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Review | Open Access

Recent progress of nanotechnology-based theranostic systems in cancer treatments

Ying Xue1Yuting Gao1Fanling Meng1,2Liang Luo1,2,3 ( )
National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Research Institute of Huazhong University of Science and Technology in Shenzhen, Shenzhen 518057, China
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Abstract

Theranostics that integrates therapy and diagnosis in one system to achieve accurate cancer diagnosis and treatment has attracted tremendous interest, and has been recognized as a potential breakthrough in overcoming the challenges of conventional oncotherapy. Nanoparticles are ideal candidates as carriers for theranostic agents, which is attributed to their extraordinary physicochemical properties, including nanoscale sizes, functional properties, prolonged blood circulation, active or passive tumor targeting, specific cellular uptake, and in some cases, excellent optical properties that ideally meet the needs of phototherapy and imaging at the same time. Overall, with the development of nanotechnology, theranostics has become a reality, and is now in the transition stage of “bench to bedside.” In this review, we summarize recent progress on nanotechnology-based theranostics, i.e., nanotheranostics, that has greatly assisted traditional therapies, and has provided therapeutic strategies emerging in recent decades, as well as “cocktail” theranostics mixing various treatment modalities.

References

1

Allemani C, Matsuda T, Di Carlo V, Harewood R, Matz M, Niksic M, et al. Global surveillance of trends in cancer survival 2000-14 (CONCORD-3): analysis of individual records for 37 513 025 patients diagnosed with one of 18 cancers from 322 population-based registries in 71 countries. Lancet. 2018; 391: 1023-75.

2

Lin G, Mi P, Chu C, Zhang J, Liu G. Inorganic nanocarriers overcoming multidrug resistance for cancer theranostics. Adv Sci. 2016; 3: 1600134.

3

Yao VJ, D’Angelo S, Butler KS, Theron C, Smith TL, Marchio S, et al. Ligand-targeted theranostic nanomedicines against cancer. J Control Release. 2016; 240: 267-86.

4

Semkina AS, Abakumov MA, Skorikov AS, Abakumova TO, Melnikov PA, Grinenko NF, et al. Multimodal doxorubicin loaded magnetic nanoparticles for VEGF targeted theranostics of breast cancer. Nanomedicine. 2018; 14: 1733-42.

5

Baetke S C, Lammers T, Kiessling F. Applications of nanoparticles for diagnosis and therapy of cancer. Br J Radiol. 2015; 88: 20150207.

6

Feng G, Liu B. Multifunctional AIEgens for future theranostics. Small. 2016; 12: 6528-35.

7

Li S, Zou Q, Xing R, Govindaraju T, Fakhrullin R, Yan X. Peptide-modulated self-assembly as a versatile strategy for tumor supramolecular nanotheranostics. Theranostics. 2019; 9: 3249-61.

8

Kalyane D, Raval N, Maheshwari R, Tambe V, Kalia K, Tekade RK. Employment of enhanced permeability and retention effect (EPR): nanoparticle-based precision tools for targeting of therapeutic and diagnostic agent in cancer. Mater Sci Eng C Mater Biol Appl. 2019; 98: 1252-76.

9

Guo X, Wei X, Chen Z, Zhang XB, Yang G, Zhou SB. Multifunctional nanoplatforms for subcellular delivery of drugs in cancer therapy. Prog Mater Sci. 2020; 107: 24.

10

Andreou C, Pal S, Rotter L, Yang J, Kircher MF. Molecular imaging in nanotechnology and theranostics. Mol Imaging Biol. 2017; 19: 363-72.

11

Xie J, Lee S, Chen X. Nanoparticle-based theranostic agents. Adv Drug Deliv Rev. 2010; 62: 1064-79.

12

Jo SD, Ku SH, Won Y-Y, Kim SH, Kwon IC. Targeted nanotheranostics for future personalized medicine: recent progress in cancer therapy. Theranostics. 2016; 6: 1362-77.

13

Mi Y, Shao Z, Vang J, Kaidar-Person O, Wang AZ. Application of nanotechnology to cancer radiotherapy. Cancer Nanotechnol. 2016; 7: 11.

