乙型流感病毒感染过程中干扰素介导的天然免疫应答

目的 探讨乙型流感病毒(influenza B virus,IBV)感染引起干扰素(interferon,IFN)介导的天然免疫应答。方法以IBV感染犬肾上皮细胞(MDCK)为模型，通过荧光定量PCR法检测IFN信号通路的激活以及IFN刺激基因的表达。收集IBV感染MDCK细胞36及48 h上清，与新鲜培养基混合培养IBV感染MDCK细胞，qPCR法检测内源性IFN的抗病毒作用。加入JAK-STAT通路抑制剂CP后，收集IBV感染MDCK细胞上清，培养IBV感染MDCK细胞，通过qPCR法检测JAK-STAT通路抑制后对内源性IFN抗病毒作用的影响。结果 IBV可有效激活IFN信号通路，并诱导产生Ⅰ型IFN(IFNα、IFNβ)以及Ⅲ型IFN(IFNλ1、IFNλ3)为主的细胞因子。同时，IBV感染MDCK细胞后可诱导产生一系列具有广谱抗病毒作用的IFN刺激基因(IFN-stimulated genes,ISGs)，如ISG15、CCL5、CXCL10、MX1、RIG-I。用JAKSTAT通路抑制剂CP抑制该信号通路后，IBV感染MDCK细胞所诱导生成的ISGs的能力及其相应的抗病毒作...     

奶牛microRNA-205靶基因及调控网络的精细预测分析

目的预测奶牛microRNA-205(bta-miR-205)候选靶基因,对其进行生物信息学精细分析,构建候选靶基因参与的调控网络。方法应用miRBASE、Targetscan和miRWalk软件预测其候选靶基因,经Gene Ontology、Panther、STRING和DAVID软件进行功能注释、分类统计、蛋白质互作及KEGG通路注释和富集分析,通过Cytoscape软件绘制靶基因可能重点参与的调控网络。结果 miR-205基因成熟区序列高度保守,共筛选出288个bta-miR-205候选靶基因,其参与的主要生物进程是细胞过程、代谢过程和生物调控,主要参与形成细胞器等细胞组分,主要分子功能是结合、催化作用。MAPK3等多个候选靶基因存在基因共表达和蛋白互作关系,参与免疫系统、适应性免疫系统、基因表达(转录)、抗原加工等反应途径显著富集在鞘脂、甲状腺激素、PI3K-Akt等信号通路。结论 bta-miR-205的候选靶基因MAPK3等可能通过参与免疫系统、基因表达(转录)、抗原加工等反应途径及鞘脂、甲状腺激素、PI3K-Akt等信号通路,在奶牛炎症疾病抗性、生殖及发育过程调控中发挥重要作用。     

Pten敲除对Rad51基因表达的影响及其机制

目的研究Pten敲除对Rad51基因表达的影响及其可能的机制。方法采用半定量RT-PCR法和克隆形成试验比较Pten+/+MEFs与Pten-/-MEFs两种细胞中同源重组修复相关基因Rad51mRNA转录水平的差异,并比较两种细胞对辐射敏感性的差异和辐射后Rad51基因mRNA转录水平的差异及其可能的机制。结果与Pten+/+MEFs细胞相比,Pten-/-MEFs细胞中Rad51基因mRNA的转录水平和对辐射的敏感性显著降低;辐射后以及PI3K/AKT信号通路抑制剂LY-294002作用后,Rad51基因mRNA的转录水平明显增高。结论Pten缺失后Rad51基因表达异常,Pten可能通过PI3K/AKT信号通路来调控Rad51基因的表达。     

