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Engineered Sweat Gland Organoids In article number 2103079, Tao Yue, Lei Dong, Xiaobing Fu, and co‐workers have converted human epidermal keratinocytes into cells with typical properties of sweat gland cells and obtained sweat gland organoids from these cells. Transplanting the organoids into mice successfully restored the vital sweat gland functions during skin wound healing, demonstrating a fast and robust way of personalized sweat gland regeneration in patients with large skin defects. [Image: see text]

Allogeneic anti-CD19 chimeric antigen receptor (CAR) T-cell therapy has the potential for extensive clinical applications. This study aimed to evaluate its efficacy and safety in treating relapsed or refractory (R/R) acute lymphoblastic leukemia (ALL) and non-Hodgkin lymphoma (NHL). Four databases were searched for relevant studies. Among patients treated with donor-derived CAR T-cell therapy, ALL patients had a complete remission (CR) rate of 80 % and a 1-year overall survival rate of 51 %. The graft-versus-host disease (GvHD) rate was 4 %, cytokine release syndrome was 69 %, and immune effector cell-associated neurotoxicity syndrome was 8 %. For off-the-shelf CAR T-cell therapy, the CR rate for ALL was 70 %, and for NHL, it was 52 %. The objective response rate for NHL was 72 %. The pooled GvHD of off-the-shelf CAR T-cell therapy for ALL and NHL combined was 0 %. Allogeneic anti-CD19 CAR T-cell therapy are effective and safe for treating R/R ALL and NHL. AVAILABILITY OF DATA AND MATERIALS: All datasets generated in this study are included in the article/Supplementary Material.

Background This study aimed to classify relapsed retroperitoneal liposarcoma (RLS) as new primary (NP) or true recurrence (TR) and to assess the implications for therapeutic management of these classifications. Methods Patients with recurrent RLS were classified as NP if the relapse was different from the former tumor’s pathology subtype and anatomical location. Kaplan-Meier curves were adapted to estimate relapse-free survival (RFS), and logistic regression analysis was used to explore the factors related to NP.Results Total 177 patients with relapsed RLS were included in this study. The median tumor sizes were 16 cm (IQR, 13-22 cm, NP) and 18 cm (IQR, 12-25 cm, TR) (P=0.003). Multifocal tumors (89.2% vs 73.8%, P=0.011) and multiple pathology subtypes (52.7% vs 31.1%, P=0.004) were more common in the NP group and tended to invade wider anatomical areas (85.1% vs 71.8%, P=0.037). The median RFS was 17 months (IQR, 7-35 months) in the NP group and 12 months (IQR, 5-23 months) in the TR group, and NP patients showed a longer RFS than TR patients (P=0.004). When the log-rank test was conducted, low-grade pathology, tumor growth rate ≤ 1.25 cm/month and tumor size ≤ 16.5 cm had a significant influence on the NP phenomenon (P=0.015, 0.019, and 0.028, respectively). Logistic regression analysis illustrated that current surgeries, pathology subtype varieties and pathology grade were independent risk factors for NP (P=0.017, 0.019, and 0.025, respectively).Conclusion NP patients have longer RFS than TR patients, and their tumors tend to have multiple pathology subtypes and tumors and are more likely to invade wider anatomical areas. This classification contributes to a better understanding of RLS and provides new evidence for different therapeutic management of relapsed tumors.

We theoretically propose a high-efficiency tunable metalens based on an ellipse-shaped perforated graphene metasurface. By optimizing the axial length ratio of the elliptical aperture, we find the elliptical aperture with high reflectivity over a broad band by means of observing the reflectivity at different frequencies. Then, varying the orientation of the elliptical aperture from 0° to 180°, the reflected wave can generate a continuous 2 π range phase shift while keeping its amplitude high, which is necessary to achieve focusing. The metalens exhibits extraordinary tunability of focal length via uniformly changing the Fermi energy of graphene. The focus can be shifted above 72 µm with focusing efficiency reaching over 70%. In addition, the tunable metalens is also capable of broadband focusing modulation and plane focusing. The presented metalens exhibits outstanding focusing efficiency in dynamic focusing, thereby manifesting great practicability in dynamic imaging and robust stable imaging.