14

Chen H, Zhang W, Zhu G, Xie J, Chen X. Rethinking cancer nanotheranostics. Nat Rev Mater. 2017; 2: 17024.

15

Zhao CY, Cheng R, Yang Z, Tian ZM. Nanotechnology for cancer therapy based on chemotherapy. Molecules. 2018; 23: 826.

16

Xing H, Hwang K, Lu Y. Recent developments of liposomes as nanocarriers for theranostic applications. Theranostics. 2016; 6: 1336-52.

17

Choi KY, Han HS, Lee ES, Shin JM, Almquist BD, Lee DS, et al. Hyaluronic acid-based activatable nanomaterials for stimuli-responsive imaging and therapeutics: beyond CD44-mediated drug delivery. Adv Mater. 2019; 31: 1803549.

18

Luo M, Fan T, Zhou Y, Zhang H, Mei L. 2d black phosphorus–based biomedical applications. Adv Funct Mater. 2019; 29: 1808306.

19

Li Z, Barnes JC, Bosoy A, Stoddart JF, Zink JI. Mesoporous silica nanoparticles in biomedical applications. Chem Soc Rev. 2012; 41: 2590-605.

20

Fan M, Han Y, Gao S, Yan H, Cao L, Li Z, et al. Ultrasmall gold nanoparticles in cancer diagnosis and therapy. Theranostics. 2020; 10: 4944-57.

21

Chen XJ, Zhang XQ, Liu Q, Zhang J, Zhou G. Nanotechnology: a promising method for oral cancer detection and diagnosis. J Nanobiotechnol. 2018; 16: 52.

22

Haume K, Rosa S, Grellet S, Smialek MA, Butterworth KT, Solov’yov AV, et al. Gold nanoparticles for cancer radiotherapy: a review. Cancer Nanotechnol. 2016; 7: 8.

23

Liu YJ, Bhattarai P, Dai ZF, Chen XY. Photothermal therapy and photoacoustic imaging via nanotheranostics in fighting cancer. Chem Soc Rev. 2019; 48: 2053-108.

24

Al-Jamal WT, Kostarelos K. Liposomes: from a clinically established drug delivery system to a nanoparticle platform for theranostic nanomedicine. Acc Chem Res. 2011; 44: 1094-104.

25

Li J, Hu Y, Yang J, Wei P, Sun W, Shen M, et al. Hyaluronic acid-modified Fe3O4@Au core/shell nanostars for multimodal imaging and photothermal therapy of tumors. Biomaterials. 2015; 38: 10-21.

26

Zhang L, Gao S, Zhang F, Yang K, Ma Q, Zhu L. Activatable hyaluronic acid nanoparticle as a theranostic agent for optical/photoacoustic image-guided photothermal therapy. ACS Nano. 2014; 8: 12250-8.

27

Kaaki K, Herve-Aubert K, Chiper M, Shkilnyy A, Souce M, Benoit R, et al. Magnetic nanocarriers of doxorubicin coated with poly(ethylene glycol) and folic acid: relation between coating structure, surface properties, colloidal stability, and cancer cell targeting. Langmuir. 2012; 28: 1496-505.

28

Liu X, Wang C, Liu Z. Protein-engineered biomaterials for cancer theranostics. Adv Healthc Mater. 2018; 7: 1800913.

29

Yan Y, Dong Y, Yue S, Qiu X, Sun H, Zhong Z. Dually active targeting nanomedicines based on a direct conjugate of two purely natural ligands for potent chemotherapy of ovarian tumors. ACS Appl Mater Interfaces. 2019; 11: 46548-57.

30

Cherkasov VR, Mochalova EN, Babenyshev AV, Rozenberg JM, Sokolov IL, Nikitin MP. Antibody-directed metal-organic framework nanoparticles for targeted drug delivery. Acta Biomater. 2020; 103: 223-36.

31

Swierczewska M, Han HS, Kim K, Park JH, Lee S. Polysaccharide-based nanoparticles for theranostic nanomedicine. Adv Drug Deliv Rev. 2016; 99: 70-84.

