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Aguilera AC, Leiva N, Alvarez PA, Pulcini G, Pereyra LL, Morales CR, Sosa MÁ, Carvelli L. Sortilin knock-down alters the expression and distribution of cathepsin D and prosaposin and up-regulates the cation-dependent mannose-6-phosphate receptor in rat epididymal cells. Sci Rep 2023; 13:3461. [PMID: 36859404 PMCID: PMC9977780 DOI: 10.1038/s41598-023-29157-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/31/2023] [Indexed: 03/03/2023] Open
Abstract
The selective transport to lysosomes can be mediated by either mannose-6-phosphate receptors (CD-MPR and CI-MPR) or sortilin. In mammalian epididymis, some lysosomal proteins are secreted into the lumen through unknown mechanisms. To investigate the underlying mechanisms of lysosomal protein transport in epididymal cells we studied the expression and distribution of cathepsin D (CatD) and prosaposin (PSAP) in a sortilin knocked down RCE-1 epididymal cell line (RCE-1 KD) in comparison with non-transfected RCE-1 cells. In RCE-1 cells, CatD was found in the perinuclear zone and co-localize with sortilin, whereas in RCE-1 KD cells, the expression, distribution and processing of the enzyme were altered. In turn, PSAP accumulated intracellularly upon sortilin knock-down and redistributed from LAMP-1-positive compartment to a perinuclear location, remaining co-localized with CatD. Interestingly, the sortilin knock-down induced CD-MPR overexpression and a redistribution of the receptor from the perinuclear zone to a dispersed cytoplasmic location, accompanied by an increased co-localization with CatD. The increase in CD-MPR could result from a compensatory response for the proper delivery of CatD to lysosomes in epididymal cells. The intracellular pathway taken by lysosomal proteins could be an approach for addressing further studies to understand the mechanism of exocytosis and therefore the role of these proteins in the epididymis.
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Affiliation(s)
- Andrea Carolina Aguilera
- CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina.,Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina
| | - Natalia Leiva
- CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina.,Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina
| | - Pablo Ariel Alvarez
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina
| | - Georgina Pulcini
- IHEM-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina
| | - Laura Lucía Pereyra
- IHEM-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina
| | | | - Miguel Ángel Sosa
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina.,IHEM-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina
| | - Lorena Carvelli
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina. .,IHEM-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, M5500, Mendoza, Argentina.
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Moro E. Lysosomal Storage Disorders: Molecular Basis and Therapeutic Approaches. Biomolecules 2021; 11:biom11070964. [PMID: 34208892 PMCID: PMC8301764 DOI: 10.3390/biom11070964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 11/16/2022] Open
Abstract
Lysosomal storage disorders (LSDs) are a group of 60 rare inherited diseases characterized by a heterogeneous spectrum of clinical symptoms, ranging from severe intellectual disabilities, cardiac abnormalities, visceromegaly, and bone deformities to slowly progressive muscle weakness, respiratory insufficiency, eye defects (corneal clouding and retinal degeneration), and skin alterations [...].
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Affiliation(s)
- Enrico Moro
- Department of Molecular Medicine, University of Padova, via U.Bassi 58/b, 35131 Padova, Italy
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Masunaga A, Kawahara T, Morita H, Nakazawa K, Tokunaga Y, Akita S. Fatty acid potassium improves human dermal fibroblast viability and cytotoxicity, accelerating human epidermal keratinocyte wound healing in vitro and in human chronic wounds. Int Wound J 2021; 18:467-477. [PMID: 33433959 PMCID: PMC8273623 DOI: 10.1111/iwj.13547] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/19/2020] [Accepted: 12/31/2020] [Indexed: 12/11/2022] Open
Abstract
Effective cleaning of a wound promotes wound healing and favours wound care as it can prevent and control biofilms. The presence of biofilm is associated with prolonged wound healing, increased wound propensity to infection, and delayed wound closure. Anionic potassium salts of fatty acids are tested with commonly used anionic surfactants, such as sodium laureth sulphate (SLES) and sodium lauryl sulphate/sodium dodecyl sulphate (SLS/SDS). The normal human dermal cells demonstrated significantly greater viability in fatty acid potassium, including caprylic acid (C8), capric acid (C10), lauric acid (C12), oleic acid (C18:1), and linoleic acid (C18:2), than in SLES or SLS after a 24-hour incubation. Cytotoxicity by LDH assay in a 5-minute culture in fatty acid potassium was significantly lower than in SLES or SLS. in vitro wound healing of human epidermal keratinocytes during the scratch assay in 24-hour culture was more significantly improved by fatty acid treatment than by SLES or SLS/SDS. In a live/dead assay of human epidermal keratinocytes, C8K and C18:1K demonstrated only green fluorescence, indicating live cells, whereas synthetic surfactants, SLES and SLS, demonstrated red fluorescence on staining with propidium iodide, indicating dead cells after SLES and SLS/SDS treatment. Potassium salts of fatty acids are useful wound cleaning detergents that do not interfere with wound healing, as observed in the scratch assay using human epidermal keratinocytes. As potassium salts of fatty acids are major components of natural soap, which are produced by natural oil and caustic potash using a saponification method, this may be clinically important in wound and peri-wound skin cleaning. In human chronic wounds, natural soap containing fatty acid potassium increased tissue blood flow based on laser speckle flowgraphs after 2 weeks (P < .05), in addition to removing the eschars and debris. Wound cleansing by natural soap of fatty acid potassium is beneficial for wound healing.
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Affiliation(s)
| | | | | | - Kohji Nakazawa
- Department of Life and Environment Engineering, The University of Kitakyushu, Kitakyushu, Japan
| | - Yuto Tokunaga
- Department of Life and Environment Engineering, The University of Kitakyushu, Kitakyushu, Japan
| | - Sadanori Akita
- Department of Plastic Surgery, Wound Repair and Regeneration, Fukuoka University, Fukuoka, Japan
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