基于高通量测序的冷应激大鼠肝脏mRNA差异表达分析

目的高通量测序技术分析冷应激大鼠肝脏基因mRNA差异表达。方法将SPF级大鼠随机分为冷刺激组[(4±0. 05)℃]及常温对照组[(24±0. 05)℃],刺激24 h。采集2组大鼠肝脏组织并提取总RNA,应用Ⅲumina HiSeg平台测序,对筛选的差异表达基因进行基因功能(Gene Ontology,GO)注释及信号通路数据库(Kyoto Encyclopedia of Genes and Genomes,KEGG)分析,采用qRT-PCR验证随机筛选的基因mRNA表达水平。结果经测序分析,冷刺激组发掘新基因293个,其中244个有功能注释,差异表达基因98个;经GO分析,差异表达基因显著富集细胞过程、生物调控、代谢过程、细胞组分、细胞器、蛋白质运输等过程;经KEGG分析,大多数差异表达基因注释在原发性免疫缺陷、癌症形成过程、用于IgA生成的肠道免疫网络、细胞因子与细胞因子受体相互作用等通路,在MAPK、PI3K-Akt信号通路和内质网蛋白加工通路中表达量极高,在乙型肝炎和病毒感染通路表达量较低。与常温对照组比较,冷刺激组大鼠肝脏的多配体聚糖4(syndecan 4,Sdc4)及白蛋白(albumin,Alb)基因表达水平上调,差异有统计学意义(P 0. 05)。结论成功筛选冷应激大鼠肝脏差异表达基因,该类基因很可能参与了机体代谢及损伤修复等过程,为深入研究大鼠冷应激机制积累了数据。     

Axin2基因对肝癌细胞中Wnt/β-catenin信号通路相关分子表达的调控及机制

目的探讨Axin2基因对肝癌细胞中Wnt/β-catenin信号通路相关分子表达的调控及其机制。方法通过TOPflash试验检测Axin2基因对Wnt/β-catenin信号通路的影响;荧光定量PCR(Quantitative Real-time PCR,QPCR)法检测Axin2基因在正常肝细胞LO2及3种肝癌细胞HepG2、HHCC、HB611中的表达水平;对肝癌细胞HepG2中Axin2的表达进行干扰,并检测Wnt/β-catenin信号通路相关基因(β-catenin、Cyclin A、CDK2、Wnt5a、STAT3、EGFR、APC)mRNA转录水平及相关蛋白(β-catenin、Cyclin A、CDK2、APC)的表达量。结果 Axin2对Wnt/β-catenin信号通路有显著抑制作用,且呈剂量依赖性(P 0. 05);3种肝癌细胞Axin2的表达水平显著低于正常肝细胞LO2(P 0. 05);干扰HepG2细胞中Axin2基因表达后,Axin2基因m RNA转录及蛋白表达水平降低,Wnt信号通路下游基因β-catenin、Cyclin A、CDK2、Wnt5a、STAT3和EGFR基因mRNA转录水平及β-catenin、Cyclin A、CDK2蛋白表达量均上升,而APC基因mRNA转录水平及蛋白表达量降低。结论 Axin2基因通过调控Wnt/β-catenin信号通路相关基因的表达抑制肝癌细胞的生成,本研究为寻找新的肝癌治疗靶点及防治药物提供了实验依据。     

驴油提升皮肤屏障功能及潜在作用机制研究

探讨驴油提升皮肤屏障功能的作用及其可能的作用机制。将十二烷基硫酸钠作用于体外重组三维表皮模型（EpiKutis）构建皮肤屏障损伤模型,采用四唑盐比色法（MTT）检测组织活力,利用酶联免疫吸附检测方法（ELISA）检测IL-1α的水平,考察驴油对人3D皮肤屏障损伤模型的屏障指数和IL-1α水平的影响。采用转录组高通量测序（RNA-seq）技术揭示驴油对皮肤生理的机制,并揭示驴油提升皮肤屏障功能的可能机制。结果表明,驴油可显著提升人3D皮肤屏障损伤模型的屏障指数和降低IL-1α水平,效果与地塞米松类似。驴油作用于人3D皮肤模型后,筛选出1 649个差异表达基因,其中619个基因上调,1 030个基因下调。基因本体论（Gene?Ontology,GO）功能富集分析表明差异表达基因与表皮发育、表皮细胞分化及皮肤发育有关;京都基因与基因组百科全书（kyoto?encyclopedia?of?genes?and?genomes,KEGG）通路富集分析结果表明差异基因参与TGF-β信号通路、IL-17信号通路、HIF-1信号通路、细胞因子-细胞因子受体相互作用、NF-κB信号通路等重要生物学通路,其...     

