Publications by authors named "Jiying Dong"

5 Publications

  • Page 1 of 1

HSPA1A Protects Cells from Thermal Stress by Impeding ESCRT-0-Mediated Autophagic Flux in Epidermal Thermoresistance.

J Invest Dermatol 2021 Jan 10;141(1):48-58.e3. Epub 2020 Jun 10.

Department of Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Traumatic Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China. Electronic address:

Thermoresistance is a physiological phenomenon relevant to noninvasive laser treatments for skin esthetics and tumor removal, although the underlying mechanism remains elusive. We hypothesized that HSPA1A may regulate autophagy by reducing ESCRT-0 and/or STAM2 levels, which could lead to thermal protection from cell death. In this study, we showed that thermoresistance was induced in mouse epidermal tissue and HaCaT cells by heating at 45 °C for 10 minutes. Moreover, HSPA1A levels were increased in thermoresistant mouse epidermis and HaCaT cells. HSPA1A was highly involved in protecting cells from thermal cytotoxicity, as evidenced by the knockdown or overexpression assays of the HSPA1A gene. In addition, ESCRT-0 and STAM2 levels were dramatically decreased in thermoresistant cells, which was mediated by HSPA1A binding to STAM2, particularly through HSPA1A amino acids 395‒509. Furthermore, the loss of ESCRT-0 and/or STAM2 in response to HSPA1A-STAM2 binding regulated autophagy by impeding autophagosome‒lysosome fusion and abolishing autophagic flux in cellular thermoresistance, significantly reducing thermal cytotoxicity and promoting cell survival. To our knowledge, it is previously unreported that HSPA1A-ESCRT-0 and/or STAM2 modulates heat-induced resistance by inhibiting autophagic flux. In summary, the results of this study demonstrate that the mechanisms of thermoresistance may have clinical relevance for noninvasive or minimally invasive thermal therapeutics.
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http://dx.doi.org/10.1016/j.jid.2020.05.105DOI Listing
January 2021

Advances in the treatment of traumatic scars with laser, intense pulsed light, radiofrequency, and ultrasound.

Burns Trauma 2019 29;7. Epub 2019 Jan 29.

Department of Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011 China.

Traumatic scarring is one of the most common complications after soft tissue injury caused by burns and trauma, which affects tens of millions of people worldwide every year. Traumatic scars diminish the quality of life due to disfigurement, symptoms of pain and itch, and restricted motion. The pathogenesis and pathophysiology of traumatic scar remain elusive. The management for traumatic scars is comprised of surgical and non-surgical interventions such as pressure therapy, silicone, corticosteroid, and radiotherapy, which are chosen by clinicians based on the physical examinations of scars. Recently, great progress in treating traumatic scars has been achieved by the development of novel technologies including laser, intense pulsed light (IPL), radiofrequency, and ultrasound. The aim of this review article was to summarize the advances of these technologies for traumatic scars intervention.
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http://dx.doi.org/10.1186/s41038-018-0141-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6350396PMC
January 2019

Application of 460 nm visible light for the elimination of Candida albicans in vitro and in vivo.

Mol Med Rep 2018 Aug 20;18(2):2017-2026. Epub 2018 Jun 20.

Department of Burns and Plastic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201999, P.R. China.

The aim of the present study was to investigate the eradicating effects of 460 nm blue light (BL) on Candida albicans in vitro and in C. albicans‑infected skin wounds in a mouse model. In the present study, the antifungal effects of irradiation with BL on C. albicans in vitro and in vivo were investigated. C. albicans colonies and cell numbers were investigated using the spread plate method and flow cytometry respectively following treatment with BL irradiation. In order to determine whether BL can eradicate C. albicans cells within biofilms, an in vitro C. albicans biofilm model was established, and the effect of BL was subsequently investigated using a confocal laser scanning microscope and a Live/Dead staining kit. Furthermore, a mouse skin wound infection model infected with C. albicans was established. Wound healing rates and histological examinations were determined 0, 3, 7, 10 and 14 days post‑wounding. The results revealed that C. albicans was eradicated by BL in a dose‑dependent manner, with a minimum fluence of 60 J/cm2. Irradiation with BL almost completely eradicated C. albicans when the light fluence was 240 J/cm2. C. albicans inside biofilms was also eradicated and biofilms were destroyed following BL irradiation at 240 J/cm2. In addition, BL was revealed to significantly suppress C. albicans infection in vivo. Irradiation with BL promoted the wound healing of C. albicans infected‑skin wounds in a mouse model. In conclusion, the results of the present study demonstrated that 460 nm BL may eradicate planktonic and biofilm C. albicans in vitro, and represents a novel therapeutic strategy for the treatment of C. albicans infections in vivo.
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http://dx.doi.org/10.3892/mmr.2018.9196DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6072199PMC
August 2018

Fractional microplasma radiofrequency technology for non-hypertrophic post-burn scars in Asians: A prospective study of 95 patients.

