Genetic Engineering in Tissue Regeneration

Transforming tissue regeneration using engineering ASCs with LNPs? A reality! A just published study has brought a new dimension to the field of tissue engineering and regeneration, focusing on the potential of adipose stem cells (ASCs). A team of researchers have developed a novel method to enhance the therapeutic efficacy of ASCs, addressing their traditionally limited tissue repair capabilities. 🔬 The Strategy: The team has ingeniously designed a series of sugar alcohol-derived LNPs to reprogram ASCs, enhancing their ability to continuously produce therapeutic proteins. This approach aims to boost the natural tissue regeneration potential of ASCs. 💡 Core Findings: 1) Efficient RNA delivery using isomannide-derived lipid nanoparticles (DIM1T LNP), which were shown to be highly effective in delivering RNAs to ASCs, with higher efficiency than electroporation, Lipofectamine 3000, and three FDA-approved LNP formulations. 2) Innovative co-delivery system of self-amplifying RNA (saRNA) and E3 mRNA (combined as SEC) using DIM1T LNP enhances immune responses against saRNAs, leading to sustained protein production in ASCs. 3) Superior wound healing, with ASCs engineered with DIM1T LNP-SEC (DS-ASCs) showing prolonged expression of hepatocyte growth factor (HGF) and C-X-C motif chemokine ligand 12 (CXCL12). This resulted in significantly improved wound healing, especially in a diabetic cutaneous wound model, outperforming wild-type and DIM1T LNP-mRNA counterparts. The paper showed how the LNP-RNA-mediated engineering strategy only takes hours to induce effective protein secretion by ASCs and the secreted protein level can persist 9 days post-treatment. Optimization of the current strategy for wound healing promotion may include combinatorial secretion of antibiotic peptides to eliminate bacterial infections at wound sites. Given the simplicity, safety, and feasibility of the LNP-RNA system, the showcased DIM1T LNP-RNA system can be a promising platform to broadly facilitate the generation of various proteins in ASCs based on the therapeutic needs of diverse diseases. Learn more here: https://lnkd.in/eXqAvk_C #RegenerativeMedicine #TissueEngineering #StemCellResearch #BiomedicalInnovation #lnps #nanotechnology #nanomaterials #nanoparticles #nanomedicine

🟥 In Vivo CRISPR Delivery Using Engineered Nanoparticles for Tissue-Specific Gene Correction CRISPR-based gene editing technology has revolutionized genome engineering, but one of its biggest challenges remains efficient and safe in vivo delivery. Traditional approaches, such as viral vectors, present risks of immune response, genomic integration, and limited payload capacity. To overcome these limitations, researchers are developing engineered nanoparticles for tissue-specific, non-viral CRISPR delivery, providing a safer and more precise approach to in vivo gene correction. Nanoparticle-based CRISPR delivery systems are designed to encapsulate CRISPR-Cas components (mRNA, RNPs, or plasmids) and efficiently deliver them to target cells. Lipid nanoparticles (LNPs) have shown promising results in delivering CRISPR therapeutics for liver diseases such as transthyretin amyloidosis (ATTR), where targeted gene correction has been achieved with high efficiency. In addition, polymer- and peptide-based nanoparticles are being optimized to enhance stability, minimize degradation, and improve tissue targeting. A major advantage of engineered nanoparticles is their ability to be functionalized for tissue-specific targeting. By modifying the surface of nanoparticles with ligands, peptides, or antibodies, researchers can direct CRISPR delivery to specific organs, such as the brain, lungs, or muscles. This approach improves editing precision while minimizing off-target effects, making it particularly valuable for treating genetic diseases that affect multiple tissues. In addition to specificity, nanoparticles enhance the safety of CRISPR delivery by avoiding permanent genomic integration and reducing the risk of immune activation. Unlike viral vectors, nanoparticles allow transient expression of CRISPR components, reduce unwanted mutations, and make gene editing reversible when necessary. This makes them an attractive option for clinical applications in regenerative medicine and gene therapy. With advances in AI-driven nanoparticle design, improved stability, and real-time delivery tracking, in vivo CRISPR therapies will become more efficient and widely applicable. Engineered nanoparticles have great potential for safe, precise, and effective gene correction, paving the way for the next generation of personalized medicine.   References [1] San Hae Im et al., Journal of Nanobiotechnology 2024 (https://lnkd.in/eZibegXe) [2] Tuo Wei et al., Nature Communications 2020 (https://lnkd.in/e2M7pq5C) #CRISPR #GeneTherapy #Nanomedicine #PrecisionMedicine #GenomeEngineering #BiotechInnovation #Nanoparticles #GeneticTherapy #BiomedicalBreakthroughs #SyntheticBiology #CSTEAMBiotech