大肠杆菌表达的rhGM—CSF发酵纯化工艺研究

重组人粒细胞-巨噬细胞集落刺激因子（rhGM－CSF）基因表达产物在大肠杆菌的胞浆中以不溶性包涵体的形式存在、包涵体用超声破菌分离后，经变性、复性，用流水层析、离子交换层析、凝胶过滤层析等进行纯化。SDS—PAGE表明终产物纯度达97．8％。纯化蛋白的比活性根据MTT法在TF—1细胞测定的结果，可达3×107u／mg蛋白。     

苦参碱对人急性红白血病细胞株TF-1SALL4基因及Wnt/β-catenin信号通路下游靶基因表达的影响

目的探讨苦参碱对人急性红白血病细胞株TF-1 SALL4基因及Wnt/β-catenin信号通路下游靶基因表达的影响。方法用不同浓度的苦参碱(0.5、1.0、2.0 g/L)处理TF-1细胞,另设对照组(不加苦参碱)。苦参碱作用48 h后,采用实时荧光定量PCR法检测各组TF-1细胞中SALL4基因及Wnt/β-catenin信号通路下游靶基因β-catenin、C-myc、Cyclin DI的表达水平,并分析SALL4基因与β-catenin、C-myc及Cyclin DI表达的相关性;Western blot法检测各组TF-1细胞中SALL4蛋白的表达水平。结果经不同浓度苦参碱处理48 h后,TF-1细胞中SALL4、β-catenin、C-myc、Cyclin DI基因的表达水平及SALL4蛋白的表达水平与对照组相比,均明显下降,且呈浓度依赖性(P<0.05);SALL4基因与β-catenin、C-myc、Cyclin DI基因的表达明显相关(r s值分别为0.912、0.818和0.832,P均<0.01)。结论苦参碱对TF-1细胞中SALL4基因和蛋白表达及Wnt/β-catenin信号通路下游靶基因β-catenin、C-myc、Cyclin DI的抑制可能在抑制细胞增殖、诱导细胞凋亡过程中起重要作用。     

基于网络药理学及分子对接研究盐酸小檗碱治疗特异性皮炎的作用机制

目的：通过网络药理学和分子对接探索盐酸小檗碱活性化合物证明其对抗特异性皮炎的机制。方法：使用SwissTargetPrediction和GeneCards数据库检索对应目标的基因，由Cytoscape软件构建化合物-靶标网络，筛选出药物-疾病的共同基因靶点作为研究靶点，将共同基因靶点导入STRING网络平台，获得蛋白质-蛋白质相互作用关系。盐酸小檗碱的核心靶点通过Metascape基因功能分析网站进行基因本体（GO）和KEGG信号通路生物富集分析。最后，采用Autodock、Pymol软件对筛选出来起到关键作用的靶点与盐酸小檗碱成分进行分子对接。结果：化合物-靶点网络主要包含99个对应靶点。GO生物富集分析得到1512个生物学过程、138个细胞组成、174个分子功能，KEGG中有5个主要信号通路。分子对接结果表明，盐酸小檗碱与ICAM1抗体具有较高的亲和力。结论：盐酸小檗碱中的可能通过与ICAM1抗体等多种靶点调控多种信号通路，可能对特异性皮炎发挥治疗作用。     

慢性粒细胞白血病树突状细胞对T细胞增殖作用的研究

目的　体外诱导慢性粒细胞白血病 (CML)患者外周血单个核细胞 (PBMCs)为树突状细胞 (DCs) ,并对其形态、表型及对T细胞刺激增殖作用进行研究。方法　利用GM CSF、IL 4、TNF α体外定向诱导生成树突状细胞 ,对所诱生的细胞进行细胞表型及形态检测 ,用D FISH方法检测所诱生DCs的白血病源性 ,应用MTT法检测所诱生的DCs刺激T细胞增殖的能力。结果　CML患者PBMCs在体外可诱导生成bcr/abl融合基因阳性的DCs(CMLDCs)。CMLDCs对自体T细胞有明显刺激增殖作用 ,而CML细胞无此作用。CMLDCs刺激同一异体T细胞增殖能力弱于正常DCs,但当培养体系中加入 30 0U/ml干扰素 α(IFN α)时可使其刺激能力接近正常DCs。结论　CMLDCs具有刺激自体及异体T细胞增殖的能力 ,但对异体T细胞的刺激作用弱于正常DCs,IFN α可提高CMLDCs刺激T细胞增殖能力     

Rapid Internalization and Nuclear Translocation of CCL5 and CXCL4 in Endothelial Cells