For patients with extensive skin defects, loss of sweat glands (SwGs) greatly decreases their quality of life. Indeed, difficulties in thermoregulation, ion reabsorption, and maintaining fluid balance might render them susceptible to hyperthermia, heatstroke, or even death. Despite extensive studies on the stem cell biology of the skin in recent years, in-situ regeneration of SwGs with both structural and functional fidelity is still challenging because of the limited regenerative capacity and cell fate control of resident progenitors. To overcome these challenges, one must consider both the intrinsic factors relevant to genetic and epigenetic regulation and cues from the cellular microenvironment. Here, we describe recent progress in molecular biology, developmental pathways, and cellular evolution associated with SwGdevelopment and maturation. This is followed by a summary of the current strategies used for cell-fate modulation, transmembrane drug delivery, and scaffold design associated with SwGregeneration. Finally, we offer perspectives for creating more sophisticated systems to accelerate patients' innate healing capacity and developing engineered skin constructs to treat or replace damaged tissues structurally and functionally.

Mesenchymal stem cells (MSCs) play an important role in cutaneous wound healing; however, the functional mechanisms involved in the healing process are poorly understood. A series of studies indicate that keratinocytes that migrate into the wound bed rely on an epithelial-mesenchymal transition (EMT)-like process to initiate re-epithelialization. We therefore examined whether bone marrow-derived MSCs (BMSCs) could affect biological behavior and induce EMT-like characteristics in the human epidermal keratinocytes (HEKs) and in the immortalized human keratinocyte cell line HaCaT cells, and we investigated the signaling pathways of BMSC-mediated phenotypic changes. By assessing the expression of EMT-related markers including E-cadherin, α-SMA, and Snail family transcription factors by β2-adrenergic receptor (β2-AR) blockage using ICI-118,551, a β2-AR selective antagonist, or β2-AR small interfering RNA (siRNA), we showed an involvement of β2-AR signaling in the induction of EMT-like alterations in human keratinocytes in vitro. β2-AR signaling also affected collective and individual cell migration in human keratinocyte cell lines, which was attenuated by administration of ICI-118,551. Treating the cells with BMSC-conditioned media (BMSC-CM) not only recapitulated the effect of isoproterenol (ISO) on cell migration but also induced the expression of β2-AR and a panel of proteins associated with mesenchymal phenotype in HEKs and HaCaT cells. Similarly, a blockade of the β2-AR by either ICI-118,551 or β2-AR siRNAs reversed both responses of the epidermal keratinocyte cell lines relative to BMSC-CM exposure. These results were further verified in our vivo findings and indicated that the exogenous application of MSCs promoted cutaneous wound healing and endowed the keratinocytes surrounding the wound area with an increased migratory phenotype through activation of β2-AR signaling. Our findings suggest a biochemical mechanism underlying the function of MSCs in wound re-epithelization, which provides a reliable theoretical basis for the wide application of MSCs in the treatment of chronic wounds.

Agelasta perplexa Pascoe is a mulberry borer that threatens the health of the plant. This study revealed the length of the complete mitochondrial genome of A. perplexa which consists of 15,552 bp length with 39.8% A, 12.8% C, 8.4% G, and 39.1% T, respectively. The GC content of whole mitochondrial genome is 21.1%. The complete mitochondrial genome encodes 12 protein-coding genes (PCGs), 22 tRNAs, two rRNAs, and one AT-rich region. This study can facilitate further research about genetic evolution as well as prevention and control strategy of A. perplexa.

In this paper, a method based on a backpropagation neural network (BPNN) is proposed to calculate the exposure buildup factor ( B D ) of a point isotropic source in an infinite homogeneous medium under arbitrary energy and mean free path (mfp). The results obtained for aluminum, iron, lead, and concrete based on BPNN are compared to ANSI/ANS-6.4.3 standard data, the results calculated by MCNP 5 Monte Carlo code, and a geometric progression (G-P) fitting formula, and show that the B D calculated by the BPNN model is more consistent with the ANS standard data. This method improves the calculation and fitting effect of B D compared to other methods. This paper proposes a systematic process combining a Monte Carlo method and BPNN to calculate and predict the B D of new materials under different energy and mfp, thus replacing the G-P fitting formula and improving calculation accuracy.

Mesenchymal stem cells (MSCs) play an important role in cutaneous wound healing; however, the functional mechanisms involved in the healing process are poorly understood. A series of studies indicate that keratinocytes that migrate into the wound bed rely on an epithelial-mesenchymal transition (EMT)-like process to initiate re-epithelialization. We therefore examined whether bone marrow-derived MSCs (BMSCs) could affect biological behavior and induce EMT-like characteristics in the human epidermal keratinocytes (HEKs) and in the immortalized human keratinocyte cell line HaCaT cells, and we investigated the signaling pathways of BMSC-mediated phenotypic changes. By assessing the expression of EMT-related markers including E-cadherin, α-SMA, and Snail family transcription factors by β