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中华口腔医学研究杂志(电子版) ›› 2026, Vol. 20 ›› Issue (04) : 311 -318. doi: 10.3877/cma.j.issn.1674-1366.2026.04.008

所属专题: 文献

生物材料专栏·综述

细胞外囊泡功能化生物材料在种植体周炎防治中的应用研究进展
马国文1, 柳燕如2, 田蓓敏3, 鞠骏4, 田义3, 张曦予3, 陈发明3, 王嘉3,()   
  1. 1空军军医大学基础医学院,西安 710032
    2口颌系统重建与再生全国重点实验室,口腔疾病国家临床医学研究中心,陕西省口腔医学重点实验室,空军军医大学口腔医院口腔材料学教研室,西安 710032
    3口颌系统重建与再生全国重点实验室,口腔疾病国家临床医学研究中心,陕西省口腔疾病国际联合研究中心,空军军医大学口腔医院牙周病科,西安 710032
    4解放军总医院第六医学中心,北京 100048
  • 收稿日期:2026-06-10 出版日期:2026-08-01
  • 通信作者: 王嘉

Progress on the application of extracellular vesicle-functionalized biomaterials in the prevention and treatment of peri-implantitis

Guowen Ma1, Yanru Liu2, Beimin Tian3, Jun Ju4, Yi Tian3, Xiyu Zhang3, Faming Chen3, Jia Wang3,()   

  1. 1School of Basic Medical Sciences, Air Force Medical University, Xi′an 710032, China
    2State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Dental Materials, School of Stomatology, The Fourth Military Medical University, Xi′an 710032, China
    3State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi′an 710032, China
    4The Sixth Medical Center of Chinese PLA General Hospital, Beijing 100048, China
  • Received:2026-06-10 Published:2026-08-01
  • Corresponding author: Jia Wang
  • Supported by:
    National Natural Science Foundation of China(82101049); Key Research and Development Program of Shaanxi Province(2026SF-YBXM-654); Clinical Innovation Project of School of Stomatology, The Fourth Military Medical University(LX2025-505)
引用本文:

马国文, 柳燕如, 田蓓敏, 鞠骏, 田义, 张曦予, 陈发明, 王嘉. 细胞外囊泡功能化生物材料在种植体周炎防治中的应用研究进展[J/OL]. 中华口腔医学研究杂志(电子版), 2026, 20(04): 311-318.

Guowen Ma, Yanru Liu, Beimin Tian, Jun Ju, Yi Tian, Xiyu Zhang, Faming Chen, Jia Wang. Progress on the application of extracellular vesicle-functionalized biomaterials in the prevention and treatment of peri-implantitis[J/OL]. Chinese Journal of Stomatological Research(Electronic Edition), 2026, 20(04): 311-318.

种植体周炎是导致种植修复失败的主要原因,常规治疗方法面临清创不彻底、药物浓度低和骨再生能力不足等局限。细胞外囊泡(EV)作为细胞分泌的膜包被结构,在调控炎症、促进组织再生和靶向治疗方面展现出潜力,但其天然形式存在靶向性不足、体内清除迅速等问题。将EV与生物材料功能化结合,可实现局部缓释、增强稳定性,发挥支架材料对骨再生的促进作用。本文系统总结了EV功能化生物材料的设计策略和工程化EV在种植体周炎防治中的应用研究进展,以期为种植体周炎的精准防治提供新型工程化策略和理论依据。

Peri-implantitis is a major cause of implant failure, and conventional treatments are limited by incomplete debridement, insufficient drug concentration, and poor bone regeneration capacity. Extracellular vesicles (EVs), as membrane-enclosed structures secreted by cells, show promise in regulating inflammation, promoting tissue regeneration, and enabling targeted therapy. However, natural EVs suffer from insufficient targeting and rapid clearance in vivo. The functional combination of EVs with biomaterials enables local sustained release, enhanced stability, and synergistic promotion of bone regeneration together with scaffold materials. This article reviews the construction strategies for EV-functionalized biomaterials and the research progress on the application of engineered EVs in the prevention and treatment of peri-implantitis, aiming to provide novel engineering strategies and theoretical foundations for the precise management of peri-implantitis.