The chemokines CCL5 and CXCL4 are deposited by platelets onto endothelial cells, inducing monocyte arrest. Here, the fate of CCL5 and CXCL4 after endothelial deposition was investigated. Human umbilical vein endothelial cells (HUVECs) and EA.hy926 cells were incubated with CCL5 or CXCL4 for up to 120 min, and chemokine uptake was analyzed by microscopy and by ELISA. Intracellular calcium signaling was visualized upon chemokine treatment, and monocyte arrest was evaluated under laminar flow. Whereas CXCL4 remained partly on the cell surface, all of the CCL5 was internalized into endothelial cells. Endocytosis of CCL5 and CXCL4 was shown as a rapid and active process that primarily depended on dynamin, clathrin, and G protein-coupled receptors (GPCRs), but not on surface proteoglycans. Intracellular calcium signals were increased after chemokine treatment. Confocal microscopy and ELISA measurements in cell organelle fractions indicated that both chemokines accumulated in the nucleus. Internalization did not affect leukocyte arrest, as pretreatment of chemokines and subsequent washing did not alter monocyte adhesion to endothelial cells. Endothelial cells rapidly and actively internalize CCL5 and CXCL4 by clathrin and dynamin-dependent endocytosis, where the chemokines appear to be directed to the nucleus. These findings expand our knowledge of how chemokines attract leukocytes to sites of inflammation.     

Peritoneal Fluid from Patients with Ovarian Endometriosis Displays Immunosuppressive Potential and Stimulates Th2 Response

Endometriosis is a common gynaecological disorder characterized by the ectopic growth of endometrial tissue outside the uterine cavity. It is associated with chronic pelvic inflammation and autoimmune reactivity manifesting by autoantibody production and abrogated cellular immune responses. Endometriotic peritoneal fluid contains various infiltrating leucocyte populations and a bulk of proinflammatory and immunoregulatory cytokines. However, the nature and significance of the peritoneal milieu in women with endometriosis still remains obscure. Therefore, the aim of the present study was to investigate the immunoregulatory activity of the peritoneal fluid (PF) from women with endometriosis. The peritoneal fluid samples were collected during laparoscopic surgery from 30 women with and without endometriosis. Immunoregulatory cytokines (IL-2, IL-4, IL-6, IL-10, IL-17A, IFN-γ and TNF) and chemokines (CCL2, CCL5, CXCL8 and CXCL9) were evaluated in PF and culture supernatants generated by unstimulated and CD3/CD28/IL-2-stimulated CD4⁺ T cells cultured in the presence of PF. The effect of PF on the generation of Treg and Th17 cells in CD4⁺ T cell cultures, as well as the natural cytotoxic activity of peripheral blood mononuclear cells, was also investigated. Concentrations of IL-6, IL-10, CCL2, CXCL8 and CXCL9 were significantly upregulated in the PF from women with endometriosis when compared to control women, whereas concentrations of other cytokines and chemokines were unaffected. The culturing of unstimulated and CD3/CD28/IL-2-stimulated CD4⁺ T cells in the presence of endometriotic PF resulted in the downregulation of their IL-2, IFN-γ, IL-17A and TNF production as compared to culture medium alone. On the other side, endometriotic PF significantly stimulated the production of IL-4 and IL-10. Endometriotic PF also stimulated the release of CCL2 and CXCL8, whereas the production of CCL5 and CXCL9 was downregulated. Endometriotic PF stimulated the generation of Treg cells and had an inhibitory effect on the generation of Th17 cells in cultures of CD4⁺ T cells. It also inhibited the NK cell cytotoxic activity of the peripheral blood lymphocytes. These results strongly imply that the PF from patients with endometriosis has immunoregulatory/immunosuppressive activity and shifts the Th1/Th2 cytokine balance toward the Th2 response, which may account for deviation of local and systemic immune responses. However, a similar trend, albeit not a statistically significant one, was also observed in case of PF from women without endometriosis, thus suggesting that peritoneal milieu may in general display some immunoregulatory/immunosuppressive properties. It should be stressed, however, that our present observations were made on a relatively small number of PF samples and further studies are needed to reveal possible mechanism(s) responsible for this phenomenon.     