32

Hou WX, Zhao X, Qian XQ, Pan F, Zhang CL, Yang YM, et al. Ph-sensitive self-assembling nanoparticles for tumor near-infrared fluorescence imaging and chemo-photodynamic combination therapy. Nanoscale. 2016; 8: 104-16.

33

Horcajada P, Chalati T, Serre C, Gillet B, Sebrie C, Baati T, et al. Porous metal-organic-framework nanoscale carriers as a potential platform for drug delivery and imaging. Nat Mater. 2010; 9: 172-8.

34

Tao W, Zhu X, Yu X, Zeng X, Xiao Q, Zhang X, et al. Black phosphorus nanosheets as a robust delivery platform for cancer theranostics. Adv Mater. 2017; 29: 1603276.

35

Herrmann K, Schwaiger M, Lewis JS, Solomon SB, McNeil BJ, Baumann M, et al. Radiotheranostics: a roadmap for future development. Lancet Oncol. 2020; 21: e146-56.

36

Ma G, Liu X, Deng G, Yuan H, Wang Q, Lu J. A novel theranostic agent based on porous bismuth nanosphere for CT imaging-guided combined chemo-photothermal therapy and radiotherapy. J Mater Chem B. 2018; 6: 6788-95.

37

Fani M, Peitl PK, Velikyan I. Current status of radiopharmaceuticals for the theranostics of neuroendocrine neoplasms. Pharmaceuticals. 2017; 10: 30.

38

Jadvar H, Chen X, Cai W, Mahmood U. Radiotheranostics in cancer diagnosis and management. Radiology. 2018; 286: 388-400.

39

Song Z, Chang Y, Xie H, Yu X-F, Chu PK, Chen T. Decorated ultrathin bismuth selenide nanosheets as targeted theranostic agents for in vivo imaging guided cancer radiation therapy. Npg Asia Mater. 2017; 9: e439.

40

Iikuni S, Ono M, Watanabe H, Shimizu Y, Sano K, Saji H. Cancer radiotheranostics targeting carbonic anhydrase-IX with in-111- and y-90-labeled ureidosulfonamide scaffold for SPECT imaging and radionuclide-based therapy. Theranostics. 2018; 8: 2992-3006.

41

Mishiro K, Hanaoka H, Yamaguchi A, Ogawa K. Radiotheranostics with radiolanthanides: design, development strategies, and medical applications. Coord Chem Rev. 2019; 383: 104-31.

42

Du J, Gu Z, Yan L, Yong Y, Yi X, Zhang X, et al. Poly(vinylpyrollidone)- and selenocysteine-modified Bi2Se3 nanoparticles enhance radiotherapy efficacy in tumors and promote radioprotection in normal tissues. Adv Mater. 2017; 29: 1701268.

43

Gao K, Tu W, Yu X, Ahmad F, Zhang X, Wu W, et al. W-doped TiO2 nanoparticles with strong absorption in the NIR-II window for photoacoustic/CT dual-modal imaging and synergistic thermoradiotherapy of tumors. Theranostics. 2019; 9: 5214-26.

44

Wang Q, Xia B, Xu J, Niu X, Cai J, Shen Q, et al. Biocompatible small organic molecule phototheranostics for NIR-II fluorescence/photoacoustic imaging and simultaneous photodynamic/photothermal combination therapy. Mater Chem Front. 2019; 3: 650-5.

45

Yi G, Hong SH, Son J, Yoo J, Park C, Choi Y, et al. Recent advances in nanoparticle carriers for photodynamic therapy. Quant Imaging Med Surg. 2018; 8: 433-43.

46

Yu J, Rong Y, Kuo C-T, Zhou X-H, Chiu DT. Recent advances in the development of highly luminescent semiconducting polymer dots and nanoparticles for biological imaging and medicine. Anal Chem. 2017; 89: 42-56.

47

Zhou J, Zhang Y, Yu G, Crawley MR, Fulong CRP, Friedman AE, et al. Highly emissive self-assembled BODIPY-platinum supramolecular triangles. J Am Chem Soc. 2018; 140: 7730-36.

48

Li J, Zhen X, Lyu Y, Jiang Y, Huang J, Pu K. Cell membrane coated semiconducting polymer nanoparticles for enhanced multimodal cancer phototheranostics. ACS Nano. 2018; 12: 8520-30.