Scientists are using axolotl's to unlock dormant healing powers within the human genome. For decades, the axolotl has fascinated researchers with its ability to perfectly regrow limbs, hearts, and even spinal cords. Recent genetic mapping reveals a surprising truth: humans and axolotls share much of the same biological architecture. Key components like the Shox gene, which directs limb growth, and signaling pathways involving retinoic acid are present in both species. This suggests that the basic machinery for complex regeneration is not unique to salamanders; it is a conserved trait that humans possess but simply do not activate after embryonic development. The primary obstacle standing between humans and regenerative healing is our biological tendency to form scar tissue. While axolotls can reprogram their cells to trigger perfect regrowth at an injury site, human bodies prioritize rapid sealing via scarring, which effectively silences the regenerative program. Scientists are now investigating how to bypass this "scar barrier" and reactivate dormant pathways involving genes like Catalase and FETUB. By learning how to flip these genetic switches, medical science aims to revolutionize treatment for spinal cord injuries and organ repair, potentially unlocking a level of healing once thought to be science fiction. source: Nowoshilow, S., Schloissnig, S., Fei, J. F., Dahl, A., Pang, A. W., Pippel, M., & Tanaka, E. M. (2018). The axolotl genome and the evolution of key tissue formation regulators. Nature. Courtesy: Hashem al Ghaili

An axolotl lost its leg. Four weeks later, it had a new one—bones, nerves, muscles, skin. Perfect. Think about that. For decades, scientists assumed this kind of regeneration was unique to salamanders. A biological trick humans could never access. Then researchers cracked the axolotl genome. What they found rewrote the story. What we assumed about human healing: ↳ Once tissue is damaged, it scars over permanently ↳ Regenerative capacity disappears after embryonic development ↳ Complex regrowth requires biological machinery humans don't have ↳ Limbs, hearts, spinal cords—once lost, gone forever What the research shows instead: ↳ Humans share the same Shox gene that directs limb growth in axolotls ↳ Retinoic acid signaling pathways—key to regeneration—exist in both species ↳ The basic architecture for complex regrowth is conserved across vertebrates ↳ The code is there. It's just not activated. Here's the part that stopped me: The primary barrier isn't missing genes. It's scar tissue. When humans are injured, our bodies prioritise rapid sealing over regrowth. Scarring effectively silences the regenerative program that axolotls keep running. Scientists are now investigating how to bypass this "scar barrier"—reactivating dormant pathways involving genes like Catalase and FETUB that could reprogram wound sites toward regeneration instead of scarring. The ripple effect: A decoded genome proves the machinery exists 10 pathways identified = targets for intervention 100 patients in trials = we learn if humans can regenerate At scale = spinal cord injuries, organ damage, and joint destruction become treatable—not terminal Picture someone with a severed spinal cord. Today: permanent paralysis. Tomorrow: cells that remember how to rebuild. We spent decades accepting that human bodies only scar. A better question: what if our cells were waiting for permission to regenerate? Follow me, Dr. Martha Boeckenfeld, for stories where science rewrites what we thought was permanent. ♻️ Share if you believe the future of medicine is already written in our genome—we just need to learn how to read it. Resource: Nowoshilow, S., Schloissnig, S., Fei, J. F., Dahl, A., Pang, A. W., Pippel, M., & Tanaka, E. M. (2018). The axolotl genome and the evolution of key tissue formation regulators. Nature.

