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Growth factors (GFs) play a crucial role in directing stem cell behavior and transmitting information between different cell populations for tissue regeneration. However, their utility as therapeutics is limited by their short half-life within the physiological microenvironment and significant side effects caused by off-target effects or improper dosage. "Smart" materials that can not only sustain therapeutic delivery over a treatment period but also facilitate on-demand release upon activation are attracting significant interest in the field of GF delivery for tissue engineering. Three properties are essential in engineering these "smart" materials: 1) the cargo vehicle protects the encapsulated therapeutic; 2) release is targeted to the site of injury; 3) cargo release can be modulated by disease-specific stimuli. The aim of this review is to summarize the current research on stimuli-responsive materials as intelligent vehicles for controlled GF delivery; Five main subfields of tissue engineering are discussed: skin, bone and cartilage, muscle, blood vessel, and nerve. Challenges in achieving such "smart" materials and perspectives on future applications of stimuli-responsive GF delivery for tissue regeneration are also discussed.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7189772 | PMC |
http://dx.doi.org/10.1002/adhm.201901714 | DOI Listing |
Sci Adv
September 2025
Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China.
Bioinspired network designs are widely exploited in biointegrated electronics and tissue engineering because of their high stretchability, imperfection insensitivity, high permeability, and biomimetic J-shaped stress-strain responses. However, the fabrication of three-dimensionally (3D) architected electronic devices with ordered constructions of network microstructures remains challenging. Here, we introduce the tensile buckling of stacked multilayer precursors as a unique route to 3D network materials with regularly distributed 3D microstructures.
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September 2025
School of Electrical and Electronic Engineering, Yonsei University, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
Brain-computer interfaces (BCIs) enable direct communication between the brain and computers. However, their long-term functionality remains limited due to signal degradation caused by acute insertion trauma, chronic foreign body reaction (FBR), and biofouling at the device-tissue interface. To address these challenges, we introduce a multifunctional surface modification strategy called targeting-specific interaction and blocking nonspecific adhesion (TAB) coating for flexible fiber, achieving a synergistic integration of mechanical compliance and biochemical stability.
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September 2025
Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA.
Breastfeeding is essential for reducing infant morbidity and mortality, yet exclusive breastfeeding rates remain low, often because of insufficient milk production. The molecular causes of low milk production are not well understood. Fresh milk samples from 30 lactating individuals, classified by milk production levels across postpartum stages, were analyzed using genomic and microbiome techniques.
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September 2025
Burn Injury Research Unit, School of Biomedical Sciences, University of Western Australia, Perth, Western Australia 6009, Australia.
Skin scars remain a substantial clinical challenge because of their impact on appearance and psychological well-being. Lysyl oxidases catalyze collagen cross-linking, a key factor in scar development. Here, we report a randomized, double-blind, placebo-controlled phase 1 study to assess the safety and tolerability of PXS-6302, a topical pan-lysyl oxidase inhibitor, in treating mature scars (ACTRN12621001545853).
View Article and Find Full Text PDFTissue Eng Part B Rev
September 2025
Department of Pharmaceutics School of Pharmacy, Centre for Nano Drug/Gene Delivery and Tissue Engineering, Jiangsu University, Zhenjiang, People's Republic of China.
The poor prognosis constitutes a significant difficulty for spinal cord injury (SCI) individuals. Although mesenchymal stem cells (MSCs) hold promises as advanced therapy medicinal products (ATMPs) for SCI patients, challenges such as Good Manufacturing Practice-compliant manufacturing, cellular senescence, and limited therapeutic efficacy continue to hinder their clinical translation. Recent advances have identified botanical nanovesicles (BNs) as potent bioactive mediators capable of "priming" MSCs to self-rejuvenate, augment paracrine effect, and establish inflammatory tolerance.
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