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  • Open Access

    ARTICLE

    Photodynamic therapy with TBZPy regulates the PI3K/AKT and endoplasmic reticulum stress-related PERK/eIF2α pathways in HeLa cells

    YIFAN LI1,2, JING ZHANG1, YITAO FAN1, HANDAN XIAO1, KEXIN KANG1, YALI ZHOU1, ZHIWEN ZHANG3,*, YUMIN LI1, MUZHOU TENG1,*

    BIOCELL, Vol.47, No.8, pp. 1783-1791, 2023, DOI:10.32604/biocell.2023.028056

    Abstract Background: ((1-triphenylaminebenzo[c][1,2,5] thiadiazole-4-yl) styryl)-1-methylpyridin methylpyridin-1-ium iodide salt (TBZPy) is a novel photosensitizer that displays excellent photodynamic properties. However, There are few reports on the mechanism of action of the TBZPy photodynamic. Previous studies revealed that photodynamic therapy (PDT) could induce endoplasmic reticulum stress by acting on the endoplasmic reticulum. Therefore, in this study, we investigated the effects of endoplasmic reticulum stress induced by TBZPy-PDT in treating High-risk human papillomavirus (HR-HPV) infection and their underlying mechanisms. Methods: The human cervical cancer cell line HeLa (containing whole genome of HR-HPV18) was treated with TBZPy-PDT. Cell migration, invasion, and colony-forming ability were evaluated… More > Graphic Abstract

    Photodynamic therapy with TBZPy regulates the PI3K/AKT and endoplasmic reticulum stress-related PERK/eIF2α pathways in HeLa cells

  • Open Access

    REVIEW

    Application of photodynamic therapy in cancer: challenges and advancements

    ZIXUAN WANG1,#, HONGMEI PENG2,#, WEI SHI4,#, LU GAN1, LIPING ZHONG1, JIAN HE1, LINLIN XIE1, PAN WU1, YONGXIANG ZHAO1, ZHIMING DENG3,*, HONGLIANG TANG4, YONG HUANG1,3,*

    BIOCELL, Vol.45, No.3, pp. 489-500, 2021, DOI:10.32604/biocell.2021.014439

    Abstract Although great achievements have been made in the past decades in medicine, cancer remains a worldwide public health issue. Surgery is usually accompanied by shortcomings such as residual lesions and poor treatment effects, and the successive appearance of other treatment methods, such as radiotherapy and chemotherapy, has not changed the postoperative recurrence rate, toxicity, and side effects. However, the advent of photodynamic therapy has greatly improved this situation. Photodynamic therapy is an emerging tumor diagnosis and treatment technology with good application prospects, photodynamic therapy uses a specific wavelength of light to excite a photosensitizer to generate reactive oxygen species, damage… More >

  • Open Access

    ARTICLE

    Simulation and Modeling of Laser-Tissue Interactions Based on a Liposome-Dye System

    F.E. Mensah∗,†, R. Sridhar, P. Misra

    Molecular & Cellular Biomechanics, Vol.7, No.4, pp. 203-212, 2010, DOI:10.3970/mcb.2010.007.203

    Abstract This work presents an overview of the use of liposomes for targeted delivery of photosensitizers to tumors for Photodynamic Therapy (PDT). It assesses the results of a quantitative model to explain the interaction of short-pulsed lasers (in the nanosecond and picosecond domains) with a liposome-dye complex in terms of a localized photo-induced thermal mechanism. Incorporation of an organic dye (sulforhodamine) within lipid vesicles has been investigated in conjunction with the effect of laser irradiation on the integrity of the liposome-dye complex. The variation of the absorption coefficient as a function of wavelength for dye-encapsulated liposomes before and after laser-induced release… More >

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