao, G. H.; Yang, Y.; Li, W. J.; Gong, P.; Cai, L. T. Long-decay near-infrared-emitting doped quantum dots for lifetime-based in vivo pH imaging. Chem. Commun. (Camb.) 2015, 51, 11162–11165.
Zaffalon, M. L.; Pinchetti, V.; Camellini, A.; Vikulov, S.; Capitani, C.; Bai, B.; Xu, M.; Meinardi, F.; Zhang, J. T.; Manna, L. et al. Intrinsic and extrinsic exciton recombination pathways in AgInS2 colloidal nanocrystals. Energy Mater. Adv. 2021, 2021, 1959321.
Kowalik, P.; Mucha, S. G.; Matczyszyn, K.; Bujak, P.; Mazur, L. M.; Ostrowski, A.; Kmita, A.; Gajewska, M.; Pron, A. Heterogeneity induced dual luminescence properties of AgInS2 and AgInS2-ZnS alloyed nanocrystals. Inorg. Chem. Front. 2021, 8, 3450–3462.
Casey, J. R.; Grinstein, S.; Orlowski, J. Sensors and regulators of intracellular pH. Nat. Rev. Mol. Cell Biol. 2010, 11, 50–61.
Cardone, R. A.; Casavola, V.; Reshkin, S. J. The role of disturbed pH dynamics and the Na+/H+ exchanger in metastasis. Nat. Rev. Cancer 2005, 5, 786–795.
Van Den Bergh, H. Early detection of lung cancer and the role of endoscopic fluorescence imaging. Med. Laser Applicat. 2003, 18, 20–26.
Koliopoulos, G.; Nyaga, V. N.; Santesso, N.; Bryant, A.; Martin-Hirsch, P. P.; Mustafa, R. A.; Schünemann, H.; Paraskevaidis, E.; Arbyn, M. Cytology versus HPV testing for cervical cancer screening in the general population. Cochrane Database Syst. Rev. 2017, 8, CD008587.
Saslow, D.; Solomon, D.; Lawson, H. W.; Killackey, M.; Kulasingam, S. L.; Cain, J. M.; Garcia, F. A. R.; Moriarty, A. T.; Waxman, A. G.; Wilbur, D. C. et al. American Cancer society, American Society for Colposcopy and Cervical Pathology, and American Society for Clinical Pathology screening guidelines for the prevention and early detection of cervical cancer. CA Cancer J. Clin. 2012, 16, 175–204.
Xie, J.; Pan, X. B.; Wang, M.; Ma, J. Y.; Fei, Y. Y.; Wang, P. N.; Mi, L. The role of surface modification for TiO2 nanoparticles in cancer cells. Colloids Surf. B Biointerf. 2016, 143, 148–155.
Huang, X. Y.; Huang, Y.; Yan, F. P.; Xue, X. G.; Zhang, K. X.; Cai, P.; Zhang, X. W.; Zhang, X. Y. Constructing defect-related subband in silver indium sulfide QDs via pH-dependent oriented aggregation for boosting photocatalytic hydrogen evolution. J Colloid Interf. Sci. 2021, 593, 222–230.
Ning, Y. Y.; Cheng, S. M.; Wang, J. X.; Liu, Y. W.; Feng, W.; Li, F. Y.; Zhang, J. L. Fluorescence lifetime imaging of upper gastrointestinal pH in vivo with a lanthanide based near-infrared τ probe. Chem. Sci. 2019, 10, 4227–4235.
Jia, X. F.; Li, J.; Wang, E. K. One-pot green synthesis of optically pH-sensitive carbon dots with upconversion luminescence. Nanoscale 2012, 4, 5572–5575.
Liu, X. X.; Yang, C. L.; Zheng, B. Z.; Dai, J. Y.; Yan, L.; Zhuang, Z. J.; Du, J.; Guo, Y.; Xiao, D. Green anhydrous synthesis of hydrophilic carbon dots on large-scale and their application for broad fluorescent pH sensing. Sens. Actuat. B Chem. 2018, 255, 572–579.
Zhao, W.; Song, C.; Pehrsson, P. E. Water-soluble and optically pH-sensitive single-walled carbon nanotubes from surface modification. J. Am. Chem. Soc. 2002, 124, 12418–12419.
Yang, M.; Li, B. Y.; Zhong, K. L.; Lu, Y. Photoluminescence properties of N-doped carbon dots prepared in different solvents and applications in pH sensing. J. Mater. Sci. 2017, 53, 2424–2433.
Oh, N.; Park, J. H. Surface chemistry of gold nanoparticles mediates their exocytosis in macrophages. ACS Nano 2014, 8, 6232–6241.
Dunn, K. W.; Kamocka, M. M.; McDonald, J. H. A practical guide to evaluating colocalization in biological microscopy. Am. J. Physiol. Cell Physiol. 2011, 300, C723–742.