Scientists in California have achieved a breakthrough by growing human skin that includes fully functioning sweat glands something medical researchers have attempted for decades. Traditional artificial skin can protect wounds, but it lacks crucial biological features such as sweating, sensation, and elasticity. This new bioengineered skin behaves much more like real human tissue, capable of regulating temperature and adapting to the body as it heals. What makes this development remarkable is the level of complexity achieved in the lab. The engineered skin can integrate with nerves and blood vessels, allowing it to connect naturally with the patient’s body. Functioning sweat glands not only help with cooling but also support healthy tissue maintenance and prevent overheating — an essential part of normal skin physiology that burn victims often lose. This advancement offers life-changing potential for millions of people who suffer from severe burns or require reconstructive surgery. Instead of grafts that merely cover wounds, future patients could receive skin that restores real biological function. Researchers believe this milestone is one step on the path toward creating fully regenerative organs, bringing science closer to rebuilding complex human tissues from scratch. Dr. Mridul Tiwari BAMS | Root-Cause Healer Integrating Ayurveda with Modern Clinical Science Lucknow, India #RegenerativeMedicine #Bioengineering #MedicalBreakthrough #BurnTreatment #FutureOfHealth #doctormridultiwari

Humans have the ability to heal wounds, mend bones, and even regenerate certain organs like the liver, but when it comes to regrowing complex tissues like the retina, we’ve long been left behind compared to some animals. Certain species, such as fish, amphibians, and reptiles, can regenerate lost limbs, organs, and even retinal cells, which are crucial for vision. Now, scientists at The Korea Advanced Institute of Science and Technology (KAIST) have made a groundbreaking discovery that could bring us closer to regenerating retinal cells in humans, offering hope to the millions affected by retinal degeneration and blindness. The breakthrough centers on a protein called PROX1, which inhibits the regeneration of retinal cells in mammals. In zebrafish, however, this protein doesn’t interfere, allowing them to reprogram certain retinal support cells into new neurons that can replace damaged ones. Inspired by this ability, the KAIST team found that by suppressing PROX1 in mice, they could stimulate the regeneration of retinal cells in animals suffering from retinitis pigmentosa, a degenerative disease that destroys photoreceptor cells in the retina. Their method led to sustained regeneration for six months, marking the first successful long-term neural regeneration in mammalian retinas. This exciting development builds on years of research into how animals like amphibians and fish regenerate retinal tissue. As scientists continue to explore genetic and molecular pathways, including the Hippo pathway and new techniques involving gold nanoparticles, this discovery could pave the way for new treatments for blindness-related conditions like macular degeneration and retinitis pigmentosa. Research Paper 📄 https://lnkd.in/eumskWZt

For centuries, limb regeneration seemed like pure science fiction. But now, science is closer than ever. Researchers have identified a gene called CYP26B1, found in axolotls—the salamanders famous for regenerating legs, hearts, and even parts of their brains. This gene acts like a cellular mapmaker, guiding stem cells to rebuild muscle, bone, and skin in perfect order. In lab experiments, when scientists manipulated this gene in human stem cells, they saw regeneration-like behavior: instead of random growth, the cells organized into specific tissues. It’s still early days, but the discovery suggests a future where humans may one day regrow amputated limbs—not through miracle, but through biology. Do you think regeneration should become a standard part of medicine? #regenerativemedicine #genediscovery #axolotl #sciencefacts

The gene exists. It’s just asleep. Harvard researchers studying axolotls the salamanders that can regrow entire limbs,have discovered that humans carry closely related regeneration genes. The difference is not absence, but activation. In axolotls, these genes switch on after injury, guiding the repair of nerves, muscle, and tissue. In humans, the same pathways remain largely dormant. Scientists are now focused on understanding what flips this biological switch and whether it could one day be safely activated in people. If that becomes possible, the implications are enormous: • Tissue repair instead of permanent damage • New approaches to spinal cord injury recovery • Organ healing driven from within the body This is not a treatment. It is a blueprint. The human body may already contain the instructions for regeneration. Modern science is learning how to read them. Shared for informational and educational purposes only. Source: Harvard regenerative biology research #TheSciencePulse #RegenerativeMedicine #HumanBiology #FutureOfHealing #Neuroscience #MedicalResearch #ScienceBacked #PreventiveHealth