Increased C-X-C Motif Chemokine Ligand 12 Levels in Cerebrospinal Fluid as a Candidate Biomarker in Sporadic Amyotrophic Lateral Sclerosis

Sporadic amyotrophic lateral sclerosis (sALS) is a fatal progressive neurodegenerative disease affecting upper and lower motor neurons. Biomarkers are useful to facilitate the diagnosis and/or prognosis of patients and to reveal possible mechanistic clues about the disease. This study aimed to identify and validate selected putative biomarkers in the cerebrospinal fluid (CSF) of sALS patients at early disease stages compared with age-matched controls and with other neurodegenerative diseases including Alzheimer disease (AD), spinal muscular atrophy type III (SMA), frontotemporal dementia behavioral variant (FTD), and multiple sclerosis (MS). SWATH acquisition on liquid chromatography-tandem mass spectrometry (LC–MS/MS) for protein quantitation, and ELISA for validation, were used in CSF samples of sALS cases at early stages of the disease. Analysis of mRNA and protein expression was carried out in the anterior horn of the lumbar spinal cord in post-mortem tissue of sALS cases (terminal stage) and controls using RTq-PCR, and Western blotting, and immunohistochemistry, respectively. SWATH acquisition on liquid chromatography-tandem mass spectrometry (LC–MS/MS) revealed 51 differentially expressed proteins in the CSF in sALS. Receiver operating characteristic (ROC) curves showed CXCL12 to be the most valuable candidate biomarker. We validated the values of CXCL12 in CSF with ELISA in two different cohorts. Besides sALS, increased CXCL12 levels were found in MS but were not altered in AD, SMA, and FTD. Therefore, increased CXCL12 levels in the CSF can be useful in the diagnoses of MS and sALS in the context of the clinical settings. CXCL12 immunoreactivity was localized in motor neurons in control and sALS, and in a few glial cells in sALS at the terminal stage; CXCR4 was in a subset of oligodendroglial-like cells and axonal ballooning of motor neurons in sALS; and CXCR7 in motor neurons in control and sALS, and reactive astrocytes in the pyramidal tracts in terminal sALS. CXCL12/CXCR4/CXCR7 axis in the spinal cord probably plays a complex role in inflammation, oligodendroglial and astrocyte signaling, and neuronal and axonal preservation in sALS.     

Families of microRNAs Expressed in Clusters Regulate Cell Signaling in Cervical Cancer

Tumor cells have developed advantages to acquire hallmarks of cancer like apoptosis resistance, increased proliferation, migration, and invasion through cell signaling pathway misregulation. The sequential activation of genes in a pathway is regulated by miRNAs. Loss or gain of miRNA expression could activate or repress a particular cell axis. It is well known that aberrant miRNA expression is well recognized as an important step in the development of cancer. Individual miRNA expression is reported without considering that miRNAs are grouped in clusters and may have similar functions, such as the case of clusters with anti-oncomiRs (23b~27b~24-1, miR-29a~29b-1, miR-29b-2~29c, miR-99a~125b-2, miR-99b~125a, miR-100~125b-1, miR-199a-2~214, and miR-302s) or oncomiRs activity (miR-1-1~133a-2, miR-1-2~133a-1, miR-133b~206, miR-17~92, miR-106a~363, miR183~96~182, miR-181a-1~181b-1, and miR-181a-2~181b-2), which regulated mitogen-activated protein kinases (MAPK), phosphatidylinositol-4,5-bisphosphate 3-kinase (PI3K), NOTCH, proteasome-culling rings, and apoptosis cell signaling. In this work we point out the pathways regulated by families of miRNAs grouped in 20 clusters involved in cervical cancer. Reviewing how miRNA families expressed in cluster-regulated cell path signaling will increase the knowledge of cervical cancer progression, providing important information for therapeutic, diagnostic, and prognostic methodology design.     

TNF Is Partially Required for Cell-Death-Triggered Skin Inflammation upon Acute Loss of cFLIP

cFLIP is required for epidermal integrity and skin inflammation silencing via protection from TNF-induced keratinocyte apoptosis. Here, we generated and analyzed cFLIP epidermal KO mice with additional TNF deficiency. Intriguingly, the ablation of TNF rescued the pathological phenotype of epidermal cFLIP KO from characteristic weight loss and increased mortality. Moreover, the lack of TNF in these animals strongly reduced and delayed the epidermal hyperkeratosis and the increased apoptosis in keratinocytes. Our data demonstrate that TNF signaling in cFLIP-deficient keratinocytes is the critical factor for the regulation of skin inflammation via modulated cytokine and chemokine expression and, thus, the attraction of immune cells. Our data suggest that autocrine TNF loop activation upon cFLIP deletion is dispensable for T cells, but is critical for neutrophil attraction. Our findings provide evidence for a negative regulatory role of cFLIP for TNF-dependent apoptosis and partially for epidermal inflammation. However, alternative signaling pathways may contribute to the development of the dramatic skin disease upon cFLIP deletion. Our data warrant future studies of the regulatory mechanism controlling the development of skin disease upon cFLIP deficiency and the role of cFLIP/TNF in a number of inflammatory skin diseases, including toxic epidermal necrolysis (TEN).     