49

Yu Z, Zhou P, Pan W, Li N, Tang B. A biomimetic nanoreactor for synergistic chemiexcited photodynamic therapy and starvation therapy against tumor metastasis. Nat Commun. 2018; 9: 5044.

50

Yuan Y, Kwok RTK, Tang BZ, Liu B. Targeted theranostic platinum(IV) prodrug with a built-in aggregation-induced emission light-up apoptosis sensor for noninvasive early evaluation of its therapeutic responses in situ. J Am Chem Soc. 2014; 136: 2546-54.

51

Yuan Y, Zhang C-J, Gao M, Zhang R, Tang BZ, Liu B. Specific light-up bioprobe with aggregation-induced emission and activatable photoactivity for the targeted and image-guided photodynamic ablation of cancer cells. Angew Chem Int Ed. 2015; 54: 1780-6.

52

Shi H, Kwok RTK, Liu J, Xing B, Tang BZ, Liu B. Real-time monitoring of cell apoptosis and drug screening using fluorescent light-up probe with aggregation-induced emission characteristics. J Am Chem Soc. 2012; 134: 17972-81.

53

Mei J, Leung NLC, Kwok RTK, Lam JWY, Tang BZ. Aggregation-induced emission: together we shine, united we soar! Chem Rev. 2015; 115: 11718-940.

54

Gao YT, Wang XX, He XW, He ZY, Yang X, Tian SD, et al. A dual-functional photosensitizer for ultraefficient photodynamic therapy and synchronous anticancer efficacy monitoring. Adv Funct Mater. 2019; 29: 1902673.

55

Wang X, Tong J, He Z, Yang X, Meng F, Liang H, et al. Paclitaxel-potentiated photodynamic theranostics for synergistic tumor ablation and precise anticancer efficacy monitoring. ACS Appl Mater Interfaces. 2020; 12: 5476-87.

56

Gao Y, He Z, He X, Zhang H, Weng J, Yang X, et al. Dual-color emissive AIEgen for specific and label-free double-stranded dna recognition and single-nucleotide polymorphisms detection. J Am Chem Soc. 2019; 141: 20097-106.

57

Wu M, Wu L, Li J, Zhang D, Lan S, Zhang X, et al. Self-luminescing theranostic nanoreactors with intraparticle relayed energy transfer for tumor microenvironment activated imaging and photodynamic therapy. Theranostics. 2019; 9: 20-33.

58

Avci P, Karimi M, Sadasivam M, Antunes-Melo WC, Carrasco E, Hamblin MR. In-vivo monitoring of infectious diseases in living animals using bioluminescence imaging. Virulence. 2018; 9: 28-63.

59

Yang Y, Hou W, Liu S, Sun K, Li M, Wu C. Biodegradable polymer nanoparticles for photodynamic therapy by bioluminescence resonance energy transfer. Biomacromolecules. 2018; 19: 201-8.

60

Karimi M, Zangabad PS, Baghaee-Ravari S, Ghazadeh M, Mirshekari H, Hamblin MR. Smart nanostructures for cargo delivery: uncaging and activating by light. J Am Chem Soc. 2017; 139: 4584-610.

61

Kim M, Lee J-H, Nam J-M. Plasmonic photothermal nanoparticles for biomedical applications. Adv Sci. 2019; 6: 1900471.

62

Wang H, Li X, Tse BW-C, Yang H, Thorling CA, Liu Y, et al. Indocyanine green-incorporating nanoparticles for cancer theranostics. Theranostics. 2018; 8: 1227-42.

63

An F-F, Zhang X-H. Strategies for preparing albumin-based nanoparticles for multifunctional bioimaging and drug delivery. Theranostics. 2017; 7: 3667-89.

64

Chen Q, Liang C, Sun X, Chen J, Yang Z, Zhao H, et al. H2O2-responsive liposomal nanoprobe for photoacoustic inflammation imaging and tumor theranostics via in vivo chromogenic assay. Proc Natl Acad Sci USA. 2017; 114: 5343-8.