[1]
徐明华,钱印杰,陈龙,等.种植体周炎诊断的研究进展[J].中华口腔医学杂志202459(12):1262-1271. DOI:10.3760/cma.j.cn112144-20240525-00218.
[2]
Derks JTomasi C. Peri-implant health and disease. A systematic review of current epidemiology[J]. J Clin Periodontol201542(S16):S158-S171. DOI:10.1111/jcpe.12334.
[3]
马国文,柳燕如,鞠骏,等.种植体周软组织关键细胞:稳态维持与炎症发生机制研究进展[J/OL].空军军医大学学报,1-13[2026-06-14].

URL    
[4]
Nie JZhang QZheng H,et al. Pyrosequencing of the subgingival microbiome in peri-implantitis after non-surgical mechanical debridement therapy[J]. J Periodontal Res202055(2):238-246. DOI:10.1111/jre.12708.
[5]
Riben Grundström CLund BKämpe J,et al. Systemic antibiotics in the surgical treatment of peri-implantitis:A randomized placebo-controlled trial[J]. J Clin Periodontol202451(8):981-996. DOI:10.1111/jcpe.13994.
[6]
Ramanauskaite ABecker KCafferata E A,et al. Clinical efficacy of guided bone regeneration in peri-implantitis defects. A network Meta-analysis[J]. Periodontology 2000202393(1):236-253. DOI:10.1111/prd.12510.
[7]
刘润园,董明,韩文青,等.小细胞外囊泡在牙周及牙髓再生中的应用与进展[J].中国组织工程研究202327(1):83-90. DOI:10.12307/2022.972.
[8]
肖优贞,刘富伟,李治冶,等.间充质干细胞来源外泌体在颞下颌关节骨关节炎治疗中的应用前景[J].实用口腔医学杂志202541(6):841-847. DOI:10.3969/j.issn.1001-3733.2025.06.020.
[9]
黄欣悦,龚旭,郭维维,等.外泌体在牙周再生应用的研究进展[J].实用口腔医学杂志202440(1):117-121. DOI:10.3969/j.issn.1001-3733.2024.01.020.
[10]
Lai J JChau Z LChen S Y,et al. Exosome processing and characterization approaches for research and technology development[J]. Adv Sci20229(15):e2103222. DOI:10.1002/advs.202103222.
[11]
Shi JLiu ZXie J,et al. Engineered extracellular vesicles as multifunctional therapeutics for restoring periodontal homeostasis[J]. Acta Biomater2025(210):457-480. DOI:10.1016/j.actbio.2025.11.060.
[12]
Nakao YFukuda TZhang Q,et al. Exosomes from TNF-α-treated human gingiva-derived MSCs enhance M2 macrophage polarization and inhibit periodontal bone loss[J]. Acta Biomater2020(122):306-324. DOI:10.1016/j.actbio.2020.12.046.
[13]
Ti DHao HTong C,et al. LPS-preconditioned mesenchymal stromal cells modify macrophage polarization for resolution of chronic inflammation via exosome-shuttled let-7b[J]. J Transl Med201513(1):308. DOI:10.1186/s12967-015-0642-6.
[14]
Almeria CWeiss RRoy M,et al. Hypoxia conditioned mesenchymal stem cell-derived extracellular vesicles induce increased vascular tube formation in vitro[J]. Front Bioeng Biotechnol2019(7):292. DOI:10.3389/fbioe.2019.00292.
[15]
Cao X MWu Y QShen Y Y,et al. Extracellular vesicles from hypoxia preconditioned bone marrow mesenchymal stem cell improve peri-implant osteogenesis under type 2 diabetes condition[J]. J Control Release2025388(Pt 1):114276. DOI:10.1016/j.jconrel.2025.114276.
[16]
Kwon SShin SDo M,et al. Engineering approaches for effective therapeutic applications based on extracellular vesicles[J]. J Control Release2021(330):15-30. DOI:10.1016/j.jconrel.2020.11.062.
[17]
Seo YKang HPark J. Shear stress-induced influx of extracellular calcium ions:A pivotal trigger amplifying the production of mesenchymal stem cell-derived extracellular vesicles[J]. Nanoscale202517(7):3861-3872. DOI:10.1039/d4nr01215a.
[18]
Wong C J KTai Y KYap J L Y,et al. Brief exposure to directionally-specific pulsed electromagnetic fields stimulates extracellular vesicle release and is antagonized by streptomycin:A potential regenerative medicine and food industry paradigm[J]. Biomaterials2022(287):121658. DOI:10.1016/j.biomaterials.2022.121658.
[19]
