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Mesenchymal stem cell secretome or conditioned medium (MSC-CM) is a combination of biomolecules and growth factors in cell culture growth medium, secreted by mesenchymal stem cells (MSCs), and the starting point of several derived products. MSC-CM and its derivatives could be applied after injuries and could mediate most of the beneficial regenerative effects of MSCs without the possible side effects of using MSCs themselves. However, before the clinical application of these promising biopharmaceuticals, several issues such as manufacturing protocols and quality control must be addressed. This review aims to underline the influence of the procedure for conditioned medium production on the quality of the secretome and its derivatives and highlights the questions considering cell sources and donors, cell expansion, cell passage number and confluency, conditioning period, cell culture medium, microenvironment cues, and secretome-derived product purification. A high degree of variability in MSC secretomes is revealed based on these parameters, confirming the need to standardize and optimize protocols. Understanding how bioprocessing and manufacturing conditions interact to determine the quantity, quality, and profile of MSC-CM is essential to the development of good manufacturing practice (GMP)-compliant procedures suitable for replacing mesenchymal stem cells in regenerative medicine.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10454619 | PMC |
http://dx.doi.org/10.3390/ijms241612594 | DOI Listing |
Clin Oral Investig
September 2025
Department of Stomatology, Shengli Oilfield Central Hospital, No. 31, Jinan Road, Dongying, 257034, China.
Objective: Progesterone (PG) and its target, progesterone receptor (PGR), are important regulators in inflammatory diseases. This study aimed to investigate the specific role of PG in periodontitis and to elucidate the underlying mechanisms involving PGR.
Methods: Women with periodontitis, including 250 with PG deficiency, 250 with PG supplementation, and 245 controls (normal PG) were enrolled.
Nature
September 2025
Institute of Biomechanics and Medical Engineering, Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing, China.
The human stomach features distinct, regionalized functionalities along the anterior-posterior axis. Historically, studies on stomach patterning have used animal models to identify the underlying principles. Recently, human pluripotent stem (hPS)-cell-based gastric organoids for modelling domain-specific development of the fundic and antral epithelium are emerging.
View Article and Find Full Text PDFUltrasound Med Biol
September 2025
State Key Laboratory of Ultrasound in Medicine and Engineering, Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, China. Electronic address:
Objective: Diabetic foot ulcer (DFU) is a common and serious complication of diabetes, often leading to infection, amputation and poor quality of life. Bone marrow mesenchymal stem cells (BMSCs) have shown promise in treating chronic wounds, but their therapeutic efficacy is limited due to poor survival and low regenerative activity. Low-intensity pulsed ultrasound (LIUS), a non-invasive physical modality, has been shown to enhance the biological behavior of BMSCs.
View Article and Find Full Text PDFDev Cell
September 2025
Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK. Electronic address:
Lineage specification requires accurate interpretation of multiple signaling cues. However, how combinatorial signaling histories influence fate outcomes remains unclear. We combined single-cell transcriptomics, live-cell imaging, and mathematical modeling to explore how activin and bone morphogenetic protein 4 (BMP4) guide fate specification during human gastrulation.
View Article and Find Full Text PDFPhytomedicine
August 2025
Zhejiang Provincial Chinese Medicine Hospital (First affiliated hospital of Zhejiang Chinese Medical University), Zhejiang Chinese Medical University, Hangzhou City, Zhejiang Province, 310053, China; Department of Orthopedics, Affiliated Hospital of Jiangxi University of Chinese Medicine, Jiangxi Un
Background: Osteoporotic osteoarthritis (OPOA), a distinct subtype of osteoarthritis (OA), has imposed a significant health and economic burden worldwide. However, mechanistic studies and therapeutic strategies for this disease remain in the exploratory stage.
Purpose: This study aimed to investigate the specific molecular mechanisms by which osteoporosis (OP) exacerbates OA progression through accelerated subchondral bone (SB) sclerosis and the potential of Jiawei Yanghe Decoction (JWYHD) in treating OPOA.