65

Zhou L, Jing Y, Liu Y, Liu Z, Gao D, Chen H, et al. Mesoporous carbon nanospheres as a multifunctional carrier for cancer theranostics. Theranostics. 2018; 8: 663-75.

66

Cao Z, Feng L, Zhang G, Wang J, Shen S, Li D, et al. Semiconducting polymer-based nanoparticles with strong absorbance in NIR-II window for in vivo photothermal therapy and photoacoustic imaging. Biomaterials. 2018; 155: 103-11.

67

Wang J, Yao C, Shen B, Zhu X, Li Y, Shi L, et al. Upconversion-magnetic carbon sphere for near infrared light-triggered bioimaging and photothermal therapy. Theranostics. 2019; 9: 608-19.

68

Chen W, Ouyang J, Liu H, Chen M, Zeng K, Sheng J, et al. Black phosphorus nanosheet-based drug delivery system for synergistic photodynamic/photothermal/chemotherapy of cancer. Adv Mater. 2017; 29: 1603864.

69

Dong Z, Gong H, Gao M, Zhu W, Sun X, Feng L, et al. Polydopamine nanoparticles as a versatile molecular loading platform to enable imaging-guided cancer combination therapy. Theranostics. 2016; 6: 1031-42.

70

Yin F, Hu K, Chen Y, Yu M, Wang D, Wang Q, et al. SiRNA delivery with pegylated graphene oxide nanosheets for combined photothermal and genetherapy for pancreatic cancer. Theranostics. 2017; 7: 1133-48.

71

Yu A-M, Jian C, Yu A H, Tu M-J. RNA therapy: are we using the right molecules? Pharmacol Ther. 2019; 196: 91-104.

72

Wang J, Mi P, Lin G, Wang YXJ, Liu G, Chen X. Imaging-guided delivery of RNAi for anticancer treatment. Adv Drug Del Rev. 2016; 104: 44-60.

73

Zheng X, Zhang F, Zhao Y, Zhang J, Dawulieti J, Pan Y, et al. Self-assembled dual fluorescence nanoparticles for CD44-targeted delivery of anti-miR-27a in liver cancer theranostics. Theranostics. 2018; 8: 3808-23.

74

Kim MW, Jeong HY, Kang SJ, Jeong IH, Choi MJ, You YM, et al. Anti-EGF receptor aptamer-guided co-delivery of anti-cancer siRNAs and quantum dots for theranostics of triple-negative breast cancer. Theranostics. 2019; 9: 837-52.

75

Ammari M, Presumey J, Ponsolles C, Roussignol G, Roubert C, Escriou V, et al. Delivery of miR-146a to Ly6C(high) monocytes inhibits pathogenic bone erosion in inflammatory arthritis. Theranostics. 2018; 8: 5972-85.

76

Bertoli G, Cava C, Castiglioni I. MicroRNAs as biomarkers for diagnosis, prognosis and theranostics in prostate cancer. Int J Mol Sci. 2016; 17: 421.

77

Hwang DW, Kim HY, Li F, Park JY, Kim D, Park JH, et al. In vivo visualization of endogenous miR-21 using hyaluronic acid-coated graphene oxide for targeted cancer therapy. Biomaterials. 2017; 121: 144-54.

78

Petrescu GED, Sabo AA, Torsin LI, Calin GA, Dragomir MP. MicroRNA based theranostics for brain cancer: basic principles. J Exp Clin Cancer Res. 2019; 38: 231.

79

Guo W, Wang H, Yang Y, Guo S, Zhang W, Liu Y, et al. Down-regulated miR-23a contributes to the metastasis of cutaneous melanoma by promoting autophagy. Theranostics. 2017; 7: 2231-49.

80

Yan N, Wang X, Lin L, Song T, Sun P, Tian H, et al. Gold nanorods electrostatically binding nucleic acid probe for in vivo microRNA amplified detection and photoacoustic imaging-guided photothermal therapy. Adv Funct Mater. 2018; 28: 1800490.

81

Sun B, Li J, Shao D, Pan Y, Chen Y, Li S, et al. Adipose tissue-secreted miR-27a promotes liver cancer by targeting FOXO1 in obese individuals. Onco Targets Ther. 2015; 8: 735-44.