Yang ZDong YDong Z,et al. Targeted delivery of exosomal Bmp2 mRNA via a bioadhesive interface synergistically enhances titanium implant osseointegration[J]. Small202521(51):e10386. DOI:10.1002/smll.202510386.
[20]
Wen ZLi SLiu Y,et al. An engineered M2 macrophage-derived exosomes-loaded electrospun biomimetic periosteum promotes cell recruitment,immunoregulation,and angiogenesis in bone regeneration[J]. Bioact Mater2025(50):95-115. DOI:10.1016/j.bioactmat.2025.03.027.
[21]
Li XLiu ZXu S,et al. A drug delivery system constructed by a fusion peptide capturing exosomes targets to titanium implants accurately resulting the enhancement of osseointegration peri-implant[J]. Biomater Res202226(1):89. DOI:10.1186/s40824-022-00331-0.
[22]
Chen LMou SLi F,et al. Self-assembled human adipose-derived stem cell-derived extracellular vesicle-functionalized biotin-doped polypyrrole titanium with long-term stability and potential osteoinductive ability[J]. ACS Appl Mater Interfaces201911(49):46183-46196. DOI:10.1021/acsami.9b17015.
[23]
Liu WYu MChen F,et al. A novel delivery nanobiotechnology:Engineered miR-181b exosomes improved osteointegration by regulating macrophage polarization[J]. J Nanobiotechnology202119(1):269. DOI:10.1186/s12951-021-01015-y.
[24]
Zhao YHang RLi H,et al. Biomaterial surface-mediated macrophages exert immunomodulatory roles by exosomal CCL2-induced membrane integrin β1 trafficking in recipient cells[J]. Adv Sci202512(10):e2409809. DOI:10.1002/advs.202409809.
[25]
Maevskaia EGuerrero JGhayor C,et al. Functionalization of ceramic scaffolds with exosomes from bone marrow mesenchymal stromal cells for bone tissue engineering[J]. Int J Mol Sci202425(7):3826. DOI:10.3390/ijms25073826.
[26]
Shao HZhang QSun M,et al. Effects of hydroxyapatite-coated porous titanium scaffolds functionalized by exosomes on the regeneration and repair of irregular bone[J]. Front Bioeng Biotechnol2023(11):1283811. DOI:10.3389/fbioe.2023.1283811.
[27]
Wang LWei XHe X,et al. Osteoinductive dental pulp stem cell-derived extracellular vesicle-loaded multifunctional hydrogel for bone regeneration[J]. ACS Nano202418(12):8777-8797. DOI:10.1021/acsnano.3c11542.
[28]
Xiang KHao MZhang Z,et al. Engineering 3D-BMSC exosome-based hydrogels that collaboratively regulate bone microenvironment and promote osteogenesis for enhanced cell-free bone regeneration[J]. Mater Today Bio2025(32):101881. DOI:10.1016/j.mtbio.2025.101881.
[29]
靳瑞,王嘉,孙易初,等.载二甲双胍中空介孔硅纳米颗粒复合PLGA静电纺丝膜的制备、表征及体外生物学性能评价[J].实用口腔医学杂志202440(2):180-186. DOI:10.3969/j.issn.1001-3733.2024.02.005.
[30]
Jin RChen YZhang N,et al. SiO2 nanoparticle-encapsulated metformin delivered by a poly(lactic-co-glycolic acid)/polycaprolactone electrospun nanofiber membrane promotes cell osteogenesis under high-glucose conditions:In vitro and in vivo studies[J]. Transl Dent Res20251(1):100007. DOI:10.1016/j.tdr.2024.100007.
[31]
Wang RCheng YChen H,et al. SHED-exosome-functionalized degradable fibrous coatings:Immunomodulatory engineering of titanium implant interfaces[J]. Colloids Surf B Biointerfaces2026(262):115479. DOI:10.1016/j.colsurfb.2026.115479.
[32]
米志宽,汪瑞,陈宏,等.载乳牙牙髓干细胞外泌体纳米纤维涂层的构建及体外生物学特性研究[J].牙体牙髓牙周病学杂志202530(4):202-208. DOI:10.15956/j.cnki.chin.j.conserv.dent.2025.04.003.
[33]
Wu XJin SWang Q,et al. Calcium phosphate nanoparticle-immobilized macrophage-derived extracellular vesicle nanohybrid facilitates diabetic bone regeneration[J]. Adv Mater202538(3):e09410. DOI:10.1002/adma.202509410.
[34]