Lasers Surg Med 2017 08 20;49(6):563-569. Epub 2017 Feb 20.

Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital affiliated to Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju Road, Shanghai, 200011, P. R. China.

Background: Laser and other energy devices are emerging, minimally invasive treatments for scars. Among the various techniques, fractional microplasma radiofrequency technology (FMRT) has proven to be an effective treatment option for various types of scars and skin conditions such as rhytids, striae distensae, and hyperpigmentation.

Objective: This prospective clinical trial was designed to evaluate the efficacy and safety of FMRT for treating non-hypertrophic post-burn scars in the Asian population.

Method: All patients underwent three to five treatment sessions at various intervals of 8-16 weeks. The Patient and Observer Scar Assessment Scales (POSAS) [20] were used to evaluate changes in burn scars pre-and post-FMRT treatment.

Results: A total of 95 patients completed the study. The overall response rate was 86.3% (82/95). The total POSAS scores before and after 6 months of treatment were 53.41 ± 6.28 and 46.35 ± 5.30, respectively. There was statistically significant improvement in scar color, thickness, and pliability. There was no improvement in vascularization, pain, or itching. Complications included prolonged post-inflammatory hyperpigmentation, acne eruption, herpes simplex eruption, and abnormal hair growth. No severe adverse events, such as acute skin infection, hypertrophic scarring, or depigmentation, were observed.

Conclusion: FMRT is an efficacious, safe treatment for non-hypertrophic burn scars in the Asian population. Lasers Surg. Med. 49:563-569, 2017. © 2017 Wiley Periodicals, Inc.
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http://dx.doi.org/10.1002/lsm.22640DOI Listing
August 2017

Transplanted endothelial progenitor cells increase neo-vascularisation of rat pre-fabricated flaps.

J Plast Reconstr Aesthet Surg 2010 Mar 30;63(3):474-81. Epub 2008 Dec 30.

Department of Plastic & Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Medical College of Jiao Tong University, 639 Zhizaoju Road, Shanghai 200011, PR China.

Background: Flap pre-fabrication is dependent on the eventual re-vascularisation of the implanted vascular carrier and the presence of a desirable, donor-skin site. However, insufficient neo-vascularisation and subsequent necrosis is an obstacle for this technique. A recent discovery demonstrated that endothelial progenitor cells (EPCs) augment post-natal neo-vascularisation in ischaemic tissues. As a result, we examined whether transplantation of bone-marrow-derived EPCs (BM-EPCs) increases neo-vascularisation and augments the survival areas of pre-fabricated flap in a rat model.

Methods: Rat bone-marrow-derived mononuclear cells (BM-MNCs) were isolated by density gradient centrifugation and cultured in EGM-2MV. The EPCs derived from BM-MNCs were identified by surface makers such as CD34, KDR, CD133 and double-positive staining with 1,1'-dioctadecyl-3,3,3',3'-tetramethylindocarbocyanine-labelled acetylated low-density lipoprotein (Dil-Ac-LDL) and FITC-labelled Ulex europaeus agglutinin-1 (FITC-UEA-1). Pre-fabricated flaps were created by ligating the right femoral vascular pedicle and implanting it underneath the abdominal flap. Forty-five rats were randomly divided into three equal groups. The implantation site around the pedicle was injected subcutaneously with fluorescence-labelled BM-EPCs in group I (n=15), with vascular endothelium growth factor (VEGF) protein in group II (n=15) and with phosphate-buffered saline (PBS) in control group III. Four weeks after injection, the abdominal island flap was elevated and sutured back. Then, neo-vascularisation and flap viability was evaluated on day 7. The labelled EPCs were examined by fluorescence microscopy.

Results: After 7 days of culture, the attached cells were spindle shaped and expressed CD34, KDR and CD133. These cells incorporated DiI-Ac-LDL and bound FITC-UEA-1. Greater augmentation of flap survival (87.26+/-10.13% vs. 66.13+/-9.9% and 55.59+/-13.06%, P<0.001), higher capillary density (38.67+/-9.52 capillaries per mm(2) vs. 25.83+/-6.34 capillaries per mm(2) and 26.5+/-5.61 capillaries per mm(2), P<0.05) and larger vascular territories on the microangiogram were observed in the EPCs-treated group relative to the other two groups. The labelled cells formed new vessel structures and expressed von Willebrand factor (vWF) in the pre-fabricated flap.

Conclusions: Local transplantation of BM-EPCs may be a useful strategy for increasing the survival of pre-fabricated flaps, which is consistent with 'therapeutic vasculogenesis'. EPCs are superior to VEGF in their neo-vascularisation ability.
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http://dx.doi.org/10.1016/j.bjps.2008.11.076DOI Listing
March 2010
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