Miri, A. K.; Heris, H. K.; Tripathy, U.; Wiseman, P. W.; Mongeau, L. Microstructural characterization of vocal folds toward a strain-energy model of collagen remodeling. Acta Biomater. 2013, 9, 7957–7967.
Iversen, T. G.; Skotland, T.; Sandvig, K. Endocytosis and intracellular transport of nanoparticles: Present knowledge and need for future studies. Nano Today 2011, 6, 176–185.
Nagy, A.; Zane, A.; Cole, S. L.; Severance, M.; Dutta, P. K.; Waldman, W. J. Contrast of the biological activity of negatively and positively charged microwave synthesized CdSe/ZnS quantum dots. Chem. Res. Toxicol. 2011, 24, 2176–2188.
Martens, T. F.; Remaut, K.; Demeester, J.; De Smedt, S. C.; Braeckmans, K. Intracellular delivery of nanomaterials: How to catch endosomal escape in the act. Nano Today 2014, 9, 344–364.
Zhang, Y.; Mi, L.; Wang, P. N.; Lu, S. J.; Chen, J. Y.; Guo, J.; Yang, W. L.; Wang, C. C. Photoluminescence decay dynamics of thiol-capped CdTe quantum dots in living cells under microexcitation. Small 2008, 4, 777–780.
Chao, S. C.; Wu, G. J.; Huang, S. F.; Dai, N. T.; Huang, H. K.; Chou, M. F.; Tsai, Y. T.; Lee, S. P.; Loh, S. H. Functional and molecular mechanism of intracellular pH regulation in human inducible pluripotent stem cells. World J. Stem. Cells 2018, 10, 196–211.
Persi, E.; Duran-Frigola, M.; Damaghi, M.; Roush, W. R.; Aloy, P.; Cleveland, J. L.; Gillies, R. J.; Ruppin, E. Systems analysis of intracellular pH vulnerabilities for cancer therapy. Nat. Commun. 2018, 9, 2997.
Pal, A.; Ahmad, K.; Dutta, D.; Chattopadhyay, A. Boron doped carbon dots with unusually high photoluminescence quantum yield for ratiometric intracellular pH sensing. ChemPhysChem 2019, 20, 1018–1027.
Galenkamp, K. M. O.; Sosicka, P.; Jung, M.; Recouvreux, M. V.; Zhang, Y. J.; Moldenhauer, M. R.; Brandi, G.; Freeze, H. H.; Commisso, C. Golgi acidification by NHE7 regulates cytosolic pH homeostasis in pancreatic cancer cells. Cancer Discov. 2020, 10, 822–835.
Llopis, J.; McCaffery, J. M.; Miyawaki, A.; Farquhar, M. G.; Tsien, R. Y. Measurement of cytosolic, mitochondrial, and Golgi pH in single living cells with green fluorescent proteins. Proc. Natl. Acad. Sci. USA 1998, 95, 6803–6808.
Leone, R. D.; Powell, J. D. Metabolism of immune cells in cancer. Nat. Rev. Cancer 2020, 20, 516–531.
Webb, B. A.; Chimenti, M.; Jacobson, M. P.; Barber, D. L. Dysregulated pH: A perfect storm for cancer progression. Nat. Rev. Cancer 2011, 11, 671–677.
White, K. A.; Grillo-Hill, B. K.; Barber, D. L. Cancer cell behaviors mediated by dysregulated pH dynamics at a glance. J. Cell Sci. 2017, 130, 663–669.
Wang, W. S.; Liu, Y.; Niu, J.; Lin, W. Y. Discriminating normal and inflammatory models by viscosity changes with a mitochondria-targetable fluorescent probe. Analyst 2019, 144, 6247–6253.
Ordóñez-Hernández, J.; Jiménez-Sánchez, A.; García-Ortega, H.; Sánchez-Puig, N.; Flores-Álamo, M.; Santillan, R.; Farfán, N. A series of dual-responsive Coumarin-Bodipy probes for local microviscosity monitoring. Dyes Pigments 2018, 157, 305–313.
Chen, W.; Han, J. Y.; She, J. X.; Wang, F. L.; Zhu, L.; Yu, R. Q.; Jiang, J. H. Simultaneous imaging of lysosomal and mitochondrial viscosity during mitophagy using molecular rotors with dual-color emission. Chem. Commun. (Camb) 2020, 56, 7797–7800.
Orij, R.; Urbanus, M. L.; Vizeacoumar, F. J.; Giaever, G.; Boone, C.; Nislow, C.; Brul, S.; Smits, G. J. Genome-wide analysis of intracellular pH reveals quantitative control of cell division rate by pHc in Saccharomyces cerevisiae. Genome Biol. 2012, 13, R80.