Zhou ZYLi ZBShi NS,et al. Metal-polyphenol network-engineered mesenchymal stem cell-derived exosome mimetics mediate inflammatory/immune regulation for enhanced periodontal tissue regeneration[J]. Biomaterials2025(327):123696. DOI:10.1016/j.biomaterials.2025.123696.
[35]
Schwarz FDerks JMonje A,et al. Peri-implantitis[J]. J Clin Periodontol201845(S20):S246-S266. DOI:10.1111/jcpe.12954.
[36]
Huang YLiu LLiu Q,et al. Dental follicle cells-derived small extracellular vesicles inhibit pathogenicity of Porphyromonas gingivalis[J]. Oral Dis202329(5):2297-2309. DOI:10.1111/odi.14239.
[37]
Li SYue YWang W,et al. Ultrasound-activated probiotics vesicles coating for titanium implant infections through bacterial cuproptosis-like death and immunoregulation[J]. Adv Mater202436(44):e2405953. DOI:10.1002/adma.202405953.
[38]
Zhuo HZhang SWang H,et al. Gelatin methacryloyl @MP196/exos hydrogel induced neutrophil apoptosis and macrophage M2 polarization to inhibit periodontal bone loss[J]. Colloids Surf B Biointerfaces2025(248):114466. DOI:10.1016/j.colsurfb.2024.114466.
[39]
Ma SLi YYao S,et al. A deformable SIS/HA composite hydrogel coaxial scaffold promotes alveolar bone regeneration after tooth extraction[J]. Bioact Mater2025(46):97-117. DOI:10.1016/j.bioactmat.2024.12.008.
[40]
Su HJia FTian Z,et al. Methacryloylated chitosan hydrogel-mediated polyphenol-Ga/hUCMSC-Exo release platform:Possessing antibacterial,anti-inflammatory,and osteogenic capabilities[J]. Int J Biol Macromol2025309(Pt2):142893. DOI:10.1016/j.ijbiomac.2025.142893.
[41]
Almeria CKreß SWeber V,et al. Heterogeneity of mesenchymal stem cell-derived extracellular vesicles is highly impacted by the tissue/cell source and culture conditions[J]. Cell Biosci202212(1):51. DOI:10.1186/s13578-022-00786-7.
[42]
Li RLi DWang H,et al. Exosomes from adipose-derived stem cells regulate M1/M2 macrophage phenotypic polarization to promote bone healing via miR-451a/MIF[J]. Stem Cell Res Ther202213(1):149. DOI:10.1186/s13287-022-02823-1.
[43]
Jayasree ALiu CSalomon C,et al. Microvesicle-eluting nano-engineered implants influence inflammatory response of keratinocytes[J]. Drug Deliv Transl Res202314(12):3371-3384. DOI:10.1007/s13346-023-01457-x.
[44]
Cheng YDong XShi J,et al. Immunomodulation with M2 macrophage-derived extracellular vesicles for enhanced titanium implant osseointegration under diabetic conditions[J]. Mater Today Bio2025(30):101385. DOI:10.1016/j.mtbio.2024.101385.
[45]
Wang YQu FWu Y,et al. Peripheral nerves modulate the peri-implant osteogenesis under type 2 diabetes through exosomes derived from schwann cells via miR-15b-5p/Txnip signaling axis[J]. J Nanobiotechnology202523(1):51. DOI:10.1186/s12951-025-03160-0.
[46]
Ahmad PEstrin NFarshidfar N,et al. Mechanistic insights into periodontal ligament stem cell-derived exosomes in tissue regeneration[J]. Clin Oral Investig202529(7):357. DOI:10.1007/s00784-025-06422-1.
[47]
Deng YXiao JHuang X,et al. Macrophage-derived exosomes rescue the TNF-α-suppressed osteo-/cementogenic differentiation of hPDLCs[J]. Oral Dis202430(8):5232-5242. DOI:10.1111/odi.14947.
[48]
Kang MHuang CCLu Y,et al. Bone regeneration is mediated by macrophage extracellular vesicles[J]. Bone2020(141):115627. DOI:10.1016/j.bone.2020.115627.
[49]
Cao ZWu YYu L,et al. Exosomal miR-335 derived from mature dendritic cells enhanced mesenchymal stem cell-mediated bone regeneration of bone defects in athymic rats[J]. Mol Med202127(1):20. DOI:10.1186/s10020-021-00268-5.
[50]
Wang FLin WLiu L,et al. Titanium-guided neutrophil dynamics for inflammation resolution and tissue integration[J]. Biomaterials2026(330):124048. DOI:10.1016/j.biomaterials.2026.124048.