Cytokine-Laden Extracellular Vesicles Predict Patient Prognosis after Cerebrovascular Accident

Background: A major contributor to disability after hemorrhagic stroke is secondary brain damage induced by the inflammatory response. Following stroke, global increases in numerous cytokines—many associated with worse outcomes—occur within the brain, cerebrospinal fluid, and peripheral blood. Extracellular vesicles (EVs) may traffic inflammatory cytokines from damaged tissue within the brain, as well as peripheral sources, across the blood–brain barrier, and they may be a critical component of post-stroke neuroinflammatory signaling. Methods: We performed a comprehensive analysis of cytokine concentrations bound to plasma EV surfaces and/or sequestered within the vesicles themselves. These concentrations were correlated to patient acute neurological condition by the Glasgow Coma Scale (GCS) and to chronic, long-term outcome via the Glasgow Outcome Scale-Extended (GOS-E). Results: Pro-inflammatory cytokines detected from plasma EVs were correlated to worse outcomes in hemorrhagic stroke patients. Anti-inflammatory cytokines detected within EVs were still correlated to poor outcomes despite their putative neuroprotective properties. Inflammatory cytokines macrophage-derived chemokine (MDC/CCL2), colony stimulating factor 1 (CSF1), interleukin 7 (IL7), and monokine induced by gamma interferon (MIG/CXCL9) were significantly correlated to both negative GCS and GOS-E when bound to plasma EV membranes. Conclusions: These findings correlate plasma-derived EV cytokine content with detrimental outcomes after stroke, highlighting the potential for EVs to provide cytokines with a means of long-range delivery of inflammatory signals that perpetuate neuroinflammation after stroke, thus hindering recovery.     

Derma-Hc,a New Developed Herbal Formula,Ameliorates Cutaneous Lichenification in Atopic Dermatitis

Atopic dermatitis (AD) is a chronic cutaneous disorder that is characterized by severe eczematous inflammation, swelling, and lichenification. Activation of T helper (Th)-22 cells by allergens leads to epidermal hyperplasia with hyperkeratosis at the chronic phase of AD. Derma-Hc is composed of five natural herbs with anti-AD effects, such as Astragalus membranaceus BUNGE, Schizonepeta tenuifolia Briq., Cryptotympana pustulata Fabr., Angelica sinensis Diels, Arctium lappa L. In this study, the ameliorative effect of Derma-Hc on cutaneous lichenification in 2,4-dinitrochlorobenzne (DNCB)-induced AD was investigated. The dorsal skin of mice was sensitized with DNCB to induce AD-like skin lesions. The dermatitis score and frequency of scratching were evaluated. Thickness of epidermis and dermis was measured by staining with H&E. In addition, infiltration of the mast cell was observed by staining with toluidine blue. Then, desmosomal cadherin, DSC1 was examined by immunofluorescence. Pathological mechanisms involved in lichenification were analyzed in AD-like skin lesions and TNF-α + IFN-γ-treated with human keratinocytes including keratinocyte differentiation genes and JAK1-STAT3 signaling pathway with IL-22 by RT-PCR and western blotting. Topical treatment of Derma-Hc improved AD-like symptoms such as dryness, edema and lichenefication and decreased the number of scratches. Histopathological analysis demonstrated that Derma-Hc significantly inhibited epidermal hyperplasia, hyperkeratosis, and mast cells infiltration. In addition, the level of DSC1 was highly expressed in the epidermis by Derma-Hc. Moreover, mRNA expression level of FLG, an epidermal differentiation complex gene, was recovered by Derma-Hc treatment. KLK5 and KLK7 were markedly reduced to normalize keratinocyte differentiation in dorsal skin tissues and human keratinocytes. On the other hand, Derma-Hc restored expression level of SPINK5. In addition, Derma-Hc inhibited IL-22 via the blockade of JAK1-STAT3 signal pathway. Taken together, Derma-Hc, a natural herbal formula, regulated keratinocyte differentiation and inhibited epidermal hyperplasia with hyperkeratosis. Therefore, Derma-Hc could be a promising candidate for treating chronic AD through modulating signaling of IL-22-associated skin lichenification.