82

Ni Q, Zhang F, Zhang Y, Zhu G, Wang Z, Teng Z, et al. In Situ shRNA synthesis on DNA-polylactide nanoparticles to treat multidrug resistant breast cancer. Adv Mater. 2018; 30: 1705737.

83

Zhu G, Mei L, Vishwasrao HD, Jacobson O, Wang Z, Liu Y, et al. Intertwining DNA-RNA nanocapsules loaded with tumor neoantigens as synergistic nanovaccines for cancer immunotherapy. Nat Commun. 2017; 8: 1482.

84

Jang B, Kwon H, Katila P, Lee SJ, Lee H. Dual delivery of biological therapeutics for multimodal and synergistic cancer therapies. Adv Drug Del Rev. 2016; 98: 113-33.

85

Zhang L, Zhang M, Zhou L, Han Q, Chen X, Li S, et al. Dual drug delivery and sequential release by amphiphilic Janus nanoparticles for liver cancer theranostics. Biomaterials. 2018; 181: 113-25.

86

Teo PY, Cheng W, Hedrick JL, Yang YY. Co-delivery of drugs and plasmid DNA for cancer therapy. Adv Drug Del Rev. 2016; 98: 41-63.

87

Zhong X, Yang K, Dong Z, Yi X, Wang Y, Ge C, et al. Polydopamine as a biocompatible multifunctional nanocarrier for combined radioisotope therapy and chemotherapy of cancer. Adv Funct Mater. 2015; 25: 7327-36.

88

Jaidev LR, Chellappan DR, Bhaysar DV, Ranganathan R, Sivanantham B, Subramanian A, et al. Multi-functional nanoparticles as theranostic agents for the treatment & imaging of pancreatic cancer. Acta Biomater. 2017; 49: 422-33.

89

Chen W, Zeng K, Liu H, Ouyang J, Wang L, Liu Y, et al. Cell membrane camouflaged hollow prussian blue nanoparticles for synergistic photothermal-/chemotherapy of cancer. Adv Funct Mater. 2017; 27: 1605795.

90

Min KH, Kim Y-H, Wang Z, Kim J, Kim JS, Kim SH, et al. Engineered Zn(Ⅱ)-dipicolylamine-gold nanorod provides effective prostate cancer treatment by combining siRNA delivery and photothermal therapy. Theranostics. 2017; 7: 4240-54.

91

Liu Y, Zhen W, Jin L, Zhang S, Sun G, Zhang T, et al. All-in-one theranostic nanoagent with enhanced reactive oxygen species generation and modulating tumor microenvironment ability for effective tumor eradication. ACS Nano. 2018; 12: 4886-93.

92

Zhang L, Su H, Wang H, Li Q, Li X, Zhou C, et al. Tumor chemo-radiotherapy with rod-shaped and spherical gold nano probes: shape and active targeting both matter. Theranostics. 2019; 9: 1893-908.

93

Detappe A, Thomas E, Tibbitt MW, Kunjachan S, Zavidij O, Parnandi N, et al. Ultrasmall silica-based bismuth gadolinium nanoparticles for dual magnetic resonance-computed tomography image guided radiation therapy. Nano Lett. 2017; 17: 1733-40.

94

Truffi M, Fiandra L, Sorrentino L, Monieri M, Corsi F, Mazzucchelli S. Ferritin nanocages: a biological platform for drug delivery, imaging and theranostics in cancer. Pharmacol Res. 2016; 107: 57-65.

95

Chen Y, Wu Y, Sun B, Liu S, Liu H. Two-dimensional nanomaterials for cancer nanotheranostics. Small. 2017; 13: 1603446.

Cancer Biology & Medicine
Pages 336-351
Cite this article:
Xue Y, Gao Y, Meng F, et al. Recent progress of nanotechnology-based theranostic systems in cancer treatments. Cancer Biology & Medicine, 2021, 18(2): 336-351. https://doi.org/10.20892/j.issn.2095-3941.2020.0510

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Received: 30 August 2020
Accepted: 30 December 2020
Published: 01 May 2021
©2021 Cancer Biology & Medicine.

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