[51]
Salehy SNokhbatolfoghahaei HKhojasteh A. A four-pronged approach to unleash the regenerative potential of extracellular vesicles for bone regeneration:A systematic review of in vitro and in vivo studies[J]. Biomater Adv2026(182):214661. DOI:10.1016/j.bioadv.2025.214661.
[52]
Zhou HLi XYin Y,et al. The proangiogenic effects of extracellular vesicles secreted by dental pulp stem cells derived from periodontally compromised teeth[J]. Stem Cell Res Ther202011(1):110. DOI:10.1186/s13287-020-01614-w.
[53]
Wang XShah FAVazirisani F,et al. Exosomes influence the behavior of human mesenchymal stem cells on titanium surfaces[J]. Biomaterials2020(230):119571. DOI:10.1016/j.biomaterials.2019.119571.
[54]
Zhang ZXu RYang Y,et al. Micro/nano-textured hierarchical titanium topography promotes exosome biogenesis and secretion to improve osseointegration[J]. J Nanobiotechnology202119(1):78. DOI:10.1186/s12951-021-00826-3.
[55]
Han PLiu CJayasree A,et al. Nano-engineered titanium implants loaded with gingival fibroblasts-derived microvesicles enhance early osseointegration and soft tissue attachment in vivo[J]. Adv Healthc Mater202615(13):e04516. DOI:10.1002/adhm.202504516.
[56]
Wei FLi MCrawford R,et al. Exosome-integrated titanium oxide nanotubes for targeted bone regeneration[J]. Acta Biomater2019(86):480-492. DOI:10.1016/j.actbio.2019.01.006.
[57]
Wang JWang YLi Y,et al. Unique regulation of TiO2 nanoporous topography on macrophage polarization via MSC-derived exosomes[J]. Regen Biomater2023(10):rbad012. DOI:10.1093/rb/rbad012.
[58]
Wang WQiao SCWu XB,et al. Circ0008542 in osteoblast exosomes promotes osteoclast-induced bone resorption through m6A methylation[J]. Cell Death Dis202112(7):628. DOI:10.1038/s41419-021-03915-1.
[59]
Yin SLin SXu J,et al. Dominoes with interlocking consequences triggered by zinc:Involvement of microelement-stimulated MSC-derived exosomes in senile osteogenesis and osteoclast dialogue[J]. J Nanobiotechnology202321(1):346. DOI:10.1186/s12951-023-02085-w.
[60]
Su HWang ZZhou L,et al. Regulation of the Nrf2/HO-1 axis by mesenchymal stem cells-derived extracellular vesicles:Implications for disease treatment[J]. Front Cell Dev Biol2024(12):1397954. DOI:10.3389/fcell.2024.1397954.
[61]
He SWang QChen L,et al. miR-100a-5p-enriched exosomes derived from mesenchymal stem cells enhance the anti-oxidant effect in a Parkinson's disease model via regulation of Nox4/ROS/Nrf2 signaling[J]. J Transl Med202321(1):747. DOI:10.1186/s12967-023-04638-x.
[62]
Bedoui SHerold MJStrasser A. Emerging connectivity of programmed cell death pathways and its physiological implications[J]. Nat Rev Mol Cell Biol202021(11):678-695. DOI:10.1038/s41580-020-0270-8.
[63]
Chaparro AAtria PRealini O,et al. Diagnostic potential of peri-implant crevicular fluid microRNA-21-3p and microRNA-150-5p and extracellular vesicles in peri-implant diseases[J]. J Periodontol202092(6):11-21. DOI:10.1002/JPER.20-0372.
[64]
Ran GJin HYang Q,et al. Engineering MSC-exosomes for diabetic bone regeneration:From mechanism to delivery[J]. Stem Cell Res Ther202617(1):142. DOI:10.1186/s13287-026-04957-y.
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[14] 中华人民共和国国家卫生健康委员会医政司, 中华医学会肿瘤学分会. 国家卫生健康委员会中国结直肠癌诊疗规范(2025版)(精简版)[J/OL]. 中华临床医师杂志(电子版), 2025, 19(12): 877-885.
[15] 吴毅涵, 陈茂辉, 郑斌. 虚拟现实技术在肺癌外科中的应用现状[J/OL]. 中华胸部外科电子杂志, 2026, 13(02): 124-131.
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